commit 07d046c1e8109770b3d7eb6cc5e3468ae1fa61e4 Author: Sexy Dev Date: Wed Mar 4 22:48:41 2026 -0600 Initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..a3c3dd9 --- /dev/null +++ b/.gitignore @@ -0,0 +1,19 @@ +# Zig build artifacts +zig-out/ +.zig-cache/ + +# OS files +.DS_Store +Thumbs.db +Desktop.ini + +# Editor / IDE +.vscode/ +.idea/ +*.swp +*.swo +*~ + +# Temporary files +/tmp/ +*.tmp diff --git a/README.md b/README.md new file mode 100644 index 0000000..cdc15ac --- /dev/null +++ b/README.md @@ -0,0 +1,20 @@ +# Flint + +A "cross-platform" desktop launcher for Minecraft Legacy Console Edition. + +## Quickstart + +To build and run the launcher, simply use: + +```sh +zig build run +``` + +## Planned Features + +- Windows runtime +- Full cross-platform support (Windows, macOS (Maybe)) +- Robust self-update +- Modding support when available +- Save data handling (GameHDD is backed up but other client settings are not) +- Directory junction support on Windows diff --git a/build.zig b/build.zig new file mode 100644 index 0000000..4edf970 --- /dev/null +++ b/build.zig @@ -0,0 +1,73 @@ +const std = @import("std"); + +pub fn build(b: *std.Build) void { + const target = b.standardTargetOptions(.{}); + const optimize = b.standardOptimizeOption(.{}); + + // --- Write commit.txt from git rev-parse HEAD (fallback to "dev") --- + const git_commit_step = b.addSystemCommand(&.{ "sh", "-c", "git rev-parse HEAD 2>/dev/null || echo dev" }); + const git_output = git_commit_step.captureStdOut(); + const write_commit = b.addUpdateSourceFiles(); + write_commit.addCopyFileToSource(git_output, "src/commit.txt"); + write_commit.step.dependOn(&git_commit_step.step); + + // --- SDL3 dependency --- + const sdl3_dep = b.dependency("SDL", .{ + .target = target, + .optimize = optimize, + }); + + // --- SDL3_ttf dependency --- + const sdl3_ttf_dep = b.dependency("SDL_ttf", .{ + .target = target, + .optimize = optimize, + }); + + // --- Main executable --- + const mod = b.createModule(.{ + .root_source_file = b.path("src/main.zig"), + .target = target, + .optimize = optimize, + .link_libc = true, + }); + + // Add C include paths to the module + mod.addIncludePath(b.path("vendor/clay")); + mod.addIncludePath(b.path("vendor/stb")); + + // Clay: compile as C source + mod.addCSourceFile(.{ + .file = b.path("vendor/clay/clay_impl.c"), + .flags = &.{"-std=c99"}, + }); + + // stb_image: compile as C source + mod.addCSourceFile(.{ + .file = b.path("vendor/stb/stb_image_impl.c"), + .flags = &.{"-std=c99"}, + }); + + // Link SDL3 and SDL3_ttf + mod.linkLibrary(sdl3_dep.artifact("SDL3")); + mod.linkLibrary(sdl3_ttf_dep.artifact("SDL3_ttf")); + + const exe = b.addExecutable(.{ + .name = "flint", + .root_module = mod, + }); + + // Make sure commit.txt is written before compilation + exe.step.dependOn(&write_commit.step); + + b.installArtifact(exe); + + // --- Run step --- + const run_cmd = b.addRunArtifact(exe); + run_cmd.step.dependOn(b.getInstallStep()); + if (b.args) |args| { + run_cmd.addArgs(args); + } + + const run_step = b.step("run", "Run the launcher"); + run_step.dependOn(&run_cmd.step); +} diff --git a/build.zig.zon b/build.zig.zon new file mode 100644 index 0000000..505a023 --- /dev/null +++ b/build.zig.zon @@ -0,0 +1,22 @@ +.{ + .name = .Flint, + .version = "1.0.0", + .fingerprint = 0x8b7111ec7a270fae, + .minimum_zig_version = "0.15.2", + .dependencies = .{ + .SDL = .{ + .url = "git+https://github.com/castholm/SDL?ref=v0.3.3+3.2.28#2cde21ea89c7b67d6e16f7f1e2faaa6f44618ecb", + .hash = "sdl-0.3.3+3.2.28-7uIn9MiRfwFhqxnwBi_vCQlKr82YpwkQBVwdz2uy46S1", + }, + .SDL_ttf = .{ + .url = "git+https://github.com/allyourcodebase/SDL_ttf#main", + .hash = "SDL_ttf-3.2.2-PNW5xNIRAADcUkA75pWizqojQE4hM75QjOequyw4aET6", + }, + }, + .paths = .{ + "build.zig", + "build.zig.zon", + "src", + "vendor", + }, +} diff --git a/src/assets/MinecraftStandard.otf b/src/assets/MinecraftStandard.otf new file mode 100644 index 0000000..8fa0b3e Binary files /dev/null and b/src/assets/MinecraftStandard.otf differ diff --git a/src/assets/background.jpg b/src/assets/background.jpg new file mode 100644 index 0000000..aed4404 Binary files /dev/null and b/src/assets/background.jpg differ diff --git a/src/c_imports.zig b/src/c_imports.zig new file mode 100644 index 0000000..7935843 --- /dev/null +++ b/src/c_imports.zig @@ -0,0 +1,8 @@ +// Shared C imports — all modules must use this single @cImport +// to avoid duplicate opaque type errors across compilation units. +pub const c = @cImport({ + @cInclude("SDL3/SDL.h"); + @cInclude("SDL3_ttf/SDL_ttf.h"); + @cInclude("clay.h"); + @cInclude("stb_image.h"); +}); diff --git a/src/commit.txt b/src/commit.txt new file mode 100644 index 0000000..4a7efa5 --- /dev/null +++ b/src/commit.txt @@ -0,0 +1,2 @@ +HEAD +dev diff --git a/src/config.zig b/src/config.zig new file mode 100644 index 0000000..3c5252a --- /dev/null +++ b/src/config.zig @@ -0,0 +1,138 @@ +const std = @import("std"); + +/// Launcher configuration loaded from and saved to config.json +pub const Preset = struct { + name: []const u8 = "", + username: []const u8 = "", + ip: []const u8 = "", + port: []const u8 = "25565", +}; + +pub const Config = struct { + saves_path: []const u8 = "", + active_preset: u32 = 0, + presets: [4]Preset = .{ + .{ .name = "Default", .port = "25565" }, + .{ .name = "Preset 2", .port = "25565" }, + .{ .name = "Preset 3", .port = "25565" }, + .{ .name = "Preset 4", .port = "25565" }, + }, +}; + +const safe_fs = @import("safe_fs.zig"); + +/// Load config from ~/.lcelauncher/config.json, returns defaults if missing +pub fn loadConfig(allocator: std.mem.Allocator) !Config { + const base = try safe_fs.getBaseDir(allocator); + var path_buf: [std.fs.max_path_bytes]u8 = undefined; + const config_path = try std.fmt.bufPrint(&path_buf, "{s}config.json", .{base}); + + const file = std.fs.openFileAbsolute(config_path, .{}) catch |err| switch (err) { + error.FileNotFound => { + // Return defaults with saves path set + var cfg = Config{}; + const saves = try safe_fs.getSavesDir(allocator); + cfg.saves_path = saves; + return cfg; + }, + else => return err, + }; + defer file.close(); + + const content = try file.readToEndAlloc(allocator, 1024 * 1024); + defer allocator.free(content); + + var config = Config{}; + + const parsed = std.json.parseFromSlice(std.json.Value, allocator, content, .{}) catch { + // If JSON is invalid, return defaults + const saves = try safe_fs.getSavesDir(allocator); + config.saves_path = saves; + return config; + }; + defer parsed.deinit(); + + const root = parsed.value; + if (root == .object) { + if (root.object.get("saves_path")) |sp| { + if (sp == .string) { + config.saves_path = try allocator.dupe(u8, sp.string); + } + } + if (root.object.get("active_preset")) |ap| { + if (ap == .integer) { + const val = ap.integer; + if (val >= 0 and val < 4) { + config.active_preset = @intCast(@as(u32, @truncate(@as(u64, @bitCast(val))))); + } + } + } + if (root.object.get("presets")) |presets_val| { + if (presets_val == .array) { + for (presets_val.array.items, 0..) |item, i| { + if (i >= 4) break; + if (item == .object) { + if (item.object.get("name")) |n| { + if (n == .string) config.presets[i].name = try allocator.dupe(u8, n.string); + } + if (item.object.get("username")) |u| { + if (u == .string) config.presets[i].username = try allocator.dupe(u8, u.string); + } + if (item.object.get("ip")) |ip| { + if (ip == .string) config.presets[i].ip = try allocator.dupe(u8, ip.string); + } + if (item.object.get("port")) |p| { + if (p == .string) config.presets[i].port = try allocator.dupe(u8, p.string); + } + } + } + } + } + } + + // Default saves_path if not set + if (config.saves_path.len == 0) { + config.saves_path = try safe_fs.getSavesDir(allocator); + } + + return config; +} + +/// Atomic save: write to config.json.tmp then rename to config.json +pub fn saveConfig(allocator: std.mem.Allocator, config: *const Config) !void { + const base = try safe_fs.getBaseDir(allocator); + var path_buf: [std.fs.max_path_bytes]u8 = undefined; + const tmp_path = try std.fmt.bufPrint(&path_buf, "{s}config.json.tmp", .{base}); + var final_buf: [std.fs.max_path_bytes]u8 = undefined; + const final_path = try std.fmt.bufPrint(&final_buf, "{s}config.json", .{base}); + + // Build JSON string manually for control over format + var json_buf = std.ArrayList(u8).empty; + defer json_buf.deinit(allocator); + const writer = json_buf.writer(allocator); + + try writer.writeAll("{\n"); + try writer.print(" \"saves_path\": \"{s}\",\n", .{config.saves_path}); + try writer.print(" \"active_preset\": {d},\n", .{config.active_preset}); + try writer.writeAll(" \"presets\": [\n"); + for (config.presets, 0..) |preset, i| { + try writer.writeAll(" { "); + try writer.print("\"name\": \"{s}\", ", .{preset.name}); + try writer.print("\"username\": \"{s}\", ", .{preset.username}); + try writer.print("\"ip\": \"{s}\", ", .{preset.ip}); + try writer.print("\"port\": \"{s}\"", .{preset.port}); + try writer.writeAll(" }"); + if (i < 3) try writer.writeAll(","); + try writer.writeAll("\n"); + } + try writer.writeAll(" ]\n"); + try writer.writeAll("}\n"); + + // Write to tmp file + const tmp_file = try std.fs.createFileAbsolute(tmp_path, .{}); + defer tmp_file.close(); + try tmp_file.writeAll(json_buf.items); + + // Atomic rename + try std.fs.renameAbsolute(tmp_path, final_path); +} diff --git a/src/game_updater.zig b/src/game_updater.zig new file mode 100644 index 0000000..d76c435 --- /dev/null +++ b/src/game_updater.zig @@ -0,0 +1,516 @@ +const std = @import("std"); +const safe_fs = @import("safe_fs.zig"); + +/// Decompress gzip body if detected, otherwise return original. +/// Caller must free the returned slice if it differs from the input. +fn decompressBody(allocator: std.mem.Allocator, body: []const u8) ![]const u8 { + if (body.len >= 2 and body[0] == 0x1f and body[1] == 0x8b) { + var input_reader = std.Io.Reader.fixed(body); + var window_buf: [std.compress.flate.max_window_len]u8 = undefined; + var decomp = std.compress.flate.Decompress.init(&input_reader, .gzip, &window_buf); + return decomp.reader.allocRemaining(allocator, .unlimited) catch return error.OutOfMemory; + } + return body; +} + +/// Download progress info for UI +pub const DownloadProgress = struct { + bytes_received: u64 = 0, + total_bytes: u64 = 0, + is_downloading: bool = false, + is_extracting: bool = false, + asset_name: []const u8 = "", + done: bool = false, + err: ?[]const u8 = null, +}; + +/// Update status for UI +pub const UpdateStatus = enum { + not_checked, + checking, + up_to_date, + update_available, + downloading, + err, +}; + +pub var game_update_status: UpdateStatus = .not_checked; +pub var game_download_progress: DownloadProgress = .{}; +pub var available_game_sha: ?[]const u8 = null; + +// Cached installed version names for UI display +const MAX_VERSIONS: usize = 16; +var installed_version_bufs: [MAX_VERSIONS][64]u8 = undefined; +var installed_version_lens: [MAX_VERSIONS]usize = [_]usize{0} ** MAX_VERSIONS; +pub var installed_version_count: usize = 0; + +pub fn getInstalledVersionName(index: usize) []const u8 { + return installed_version_bufs[index][0..installed_version_lens[index]]; +} + +/// Scan the versions directory and cache installed version names +pub fn refreshInstalledVersions(allocator: std.mem.Allocator) void { + installed_version_count = 0; + const versions_dir = safe_fs.getVersionsDir(allocator) catch return; + defer allocator.free(versions_dir); + + var dir = std.fs.openDirAbsolute(versions_dir, .{ .iterate = true }) catch return; + defer dir.close(); + + var it = dir.iterate(); + while (it.next() catch null) |entry| { + if (entry.kind == .directory and installed_version_count < MAX_VERSIONS) { + const name = entry.name; + if (name.len <= 64) { + @memcpy(installed_version_bufs[installed_version_count][0..name.len], name); + installed_version_lens[installed_version_count] = name.len; + installed_version_count += 1; + } + } + } +} + +const GAME_API_URL = "https://api.github.com/repos/smartcmd/MinecraftConsoles/releases/tags/nightly"; +const GAME_FALLBACK_URL = "https://github.com/smartcmd/MinecraftConsoles/releases/download/nightly/LCEWindows64.zip"; + +/// Read the currently installed game commit SHA +pub fn readGameVersion(allocator: std.mem.Allocator) !?[]const u8 { + const base = try safe_fs.getBaseDir(allocator); + var buf: [std.fs.max_path_bytes]u8 = undefined; + const path = try std.fmt.bufPrint(&buf, "{s}game_version", .{base}); + + const file = std.fs.openFileAbsolute(path, .{}) catch |err| switch (err) { + error.FileNotFound => return null, + else => return err, + }; + defer file.close(); + + const content = try file.readToEndAlloc(allocator, 256); + return std.mem.trimRight(u8, content, "\n\r "); +} + +/// Write the game version SHA +pub fn writeGameVersion(allocator: std.mem.Allocator, sha: []const u8) !void { + const base = try safe_fs.getBaseDir(allocator); + var buf: [std.fs.max_path_bytes]u8 = undefined; + const path = try std.fmt.bufPrint(&buf, "{s}game_version", .{base}); + + const file = try std.fs.createFileAbsolute(path, .{}); + defer file.close(); + try file.writeAll(sha); +} + +/// Check for game updates via GitHub API +pub fn checkForGameUpdate(allocator: std.mem.Allocator) !void { + game_update_status = .checking; + + // Read current installed version + const current_sha = try readGameVersion(allocator); + + var bundle = std.crypto.Certificate.Bundle{}; + bundle.rescan(allocator) catch {}; + + var client = std.http.Client{ .allocator = allocator, .ca_bundle = bundle }; + defer client.deinit(); + + const uri = try std.Uri.parse(GAME_API_URL); + // Use fetch API which encapsulates open/send/wait + var req = client.request(.GET, uri, .{ + .extra_headers = &.{ + .{ .name = "User-Agent", .value = "Flint/1.0" }, + .{ .name = "Accept", .value = "application/vnd.github.v3+json" }, + .{ .name = "Accept-Encoding", .value = "identity" }, + }, + }) catch |err| { + std.debug.print("game fetch request err: {}\n", .{err}); + game_update_status = .err; + return; + }; + defer req.deinit(); + + req.sendBodiless() catch |err| { + std.debug.print("game sendBodiless err: {}\n", .{err}); + game_update_status = .err; + return; + }; + + var server_header_buffer: [8192]u8 = undefined; + var response = req.receiveHead(&server_header_buffer) catch |err| { + std.debug.print("game receiveHead err: {}\n", .{err}); + game_update_status = .err; + return; + }; + + if (response.head.status != .ok) { + std.debug.print("game status not ok: {}\n", .{response.head.status}); + game_update_status = .err; + return; + } + + var reader = response.reader(&.{}); + const body = reader.allocRemaining(allocator, .unlimited) catch |err| { + std.debug.print("game readAllAlloc err: {}\n", .{err}); + game_update_status = .err; + return; + }; + defer allocator.free(body); + + // Decompress gzip if needed (GitHub may compress despite Accept-Encoding: identity) + const json_body = decompressBody(allocator, body) catch { + game_update_status = .err; + return; + }; + defer if (json_body.ptr != body.ptr) allocator.free(json_body); + + // Parse JSON + const parsed = std.json.parseFromSlice(std.json.Value, allocator, json_body, .{}) catch |err| { + std.debug.print("game json parse err: {}\n", .{err}); + game_update_status = .err; + return; + }; + defer parsed.deinit(); + + const root = parsed.value; + if (root != .object) { + game_update_status = .err; + return; + } + + // Get target_commitish + const commitish = root.object.get("target_commitish") orelse { + game_update_status = .err; + return; + }; + if (commitish != .string) { + game_update_status = .err; + return; + } + + available_game_sha = try allocator.dupe(u8, commitish.string); + + // Compare + if (current_sha) |cs| { + if (std.mem.eql(u8, cs, commitish.string)) { + game_update_status = .up_to_date; + } else { + game_update_status = .update_available; + } + } else { + // No version installed + game_update_status = .update_available; + } +} + +/// Find the download URL for the game zip asset +pub fn findGameAssetUrl(allocator: std.mem.Allocator) ![]const u8 { + var bundle = std.crypto.Certificate.Bundle{}; + bundle.rescan(allocator) catch {}; + + var client = std.http.Client{ .allocator = allocator, .ca_bundle = bundle }; + defer client.deinit(); + + const uri = try std.Uri.parse(GAME_API_URL); + // Use fetch API which encapsulates open/send/wait + var req = client.request(.GET, uri, .{ + .extra_headers = &.{ + .{ .name = "User-Agent", .value = "Flint/1.0" }, + .{ .name = "Accept", .value = "application/vnd.github.v3+json" }, + .{ .name = "Accept-Encoding", .value = "identity" }, + }, + }) catch { + return try allocator.dupe(u8, GAME_FALLBACK_URL); + }; + defer req.deinit(); + + req.sendBodiless() catch { + return try allocator.dupe(u8, GAME_FALLBACK_URL); + }; + + var server_header_buffer: [8192]u8 = undefined; + var response = req.receiveHead(&server_header_buffer) catch { + return try allocator.dupe(u8, GAME_FALLBACK_URL); + }; + + if (response.head.status != .ok) { + return try allocator.dupe(u8, GAME_FALLBACK_URL); + } + + var reader = response.reader(&.{}); + const body = reader.allocRemaining(allocator, .unlimited) catch { + return try allocator.dupe(u8, GAME_FALLBACK_URL); + }; + defer allocator.free(body); + + // Decompress gzip if needed + const json_body = decompressBody(allocator, body) catch { + return try allocator.dupe(u8, GAME_FALLBACK_URL); + }; + defer if (json_body.ptr != body.ptr) allocator.free(json_body); + + const parsed = std.json.parseFromSlice(std.json.Value, allocator, json_body, .{}) catch { + return try allocator.dupe(u8, GAME_FALLBACK_URL); + }; + defer parsed.deinit(); + + const root = parsed.value; + if (root != .object) return try allocator.dupe(u8, GAME_FALLBACK_URL); + + const assets = root.object.get("assets") orelse + return try allocator.dupe(u8, GAME_FALLBACK_URL); + + if (assets != .array) return try allocator.dupe(u8, GAME_FALLBACK_URL); + + // Look for zip containing "MinecraftConsoles" + for (assets.array.items) |asset| { + if (asset != .object) continue; + const name = asset.object.get("name") orelse continue; + if (name != .string) continue; + + if (std.mem.indexOf(u8, name.string, "MinecraftConsoles") != null and + std.mem.endsWith(u8, name.string, ".zip")) + { + const url = asset.object.get("browser_download_url") orelse continue; + if (url == .string) { + game_download_progress.asset_name = try allocator.dupe(u8, name.string); + return try allocator.dupe(u8, url.string); + } + } + } + + // Fallback: first zip + for (assets.array.items) |asset| { + if (asset != .object) continue; + const name = asset.object.get("name") orelse continue; + if (name != .string) continue; + + if (std.mem.endsWith(u8, name.string, ".zip")) { + const url = asset.object.get("browser_download_url") orelse continue; + if (url == .string) { + game_download_progress.asset_name = try allocator.dupe(u8, name.string); + return try allocator.dupe(u8, url.string); + } + } + } + + return try allocator.dupe(u8, GAME_FALLBACK_URL); +} + +/// Download and install game update +pub fn downloadGame(allocator: std.mem.Allocator) !void { + game_update_status = .downloading; + game_download_progress = .{ .is_downloading = true }; + + const sha = available_game_sha orelse return; + const sha_short = if (sha.len >= 7) sha[0..7] else sha; + + // Paths + const base = try safe_fs.getBaseDir(allocator); + const versions = try safe_fs.getVersionsDir(allocator); + defer allocator.free(versions); + + var dl_buf: [std.fs.max_path_bytes]u8 = undefined; + const downloading_dir = try std.fmt.bufPrint(&dl_buf, "{s}downloading/", .{versions}); + try safe_fs.ensureDir(downloading_dir); + + var zip_buf: [std.fs.max_path_bytes]u8 = undefined; + const zip_path = try std.fmt.bufPrint(&zip_buf, "{s}downloading/game.zip", .{versions}); + + // Get download URL + const url = try findGameAssetUrl(allocator); + defer allocator.free(url); + + // Download the file + var dl_bundle = std.crypto.Certificate.Bundle{}; + dl_bundle.rescan(allocator) catch {}; + + var dl_client = std.http.Client{ .allocator = allocator, .ca_bundle = dl_bundle }; + defer dl_client.deinit(); + + const dl_uri = try std.Uri.parse(url); + var dl_req = dl_client.request(.GET, dl_uri, .{ + .extra_headers = &.{ + .{ .name = "User-Agent", .value = "Flint/1.0" }, + .{ .name = "Accept-Encoding", .value = "identity" }, + }, + }) catch return error.HttpRequestFailed; + defer dl_req.deinit(); + + dl_req.sendBodiless() catch return error.HttpRequestFailed; + + var dl_header_buf: [8192]u8 = undefined; + var dl_response = dl_req.receiveHead(&dl_header_buf) catch return error.HttpRequestFailed; + + // Get content length from response headers for progress tracking + game_download_progress.total_bytes = dl_response.head.content_length orelse 0; + + // Write to file + const out_file = try std.fs.createFileAbsolute(zip_path, .{}); + defer out_file.close(); + + var dl_reader = dl_response.reader(&.{}); + var bytes_written: u64 = 0; + const total = game_download_progress.total_bytes; + var read_buf: [8192]u8 = undefined; + while (total == 0 or bytes_written < total) { + // Limit read size to remaining bytes if content-length is known + const remaining = if (total > 0) @min(read_buf.len, @as(usize, @intCast(total - bytes_written))) else read_buf.len; + const n = dl_reader.readSliceShort(read_buf[0..remaining]) catch break; + if (n == 0) break; + out_file.writeAll(read_buf[0..n]) catch break; + bytes_written += n; + game_download_progress.bytes_received = bytes_written; + } + + // Extract + game_download_progress.is_extracting = true; + std.debug.print("Download complete ({} bytes), extracting...\n", .{bytes_written}); + + var target_buf: [std.fs.max_path_bytes]u8 = undefined; + const target_dir = std.fmt.bufPrint(&target_buf, "{s}nightly-{s}/", .{ versions, sha_short }) catch return error.OutOfMemory; + safe_fs.ensureDir(target_dir) catch |err| { + std.debug.print("Failed to create target dir: {}\n", .{err}); + return err; + }; + + // Use system unzip for extraction + var child = std.process.Child.init( + &.{ "unzip", "-o", zip_path, "-d", target_dir }, + allocator, + ); + child.stdout_behavior = .Ignore; + child.stderr_behavior = .Ignore; + child.spawn() catch |err| { + std.debug.print("Failed to spawn unzip: {}\n", .{err}); + return err; + }; + _ = child.wait() catch |err| { + std.debug.print("unzip wait failed: {}\n", .{err}); + return err; + }; + std.debug.print("Extraction complete\n", .{}); + + // Check for single wrapper directory and strip it + stripWrapperDir(allocator, target_dir) catch |err| { + std.debug.print("stripWrapperDir failed (non-fatal): {}\n", .{err}); + }; + + // Write game version + writeGameVersion(allocator, sha) catch |err| { + std.debug.print("writeGameVersion failed: {}\n", .{err}); + return err; + }; + + // Clean up downloading dir + safe_fs.safeDelete(allocator, downloading_dir) catch {}; + + // Clean old versions + cleanOldVersions(allocator) catch |err| { + std.debug.print("cleanOldVersions failed (non-fatal): {}\n", .{err}); + }; + + game_download_progress.done = true; + game_download_progress.is_downloading = false; + game_download_progress.is_extracting = false; + game_update_status = .up_to_date; + std.debug.print("Game update installed successfully\n", .{}); + + // Refresh the installed versions list + refreshInstalledVersions(allocator); + + _ = base; +} + +/// If extracted dir has a single top-level folder, move its contents up +fn stripWrapperDir(allocator: std.mem.Allocator, target_dir: []const u8) !void { + var dir = try std.fs.openDirAbsolute(target_dir, .{ .iterate = true }); + defer dir.close(); + + var entries = std.ArrayList([]const u8).empty; + defer { + for (entries.items) |e| allocator.free(e); + entries.deinit(allocator); + } + + var it = dir.iterate(); + var single_dir: ?[]const u8 = null; + var count: u32 = 0; + while (try it.next()) |entry| { + count += 1; + if (count == 1 and entry.kind == .directory) { + single_dir = try allocator.dupe(u8, entry.name); + } else { + if (single_dir) |sd| { + allocator.free(sd); + single_dir = null; + } + return; // Multiple entries or first isn't a dir + } + } + + if (single_dir) |wrapper_name| { + defer allocator.free(wrapper_name); + + // Move contents from wrapper to target_dir + var wrapper_buf: [std.fs.max_path_bytes]u8 = undefined; + const wrapper_path = try std.fmt.bufPrint(&wrapper_buf, "{s}{s}/", .{ target_dir, wrapper_name }); + + // Use system mv + var child = std.process.Child.init( + &.{ "sh", "-c", try std.fmt.allocPrint(allocator, "mv {s}* {s} 2>/dev/null; mv {s}.* {s} 2>/dev/null; rmdir {s}", .{ wrapper_path, target_dir, wrapper_path, target_dir, wrapper_path }) }, + allocator, + ); + try child.spawn(); + _ = try child.wait(); + } +} + +/// Keep last 2 versions, safeDelete older ones +fn cleanOldVersions(allocator: std.mem.Allocator) !void { + const versions_dir = try safe_fs.getVersionsDir(allocator); + defer allocator.free(versions_dir); + + var dir = std.fs.openDirAbsolute(versions_dir, .{ .iterate = true }) catch return; + defer dir.close(); + + var version_names = std.ArrayList([]const u8).empty; + defer { + for (version_names.items) |n| allocator.free(n); + version_names.deinit(allocator); + } + + var it = dir.iterate(); + while (try it.next()) |entry| { + if (entry.kind == .directory and std.mem.startsWith(u8, entry.name, "nightly-")) { + try version_names.append(allocator, try allocator.dupe(u8, entry.name)); + } + } + + if (version_names.items.len <= 2) return; + + // Sort and keep last 2 + std.mem.sort([]const u8, version_names.items, {}, struct { + fn lessThan(_: void, a: []const u8, b_val: []const u8) bool { + return std.mem.lessThan(u8, a, b_val); + } + }.lessThan); + + // Delete all but last 2 + const to_delete = version_names.items[0 .. version_names.items.len - 2]; + for (to_delete) |name| { + var buf: [std.fs.max_path_bytes]u8 = undefined; + const full_path = std.fmt.bufPrint(&buf, "{s}{s}", .{ versions_dir, name }) catch continue; + safe_fs.safeDelete(allocator, full_path) catch {}; + } +} + +/// Get the short SHA for display (first 7 chars) +pub fn getGameVersionShort(allocator: std.mem.Allocator) !?[]const u8 { + const sha = try readGameVersion(allocator); + if (sha) |s| { + if (s.len >= 7) { + return try allocator.dupe(u8, s[0..7]); + } + return s; + } + return null; +} diff --git a/src/launcher.zig b/src/launcher.zig new file mode 100644 index 0000000..9612144 --- /dev/null +++ b/src/launcher.zig @@ -0,0 +1,307 @@ +const std = @import("std"); +const builtin = @import("builtin"); +const safe_fs = @import("safe_fs.zig"); + +/// Wine status for UI display +pub const WineStatus = enum { + not_checked, + available, + not_found, + initializing_prefix, +}; + +/// Game process status +pub const GameStatus = enum { + not_running, + running, + initializing_wine, +}; + +pub var wine_version: ?[]const u8 = null; +pub var wine_status: WineStatus = .not_checked; +pub var game_status: GameStatus = .not_running; +pub var game_child: ?std.process.Child = null; + +/// Ensure the GameHDD symlink/junction points to saves_path. +/// Runs before every launch. +pub fn ensureSavesLink(allocator: std.mem.Allocator, version_dir: []const u8, saves_path: []const u8) !void { + // Ensure Windows64 directory exists at the root of the install + var win64_buf: [std.fs.max_path_bytes]u8 = undefined; + const win64_path = try std.fmt.bufPrint(&win64_buf, "{s}/Windows64", .{version_dir}); + safe_fs.ensureDir(win64_path) catch {}; + + var gamehdd_buf: [std.fs.max_path_bytes]u8 = undefined; + const gamehdd_path = try std.fmt.bufPrint(&gamehdd_buf, "{s}/Windows64/GameHDD", .{version_dir}); + + // Check what exists at GameHDD + const stat = std.fs.cwd().statFile(gamehdd_path) catch |err| switch (err) { + error.FileNotFound => { + // Does not exist — create symlink/junction + try createLink(gamehdd_path, saves_path); + return; + }, + else => return err, + }; + _ = stat; + + // Check if it's a symlink + const link_target = std.fs.readLinkAbsolute(gamehdd_path, &gamehdd_buf) catch |err| switch (err) { + error.NotLink => { + // It's a real directory — move contents to saves_path, then replace with link + try moveContentsToSaves(allocator, gamehdd_path, saves_path); + try std.fs.deleteTreeAbsolute(gamehdd_path); + try createLink(gamehdd_path, saves_path); + return; + }, + else => return err, + }; + + // It is a symlink — check if correct target + if (std.mem.eql(u8, link_target, saves_path)) { + // Correct target, do nothing + return; + } + + // Wrong target — delete and re-create + try std.fs.deleteFileAbsolute(gamehdd_path); + try createLink(gamehdd_path, saves_path); +} + +fn createLink(link_path: []const u8, target: []const u8) !void { + if (comptime builtin.os.tag == .windows) { + // Windows: use directory junction via NTFS reparse point + // For now, use symlink as placeholder — full junction impl requires Win32 API + try std.fs.symLinkAbsolute(target, link_path, .{ .is_directory = true }); + } else { + // Linux: standard symlink + try std.fs.symLinkAbsolute(target, link_path, .{}); + } +} + +fn moveContentsToSaves(allocator: std.mem.Allocator, src_dir: []const u8, saves_path: []const u8) !void { + var dir = try std.fs.openDirAbsolute(src_dir, .{ .iterate = true }); + defer dir.close(); + + var it = dir.iterate(); + while (try it.next()) |entry| { + var src_buf: [std.fs.max_path_bytes]u8 = undefined; + const src_path = try std.fmt.bufPrint(&src_buf, "{s}/{s}", .{ src_dir, entry.name }); + var dst_buf: [std.fs.max_path_bytes]u8 = undefined; + const dst_path = try std.fmt.bufPrint(&dst_buf, "{s}/{s}", .{ saves_path, entry.name }); + + // Check if dest already exists + std.fs.accessAbsolute(dst_path, .{}) catch { + // Doesn't exist — rename/move + std.fs.renameAbsolute(src_path, dst_path) catch { + // Cross-device move — would need copy, skip for now + std.log.warn("Could not move {s} to saves (cross-device?)", .{entry.name}); + }; + continue; + }; + // Already exists in saves, skip (don't overwrite user saves) + _ = allocator; + } +} + +/// Spawn the game process with preset connection info +/// Exe args: Minecraft.Client.exe -name -ip -port +pub fn spawnGame(allocator: std.mem.Allocator, version_dir: []const u8, saves_path: []const u8, preset: anytype) !void { + // Ensure saves link + try ensureSavesLink(allocator, version_dir, saves_path); + + // Build argv dynamically based on preset fields + var argv = std.ArrayList([]const u8).empty; + defer argv.deinit(allocator); + + try argv.append(allocator, "Minecraft.Client.exe"); + + // Default username if empty + if (preset.username.len > 0) { + try argv.append(allocator, "-name"); + try argv.append(allocator, preset.username); + } else { + try argv.append(allocator, "-name"); + try argv.append(allocator, "Player"); + } + + if (preset.ip.len > 0) { + try argv.append(allocator, "-ip"); + try argv.append(allocator, preset.ip); + } + if (preset.port.len > 0) { + try argv.append(allocator, "-port"); + try argv.append(allocator, preset.port); + } + + if (comptime builtin.os.tag == .linux) { + // Native Linux: Use Wine + const wineprefix = try safe_fs.getWinePrefixDir(allocator); + defer allocator.free(wineprefix); + + var env_map = try std.process.getEnvMap(allocator); + defer env_map.deinit(); + try env_map.put("WINEPREFIX", wineprefix); + try env_map.put("WINEDEBUG", "-all"); // Suppress wine spam + + // Prepend wine command + try argv.insert(allocator, 0, "wine"); + + std.debug.print("Spawning game with args: ", .{}); + for (argv.items) |arg| { + std.debug.print("'{s}' ", .{arg}); + } + std.debug.print("\n", .{}); + + var child = std.process.Child.init(argv.items, allocator); + child.cwd = version_dir; + child.env_map = &env_map; + try child.spawn(); + game_child = child; + } else { + // Windows: Native execution + var child = std.process.Child.init(argv.items, allocator); + child.cwd = version_dir; + try child.spawn(); + game_child = child; + } + + game_status = .running; +} + +/// Convenience wrapper for the UI +pub fn launch(allocator: std.mem.Allocator, config: @import("config.zig").Config) !void { + if (game_status == .running) return; + + if (try findLatestVersion(allocator)) |version_dir| { + defer allocator.free(version_dir); + try spawnGame(allocator, version_dir, config.saves_path, config.presets[config.active_preset]); + } else { + std.debug.print("No game version found to launch.\n", .{}); + } +} + +/// Check if game process is still running (called each frame) +pub fn pollGameProcess() void { + if (game_child) |*child| { + const result = child.wait() catch { + game_status = .not_running; + game_child = null; + return; + }; + _ = result; + game_status = .not_running; + game_child = null; + } +} + +/// Check if Wine is installed (Linux only) +pub fn checkWine(allocator: std.mem.Allocator) !void { + if (comptime builtin.os.tag != .linux) return; + + var child = std.process.Child.init( + &.{ "wine", "--version" }, + allocator, + ); + child.stdin_behavior = .Ignore; + child.stdout_behavior = .Pipe; + child.stderr_behavior = .Pipe; + try child.spawn(); + + const stdout = child.stdout.?.readToEndAlloc(allocator, 1024) catch ""; + const result = child.wait() catch { + wine_status = .not_found; + return; + }; + + if (result.Exited == 0 and stdout.len > 0) { + // Trim trailing newline + wine_version = std.mem.trimRight(u8, stdout, "\n\r "); + wine_status = .available; + } else { + wine_status = .not_found; + } +} + +/// Initialize Wine prefix (Linux only, first run) +pub fn initWinePrefix(allocator: std.mem.Allocator) !void { + if (comptime builtin.os.tag != .linux) return; + + game_status = .initializing_wine; + wine_status = .initializing_prefix; + + const wineprefix = try safe_fs.getWinePrefixDir(allocator); + + var env_map = std.process.EnvMap.init(allocator); + defer env_map.deinit(); + try env_map.put("WINEPREFIX", wineprefix); + + var child = std.process.Child.init( + &.{ "wineboot", "--init" }, + allocator, + ); + child.env_map = &env_map; + try child.spawn(); + + _ = child.wait() catch {}; + + wine_status = .available; + game_status = .not_running; +} + +/// Reset Wine prefix: delete and re-init +pub fn resetWinePrefix(allocator: std.mem.Allocator) !void { + if (comptime builtin.os.tag != .linux) return; + + const wineprefix = try safe_fs.getWinePrefixDir(allocator); + + // Delete wineprefix directory directly (NOT through safeDelete — this is the only + // code path allowed to delete wineprefix) + std.fs.deleteTreeAbsolute(wineprefix) catch {}; + + // Re-init + try initWinePrefix(allocator); +} + +/// Open a folder in the system file manager +pub fn openFolder(allocator: std.mem.Allocator, path: []const u8) !void { + if (comptime builtin.os.tag == .windows) { + var child = std.process.Child.init( + &.{ "explorer.exe", path }, + allocator, + ); + try child.spawn(); + } else { + var child = std.process.Child.init( + &.{ "xdg-open", path }, + allocator, + ); + try child.spawn(); + } +} + +/// Find the latest installed version directory +pub fn findLatestVersion(allocator: std.mem.Allocator) !?[]const u8 { + const versions_dir = try safe_fs.getVersionsDir(allocator); + defer allocator.free(versions_dir); + + var dir = std.fs.openDirAbsolute(versions_dir, .{ .iterate = true }) catch return null; + defer dir.close(); + + var latest: ?[]const u8 = null; + var it = dir.iterate(); + while (try it.next()) |entry| { + if (entry.kind == .directory and std.mem.startsWith(u8, entry.name, "nightly-")) { + if (latest) |l| allocator.free(l); + latest = try allocator.dupe(u8, entry.name); + } + } + + if (latest) |name| { + var buf: [std.fs.max_path_bytes]u8 = undefined; + const full = try std.fmt.bufPrint(&buf, "{s}{s}", .{ versions_dir, name }); + allocator.free(name); + return try allocator.dupe(u8, full); + } + + return null; +} diff --git a/src/main.zig b/src/main.zig new file mode 100644 index 0000000..5dac6f4 --- /dev/null +++ b/src/main.zig @@ -0,0 +1,206 @@ +const std = @import("std"); +const builtin = @import("builtin"); +const c = @import("c_imports.zig").c; + +const renderer_mod = @import("renderer.zig"); +const ui = @import("ui.zig"); +const config_mod = @import("config.zig"); +const safe_fs = @import("safe_fs.zig"); +const launcher_mod = @import("launcher.zig"); +const game_updater = @import("game_updater.zig"); +const updater_mod = @import("updater.zig"); + +// ── Embedded assets ─────────────────────────────────────────────────── +const bg_data = @embedFile("assets/background.jpg"); +const font_data = @embedFile("assets/MinecraftStandard.otf"); + +fn clayErrorHandler(err: c.Clay_ErrorData) callconv(.c) void { + const msg = err.errorText; + if (msg.chars != null and msg.length > 0) { + std.log.err("Clay: {s}", .{msg.chars[0..@intCast(msg.length)]}); + } +} + +pub fn main() !void { + var gpa = std.heap.GeneralPurposeAllocator(.{}){}; + defer _ = gpa.deinit(); + const allocator = gpa.allocator(); + + // ── Startup cleanup ─────────────────────────────────────────────── + updater_mod.cleanupOldLauncher(); + try safe_fs.ensureBaseDirs(allocator); + + // Delete abandoned downloading/ dir + const versions_dir = try safe_fs.getVersionsDir(allocator); + defer allocator.free(versions_dir); + { + var dl_buf: [std.fs.max_path_bytes]u8 = undefined; + const dl_path = try std.fmt.bufPrint(&dl_buf, "{s}downloading/", .{versions_dir}); + safe_fs.safeDelete(allocator, dl_path) catch {}; + } + + // ── Load config ─────────────────────────────────────────────────── + ui.ui_state.config = try config_mod.loadConfig(allocator); + try safe_fs.assertSavesNotInVersions(allocator, ui.ui_state.config.saves_path); + + // ── Game version display ────────────────────────────────────────── + if (game_updater.getGameVersionShort(allocator) catch null) |gv| { + const written = std.fmt.bufPrint(&ui.ui_state.game_version_display, "nightly-{s}", .{gv}) catch ""; + ui.ui_state.game_version_len = written.len; + } + + // Scan installed versions + game_updater.refreshInstalledVersions(allocator); + + // Auto-check for game update in background + const update_thread = std.Thread.spawn(.{}, struct { + fn run() void { + game_updater.checkForGameUpdate(std.heap.page_allocator) catch {}; + } + }.run, .{}) catch null; + if (update_thread) |t| t.detach(); + + // ── SDL3 init ───────────────────────────────────────────────────── + if (!c.SDL_Init(c.SDL_INIT_VIDEO)) { + std.log.err("SDL_Init: {s}", .{c.SDL_GetError()}); + return; + } + defer c.SDL_Quit(); + + var window: ?*c.SDL_Window = null; + var sdl_renderer: ?*c.SDL_Renderer = null; + window = c.SDL_CreateWindow("Flint", 800, 600, c.SDL_WINDOW_RESIZABLE | c.SDL_WINDOW_HIGH_PIXEL_DENSITY); + if (window == null) { + std.log.err("Window: {s}", .{c.SDL_GetError()}); + return; + } + sdl_renderer = c.SDL_CreateRenderer(window.?, null); + if (sdl_renderer == null) { + std.log.err("Renderer: {s}", .{c.SDL_GetError()}); + return; + } + defer { + if (sdl_renderer) |r| c.SDL_DestroyRenderer(r); + if (window) |w| c.SDL_DestroyWindow(w); + } + _ = c.SDL_SetWindowMinimumSize(window.?, 854, 480); + _ = c.SDL_StartTextInput(window.?); + + // ── Renderer init (asset loading) ───────────────────────────────── + var render_state = renderer_mod.init(sdl_renderer.?, bg_data, font_data); + defer renderer_mod.deinit(&render_state); + + // ── Clay init ───────────────────────────────────────────────────── + const clay_size = c.Clay_MinMemorySize(); + const clay_mem = try allocator.alloc(u8, clay_size); + defer allocator.free(clay_mem); + + var w: c_int = 0; + var h: c_int = 0; + _ = c.SDL_GetWindowSizeInPixels(window.?, &w, &h); + render_state.window_width = @floatFromInt(w); + render_state.window_height = @floatFromInt(h); + + _ = c.Clay_Initialize( + .{ .memory = clay_mem.ptr, .capacity = clay_size }, + .{ .width = render_state.window_width, .height = render_state.window_height }, + .{ .errorHandlerFunction = clayErrorHandler, .userData = null }, + ); + // Pass font pointer through user_data so renderer.measureText can use it + c.Clay_SetMeasureTextFunction(renderer_mod.measureText, render_state.font); + + // ── Wine check (Linux) ──────────────────────────────────────────── + if (comptime builtin.os.tag == .linux) { + launcher_mod.checkWine(allocator) catch {}; + } + + // ── Main loop ───────────────────────────────────────────────────── + var running = true; + while (running) { + var event: c.SDL_Event = undefined; + while (c.SDL_PollEvent(&event)) { + switch (event.type) { + c.SDL_EVENT_QUIT => running = false, + c.SDL_EVENT_WINDOW_RESIZED => { + var new_w: c_int = 0; + var new_h: c_int = 0; + _ = c.SDL_GetWindowSizeInPixels(window.?, &new_w, &new_h); + render_state.window_width = @floatFromInt(new_w); + render_state.window_height = @floatFromInt(new_h); + c.Clay_SetLayoutDimensions(.{ + .width = render_state.window_width, + .height = render_state.window_height, + }); + }, + c.SDL_EVENT_MOUSE_MOTION => { + var log_w: c_int = 0; + var pix_w: c_int = 0; + _ = c.SDL_GetWindowSize(window.?, &log_w, null); + _ = c.SDL_GetWindowSizeInPixels(window.?, &pix_w, null); + const scale = if (log_w > 0) @as(f32, @floatFromInt(pix_w)) / @as(f32, @floatFromInt(log_w)) else 1.0; + + c.Clay_SetPointerState( + .{ .x = event.motion.x * scale, .y = event.motion.y * scale }, + event.motion.state & c.SDL_BUTTON_LMASK != 0, + ); + }, + c.SDL_EVENT_MOUSE_BUTTON_DOWN => { + var log_w: c_int = 0; + var pix_w: c_int = 0; + _ = c.SDL_GetWindowSize(window.?, &log_w, null); + _ = c.SDL_GetWindowSizeInPixels(window.?, &pix_w, null); + const scale = if (log_w > 0) @as(f32, @floatFromInt(pix_w)) / @as(f32, @floatFromInt(log_w)) else 1.0; + + if (event.button.button == c.SDL_BUTTON_LEFT) { + c.Clay_SetPointerState(.{ .x = event.button.x * scale, .y = event.button.y * scale }, true); + ui.handleClick(); + } + }, + c.SDL_EVENT_MOUSE_BUTTON_UP => { + var log_w: c_int = 0; + var pix_w: c_int = 0; + _ = c.SDL_GetWindowSize(window.?, &log_w, null); + _ = c.SDL_GetWindowSizeInPixels(window.?, &pix_w, null); + const scale = if (log_w > 0) @as(f32, @floatFromInt(pix_w)) / @as(f32, @floatFromInt(log_w)) else 1.0; + + c.Clay_SetPointerState(.{ .x = event.button.x * scale, .y = event.button.y * scale }, false); + }, + c.SDL_EVENT_MOUSE_WHEEL => { + c.Clay_UpdateScrollContainers(true, .{ .x = event.wheel.x * 10, .y = event.wheel.y * 10 }, 0.016); + }, + c.SDL_EVENT_TEXT_INPUT => { + if (event.text.text != null) { + const text_slice = std.mem.span(event.text.text); + ui.handleTextInput(text_slice); + } + }, + c.SDL_EVENT_KEY_DOWN => { + if (event.key.key == c.SDLK_BACKSPACE) { + ui.handleBackspace(); + } else if (event.key.key == c.SDLK_RETURN or event.key.key == c.SDLK_RETURN2) { + ui.handleReturn(); + } + }, + else => {}, + } + } + + // Poll game process + launcher_mod.pollGameProcess(); + + // Layout + const cmds = ui.layoutRoot(); + + // Render + _ = c.SDL_SetRenderDrawColor(sdl_renderer.?, 0, 0, 0, 255); + _ = c.SDL_RenderClear(sdl_renderer.?); + renderer_mod.renderBackground(&render_state); + renderer_mod.renderClayCommands(&render_state, cmds); + _ = c.SDL_RenderPresent(sdl_renderer.?); + + c.SDL_Delay(16); + } + + // Save config on exit + config_mod.saveConfig(allocator, &ui.ui_state.config) catch {}; +} diff --git a/src/renderer.zig b/src/renderer.zig new file mode 100644 index 0000000..f32a1f1 --- /dev/null +++ b/src/renderer.zig @@ -0,0 +1,206 @@ +const std = @import("std"); +const c = @import("c_imports.zig").c; + +/// Holds all SDL rendering resources +pub const RenderState = struct { + renderer: *c.SDL_Renderer, + font: ?*c.TTF_Font = null, + text_engine: ?*c.TTF_TextEngine = null, + bg_texture: ?*c.SDL_Texture = null, + window_width: f32 = 854, + window_height: f32 = 480, +}; + +/// Initialize renderer: decode embedded background JPG, load embedded font +pub fn init( + sdl_renderer: *c.SDL_Renderer, + bg_data: []const u8, + font_data: []const u8, +) RenderState { + var state = RenderState{ .renderer = sdl_renderer }; + + // ── Background image from embedded bytes ── + var bg_w: c_int = 0; + var bg_h: c_int = 0; + var bg_ch: c_int = 0; + const pixels = c.stbi_load_from_memory( + bg_data.ptr, + @intCast(bg_data.len), + &bg_w, + &bg_h, + &bg_ch, + 4, + ); + if (pixels != null) { + const surf = c.SDL_CreateSurfaceFrom(bg_w, bg_h, c.SDL_PIXELFORMAT_RGBA32, @ptrCast(pixels), bg_w * 4); + if (surf != null) { + state.bg_texture = c.SDL_CreateTextureFromSurface(sdl_renderer, surf); + c.SDL_DestroySurface(surf); + } else { + std.log.err("Failed to create BG surface: {s}", .{c.SDL_GetError()}); + } + c.stbi_image_free(pixels); + } else { + std.log.err("stbi_load failed: {s}", .{c.stbi_failure_reason()}); + } + + // ── SDL3_ttf ── + _ = c.TTF_Init(); + state.text_engine = c.TTF_CreateRendererTextEngine(sdl_renderer); + + // Write embedded font to tmp file (SDL3_ttf needs IOStream) + const tmp_path = "/tmp/lcelauncher_font.otf"; + if (std.fs.createFileAbsolute(tmp_path, .{})) |f| { + f.writeAll(font_data) catch {}; + f.close(); + const rw = c.SDL_IOFromFile(tmp_path, "rb"); + if (rw != null) { + state.font = c.TTF_OpenFontIO(rw, true, 16); + if (state.font == null) { + std.log.err("TTF_OpenFontIO failed: {s}", .{c.SDL_GetError()}); + } else { + _ = c.TTF_SetFontHinting(state.font, c.TTF_HINTING_NONE); + std.log.info("Loaded TTF. Family: {s}, face: {s}", .{ + c.TTF_GetFontFamilyName(state.font), + c.TTF_GetFontStyleName(state.font), + }); + } + } + } else |_| {} + + return state; +} + +pub fn deinit(state: *RenderState) void { + if (state.font) |f| c.TTF_CloseFont(f); + if (state.text_engine) |te| c.TTF_DestroyRendererTextEngine(te); + if (state.bg_texture) |t| c.SDL_DestroyTexture(t); + c.TTF_Quit(); +} + +/// Clay text-measurement callback (C calling-convention) +/// user_data is the TTF_Font pointer passed via Clay_SetMeasureTextFunction +pub fn measureText( + text_slice: c.Clay_StringSlice, + text_config: [*c]c.Clay_TextElementConfig, + user_data: ?*anyopaque, +) callconv(.c) c.Clay_Dimensions { + const font: ?*c.TTF_Font = @ptrCast(@alignCast(user_data)); + + if (font) |f| { + _ = c.TTF_SetFontSize(f, @floatFromInt(text_config.*.fontSize)); + var w: c_int = 0; + var h: c_int = 0; + _ = c.TTF_GetStringSize(f, text_slice.chars, @intCast(text_slice.length), &w, &h); + return .{ .width = @floatFromInt(w), .height = @floatFromInt(h) }; + } + + // Fallback: estimate 8px per character + return .{ + .width = @as(f32, @floatFromInt(text_slice.length)) * 8.0, + .height = 16.0, + }; +} + +/// Render the full-window scaled background + darkening overlay +pub fn renderBackground(state: *RenderState) void { + if (state.bg_texture) |tex| { + const dest = c.SDL_FRect{ .x = 0, .y = 0, .w = state.window_width, .h = state.window_height }; + _ = c.SDL_RenderTexture(state.renderer, tex, null, &dest); + } + + // Darkening overlay RGBA(0,0,0,180) + _ = c.SDL_SetRenderDrawBlendMode(state.renderer, c.SDL_BLENDMODE_BLEND); + _ = c.SDL_SetRenderDrawColor(state.renderer, 0, 0, 0, 180); + const overlay = c.SDL_FRect{ .x = 0, .y = 0, .w = state.window_width, .h = state.window_height }; + _ = c.SDL_RenderFillRect(state.renderer, &overlay); +} + +/// Process all Clay render commands and draw via SDL3 +pub fn renderClayCommands(state: *RenderState, commands: c.Clay_RenderCommandArray) void { + var i: i32 = 0; + while (i < commands.length) : (i += 1) { + const cmd = c.Clay_RenderCommandArray_Get(@constCast(&commands), i); + if (cmd == null) continue; + + const bb = cmd.*.boundingBox; + const rect = c.SDL_FRect{ .x = bb.x, .y = bb.y, .w = bb.width, .h = bb.height }; + + switch (cmd.*.commandType) { + c.CLAY_RENDER_COMMAND_TYPE_RECTANGLE => { + const cfg = &cmd.*.renderData.rectangle; + _ = c.SDL_SetRenderDrawBlendMode(state.renderer, c.SDL_BLENDMODE_BLEND); + _ = c.SDL_SetRenderDrawColor(state.renderer, @intFromFloat(cfg.backgroundColor.r), @intFromFloat(cfg.backgroundColor.g), @intFromFloat(cfg.backgroundColor.b), @intFromFloat(cfg.backgroundColor.a)); + _ = c.SDL_RenderFillRect(state.renderer, &rect); + }, + c.CLAY_RENDER_COMMAND_TYPE_TEXT => { + const cfg = &cmd.*.renderData.text; + if (state.font) |font| { + if (state.text_engine) |te| { + _ = c.TTF_SetFontSize(font, @floatFromInt(cfg.fontSize)); + + // Drop shadow (+1,+1 black) + const shadow = c.TTF_CreateText(te, font, cfg.stringContents.chars, @intCast(cfg.stringContents.length)); + if (shadow != null) { + _ = c.TTF_SetTextColor(shadow, 0, 0, 0, @intFromFloat(cfg.textColor.a * 0.5)); + _ = c.TTF_DrawRendererText(shadow, @round(rect.x) + 1.0, @round(rect.y) + 1.0); + c.TTF_DestroyText(shadow); + } + + // Main text + const text = c.TTF_CreateText(te, font, cfg.stringContents.chars, @intCast(cfg.stringContents.length)); + if (text != null) { + _ = c.TTF_SetTextColor(text, @intFromFloat(cfg.textColor.r), @intFromFloat(cfg.textColor.g), @intFromFloat(cfg.textColor.b), @intFromFloat(cfg.textColor.a)); + _ = c.TTF_DrawRendererText(text, @round(rect.x), @round(rect.y)); + c.TTF_DestroyText(text); + } + } + } + }, + c.CLAY_RENDER_COMMAND_TYPE_BORDER => { + const cfg = &cmd.*.renderData.border; + _ = c.SDL_SetRenderDrawBlendMode(state.renderer, c.SDL_BLENDMODE_BLEND); + _ = c.SDL_SetRenderDrawColor(state.renderer, @intFromFloat(cfg.color.r), @intFromFloat(cfg.color.g), @intFromFloat(cfg.color.b), @intFromFloat(cfg.color.a)); + + if (cfg.width.top > 0) { + const line = c.SDL_FRect{ .x = rect.x, .y = rect.y, .w = rect.w, .h = @floatFromInt(cfg.width.top) }; + _ = c.SDL_RenderFillRect(state.renderer, &line); + } + if (cfg.width.bottom > 0) { + const bh: f32 = @floatFromInt(cfg.width.bottom); + const line = c.SDL_FRect{ .x = rect.x, .y = rect.y + rect.h - bh, .w = rect.w, .h = bh }; + _ = c.SDL_RenderFillRect(state.renderer, &line); + } + if (cfg.width.left > 0) { + const line = c.SDL_FRect{ .x = rect.x, .y = rect.y, .w = @floatFromInt(cfg.width.left), .h = rect.h }; + _ = c.SDL_RenderFillRect(state.renderer, &line); + } + if (cfg.width.right > 0) { + const rw: f32 = @floatFromInt(cfg.width.right); + const line = c.SDL_FRect{ .x = rect.x + rect.w - rw, .y = rect.y, .w = rw, .h = rect.h }; + _ = c.SDL_RenderFillRect(state.renderer, &line); + } + }, + c.CLAY_RENDER_COMMAND_TYPE_SCISSOR_START => { + const clip = c.SDL_Rect{ + .x = @intFromFloat(bb.x), + .y = @intFromFloat(bb.y), + .w = @intFromFloat(bb.width), + .h = @intFromFloat(bb.height), + }; + _ = c.SDL_SetRenderClipRect(state.renderer, &clip); + }, + c.CLAY_RENDER_COMMAND_TYPE_SCISSOR_END => { + _ = c.SDL_SetRenderClipRect(state.renderer, null); + }, + c.CLAY_RENDER_COMMAND_TYPE_IMAGE => { + const tex: ?*c.SDL_Texture = @ptrCast(@alignCast(cmd.*.renderData.image.imageData)); + if (tex) |t| { + const dest = c.SDL_FRect{ .x = rect.x, .y = rect.y, .w = rect.w, .h = rect.h }; + _ = c.SDL_RenderTexture(state.renderer, t, null, &dest); + } + }, + else => {}, + } + } +} diff --git a/src/safe_fs.zig b/src/safe_fs.zig new file mode 100644 index 0000000..3c22993 --- /dev/null +++ b/src/safe_fs.zig @@ -0,0 +1,148 @@ +const std = @import("std"); +const builtin = @import("builtin"); + +/// Safe filesystem operations with path validation. +/// All recursive deletes in the codebase MUST go through safeDelete. +pub const SafeFsError = error{ + UnsafePath, + SavesPathInsideVersionsDir, +}; + +var base_dir_buf: [std.fs.max_path_bytes]u8 = undefined; +var base_dir_len: usize = 0; +var base_dir_initialized: bool = false; + +/// Returns the resolved base directory ~/.lcelauncher/ +pub fn getBaseDir(allocator: std.mem.Allocator) ![]const u8 { + if (base_dir_initialized) { + return base_dir_buf[0..base_dir_len]; + } + + const home = if (comptime builtin.os.tag == .windows) + std.process.getEnvVarOwned(allocator, "USERPROFILE") catch + std.process.getEnvVarOwned(allocator, "HOMEDRIVE") catch + return error.UnsafePath + else + std.process.getEnvVarOwned(allocator, "HOME") catch return error.UnsafePath; + defer allocator.free(home); + + const path = try std.fmt.bufPrint(&base_dir_buf, "{s}/.flintlauncher/", .{home}); + base_dir_len = path.len; + base_dir_initialized = true; + return path; +} + +/// Returns the versions directory path ~/.lcelauncher/versions/ +pub fn getVersionsDir(allocator: std.mem.Allocator) ![]const u8 { + const base = try getBaseDir(allocator); + var buf: [std.fs.max_path_bytes]u8 = undefined; + const result = try std.fmt.bufPrint(&buf, "{s}versions/", .{base}); + const duped = try allocator.dupe(u8, result); + return duped; +} + +/// Returns the saves directory path ~/.lcelauncher/saves/ +pub fn getSavesDir(allocator: std.mem.Allocator) ![]const u8 { + const base = try getBaseDir(allocator); + var buf: [std.fs.max_path_bytes]u8 = undefined; + const result = try std.fmt.bufPrint(&buf, "{s}saves/", .{base}); + const duped = try allocator.dupe(u8, result); + return duped; +} + +/// Returns the wineprefix directory path ~/.lcelauncher/wineprefix/ +pub fn getWinePrefixDir(allocator: std.mem.Allocator) ![]const u8 { + const base = try getBaseDir(allocator); + var buf: [std.fs.max_path_bytes]u8 = undefined; + const result = try std.fmt.bufPrint(&buf, "{s}wineprefix/", .{base}); + const duped = try allocator.dupe(u8, result); + return duped; +} + +/// Safe delete: validates path starts with ~/.lcelauncher/versions/ before any delete. +/// Returns error.UnsafePath if validation fails. +/// MUST NEVER be called on saves/ or wineprefix/. +pub fn safeDelete(allocator: std.mem.Allocator, path: []const u8) !void { + const base = try getBaseDir(allocator); + + // Build the versions prefix + var versions_buf: [std.fs.max_path_bytes]u8 = undefined; + const versions_prefix = try std.fmt.bufPrint(&versions_buf, "{s}versions/", .{base}); + + // Must start with versions path + if (!std.mem.startsWith(u8, path, versions_prefix)) { + return SafeFsError.UnsafePath; + } + + // Must NEVER be the saves directory + var saves_buf: [std.fs.max_path_bytes]u8 = undefined; + const saves_prefix = try std.fmt.bufPrint(&saves_buf, "{s}saves", .{base}); + if (std.mem.startsWith(u8, path, saves_prefix)) { + return SafeFsError.UnsafePath; + } + + // Must NEVER be the wineprefix directory + var wine_buf: [std.fs.max_path_bytes]u8 = undefined; + const wine_prefix = try std.fmt.bufPrint(&wine_buf, "{s}wineprefix", .{base}); + if (std.mem.startsWith(u8, path, wine_prefix)) { + return SafeFsError.UnsafePath; + } + + // Perform the actual delete + var dir = std.fs.openDirAbsolute(path, .{ .iterate = true }) catch |err| switch (err) { + error.FileNotFound => return, + else => return err, + }; + dir.close(); + + try std.fs.deleteTreeAbsolute(path); +} + +/// Assert that saves_path is NOT inside versions_path +pub fn assertSavesNotInVersions(allocator: std.mem.Allocator, saves_path: []const u8) !void { + const versions = try getVersionsDir(allocator); + defer allocator.free(versions); + + if (std.mem.startsWith(u8, saves_path, versions)) { + return SafeFsError.SavesPathInsideVersionsDir; + } +} + +/// Ensure a directory exists, creating it recursively if needed. +pub fn ensureDir(path: []const u8) !void { + std.fs.makeDirAbsolute(path) catch |err| switch (err) { + error.PathAlreadyExists => {}, + else => { + // Try creating parent directories + if (std.fs.path.dirname(path)) |parent| { + try ensureDir(parent); + std.fs.makeDirAbsolute(path) catch |err2| switch (err2) { + error.PathAlreadyExists => {}, + else => return err2, + }; + } else { + return err; + } + }, + }; +} + +/// Ensure the base launcher directories exist +pub fn ensureBaseDirs(allocator: std.mem.Allocator) !void { + const base = try getBaseDir(allocator); + try ensureDir(base); + + const saves = try getSavesDir(allocator); + defer allocator.free(saves); + try ensureDir(saves); + + const versions = try getVersionsDir(allocator); + defer allocator.free(versions); + try ensureDir(versions); + + if (comptime builtin.os.tag == .linux) { + const wine = try getWinePrefixDir(allocator); + defer allocator.free(wine); + // Don't create wineprefix eagerly — created by wineboot --init + } +} diff --git a/src/ui.zig b/src/ui.zig new file mode 100644 index 0000000..0e85aaa --- /dev/null +++ b/src/ui.zig @@ -0,0 +1,1022 @@ +const std = @import("std"); +const builtin = @import("builtin"); +const c = @import("c_imports.zig").c; + +const config_mod = @import("config.zig"); +const game_updater = @import("game_updater.zig"); +const updater = @import("updater.zig"); +const launcher_mod = @import("launcher.zig"); + +/// Active sidebar tab +pub const Tab = enum(u8) { + play = 0, + versions = 1, + settings = 2, +}; + +/// Which input field is focused +pub const ActiveField = enum { + none, + username, + ip, + port, + saves_path, +}; + +/// UI mutable state +pub const UiState = struct { + active_tab: Tab = .play, + config: config_mod.Config = .{}, + game_version_display: [64]u8 = [_]u8{0} ** 64, + game_version_len: usize = 0, + active_field: ActiveField = .none, + + // Edit buffers for input fields (persist until Clay renders) + username_buf: [64]u8 = [_]u8{0} ** 64, + username_len: usize = 0, + ip_buf: [64]u8 = [_]u8{0} ** 64, + ip_len: usize = 0, + port_buf: [16]u8 = [_]u8{0} ** 16, + port_len: usize = 0, + saves_buf: [256]u8 = [_]u8{0} ** 256, + saves_len: usize = 0, + + /// Copy config values into edit buffers + pub fn syncFromConfig(self: *UiState) void { + const preset = self.config.presets[self.config.active_preset]; + + self.username_len = @min(preset.username.len, self.username_buf.len); + if (self.username_len > 0 and preset.username.ptr != self.username_buf[0..].ptr) { + @memcpy(self.username_buf[0..self.username_len], preset.username[0..self.username_len]); + } + + self.ip_len = @min(preset.ip.len, self.ip_buf.len); + if (self.ip_len > 0 and preset.ip.ptr != self.ip_buf[0..].ptr) { + @memcpy(self.ip_buf[0..self.ip_len], preset.ip[0..self.ip_len]); + } + + self.port_len = @min(preset.port.len, self.port_buf.len); + if (self.port_len > 0 and preset.port.ptr != self.port_buf[0..].ptr) { + @memcpy(self.port_buf[0..self.port_len], preset.port[0..self.port_len]); + } + + self.saves_len = @min(self.config.saves_path.len, self.saves_buf.len); + if (self.saves_len > 0 and self.config.saves_path.ptr != self.saves_buf[0..].ptr) { + @memcpy(self.saves_buf[0..self.saves_len], self.config.saves_path[0..self.saves_len]); + } + } +}; + +pub var ui_state = UiState{}; + +/// Handle a text input character from SDL +pub fn handleTextInput(text: []const u8) void { + switch (ui_state.active_field) { + .username => appendToBuffer(&ui_state.username_buf, &ui_state.username_len, text), + .ip => appendToBuffer(&ui_state.ip_buf, &ui_state.ip_len, text), + .port => appendToBuffer(&ui_state.port_buf, &ui_state.port_len, text), + .saves_path => appendToBuffer(&ui_state.saves_buf, &ui_state.saves_len, text), + .none => {}, + } +} + +/// Handle backspace key +pub fn handleBackspace() void { + switch (ui_state.active_field) { + .username => { + if (ui_state.username_len > 0) ui_state.username_len -= 1; + }, + .ip => { + if (ui_state.ip_len > 0) ui_state.ip_len -= 1; + }, + .port => { + if (ui_state.port_len > 0) ui_state.port_len -= 1; + }, + .saves_path => { + if (ui_state.saves_len > 0) ui_state.saves_len -= 1; + }, + .none => {}, + } +} + +/// Handle Enter/Return key — commit and unfocus +pub fn handleReturn() void { + commitActiveField(); + ui_state.active_field = .none; +} + +fn appendToBuffer(buf: anytype, len: *usize, text: []const u8) void { + for (text) |ch| { + if (len.* < buf.len) { + buf[len.*] = ch; + len.* += 1; + } + } +} + +/// Write edit buffer contents back to config +fn commitActiveField() void { + const p = ui_state.config.active_preset; + switch (ui_state.active_field) { + .username => ui_state.config.presets[p].username = ui_state.username_buf[0..ui_state.username_len], + .ip => ui_state.config.presets[p].ip = ui_state.ip_buf[0..ui_state.ip_len], + .port => ui_state.config.presets[p].port = ui_state.port_buf[0..ui_state.port_len], + .saves_path => ui_state.config.saves_path = ui_state.saves_buf[0..ui_state.saves_len], + .none => {}, + } +} + +// ── Color helpers ────────────────────────────────────────────────────── + +fn rgba(r: f32, g: f32, b: f32, a: f32) c.Clay_Color { + return .{ .r = r, .g = g, .b = b, .a = a }; +} + +// Color constants matching the Minecraft Launcher spec +const COLOR_HEADER_BG = rgba(0x11, 0x11, 0x11, 0xBB); +const COLOR_SIDEBAR_BG = rgba(0x2A, 0x2A, 0x2A, 0xAA); +const COLOR_PANEL_BG = rgba(0x1E, 0x1E, 0x1E, 0x99); +const COLOR_BOTTOM_BG = rgba(0x11, 0x11, 0x11, 0xBB); +const COLOR_WHITE = rgba(0xFF, 0xFF, 0xFF, 0xFF); +const COLOR_MUTED = rgba(0xAA, 0xAA, 0xAA, 0xFF); +const COLOR_GREEN = rgba(0x5A, 0x9E, 0x28, 0xFF); +const COLOR_TAB_ACTIVE = rgba(0x1E, 0x1E, 0x1E, 0xFF); +const COLOR_TRANSPARENT = rgba(0, 0, 0, 0); +const COLOR_BORDER = rgba(0x3A, 0x3A, 0x3A, 0xFF); +const COLOR_INPUT_BG = rgba(0x0A, 0x0A, 0x0A, 0xCC); +const COLOR_INPUT_BORDER = rgba(0x55, 0x55, 0x55, 0xFF); +const COLOR_CARD_BG = rgba(0x25, 0x25, 0x25, 0x88); +const COLOR_CARD_ACTIVE = rgba(0x35, 0x35, 0x35, 0xAA); +const COLOR_YELLOW = rgba(0xDA, 0xAA, 0x20, 0xFF); +const COLOR_BLUE = rgba(0x3A, 0x7A, 0xDA, 0xFF); +const COLOR_GRAY = rgba(0x66, 0x66, 0x66, 0xFF); +const COLOR_RED = rgba(0xDA, 0x3A, 0x3A, 0xFF); +const COLOR_PROGRESS_TRACK = rgba(0x1A, 0x1A, 0x1A, 0xFF); + +const FONT_ID: u16 = 0; + +// File-scope buffer for dynamic text that must persist until Clay renders +var dl_progress_buf: [96]u8 = undefined; +var dl_progress_len: usize = 0; + +// ── Helpers for Clay raw API ─────────────────────────────────────────── + +fn clayStr(s: []const u8) c.Clay_String { + return .{ .length = @intCast(s.len), .chars = s.ptr }; +} + +fn clayId(name: []const u8) c.Clay_ElementId { + return c.Clay__HashString(clayStr(name), 0); +} + +fn clayIdI(name: []const u8, index: u32) c.Clay_ElementId { + return c.Clay__HashStringWithOffset(clayStr(name), index, 0); +} + +fn openElement(name: []const u8) void { + c.Clay__OpenElementWithId(clayId(name)); +} + +fn openElementI(name: []const u8, index: u32) void { + c.Clay__OpenElementWithId(clayIdI(name, index)); +} + +fn closeElement() void { + c.Clay__CloseElement(); +} + +var text_id_counter: u32 = 0; + +fn textElement(s: []const u8, font_size: u16, color: c.Clay_Color) void { + text_id_counter +%= 1; + // We open a transparent block just to contain the text, with a unique ID based on pointer+counter + c.Clay__OpenElementWithId(c.Clay__HashStringWithOffset(clayStr(s), text_id_counter, 0)); + c.Clay__ConfigureOpenElement(.{ .layout = .{ .sizing = .{ .width = fixedW(0), .height = fixedH(0) } } }); + + c.Clay__OpenTextElement(clayStr(s), c.Clay__StoreTextElementConfig(.{ + .fontId = FONT_ID, + .fontSize = font_size, + .textColor = color, + })); + + c.Clay__CloseElement(); // Close textElement container +} + +fn growSize() c.Clay_Sizing { + return .{ + .width = .{ .size = .{ .minMax = .{ .min = 0, .max = 0 } }, .type = c.CLAY__SIZING_TYPE_GROW }, + .height = .{ .size = .{ .minMax = .{ .min = 0, .max = 0 } }, .type = c.CLAY__SIZING_TYPE_GROW }, + }; +} + +fn growWidth() c.Clay_SizingAxis { + return .{ .size = .{ .minMax = .{ .min = 0, .max = 0 } }, .type = c.CLAY__SIZING_TYPE_GROW }; +} + +fn growHeight() c.Clay_SizingAxis { + return .{ .size = .{ .minMax = .{ .min = 0, .max = 0 } }, .type = c.CLAY__SIZING_TYPE_GROW }; +} + +fn fixedW(w: f32) c.Clay_SizingAxis { + return .{ .size = .{ .minMax = .{ .min = w, .max = w } }, .type = c.CLAY__SIZING_TYPE_FIXED }; +} + +fn fixedH(h: f32) c.Clay_SizingAxis { + return .{ .size = .{ .minMax = .{ .min = h, .max = h } }, .type = c.CLAY__SIZING_TYPE_FIXED }; +} + +fn percentW(pct: f32) c.Clay_SizingAxis { + return .{ .size = .{ .percent = pct }, .type = c.CLAY__SIZING_TYPE_PERCENT }; +} + +fn uniformCorner(r: f32) c.Clay_CornerRadius { + return .{ .topLeft = r, .topRight = r, .bottomLeft = r, .bottomRight = r }; +} + +fn uniformBorder(width: u16) c.Clay_BorderWidth { + return .{ .left = width, .right = width, .top = width, .bottom = width, .betweenChildren = 0 }; +} + +fn pad4(l: u16, r: u16, t: u16, b: u16) c.Clay_Padding { + return .{ .left = l, .right = r, .top = t, .bottom = b }; +} + +// ── Layout Root ──────────────────────────────────────────────────────── + +pub fn layoutRoot() c.Clay_RenderCommandArray { + text_id_counter = 0; // Reset text ID counter every frame + c.Clay_BeginLayout(); + + // Root container + openElement("Root"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_TOP_TO_BOTTOM, + .sizing = growSize(), + }, + }); + + layoutHeader(); + layoutMiddle(); + layoutBottomBar(); + + closeElement(); // Root + + return c.Clay_EndLayout(); +} + +// ── Header Bar ───────────────────────────────────────────────────────── + +fn layoutHeader() void { + openElement("Header"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_LEFT_TO_RIGHT, + .sizing = .{ .width = growWidth(), .height = fixedH(36) }, + .padding = pad4(12, 12, 0, 0), + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + .childGap = 16, + }, + .backgroundColor = COLOR_HEADER_BG, + }); + + // Title + textElement("Flint", 16, COLOR_WHITE); + + // Spacer + openElement("HSp1"); + c.Clay__ConfigureOpenElement(.{ .layout = .{ .sizing = .{ .width = growWidth(), .height = fixedH(0) } } }); + closeElement(); + + // Game version + if (ui_state.game_version_len > 0) { + textElement(ui_state.game_version_display[0..ui_state.game_version_len], 10, COLOR_MUTED); + } else { + textElement("Not installed", 10, COLOR_MUTED); + } + + // Spacer + openElement("HSp2"); + c.Clay__ConfigureOpenElement(.{ .layout = .{ .sizing = .{ .width = growWidth(), .height = fixedH(0) } } }); + closeElement(); + + // Status pills + layoutPill("GPill", gameStatusText(), gameStatusColor()); + layoutPill("LPill", launcherStatusText(), launcherStatusColor()); + + closeElement(); // Header +} + +fn layoutPill(name: []const u8, text: []const u8, color: c.Clay_Color) void { + openElement(name); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .padding = pad4(8, 8, 4, 4), + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = color, + .cornerRadius = uniformCorner(4), + }); + textElement(text, 10, COLOR_WHITE); + closeElement(); +} + +fn gameStatusText() []const u8 { + return switch (game_updater.game_update_status) { + .up_to_date => "Game up to date", + .update_available => "Game update available", + .downloading => "Downloading...", + .checking => "Checking...", + .not_checked => "Not checked", + .err => "Offline", + }; +} + +fn gameStatusColor() c.Clay_Color { + return switch (game_updater.game_update_status) { + .up_to_date => COLOR_GREEN, + .update_available => COLOR_YELLOW, + .downloading => COLOR_BLUE, + .checking, .not_checked => COLOR_GRAY, + .err => COLOR_RED, + }; +} + +fn launcherStatusText() []const u8 { + return switch (updater.launcher_update_status) { + .up_to_date => "Launcher up to date", + .update_available => "Launcher update available", + .downloading => "Downloading...", + .checking => "Checking...", + .not_checked => "Not checked", + .err => "Offline", + }; +} + +fn launcherStatusColor() c.Clay_Color { + return switch (updater.launcher_update_status) { + .up_to_date => COLOR_GREEN, + .update_available => COLOR_YELLOW, + .downloading => COLOR_BLUE, + .checking, .not_checked => COLOR_GRAY, + .err => COLOR_RED, + }; +} + +// ── Middle Section ───────────────────────────────────────────────────── + +fn layoutMiddle() void { + openElement("Mid"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_LEFT_TO_RIGHT, + .sizing = growSize(), + }, + }); + + layoutSidebar(); + layoutContent(); + + closeElement(); // Mid +} + +// ── Sidebar ──────────────────────────────────────────────────────────── + +fn layoutSidebar() void { + openElement("Sidebar"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_TOP_TO_BOTTOM, + .sizing = .{ .width = fixedW(160), .height = growHeight() }, + }, + .backgroundColor = COLOR_SIDEBAR_BG, + }); + + layoutTab("PLAY", .play); + layoutTab("VERSIONS", .versions); + layoutTab("SETTINGS", .settings); + + closeElement(); // Sidebar +} + +fn layoutTab(label: []const u8, tab: Tab) void { + const is_active = ui_state.active_tab == tab; + + openElement(label); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .sizing = .{ .width = growWidth(), .height = fixedH(36) }, + .padding = pad4(16, 12, 0, 0), + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = if (is_active) COLOR_TAB_ACTIVE else COLOR_TRANSPARENT, + .border = if (is_active) .{ + .color = COLOR_GREEN, + .width = .{ .left = 3, .right = 0, .top = 0, .bottom = 0, .betweenChildren = 0 }, + } else std.mem.zeroes(c.Clay_BorderElementConfig), + }); + + textElement(label, 12, if (is_active) COLOR_WHITE else COLOR_MUTED); + + closeElement(); +} + +// ── Content Panel ────────────────────────────────────────────────────── + +fn layoutContent() void { + openElement("Content"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_TOP_TO_BOTTOM, + .sizing = growSize(), + .padding = pad4(16, 16, 16, 16), + .childGap = 12, + }, + .backgroundColor = COLOR_PANEL_BG, + }); + + switch (ui_state.active_tab) { + .play => layoutPlayTab(), + .versions => layoutVersionsTab(), + .settings => layoutSettingsTab(), + } + + closeElement(); // Content +} + +// ── Play Tab ─────────────────────────────────────────────────────────── + +fn layoutPlayTab() void { + textElement("Server Presets", 16, COLOR_WHITE); + + // Row 1 + openElement("PR1"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_LEFT_TO_RIGHT, + .sizing = .{ .width = growWidth(), .height = growHeight() }, + .childGap = 12, + }, + }); + layoutPresetCard(0); + layoutPresetCard(1); + closeElement(); + + // Row 2 + openElement("PR2"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_LEFT_TO_RIGHT, + .sizing = .{ .width = growWidth(), .height = growHeight() }, + .childGap = 12, + }, + }); + layoutPresetCard(2); + layoutPresetCard(3); + closeElement(); +} + +fn layoutPresetCard(index: u32) void { + const is_active = ui_state.config.active_preset == index; + const preset = ui_state.config.presets[index]; + + openElementI("Card", index); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_TOP_TO_BOTTOM, + .sizing = .{ .width = growWidth(), .height = growHeight() }, + .padding = pad4(12, 12, 12, 12), + .childGap = 6, + }, + .backgroundColor = if (is_active) COLOR_CARD_ACTIVE else COLOR_CARD_BG, + .cornerRadius = uniformCorner(4), + .border = .{ + .color = if (is_active) COLOR_GREEN else COLOR_BORDER, + .width = uniformBorder(if (is_active) 2 else 1), + }, + }); + + textElement(preset.name, 12, COLOR_WHITE); + if (preset.ip.len > 0) { + textElement(preset.ip, 10, COLOR_MUTED); + } else { + textElement("No server configured", 10, COLOR_MUTED); + } + + closeElement(); +} + +// ── Versions Tab ─────────────────────────────────────────────────────── + +fn layoutVersionsTab() void { + textElement("Installed Versions", 16, COLOR_WHITE); + + // Check for Updates button + openElement("ChkUpd"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .sizing = .{ .width = fixedW(180), .height = fixedH(36) }, + .childAlignment = .{ .x = c.CLAY_ALIGN_X_CENTER, .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = COLOR_GREEN, + .cornerRadius = uniformCorner(4), + }); + textElement("Check for Updates", 12, COLOR_WHITE); + closeElement(); + + // Update available banner + if (game_updater.game_update_status == .update_available) { + openElement("UpdBnr"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_LEFT_TO_RIGHT, + .sizing = .{ .width = growWidth(), .height = fixedH(44) }, + .padding = pad4(12, 12, 0, 0), + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + .childGap = 12, + }, + .backgroundColor = rgba(0x2A, 0x3A, 0x1A, 0xDD), + .cornerRadius = uniformCorner(6), + .border = .{ .color = COLOR_GREEN, .width = uniformBorder(1) }, + }); + + textElement("A new game version is available!", 12, COLOR_WHITE); + + // Spacer + openElement("UBSp"); + c.Clay__ConfigureOpenElement(.{ .layout = .{ .sizing = .{ .width = growWidth() } } }); + closeElement(); + + // Download button + openElement("DlBtn"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .sizing = .{ .width = fixedW(150), .height = fixedH(30) }, + .childAlignment = .{ .x = c.CLAY_ALIGN_X_CENTER, .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = COLOR_GREEN, + .cornerRadius = uniformCorner(4), + }); + textElement("Download Update", 11, COLOR_WHITE); + closeElement(); + + closeElement(); // UpdBnr + } + + // Download progress bar + if (game_updater.game_update_status == .downloading) { + const progress = game_updater.game_download_progress; + const fraction: f32 = if (progress.total_bytes > 0) + @as(f32, @floatFromInt(progress.bytes_received)) / @as(f32, @floatFromInt(progress.total_bytes)) + else blk: { + // Indeterminate: animate a subtle pulse + break :blk 0.0; + }; + + // Status text + if (progress.is_extracting) { + textElement("Extracting...", 11, COLOR_MUTED); + } else { + const mb_received = @as(f64, @floatFromInt(progress.bytes_received)) / (1024.0 * 1024.0); + if (progress.total_bytes > 0) { + const mb_total = @as(f64, @floatFromInt(progress.total_bytes)) / (1024.0 * 1024.0); + const pct = fraction * 100.0; + const result = std.fmt.bufPrint(&dl_progress_buf, "Downloading... {d:.1} / {d:.1} MB ({d:.0}%)", .{ mb_received, mb_total, pct }) catch "Downloading..."; + dl_progress_len = result.len; + } else { + const result = std.fmt.bufPrint(&dl_progress_buf, "Downloading... {d:.1} MB", .{mb_received}) catch "Downloading..."; + dl_progress_len = result.len; + } + textElement(dl_progress_buf[0..dl_progress_len], 11, COLOR_MUTED); + } + + // Track + openElement("PrgT"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ .sizing = .{ .width = growWidth(), .height = fixedH(22) } }, + .backgroundColor = COLOR_PROGRESS_TRACK, + .cornerRadius = uniformCorner(6), + }); + + // Fill + const fill_pct = if (fraction > 0.01) fraction else 0.01; + openElement("PrgF"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ .sizing = .{ .width = percentW(fill_pct), .height = growHeight() } }, + .backgroundColor = COLOR_GREEN, + .cornerRadius = uniformCorner(6), + }); + closeElement(); + + closeElement(); // PrgT + } + + // Done message + if (game_updater.game_download_progress.done) { + textElement("Update installed successfully!", 12, COLOR_GREEN); + } + + // Version list + openElement("VerL"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_TOP_TO_BOTTOM, + .sizing = growSize(), + .childGap = 4, + .padding = pad4(0, 0, 8, 8), + }, + .clip = .{ .vertical = true, .horizontal = false, .childOffset = c.Clay_GetScrollOffset() }, + }); + if (game_updater.installed_version_count == 0) { + textElement("No versions installed", 12, COLOR_MUTED); + } else { + for (0..game_updater.installed_version_count) |i| { + openElementI("Ver", @intCast(i)); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .sizing = .{ .width = growWidth(), .height = fixedH(28) }, + .padding = pad4(8, 8, 0, 0), + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = COLOR_CARD_BG, + .cornerRadius = uniformCorner(4), + }); + textElement(game_updater.getInstalledVersionName(i), 11, COLOR_WHITE); + closeElement(); + } + } + closeElement(); +} + +// ── Settings Tab ─────────────────────────────────────────────────────── + +fn layoutSettingsTab() void { + textElement("SAVES FOLDER", 10, COLOR_MUTED); + + // Saves path row + openElement("SvRow"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_LEFT_TO_RIGHT, + .sizing = .{ .width = growWidth() }, + .childGap = 8, + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + }, + }); + + const is_active = ui_state.active_field == .saves_path; + const border_color = if (is_active) COLOR_GREEN else COLOR_INPUT_BORDER; + + // Path display + openElement("Inp_SavesPath"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .sizing = .{ .width = growWidth(), .height = fixedH(32) }, + .padding = pad4(8, 8, 0, 0), + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = COLOR_INPUT_BG, + .border = .{ .color = border_color, .width = uniformBorder(1) }, + }); + + var text_to_render: []const u8 = ""; + if (is_active) { + text_to_render = ui_state.saves_buf[0..ui_state.saves_len]; + } else { + text_to_render = ui_state.config.saves_path; + } + + if (text_to_render.len > 0) { + textElement(text_to_render, 10, COLOR_WHITE); + } else if (is_active) { + textElement("_", 10, COLOR_WHITE); + } + closeElement(); + + // Change button + openElement("ChBtn"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .sizing = .{ .width = fixedW(80), .height = fixedH(32) }, + .childAlignment = .{ .x = c.CLAY_ALIGN_X_CENTER, .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = COLOR_GREEN, + .cornerRadius = uniformCorner(4), + }); + textElement("Change", 10, COLOR_WHITE); + closeElement(); + + closeElement(); // SvRow + + // Spacer + openElement("Sp1"); + c.Clay__ConfigureOpenElement(.{ .layout = .{ .sizing = .{ .height = fixedH(16) } } }); + closeElement(); + + // Wine section (Linux only) + if (comptime builtin.os.tag == .linux) { + textElement("WINE", 10, COLOR_MUTED); + + openElement("WineR"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_LEFT_TO_RIGHT, + .sizing = .{ .width = growWidth() }, + .childGap = 12, + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + }, + }); + + if (launcher_mod.wine_version) |wv| { + textElement(wv, 12, COLOR_WHITE); + } else { + textElement("Wine not found", 12, COLOR_RED); + } + + openElement("RstW"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .sizing = .{ .width = fixedW(140), .height = fixedH(32) }, + .childAlignment = .{ .x = c.CLAY_ALIGN_X_CENTER, .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = COLOR_GREEN, + .cornerRadius = uniformCorner(4), + }); + textElement("Reset Wine Prefix", 10, COLOR_WHITE); + closeElement(); + + closeElement(); // WineR + + openElement("Sp2"); + c.Clay__ConfigureOpenElement(.{ .layout = .{ .sizing = .{ .height = fixedH(16) } } }); + closeElement(); + } + + // Launcher section + textElement("LAUNCHER", 10, COLOR_MUTED); + + openElement("LaunchR"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_LEFT_TO_RIGHT, + .sizing = .{ .width = growWidth() }, + .childGap = 12, + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + }, + }); + + textElement(updater.getShortCommit(), 12, COLOR_WHITE); + + openElement("ChkLU"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .sizing = .{ .width = fixedW(180), .height = fixedH(32) }, + .childAlignment = .{ .x = c.CLAY_ALIGN_X_CENTER, .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = COLOR_GREEN, + .cornerRadius = uniformCorner(4), + }); + textElement("Check for Update", 10, COLOR_WHITE); + closeElement(); + + closeElement(); // LaunchR + + openElement("Sp3"); + c.Clay__ConfigureOpenElement(.{ .layout = .{ .sizing = .{ .height = fixedH(16) } } }); + closeElement(); + + textElement("GAME SOURCE", 10, COLOR_MUTED); + textElement("https://github.com/smartcmd/MinecraftConsoles/releases/tag/nightly", 10, COLOR_WHITE); +} + +// ── Bottom Bar ───────────────────────────────────────────────────────── + +fn layoutBottomBar() void { + openElement("BBar"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_LEFT_TO_RIGHT, + .sizing = .{ .width = growWidth(), .height = fixedH(80) }, + .padding = pad4(12, 12, 12, 12), + .childGap = 8, + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = COLOR_BOTTOM_BG, + .border = .{ .color = COLOR_BORDER, .width = .{ .left = 0, .right = 0, .top = 1, .bottom = 0, .betweenChildren = 0 } }, + }); + + // Folder button + openElement("FldBtn"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .sizing = .{ .width = fixedW(36), .height = fixedH(36) }, + .childAlignment = .{ .x = c.CLAY_ALIGN_X_CENTER, .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = COLOR_INPUT_BG, + .cornerRadius = uniformCorner(4), + .border = .{ .color = COLOR_INPUT_BORDER, .width = uniformBorder(1) }, + }); + textElement("F", 12, COLOR_WHITE); + closeElement(); + + // Input fields + layoutInputField("Username", 140, .username); + layoutInputField("IP", 140, .ip); + layoutInputField("Port", 80, .port); + + // Spacer + openElement("BSp1"); + c.Clay__ConfigureOpenElement(.{ .layout = .{ .sizing = .{ .width = growWidth() } } }); + closeElement(); + + // Preset switcher + openElement("PSw"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_LEFT_TO_RIGHT, + .childGap = 8, + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + }, + }); + textElement("<", 16, COLOR_MUTED); + textElement(ui_state.config.presets[ui_state.config.active_preset].name, 12, COLOR_WHITE); + textElement(">", 16, COLOR_MUTED); + closeElement(); + + // Spacer + openElement("BSp2"); + c.Clay__ConfigureOpenElement(.{ .layout = .{ .sizing = .{ .width = growWidth() } } }); + closeElement(); + + // LAUNCH button + const launch_bg = switch (launcher_mod.game_status) { + .not_running => COLOR_GREEN, + .running => COLOR_GRAY, + .initializing_wine => COLOR_YELLOW, + }; + const launch_text = switch (launcher_mod.game_status) { + .not_running => "LAUNCH", + .running => "RUNNING...", + .initializing_wine => "INITIALIZING WINE...", + }; + + openElement("Launch"); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .sizing = .{ .width = fixedW(160), .height = growHeight() }, + .childAlignment = .{ .x = c.CLAY_ALIGN_X_CENTER, .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = launch_bg, + .cornerRadius = uniformCorner(4), + }); + textElement(launch_text, 16, COLOR_WHITE); + closeElement(); + + closeElement(); // BBar +} + +fn layoutInputField(label: []const u8, width: f32, field: ActiveField) void { + openElement(label); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .layoutDirection = c.CLAY_TOP_TO_BOTTOM, + .sizing = .{ .width = fixedW(width) }, + .childGap = 2, + }, + }); + + textElement(label, 10, COLOR_MUTED); + + const is_active = ui_state.active_field == field; + const border_color = if (is_active) COLOR_GREEN else COLOR_INPUT_BORDER; + + var inp_id_buf: [64]u8 = undefined; + const inp_id = std.fmt.bufPrint(&inp_id_buf, "Inp_{s}", .{label}) catch "Inp_"; + + c.Clay__OpenElementWithId(clayId(inp_id)); + c.Clay__ConfigureOpenElement(.{ + .layout = .{ + .sizing = .{ .width = growWidth(), .height = fixedH(28) }, + .padding = pad4(6, 6, 0, 0), + .childAlignment = .{ .y = c.CLAY_ALIGN_Y_CENTER }, + }, + .backgroundColor = COLOR_INPUT_BG, + .border = .{ .color = border_color, .width = uniformBorder(1) }, + }); + + // Render text + var text_to_render: []const u8 = ""; + if (is_active) { + text_to_render = switch (field) { + .username => ui_state.username_buf[0..ui_state.username_len], + .ip => ui_state.ip_buf[0..ui_state.ip_len], + .port => ui_state.port_buf[0..ui_state.port_len], + .saves_path => ui_state.saves_buf[0..ui_state.saves_len], + .none => "", + }; + } else { + const p = ui_state.config.active_preset; + text_to_render = switch (field) { + .username => ui_state.config.presets[p].username, + .ip => ui_state.config.presets[p].ip, + .port => ui_state.config.presets[p].port, + .saves_path => ui_state.config.saves_path, + .none => "", + }; + } + + // Check if it's empty, possibly display a cursor if active + if (text_to_render.len > 0) { + textElement(text_to_render, 12, COLOR_WHITE); + } else if (is_active) { + textElement("_", 12, COLOR_WHITE); + } + + closeElement(); // Inp + + closeElement(); +} + +// ── Click Handling ───────────────────────────────────────────────────── + +pub fn handleClick() void { + // Check sidebar tab clicks + if (c.Clay_PointerOver(clayId("PLAY"))) { + ui_state.active_tab = .play; + } else if (c.Clay_PointerOver(clayId("VERSIONS"))) { + ui_state.active_tab = .versions; + } else if (c.Clay_PointerOver(clayId("SETTINGS"))) { + ui_state.active_tab = .settings; + } + + // Check preset card clicks + for (0..4) |i| { + if (c.Clay_PointerOver(clayIdI("Card", @intCast(i)))) { + ui_state.config.active_preset = @intCast(i); + } + } + + if (c.Clay_PointerOver(clayId("Launch"))) { + // commit any active field before launching + commitActiveField(); + ui_state.active_field = .none; + launcher_mod.launch(std.heap.page_allocator, ui_state.config) catch |err| { + std.debug.print("Failed to launch: {}\n", .{err}); + }; + } else if (c.Clay_PointerOver(clayId("ChkUpd"))) { + game_updater.checkForGameUpdate(std.heap.page_allocator) catch |err| { + std.debug.print("Failed to check game update: {}\n", .{err}); + }; + } else if (c.Clay_PointerOver(clayId("DlBtn"))) { + // Don't start another download if already downloading + if (game_updater.game_update_status != .downloading) { + const thread = std.Thread.spawn(.{}, struct { + fn run() void { + game_updater.downloadGame(std.heap.page_allocator) catch |err| { + std.debug.print("Failed to download game: {}\n", .{err}); + game_updater.game_update_status = .err; + }; + } + }.run, .{}) catch |err| { + std.debug.print("Failed to spawn download thread: {}\n", .{err}); + return; + }; + thread.detach(); + } + } else if (c.Clay_PointerOver(clayId("ChkLU"))) { + updater.checkForLauncherUpdate(std.heap.page_allocator) catch |err| { + std.debug.print("Failed to check launcher update: {}\n", .{err}); + }; + } else if (c.Clay_PointerOver(clayId("ChBtn"))) { + std.debug.print("TODO: Implement file picker for saves path\n", .{}); + } else if (c.Clay_PointerOver(clayId("Inp_Username"))) { + commitActiveField(); + ui_state.config.active_preset = ui_state.config.active_preset; // force save logic placeholder just in case + ui_state.active_field = .username; + ui_state.syncFromConfig(); + } else if (c.Clay_PointerOver(clayId("Inp_IP"))) { + commitActiveField(); + ui_state.active_field = .ip; + ui_state.syncFromConfig(); + } else if (c.Clay_PointerOver(clayId("Inp_Port"))) { + commitActiveField(); + ui_state.active_field = .port; + ui_state.syncFromConfig(); + } else if (c.Clay_PointerOver(clayId("Inp_SavesPath"))) { + commitActiveField(); + ui_state.active_field = .saves_path; + ui_state.syncFromConfig(); + } else { + // Clicked somewhere else, unfocus + commitActiveField(); + ui_state.active_field = .none; + } + + if (comptime builtin.os.tag == .linux) { + if (c.Clay_PointerOver(clayId("RstW"))) { + launcher_mod.resetWinePrefix(std.heap.page_allocator) catch |err| { + std.debug.print("Failed to reset wine prefix: {}\n", .{err}); + }; + } + } +} diff --git a/src/updater.zig b/src/updater.zig new file mode 100644 index 0000000..55475f2 --- /dev/null +++ b/src/updater.zig @@ -0,0 +1,287 @@ +const std = @import("std"); +const builtin = @import("builtin"); +const safe_fs = @import("safe_fs.zig"); + +/// Launcher self-update status +pub const LauncherUpdateStatus = enum { + not_checked, + checking, + up_to_date, + update_available, + downloading, + err, +}; + +pub var launcher_update_status: LauncherUpdateStatus = .not_checked; + +// Embedded at compile time from commit.txt written by build.zig +pub const current_commit = std.mem.trimRight(u8, @embedFile("commit.txt"), "\n\r "); + +const LAUNCHER_API_URL = "https://api.github.com/repos/YOUR_REPO/releases/tags/nightly"; + +/// Get the short commit SHA for display +pub fn getShortCommit() []const u8 { + if (current_commit.len >= 7) return current_commit[0..7]; + return current_commit; +} + +/// Check for launcher updates via GitHub nightly release +pub fn checkForLauncherUpdate(allocator: std.mem.Allocator) !void { + launcher_update_status = .checking; + + var bundle = std.crypto.Certificate.Bundle{}; + bundle.rescan(allocator) catch {}; + + var client = std.http.Client{ .allocator = allocator, .ca_bundle = bundle }; + defer client.deinit(); + + const uri = try std.Uri.parse(LAUNCHER_API_URL); + var req = client.request(.GET, uri, .{ + .extra_headers = &.{ + .{ .name = "User-Agent", .value = "Flint/1.0" }, + .{ .name = "Accept", .value = "application/vnd.github.v3+json" }, + .{ .name = "Accept-Encoding", .value = "identity" }, + }, + }) catch |err| { + std.debug.print("updater request err: {}\n", .{err}); + launcher_update_status = .err; + return; + }; + defer req.deinit(); + + req.sendBodiless() catch |err| { + std.debug.print("updater sendBodiless err: {}\n", .{err}); + launcher_update_status = .err; + return; + }; + + var server_header_buffer: [8192]u8 = undefined; + var response = req.receiveHead(&server_header_buffer) catch |err| { + std.debug.print("updater receiveHead err: {}\n", .{err}); + launcher_update_status = .err; + return; + }; + + if (response.head.status != .ok) { + std.debug.print("updater status not ok: {}\n", .{response.head.status}); + launcher_update_status = .err; + return; + } + + var reader = response.reader(&.{}); + const body = reader.allocRemaining(allocator, .unlimited) catch { + launcher_update_status = .err; + return; + }; + defer allocator.free(body); + + const parsed = std.json.parseFromSlice(std.json.Value, allocator, body, .{}) catch { + launcher_update_status = .err; + return; + }; + defer parsed.deinit(); + + const root = parsed.value; + if (root != .object) { + launcher_update_status = .err; + return; + } + + const commitish = root.object.get("target_commitish") orelse { + launcher_update_status = .err; + return; + }; + if (commitish != .string) { + launcher_update_status = .err; + return; + } + + if (std.mem.eql(u8, current_commit, commitish.string)) { + launcher_update_status = .up_to_date; + } else { + launcher_update_status = .update_available; + } +} + +/// Delete leftover launcher.old on startup +pub fn cleanupOldLauncher() void { + const self_path = std.fs.selfExePathAlloc(std.heap.page_allocator) catch return; + defer std.heap.page_allocator.free(self_path); + + const dir = std.fs.path.dirname(self_path) orelse return; + var buf: [std.fs.max_path_bytes]u8 = undefined; + const old_path = std.fmt.bufPrint(&buf, "{s}/launcher.old", .{dir}) catch return; + + // Retry delete up to 3 times with 100ms sleep + for (0..3) |_| { + std.fs.deleteFileAbsolute(old_path) catch |err| switch (err) { + error.FileNotFound => return, + else => { + std.Thread.sleep(100 * std.time.ns_per_ms); + continue; + }, + }; + return; + } +} + +/// Download and apply launcher update +pub fn downloadAndApplyUpdate(allocator: std.mem.Allocator) !void { + launcher_update_status = .downloading; + + // Find the right asset for current platform + var bundle = std.crypto.Certificate.Bundle{}; + bundle.rescan(allocator) catch {}; + + var client = std.http.Client{ .allocator = allocator, .ca_bundle = bundle }; + defer client.deinit(); + + const uri = try std.Uri.parse(LAUNCHER_API_URL); + var req = client.request(.GET, uri, .{ + .extra_headers = &.{ + .{ .name = "User-Agent", .value = "Flint/1.0" }, + .{ .name = "Accept", .value = "application/vnd.github.v3+json" }, + .{ .name = "Accept-Encoding", .value = "identity" }, + }, + }) catch { + launcher_update_status = .err; + return; + }; + defer req.deinit(); + + req.sendBodiless() catch { + launcher_update_status = .err; + return; + }; + + var server_header_buffer: [8192]u8 = undefined; + var response = req.receiveHead(&server_header_buffer) catch { + launcher_update_status = .err; + return; + }; + + if (response.head.status != .ok) { + launcher_update_status = .err; + return; + } + + var reader = response.reader(&.{}); + const body = reader.allocRemaining(allocator, .unlimited) catch { + launcher_update_status = .err; + return; + }; + defer allocator.free(body); + + const parsed = std.json.parseFromSlice(std.json.Value, allocator, body, .{}) catch { + launcher_update_status = .err; + return; + }; + defer parsed.deinit(); + + const root = parsed.value; + if (root != .object) { + launcher_update_status = .err; + return; + } + + const assets = root.object.get("assets") orelse { + launcher_update_status = .err; + return; + }; + if (assets != .array) { + launcher_update_status = .err; + return; + } + + // Find platform binary + const platform_str = if (comptime builtin.os.tag == .windows) "windows" else "linux"; + var download_url: ?[]const u8 = null; + + for (assets.array.items) |asset| { + if (asset != .object) continue; + const name = asset.object.get("name") orelse continue; + if (name != .string) continue; + + if (std.mem.indexOf(u8, name.string, platform_str) != null) { + const url = asset.object.get("browser_download_url") orelse continue; + if (url == .string) { + download_url = try allocator.dupe(u8, url.string); + break; + } + } + } + + const url = download_url orelse { + launcher_update_status = .err; + return; + }; + defer allocator.free(url); + + // Download to launcher.new + const self_path = try std.fs.selfExePathAlloc(allocator); + defer allocator.free(self_path); + const self_dir = std.fs.path.dirname(self_path) orelse return; + + var new_buf: [std.fs.max_path_bytes]u8 = undefined; + const new_path = try std.fmt.bufPrint(&new_buf, "{s}/launcher.new", .{self_dir}); + var old_buf: [std.fs.max_path_bytes]u8 = undefined; + const old_path = try std.fmt.bufPrint(&old_buf, "{s}/launcher.old", .{self_dir}); + + // Download + const dl_uri = try std.Uri.parse(url); + var dl_req = client.request(.GET, dl_uri, .{ + .extra_headers = &.{ + .{ .name = "User-Agent", .value = "Flint/1.0" }, + .{ .name = "Accept-Encoding", .value = "identity" }, + }, + }) catch { + launcher_update_status = .err; + return; + }; + defer dl_req.deinit(); + + dl_req.sendBodiless() catch { + launcher_update_status = .err; + return; + }; + + var dl_header_buf: [8192]u8 = undefined; + _ = dl_req.receiveHead(&dl_header_buf) catch { + launcher_update_status = .err; + return; + }; + + const out_file = try std.fs.createFileAbsolute(new_path, .{}); + defer out_file.close(); + + var dl_reader = dl_req.reader(&.{}); + var buf2: [8192]u8 = undefined; + while (true) { + const n = dl_reader.read(&buf2) catch break; + if (n == 0) break; + try out_file.writeAll(buf2[0..n]); + } + + // Make executable (Linux) + if (comptime builtin.os.tag == .linux) { + const new_file = try std.fs.openFileAbsolute(new_path, .{}); + defer new_file.close(); + try new_file.chmod(0o755); + } + + // Rename current -> old + std.fs.renameAbsolute(self_path, old_path) catch {}; + + // Rename new -> current + try std.fs.renameAbsolute(new_path, self_path); + + // Spawn new launcher + var child = std.process.Child.init( + &.{self_path}, + allocator, + ); + try child.spawn(); + + // Exit current process + std.process.exit(0); +} diff --git a/vendor/clay/clay.h b/vendor/clay/clay.h new file mode 100644 index 0000000..80d8393 --- /dev/null +++ b/vendor/clay/clay.h @@ -0,0 +1,4454 @@ +// VERSION: 0.14 + +/* + NOTE: In order to use this library you must define + the following macro in exactly one file, _before_ including clay.h: + + #define CLAY_IMPLEMENTATION + #include "clay.h" + + See the examples folder for details. +*/ + +#include +#include +#include + +// SIMD includes on supported platforms +#if !defined(CLAY_DISABLE_SIMD) && (defined(__x86_64__) || defined(_M_X64) || defined(_M_AMD64)) +#include +#elif !defined(CLAY_DISABLE_SIMD) && defined(__aarch64__) +#include +#endif + +// ----------------------------------------- +// HEADER DECLARATIONS --------------------- +// ----------------------------------------- + +#ifndef CLAY_HEADER +#define CLAY_HEADER + +#if !( \ + (defined(__cplusplus) && __cplusplus >= 202002L) || \ + (defined(__STDC__) && __STDC__ == 1 && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \ + defined(_MSC_VER) || \ + defined(__OBJC__) \ +) +#error "Clay requires C99, C++20, or MSVC" +#endif + +#ifdef CLAY_WASM +#define CLAY_WASM_EXPORT(name) __attribute__((export_name(name))) +#else +#define CLAY_WASM_EXPORT(null) +#endif + +#ifdef CLAY_DLL +#define CLAY_DLL_EXPORT __declspec(dllexport) __stdcall +#else +#define CLAY_DLL_EXPORT +#endif + +// Public Macro API ------------------------ + +#define CLAY__MAX(x, y) (((x) > (y)) ? (x) : (y)) +#define CLAY__MIN(x, y) (((x) < (y)) ? (x) : (y)) + +#define CLAY_TEXT_CONFIG(...) Clay__StoreTextElementConfig(CLAY__CONFIG_WRAPPER(Clay_TextElementConfig, __VA_ARGS__)) + +#define CLAY_BORDER_OUTSIDE(widthValue) {widthValue, widthValue, widthValue, widthValue, 0} + +#define CLAY_BORDER_ALL(widthValue) {widthValue, widthValue, widthValue, widthValue, widthValue} + +#define CLAY_CORNER_RADIUS(radius) (CLAY__INIT(Clay_CornerRadius) { radius, radius, radius, radius }) + +#define CLAY_PADDING_ALL(padding) CLAY__CONFIG_WRAPPER(Clay_Padding, { padding, padding, padding, padding }) + +#define CLAY_SIZING_FIT(...) (CLAY__INIT(Clay_SizingAxis) { .size = { .minMax = { __VA_ARGS__ } }, .type = CLAY__SIZING_TYPE_FIT }) + +#define CLAY_SIZING_GROW(...) (CLAY__INIT(Clay_SizingAxis) { .size = { .minMax = { __VA_ARGS__ } }, .type = CLAY__SIZING_TYPE_GROW }) + +#define CLAY_SIZING_FIXED(fixedSize) (CLAY__INIT(Clay_SizingAxis) { .size = { .minMax = { fixedSize, fixedSize } }, .type = CLAY__SIZING_TYPE_FIXED }) + +#define CLAY_SIZING_PERCENT(percentOfParent) (CLAY__INIT(Clay_SizingAxis) { .size = { .percent = (percentOfParent) }, .type = CLAY__SIZING_TYPE_PERCENT }) + +// Note: If a compile error led you here, you might be trying to use CLAY_ID with something other than a string literal. To construct an ID with a dynamic string, use CLAY_SID instead. +#define CLAY_ID(label) CLAY_SID(CLAY_STRING(label)) + +#define CLAY_SID(label) Clay__HashString(label, 0) + +// Note: If a compile error led you here, you might be trying to use CLAY_IDI with something other than a string literal. To construct an ID with a dynamic string, use CLAY_SIDI instead. +#define CLAY_IDI(label, index) CLAY_SIDI(CLAY_STRING(label), index) + +#define CLAY_SIDI(label, index) Clay__HashStringWithOffset(label, index, 0) + +// Note: If a compile error led you here, you might be trying to use CLAY_ID_LOCAL with something other than a string literal. To construct an ID with a dynamic string, use CLAY_SID_LOCAL instead. +#define CLAY_ID_LOCAL(label) CLAY_SID_LOCAL(CLAY_STRING(label)) + +#define CLAY_SID_LOCAL(label) Clay__HashString(label, Clay__GetParentElementId()) + +// Note: If a compile error led you here, you might be trying to use CLAY_IDI_LOCAL with something other than a string literal. To construct an ID with a dynamic string, use CLAY_SIDI_LOCAL instead. +#define CLAY_IDI_LOCAL(label, index) CLAY_SIDI_LOCAL(CLAY_STRING(label), index) + +#define CLAY_SIDI_LOCAL(label, index) Clay__HashStringWithOffset(label, index, Clay__GetParentElementId()) + +#define CLAY__STRING_LENGTH(s) ((sizeof(s) / sizeof((s)[0])) - sizeof((s)[0])) + +#define CLAY__ENSURE_STRING_LITERAL(x) ("" x "") + +// Note: If an error led you here, it's because CLAY_STRING can only be used with string literals, i.e. CLAY_STRING("SomeString") and not CLAY_STRING(yourString) +#define CLAY_STRING(string) (CLAY__INIT(Clay_String) { .isStaticallyAllocated = true, .length = CLAY__STRING_LENGTH(CLAY__ENSURE_STRING_LITERAL(string)), .chars = (string) }) + +#define CLAY_STRING_CONST(string) { .isStaticallyAllocated = true, .length = CLAY__STRING_LENGTH(CLAY__ENSURE_STRING_LITERAL(string)), .chars = (string) } + +static uint8_t CLAY__ELEMENT_DEFINITION_LATCH; + +// GCC marks the above CLAY__ELEMENT_DEFINITION_LATCH as an unused variable for files that include clay.h but don't declare any layout +// This is to suppress that warning +static inline void Clay__SuppressUnusedLatchDefinitionVariableWarning(void) { (void) CLAY__ELEMENT_DEFINITION_LATCH; } + +// Publicly visible layout element macros ----------------------------------------------------- + +/* This macro looks scary on the surface, but is actually quite simple. + It turns a macro call like this: + + CLAY({ + .id = CLAY_ID("Container"), + .backgroundColor = { 255, 200, 200, 255 } + }) { + ...children declared here + } + + Into calls like this: + + Clay__OpenElement(); + Clay__ConfigureOpenElement((Clay_ElementDeclaration) { + .id = CLAY_ID("Container"), + .backgroundColor = { 255, 200, 200, 255 } + }); + ...children declared here + Clay__CloseElement(); + + The for loop will only ever run a single iteration, putting Clay__CloseElement() in the increment of the loop + means that it will run after the body - where the children are declared. It just exists to make sure you don't forget + to call Clay_CloseElement(). +*/ +#define CLAY_AUTO_ID(...) \ + for ( \ + CLAY__ELEMENT_DEFINITION_LATCH = (Clay__OpenElement(), Clay__ConfigureOpenElement(CLAY__CONFIG_WRAPPER(Clay_ElementDeclaration, __VA_ARGS__)), 0); \ + CLAY__ELEMENT_DEFINITION_LATCH < 1; \ + CLAY__ELEMENT_DEFINITION_LATCH=1, Clay__CloseElement() \ + ) + +#define CLAY(id, ...) \ + for ( \ + CLAY__ELEMENT_DEFINITION_LATCH = (Clay__OpenElementWithId(id), Clay__ConfigureOpenElement(CLAY__CONFIG_WRAPPER(Clay_ElementDeclaration, __VA_ARGS__)), 0); \ + CLAY__ELEMENT_DEFINITION_LATCH < 1; \ + CLAY__ELEMENT_DEFINITION_LATCH=1, Clay__CloseElement() \ + ) + +// These macros exist to allow the CLAY() macro to be called both with an inline struct definition, such as +// CLAY({ .id = something... }); +// As well as by passing a predefined declaration struct +// Clay_ElementDeclaration declarationStruct = ... +// CLAY(declarationStruct); +#define CLAY__WRAPPER_TYPE(type) Clay__##type##Wrapper +#define CLAY__WRAPPER_STRUCT(type) typedef struct { type wrapped; } CLAY__WRAPPER_TYPE(type) +#define CLAY__CONFIG_WRAPPER(type, ...) (CLAY__INIT(CLAY__WRAPPER_TYPE(type)) { __VA_ARGS__ }).wrapped + +#define CLAY_TEXT(text, textConfig) Clay__OpenTextElement(text, textConfig) + +#ifdef __cplusplus + +#define CLAY__INIT(type) type + +#define CLAY_PACKED_ENUM enum : uint8_t + +#define CLAY__DEFAULT_STRUCT {} + +#else + +#define CLAY__INIT(type) (type) + +#if defined(_MSC_VER) && !defined(__clang__) +#define CLAY_PACKED_ENUM __pragma(pack(push, 1)) enum __pragma(pack(pop)) +#else +#define CLAY_PACKED_ENUM enum __attribute__((__packed__)) +#endif + +#if __STDC_VERSION__ >= 202311L +#define CLAY__DEFAULT_STRUCT {} +#else +#define CLAY__DEFAULT_STRUCT {0} +#endif + +#endif // __cplusplus + +#ifdef __cplusplus +extern "C" { +#endif + +// Utility Structs ------------------------- + +// Note: Clay_String is not guaranteed to be null terminated. It may be if created from a literal C string, +// but it is also used to represent slices. +typedef struct Clay_String { + // Set this boolean to true if the char* data underlying this string will live for the entire lifetime of the program. + // This will automatically be set for strings created with CLAY_STRING, as the macro requires a string literal. + bool isStaticallyAllocated; + int32_t length; + // The underlying character memory. Note: this will not be copied and will not extend the lifetime of the underlying memory. + const char *chars; +} Clay_String; + +// Clay_StringSlice is used to represent non owning string slices, and includes +// a baseChars field which points to the string this slice is derived from. +typedef struct Clay_StringSlice { + int32_t length; + const char *chars; + const char *baseChars; // The source string / char* that this slice was derived from +} Clay_StringSlice; + +typedef struct Clay_Context Clay_Context; + +// Clay_Arena is a memory arena structure that is used by clay to manage its internal allocations. +// Rather than creating it by hand, it's easier to use Clay_CreateArenaWithCapacityAndMemory() +typedef struct Clay_Arena { + uintptr_t nextAllocation; + size_t capacity; + char *memory; +} Clay_Arena; + +typedef struct Clay_Dimensions { + float width, height; +} Clay_Dimensions; + +typedef struct Clay_Vector2 { + float x, y; +} Clay_Vector2; + +// Internally clay conventionally represents colors as 0-255, but interpretation is up to the renderer. +typedef struct Clay_Color { + float r, g, b, a; +} Clay_Color; + +typedef struct Clay_BoundingBox { + float x, y, width, height; +} Clay_BoundingBox; + +// Primarily created via the CLAY_ID(), CLAY_IDI(), CLAY_ID_LOCAL() and CLAY_IDI_LOCAL() macros. +// Represents a hashed string ID used for identifying and finding specific clay UI elements, required +// by functions such as Clay_PointerOver() and Clay_GetElementData(). +typedef struct Clay_ElementId { + uint32_t id; // The resulting hash generated from the other fields. + uint32_t offset; // A numerical offset applied after computing the hash from stringId. + uint32_t baseId; // A base hash value to start from, for example the parent element ID is used when calculating CLAY_ID_LOCAL(). + Clay_String stringId; // The string id to hash. +} Clay_ElementId; + +// A sized array of Clay_ElementId. +typedef struct +{ + int32_t capacity; + int32_t length; + Clay_ElementId *internalArray; +} Clay_ElementIdArray; + +// Controls the "radius", or corner rounding of elements, including rectangles, borders and images. +// The rounding is determined by drawing a circle inset into the element corner by (radius, radius) pixels. +typedef struct Clay_CornerRadius { + float topLeft; + float topRight; + float bottomLeft; + float bottomRight; +} Clay_CornerRadius; + +// Element Configs --------------------------- + +// Controls the direction in which child elements will be automatically laid out. +typedef CLAY_PACKED_ENUM { + // (Default) Lays out child elements from left to right with increasing x. + CLAY_LEFT_TO_RIGHT, + // Lays out child elements from top to bottom with increasing y. + CLAY_TOP_TO_BOTTOM, +} Clay_LayoutDirection; + +// Controls the alignment along the x axis (horizontal) of child elements. +typedef CLAY_PACKED_ENUM { + // (Default) Aligns child elements to the left hand side of this element, offset by padding.width.left + CLAY_ALIGN_X_LEFT, + // Aligns child elements to the right hand side of this element, offset by padding.width.right + CLAY_ALIGN_X_RIGHT, + // Aligns child elements horizontally to the center of this element + CLAY_ALIGN_X_CENTER, +} Clay_LayoutAlignmentX; + +// Controls the alignment along the y axis (vertical) of child elements. +typedef CLAY_PACKED_ENUM { + // (Default) Aligns child elements to the top of this element, offset by padding.width.top + CLAY_ALIGN_Y_TOP, + // Aligns child elements to the bottom of this element, offset by padding.width.bottom + CLAY_ALIGN_Y_BOTTOM, + // Aligns child elements vertically to the center of this element + CLAY_ALIGN_Y_CENTER, +} Clay_LayoutAlignmentY; + +// Controls how the element takes up space inside its parent container. +typedef CLAY_PACKED_ENUM { + // (default) Wraps tightly to the size of the element's contents. + CLAY__SIZING_TYPE_FIT, + // Expands along this axis to fill available space in the parent element, sharing it with other GROW elements. + CLAY__SIZING_TYPE_GROW, + // Expects 0-1 range. Clamps the axis size to a percent of the parent container's axis size minus padding and child gaps. + CLAY__SIZING_TYPE_PERCENT, + // Clamps the axis size to an exact size in pixels. + CLAY__SIZING_TYPE_FIXED, +} Clay__SizingType; + +// Controls how child elements are aligned on each axis. +typedef struct Clay_ChildAlignment { + Clay_LayoutAlignmentX x; // Controls alignment of children along the x axis. + Clay_LayoutAlignmentY y; // Controls alignment of children along the y axis. +} Clay_ChildAlignment; + +// Controls the minimum and maximum size in pixels that this element is allowed to grow or shrink to, +// overriding sizing types such as FIT or GROW. +typedef struct Clay_SizingMinMax { + float min; // The smallest final size of the element on this axis will be this value in pixels. + float max; // The largest final size of the element on this axis will be this value in pixels. +} Clay_SizingMinMax; + +// Controls the sizing of this element along one axis inside its parent container. +typedef struct Clay_SizingAxis { + union { + Clay_SizingMinMax minMax; // Controls the minimum and maximum size in pixels that this element is allowed to grow or shrink to, overriding sizing types such as FIT or GROW. + float percent; // Expects 0-1 range. Clamps the axis size to a percent of the parent container's axis size minus padding and child gaps. + } size; + Clay__SizingType type; // Controls how the element takes up space inside its parent container. +} Clay_SizingAxis; + +// Controls the sizing of this element along one axis inside its parent container. +typedef struct Clay_Sizing { + Clay_SizingAxis width; // Controls the width sizing of the element, along the x axis. + Clay_SizingAxis height; // Controls the height sizing of the element, along the y axis. +} Clay_Sizing; + +// Controls "padding" in pixels, which is a gap between the bounding box of this element and where its children +// will be placed. +typedef struct Clay_Padding { + uint16_t left; + uint16_t right; + uint16_t top; + uint16_t bottom; +} Clay_Padding; + +CLAY__WRAPPER_STRUCT(Clay_Padding); + +// Controls various settings that affect the size and position of an element, as well as the sizes and positions +// of any child elements. +typedef struct Clay_LayoutConfig { + Clay_Sizing sizing; // Controls the sizing of this element inside it's parent container, including FIT, GROW, PERCENT and FIXED sizing. + Clay_Padding padding; // Controls "padding" in pixels, which is a gap between the bounding box of this element and where its children will be placed. + uint16_t childGap; // Controls the gap in pixels between child elements along the layout axis (horizontal gap for LEFT_TO_RIGHT, vertical gap for TOP_TO_BOTTOM). + Clay_ChildAlignment childAlignment; // Controls how child elements are aligned on each axis. + Clay_LayoutDirection layoutDirection; // Controls the direction in which child elements will be automatically laid out. +} Clay_LayoutConfig; + +CLAY__WRAPPER_STRUCT(Clay_LayoutConfig); + +extern Clay_LayoutConfig CLAY_LAYOUT_DEFAULT; + +// Controls how text "wraps", that is how it is broken into multiple lines when there is insufficient horizontal space. +typedef CLAY_PACKED_ENUM { + // (default) breaks on whitespace characters. + CLAY_TEXT_WRAP_WORDS, + // Don't break on space characters, only on newlines. + CLAY_TEXT_WRAP_NEWLINES, + // Disable text wrapping entirely. + CLAY_TEXT_WRAP_NONE, +} Clay_TextElementConfigWrapMode; + +// Controls how wrapped lines of text are horizontally aligned within the outer text bounding box. +typedef CLAY_PACKED_ENUM { + // (default) Horizontally aligns wrapped lines of text to the left hand side of their bounding box. + CLAY_TEXT_ALIGN_LEFT, + // Horizontally aligns wrapped lines of text to the center of their bounding box. + CLAY_TEXT_ALIGN_CENTER, + // Horizontally aligns wrapped lines of text to the right hand side of their bounding box. + CLAY_TEXT_ALIGN_RIGHT, +} Clay_TextAlignment; + +// Controls various functionality related to text elements. +typedef struct Clay_TextElementConfig { + // A pointer that will be transparently passed through to the resulting render command. + void *userData; + // The RGBA color of the font to render, conventionally specified as 0-255. + Clay_Color textColor; + // An integer transparently passed to Clay_MeasureText to identify the font to use. + // The debug view will pass fontId = 0 for its internal text. + uint16_t fontId; + // Controls the size of the font. Handled by the function provided to Clay_MeasureText. + uint16_t fontSize; + // Controls extra horizontal spacing between characters. Handled by the function provided to Clay_MeasureText. + uint16_t letterSpacing; + // Controls additional vertical space between wrapped lines of text. + uint16_t lineHeight; + // Controls how text "wraps", that is how it is broken into multiple lines when there is insufficient horizontal space. + // CLAY_TEXT_WRAP_WORDS (default) breaks on whitespace characters. + // CLAY_TEXT_WRAP_NEWLINES doesn't break on space characters, only on newlines. + // CLAY_TEXT_WRAP_NONE disables wrapping entirely. + Clay_TextElementConfigWrapMode wrapMode; + // Controls how wrapped lines of text are horizontally aligned within the outer text bounding box. + // CLAY_TEXT_ALIGN_LEFT (default) - Horizontally aligns wrapped lines of text to the left hand side of their bounding box. + // CLAY_TEXT_ALIGN_CENTER - Horizontally aligns wrapped lines of text to the center of their bounding box. + // CLAY_TEXT_ALIGN_RIGHT - Horizontally aligns wrapped lines of text to the right hand side of their bounding box. + Clay_TextAlignment textAlignment; +} Clay_TextElementConfig; + +CLAY__WRAPPER_STRUCT(Clay_TextElementConfig); + +// Aspect Ratio -------------------------------- + +// Controls various settings related to aspect ratio scaling element. +typedef struct Clay_AspectRatioElementConfig { + float aspectRatio; // A float representing the target "Aspect ratio" for an element, which is its final width divided by its final height. +} Clay_AspectRatioElementConfig; + +CLAY__WRAPPER_STRUCT(Clay_AspectRatioElementConfig); + +// Image -------------------------------- + +// Controls various settings related to image elements. +typedef struct Clay_ImageElementConfig { + void* imageData; // A transparent pointer used to pass image data through to the renderer. +} Clay_ImageElementConfig; + +CLAY__WRAPPER_STRUCT(Clay_ImageElementConfig); + +// Floating ----------------------------- + +// Controls where a floating element is offset relative to its parent element. +// Note: see https://github.com/user-attachments/assets/b8c6dfaa-c1b1-41a4-be55-013473e4a6ce for a visual explanation. +typedef CLAY_PACKED_ENUM { + CLAY_ATTACH_POINT_LEFT_TOP, + CLAY_ATTACH_POINT_LEFT_CENTER, + CLAY_ATTACH_POINT_LEFT_BOTTOM, + CLAY_ATTACH_POINT_CENTER_TOP, + CLAY_ATTACH_POINT_CENTER_CENTER, + CLAY_ATTACH_POINT_CENTER_BOTTOM, + CLAY_ATTACH_POINT_RIGHT_TOP, + CLAY_ATTACH_POINT_RIGHT_CENTER, + CLAY_ATTACH_POINT_RIGHT_BOTTOM, +} Clay_FloatingAttachPointType; + +// Controls where a floating element is offset relative to its parent element. +typedef struct Clay_FloatingAttachPoints { + Clay_FloatingAttachPointType element; // Controls the origin point on a floating element that attaches to its parent. + Clay_FloatingAttachPointType parent; // Controls the origin point on the parent element that the floating element attaches to. +} Clay_FloatingAttachPoints; + +// Controls how mouse pointer events like hover and click are captured or passed through to elements underneath a floating element. +typedef CLAY_PACKED_ENUM { + // (default) "Capture" the pointer event and don't allow events like hover and click to pass through to elements underneath. + CLAY_POINTER_CAPTURE_MODE_CAPTURE, + // CLAY_POINTER_CAPTURE_MODE_PARENT, TODO pass pointer through to attached parent + + // Transparently pass through pointer events like hover and click to elements underneath the floating element. + CLAY_POINTER_CAPTURE_MODE_PASSTHROUGH, +} Clay_PointerCaptureMode; + +// Controls which element a floating element is "attached" to (i.e. relative offset from). +typedef CLAY_PACKED_ENUM { + // (default) Disables floating for this element. + CLAY_ATTACH_TO_NONE, + // Attaches this floating element to its parent, positioned based on the .attachPoints and .offset fields. + CLAY_ATTACH_TO_PARENT, + // Attaches this floating element to an element with a specific ID, specified with the .parentId field. positioned based on the .attachPoints and .offset fields. + CLAY_ATTACH_TO_ELEMENT_WITH_ID, + // Attaches this floating element to the root of the layout, which combined with the .offset field provides functionality similar to "absolute positioning". + CLAY_ATTACH_TO_ROOT, +} Clay_FloatingAttachToElement; + +// Controls whether or not a floating element is clipped to the same clipping rectangle as the element it's attached to. +typedef CLAY_PACKED_ENUM { + // (default) - The floating element does not inherit clipping. + CLAY_CLIP_TO_NONE, + // The floating element is clipped to the same clipping rectangle as the element it's attached to. + CLAY_CLIP_TO_ATTACHED_PARENT +} Clay_FloatingClipToElement; + +// Controls various settings related to "floating" elements, which are elements that "float" above other elements, potentially overlapping their boundaries, +// and not affecting the layout of sibling or parent elements. +typedef struct Clay_FloatingElementConfig { + // Offsets this floating element by the provided x,y coordinates from its attachPoints. + Clay_Vector2 offset; + // Expands the boundaries of the outer floating element without affecting its children. + Clay_Dimensions expand; + // When used in conjunction with .attachTo = CLAY_ATTACH_TO_ELEMENT_WITH_ID, attaches this floating element to the element in the hierarchy with the provided ID. + // Hint: attach the ID to the other element with .id = CLAY_ID("yourId"), and specify the id the same way, with .parentId = CLAY_ID("yourId").id + uint32_t parentId; + // Controls the z index of this floating element and all its children. Floating elements are sorted in ascending z order before output. + // zIndex is also passed to the renderer for all elements contained within this floating element. + int16_t zIndex; + // Controls how mouse pointer events like hover and click are captured or passed through to elements underneath / behind a floating element. + // Enum is of the form CLAY_ATTACH_POINT_foo_bar. See Clay_FloatingAttachPoints for more details. + // Note: see for a visual explanation. + Clay_FloatingAttachPoints attachPoints; + // Controls how mouse pointer events like hover and click are captured or passed through to elements underneath a floating element. + // CLAY_POINTER_CAPTURE_MODE_CAPTURE (default) - "Capture" the pointer event and don't allow events like hover and click to pass through to elements underneath. + // CLAY_POINTER_CAPTURE_MODE_PASSTHROUGH - Transparently pass through pointer events like hover and click to elements underneath the floating element. + Clay_PointerCaptureMode pointerCaptureMode; + // Controls which element a floating element is "attached" to (i.e. relative offset from). + // CLAY_ATTACH_TO_NONE (default) - Disables floating for this element. + // CLAY_ATTACH_TO_PARENT - Attaches this floating element to its parent, positioned based on the .attachPoints and .offset fields. + // CLAY_ATTACH_TO_ELEMENT_WITH_ID - Attaches this floating element to an element with a specific ID, specified with the .parentId field. positioned based on the .attachPoints and .offset fields. + // CLAY_ATTACH_TO_ROOT - Attaches this floating element to the root of the layout, which combined with the .offset field provides functionality similar to "absolute positioning". + Clay_FloatingAttachToElement attachTo; + // Controls whether or not a floating element is clipped to the same clipping rectangle as the element it's attached to. + // CLAY_CLIP_TO_NONE (default) - The floating element does not inherit clipping. + // CLAY_CLIP_TO_ATTACHED_PARENT - The floating element is clipped to the same clipping rectangle as the element it's attached to. + Clay_FloatingClipToElement clipTo; +} Clay_FloatingElementConfig; + +CLAY__WRAPPER_STRUCT(Clay_FloatingElementConfig); + +// Custom ----------------------------- + +// Controls various settings related to custom elements. +typedef struct Clay_CustomElementConfig { + // A transparent pointer through which you can pass custom data to the renderer. + // Generates CUSTOM render commands. + void* customData; +} Clay_CustomElementConfig; + +CLAY__WRAPPER_STRUCT(Clay_CustomElementConfig); + +// Scroll ----------------------------- + +// Controls the axis on which an element switches to "scrolling", which clips the contents and allows scrolling in that direction. +typedef struct Clay_ClipElementConfig { + bool horizontal; // Clip overflowing elements on the X axis. + bool vertical; // Clip overflowing elements on the Y axis. + Clay_Vector2 childOffset; // Offsets the x,y positions of all child elements. Used primarily for scrolling containers. +} Clay_ClipElementConfig; + +CLAY__WRAPPER_STRUCT(Clay_ClipElementConfig); + +// Border ----------------------------- + +// Controls the widths of individual element borders. +typedef struct Clay_BorderWidth { + uint16_t left; + uint16_t right; + uint16_t top; + uint16_t bottom; + // Creates borders between each child element, depending on the .layoutDirection. + // e.g. for LEFT_TO_RIGHT, borders will be vertical lines, and for TOP_TO_BOTTOM borders will be horizontal lines. + // .betweenChildren borders will result in individual RECTANGLE render commands being generated. + uint16_t betweenChildren; +} Clay_BorderWidth; + +// Controls settings related to element borders. +typedef struct Clay_BorderElementConfig { + Clay_Color color; // Controls the color of all borders with width > 0. Conventionally represented as 0-255, but interpretation is up to the renderer. + Clay_BorderWidth width; // Controls the widths of individual borders. At least one of these should be > 0 for a BORDER render command to be generated. +} Clay_BorderElementConfig; + +CLAY__WRAPPER_STRUCT(Clay_BorderElementConfig); + +// Render Command Data ----------------------------- + +// Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_TEXT +typedef struct Clay_TextRenderData { + // A string slice containing the text to be rendered. + // Note: this is not guaranteed to be null terminated. + Clay_StringSlice stringContents; + // Conventionally represented as 0-255 for each channel, but interpretation is up to the renderer. + Clay_Color textColor; + // An integer representing the font to use to render this text, transparently passed through from the text declaration. + uint16_t fontId; + uint16_t fontSize; + // Specifies the extra whitespace gap in pixels between each character. + uint16_t letterSpacing; + // The height of the bounding box for this line of text. + uint16_t lineHeight; +} Clay_TextRenderData; + +// Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_RECTANGLE +typedef struct Clay_RectangleRenderData { + // The solid background color to fill this rectangle with. Conventionally represented as 0-255 for each channel, but interpretation is up to the renderer. + Clay_Color backgroundColor; + // Controls the "radius", or corner rounding of elements, including rectangles, borders and images. + // The rounding is determined by drawing a circle inset into the element corner by (radius, radius) pixels. + Clay_CornerRadius cornerRadius; +} Clay_RectangleRenderData; + +// Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_IMAGE +typedef struct Clay_ImageRenderData { + // The tint color for this image. Note that the default value is 0,0,0,0 and should likely be interpreted + // as "untinted". + // Conventionally represented as 0-255 for each channel, but interpretation is up to the renderer. + Clay_Color backgroundColor; + // Controls the "radius", or corner rounding of this image. + // The rounding is determined by drawing a circle inset into the element corner by (radius, radius) pixels. + Clay_CornerRadius cornerRadius; + // A pointer transparently passed through from the original element definition, typically used to represent image data. + void* imageData; +} Clay_ImageRenderData; + +// Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_CUSTOM +typedef struct Clay_CustomRenderData { + // Passed through from .backgroundColor in the original element declaration. + // Conventionally represented as 0-255 for each channel, but interpretation is up to the renderer. + Clay_Color backgroundColor; + // Controls the "radius", or corner rounding of this custom element. + // The rounding is determined by drawing a circle inset into the element corner by (radius, radius) pixels. + Clay_CornerRadius cornerRadius; + // A pointer transparently passed through from the original element definition. + void* customData; +} Clay_CustomRenderData; + +// Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_SCISSOR_START || commandType == CLAY_RENDER_COMMAND_TYPE_SCISSOR_END +typedef struct Clay_ScrollRenderData { + bool horizontal; + bool vertical; +} Clay_ClipRenderData; + +// Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_BORDER +typedef struct Clay_BorderRenderData { + // Controls a shared color for all this element's borders. + // Conventionally represented as 0-255 for each channel, but interpretation is up to the renderer. + Clay_Color color; + // Specifies the "radius", or corner rounding of this border element. + // The rounding is determined by drawing a circle inset into the element corner by (radius, radius) pixels. + Clay_CornerRadius cornerRadius; + // Controls individual border side widths. + Clay_BorderWidth width; +} Clay_BorderRenderData; + +// A struct union containing data specific to this command's .commandType +typedef union Clay_RenderData { + // Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_RECTANGLE + Clay_RectangleRenderData rectangle; + // Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_TEXT + Clay_TextRenderData text; + // Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_IMAGE + Clay_ImageRenderData image; + // Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_CUSTOM + Clay_CustomRenderData custom; + // Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_BORDER + Clay_BorderRenderData border; + // Render command data when commandType == CLAY_RENDER_COMMAND_TYPE_SCISSOR_START|END + Clay_ClipRenderData clip; +} Clay_RenderData; + +// Miscellaneous Structs & Enums --------------------------------- + +// Data representing the current internal state of a scrolling element. +typedef struct Clay_ScrollContainerData { + // Note: This is a pointer to the real internal scroll position, mutating it may cause a change in final layout. + // Intended for use with external functionality that modifies scroll position, such as scroll bars or auto scrolling. + Clay_Vector2 *scrollPosition; + // The bounding box of the scroll element. + Clay_Dimensions scrollContainerDimensions; + // The outer dimensions of the inner scroll container content, including the padding of the parent scroll container. + Clay_Dimensions contentDimensions; + // The config that was originally passed to the clip element. + Clay_ClipElementConfig config; + // Indicates whether an actual scroll container matched the provided ID or if the default struct was returned. + bool found; +} Clay_ScrollContainerData; + +// Bounding box and other data for a specific UI element. +typedef struct Clay_ElementData { + // The rectangle that encloses this UI element, with the position relative to the root of the layout. + Clay_BoundingBox boundingBox; + // Indicates whether an actual Element matched the provided ID or if the default struct was returned. + bool found; +} Clay_ElementData; + +// Used by renderers to determine specific handling for each render command. +typedef CLAY_PACKED_ENUM { + // This command type should be skipped. + CLAY_RENDER_COMMAND_TYPE_NONE, + // The renderer should draw a solid color rectangle. + CLAY_RENDER_COMMAND_TYPE_RECTANGLE, + // The renderer should draw a colored border inset into the bounding box. + CLAY_RENDER_COMMAND_TYPE_BORDER, + // The renderer should draw text. + CLAY_RENDER_COMMAND_TYPE_TEXT, + // The renderer should draw an image. + CLAY_RENDER_COMMAND_TYPE_IMAGE, + // The renderer should begin clipping all future draw commands, only rendering content that falls within the provided boundingBox. + CLAY_RENDER_COMMAND_TYPE_SCISSOR_START, + // The renderer should finish any previously active clipping, and begin rendering elements in full again. + CLAY_RENDER_COMMAND_TYPE_SCISSOR_END, + // The renderer should provide a custom implementation for handling this render command based on its .customData + CLAY_RENDER_COMMAND_TYPE_CUSTOM, +} Clay_RenderCommandType; + +typedef struct Clay_RenderCommand { + // A rectangular box that fully encloses this UI element, with the position relative to the root of the layout. + Clay_BoundingBox boundingBox; + // A struct union containing data specific to this command's commandType. + Clay_RenderData renderData; + // A pointer transparently passed through from the original element declaration. + void *userData; + // The id of this element, transparently passed through from the original element declaration. + uint32_t id; + // The z order required for drawing this command correctly. + // Note: the render command array is already sorted in ascending order, and will produce correct results if drawn in naive order. + // This field is intended for use in batching renderers for improved performance. + int16_t zIndex; + // Specifies how to handle rendering of this command. + // CLAY_RENDER_COMMAND_TYPE_RECTANGLE - The renderer should draw a solid color rectangle. + // CLAY_RENDER_COMMAND_TYPE_BORDER - The renderer should draw a colored border inset into the bounding box. + // CLAY_RENDER_COMMAND_TYPE_TEXT - The renderer should draw text. + // CLAY_RENDER_COMMAND_TYPE_IMAGE - The renderer should draw an image. + // CLAY_RENDER_COMMAND_TYPE_SCISSOR_START - The renderer should begin clipping all future draw commands, only rendering content that falls within the provided boundingBox. + // CLAY_RENDER_COMMAND_TYPE_SCISSOR_END - The renderer should finish any previously active clipping, and begin rendering elements in full again. + // CLAY_RENDER_COMMAND_TYPE_CUSTOM - The renderer should provide a custom implementation for handling this render command based on its .customData + Clay_RenderCommandType commandType; +} Clay_RenderCommand; + +// A sized array of render commands. +typedef struct Clay_RenderCommandArray { + // The underlying max capacity of the array, not necessarily all initialized. + int32_t capacity; + // The number of initialized elements in this array. Used for loops and iteration. + int32_t length; + // A pointer to the first element in the internal array. + Clay_RenderCommand* internalArray; +} Clay_RenderCommandArray; + +// Represents the current state of interaction with clay this frame. +typedef CLAY_PACKED_ENUM { + // A left mouse click, or touch occurred this frame. + CLAY_POINTER_DATA_PRESSED_THIS_FRAME, + // The left mouse button click or touch happened at some point in the past, and is still currently held down this frame. + CLAY_POINTER_DATA_PRESSED, + // The left mouse button click or touch was released this frame. + CLAY_POINTER_DATA_RELEASED_THIS_FRAME, + // The left mouse button click or touch is not currently down / was released at some point in the past. + CLAY_POINTER_DATA_RELEASED, +} Clay_PointerDataInteractionState; + +// Information on the current state of pointer interactions this frame. +typedef struct Clay_PointerData { + // The position of the mouse / touch / pointer relative to the root of the layout. + Clay_Vector2 position; + // Represents the current state of interaction with clay this frame. + // CLAY_POINTER_DATA_PRESSED_THIS_FRAME - A left mouse click, or touch occurred this frame. + // CLAY_POINTER_DATA_PRESSED - The left mouse button click or touch happened at some point in the past, and is still currently held down this frame. + // CLAY_POINTER_DATA_RELEASED_THIS_FRAME - The left mouse button click or touch was released this frame. + // CLAY_POINTER_DATA_RELEASED - The left mouse button click or touch is not currently down / was released at some point in the past. + Clay_PointerDataInteractionState state; +} Clay_PointerData; + +typedef struct Clay_ElementDeclaration { + // Controls various settings that affect the size and position of an element, as well as the sizes and positions of any child elements. + Clay_LayoutConfig layout; + // Controls the background color of the resulting element. + // By convention specified as 0-255, but interpretation is up to the renderer. + // If no other config is specified, .backgroundColor will generate a RECTANGLE render command, otherwise it will be passed as a property to IMAGE or CUSTOM render commands. + Clay_Color backgroundColor; + // Controls the "radius", or corner rounding of elements, including rectangles, borders and images. + Clay_CornerRadius cornerRadius; + // Controls settings related to aspect ratio scaling. + Clay_AspectRatioElementConfig aspectRatio; + // Controls settings related to image elements. + Clay_ImageElementConfig image; + // Controls whether and how an element "floats", which means it layers over the top of other elements in z order, and doesn't affect the position and size of siblings or parent elements. + // Note: in order to activate floating, .floating.attachTo must be set to something other than the default value. + Clay_FloatingElementConfig floating; + // Used to create CUSTOM render commands, usually to render element types not supported by Clay. + Clay_CustomElementConfig custom; + // Controls whether an element should clip its contents, as well as providing child x,y offset configuration for scrolling. + Clay_ClipElementConfig clip; + // Controls settings related to element borders, and will generate BORDER render commands. + Clay_BorderElementConfig border; + // A pointer that will be transparently passed through to resulting render commands. + void *userData; +} Clay_ElementDeclaration; + +CLAY__WRAPPER_STRUCT(Clay_ElementDeclaration); + +// Represents the type of error clay encountered while computing layout. +typedef CLAY_PACKED_ENUM { + // A text measurement function wasn't provided using Clay_SetMeasureTextFunction(), or the provided function was null. + CLAY_ERROR_TYPE_TEXT_MEASUREMENT_FUNCTION_NOT_PROVIDED, + // Clay attempted to allocate its internal data structures but ran out of space. + // The arena passed to Clay_Initialize was created with a capacity smaller than that required by Clay_MinMemorySize(). + CLAY_ERROR_TYPE_ARENA_CAPACITY_EXCEEDED, + // Clay ran out of capacity in its internal array for storing elements. This limit can be increased with Clay_SetMaxElementCount(). + CLAY_ERROR_TYPE_ELEMENTS_CAPACITY_EXCEEDED, + // Clay ran out of capacity in its internal array for storing elements. This limit can be increased with Clay_SetMaxMeasureTextCacheWordCount(). + CLAY_ERROR_TYPE_TEXT_MEASUREMENT_CAPACITY_EXCEEDED, + // Two elements were declared with exactly the same ID within one layout. + CLAY_ERROR_TYPE_DUPLICATE_ID, + // A floating element was declared using CLAY_ATTACH_TO_ELEMENT_ID and either an invalid .parentId was provided or no element with the provided .parentId was found. + CLAY_ERROR_TYPE_FLOATING_CONTAINER_PARENT_NOT_FOUND, + // An element was declared that using CLAY_SIZING_PERCENT but the percentage value was over 1. Percentage values are expected to be in the 0-1 range. + CLAY_ERROR_TYPE_PERCENTAGE_OVER_1, + // Clay encountered an internal error. It would be wonderful if you could report this so we can fix it! + CLAY_ERROR_TYPE_INTERNAL_ERROR, + // Clay__OpenElement was called more times than Clay__CloseElement, so there were still remaining open elements when the layout ended. + CLAY_ERROR_TYPE_UNBALANCED_OPEN_CLOSE, +} Clay_ErrorType; + +// Data to identify the error that clay has encountered. +typedef struct Clay_ErrorData { + // Represents the type of error clay encountered while computing layout. + // CLAY_ERROR_TYPE_TEXT_MEASUREMENT_FUNCTION_NOT_PROVIDED - A text measurement function wasn't provided using Clay_SetMeasureTextFunction(), or the provided function was null. + // CLAY_ERROR_TYPE_ARENA_CAPACITY_EXCEEDED - Clay attempted to allocate its internal data structures but ran out of space. The arena passed to Clay_Initialize was created with a capacity smaller than that required by Clay_MinMemorySize(). + // CLAY_ERROR_TYPE_ELEMENTS_CAPACITY_EXCEEDED - Clay ran out of capacity in its internal array for storing elements. This limit can be increased with Clay_SetMaxElementCount(). + // CLAY_ERROR_TYPE_TEXT_MEASUREMENT_CAPACITY_EXCEEDED - Clay ran out of capacity in its internal array for storing elements. This limit can be increased with Clay_SetMaxMeasureTextCacheWordCount(). + // CLAY_ERROR_TYPE_DUPLICATE_ID - Two elements were declared with exactly the same ID within one layout. + // CLAY_ERROR_TYPE_FLOATING_CONTAINER_PARENT_NOT_FOUND - A floating element was declared using CLAY_ATTACH_TO_ELEMENT_ID and either an invalid .parentId was provided or no element with the provided .parentId was found. + // CLAY_ERROR_TYPE_PERCENTAGE_OVER_1 - An element was declared that using CLAY_SIZING_PERCENT but the percentage value was over 1. Percentage values are expected to be in the 0-1 range. + // CLAY_ERROR_TYPE_INTERNAL_ERROR - Clay encountered an internal error. It would be wonderful if you could report this so we can fix it! + Clay_ErrorType errorType; + // A string containing human-readable error text that explains the error in more detail. + Clay_String errorText; + // A transparent pointer passed through from when the error handler was first provided. + void *userData; +} Clay_ErrorData; + +// A wrapper struct around Clay's error handler function. +typedef struct { + // A user provided function to call when Clay encounters an error during layout. + void (*errorHandlerFunction)(Clay_ErrorData errorText); + // A pointer that will be transparently passed through to the error handler when it is called. + void *userData; +} Clay_ErrorHandler; + +// Function Forward Declarations --------------------------------- + +// Public API functions ------------------------------------------ + +// Returns the size, in bytes, of the minimum amount of memory Clay requires to operate at its current settings. +CLAY_DLL_EXPORT uint32_t Clay_MinMemorySize(void); +// Creates an arena for clay to use for its internal allocations, given a certain capacity in bytes and a pointer to an allocation of at least that size. +// Intended to be used with Clay_MinMemorySize in the following way: +// uint32_t minMemoryRequired = Clay_MinMemorySize(); +// Clay_Arena clayMemory = Clay_CreateArenaWithCapacityAndMemory(minMemoryRequired, malloc(minMemoryRequired)); +CLAY_DLL_EXPORT Clay_Arena Clay_CreateArenaWithCapacityAndMemory(size_t capacity, void *memory); +// Sets the state of the "pointer" (i.e. the mouse or touch) in Clay's internal data. Used for detecting and responding to mouse events in the debug view, +// as well as for Clay_Hovered() and scroll element handling. +CLAY_DLL_EXPORT void Clay_SetPointerState(Clay_Vector2 position, bool pointerDown); +// Initialize Clay's internal arena and setup required data before layout can begin. Only needs to be called once. +// - arena can be created using Clay_CreateArenaWithCapacityAndMemory() +// - layoutDimensions are the initial bounding dimensions of the layout (i.e. the screen width and height for a full screen layout) +// - errorHandler is used by Clay to inform you if something has gone wrong in configuration or layout. +CLAY_DLL_EXPORT Clay_Context* Clay_Initialize(Clay_Arena arena, Clay_Dimensions layoutDimensions, Clay_ErrorHandler errorHandler); +// Returns the Context that clay is currently using. Used when using multiple instances of clay simultaneously. +CLAY_DLL_EXPORT Clay_Context* Clay_GetCurrentContext(void); +// Sets the context that clay will use to compute the layout. +// Used to restore a context saved from Clay_GetCurrentContext when using multiple instances of clay simultaneously. +CLAY_DLL_EXPORT void Clay_SetCurrentContext(Clay_Context* context); +// Updates the state of Clay's internal scroll data, updating scroll content positions if scrollDelta is non zero, and progressing momentum scrolling. +// - enableDragScrolling when set to true will enable mobile device like "touch drag" scroll of scroll containers, including momentum scrolling after the touch has ended. +// - scrollDelta is the amount to scroll this frame on each axis in pixels. +// - deltaTime is the time in seconds since the last "frame" (scroll update) +CLAY_DLL_EXPORT void Clay_UpdateScrollContainers(bool enableDragScrolling, Clay_Vector2 scrollDelta, float deltaTime); +// Returns the internally stored scroll offset for the currently open element. +// Generally intended for use with clip elements to create scrolling containers. +CLAY_DLL_EXPORT Clay_Vector2 Clay_GetScrollOffset(void); +// Updates the layout dimensions in response to the window or outer container being resized. +CLAY_DLL_EXPORT void Clay_SetLayoutDimensions(Clay_Dimensions dimensions); +// Called before starting any layout declarations. +CLAY_DLL_EXPORT void Clay_BeginLayout(void); +// Called when all layout declarations are finished. +// Computes the layout and generates and returns the array of render commands to draw. +CLAY_DLL_EXPORT Clay_RenderCommandArray Clay_EndLayout(void); +// Calculates a hash ID from the given idString. +// Generally only used for dynamic strings when CLAY_ID("stringLiteral") can't be used. +CLAY_DLL_EXPORT Clay_ElementId Clay_GetElementId(Clay_String idString); +// Calculates a hash ID from the given idString and index. +// - index is used to avoid constructing dynamic ID strings in loops. +// Generally only used for dynamic strings when CLAY_IDI("stringLiteral", index) can't be used. +CLAY_DLL_EXPORT Clay_ElementId Clay_GetElementIdWithIndex(Clay_String idString, uint32_t index); +// Returns layout data such as the final calculated bounding box for an element with a given ID. +// The returned Clay_ElementData contains a `found` bool that will be true if an element with the provided ID was found. +// This ID can be calculated either with CLAY_ID() for string literal IDs, or Clay_GetElementId for dynamic strings. +CLAY_DLL_EXPORT Clay_ElementData Clay_GetElementData(Clay_ElementId id); +// Returns true if the pointer position provided by Clay_SetPointerState is within the current element's bounding box. +// Works during element declaration, e.g. CLAY({ .backgroundColor = Clay_Hovered() ? BLUE : RED }); +CLAY_DLL_EXPORT bool Clay_Hovered(void); +// Bind a callback that will be called when the pointer position provided by Clay_SetPointerState is within the current element's bounding box. +// - onHoverFunction is a function pointer to a user defined function. +// - userData is a pointer that will be transparently passed through when the onHoverFunction is called. +CLAY_DLL_EXPORT void Clay_OnHover(void (*onHoverFunction)(Clay_ElementId elementId, Clay_PointerData pointerData, void *userData), void *userData); +// An imperative function that returns true if the pointer position provided by Clay_SetPointerState is within the element with the provided ID's bounding box. +// This ID can be calculated either with CLAY_ID() for string literal IDs, or Clay_GetElementId for dynamic strings. +CLAY_DLL_EXPORT bool Clay_PointerOver(Clay_ElementId elementId); +// Returns the array of element IDs that the pointer is currently over. +CLAY_DLL_EXPORT Clay_ElementIdArray Clay_GetPointerOverIds(void); +// Returns data representing the state of the scrolling element with the provided ID. +// The returned Clay_ScrollContainerData contains a `found` bool that will be true if a scroll element was found with the provided ID. +// An imperative function that returns true if the pointer position provided by Clay_SetPointerState is within the element with the provided ID's bounding box. +// This ID can be calculated either with CLAY_ID() for string literal IDs, or Clay_GetElementId for dynamic strings. +CLAY_DLL_EXPORT Clay_ScrollContainerData Clay_GetScrollContainerData(Clay_ElementId id); +// Binds a callback function that Clay will call to determine the dimensions of a given string slice. +// - measureTextFunction is a user provided function that adheres to the interface Clay_Dimensions (Clay_StringSlice text, Clay_TextElementConfig *config, void *userData); +// - userData is a pointer that will be transparently passed through when the measureTextFunction is called. +CLAY_DLL_EXPORT void Clay_SetMeasureTextFunction(Clay_Dimensions (*measureTextFunction)(Clay_StringSlice text, Clay_TextElementConfig *config, void *userData), void *userData); +// Experimental - Used in cases where Clay needs to integrate with a system that manages its own scrolling containers externally. +// Please reach out if you plan to use this function, as it may be subject to change. +CLAY_DLL_EXPORT void Clay_SetQueryScrollOffsetFunction(Clay_Vector2 (*queryScrollOffsetFunction)(uint32_t elementId, void *userData), void *userData); +// A bounds-checked "get" function for the Clay_RenderCommandArray returned from Clay_EndLayout(). +CLAY_DLL_EXPORT Clay_RenderCommand * Clay_RenderCommandArray_Get(Clay_RenderCommandArray* array, int32_t index); +// Enables and disables Clay's internal debug tools. +// This state is retained and does not need to be set each frame. +CLAY_DLL_EXPORT void Clay_SetDebugModeEnabled(bool enabled); +// Returns true if Clay's internal debug tools are currently enabled. +CLAY_DLL_EXPORT bool Clay_IsDebugModeEnabled(void); +// Enables and disables visibility culling. By default, Clay will not generate render commands for elements whose bounding box is entirely outside the screen. +CLAY_DLL_EXPORT void Clay_SetCullingEnabled(bool enabled); +// Returns the maximum number of UI elements supported by Clay's current configuration. +CLAY_DLL_EXPORT int32_t Clay_GetMaxElementCount(void); +// Modifies the maximum number of UI elements supported by Clay's current configuration. +// This may require reallocating additional memory, and re-calling Clay_Initialize(); +CLAY_DLL_EXPORT void Clay_SetMaxElementCount(int32_t maxElementCount); +// Returns the maximum number of measured "words" (whitespace seperated runs of characters) that Clay can store in its internal text measurement cache. +CLAY_DLL_EXPORT int32_t Clay_GetMaxMeasureTextCacheWordCount(void); +// Modifies the maximum number of measured "words" (whitespace seperated runs of characters) that Clay can store in its internal text measurement cache. +// This may require reallocating additional memory, and re-calling Clay_Initialize(); +CLAY_DLL_EXPORT void Clay_SetMaxMeasureTextCacheWordCount(int32_t maxMeasureTextCacheWordCount); +// Resets Clay's internal text measurement cache. Useful if font mappings have changed or fonts have been reloaded. +CLAY_DLL_EXPORT void Clay_ResetMeasureTextCache(void); + +// Internal API functions required by macros ---------------------- + +CLAY_DLL_EXPORT void Clay__OpenElement(void); +CLAY_DLL_EXPORT void Clay__OpenElementWithId(Clay_ElementId elementId); +CLAY_DLL_EXPORT void Clay__ConfigureOpenElement(const Clay_ElementDeclaration config); +CLAY_DLL_EXPORT void Clay__ConfigureOpenElementPtr(const Clay_ElementDeclaration *config); +CLAY_DLL_EXPORT void Clay__CloseElement(void); +CLAY_DLL_EXPORT Clay_ElementId Clay__HashString(Clay_String key, uint32_t seed); +CLAY_DLL_EXPORT Clay_ElementId Clay__HashStringWithOffset(Clay_String key, uint32_t offset, uint32_t seed); +CLAY_DLL_EXPORT void Clay__OpenTextElement(Clay_String text, Clay_TextElementConfig *textConfig); +CLAY_DLL_EXPORT Clay_TextElementConfig *Clay__StoreTextElementConfig(Clay_TextElementConfig config); +CLAY_DLL_EXPORT uint32_t Clay__GetParentElementId(void); + +extern Clay_Color Clay__debugViewHighlightColor; +extern uint32_t Clay__debugViewWidth; + +#ifdef __cplusplus +} +#endif + +#endif // CLAY_HEADER + +// ----------------------------------------- +// IMPLEMENTATION -------------------------- +// ----------------------------------------- +#ifdef CLAY_IMPLEMENTATION +#undef CLAY_IMPLEMENTATION + +#ifndef CLAY__NULL +#define CLAY__NULL 0 +#endif + +#ifndef CLAY__MAXFLOAT +#define CLAY__MAXFLOAT 3.40282346638528859812e+38F +#endif + +Clay_LayoutConfig CLAY_LAYOUT_DEFAULT = CLAY__DEFAULT_STRUCT; + +Clay_Color Clay__Color_DEFAULT = CLAY__DEFAULT_STRUCT; +Clay_CornerRadius Clay__CornerRadius_DEFAULT = CLAY__DEFAULT_STRUCT; +Clay_BorderWidth Clay__BorderWidth_DEFAULT = CLAY__DEFAULT_STRUCT; + +// The below functions define array bounds checking and convenience functions for a provided type. +#define CLAY__ARRAY_DEFINE_FUNCTIONS(typeName, arrayName) \ + \ +typedef struct \ +{ \ + int32_t length; \ + typeName *internalArray; \ +} arrayName##Slice; \ + \ +typeName typeName##_DEFAULT = CLAY__DEFAULT_STRUCT; \ + \ +arrayName arrayName##_Allocate_Arena(int32_t capacity, Clay_Arena *arena) { \ + return CLAY__INIT(arrayName){.capacity = capacity, .length = 0, \ + .internalArray = (typeName *)Clay__Array_Allocate_Arena(capacity, sizeof(typeName), arena)}; \ +} \ + \ +typeName *arrayName##_Get(arrayName *array, int32_t index) { \ + return Clay__Array_RangeCheck(index, array->length) ? &array->internalArray[index] : &typeName##_DEFAULT; \ +} \ + \ +typeName arrayName##_GetValue(arrayName *array, int32_t index) { \ + return Clay__Array_RangeCheck(index, array->length) ? array->internalArray[index] : typeName##_DEFAULT; \ +} \ + \ +typeName *arrayName##_Add(arrayName *array, typeName item) { \ + if (Clay__Array_AddCapacityCheck(array->length, array->capacity)) { \ + array->internalArray[array->length++] = item; \ + return &array->internalArray[array->length - 1]; \ + } \ + return &typeName##_DEFAULT; \ +} \ + \ +typeName *arrayName##Slice_Get(arrayName##Slice *slice, int32_t index) { \ + return Clay__Array_RangeCheck(index, slice->length) ? &slice->internalArray[index] : &typeName##_DEFAULT; \ +} \ + \ +typeName arrayName##_RemoveSwapback(arrayName *array, int32_t index) { \ + if (Clay__Array_RangeCheck(index, array->length)) { \ + array->length--; \ + typeName removed = array->internalArray[index]; \ + array->internalArray[index] = array->internalArray[array->length]; \ + return removed; \ + } \ + return typeName##_DEFAULT; \ +} \ + \ +void arrayName##_Set(arrayName *array, int32_t index, typeName value) { \ + if (Clay__Array_RangeCheck(index, array->capacity)) { \ + array->internalArray[index] = value; \ + array->length = index < array->length ? array->length : index + 1; \ + } \ +} \ + +#define CLAY__ARRAY_DEFINE(typeName, arrayName) \ +typedef struct \ +{ \ + int32_t capacity; \ + int32_t length; \ + typeName *internalArray; \ +} arrayName; \ + \ +CLAY__ARRAY_DEFINE_FUNCTIONS(typeName, arrayName) \ + +Clay_Context *Clay__currentContext; +int32_t Clay__defaultMaxElementCount = 8192; +int32_t Clay__defaultMaxMeasureTextWordCacheCount = 16384; + +void Clay__ErrorHandlerFunctionDefault(Clay_ErrorData errorText) { + (void) errorText; +} + +Clay_String CLAY__SPACECHAR = { .length = 1, .chars = " " }; +Clay_String CLAY__STRING_DEFAULT = { .length = 0, .chars = NULL }; + +typedef struct { + bool maxElementsExceeded; + bool maxRenderCommandsExceeded; + bool maxTextMeasureCacheExceeded; + bool textMeasurementFunctionNotSet; +} Clay_BooleanWarnings; + +typedef struct { + Clay_String baseMessage; + Clay_String dynamicMessage; +} Clay__Warning; + +Clay__Warning CLAY__WARNING_DEFAULT = CLAY__DEFAULT_STRUCT; + +typedef struct { + int32_t capacity; + int32_t length; + Clay__Warning *internalArray; +} Clay__WarningArray; + +typedef struct { + Clay_Color backgroundColor; + Clay_CornerRadius cornerRadius; + void* userData; +} Clay_SharedElementConfig; + +CLAY__WRAPPER_STRUCT(Clay_SharedElementConfig); + +Clay__WarningArray Clay__WarningArray_Allocate_Arena(int32_t capacity, Clay_Arena *arena); +Clay__Warning *Clay__WarningArray_Add(Clay__WarningArray *array, Clay__Warning item); +void* Clay__Array_Allocate_Arena(int32_t capacity, uint32_t itemSize, Clay_Arena *arena); +bool Clay__Array_RangeCheck(int32_t index, int32_t length); +bool Clay__Array_AddCapacityCheck(int32_t length, int32_t capacity); + +CLAY__ARRAY_DEFINE(bool, Clay__boolArray) +CLAY__ARRAY_DEFINE(int32_t, Clay__int32_tArray) +CLAY__ARRAY_DEFINE(char, Clay__charArray) +CLAY__ARRAY_DEFINE_FUNCTIONS(Clay_ElementId, Clay_ElementIdArray) +CLAY__ARRAY_DEFINE(Clay_LayoutConfig, Clay__LayoutConfigArray) +CLAY__ARRAY_DEFINE(Clay_TextElementConfig, Clay__TextElementConfigArray) +CLAY__ARRAY_DEFINE(Clay_AspectRatioElementConfig, Clay__AspectRatioElementConfigArray) +CLAY__ARRAY_DEFINE(Clay_ImageElementConfig, Clay__ImageElementConfigArray) +CLAY__ARRAY_DEFINE(Clay_FloatingElementConfig, Clay__FloatingElementConfigArray) +CLAY__ARRAY_DEFINE(Clay_CustomElementConfig, Clay__CustomElementConfigArray) +CLAY__ARRAY_DEFINE(Clay_ClipElementConfig, Clay__ClipElementConfigArray) +CLAY__ARRAY_DEFINE(Clay_BorderElementConfig, Clay__BorderElementConfigArray) +CLAY__ARRAY_DEFINE(Clay_String, Clay__StringArray) +CLAY__ARRAY_DEFINE(Clay_SharedElementConfig, Clay__SharedElementConfigArray) +CLAY__ARRAY_DEFINE_FUNCTIONS(Clay_RenderCommand, Clay_RenderCommandArray) + +typedef CLAY_PACKED_ENUM { + CLAY__ELEMENT_CONFIG_TYPE_NONE, + CLAY__ELEMENT_CONFIG_TYPE_BORDER, + CLAY__ELEMENT_CONFIG_TYPE_FLOATING, + CLAY__ELEMENT_CONFIG_TYPE_CLIP, + CLAY__ELEMENT_CONFIG_TYPE_ASPECT, + CLAY__ELEMENT_CONFIG_TYPE_IMAGE, + CLAY__ELEMENT_CONFIG_TYPE_TEXT, + CLAY__ELEMENT_CONFIG_TYPE_CUSTOM, + CLAY__ELEMENT_CONFIG_TYPE_SHARED, +} Clay__ElementConfigType; + +typedef union { + Clay_TextElementConfig *textElementConfig; + Clay_AspectRatioElementConfig *aspectRatioElementConfig; + Clay_ImageElementConfig *imageElementConfig; + Clay_FloatingElementConfig *floatingElementConfig; + Clay_CustomElementConfig *customElementConfig; + Clay_ClipElementConfig *clipElementConfig; + Clay_BorderElementConfig *borderElementConfig; + Clay_SharedElementConfig *sharedElementConfig; +} Clay_ElementConfigUnion; + +typedef struct { + Clay__ElementConfigType type; + Clay_ElementConfigUnion config; +} Clay_ElementConfig; + +CLAY__ARRAY_DEFINE(Clay_ElementConfig, Clay__ElementConfigArray) + +typedef struct { + Clay_Dimensions dimensions; + Clay_String line; +} Clay__WrappedTextLine; + +CLAY__ARRAY_DEFINE(Clay__WrappedTextLine, Clay__WrappedTextLineArray) + +typedef struct { + Clay_String text; + Clay_Dimensions preferredDimensions; + int32_t elementIndex; + Clay__WrappedTextLineArraySlice wrappedLines; +} Clay__TextElementData; + +CLAY__ARRAY_DEFINE(Clay__TextElementData, Clay__TextElementDataArray) + +typedef struct { + int32_t *elements; + uint16_t length; +} Clay__LayoutElementChildren; + +typedef struct { + union { + Clay__LayoutElementChildren children; + Clay__TextElementData *textElementData; + } childrenOrTextContent; + Clay_Dimensions dimensions; + Clay_Dimensions minDimensions; + Clay_LayoutConfig *layoutConfig; + Clay__ElementConfigArraySlice elementConfigs; + uint32_t id; + uint16_t floatingChildrenCount; +} Clay_LayoutElement; + +CLAY__ARRAY_DEFINE(Clay_LayoutElement, Clay_LayoutElementArray) + +typedef struct { + Clay_LayoutElement *layoutElement; + Clay_BoundingBox boundingBox; + Clay_Dimensions contentSize; + Clay_Vector2 scrollOrigin; + Clay_Vector2 pointerOrigin; + Clay_Vector2 scrollMomentum; + Clay_Vector2 scrollPosition; + Clay_Vector2 previousDelta; + float momentumTime; + uint32_t elementId; + bool openThisFrame; + bool pointerScrollActive; +} Clay__ScrollContainerDataInternal; + +CLAY__ARRAY_DEFINE(Clay__ScrollContainerDataInternal, Clay__ScrollContainerDataInternalArray) + +typedef struct { + bool collision; + bool collapsed; +} Clay__DebugElementData; + +CLAY__ARRAY_DEFINE(Clay__DebugElementData, Clay__DebugElementDataArray) + +typedef struct { // todo get this struct into a single cache line + Clay_BoundingBox boundingBox; + Clay_ElementId elementId; + Clay_LayoutElement* layoutElement; + void (*onHoverFunction)(Clay_ElementId elementId, Clay_PointerData pointerInfo, void *userData); + void *hoverFunctionUserData; + int32_t nextIndex; + uint32_t generation; + Clay__DebugElementData *debugData; +} Clay_LayoutElementHashMapItem; + +CLAY__ARRAY_DEFINE(Clay_LayoutElementHashMapItem, Clay__LayoutElementHashMapItemArray) + +typedef struct { + int32_t startOffset; + int32_t length; + float width; + int32_t next; +} Clay__MeasuredWord; + +CLAY__ARRAY_DEFINE(Clay__MeasuredWord, Clay__MeasuredWordArray) + +typedef struct { + Clay_Dimensions unwrappedDimensions; + int32_t measuredWordsStartIndex; + float minWidth; + bool containsNewlines; + // Hash map data + uint32_t id; + int32_t nextIndex; + uint32_t generation; +} Clay__MeasureTextCacheItem; + +CLAY__ARRAY_DEFINE(Clay__MeasureTextCacheItem, Clay__MeasureTextCacheItemArray) + +typedef struct { + Clay_LayoutElement *layoutElement; + Clay_Vector2 position; + Clay_Vector2 nextChildOffset; +} Clay__LayoutElementTreeNode; + +CLAY__ARRAY_DEFINE(Clay__LayoutElementTreeNode, Clay__LayoutElementTreeNodeArray) + +typedef struct { + int32_t layoutElementIndex; + uint32_t parentId; // This can be zero in the case of the root layout tree + uint32_t clipElementId; // This can be zero if there is no clip element + int16_t zIndex; + Clay_Vector2 pointerOffset; // Only used when scroll containers are managed externally +} Clay__LayoutElementTreeRoot; + +CLAY__ARRAY_DEFINE(Clay__LayoutElementTreeRoot, Clay__LayoutElementTreeRootArray) + +struct Clay_Context { + int32_t maxElementCount; + int32_t maxMeasureTextCacheWordCount; + bool warningsEnabled; + Clay_ErrorHandler errorHandler; + Clay_BooleanWarnings booleanWarnings; + Clay__WarningArray warnings; + + Clay_PointerData pointerInfo; + Clay_Dimensions layoutDimensions; + Clay_ElementId dynamicElementIndexBaseHash; + uint32_t dynamicElementIndex; + bool debugModeEnabled; + bool disableCulling; + bool externalScrollHandlingEnabled; + uint32_t debugSelectedElementId; + uint32_t generation; + uintptr_t arenaResetOffset; + void *measureTextUserData; + void *queryScrollOffsetUserData; + Clay_Arena internalArena; + // Layout Elements / Render Commands + Clay_LayoutElementArray layoutElements; + Clay_RenderCommandArray renderCommands; + Clay__int32_tArray openLayoutElementStack; + Clay__int32_tArray layoutElementChildren; + Clay__int32_tArray layoutElementChildrenBuffer; + Clay__TextElementDataArray textElementData; + Clay__int32_tArray aspectRatioElementIndexes; + Clay__int32_tArray reusableElementIndexBuffer; + Clay__int32_tArray layoutElementClipElementIds; + // Configs + Clay__LayoutConfigArray layoutConfigs; + Clay__ElementConfigArray elementConfigs; + Clay__TextElementConfigArray textElementConfigs; + Clay__AspectRatioElementConfigArray aspectRatioElementConfigs; + Clay__ImageElementConfigArray imageElementConfigs; + Clay__FloatingElementConfigArray floatingElementConfigs; + Clay__ClipElementConfigArray clipElementConfigs; + Clay__CustomElementConfigArray customElementConfigs; + Clay__BorderElementConfigArray borderElementConfigs; + Clay__SharedElementConfigArray sharedElementConfigs; + // Misc Data Structures + Clay__StringArray layoutElementIdStrings; + Clay__WrappedTextLineArray wrappedTextLines; + Clay__LayoutElementTreeNodeArray layoutElementTreeNodeArray1; + Clay__LayoutElementTreeRootArray layoutElementTreeRoots; + Clay__LayoutElementHashMapItemArray layoutElementsHashMapInternal; + Clay__int32_tArray layoutElementsHashMap; + Clay__MeasureTextCacheItemArray measureTextHashMapInternal; + Clay__int32_tArray measureTextHashMapInternalFreeList; + Clay__int32_tArray measureTextHashMap; + Clay__MeasuredWordArray measuredWords; + Clay__int32_tArray measuredWordsFreeList; + Clay__int32_tArray openClipElementStack; + Clay_ElementIdArray pointerOverIds; + Clay__ScrollContainerDataInternalArray scrollContainerDatas; + Clay__boolArray treeNodeVisited; + Clay__charArray dynamicStringData; + Clay__DebugElementDataArray debugElementData; +}; + +Clay_Context* Clay__Context_Allocate_Arena(Clay_Arena *arena) { + size_t totalSizeBytes = sizeof(Clay_Context); + if (totalSizeBytes > arena->capacity) + { + return NULL; + } + arena->nextAllocation += totalSizeBytes; + return (Clay_Context*)(arena->memory); +} + +Clay_String Clay__WriteStringToCharBuffer(Clay__charArray *buffer, Clay_String string) { + for (int32_t i = 0; i < string.length; i++) { + buffer->internalArray[buffer->length + i] = string.chars[i]; + } + buffer->length += string.length; + return CLAY__INIT(Clay_String) { .length = string.length, .chars = (const char *)(buffer->internalArray + buffer->length - string.length) }; +} + +#ifdef CLAY_WASM + __attribute__((import_module("clay"), import_name("measureTextFunction"))) Clay_Dimensions Clay__MeasureText(Clay_StringSlice text, Clay_TextElementConfig *config, void *userData); + __attribute__((import_module("clay"), import_name("queryScrollOffsetFunction"))) Clay_Vector2 Clay__QueryScrollOffset(uint32_t elementId, void *userData); +#else + Clay_Dimensions (*Clay__MeasureText)(Clay_StringSlice text, Clay_TextElementConfig *config, void *userData); + Clay_Vector2 (*Clay__QueryScrollOffset)(uint32_t elementId, void *userData); +#endif + +Clay_LayoutElement* Clay__GetOpenLayoutElement(void) { + Clay_Context* context = Clay_GetCurrentContext(); + return Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&context->openLayoutElementStack, context->openLayoutElementStack.length - 1)); +} + +uint32_t Clay__GetParentElementId(void) { + Clay_Context* context = Clay_GetCurrentContext(); + return Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&context->openLayoutElementStack, context->openLayoutElementStack.length - 2))->id; +} + +Clay_LayoutConfig * Clay__StoreLayoutConfig(Clay_LayoutConfig config) { return Clay_GetCurrentContext()->booleanWarnings.maxElementsExceeded ? &CLAY_LAYOUT_DEFAULT : Clay__LayoutConfigArray_Add(&Clay_GetCurrentContext()->layoutConfigs, config); } +Clay_TextElementConfig * Clay__StoreTextElementConfig(Clay_TextElementConfig config) { return Clay_GetCurrentContext()->booleanWarnings.maxElementsExceeded ? &Clay_TextElementConfig_DEFAULT : Clay__TextElementConfigArray_Add(&Clay_GetCurrentContext()->textElementConfigs, config); } +Clay_AspectRatioElementConfig * Clay__StoreAspectRatioElementConfig(Clay_AspectRatioElementConfig config) { return Clay_GetCurrentContext()->booleanWarnings.maxElementsExceeded ? &Clay_AspectRatioElementConfig_DEFAULT : Clay__AspectRatioElementConfigArray_Add(&Clay_GetCurrentContext()->aspectRatioElementConfigs, config); } +Clay_ImageElementConfig * Clay__StoreImageElementConfig(Clay_ImageElementConfig config) { return Clay_GetCurrentContext()->booleanWarnings.maxElementsExceeded ? &Clay_ImageElementConfig_DEFAULT : Clay__ImageElementConfigArray_Add(&Clay_GetCurrentContext()->imageElementConfigs, config); } +Clay_FloatingElementConfig * Clay__StoreFloatingElementConfig(Clay_FloatingElementConfig config) { return Clay_GetCurrentContext()->booleanWarnings.maxElementsExceeded ? &Clay_FloatingElementConfig_DEFAULT : Clay__FloatingElementConfigArray_Add(&Clay_GetCurrentContext()->floatingElementConfigs, config); } +Clay_CustomElementConfig * Clay__StoreCustomElementConfig(Clay_CustomElementConfig config) { return Clay_GetCurrentContext()->booleanWarnings.maxElementsExceeded ? &Clay_CustomElementConfig_DEFAULT : Clay__CustomElementConfigArray_Add(&Clay_GetCurrentContext()->customElementConfigs, config); } +Clay_ClipElementConfig * Clay__StoreClipElementConfig(Clay_ClipElementConfig config) { return Clay_GetCurrentContext()->booleanWarnings.maxElementsExceeded ? &Clay_ClipElementConfig_DEFAULT : Clay__ClipElementConfigArray_Add(&Clay_GetCurrentContext()->clipElementConfigs, config); } +Clay_BorderElementConfig * Clay__StoreBorderElementConfig(Clay_BorderElementConfig config) { return Clay_GetCurrentContext()->booleanWarnings.maxElementsExceeded ? &Clay_BorderElementConfig_DEFAULT : Clay__BorderElementConfigArray_Add(&Clay_GetCurrentContext()->borderElementConfigs, config); } +Clay_SharedElementConfig * Clay__StoreSharedElementConfig(Clay_SharedElementConfig config) { return Clay_GetCurrentContext()->booleanWarnings.maxElementsExceeded ? &Clay_SharedElementConfig_DEFAULT : Clay__SharedElementConfigArray_Add(&Clay_GetCurrentContext()->sharedElementConfigs, config); } + +Clay_ElementConfig Clay__AttachElementConfig(Clay_ElementConfigUnion config, Clay__ElementConfigType type) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->booleanWarnings.maxElementsExceeded) { + return CLAY__INIT(Clay_ElementConfig) CLAY__DEFAULT_STRUCT; + } + Clay_LayoutElement *openLayoutElement = Clay__GetOpenLayoutElement(); + openLayoutElement->elementConfigs.length++; + return *Clay__ElementConfigArray_Add(&context->elementConfigs, CLAY__INIT(Clay_ElementConfig) { .type = type, .config = config }); +} + +Clay_ElementConfigUnion Clay__FindElementConfigWithType(Clay_LayoutElement *element, Clay__ElementConfigType type) { + for (int32_t i = 0; i < element->elementConfigs.length; i++) { + Clay_ElementConfig *config = Clay__ElementConfigArraySlice_Get(&element->elementConfigs, i); + if (config->type == type) { + return config->config; + } + } + return CLAY__INIT(Clay_ElementConfigUnion) { NULL }; +} + +Clay_ElementId Clay__HashNumber(const uint32_t offset, const uint32_t seed) { + uint32_t hash = seed; + hash += (offset + 48); + hash += (hash << 10); + hash ^= (hash >> 6); + + hash += (hash << 3); + hash ^= (hash >> 11); + hash += (hash << 15); + return CLAY__INIT(Clay_ElementId) { .id = hash + 1, .offset = offset, .baseId = seed, .stringId = CLAY__STRING_DEFAULT }; // Reserve the hash result of zero as "null id" +} + +Clay_ElementId Clay__HashString(Clay_String key, const uint32_t seed) { + uint32_t hash = seed; + + for (int32_t i = 0; i < key.length; i++) { + hash += key.chars[i]; + hash += (hash << 10); + hash ^= (hash >> 6); + } + + hash += (hash << 3); + hash ^= (hash >> 11); + hash += (hash << 15); + return CLAY__INIT(Clay_ElementId) { .id = hash + 1, .offset = 0, .baseId = hash + 1, .stringId = key }; // Reserve the hash result of zero as "null id" +} + +Clay_ElementId Clay__HashStringWithOffset(Clay_String key, const uint32_t offset, const uint32_t seed) { + uint32_t hash = 0; + uint32_t base = seed; + + for (int32_t i = 0; i < key.length; i++) { + base += key.chars[i]; + base += (base << 10); + base ^= (base >> 6); + } + hash = base; + hash += offset; + hash += (hash << 10); + hash ^= (hash >> 6); + + hash += (hash << 3); + base += (base << 3); + hash ^= (hash >> 11); + base ^= (base >> 11); + hash += (hash << 15); + base += (base << 15); + return CLAY__INIT(Clay_ElementId) { .id = hash + 1, .offset = offset, .baseId = base + 1, .stringId = key }; // Reserve the hash result of zero as "null id" +} + +#if !defined(CLAY_DISABLE_SIMD) && (defined(__x86_64__) || defined(_M_X64) || defined(_M_AMD64)) +static inline __m128i Clay__SIMDRotateLeft(__m128i x, int r) { + return _mm_or_si128(_mm_slli_epi64(x, r), _mm_srli_epi64(x, 64 - r)); +} + +static inline void Clay__SIMDARXMix(__m128i* a, __m128i* b) { + *a = _mm_add_epi64(*a, *b); + *b = _mm_xor_si128(Clay__SIMDRotateLeft(*b, 17), *a); +} + +uint64_t Clay__HashData(const uint8_t* data, size_t length) { + // Pinched these constants from the BLAKE implementation + __m128i v0 = _mm_set1_epi64x(0x6a09e667f3bcc908ULL); + __m128i v1 = _mm_set1_epi64x(0xbb67ae8584caa73bULL); + __m128i v2 = _mm_set1_epi64x(0x3c6ef372fe94f82bULL); + __m128i v3 = _mm_set1_epi64x(0xa54ff53a5f1d36f1ULL); + + uint8_t overflowBuffer[16] = { 0 }; // Temporary buffer for small inputs + + while (length > 0) { + __m128i msg; + if (length >= 16) { + msg = _mm_loadu_si128((const __m128i*)data); + data += 16; + length -= 16; + } + else { + for (size_t i = 0; i < length; i++) { + overflowBuffer[i] = data[i]; + } + msg = _mm_loadu_si128((const __m128i*)overflowBuffer); + length = 0; + } + + v0 = _mm_xor_si128(v0, msg); + Clay__SIMDARXMix(&v0, &v1); + Clay__SIMDARXMix(&v2, &v3); + + v0 = _mm_add_epi64(v0, v2); + v1 = _mm_add_epi64(v1, v3); + } + + Clay__SIMDARXMix(&v0, &v1); + Clay__SIMDARXMix(&v2, &v3); + v0 = _mm_add_epi64(v0, v2); + v1 = _mm_add_epi64(v1, v3); + v0 = _mm_add_epi64(v0, v1); + + uint64_t result[2]; + _mm_storeu_si128((__m128i*)result, v0); + + return result[0] ^ result[1]; +} +#elif !defined(CLAY_DISABLE_SIMD) && defined(__aarch64__) +static inline void Clay__SIMDARXMix(uint64x2_t* a, uint64x2_t* b) { + *a = vaddq_u64(*a, *b); + *b = veorq_u64(vorrq_u64(vshlq_n_u64(*b, 17), vshrq_n_u64(*b, 64 - 17)), *a); +} + +uint64_t Clay__HashData(const uint8_t* data, size_t length) { + // Pinched these constants from the BLAKE implementation + uint64x2_t v0 = vdupq_n_u64(0x6a09e667f3bcc908ULL); + uint64x2_t v1 = vdupq_n_u64(0xbb67ae8584caa73bULL); + uint64x2_t v2 = vdupq_n_u64(0x3c6ef372fe94f82bULL); + uint64x2_t v3 = vdupq_n_u64(0xa54ff53a5f1d36f1ULL); + + uint8_t overflowBuffer[8] = { 0 }; + + while (length > 0) { + uint64x2_t msg; + if (length > 16) { + msg = vld1q_u64((const uint64_t*)data); + data += 16; + length -= 16; + } + else if (length > 8) { + msg = vcombine_u64(vld1_u64((const uint64_t*)data), vdup_n_u64(0)); + data += 8; + length -= 8; + } + else { + for (size_t i = 0; i < length; i++) { + overflowBuffer[i] = data[i]; + } + uint8x8_t lower = vld1_u8(overflowBuffer); + msg = vreinterpretq_u64_u8(vcombine_u8(lower, vdup_n_u8(0))); + length = 0; + } + v0 = veorq_u64(v0, msg); + Clay__SIMDARXMix(&v0, &v1); + Clay__SIMDARXMix(&v2, &v3); + + v0 = vaddq_u64(v0, v2); + v1 = vaddq_u64(v1, v3); + } + + Clay__SIMDARXMix(&v0, &v1); + Clay__SIMDARXMix(&v2, &v3); + v0 = vaddq_u64(v0, v2); + v1 = vaddq_u64(v1, v3); + v0 = vaddq_u64(v0, v1); + + uint64_t result[2]; + vst1q_u64(result, v0); + + return result[0] ^ result[1]; +} +#else +uint64_t Clay__HashData(const uint8_t* data, size_t length) { + uint64_t hash = 0; + + for (size_t i = 0; i < length; i++) { + hash += data[i]; + hash += (hash << 10); + hash ^= (hash >> 6); + } + return hash; +} +#endif + +uint32_t Clay__HashStringContentsWithConfig(Clay_String *text, Clay_TextElementConfig *config) { + uint32_t hash = 0; + if (text->isStaticallyAllocated) { + hash += (uintptr_t)text->chars; + hash += (hash << 10); + hash ^= (hash >> 6); + hash += text->length; + hash += (hash << 10); + hash ^= (hash >> 6); + } else { + hash = Clay__HashData((const uint8_t *)text->chars, text->length) % UINT32_MAX; + } + + hash += config->fontId; + hash += (hash << 10); + hash ^= (hash >> 6); + + hash += config->fontSize; + hash += (hash << 10); + hash ^= (hash >> 6); + + hash += config->letterSpacing; + hash += (hash << 10); + hash ^= (hash >> 6); + + hash += (hash << 3); + hash ^= (hash >> 11); + hash += (hash << 15); + return hash + 1; // Reserve the hash result of zero as "null id" +} + +Clay__MeasuredWord *Clay__AddMeasuredWord(Clay__MeasuredWord word, Clay__MeasuredWord *previousWord) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->measuredWordsFreeList.length > 0) { + uint32_t newItemIndex = Clay__int32_tArray_GetValue(&context->measuredWordsFreeList, (int)context->measuredWordsFreeList.length - 1); + context->measuredWordsFreeList.length--; + Clay__MeasuredWordArray_Set(&context->measuredWords, (int)newItemIndex, word); + previousWord->next = (int32_t)newItemIndex; + return Clay__MeasuredWordArray_Get(&context->measuredWords, (int)newItemIndex); + } else { + previousWord->next = (int32_t)context->measuredWords.length; + return Clay__MeasuredWordArray_Add(&context->measuredWords, word); + } +} + +Clay__MeasureTextCacheItem *Clay__MeasureTextCached(Clay_String *text, Clay_TextElementConfig *config) { + Clay_Context* context = Clay_GetCurrentContext(); + #ifndef CLAY_WASM + if (!Clay__MeasureText) { + if (!context->booleanWarnings.textMeasurementFunctionNotSet) { + context->booleanWarnings.textMeasurementFunctionNotSet = true; + context->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_TEXT_MEASUREMENT_FUNCTION_NOT_PROVIDED, + .errorText = CLAY_STRING("Clay's internal MeasureText function is null. You may have forgotten to call Clay_SetMeasureTextFunction(), or passed a NULL function pointer by mistake."), + .userData = context->errorHandler.userData }); + } + return &Clay__MeasureTextCacheItem_DEFAULT; + } + #endif + uint32_t id = Clay__HashStringContentsWithConfig(text, config); + uint32_t hashBucket = id % (context->maxMeasureTextCacheWordCount / 32); + int32_t elementIndexPrevious = 0; + int32_t elementIndex = context->measureTextHashMap.internalArray[hashBucket]; + while (elementIndex != 0) { + Clay__MeasureTextCacheItem *hashEntry = Clay__MeasureTextCacheItemArray_Get(&context->measureTextHashMapInternal, elementIndex); + if (hashEntry->id == id) { + hashEntry->generation = context->generation; + return hashEntry; + } + // This element hasn't been seen in a few frames, delete the hash map item + if (context->generation - hashEntry->generation > 2) { + // Add all the measured words that were included in this measurement to the freelist + int32_t nextWordIndex = hashEntry->measuredWordsStartIndex; + while (nextWordIndex != -1) { + Clay__MeasuredWord *measuredWord = Clay__MeasuredWordArray_Get(&context->measuredWords, nextWordIndex); + Clay__int32_tArray_Add(&context->measuredWordsFreeList, nextWordIndex); + nextWordIndex = measuredWord->next; + } + + int32_t nextIndex = hashEntry->nextIndex; + Clay__MeasureTextCacheItemArray_Set(&context->measureTextHashMapInternal, elementIndex, CLAY__INIT(Clay__MeasureTextCacheItem) { .measuredWordsStartIndex = -1 }); + Clay__int32_tArray_Add(&context->measureTextHashMapInternalFreeList, elementIndex); + if (elementIndexPrevious == 0) { + context->measureTextHashMap.internalArray[hashBucket] = nextIndex; + } else { + Clay__MeasureTextCacheItem *previousHashEntry = Clay__MeasureTextCacheItemArray_Get(&context->measureTextHashMapInternal, elementIndexPrevious); + previousHashEntry->nextIndex = nextIndex; + } + elementIndex = nextIndex; + } else { + elementIndexPrevious = elementIndex; + elementIndex = hashEntry->nextIndex; + } + } + + int32_t newItemIndex = 0; + Clay__MeasureTextCacheItem newCacheItem = { .measuredWordsStartIndex = -1, .id = id, .generation = context->generation }; + Clay__MeasureTextCacheItem *measured = NULL; + if (context->measureTextHashMapInternalFreeList.length > 0) { + newItemIndex = Clay__int32_tArray_GetValue(&context->measureTextHashMapInternalFreeList, context->measureTextHashMapInternalFreeList.length - 1); + context->measureTextHashMapInternalFreeList.length--; + Clay__MeasureTextCacheItemArray_Set(&context->measureTextHashMapInternal, newItemIndex, newCacheItem); + measured = Clay__MeasureTextCacheItemArray_Get(&context->measureTextHashMapInternal, newItemIndex); + } else { + if (context->measureTextHashMapInternal.length == context->measureTextHashMapInternal.capacity - 1) { + if (!context->booleanWarnings.maxTextMeasureCacheExceeded) { + context->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_ELEMENTS_CAPACITY_EXCEEDED, + .errorText = CLAY_STRING("Clay ran out of capacity while attempting to measure text elements. Try using Clay_SetMaxElementCount() with a higher value."), + .userData = context->errorHandler.userData }); + context->booleanWarnings.maxTextMeasureCacheExceeded = true; + } + return &Clay__MeasureTextCacheItem_DEFAULT; + } + measured = Clay__MeasureTextCacheItemArray_Add(&context->measureTextHashMapInternal, newCacheItem); + newItemIndex = context->measureTextHashMapInternal.length - 1; + } + + int32_t start = 0; + int32_t end = 0; + float lineWidth = 0; + float measuredWidth = 0; + float measuredHeight = 0; + float spaceWidth = Clay__MeasureText(CLAY__INIT(Clay_StringSlice) { .length = 1, .chars = CLAY__SPACECHAR.chars, .baseChars = CLAY__SPACECHAR.chars }, config, context->measureTextUserData).width; + Clay__MeasuredWord tempWord = { .next = -1 }; + Clay__MeasuredWord *previousWord = &tempWord; + while (end < text->length) { + if (context->measuredWords.length == context->measuredWords.capacity - 1) { + if (!context->booleanWarnings.maxTextMeasureCacheExceeded) { + context->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_TEXT_MEASUREMENT_CAPACITY_EXCEEDED, + .errorText = CLAY_STRING("Clay has run out of space in it's internal text measurement cache. Try using Clay_SetMaxMeasureTextCacheWordCount() (default 16384, with 1 unit storing 1 measured word)."), + .userData = context->errorHandler.userData }); + context->booleanWarnings.maxTextMeasureCacheExceeded = true; + } + return &Clay__MeasureTextCacheItem_DEFAULT; + } + char current = text->chars[end]; + if (current == ' ' || current == '\n') { + int32_t length = end - start; + Clay_Dimensions dimensions = CLAY__DEFAULT_STRUCT; + if (length > 0) { + dimensions = Clay__MeasureText(CLAY__INIT(Clay_StringSlice) {.length = length, .chars = &text->chars[start], .baseChars = text->chars}, config, context->measureTextUserData); + } + measured->minWidth = CLAY__MAX(dimensions.width, measured->minWidth); + measuredHeight = CLAY__MAX(measuredHeight, dimensions.height); + if (current == ' ') { + dimensions.width += spaceWidth; + previousWord = Clay__AddMeasuredWord(CLAY__INIT(Clay__MeasuredWord) { .startOffset = start, .length = length + 1, .width = dimensions.width, .next = -1 }, previousWord); + lineWidth += dimensions.width; + } + if (current == '\n') { + if (length > 0) { + previousWord = Clay__AddMeasuredWord(CLAY__INIT(Clay__MeasuredWord) { .startOffset = start, .length = length, .width = dimensions.width, .next = -1 }, previousWord); + } + previousWord = Clay__AddMeasuredWord(CLAY__INIT(Clay__MeasuredWord) { .startOffset = end + 1, .length = 0, .width = 0, .next = -1 }, previousWord); + lineWidth += dimensions.width; + measuredWidth = CLAY__MAX(lineWidth, measuredWidth); + measured->containsNewlines = true; + lineWidth = 0; + } + start = end + 1; + } + end++; + } + if (end - start > 0) { + Clay_Dimensions dimensions = Clay__MeasureText(CLAY__INIT(Clay_StringSlice) { .length = end - start, .chars = &text->chars[start], .baseChars = text->chars }, config, context->measureTextUserData); + Clay__AddMeasuredWord(CLAY__INIT(Clay__MeasuredWord) { .startOffset = start, .length = end - start, .width = dimensions.width, .next = -1 }, previousWord); + lineWidth += dimensions.width; + measuredHeight = CLAY__MAX(measuredHeight, dimensions.height); + measured->minWidth = CLAY__MAX(dimensions.width, measured->minWidth); + } + measuredWidth = CLAY__MAX(lineWidth, measuredWidth) - config->letterSpacing; + + measured->measuredWordsStartIndex = tempWord.next; + measured->unwrappedDimensions.width = measuredWidth; + measured->unwrappedDimensions.height = measuredHeight; + + if (elementIndexPrevious != 0) { + Clay__MeasureTextCacheItemArray_Get(&context->measureTextHashMapInternal, elementIndexPrevious)->nextIndex = newItemIndex; + } else { + context->measureTextHashMap.internalArray[hashBucket] = newItemIndex; + } + return measured; +} + +bool Clay__PointIsInsideRect(Clay_Vector2 point, Clay_BoundingBox rect) { + return point.x >= rect.x && point.x <= rect.x + rect.width && point.y >= rect.y && point.y <= rect.y + rect.height; +} + +Clay_LayoutElementHashMapItem* Clay__AddHashMapItem(Clay_ElementId elementId, Clay_LayoutElement* layoutElement) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->layoutElementsHashMapInternal.length == context->layoutElementsHashMapInternal.capacity - 1) { + return NULL; + } + Clay_LayoutElementHashMapItem item = { .elementId = elementId, .layoutElement = layoutElement, .nextIndex = -1, .generation = context->generation + 1 }; + uint32_t hashBucket = elementId.id % context->layoutElementsHashMap.capacity; + int32_t hashItemPrevious = -1; + int32_t hashItemIndex = context->layoutElementsHashMap.internalArray[hashBucket]; + while (hashItemIndex != -1) { // Just replace collision, not a big deal - leave it up to the end user + Clay_LayoutElementHashMapItem *hashItem = Clay__LayoutElementHashMapItemArray_Get(&context->layoutElementsHashMapInternal, hashItemIndex); + if (hashItem->elementId.id == elementId.id) { // Collision - resolve based on generation + item.nextIndex = hashItem->nextIndex; + if (hashItem->generation <= context->generation) { // First collision - assume this is the "same" element + hashItem->elementId = elementId; // Make sure to copy this across. If the stringId reference has changed, we should update the hash item to use the new one. + hashItem->generation = context->generation + 1; + hashItem->layoutElement = layoutElement; + hashItem->debugData->collision = false; + hashItem->onHoverFunction = NULL; + hashItem->hoverFunctionUserData = 0; + } else { // Multiple collisions this frame - two elements have the same ID + context->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_DUPLICATE_ID, + .errorText = CLAY_STRING("An element with this ID was already previously declared during this layout."), + .userData = context->errorHandler.userData }); + if (context->debugModeEnabled) { + hashItem->debugData->collision = true; + } + } + return hashItem; + } + hashItemPrevious = hashItemIndex; + hashItemIndex = hashItem->nextIndex; + } + Clay_LayoutElementHashMapItem *hashItem = Clay__LayoutElementHashMapItemArray_Add(&context->layoutElementsHashMapInternal, item); + hashItem->debugData = Clay__DebugElementDataArray_Add(&context->debugElementData, CLAY__INIT(Clay__DebugElementData) CLAY__DEFAULT_STRUCT); + if (hashItemPrevious != -1) { + Clay__LayoutElementHashMapItemArray_Get(&context->layoutElementsHashMapInternal, hashItemPrevious)->nextIndex = (int32_t)context->layoutElementsHashMapInternal.length - 1; + } else { + context->layoutElementsHashMap.internalArray[hashBucket] = (int32_t)context->layoutElementsHashMapInternal.length - 1; + } + return hashItem; +} + +Clay_LayoutElementHashMapItem *Clay__GetHashMapItem(uint32_t id) { + Clay_Context* context = Clay_GetCurrentContext(); + uint32_t hashBucket = id % context->layoutElementsHashMap.capacity; + int32_t elementIndex = context->layoutElementsHashMap.internalArray[hashBucket]; + while (elementIndex != -1) { + Clay_LayoutElementHashMapItem *hashEntry = Clay__LayoutElementHashMapItemArray_Get(&context->layoutElementsHashMapInternal, elementIndex); + if (hashEntry->elementId.id == id) { + return hashEntry; + } + elementIndex = hashEntry->nextIndex; + } + return &Clay_LayoutElementHashMapItem_DEFAULT; +} + +Clay_ElementId Clay__GenerateIdForAnonymousElement(Clay_LayoutElement *openLayoutElement) { + Clay_Context* context = Clay_GetCurrentContext(); + Clay_LayoutElement *parentElement = Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&context->openLayoutElementStack, context->openLayoutElementStack.length - 2)); + uint32_t offset = parentElement->childrenOrTextContent.children.length + parentElement->floatingChildrenCount; + Clay_ElementId elementId = Clay__HashNumber(offset, parentElement->id); + openLayoutElement->id = elementId.id; + Clay__AddHashMapItem(elementId, openLayoutElement); + Clay__StringArray_Add(&context->layoutElementIdStrings, elementId.stringId); + return elementId; +} + +bool Clay__ElementHasConfig(Clay_LayoutElement *layoutElement, Clay__ElementConfigType type) { + for (int32_t i = 0; i < layoutElement->elementConfigs.length; i++) { + if (Clay__ElementConfigArraySlice_Get(&layoutElement->elementConfigs, i)->type == type) { + return true; + } + } + return false; +} + +void Clay__UpdateAspectRatioBox(Clay_LayoutElement *layoutElement) { + for (int32_t j = 0; j < layoutElement->elementConfigs.length; j++) { + Clay_ElementConfig *config = Clay__ElementConfigArraySlice_Get(&layoutElement->elementConfigs, j); + if (config->type == CLAY__ELEMENT_CONFIG_TYPE_ASPECT) { + Clay_AspectRatioElementConfig *aspectConfig = config->config.aspectRatioElementConfig; + if (aspectConfig->aspectRatio == 0) { + break; + } + if (layoutElement->dimensions.width == 0 && layoutElement->dimensions.height != 0) { + layoutElement->dimensions.width = layoutElement->dimensions.height * aspectConfig->aspectRatio; + } else if (layoutElement->dimensions.width != 0 && layoutElement->dimensions.height == 0) { + layoutElement->dimensions.height = layoutElement->dimensions.width * (1 / aspectConfig->aspectRatio); + } + break; + } + } +} + +void Clay__CloseElement(void) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->booleanWarnings.maxElementsExceeded) { + return; + } + Clay_LayoutElement *openLayoutElement = Clay__GetOpenLayoutElement(); + Clay_LayoutConfig *layoutConfig = openLayoutElement->layoutConfig; + if (!layoutConfig) { + openLayoutElement->layoutConfig = &Clay_LayoutConfig_DEFAULT; + layoutConfig = &Clay_LayoutConfig_DEFAULT; + } + bool elementHasClipHorizontal = false; + bool elementHasClipVertical = false; + for (int32_t i = 0; i < openLayoutElement->elementConfigs.length; i++) { + Clay_ElementConfig *config = Clay__ElementConfigArraySlice_Get(&openLayoutElement->elementConfigs, i); + if (config->type == CLAY__ELEMENT_CONFIG_TYPE_CLIP) { + elementHasClipHorizontal = config->config.clipElementConfig->horizontal; + elementHasClipVertical = config->config.clipElementConfig->vertical; + context->openClipElementStack.length--; + break; + } else if (config->type == CLAY__ELEMENT_CONFIG_TYPE_FLOATING) { + context->openClipElementStack.length--; + } + } + + float leftRightPadding = (float)(layoutConfig->padding.left + layoutConfig->padding.right); + float topBottomPadding = (float)(layoutConfig->padding.top + layoutConfig->padding.bottom); + + // Attach children to the current open element + openLayoutElement->childrenOrTextContent.children.elements = &context->layoutElementChildren.internalArray[context->layoutElementChildren.length]; + if (layoutConfig->layoutDirection == CLAY_LEFT_TO_RIGHT) { + openLayoutElement->dimensions.width = leftRightPadding; + openLayoutElement->minDimensions.width = leftRightPadding; + for (int32_t i = 0; i < openLayoutElement->childrenOrTextContent.children.length; i++) { + int32_t childIndex = Clay__int32_tArray_GetValue(&context->layoutElementChildrenBuffer, (int)context->layoutElementChildrenBuffer.length - openLayoutElement->childrenOrTextContent.children.length + i); + Clay_LayoutElement *child = Clay_LayoutElementArray_Get(&context->layoutElements, childIndex); + openLayoutElement->dimensions.width += child->dimensions.width; + openLayoutElement->dimensions.height = CLAY__MAX(openLayoutElement->dimensions.height, child->dimensions.height + topBottomPadding); + // Minimum size of child elements doesn't matter to clip containers as they can shrink and hide their contents + if (!elementHasClipHorizontal) { + openLayoutElement->minDimensions.width += child->minDimensions.width; + } + if (!elementHasClipVertical) { + openLayoutElement->minDimensions.height = CLAY__MAX(openLayoutElement->minDimensions.height, child->minDimensions.height + topBottomPadding); + } + Clay__int32_tArray_Add(&context->layoutElementChildren, childIndex); + } + float childGap = (float)(CLAY__MAX(openLayoutElement->childrenOrTextContent.children.length - 1, 0) * layoutConfig->childGap); + openLayoutElement->dimensions.width += childGap; + if (!elementHasClipHorizontal) { + openLayoutElement->minDimensions.width += childGap; + } + } + else if (layoutConfig->layoutDirection == CLAY_TOP_TO_BOTTOM) { + openLayoutElement->dimensions.height = topBottomPadding; + openLayoutElement->minDimensions.height = topBottomPadding; + for (int32_t i = 0; i < openLayoutElement->childrenOrTextContent.children.length; i++) { + int32_t childIndex = Clay__int32_tArray_GetValue(&context->layoutElementChildrenBuffer, (int)context->layoutElementChildrenBuffer.length - openLayoutElement->childrenOrTextContent.children.length + i); + Clay_LayoutElement *child = Clay_LayoutElementArray_Get(&context->layoutElements, childIndex); + openLayoutElement->dimensions.height += child->dimensions.height; + openLayoutElement->dimensions.width = CLAY__MAX(openLayoutElement->dimensions.width, child->dimensions.width + leftRightPadding); + // Minimum size of child elements doesn't matter to clip containers as they can shrink and hide their contents + if (!elementHasClipVertical) { + openLayoutElement->minDimensions.height += child->minDimensions.height; + } + if (!elementHasClipHorizontal) { + openLayoutElement->minDimensions.width = CLAY__MAX(openLayoutElement->minDimensions.width, child->minDimensions.width + leftRightPadding); + } + Clay__int32_tArray_Add(&context->layoutElementChildren, childIndex); + } + float childGap = (float)(CLAY__MAX(openLayoutElement->childrenOrTextContent.children.length - 1, 0) * layoutConfig->childGap); + openLayoutElement->dimensions.height += childGap; + if (!elementHasClipVertical) { + openLayoutElement->minDimensions.height += childGap; + } + } + + context->layoutElementChildrenBuffer.length -= openLayoutElement->childrenOrTextContent.children.length; + + // Clamp element min and max width to the values configured in the layout + if (layoutConfig->sizing.width.type != CLAY__SIZING_TYPE_PERCENT) { + if (layoutConfig->sizing.width.size.minMax.max <= 0) { // Set the max size if the user didn't specify, makes calculations easier + layoutConfig->sizing.width.size.minMax.max = CLAY__MAXFLOAT; + } + openLayoutElement->dimensions.width = CLAY__MIN(CLAY__MAX(openLayoutElement->dimensions.width, layoutConfig->sizing.width.size.minMax.min), layoutConfig->sizing.width.size.minMax.max); + openLayoutElement->minDimensions.width = CLAY__MIN(CLAY__MAX(openLayoutElement->minDimensions.width, layoutConfig->sizing.width.size.minMax.min), layoutConfig->sizing.width.size.minMax.max); + } else { + openLayoutElement->dimensions.width = 0; + } + + // Clamp element min and max height to the values configured in the layout + if (layoutConfig->sizing.height.type != CLAY__SIZING_TYPE_PERCENT) { + if (layoutConfig->sizing.height.size.minMax.max <= 0) { // Set the max size if the user didn't specify, makes calculations easier + layoutConfig->sizing.height.size.minMax.max = CLAY__MAXFLOAT; + } + openLayoutElement->dimensions.height = CLAY__MIN(CLAY__MAX(openLayoutElement->dimensions.height, layoutConfig->sizing.height.size.minMax.min), layoutConfig->sizing.height.size.minMax.max); + openLayoutElement->minDimensions.height = CLAY__MIN(CLAY__MAX(openLayoutElement->minDimensions.height, layoutConfig->sizing.height.size.minMax.min), layoutConfig->sizing.height.size.minMax.max); + } else { + openLayoutElement->dimensions.height = 0; + } + + Clay__UpdateAspectRatioBox(openLayoutElement); + + bool elementIsFloating = Clay__ElementHasConfig(openLayoutElement, CLAY__ELEMENT_CONFIG_TYPE_FLOATING); + + // Close the currently open element + int32_t closingElementIndex = Clay__int32_tArray_RemoveSwapback(&context->openLayoutElementStack, (int)context->openLayoutElementStack.length - 1); + + // Get the currently open parent + openLayoutElement = Clay__GetOpenLayoutElement(); + + if (context->openLayoutElementStack.length > 1) { + if(elementIsFloating) { + openLayoutElement->floatingChildrenCount++; + return; + } + openLayoutElement->childrenOrTextContent.children.length++; + Clay__int32_tArray_Add(&context->layoutElementChildrenBuffer, closingElementIndex); + } +} + +bool Clay__MemCmp(const char *s1, const char *s2, int32_t length); +#if !defined(CLAY_DISABLE_SIMD) && (defined(__x86_64__) || defined(_M_X64) || defined(_M_AMD64)) + bool Clay__MemCmp(const char *s1, const char *s2, int32_t length) { + while (length >= 16) { + __m128i v1 = _mm_loadu_si128((const __m128i *)s1); + __m128i v2 = _mm_loadu_si128((const __m128i *)s2); + + if (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) != 0xFFFF) { // If any byte differs + return false; + } + + s1 += 16; + s2 += 16; + length -= 16; + } + + // Handle remaining bytes + while (length--) { + if (*s1 != *s2) { + return false; + } + s1++; + s2++; + } + + return true; + } +#elif !defined(CLAY_DISABLE_SIMD) && defined(__aarch64__) + bool Clay__MemCmp(const char *s1, const char *s2, int32_t length) { + while (length >= 16) { + uint8x16_t v1 = vld1q_u8((const uint8_t *)s1); + uint8x16_t v2 = vld1q_u8((const uint8_t *)s2); + + // Compare vectors + if (vminvq_u32(vreinterpretq_u32_u8(vceqq_u8(v1, v2))) != 0xFFFFFFFF) { // If there's a difference + return false; + } + + s1 += 16; + s2 += 16; + length -= 16; + } + + // Handle remaining bytes + while (length--) { + if (*s1 != *s2) { + return false; + } + s1++; + s2++; + } + + return true; + } +#else + bool Clay__MemCmp(const char *s1, const char *s2, int32_t length) { + for (int32_t i = 0; i < length; i++) { + if (s1[i] != s2[i]) { + return false; + } + } + return true; + } +#endif + +void Clay__OpenElement(void) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->layoutElements.length == context->layoutElements.capacity - 1 || context->booleanWarnings.maxElementsExceeded) { + context->booleanWarnings.maxElementsExceeded = true; + return; + } + Clay_LayoutElement layoutElement = CLAY__DEFAULT_STRUCT; + Clay_LayoutElement* openLayoutElement = Clay_LayoutElementArray_Add(&context->layoutElements, layoutElement); + Clay__int32_tArray_Add(&context->openLayoutElementStack, context->layoutElements.length - 1); + Clay__GenerateIdForAnonymousElement(openLayoutElement); + if (context->openClipElementStack.length > 0) { + Clay__int32_tArray_Set(&context->layoutElementClipElementIds, context->layoutElements.length - 1, Clay__int32_tArray_GetValue(&context->openClipElementStack, (int)context->openClipElementStack.length - 1)); + } else { + Clay__int32_tArray_Set(&context->layoutElementClipElementIds, context->layoutElements.length - 1, 0); + } +} + +void Clay__OpenElementWithId(Clay_ElementId elementId) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->layoutElements.length == context->layoutElements.capacity - 1 || context->booleanWarnings.maxElementsExceeded) { + context->booleanWarnings.maxElementsExceeded = true; + return; + } + Clay_LayoutElement layoutElement = CLAY__DEFAULT_STRUCT; + layoutElement.id = elementId.id; + Clay_LayoutElement * openLayoutElement = Clay_LayoutElementArray_Add(&context->layoutElements, layoutElement); + Clay__int32_tArray_Add(&context->openLayoutElementStack, context->layoutElements.length - 1); + Clay__AddHashMapItem(elementId, openLayoutElement); + Clay__StringArray_Add(&context->layoutElementIdStrings, elementId.stringId); + if (context->openClipElementStack.length > 0) { + Clay__int32_tArray_Set(&context->layoutElementClipElementIds, context->layoutElements.length - 1, Clay__int32_tArray_GetValue(&context->openClipElementStack, (int)context->openClipElementStack.length - 1)); + } else { + Clay__int32_tArray_Set(&context->layoutElementClipElementIds, context->layoutElements.length - 1, 0); + } +} + +void Clay__OpenTextElement(Clay_String text, Clay_TextElementConfig *textConfig) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->layoutElements.length == context->layoutElements.capacity - 1 || context->booleanWarnings.maxElementsExceeded) { + context->booleanWarnings.maxElementsExceeded = true; + return; + } + Clay_LayoutElement *parentElement = Clay__GetOpenLayoutElement(); + + Clay_LayoutElement layoutElement = CLAY__DEFAULT_STRUCT; + Clay_LayoutElement *textElement = Clay_LayoutElementArray_Add(&context->layoutElements, layoutElement); + if (context->openClipElementStack.length > 0) { + Clay__int32_tArray_Set(&context->layoutElementClipElementIds, context->layoutElements.length - 1, Clay__int32_tArray_GetValue(&context->openClipElementStack, (int)context->openClipElementStack.length - 1)); + } else { + Clay__int32_tArray_Set(&context->layoutElementClipElementIds, context->layoutElements.length - 1, 0); + } + + Clay__int32_tArray_Add(&context->layoutElementChildrenBuffer, context->layoutElements.length - 1); + Clay__MeasureTextCacheItem *textMeasured = Clay__MeasureTextCached(&text, textConfig); + Clay_ElementId elementId = Clay__HashNumber(parentElement->childrenOrTextContent.children.length + parentElement->floatingChildrenCount, parentElement->id); + textElement->id = elementId.id; + Clay__AddHashMapItem(elementId, textElement); + Clay__StringArray_Add(&context->layoutElementIdStrings, elementId.stringId); + Clay_Dimensions textDimensions = { .width = textMeasured->unwrappedDimensions.width, .height = textConfig->lineHeight > 0 ? (float)textConfig->lineHeight : textMeasured->unwrappedDimensions.height }; + textElement->dimensions = textDimensions; + textElement->minDimensions = CLAY__INIT(Clay_Dimensions) { .width = textMeasured->minWidth, .height = textDimensions.height }; + textElement->childrenOrTextContent.textElementData = Clay__TextElementDataArray_Add(&context->textElementData, CLAY__INIT(Clay__TextElementData) { .text = text, .preferredDimensions = textMeasured->unwrappedDimensions, .elementIndex = context->layoutElements.length - 1 }); + textElement->elementConfigs = CLAY__INIT(Clay__ElementConfigArraySlice) { + .length = 1, + .internalArray = Clay__ElementConfigArray_Add(&context->elementConfigs, CLAY__INIT(Clay_ElementConfig) { .type = CLAY__ELEMENT_CONFIG_TYPE_TEXT, .config = { .textElementConfig = textConfig }}) + }; + textElement->layoutConfig = &CLAY_LAYOUT_DEFAULT; + parentElement->childrenOrTextContent.children.length++; +} + +void Clay__ConfigureOpenElementPtr(const Clay_ElementDeclaration *declaration) { + Clay_Context* context = Clay_GetCurrentContext(); + Clay_LayoutElement *openLayoutElement = Clay__GetOpenLayoutElement(); + openLayoutElement->layoutConfig = Clay__StoreLayoutConfig(declaration->layout); + if ((declaration->layout.sizing.width.type == CLAY__SIZING_TYPE_PERCENT && declaration->layout.sizing.width.size.percent > 1) || (declaration->layout.sizing.height.type == CLAY__SIZING_TYPE_PERCENT && declaration->layout.sizing.height.size.percent > 1)) { + context->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_PERCENTAGE_OVER_1, + .errorText = CLAY_STRING("An element was configured with CLAY_SIZING_PERCENT, but the provided percentage value was over 1.0. Clay expects a value between 0 and 1, i.e. 20% is 0.2."), + .userData = context->errorHandler.userData }); + } + + openLayoutElement->elementConfigs.internalArray = &context->elementConfigs.internalArray[context->elementConfigs.length]; + Clay_SharedElementConfig *sharedConfig = NULL; + if (declaration->backgroundColor.a > 0) { + sharedConfig = Clay__StoreSharedElementConfig(CLAY__INIT(Clay_SharedElementConfig) { .backgroundColor = declaration->backgroundColor }); + Clay__AttachElementConfig(CLAY__INIT(Clay_ElementConfigUnion) { .sharedElementConfig = sharedConfig }, CLAY__ELEMENT_CONFIG_TYPE_SHARED); + } + if (!Clay__MemCmp((char *)(&declaration->cornerRadius), (char *)(&Clay__CornerRadius_DEFAULT), sizeof(Clay_CornerRadius))) { + if (sharedConfig) { + sharedConfig->cornerRadius = declaration->cornerRadius; + } else { + sharedConfig = Clay__StoreSharedElementConfig(CLAY__INIT(Clay_SharedElementConfig) { .cornerRadius = declaration->cornerRadius }); + Clay__AttachElementConfig(CLAY__INIT(Clay_ElementConfigUnion) { .sharedElementConfig = sharedConfig }, CLAY__ELEMENT_CONFIG_TYPE_SHARED); + } + } + if (declaration->userData != 0) { + if (sharedConfig) { + sharedConfig->userData = declaration->userData; + } else { + sharedConfig = Clay__StoreSharedElementConfig(CLAY__INIT(Clay_SharedElementConfig) { .userData = declaration->userData }); + Clay__AttachElementConfig(CLAY__INIT(Clay_ElementConfigUnion) { .sharedElementConfig = sharedConfig }, CLAY__ELEMENT_CONFIG_TYPE_SHARED); + } + } + if (declaration->image.imageData) { + Clay__AttachElementConfig(CLAY__INIT(Clay_ElementConfigUnion) { .imageElementConfig = Clay__StoreImageElementConfig(declaration->image) }, CLAY__ELEMENT_CONFIG_TYPE_IMAGE); + } + if (declaration->aspectRatio.aspectRatio > 0) { + Clay__AttachElementConfig(CLAY__INIT(Clay_ElementConfigUnion) { .aspectRatioElementConfig = Clay__StoreAspectRatioElementConfig(declaration->aspectRatio) }, CLAY__ELEMENT_CONFIG_TYPE_ASPECT); + Clay__int32_tArray_Add(&context->aspectRatioElementIndexes, context->layoutElements.length - 1); + } + if (declaration->floating.attachTo != CLAY_ATTACH_TO_NONE) { + Clay_FloatingElementConfig floatingConfig = declaration->floating; + // This looks dodgy but because of the auto generated root element the depth of the tree will always be at least 2 here + Clay_LayoutElement *hierarchicalParent = Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&context->openLayoutElementStack, context->openLayoutElementStack.length - 2)); + if (hierarchicalParent) { + uint32_t clipElementId = 0; + if (declaration->floating.attachTo == CLAY_ATTACH_TO_PARENT) { + // Attach to the element's direct hierarchical parent + floatingConfig.parentId = hierarchicalParent->id; + if (context->openClipElementStack.length > 0) { + clipElementId = Clay__int32_tArray_GetValue(&context->openClipElementStack, (int)context->openClipElementStack.length - 1); + } + } else if (declaration->floating.attachTo == CLAY_ATTACH_TO_ELEMENT_WITH_ID) { + Clay_LayoutElementHashMapItem *parentItem = Clay__GetHashMapItem(floatingConfig.parentId); + if (parentItem == &Clay_LayoutElementHashMapItem_DEFAULT) { + context->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_FLOATING_CONTAINER_PARENT_NOT_FOUND, + .errorText = CLAY_STRING("A floating element was declared with a parentId, but no element with that ID was found."), + .userData = context->errorHandler.userData }); + } else { + clipElementId = Clay__int32_tArray_GetValue(&context->layoutElementClipElementIds, (int32_t)(parentItem->layoutElement - context->layoutElements.internalArray)); + } + } else if (declaration->floating.attachTo == CLAY_ATTACH_TO_ROOT) { + floatingConfig.parentId = Clay__HashString(CLAY_STRING("Clay__RootContainer"), 0).id; + } + if (declaration->floating.clipTo == CLAY_CLIP_TO_NONE) { + clipElementId = 0; + } + int32_t currentElementIndex = Clay__int32_tArray_GetValue(&context->openLayoutElementStack, context->openLayoutElementStack.length - 1); + Clay__int32_tArray_Set(&context->layoutElementClipElementIds, currentElementIndex, clipElementId); + Clay__int32_tArray_Add(&context->openClipElementStack, clipElementId); + Clay__LayoutElementTreeRootArray_Add(&context->layoutElementTreeRoots, CLAY__INIT(Clay__LayoutElementTreeRoot) { + .layoutElementIndex = Clay__int32_tArray_GetValue(&context->openLayoutElementStack, context->openLayoutElementStack.length - 1), + .parentId = floatingConfig.parentId, + .clipElementId = clipElementId, + .zIndex = floatingConfig.zIndex, + }); + Clay__AttachElementConfig(CLAY__INIT(Clay_ElementConfigUnion) { .floatingElementConfig = Clay__StoreFloatingElementConfig(floatingConfig) }, CLAY__ELEMENT_CONFIG_TYPE_FLOATING); + } + } + if (declaration->custom.customData) { + Clay__AttachElementConfig(CLAY__INIT(Clay_ElementConfigUnion) { .customElementConfig = Clay__StoreCustomElementConfig(declaration->custom) }, CLAY__ELEMENT_CONFIG_TYPE_CUSTOM); + } + + if (declaration->clip.horizontal | declaration->clip.vertical) { + Clay__AttachElementConfig(CLAY__INIT(Clay_ElementConfigUnion) { .clipElementConfig = Clay__StoreClipElementConfig(declaration->clip) }, CLAY__ELEMENT_CONFIG_TYPE_CLIP); + Clay__int32_tArray_Add(&context->openClipElementStack, (int)openLayoutElement->id); + // Retrieve or create cached data to track scroll position across frames + Clay__ScrollContainerDataInternal *scrollOffset = CLAY__NULL; + for (int32_t i = 0; i < context->scrollContainerDatas.length; i++) { + Clay__ScrollContainerDataInternal *mapping = Clay__ScrollContainerDataInternalArray_Get(&context->scrollContainerDatas, i); + if (openLayoutElement->id == mapping->elementId) { + scrollOffset = mapping; + scrollOffset->layoutElement = openLayoutElement; + scrollOffset->openThisFrame = true; + } + } + if (!scrollOffset) { + scrollOffset = Clay__ScrollContainerDataInternalArray_Add(&context->scrollContainerDatas, CLAY__INIT(Clay__ScrollContainerDataInternal){.layoutElement = openLayoutElement, .scrollOrigin = {-1,-1}, .elementId = openLayoutElement->id, .openThisFrame = true}); + } + if (context->externalScrollHandlingEnabled) { + scrollOffset->scrollPosition = Clay__QueryScrollOffset(scrollOffset->elementId, context->queryScrollOffsetUserData); + } + } + if (!Clay__MemCmp((char *)(&declaration->border.width), (char *)(&Clay__BorderWidth_DEFAULT), sizeof(Clay_BorderWidth))) { + Clay__AttachElementConfig(CLAY__INIT(Clay_ElementConfigUnion) { .borderElementConfig = Clay__StoreBorderElementConfig(declaration->border) }, CLAY__ELEMENT_CONFIG_TYPE_BORDER); + } +} + +void Clay__ConfigureOpenElement(const Clay_ElementDeclaration declaration) { + Clay__ConfigureOpenElementPtr(&declaration); +} + +void Clay__InitializeEphemeralMemory(Clay_Context* context) { + int32_t maxElementCount = context->maxElementCount; + // Ephemeral Memory - reset every frame + Clay_Arena *arena = &context->internalArena; + arena->nextAllocation = context->arenaResetOffset; + + context->layoutElementChildrenBuffer = Clay__int32_tArray_Allocate_Arena(maxElementCount, arena); + context->layoutElements = Clay_LayoutElementArray_Allocate_Arena(maxElementCount, arena); + context->warnings = Clay__WarningArray_Allocate_Arena(100, arena); + + context->layoutConfigs = Clay__LayoutConfigArray_Allocate_Arena(maxElementCount, arena); + context->elementConfigs = Clay__ElementConfigArray_Allocate_Arena(maxElementCount, arena); + context->textElementConfigs = Clay__TextElementConfigArray_Allocate_Arena(maxElementCount, arena); + context->aspectRatioElementConfigs = Clay__AspectRatioElementConfigArray_Allocate_Arena(maxElementCount, arena); + context->imageElementConfigs = Clay__ImageElementConfigArray_Allocate_Arena(maxElementCount, arena); + context->floatingElementConfigs = Clay__FloatingElementConfigArray_Allocate_Arena(maxElementCount, arena); + context->clipElementConfigs = Clay__ClipElementConfigArray_Allocate_Arena(maxElementCount, arena); + context->customElementConfigs = Clay__CustomElementConfigArray_Allocate_Arena(maxElementCount, arena); + context->borderElementConfigs = Clay__BorderElementConfigArray_Allocate_Arena(maxElementCount, arena); + context->sharedElementConfigs = Clay__SharedElementConfigArray_Allocate_Arena(maxElementCount, arena); + + context->layoutElementIdStrings = Clay__StringArray_Allocate_Arena(maxElementCount, arena); + context->wrappedTextLines = Clay__WrappedTextLineArray_Allocate_Arena(maxElementCount, arena); + context->layoutElementTreeNodeArray1 = Clay__LayoutElementTreeNodeArray_Allocate_Arena(maxElementCount, arena); + context->layoutElementTreeRoots = Clay__LayoutElementTreeRootArray_Allocate_Arena(maxElementCount, arena); + context->layoutElementChildren = Clay__int32_tArray_Allocate_Arena(maxElementCount, arena); + context->openLayoutElementStack = Clay__int32_tArray_Allocate_Arena(maxElementCount, arena); + context->textElementData = Clay__TextElementDataArray_Allocate_Arena(maxElementCount, arena); + context->aspectRatioElementIndexes = Clay__int32_tArray_Allocate_Arena(maxElementCount, arena); + context->renderCommands = Clay_RenderCommandArray_Allocate_Arena(maxElementCount, arena); + context->treeNodeVisited = Clay__boolArray_Allocate_Arena(maxElementCount, arena); + context->treeNodeVisited.length = context->treeNodeVisited.capacity; // This array is accessed directly rather than behaving as a list + context->openClipElementStack = Clay__int32_tArray_Allocate_Arena(maxElementCount, arena); + context->reusableElementIndexBuffer = Clay__int32_tArray_Allocate_Arena(maxElementCount, arena); + context->layoutElementClipElementIds = Clay__int32_tArray_Allocate_Arena(maxElementCount, arena); + context->dynamicStringData = Clay__charArray_Allocate_Arena(maxElementCount, arena); +} + +void Clay__InitializePersistentMemory(Clay_Context* context) { + // Persistent memory - initialized once and not reset + int32_t maxElementCount = context->maxElementCount; + int32_t maxMeasureTextCacheWordCount = context->maxMeasureTextCacheWordCount; + Clay_Arena *arena = &context->internalArena; + + context->scrollContainerDatas = Clay__ScrollContainerDataInternalArray_Allocate_Arena(100, arena); + context->layoutElementsHashMapInternal = Clay__LayoutElementHashMapItemArray_Allocate_Arena(maxElementCount, arena); + context->layoutElementsHashMap = Clay__int32_tArray_Allocate_Arena(maxElementCount, arena); + context->measureTextHashMapInternal = Clay__MeasureTextCacheItemArray_Allocate_Arena(maxElementCount, arena); + context->measureTextHashMapInternalFreeList = Clay__int32_tArray_Allocate_Arena(maxElementCount, arena); + context->measuredWordsFreeList = Clay__int32_tArray_Allocate_Arena(maxMeasureTextCacheWordCount, arena); + context->measureTextHashMap = Clay__int32_tArray_Allocate_Arena(maxElementCount, arena); + context->measuredWords = Clay__MeasuredWordArray_Allocate_Arena(maxMeasureTextCacheWordCount, arena); + context->pointerOverIds = Clay_ElementIdArray_Allocate_Arena(maxElementCount, arena); + context->debugElementData = Clay__DebugElementDataArray_Allocate_Arena(maxElementCount, arena); + context->arenaResetOffset = arena->nextAllocation; +} + +const float CLAY__EPSILON = 0.01; + +bool Clay__FloatEqual(float left, float right) { + float subtracted = left - right; + return subtracted < CLAY__EPSILON && subtracted > -CLAY__EPSILON; +} + +void Clay__SizeContainersAlongAxis(bool xAxis) { + Clay_Context* context = Clay_GetCurrentContext(); + Clay__int32_tArray bfsBuffer = context->layoutElementChildrenBuffer; + Clay__int32_tArray resizableContainerBuffer = context->openLayoutElementStack; + for (int32_t rootIndex = 0; rootIndex < context->layoutElementTreeRoots.length; ++rootIndex) { + bfsBuffer.length = 0; + Clay__LayoutElementTreeRoot *root = Clay__LayoutElementTreeRootArray_Get(&context->layoutElementTreeRoots, rootIndex); + Clay_LayoutElement *rootElement = Clay_LayoutElementArray_Get(&context->layoutElements, (int)root->layoutElementIndex); + Clay__int32_tArray_Add(&bfsBuffer, (int32_t)root->layoutElementIndex); + + // Size floating containers to their parents + if (Clay__ElementHasConfig(rootElement, CLAY__ELEMENT_CONFIG_TYPE_FLOATING)) { + Clay_FloatingElementConfig *floatingElementConfig = Clay__FindElementConfigWithType(rootElement, CLAY__ELEMENT_CONFIG_TYPE_FLOATING).floatingElementConfig; + Clay_LayoutElementHashMapItem *parentItem = Clay__GetHashMapItem(floatingElementConfig->parentId); + if (parentItem && parentItem != &Clay_LayoutElementHashMapItem_DEFAULT) { + Clay_LayoutElement *parentLayoutElement = parentItem->layoutElement; + switch (rootElement->layoutConfig->sizing.width.type) { + case CLAY__SIZING_TYPE_GROW: { + rootElement->dimensions.width = parentLayoutElement->dimensions.width; + break; + } + case CLAY__SIZING_TYPE_PERCENT: { + rootElement->dimensions.width = parentLayoutElement->dimensions.width * rootElement->layoutConfig->sizing.width.size.percent; + break; + } + default: break; + } + switch (rootElement->layoutConfig->sizing.height.type) { + case CLAY__SIZING_TYPE_GROW: { + rootElement->dimensions.height = parentLayoutElement->dimensions.height; + break; + } + case CLAY__SIZING_TYPE_PERCENT: { + rootElement->dimensions.height = parentLayoutElement->dimensions.height * rootElement->layoutConfig->sizing.height.size.percent; + break; + } + default: break; + } + } + } + + if (rootElement->layoutConfig->sizing.width.type != CLAY__SIZING_TYPE_PERCENT) { + rootElement->dimensions.width = CLAY__MIN(CLAY__MAX(rootElement->dimensions.width, rootElement->layoutConfig->sizing.width.size.minMax.min), rootElement->layoutConfig->sizing.width.size.minMax.max); + } + if (rootElement->layoutConfig->sizing.height.type != CLAY__SIZING_TYPE_PERCENT) { + rootElement->dimensions.height = CLAY__MIN(CLAY__MAX(rootElement->dimensions.height, rootElement->layoutConfig->sizing.height.size.minMax.min), rootElement->layoutConfig->sizing.height.size.minMax.max); + } + + for (int32_t i = 0; i < bfsBuffer.length; ++i) { + int32_t parentIndex = Clay__int32_tArray_GetValue(&bfsBuffer, i); + Clay_LayoutElement *parent = Clay_LayoutElementArray_Get(&context->layoutElements, parentIndex); + Clay_LayoutConfig *parentStyleConfig = parent->layoutConfig; + int32_t growContainerCount = 0; + float parentSize = xAxis ? parent->dimensions.width : parent->dimensions.height; + float parentPadding = (float)(xAxis ? (parent->layoutConfig->padding.left + parent->layoutConfig->padding.right) : (parent->layoutConfig->padding.top + parent->layoutConfig->padding.bottom)); + float innerContentSize = 0, totalPaddingAndChildGaps = parentPadding; + bool sizingAlongAxis = (xAxis && parentStyleConfig->layoutDirection == CLAY_LEFT_TO_RIGHT) || (!xAxis && parentStyleConfig->layoutDirection == CLAY_TOP_TO_BOTTOM); + resizableContainerBuffer.length = 0; + float parentChildGap = parentStyleConfig->childGap; + + for (int32_t childOffset = 0; childOffset < parent->childrenOrTextContent.children.length; childOffset++) { + int32_t childElementIndex = parent->childrenOrTextContent.children.elements[childOffset]; + Clay_LayoutElement *childElement = Clay_LayoutElementArray_Get(&context->layoutElements, childElementIndex); + Clay_SizingAxis childSizing = xAxis ? childElement->layoutConfig->sizing.width : childElement->layoutConfig->sizing.height; + float childSize = xAxis ? childElement->dimensions.width : childElement->dimensions.height; + + if (!Clay__ElementHasConfig(childElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT) && childElement->childrenOrTextContent.children.length > 0) { + Clay__int32_tArray_Add(&bfsBuffer, childElementIndex); + } + + if (childSizing.type != CLAY__SIZING_TYPE_PERCENT + && childSizing.type != CLAY__SIZING_TYPE_FIXED + && (!Clay__ElementHasConfig(childElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT) || (Clay__FindElementConfigWithType(childElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT).textElementConfig->wrapMode == CLAY_TEXT_WRAP_WORDS)) // todo too many loops +// && (xAxis || !Clay__ElementHasConfig(childElement, CLAY__ELEMENT_CONFIG_TYPE_ASPECT)) + ) { + Clay__int32_tArray_Add(&resizableContainerBuffer, childElementIndex); + } + + if (sizingAlongAxis) { + innerContentSize += (childSizing.type == CLAY__SIZING_TYPE_PERCENT ? 0 : childSize); + if (childSizing.type == CLAY__SIZING_TYPE_GROW) { + growContainerCount++; + } + if (childOffset > 0) { + innerContentSize += parentChildGap; // For children after index 0, the childAxisOffset is the gap from the previous child + totalPaddingAndChildGaps += parentChildGap; + } + } else { + innerContentSize = CLAY__MAX(childSize, innerContentSize); + } + } + + // Expand percentage containers to size + for (int32_t childOffset = 0; childOffset < parent->childrenOrTextContent.children.length; childOffset++) { + int32_t childElementIndex = parent->childrenOrTextContent.children.elements[childOffset]; + Clay_LayoutElement *childElement = Clay_LayoutElementArray_Get(&context->layoutElements, childElementIndex); + Clay_SizingAxis childSizing = xAxis ? childElement->layoutConfig->sizing.width : childElement->layoutConfig->sizing.height; + float *childSize = xAxis ? &childElement->dimensions.width : &childElement->dimensions.height; + if (childSizing.type == CLAY__SIZING_TYPE_PERCENT) { + *childSize = (parentSize - totalPaddingAndChildGaps) * childSizing.size.percent; + if (sizingAlongAxis) { + innerContentSize += *childSize; + } + Clay__UpdateAspectRatioBox(childElement); + } + } + + if (sizingAlongAxis) { + float sizeToDistribute = parentSize - parentPadding - innerContentSize; + // The content is too large, compress the children as much as possible + if (sizeToDistribute < 0) { + // If the parent clips content in this axis direction, don't compress children, just leave them alone + Clay_ClipElementConfig *clipElementConfig = Clay__FindElementConfigWithType(parent, CLAY__ELEMENT_CONFIG_TYPE_CLIP).clipElementConfig; + if (clipElementConfig) { + if (((xAxis && clipElementConfig->horizontal) || (!xAxis && clipElementConfig->vertical))) { + continue; + } + } + // Scrolling containers preferentially compress before others + while (sizeToDistribute < -CLAY__EPSILON && resizableContainerBuffer.length > 0) { + float largest = 0; + float secondLargest = 0; + float widthToAdd = sizeToDistribute; + for (int childIndex = 0; childIndex < resizableContainerBuffer.length; childIndex++) { + Clay_LayoutElement *child = Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&resizableContainerBuffer, childIndex)); + float childSize = xAxis ? child->dimensions.width : child->dimensions.height; + if (Clay__FloatEqual(childSize, largest)) { continue; } + if (childSize > largest) { + secondLargest = largest; + largest = childSize; + } + if (childSize < largest) { + secondLargest = CLAY__MAX(secondLargest, childSize); + widthToAdd = secondLargest - largest; + } + } + + widthToAdd = CLAY__MAX(widthToAdd, sizeToDistribute / resizableContainerBuffer.length); + + for (int childIndex = 0; childIndex < resizableContainerBuffer.length; childIndex++) { + Clay_LayoutElement *child = Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&resizableContainerBuffer, childIndex)); + float *childSize = xAxis ? &child->dimensions.width : &child->dimensions.height; + float minSize = xAxis ? child->minDimensions.width : child->minDimensions.height; + float previousWidth = *childSize; + if (Clay__FloatEqual(*childSize, largest)) { + *childSize += widthToAdd; + if (*childSize <= minSize) { + *childSize = minSize; + Clay__int32_tArray_RemoveSwapback(&resizableContainerBuffer, childIndex--); + } + sizeToDistribute -= (*childSize - previousWidth); + } + } + } + // The content is too small, allow SIZING_GROW containers to expand + } else if (sizeToDistribute > 0 && growContainerCount > 0) { + for (int childIndex = 0; childIndex < resizableContainerBuffer.length; childIndex++) { + Clay_LayoutElement *child = Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&resizableContainerBuffer, childIndex)); + Clay__SizingType childSizing = xAxis ? child->layoutConfig->sizing.width.type : child->layoutConfig->sizing.height.type; + if (childSizing != CLAY__SIZING_TYPE_GROW) { + Clay__int32_tArray_RemoveSwapback(&resizableContainerBuffer, childIndex--); + } + } + while (sizeToDistribute > CLAY__EPSILON && resizableContainerBuffer.length > 0) { + float smallest = CLAY__MAXFLOAT; + float secondSmallest = CLAY__MAXFLOAT; + float widthToAdd = sizeToDistribute; + for (int childIndex = 0; childIndex < resizableContainerBuffer.length; childIndex++) { + Clay_LayoutElement *child = Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&resizableContainerBuffer, childIndex)); + float childSize = xAxis ? child->dimensions.width : child->dimensions.height; + if (Clay__FloatEqual(childSize, smallest)) { continue; } + if (childSize < smallest) { + secondSmallest = smallest; + smallest = childSize; + } + if (childSize > smallest) { + secondSmallest = CLAY__MIN(secondSmallest, childSize); + widthToAdd = secondSmallest - smallest; + } + } + + widthToAdd = CLAY__MIN(widthToAdd, sizeToDistribute / resizableContainerBuffer.length); + + for (int childIndex = 0; childIndex < resizableContainerBuffer.length; childIndex++) { + Clay_LayoutElement *child = Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&resizableContainerBuffer, childIndex)); + float *childSize = xAxis ? &child->dimensions.width : &child->dimensions.height; + float maxSize = xAxis ? child->layoutConfig->sizing.width.size.minMax.max : child->layoutConfig->sizing.height.size.minMax.max; + float previousWidth = *childSize; + if (Clay__FloatEqual(*childSize, smallest)) { + *childSize += widthToAdd; + if (*childSize >= maxSize) { + *childSize = maxSize; + Clay__int32_tArray_RemoveSwapback(&resizableContainerBuffer, childIndex--); + } + sizeToDistribute -= (*childSize - previousWidth); + } + } + } + } + // Sizing along the non layout axis ("off axis") + } else { + for (int32_t childOffset = 0; childOffset < resizableContainerBuffer.length; childOffset++) { + Clay_LayoutElement *childElement = Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&resizableContainerBuffer, childOffset)); + Clay_SizingAxis childSizing = xAxis ? childElement->layoutConfig->sizing.width : childElement->layoutConfig->sizing.height; + float minSize = xAxis ? childElement->minDimensions.width : childElement->minDimensions.height; + float *childSize = xAxis ? &childElement->dimensions.width : &childElement->dimensions.height; + + float maxSize = parentSize - parentPadding; + // If we're laying out the children of a scroll panel, grow containers expand to the size of the inner content, not the outer container + if (Clay__ElementHasConfig(parent, CLAY__ELEMENT_CONFIG_TYPE_CLIP)) { + Clay_ClipElementConfig *clipElementConfig = Clay__FindElementConfigWithType(parent, CLAY__ELEMENT_CONFIG_TYPE_CLIP).clipElementConfig; + if (((xAxis && clipElementConfig->horizontal) || (!xAxis && clipElementConfig->vertical))) { + maxSize = CLAY__MAX(maxSize, innerContentSize); + } + } + if (childSizing.type == CLAY__SIZING_TYPE_GROW) { + *childSize = CLAY__MIN(maxSize, childSizing.size.minMax.max); + } + *childSize = CLAY__MAX(minSize, CLAY__MIN(*childSize, maxSize)); + } + } + } + } +} + +Clay_String Clay__IntToString(int32_t integer) { + if (integer == 0) { + return CLAY__INIT(Clay_String) { .length = 1, .chars = "0" }; + } + Clay_Context* context = Clay_GetCurrentContext(); + char *chars = (char *)(context->dynamicStringData.internalArray + context->dynamicStringData.length); + int32_t length = 0; + int32_t sign = integer; + + if (integer < 0) { + integer = -integer; + } + while (integer > 0) { + chars[length++] = (char)(integer % 10 + '0'); + integer /= 10; + } + + if (sign < 0) { + chars[length++] = '-'; + } + + // Reverse the string to get the correct order + for (int32_t j = 0, k = length - 1; j < k; j++, k--) { + char temp = chars[j]; + chars[j] = chars[k]; + chars[k] = temp; + } + context->dynamicStringData.length += length; + return CLAY__INIT(Clay_String) { .length = length, .chars = chars }; +} + +void Clay__AddRenderCommand(Clay_RenderCommand renderCommand) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->renderCommands.length < context->renderCommands.capacity - 1) { + Clay_RenderCommandArray_Add(&context->renderCommands, renderCommand); + } else { + if (!context->booleanWarnings.maxRenderCommandsExceeded) { + context->booleanWarnings.maxRenderCommandsExceeded = true; + context->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_ELEMENTS_CAPACITY_EXCEEDED, + .errorText = CLAY_STRING("Clay ran out of capacity while attempting to create render commands. This is usually caused by a large amount of wrapping text elements while close to the max element capacity. Try using Clay_SetMaxElementCount() with a higher value."), + .userData = context->errorHandler.userData }); + } + } +} + +bool Clay__ElementIsOffscreen(Clay_BoundingBox *boundingBox) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->disableCulling) { + return false; + } + + return (boundingBox->x > (float)context->layoutDimensions.width) || + (boundingBox->y > (float)context->layoutDimensions.height) || + (boundingBox->x + boundingBox->width < 0) || + (boundingBox->y + boundingBox->height < 0); +} + +void Clay__CalculateFinalLayout(void) { + Clay_Context* context = Clay_GetCurrentContext(); + // Calculate sizing along the X axis + Clay__SizeContainersAlongAxis(true); + + // Wrap text + for (int32_t textElementIndex = 0; textElementIndex < context->textElementData.length; ++textElementIndex) { + Clay__TextElementData *textElementData = Clay__TextElementDataArray_Get(&context->textElementData, textElementIndex); + textElementData->wrappedLines = CLAY__INIT(Clay__WrappedTextLineArraySlice) { .length = 0, .internalArray = &context->wrappedTextLines.internalArray[context->wrappedTextLines.length] }; + Clay_LayoutElement *containerElement = Clay_LayoutElementArray_Get(&context->layoutElements, (int)textElementData->elementIndex); + Clay_TextElementConfig *textConfig = Clay__FindElementConfigWithType(containerElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT).textElementConfig; + Clay__MeasureTextCacheItem *measureTextCacheItem = Clay__MeasureTextCached(&textElementData->text, textConfig); + float lineWidth = 0; + float lineHeight = textConfig->lineHeight > 0 ? (float)textConfig->lineHeight : textElementData->preferredDimensions.height; + int32_t lineLengthChars = 0; + int32_t lineStartOffset = 0; + if (!measureTextCacheItem->containsNewlines && textElementData->preferredDimensions.width <= containerElement->dimensions.width) { + Clay__WrappedTextLineArray_Add(&context->wrappedTextLines, CLAY__INIT(Clay__WrappedTextLine) { containerElement->dimensions, textElementData->text }); + textElementData->wrappedLines.length++; + continue; + } + float spaceWidth = Clay__MeasureText(CLAY__INIT(Clay_StringSlice) { .length = 1, .chars = CLAY__SPACECHAR.chars, .baseChars = CLAY__SPACECHAR.chars }, textConfig, context->measureTextUserData).width; + int32_t wordIndex = measureTextCacheItem->measuredWordsStartIndex; + while (wordIndex != -1) { + if (context->wrappedTextLines.length > context->wrappedTextLines.capacity - 1) { + break; + } + Clay__MeasuredWord *measuredWord = Clay__MeasuredWordArray_Get(&context->measuredWords, wordIndex); + // Only word on the line is too large, just render it anyway + if (lineLengthChars == 0 && lineWidth + measuredWord->width > containerElement->dimensions.width) { + Clay__WrappedTextLineArray_Add(&context->wrappedTextLines, CLAY__INIT(Clay__WrappedTextLine) { { measuredWord->width, lineHeight }, { .length = measuredWord->length, .chars = &textElementData->text.chars[measuredWord->startOffset] } }); + textElementData->wrappedLines.length++; + wordIndex = measuredWord->next; + lineStartOffset = measuredWord->startOffset + measuredWord->length; + } + // measuredWord->length == 0 means a newline character + else if (measuredWord->length == 0 || lineWidth + measuredWord->width > containerElement->dimensions.width) { + // Wrapped text lines list has overflowed, just render out the line + bool finalCharIsSpace = textElementData->text.chars[CLAY__MAX(lineStartOffset + lineLengthChars - 1, 0)] == ' '; + Clay__WrappedTextLineArray_Add(&context->wrappedTextLines, CLAY__INIT(Clay__WrappedTextLine) { { lineWidth + (finalCharIsSpace ? -spaceWidth : 0), lineHeight }, { .length = lineLengthChars + (finalCharIsSpace ? -1 : 0), .chars = &textElementData->text.chars[lineStartOffset] } }); + textElementData->wrappedLines.length++; + if (lineLengthChars == 0 || measuredWord->length == 0) { + wordIndex = measuredWord->next; + } + lineWidth = 0; + lineLengthChars = 0; + lineStartOffset = measuredWord->startOffset; + } else { + lineWidth += measuredWord->width + textConfig->letterSpacing; + lineLengthChars += measuredWord->length; + wordIndex = measuredWord->next; + } + } + if (lineLengthChars > 0) { + Clay__WrappedTextLineArray_Add(&context->wrappedTextLines, CLAY__INIT(Clay__WrappedTextLine) { { lineWidth - textConfig->letterSpacing, lineHeight }, {.length = lineLengthChars, .chars = &textElementData->text.chars[lineStartOffset] } }); + textElementData->wrappedLines.length++; + } + containerElement->dimensions.height = lineHeight * (float)textElementData->wrappedLines.length; + } + + // Scale vertical heights according to aspect ratio + for (int32_t i = 0; i < context->aspectRatioElementIndexes.length; ++i) { + Clay_LayoutElement* aspectElement = Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&context->aspectRatioElementIndexes, i)); + Clay_AspectRatioElementConfig *config = Clay__FindElementConfigWithType(aspectElement, CLAY__ELEMENT_CONFIG_TYPE_ASPECT).aspectRatioElementConfig; + aspectElement->dimensions.height = (1 / config->aspectRatio) * aspectElement->dimensions.width; + aspectElement->layoutConfig->sizing.height.size.minMax.max = aspectElement->dimensions.height; + } + + // Propagate effect of text wrapping, aspect scaling etc. on height of parents + Clay__LayoutElementTreeNodeArray dfsBuffer = context->layoutElementTreeNodeArray1; + dfsBuffer.length = 0; + for (int32_t i = 0; i < context->layoutElementTreeRoots.length; ++i) { + Clay__LayoutElementTreeRoot *root = Clay__LayoutElementTreeRootArray_Get(&context->layoutElementTreeRoots, i); + context->treeNodeVisited.internalArray[dfsBuffer.length] = false; + Clay__LayoutElementTreeNodeArray_Add(&dfsBuffer, CLAY__INIT(Clay__LayoutElementTreeNode) { .layoutElement = Clay_LayoutElementArray_Get(&context->layoutElements, (int)root->layoutElementIndex) }); + } + while (dfsBuffer.length > 0) { + Clay__LayoutElementTreeNode *currentElementTreeNode = Clay__LayoutElementTreeNodeArray_Get(&dfsBuffer, (int)dfsBuffer.length - 1); + Clay_LayoutElement *currentElement = currentElementTreeNode->layoutElement; + if (!context->treeNodeVisited.internalArray[dfsBuffer.length - 1]) { + context->treeNodeVisited.internalArray[dfsBuffer.length - 1] = true; + // If the element has no children or is the container for a text element, don't bother inspecting it + if (Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT) || currentElement->childrenOrTextContent.children.length == 0) { + dfsBuffer.length--; + continue; + } + // Add the children to the DFS buffer (needs to be pushed in reverse so that stack traversal is in correct layout order) + for (int32_t i = 0; i < currentElement->childrenOrTextContent.children.length; i++) { + context->treeNodeVisited.internalArray[dfsBuffer.length] = false; + Clay__LayoutElementTreeNodeArray_Add(&dfsBuffer, CLAY__INIT(Clay__LayoutElementTreeNode) { .layoutElement = Clay_LayoutElementArray_Get(&context->layoutElements, currentElement->childrenOrTextContent.children.elements[i]) }); + } + continue; + } + dfsBuffer.length--; + + // DFS node has been visited, this is on the way back up to the root + Clay_LayoutConfig *layoutConfig = currentElement->layoutConfig; + if (layoutConfig->layoutDirection == CLAY_LEFT_TO_RIGHT) { + // Resize any parent containers that have grown in height along their non layout axis + for (int32_t j = 0; j < currentElement->childrenOrTextContent.children.length; ++j) { + Clay_LayoutElement *childElement = Clay_LayoutElementArray_Get(&context->layoutElements, currentElement->childrenOrTextContent.children.elements[j]); + float childHeightWithPadding = CLAY__MAX(childElement->dimensions.height + layoutConfig->padding.top + layoutConfig->padding.bottom, currentElement->dimensions.height); + currentElement->dimensions.height = CLAY__MIN(CLAY__MAX(childHeightWithPadding, layoutConfig->sizing.height.size.minMax.min), layoutConfig->sizing.height.size.minMax.max); + } + } else if (layoutConfig->layoutDirection == CLAY_TOP_TO_BOTTOM) { + // Resizing along the layout axis + float contentHeight = (float)(layoutConfig->padding.top + layoutConfig->padding.bottom); + for (int32_t j = 0; j < currentElement->childrenOrTextContent.children.length; ++j) { + Clay_LayoutElement *childElement = Clay_LayoutElementArray_Get(&context->layoutElements, currentElement->childrenOrTextContent.children.elements[j]); + contentHeight += childElement->dimensions.height; + } + contentHeight += (float)(CLAY__MAX(currentElement->childrenOrTextContent.children.length - 1, 0) * layoutConfig->childGap); + currentElement->dimensions.height = CLAY__MIN(CLAY__MAX(contentHeight, layoutConfig->sizing.height.size.minMax.min), layoutConfig->sizing.height.size.minMax.max); + } + } + + // Calculate sizing along the Y axis + Clay__SizeContainersAlongAxis(false); + + // Scale horizontal widths according to aspect ratio + for (int32_t i = 0; i < context->aspectRatioElementIndexes.length; ++i) { + Clay_LayoutElement* aspectElement = Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&context->aspectRatioElementIndexes, i)); + Clay_AspectRatioElementConfig *config = Clay__FindElementConfigWithType(aspectElement, CLAY__ELEMENT_CONFIG_TYPE_ASPECT).aspectRatioElementConfig; + aspectElement->dimensions.width = config->aspectRatio * aspectElement->dimensions.height; + } + + // Sort tree roots by z-index + int32_t sortMax = context->layoutElementTreeRoots.length - 1; + while (sortMax > 0) { // todo dumb bubble sort + for (int32_t i = 0; i < sortMax; ++i) { + Clay__LayoutElementTreeRoot current = *Clay__LayoutElementTreeRootArray_Get(&context->layoutElementTreeRoots, i); + Clay__LayoutElementTreeRoot next = *Clay__LayoutElementTreeRootArray_Get(&context->layoutElementTreeRoots, i + 1); + if (next.zIndex < current.zIndex) { + Clay__LayoutElementTreeRootArray_Set(&context->layoutElementTreeRoots, i, next); + Clay__LayoutElementTreeRootArray_Set(&context->layoutElementTreeRoots, i + 1, current); + } + } + sortMax--; + } + + // Calculate final positions and generate render commands + context->renderCommands.length = 0; + dfsBuffer.length = 0; + for (int32_t rootIndex = 0; rootIndex < context->layoutElementTreeRoots.length; ++rootIndex) { + dfsBuffer.length = 0; + Clay__LayoutElementTreeRoot *root = Clay__LayoutElementTreeRootArray_Get(&context->layoutElementTreeRoots, rootIndex); + Clay_LayoutElement *rootElement = Clay_LayoutElementArray_Get(&context->layoutElements, (int)root->layoutElementIndex); + Clay_Vector2 rootPosition = CLAY__DEFAULT_STRUCT; + Clay_LayoutElementHashMapItem *parentHashMapItem = Clay__GetHashMapItem(root->parentId); + // Position root floating containers + if (Clay__ElementHasConfig(rootElement, CLAY__ELEMENT_CONFIG_TYPE_FLOATING) && parentHashMapItem) { + Clay_FloatingElementConfig *config = Clay__FindElementConfigWithType(rootElement, CLAY__ELEMENT_CONFIG_TYPE_FLOATING).floatingElementConfig; + Clay_Dimensions rootDimensions = rootElement->dimensions; + Clay_BoundingBox parentBoundingBox = parentHashMapItem->boundingBox; + // Set X position + Clay_Vector2 targetAttachPosition = CLAY__DEFAULT_STRUCT; + switch (config->attachPoints.parent) { + case CLAY_ATTACH_POINT_LEFT_TOP: + case CLAY_ATTACH_POINT_LEFT_CENTER: + case CLAY_ATTACH_POINT_LEFT_BOTTOM: targetAttachPosition.x = parentBoundingBox.x; break; + case CLAY_ATTACH_POINT_CENTER_TOP: + case CLAY_ATTACH_POINT_CENTER_CENTER: + case CLAY_ATTACH_POINT_CENTER_BOTTOM: targetAttachPosition.x = parentBoundingBox.x + (parentBoundingBox.width / 2); break; + case CLAY_ATTACH_POINT_RIGHT_TOP: + case CLAY_ATTACH_POINT_RIGHT_CENTER: + case CLAY_ATTACH_POINT_RIGHT_BOTTOM: targetAttachPosition.x = parentBoundingBox.x + parentBoundingBox.width; break; + } + switch (config->attachPoints.element) { + case CLAY_ATTACH_POINT_LEFT_TOP: + case CLAY_ATTACH_POINT_LEFT_CENTER: + case CLAY_ATTACH_POINT_LEFT_BOTTOM: break; + case CLAY_ATTACH_POINT_CENTER_TOP: + case CLAY_ATTACH_POINT_CENTER_CENTER: + case CLAY_ATTACH_POINT_CENTER_BOTTOM: targetAttachPosition.x -= (rootDimensions.width / 2); break; + case CLAY_ATTACH_POINT_RIGHT_TOP: + case CLAY_ATTACH_POINT_RIGHT_CENTER: + case CLAY_ATTACH_POINT_RIGHT_BOTTOM: targetAttachPosition.x -= rootDimensions.width; break; + } + switch (config->attachPoints.parent) { // I know I could merge the x and y switch statements, but this is easier to read + case CLAY_ATTACH_POINT_LEFT_TOP: + case CLAY_ATTACH_POINT_RIGHT_TOP: + case CLAY_ATTACH_POINT_CENTER_TOP: targetAttachPosition.y = parentBoundingBox.y; break; + case CLAY_ATTACH_POINT_LEFT_CENTER: + case CLAY_ATTACH_POINT_CENTER_CENTER: + case CLAY_ATTACH_POINT_RIGHT_CENTER: targetAttachPosition.y = parentBoundingBox.y + (parentBoundingBox.height / 2); break; + case CLAY_ATTACH_POINT_LEFT_BOTTOM: + case CLAY_ATTACH_POINT_CENTER_BOTTOM: + case CLAY_ATTACH_POINT_RIGHT_BOTTOM: targetAttachPosition.y = parentBoundingBox.y + parentBoundingBox.height; break; + } + switch (config->attachPoints.element) { + case CLAY_ATTACH_POINT_LEFT_TOP: + case CLAY_ATTACH_POINT_RIGHT_TOP: + case CLAY_ATTACH_POINT_CENTER_TOP: break; + case CLAY_ATTACH_POINT_LEFT_CENTER: + case CLAY_ATTACH_POINT_CENTER_CENTER: + case CLAY_ATTACH_POINT_RIGHT_CENTER: targetAttachPosition.y -= (rootDimensions.height / 2); break; + case CLAY_ATTACH_POINT_LEFT_BOTTOM: + case CLAY_ATTACH_POINT_CENTER_BOTTOM: + case CLAY_ATTACH_POINT_RIGHT_BOTTOM: targetAttachPosition.y -= rootDimensions.height; break; + } + targetAttachPosition.x += config->offset.x; + targetAttachPosition.y += config->offset.y; + rootPosition = targetAttachPosition; + } + if (root->clipElementId) { + Clay_LayoutElementHashMapItem *clipHashMapItem = Clay__GetHashMapItem(root->clipElementId); + if (clipHashMapItem) { + // Floating elements that are attached to scrolling contents won't be correctly positioned if external scroll handling is enabled, fix here + if (context->externalScrollHandlingEnabled) { + Clay_ClipElementConfig *clipConfig = Clay__FindElementConfigWithType(clipHashMapItem->layoutElement, CLAY__ELEMENT_CONFIG_TYPE_CLIP).clipElementConfig; + if (clipConfig->horizontal) { + rootPosition.x += clipConfig->childOffset.x; + } + if (clipConfig->vertical) { + rootPosition.y += clipConfig->childOffset.y; + } + } + Clay__AddRenderCommand(CLAY__INIT(Clay_RenderCommand) { + .boundingBox = clipHashMapItem->boundingBox, + .userData = 0, + .id = Clay__HashNumber(rootElement->id, rootElement->childrenOrTextContent.children.length + 10).id, // TODO need a better strategy for managing derived ids + .zIndex = root->zIndex, + .commandType = CLAY_RENDER_COMMAND_TYPE_SCISSOR_START, + }); + } + } + Clay__LayoutElementTreeNodeArray_Add(&dfsBuffer, CLAY__INIT(Clay__LayoutElementTreeNode) { .layoutElement = rootElement, .position = rootPosition, .nextChildOffset = { .x = (float)rootElement->layoutConfig->padding.left, .y = (float)rootElement->layoutConfig->padding.top } }); + + context->treeNodeVisited.internalArray[0] = false; + while (dfsBuffer.length > 0) { + Clay__LayoutElementTreeNode *currentElementTreeNode = Clay__LayoutElementTreeNodeArray_Get(&dfsBuffer, (int)dfsBuffer.length - 1); + Clay_LayoutElement *currentElement = currentElementTreeNode->layoutElement; + Clay_LayoutConfig *layoutConfig = currentElement->layoutConfig; + Clay_Vector2 scrollOffset = CLAY__DEFAULT_STRUCT; + + // This will only be run a single time for each element in downwards DFS order + if (!context->treeNodeVisited.internalArray[dfsBuffer.length - 1]) { + context->treeNodeVisited.internalArray[dfsBuffer.length - 1] = true; + + Clay_BoundingBox currentElementBoundingBox = { currentElementTreeNode->position.x, currentElementTreeNode->position.y, currentElement->dimensions.width, currentElement->dimensions.height }; + if (Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_FLOATING)) { + Clay_FloatingElementConfig *floatingElementConfig = Clay__FindElementConfigWithType(currentElement, CLAY__ELEMENT_CONFIG_TYPE_FLOATING).floatingElementConfig; + Clay_Dimensions expand = floatingElementConfig->expand; + currentElementBoundingBox.x -= expand.width; + currentElementBoundingBox.width += expand.width * 2; + currentElementBoundingBox.y -= expand.height; + currentElementBoundingBox.height += expand.height * 2; + } + + Clay__ScrollContainerDataInternal *scrollContainerData = CLAY__NULL; + // Apply scroll offsets to container + if (Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_CLIP)) { + Clay_ClipElementConfig *clipConfig = Clay__FindElementConfigWithType(currentElement, CLAY__ELEMENT_CONFIG_TYPE_CLIP).clipElementConfig; + + // This linear scan could theoretically be slow under very strange conditions, but I can't imagine a real UI with more than a few 10's of scroll containers + for (int32_t i = 0; i < context->scrollContainerDatas.length; i++) { + Clay__ScrollContainerDataInternal *mapping = Clay__ScrollContainerDataInternalArray_Get(&context->scrollContainerDatas, i); + if (mapping->layoutElement == currentElement) { + scrollContainerData = mapping; + mapping->boundingBox = currentElementBoundingBox; + scrollOffset = clipConfig->childOffset; + if (context->externalScrollHandlingEnabled) { + scrollOffset = CLAY__INIT(Clay_Vector2) CLAY__DEFAULT_STRUCT; + } + break; + } + } + } + + Clay_LayoutElementHashMapItem *hashMapItem = Clay__GetHashMapItem(currentElement->id); + if (hashMapItem) { + hashMapItem->boundingBox = currentElementBoundingBox; + } + + int32_t sortedConfigIndexes[20]; + for (int32_t elementConfigIndex = 0; elementConfigIndex < currentElement->elementConfigs.length; ++elementConfigIndex) { + sortedConfigIndexes[elementConfigIndex] = elementConfigIndex; + } + sortMax = currentElement->elementConfigs.length - 1; + while (sortMax > 0) { // todo dumb bubble sort + for (int32_t i = 0; i < sortMax; ++i) { + int32_t current = sortedConfigIndexes[i]; + int32_t next = sortedConfigIndexes[i + 1]; + Clay__ElementConfigType currentType = Clay__ElementConfigArraySlice_Get(¤tElement->elementConfigs, current)->type; + Clay__ElementConfigType nextType = Clay__ElementConfigArraySlice_Get(¤tElement->elementConfigs, next)->type; + if (nextType == CLAY__ELEMENT_CONFIG_TYPE_CLIP || currentType == CLAY__ELEMENT_CONFIG_TYPE_BORDER) { + sortedConfigIndexes[i] = next; + sortedConfigIndexes[i + 1] = current; + } + } + sortMax--; + } + + bool emitRectangle = false; + // Create the render commands for this element + Clay_SharedElementConfig *sharedConfig = Clay__FindElementConfigWithType(currentElement, CLAY__ELEMENT_CONFIG_TYPE_SHARED).sharedElementConfig; + if (sharedConfig && sharedConfig->backgroundColor.a > 0) { + emitRectangle = true; + } + else if (!sharedConfig) { + emitRectangle = false; + sharedConfig = &Clay_SharedElementConfig_DEFAULT; + } + for (int32_t elementConfigIndex = 0; elementConfigIndex < currentElement->elementConfigs.length; ++elementConfigIndex) { + Clay_ElementConfig *elementConfig = Clay__ElementConfigArraySlice_Get(¤tElement->elementConfigs, sortedConfigIndexes[elementConfigIndex]); + Clay_RenderCommand renderCommand = { + .boundingBox = currentElementBoundingBox, + .userData = sharedConfig->userData, + .id = currentElement->id, + }; + + bool offscreen = Clay__ElementIsOffscreen(¤tElementBoundingBox); + // Culling - Don't bother to generate render commands for rectangles entirely outside the screen - this won't stop their children from being rendered if they overflow + bool shouldRender = !offscreen; + switch (elementConfig->type) { + case CLAY__ELEMENT_CONFIG_TYPE_ASPECT: + case CLAY__ELEMENT_CONFIG_TYPE_FLOATING: + case CLAY__ELEMENT_CONFIG_TYPE_SHARED: + case CLAY__ELEMENT_CONFIG_TYPE_BORDER: { + shouldRender = false; + break; + } + case CLAY__ELEMENT_CONFIG_TYPE_CLIP: { + renderCommand.commandType = CLAY_RENDER_COMMAND_TYPE_SCISSOR_START; + renderCommand.renderData = CLAY__INIT(Clay_RenderData) { + .clip = { + .horizontal = elementConfig->config.clipElementConfig->horizontal, + .vertical = elementConfig->config.clipElementConfig->vertical, + } + }; + break; + } + case CLAY__ELEMENT_CONFIG_TYPE_IMAGE: { + renderCommand.commandType = CLAY_RENDER_COMMAND_TYPE_IMAGE; + renderCommand.renderData = CLAY__INIT(Clay_RenderData) { + .image = { + .backgroundColor = sharedConfig->backgroundColor, + .cornerRadius = sharedConfig->cornerRadius, + .imageData = elementConfig->config.imageElementConfig->imageData, + } + }; + emitRectangle = false; + break; + } + case CLAY__ELEMENT_CONFIG_TYPE_TEXT: { + if (!shouldRender) { + break; + } + shouldRender = false; + Clay_ElementConfigUnion configUnion = elementConfig->config; + Clay_TextElementConfig *textElementConfig = configUnion.textElementConfig; + float naturalLineHeight = currentElement->childrenOrTextContent.textElementData->preferredDimensions.height; + float finalLineHeight = textElementConfig->lineHeight > 0 ? (float)textElementConfig->lineHeight : naturalLineHeight; + float lineHeightOffset = (finalLineHeight - naturalLineHeight) / 2; + float yPosition = lineHeightOffset; + for (int32_t lineIndex = 0; lineIndex < currentElement->childrenOrTextContent.textElementData->wrappedLines.length; ++lineIndex) { + Clay__WrappedTextLine *wrappedLine = Clay__WrappedTextLineArraySlice_Get(¤tElement->childrenOrTextContent.textElementData->wrappedLines, lineIndex); + if (wrappedLine->line.length == 0) { + yPosition += finalLineHeight; + continue; + } + float offset = (currentElementBoundingBox.width - wrappedLine->dimensions.width); + if (textElementConfig->textAlignment == CLAY_TEXT_ALIGN_LEFT) { + offset = 0; + } + if (textElementConfig->textAlignment == CLAY_TEXT_ALIGN_CENTER) { + offset /= 2; + } + Clay__AddRenderCommand(CLAY__INIT(Clay_RenderCommand) { + .boundingBox = { currentElementBoundingBox.x + offset, currentElementBoundingBox.y + yPosition, wrappedLine->dimensions.width, wrappedLine->dimensions.height }, + .renderData = { .text = { + .stringContents = CLAY__INIT(Clay_StringSlice) { .length = wrappedLine->line.length, .chars = wrappedLine->line.chars, .baseChars = currentElement->childrenOrTextContent.textElementData->text.chars }, + .textColor = textElementConfig->textColor, + .fontId = textElementConfig->fontId, + .fontSize = textElementConfig->fontSize, + .letterSpacing = textElementConfig->letterSpacing, + .lineHeight = textElementConfig->lineHeight, + }}, + .userData = textElementConfig->userData, + .id = Clay__HashNumber(lineIndex, currentElement->id).id, + .zIndex = root->zIndex, + .commandType = CLAY_RENDER_COMMAND_TYPE_TEXT, + }); + yPosition += finalLineHeight; + + if (!context->disableCulling && (currentElementBoundingBox.y + yPosition > context->layoutDimensions.height)) { + break; + } + } + break; + } + case CLAY__ELEMENT_CONFIG_TYPE_CUSTOM: { + renderCommand.commandType = CLAY_RENDER_COMMAND_TYPE_CUSTOM; + renderCommand.renderData = CLAY__INIT(Clay_RenderData) { + .custom = { + .backgroundColor = sharedConfig->backgroundColor, + .cornerRadius = sharedConfig->cornerRadius, + .customData = elementConfig->config.customElementConfig->customData, + } + }; + emitRectangle = false; + break; + } + default: break; + } + if (shouldRender) { + Clay__AddRenderCommand(renderCommand); + } + if (offscreen) { + // NOTE: You may be tempted to try an early return / continue if an element is off screen. Why bother calculating layout for its children, right? + // Unfortunately, a FLOATING_CONTAINER may be defined that attaches to a child or grandchild of this element, which is large enough to still + // be on screen, even if this element isn't. That depends on this element and it's children being laid out correctly (even if they are entirely off screen) + } + } + + if (emitRectangle) { + Clay__AddRenderCommand(CLAY__INIT(Clay_RenderCommand) { + .boundingBox = currentElementBoundingBox, + .renderData = { .rectangle = { + .backgroundColor = sharedConfig->backgroundColor, + .cornerRadius = sharedConfig->cornerRadius, + }}, + .userData = sharedConfig->userData, + .id = currentElement->id, + .zIndex = root->zIndex, + .commandType = CLAY_RENDER_COMMAND_TYPE_RECTANGLE, + }); + } + + // Setup initial on-axis alignment + if (!Clay__ElementHasConfig(currentElementTreeNode->layoutElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT)) { + Clay_Dimensions contentSize = {0,0}; + if (layoutConfig->layoutDirection == CLAY_LEFT_TO_RIGHT) { + for (int32_t i = 0; i < currentElement->childrenOrTextContent.children.length; ++i) { + Clay_LayoutElement *childElement = Clay_LayoutElementArray_Get(&context->layoutElements, currentElement->childrenOrTextContent.children.elements[i]); + contentSize.width += childElement->dimensions.width; + contentSize.height = CLAY__MAX(contentSize.height, childElement->dimensions.height); + } + contentSize.width += (float)(CLAY__MAX(currentElement->childrenOrTextContent.children.length - 1, 0) * layoutConfig->childGap); + float extraSpace = currentElement->dimensions.width - (float)(layoutConfig->padding.left + layoutConfig->padding.right) - contentSize.width; + switch (layoutConfig->childAlignment.x) { + case CLAY_ALIGN_X_LEFT: extraSpace = 0; break; + case CLAY_ALIGN_X_CENTER: extraSpace /= 2; break; + default: break; + } + currentElementTreeNode->nextChildOffset.x += extraSpace; + extraSpace = CLAY__MAX(0, extraSpace); + } else { + for (int32_t i = 0; i < currentElement->childrenOrTextContent.children.length; ++i) { + Clay_LayoutElement *childElement = Clay_LayoutElementArray_Get(&context->layoutElements, currentElement->childrenOrTextContent.children.elements[i]); + contentSize.width = CLAY__MAX(contentSize.width, childElement->dimensions.width); + contentSize.height += childElement->dimensions.height; + } + contentSize.height += (float)(CLAY__MAX(currentElement->childrenOrTextContent.children.length - 1, 0) * layoutConfig->childGap); + float extraSpace = currentElement->dimensions.height - (float)(layoutConfig->padding.top + layoutConfig->padding.bottom) - contentSize.height; + switch (layoutConfig->childAlignment.y) { + case CLAY_ALIGN_Y_TOP: extraSpace = 0; break; + case CLAY_ALIGN_Y_CENTER: extraSpace /= 2; break; + default: break; + } + extraSpace = CLAY__MAX(0, extraSpace); + currentElementTreeNode->nextChildOffset.y += extraSpace; + } + + if (scrollContainerData) { + scrollContainerData->contentSize = CLAY__INIT(Clay_Dimensions) { contentSize.width + (float)(layoutConfig->padding.left + layoutConfig->padding.right), contentSize.height + (float)(layoutConfig->padding.top + layoutConfig->padding.bottom) }; + } + } + } + else { + // DFS is returning upwards backwards + bool closeClipElement = false; + Clay_ClipElementConfig *clipConfig = Clay__FindElementConfigWithType(currentElement, CLAY__ELEMENT_CONFIG_TYPE_CLIP).clipElementConfig; + if (clipConfig) { + closeClipElement = true; + for (int32_t i = 0; i < context->scrollContainerDatas.length; i++) { + Clay__ScrollContainerDataInternal *mapping = Clay__ScrollContainerDataInternalArray_Get(&context->scrollContainerDatas, i); + if (mapping->layoutElement == currentElement) { + scrollOffset = clipConfig->childOffset; + if (context->externalScrollHandlingEnabled) { + scrollOffset = CLAY__INIT(Clay_Vector2) CLAY__DEFAULT_STRUCT; + } + break; + } + } + } + + if (Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_BORDER)) { + Clay_LayoutElementHashMapItem *currentElementData = Clay__GetHashMapItem(currentElement->id); + Clay_BoundingBox currentElementBoundingBox = currentElementData->boundingBox; + + // Culling - Don't bother to generate render commands for rectangles entirely outside the screen - this won't stop their children from being rendered if they overflow + if (!Clay__ElementIsOffscreen(¤tElementBoundingBox)) { + Clay_SharedElementConfig *sharedConfig = Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_SHARED) ? Clay__FindElementConfigWithType(currentElement, CLAY__ELEMENT_CONFIG_TYPE_SHARED).sharedElementConfig : &Clay_SharedElementConfig_DEFAULT; + Clay_BorderElementConfig *borderConfig = Clay__FindElementConfigWithType(currentElement, CLAY__ELEMENT_CONFIG_TYPE_BORDER).borderElementConfig; + Clay_RenderCommand renderCommand = { + .boundingBox = currentElementBoundingBox, + .renderData = { .border = { + .color = borderConfig->color, + .cornerRadius = sharedConfig->cornerRadius, + .width = borderConfig->width + }}, + .userData = sharedConfig->userData, + .id = Clay__HashNumber(currentElement->id, currentElement->childrenOrTextContent.children.length).id, + .commandType = CLAY_RENDER_COMMAND_TYPE_BORDER, + }; + Clay__AddRenderCommand(renderCommand); + if (borderConfig->width.betweenChildren > 0 && borderConfig->color.a > 0) { + float halfGap = layoutConfig->childGap / 2; + Clay_Vector2 borderOffset = { (float)layoutConfig->padding.left - halfGap, (float)layoutConfig->padding.top - halfGap }; + if (layoutConfig->layoutDirection == CLAY_LEFT_TO_RIGHT) { + for (int32_t i = 0; i < currentElement->childrenOrTextContent.children.length; ++i) { + Clay_LayoutElement *childElement = Clay_LayoutElementArray_Get(&context->layoutElements, currentElement->childrenOrTextContent.children.elements[i]); + if (i > 0) { + Clay__AddRenderCommand(CLAY__INIT(Clay_RenderCommand) { + .boundingBox = { currentElementBoundingBox.x + borderOffset.x + scrollOffset.x, currentElementBoundingBox.y + scrollOffset.y, (float)borderConfig->width.betweenChildren, currentElement->dimensions.height }, + .renderData = { .rectangle = { + .backgroundColor = borderConfig->color, + } }, + .userData = sharedConfig->userData, + .id = Clay__HashNumber(currentElement->id, currentElement->childrenOrTextContent.children.length + 1 + i).id, + .commandType = CLAY_RENDER_COMMAND_TYPE_RECTANGLE, + }); + } + borderOffset.x += (childElement->dimensions.width + (float)layoutConfig->childGap); + } + } else { + for (int32_t i = 0; i < currentElement->childrenOrTextContent.children.length; ++i) { + Clay_LayoutElement *childElement = Clay_LayoutElementArray_Get(&context->layoutElements, currentElement->childrenOrTextContent.children.elements[i]); + if (i > 0) { + Clay__AddRenderCommand(CLAY__INIT(Clay_RenderCommand) { + .boundingBox = { currentElementBoundingBox.x + scrollOffset.x, currentElementBoundingBox.y + borderOffset.y + scrollOffset.y, currentElement->dimensions.width, (float)borderConfig->width.betweenChildren }, + .renderData = { .rectangle = { + .backgroundColor = borderConfig->color, + } }, + .userData = sharedConfig->userData, + .id = Clay__HashNumber(currentElement->id, currentElement->childrenOrTextContent.children.length + 1 + i).id, + .commandType = CLAY_RENDER_COMMAND_TYPE_RECTANGLE, + }); + } + borderOffset.y += (childElement->dimensions.height + (float)layoutConfig->childGap); + } + } + } + } + } + // This exists because the scissor needs to end _after_ borders between elements + if (closeClipElement) { + Clay__AddRenderCommand(CLAY__INIT(Clay_RenderCommand) { + .id = Clay__HashNumber(currentElement->id, rootElement->childrenOrTextContent.children.length + 11).id, + .commandType = CLAY_RENDER_COMMAND_TYPE_SCISSOR_END, + }); + } + + dfsBuffer.length--; + continue; + } + + // Add children to the DFS buffer + if (!Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT)) { + dfsBuffer.length += currentElement->childrenOrTextContent.children.length; + for (int32_t i = 0; i < currentElement->childrenOrTextContent.children.length; ++i) { + Clay_LayoutElement *childElement = Clay_LayoutElementArray_Get(&context->layoutElements, currentElement->childrenOrTextContent.children.elements[i]); + // Alignment along non layout axis + if (layoutConfig->layoutDirection == CLAY_LEFT_TO_RIGHT) { + currentElementTreeNode->nextChildOffset.y = currentElement->layoutConfig->padding.top; + float whiteSpaceAroundChild = currentElement->dimensions.height - (float)(layoutConfig->padding.top + layoutConfig->padding.bottom) - childElement->dimensions.height; + switch (layoutConfig->childAlignment.y) { + case CLAY_ALIGN_Y_TOP: break; + case CLAY_ALIGN_Y_CENTER: currentElementTreeNode->nextChildOffset.y += whiteSpaceAroundChild / 2; break; + case CLAY_ALIGN_Y_BOTTOM: currentElementTreeNode->nextChildOffset.y += whiteSpaceAroundChild; break; + } + } else { + currentElementTreeNode->nextChildOffset.x = currentElement->layoutConfig->padding.left; + float whiteSpaceAroundChild = currentElement->dimensions.width - (float)(layoutConfig->padding.left + layoutConfig->padding.right) - childElement->dimensions.width; + switch (layoutConfig->childAlignment.x) { + case CLAY_ALIGN_X_LEFT: break; + case CLAY_ALIGN_X_CENTER: currentElementTreeNode->nextChildOffset.x += whiteSpaceAroundChild / 2; break; + case CLAY_ALIGN_X_RIGHT: currentElementTreeNode->nextChildOffset.x += whiteSpaceAroundChild; break; + } + } + + Clay_Vector2 childPosition = { + currentElementTreeNode->position.x + currentElementTreeNode->nextChildOffset.x + scrollOffset.x, + currentElementTreeNode->position.y + currentElementTreeNode->nextChildOffset.y + scrollOffset.y, + }; + + // DFS buffer elements need to be added in reverse because stack traversal happens backwards + uint32_t newNodeIndex = dfsBuffer.length - 1 - i; + dfsBuffer.internalArray[newNodeIndex] = CLAY__INIT(Clay__LayoutElementTreeNode) { + .layoutElement = childElement, + .position = { childPosition.x, childPosition.y }, + .nextChildOffset = { .x = (float)childElement->layoutConfig->padding.left, .y = (float)childElement->layoutConfig->padding.top }, + }; + context->treeNodeVisited.internalArray[newNodeIndex] = false; + + // Update parent offsets + if (layoutConfig->layoutDirection == CLAY_LEFT_TO_RIGHT) { + currentElementTreeNode->nextChildOffset.x += childElement->dimensions.width + (float)layoutConfig->childGap; + } else { + currentElementTreeNode->nextChildOffset.y += childElement->dimensions.height + (float)layoutConfig->childGap; + } + } + } + } + + if (root->clipElementId) { + Clay__AddRenderCommand(CLAY__INIT(Clay_RenderCommand) { .id = Clay__HashNumber(rootElement->id, rootElement->childrenOrTextContent.children.length + 11).id, .commandType = CLAY_RENDER_COMMAND_TYPE_SCISSOR_END }); + } + } +} + +CLAY_WASM_EXPORT("Clay_GetPointerOverIds") +CLAY_DLL_EXPORT Clay_ElementIdArray Clay_GetPointerOverIds(void) { + return Clay_GetCurrentContext()->pointerOverIds; +} + +#pragma region DebugTools +Clay_Color CLAY__DEBUGVIEW_COLOR_1 = {58, 56, 52, 255}; +Clay_Color CLAY__DEBUGVIEW_COLOR_2 = {62, 60, 58, 255}; +Clay_Color CLAY__DEBUGVIEW_COLOR_3 = {141, 133, 135, 255}; +Clay_Color CLAY__DEBUGVIEW_COLOR_4 = {238, 226, 231, 255}; +Clay_Color CLAY__DEBUGVIEW_COLOR_SELECTED_ROW = {102, 80, 78, 255}; +const int32_t CLAY__DEBUGVIEW_ROW_HEIGHT = 30; +const int32_t CLAY__DEBUGVIEW_OUTER_PADDING = 10; +const int32_t CLAY__DEBUGVIEW_INDENT_WIDTH = 16; +Clay_TextElementConfig Clay__DebugView_TextNameConfig = {.textColor = {238, 226, 231, 255}, .fontSize = 16, .wrapMode = CLAY_TEXT_WRAP_NONE }; +Clay_LayoutConfig Clay__DebugView_ScrollViewItemLayoutConfig = CLAY__DEFAULT_STRUCT; + +typedef struct { + Clay_String label; + Clay_Color color; +} Clay__DebugElementConfigTypeLabelConfig; + +Clay__DebugElementConfigTypeLabelConfig Clay__DebugGetElementConfigTypeLabel(Clay__ElementConfigType type) { + switch (type) { + case CLAY__ELEMENT_CONFIG_TYPE_SHARED: return CLAY__INIT(Clay__DebugElementConfigTypeLabelConfig) { CLAY_STRING("Shared"), {243,134,48,255} }; + case CLAY__ELEMENT_CONFIG_TYPE_TEXT: return CLAY__INIT(Clay__DebugElementConfigTypeLabelConfig) { CLAY_STRING("Text"), {105,210,231,255} }; + case CLAY__ELEMENT_CONFIG_TYPE_ASPECT: return CLAY__INIT(Clay__DebugElementConfigTypeLabelConfig) { CLAY_STRING("Aspect"), {101,149,194,255} }; + case CLAY__ELEMENT_CONFIG_TYPE_IMAGE: return CLAY__INIT(Clay__DebugElementConfigTypeLabelConfig) { CLAY_STRING("Image"), {121,189,154,255} }; + case CLAY__ELEMENT_CONFIG_TYPE_FLOATING: return CLAY__INIT(Clay__DebugElementConfigTypeLabelConfig) { CLAY_STRING("Floating"), {250,105,0,255} }; + case CLAY__ELEMENT_CONFIG_TYPE_CLIP: return CLAY__INIT(Clay__DebugElementConfigTypeLabelConfig) {CLAY_STRING("Scroll"), {242, 196, 90, 255} }; + case CLAY__ELEMENT_CONFIG_TYPE_BORDER: return CLAY__INIT(Clay__DebugElementConfigTypeLabelConfig) {CLAY_STRING("Border"), {108, 91, 123, 255} }; + case CLAY__ELEMENT_CONFIG_TYPE_CUSTOM: return CLAY__INIT(Clay__DebugElementConfigTypeLabelConfig) { CLAY_STRING("Custom"), {11,72,107,255} }; + default: break; + } + return CLAY__INIT(Clay__DebugElementConfigTypeLabelConfig) { CLAY_STRING("Error"), {0,0,0,255} }; +} + +typedef struct { + int32_t rowCount; + int32_t selectedElementRowIndex; +} Clay__RenderDebugLayoutData; + +// Returns row count +Clay__RenderDebugLayoutData Clay__RenderDebugLayoutElementsList(int32_t initialRootsLength, int32_t highlightedRowIndex) { + Clay_Context* context = Clay_GetCurrentContext(); + Clay__int32_tArray dfsBuffer = context->reusableElementIndexBuffer; + Clay__DebugView_ScrollViewItemLayoutConfig = CLAY__INIT(Clay_LayoutConfig) { .sizing = { .height = CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_ROW_HEIGHT) }, .childGap = 6, .childAlignment = { .y = CLAY_ALIGN_Y_CENTER }}; + Clay__RenderDebugLayoutData layoutData = CLAY__DEFAULT_STRUCT; + + uint32_t highlightedElementId = 0; + + for (int32_t rootIndex = 0; rootIndex < initialRootsLength; ++rootIndex) { + dfsBuffer.length = 0; + Clay__LayoutElementTreeRoot *root = Clay__LayoutElementTreeRootArray_Get(&context->layoutElementTreeRoots, rootIndex); + Clay__int32_tArray_Add(&dfsBuffer, (int32_t)root->layoutElementIndex); + context->treeNodeVisited.internalArray[0] = false; + if (rootIndex > 0) { + CLAY(CLAY_IDI("Clay__DebugView_EmptyRowOuter", rootIndex), { .layout = { .sizing = {.width = CLAY_SIZING_GROW(0)}, .padding = {CLAY__DEBUGVIEW_INDENT_WIDTH / 2, 0, 0, 0} } }) { + CLAY(CLAY_IDI("Clay__DebugView_EmptyRow", rootIndex), { .layout = { .sizing = { .width = CLAY_SIZING_GROW(0), .height = CLAY_SIZING_FIXED((float)CLAY__DEBUGVIEW_ROW_HEIGHT) }}, .border = { .color = CLAY__DEBUGVIEW_COLOR_3, .width = { .top = 1 } } }) {} + } + layoutData.rowCount++; + } + while (dfsBuffer.length > 0) { + int32_t currentElementIndex = Clay__int32_tArray_GetValue(&dfsBuffer, (int)dfsBuffer.length - 1); + Clay_LayoutElement *currentElement = Clay_LayoutElementArray_Get(&context->layoutElements, (int)currentElementIndex); + if (context->treeNodeVisited.internalArray[dfsBuffer.length - 1]) { + if (!Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT) && currentElement->childrenOrTextContent.children.length > 0) { + Clay__CloseElement(); + Clay__CloseElement(); + Clay__CloseElement(); + } + dfsBuffer.length--; + continue; + } + + if (highlightedRowIndex == layoutData.rowCount) { + if (context->pointerInfo.state == CLAY_POINTER_DATA_PRESSED_THIS_FRAME) { + context->debugSelectedElementId = currentElement->id; + } + highlightedElementId = currentElement->id; + } + + context->treeNodeVisited.internalArray[dfsBuffer.length - 1] = true; + Clay_LayoutElementHashMapItem *currentElementData = Clay__GetHashMapItem(currentElement->id); + bool offscreen = Clay__ElementIsOffscreen(¤tElementData->boundingBox); + if (context->debugSelectedElementId == currentElement->id) { + layoutData.selectedElementRowIndex = layoutData.rowCount; + } + CLAY(CLAY_IDI("Clay__DebugView_ElementOuter", currentElement->id), { .layout = Clay__DebugView_ScrollViewItemLayoutConfig }) { + // Collapse icon / button + if (!(Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT) || currentElement->childrenOrTextContent.children.length == 0)) { + CLAY(CLAY_IDI("Clay__DebugView_CollapseElement", currentElement->id), { + .layout = { .sizing = {CLAY_SIZING_FIXED(16), CLAY_SIZING_FIXED(16)}, .childAlignment = { CLAY_ALIGN_X_CENTER, CLAY_ALIGN_Y_CENTER} }, + .cornerRadius = CLAY_CORNER_RADIUS(4), + .border = { .color = CLAY__DEBUGVIEW_COLOR_3, .width = {1, 1, 1, 1, 0} }, + }) { + CLAY_TEXT((currentElementData && currentElementData->debugData->collapsed) ? CLAY_STRING("+") : CLAY_STRING("-"), CLAY_TEXT_CONFIG({ .textColor = CLAY__DEBUGVIEW_COLOR_4, .fontSize = 16 })); + } + } else { // Square dot for empty containers + CLAY_AUTO_ID({ .layout = { .sizing = {CLAY_SIZING_FIXED(16), CLAY_SIZING_FIXED(16)}, .childAlignment = { CLAY_ALIGN_X_CENTER, CLAY_ALIGN_Y_CENTER } } }) { + CLAY_AUTO_ID({ .layout = { .sizing = {CLAY_SIZING_FIXED(8), CLAY_SIZING_FIXED(8)} }, .backgroundColor = CLAY__DEBUGVIEW_COLOR_3, .cornerRadius = CLAY_CORNER_RADIUS(2) }) {} + } + } + // Collisions and offscreen info + if (currentElementData) { + if (currentElementData->debugData->collision) { + CLAY_AUTO_ID({ .layout = { .padding = { 8, 8, 2, 2 }}, .border = { .color = {177, 147, 8, 255}, .width = {1, 1, 1, 1, 0} } }) { + CLAY_TEXT(CLAY_STRING("Duplicate ID"), CLAY_TEXT_CONFIG({ .textColor = CLAY__DEBUGVIEW_COLOR_3, .fontSize = 16 })); + } + } + if (offscreen) { + CLAY_AUTO_ID({ .layout = { .padding = { 8, 8, 2, 2 } }, .border = { .color = CLAY__DEBUGVIEW_COLOR_3, .width = { 1, 1, 1, 1, 0} } }) { + CLAY_TEXT(CLAY_STRING("Offscreen"), CLAY_TEXT_CONFIG({ .textColor = CLAY__DEBUGVIEW_COLOR_3, .fontSize = 16 })); + } + } + } + Clay_String idString = context->layoutElementIdStrings.internalArray[currentElementIndex]; + if (idString.length > 0) { + CLAY_TEXT(idString, offscreen ? CLAY_TEXT_CONFIG({ .textColor = CLAY__DEBUGVIEW_COLOR_3, .fontSize = 16 }) : &Clay__DebugView_TextNameConfig); + } + for (int32_t elementConfigIndex = 0; elementConfigIndex < currentElement->elementConfigs.length; ++elementConfigIndex) { + Clay_ElementConfig *elementConfig = Clay__ElementConfigArraySlice_Get(¤tElement->elementConfigs, elementConfigIndex); + if (elementConfig->type == CLAY__ELEMENT_CONFIG_TYPE_SHARED) { + Clay_Color labelColor = {243,134,48,90}; + labelColor.a = 90; + Clay_Color backgroundColor = elementConfig->config.sharedElementConfig->backgroundColor; + Clay_CornerRadius radius = elementConfig->config.sharedElementConfig->cornerRadius; + if (backgroundColor.a > 0) { + CLAY_AUTO_ID({ .layout = { .padding = { 8, 8, 2, 2 } }, .backgroundColor = labelColor, .cornerRadius = CLAY_CORNER_RADIUS(4), .border = { .color = labelColor, .width = { 1, 1, 1, 1, 0} } }) { + CLAY_TEXT(CLAY_STRING("Color"), CLAY_TEXT_CONFIG({ .textColor = offscreen ? CLAY__DEBUGVIEW_COLOR_3 : CLAY__DEBUGVIEW_COLOR_4, .fontSize = 16 })); + } + } + if (radius.bottomLeft > 0) { + CLAY_AUTO_ID({ .layout = { .padding = { 8, 8, 2, 2 } }, .backgroundColor = labelColor, .cornerRadius = CLAY_CORNER_RADIUS(4), .border = { .color = labelColor, .width = { 1, 1, 1, 1, 0 } } }) { + CLAY_TEXT(CLAY_STRING("Radius"), CLAY_TEXT_CONFIG({ .textColor = offscreen ? CLAY__DEBUGVIEW_COLOR_3 : CLAY__DEBUGVIEW_COLOR_4, .fontSize = 16 })); + } + } + continue; + } + Clay__DebugElementConfigTypeLabelConfig config = Clay__DebugGetElementConfigTypeLabel(elementConfig->type); + Clay_Color backgroundColor = config.color; + backgroundColor.a = 90; + CLAY_AUTO_ID({ .layout = { .padding = { 8, 8, 2, 2 } }, .backgroundColor = backgroundColor, .cornerRadius = CLAY_CORNER_RADIUS(4), .border = { .color = config.color, .width = { 1, 1, 1, 1, 0 } } }) { + CLAY_TEXT(config.label, CLAY_TEXT_CONFIG({ .textColor = offscreen ? CLAY__DEBUGVIEW_COLOR_3 : CLAY__DEBUGVIEW_COLOR_4, .fontSize = 16 })); + } + } + } + + // Render the text contents below the element as a non-interactive row + if (Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT)) { + layoutData.rowCount++; + Clay__TextElementData *textElementData = currentElement->childrenOrTextContent.textElementData; + Clay_TextElementConfig *rawTextConfig = offscreen ? CLAY_TEXT_CONFIG({ .textColor = CLAY__DEBUGVIEW_COLOR_3, .fontSize = 16 }) : &Clay__DebugView_TextNameConfig; + CLAY_AUTO_ID({ .layout = { .sizing = { .height = CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_ROW_HEIGHT)}, .childAlignment = { .y = CLAY_ALIGN_Y_CENTER } } }) { + CLAY_AUTO_ID({ .layout = { .sizing = {.width = CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_INDENT_WIDTH + 16) } } }) {} + CLAY_TEXT(CLAY_STRING("\""), rawTextConfig); + CLAY_TEXT(textElementData->text.length > 40 ? (CLAY__INIT(Clay_String) { .length = 40, .chars = textElementData->text.chars }) : textElementData->text, rawTextConfig); + if (textElementData->text.length > 40) { + CLAY_TEXT(CLAY_STRING("..."), rawTextConfig); + } + CLAY_TEXT(CLAY_STRING("\""), rawTextConfig); + } + } else if (currentElement->childrenOrTextContent.children.length > 0) { + Clay__OpenElement(); + Clay__ConfigureOpenElement(CLAY__INIT(Clay_ElementDeclaration) { .layout = { .padding = { .left = 8 } } }); + Clay__OpenElement(); + Clay__ConfigureOpenElement(CLAY__INIT(Clay_ElementDeclaration) { .layout = { .padding = { .left = CLAY__DEBUGVIEW_INDENT_WIDTH }}, .border = { .color = CLAY__DEBUGVIEW_COLOR_3, .width = { .left = 1 } }}); + Clay__OpenElement(); + Clay__ConfigureOpenElement(CLAY__INIT(Clay_ElementDeclaration) { .layout = { .layoutDirection = CLAY_TOP_TO_BOTTOM } }); + } + + layoutData.rowCount++; + if (!(Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT) || (currentElementData && currentElementData->debugData->collapsed))) { + for (int32_t i = currentElement->childrenOrTextContent.children.length - 1; i >= 0; --i) { + Clay__int32_tArray_Add(&dfsBuffer, currentElement->childrenOrTextContent.children.elements[i]); + context->treeNodeVisited.internalArray[dfsBuffer.length - 1] = false; // TODO needs to be ranged checked + } + } + } + } + + if (context->pointerInfo.state == CLAY_POINTER_DATA_PRESSED_THIS_FRAME) { + Clay_ElementId collapseButtonId = Clay__HashString(CLAY_STRING("Clay__DebugView_CollapseElement"), 0); + for (int32_t i = (int)context->pointerOverIds.length - 1; i >= 0; i--) { + Clay_ElementId *elementId = Clay_ElementIdArray_Get(&context->pointerOverIds, i); + if (elementId->baseId == collapseButtonId.baseId) { + Clay_LayoutElementHashMapItem *highlightedItem = Clay__GetHashMapItem(elementId->offset); + highlightedItem->debugData->collapsed = !highlightedItem->debugData->collapsed; + break; + } + } + } + + if (highlightedElementId) { + CLAY(CLAY_ID("Clay__DebugView_ElementHighlight"), { .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0)} }, .floating = { .parentId = highlightedElementId, .zIndex = 32767, .pointerCaptureMode = CLAY_POINTER_CAPTURE_MODE_PASSTHROUGH, .attachTo = CLAY_ATTACH_TO_ELEMENT_WITH_ID } }) { + CLAY(CLAY_ID("Clay__DebugView_ElementHighlightRectangle"), { .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0)} }, .backgroundColor = Clay__debugViewHighlightColor }) {} + } + } + return layoutData; +} + +void Clay__RenderDebugLayoutSizing(Clay_SizingAxis sizing, Clay_TextElementConfig *infoTextConfig) { + Clay_String sizingLabel = CLAY_STRING("GROW"); + if (sizing.type == CLAY__SIZING_TYPE_FIT) { + sizingLabel = CLAY_STRING("FIT"); + } else if (sizing.type == CLAY__SIZING_TYPE_PERCENT) { + sizingLabel = CLAY_STRING("PERCENT"); + } else if (sizing.type == CLAY__SIZING_TYPE_FIXED) { + sizingLabel = CLAY_STRING("FIXED"); + } + CLAY_TEXT(sizingLabel, infoTextConfig); + if (sizing.type == CLAY__SIZING_TYPE_GROW || sizing.type == CLAY__SIZING_TYPE_FIT || sizing.type == CLAY__SIZING_TYPE_FIXED) { + CLAY_TEXT(CLAY_STRING("("), infoTextConfig); + if (sizing.size.minMax.min != 0) { + CLAY_TEXT(CLAY_STRING("min: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(sizing.size.minMax.min), infoTextConfig); + if (sizing.size.minMax.max != CLAY__MAXFLOAT) { + CLAY_TEXT(CLAY_STRING(", "), infoTextConfig); + } + } + if (sizing.size.minMax.max != CLAY__MAXFLOAT) { + CLAY_TEXT(CLAY_STRING("max: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(sizing.size.minMax.max), infoTextConfig); + } + CLAY_TEXT(CLAY_STRING(")"), infoTextConfig); + } else if (sizing.type == CLAY__SIZING_TYPE_PERCENT) { + CLAY_TEXT(CLAY_STRING("("), infoTextConfig); + CLAY_TEXT(Clay__IntToString(sizing.size.percent * 100), infoTextConfig); + CLAY_TEXT(CLAY_STRING("%)"), infoTextConfig); + } +} + +void Clay__RenderDebugViewElementConfigHeader(Clay_String elementId, Clay__ElementConfigType type) { + Clay__DebugElementConfigTypeLabelConfig config = Clay__DebugGetElementConfigTypeLabel(type); + Clay_Color backgroundColor = config.color; + backgroundColor.a = 90; + CLAY_AUTO_ID({ .layout = { .sizing = { .width = CLAY_SIZING_GROW(0) }, .padding = CLAY_PADDING_ALL(CLAY__DEBUGVIEW_OUTER_PADDING), .childAlignment = { .y = CLAY_ALIGN_Y_CENTER } } }) { + CLAY_AUTO_ID({ .layout = { .padding = { 8, 8, 2, 2 } }, .backgroundColor = backgroundColor, .cornerRadius = CLAY_CORNER_RADIUS(4), .border = { .color = config.color, .width = { 1, 1, 1, 1, 0 } } }) { + CLAY_TEXT(config.label, CLAY_TEXT_CONFIG({ .textColor = CLAY__DEBUGVIEW_COLOR_4, .fontSize = 16 })); + } + CLAY_AUTO_ID({ .layout = { .sizing = { .width = CLAY_SIZING_GROW(0) } } }) {} + CLAY_TEXT(elementId, CLAY_TEXT_CONFIG({ .textColor = CLAY__DEBUGVIEW_COLOR_3, .fontSize = 16, .wrapMode = CLAY_TEXT_WRAP_NONE })); + } +} + +void Clay__RenderDebugViewColor(Clay_Color color, Clay_TextElementConfig *textConfig) { + CLAY_AUTO_ID({ .layout = { .childAlignment = {.y = CLAY_ALIGN_Y_CENTER} } }) { + CLAY_TEXT(CLAY_STRING("{ r: "), textConfig); + CLAY_TEXT(Clay__IntToString(color.r), textConfig); + CLAY_TEXT(CLAY_STRING(", g: "), textConfig); + CLAY_TEXT(Clay__IntToString(color.g), textConfig); + CLAY_TEXT(CLAY_STRING(", b: "), textConfig); + CLAY_TEXT(Clay__IntToString(color.b), textConfig); + CLAY_TEXT(CLAY_STRING(", a: "), textConfig); + CLAY_TEXT(Clay__IntToString(color.a), textConfig); + CLAY_TEXT(CLAY_STRING(" }"), textConfig); + CLAY_AUTO_ID({ .layout = { .sizing = { .width = CLAY_SIZING_FIXED(10) } } }) {} + CLAY_AUTO_ID({ .layout = { .sizing = { CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_ROW_HEIGHT - 8), CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_ROW_HEIGHT - 8)} }, .backgroundColor = color, .cornerRadius = CLAY_CORNER_RADIUS(4), .border = { .color = CLAY__DEBUGVIEW_COLOR_4, .width = { 1, 1, 1, 1, 0 } } }) {} + } +} + +void Clay__RenderDebugViewCornerRadius(Clay_CornerRadius cornerRadius, Clay_TextElementConfig *textConfig) { + CLAY_AUTO_ID({ .layout = { .childAlignment = {.y = CLAY_ALIGN_Y_CENTER} } }) { + CLAY_TEXT(CLAY_STRING("{ topLeft: "), textConfig); + CLAY_TEXT(Clay__IntToString(cornerRadius.topLeft), textConfig); + CLAY_TEXT(CLAY_STRING(", topRight: "), textConfig); + CLAY_TEXT(Clay__IntToString(cornerRadius.topRight), textConfig); + CLAY_TEXT(CLAY_STRING(", bottomLeft: "), textConfig); + CLAY_TEXT(Clay__IntToString(cornerRadius.bottomLeft), textConfig); + CLAY_TEXT(CLAY_STRING(", bottomRight: "), textConfig); + CLAY_TEXT(Clay__IntToString(cornerRadius.bottomRight), textConfig); + CLAY_TEXT(CLAY_STRING(" }"), textConfig); + } +} + +void HandleDebugViewCloseButtonInteraction(Clay_ElementId elementId, Clay_PointerData pointerInfo, void *userData) { + Clay_Context* context = Clay_GetCurrentContext(); + (void) elementId; (void) pointerInfo; (void) userData; + if (pointerInfo.state == CLAY_POINTER_DATA_PRESSED_THIS_FRAME) { + context->debugModeEnabled = false; + } +} + +void Clay__RenderDebugView(void) { + Clay_Context* context = Clay_GetCurrentContext(); + Clay_ElementId closeButtonId = Clay__HashString(CLAY_STRING("Clay__DebugViewTopHeaderCloseButtonOuter"), 0); + if (context->pointerInfo.state == CLAY_POINTER_DATA_PRESSED_THIS_FRAME) { + for (int32_t i = 0; i < context->pointerOverIds.length; ++i) { + Clay_ElementId *elementId = Clay_ElementIdArray_Get(&context->pointerOverIds, i); + if (elementId->id == closeButtonId.id) { + context->debugModeEnabled = false; + return; + } + } + } + + uint32_t initialRootsLength = context->layoutElementTreeRoots.length; + uint32_t initialElementsLength = context->layoutElements.length; + Clay_TextElementConfig *infoTextConfig = CLAY_TEXT_CONFIG({ .textColor = CLAY__DEBUGVIEW_COLOR_4, .fontSize = 16, .wrapMode = CLAY_TEXT_WRAP_NONE }); + Clay_TextElementConfig *infoTitleConfig = CLAY_TEXT_CONFIG({ .textColor = CLAY__DEBUGVIEW_COLOR_3, .fontSize = 16, .wrapMode = CLAY_TEXT_WRAP_NONE }); + Clay_ElementId scrollId = Clay__HashString(CLAY_STRING("Clay__DebugViewOuterScrollPane"), 0); + float scrollYOffset = 0; + bool pointerInDebugView = context->pointerInfo.position.y < context->layoutDimensions.height - 300; + for (int32_t i = 0; i < context->scrollContainerDatas.length; ++i) { + Clay__ScrollContainerDataInternal *scrollContainerData = Clay__ScrollContainerDataInternalArray_Get(&context->scrollContainerDatas, i); + if (scrollContainerData->elementId == scrollId.id) { + if (!context->externalScrollHandlingEnabled) { + scrollYOffset = scrollContainerData->scrollPosition.y; + } else { + pointerInDebugView = context->pointerInfo.position.y + scrollContainerData->scrollPosition.y < context->layoutDimensions.height - 300; + } + break; + } + } + int32_t highlightedRow = pointerInDebugView + ? (int32_t)((context->pointerInfo.position.y - scrollYOffset) / (float)CLAY__DEBUGVIEW_ROW_HEIGHT) - 1 + : -1; + if (context->pointerInfo.position.x < context->layoutDimensions.width - (float)Clay__debugViewWidth) { + highlightedRow = -1; + } + Clay__RenderDebugLayoutData layoutData = CLAY__DEFAULT_STRUCT; + CLAY(CLAY_ID("Clay__DebugView"), { + .layout = { .sizing = { CLAY_SIZING_FIXED((float)Clay__debugViewWidth) , CLAY_SIZING_FIXED(context->layoutDimensions.height) }, .layoutDirection = CLAY_TOP_TO_BOTTOM }, + .floating = { .zIndex = 32765, .attachPoints = { .element = CLAY_ATTACH_POINT_LEFT_CENTER, .parent = CLAY_ATTACH_POINT_RIGHT_CENTER }, .attachTo = CLAY_ATTACH_TO_ROOT, .clipTo = CLAY_CLIP_TO_ATTACHED_PARENT }, + .border = { .color = CLAY__DEBUGVIEW_COLOR_3, .width = { .bottom = 1 } } + }) { + CLAY_AUTO_ID({ .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_ROW_HEIGHT)}, .padding = {CLAY__DEBUGVIEW_OUTER_PADDING, CLAY__DEBUGVIEW_OUTER_PADDING, 0, 0 }, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER} }, .backgroundColor = CLAY__DEBUGVIEW_COLOR_2 }) { + CLAY_TEXT(CLAY_STRING("Clay Debug Tools"), infoTextConfig); + CLAY_AUTO_ID({ .layout = { .sizing = { .width = CLAY_SIZING_GROW(0) } } }) {} + // Close button + CLAY_AUTO_ID({ + .layout = { .sizing = {CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_ROW_HEIGHT - 10), CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_ROW_HEIGHT - 10)}, .childAlignment = {CLAY_ALIGN_X_CENTER, CLAY_ALIGN_Y_CENTER} }, + .backgroundColor = {217,91,67,80}, + .cornerRadius = CLAY_CORNER_RADIUS(4), + .border = { .color = { 217,91,67,255 }, .width = { 1, 1, 1, 1, 0 } }, + }) { + Clay_OnHover(HandleDebugViewCloseButtonInteraction, 0); + CLAY_TEXT(CLAY_STRING("x"), CLAY_TEXT_CONFIG({ .textColor = CLAY__DEBUGVIEW_COLOR_4, .fontSize = 16 })); + } + } + CLAY_AUTO_ID({ .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_FIXED(1)} }, .backgroundColor = CLAY__DEBUGVIEW_COLOR_3 } ) {} + CLAY(scrollId, { .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0)} }, .clip = { .horizontal = true, .vertical = true, .childOffset = Clay_GetScrollOffset() } }) { + CLAY_AUTO_ID({ .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0)}, .layoutDirection = CLAY_TOP_TO_BOTTOM }, .backgroundColor = ((initialElementsLength + initialRootsLength) & 1) == 0 ? CLAY__DEBUGVIEW_COLOR_2 : CLAY__DEBUGVIEW_COLOR_1 }) { + Clay_ElementId panelContentsId = Clay__HashString(CLAY_STRING("Clay__DebugViewPaneOuter"), 0); + // Element list + CLAY(panelContentsId, { .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0)} }, .floating = { .zIndex = 32766, .pointerCaptureMode = CLAY_POINTER_CAPTURE_MODE_PASSTHROUGH, .attachTo = CLAY_ATTACH_TO_PARENT, .clipTo = CLAY_CLIP_TO_ATTACHED_PARENT } }) { + CLAY_AUTO_ID({ .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_GROW(0)}, .padding = { CLAY__DEBUGVIEW_OUTER_PADDING, CLAY__DEBUGVIEW_OUTER_PADDING, 0, 0 }, .layoutDirection = CLAY_TOP_TO_BOTTOM } }) { + layoutData = Clay__RenderDebugLayoutElementsList((int32_t)initialRootsLength, highlightedRow); + } + } + float contentWidth = Clay__GetHashMapItem(panelContentsId.id)->layoutElement->dimensions.width; + CLAY_AUTO_ID({ .layout = { .sizing = {.width = CLAY_SIZING_FIXED(contentWidth) }, .layoutDirection = CLAY_TOP_TO_BOTTOM } }) {} + for (int32_t i = 0; i < layoutData.rowCount; i++) { + Clay_Color rowColor = (i & 1) == 0 ? CLAY__DEBUGVIEW_COLOR_2 : CLAY__DEBUGVIEW_COLOR_1; + if (i == layoutData.selectedElementRowIndex) { + rowColor = CLAY__DEBUGVIEW_COLOR_SELECTED_ROW; + } + if (i == highlightedRow) { + rowColor.r *= 1.25f; + rowColor.g *= 1.25f; + rowColor.b *= 1.25f; + } + CLAY_AUTO_ID({ .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_ROW_HEIGHT)}, .layoutDirection = CLAY_TOP_TO_BOTTOM }, .backgroundColor = rowColor } ) {} + } + } + } + CLAY_AUTO_ID({ .layout = { .sizing = {.width = CLAY_SIZING_GROW(0), .height = CLAY_SIZING_FIXED(1)} }, .backgroundColor = CLAY__DEBUGVIEW_COLOR_3 }) {} + if (context->debugSelectedElementId != 0) { + Clay_LayoutElementHashMapItem *selectedItem = Clay__GetHashMapItem(context->debugSelectedElementId); + CLAY_AUTO_ID({ + .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_FIXED(300)}, .layoutDirection = CLAY_TOP_TO_BOTTOM }, + .backgroundColor = CLAY__DEBUGVIEW_COLOR_2 , + .clip = { .vertical = true, .childOffset = Clay_GetScrollOffset() }, + .border = { .color = CLAY__DEBUGVIEW_COLOR_3, .width = { .betweenChildren = 1 } } + }) { + CLAY_AUTO_ID({ .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_ROW_HEIGHT + 8)}, .padding = {CLAY__DEBUGVIEW_OUTER_PADDING, CLAY__DEBUGVIEW_OUTER_PADDING, 0, 0 }, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER} } }) { + CLAY_TEXT(CLAY_STRING("Layout Config"), infoTextConfig); + CLAY_AUTO_ID({ .layout = { .sizing = { .width = CLAY_SIZING_GROW(0) } } }) {} + if (selectedItem->elementId.stringId.length != 0) { + CLAY_TEXT(selectedItem->elementId.stringId, infoTitleConfig); + if (selectedItem->elementId.offset != 0) { + CLAY_TEXT(CLAY_STRING(" ("), infoTitleConfig); + CLAY_TEXT(Clay__IntToString(selectedItem->elementId.offset), infoTitleConfig); + CLAY_TEXT(CLAY_STRING(")"), infoTitleConfig); + } + } + } + Clay_Padding attributeConfigPadding = {CLAY__DEBUGVIEW_OUTER_PADDING, CLAY__DEBUGVIEW_OUTER_PADDING, 8, 8}; + // Clay_LayoutConfig debug info + CLAY_AUTO_ID({ .layout = { .padding = attributeConfigPadding, .childGap = 8, .layoutDirection = CLAY_TOP_TO_BOTTOM } }) { + // .boundingBox + CLAY_TEXT(CLAY_STRING("Bounding Box"), infoTitleConfig); + CLAY_AUTO_ID({ .layout = { .layoutDirection = CLAY_LEFT_TO_RIGHT } }) { + CLAY_TEXT(CLAY_STRING("{ x: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(selectedItem->boundingBox.x), infoTextConfig); + CLAY_TEXT(CLAY_STRING(", y: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(selectedItem->boundingBox.y), infoTextConfig); + CLAY_TEXT(CLAY_STRING(", width: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(selectedItem->boundingBox.width), infoTextConfig); + CLAY_TEXT(CLAY_STRING(", height: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(selectedItem->boundingBox.height), infoTextConfig); + CLAY_TEXT(CLAY_STRING(" }"), infoTextConfig); + } + // .layoutDirection + CLAY_TEXT(CLAY_STRING("Layout Direction"), infoTitleConfig); + Clay_LayoutConfig *layoutConfig = selectedItem->layoutElement->layoutConfig; + CLAY_TEXT(layoutConfig->layoutDirection == CLAY_TOP_TO_BOTTOM ? CLAY_STRING("TOP_TO_BOTTOM") : CLAY_STRING("LEFT_TO_RIGHT"), infoTextConfig); + // .sizing + CLAY_TEXT(CLAY_STRING("Sizing"), infoTitleConfig); + CLAY_AUTO_ID({ .layout = { .layoutDirection = CLAY_LEFT_TO_RIGHT } }) { + CLAY_TEXT(CLAY_STRING("width: "), infoTextConfig); + Clay__RenderDebugLayoutSizing(layoutConfig->sizing.width, infoTextConfig); + } + CLAY_AUTO_ID({ .layout = { .layoutDirection = CLAY_LEFT_TO_RIGHT } }) { + CLAY_TEXT(CLAY_STRING("height: "), infoTextConfig); + Clay__RenderDebugLayoutSizing(layoutConfig->sizing.height, infoTextConfig); + } + // .padding + CLAY_TEXT(CLAY_STRING("Padding"), infoTitleConfig); + CLAY(CLAY_ID("Clay__DebugViewElementInfoPadding"), { }) { + CLAY_TEXT(CLAY_STRING("{ left: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(layoutConfig->padding.left), infoTextConfig); + CLAY_TEXT(CLAY_STRING(", right: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(layoutConfig->padding.right), infoTextConfig); + CLAY_TEXT(CLAY_STRING(", top: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(layoutConfig->padding.top), infoTextConfig); + CLAY_TEXT(CLAY_STRING(", bottom: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(layoutConfig->padding.bottom), infoTextConfig); + CLAY_TEXT(CLAY_STRING(" }"), infoTextConfig); + } + // .childGap + CLAY_TEXT(CLAY_STRING("Child Gap"), infoTitleConfig); + CLAY_TEXT(Clay__IntToString(layoutConfig->childGap), infoTextConfig); + // .childAlignment + CLAY_TEXT(CLAY_STRING("Child Alignment"), infoTitleConfig); + CLAY_AUTO_ID({ .layout = { .layoutDirection = CLAY_LEFT_TO_RIGHT } }) { + CLAY_TEXT(CLAY_STRING("{ x: "), infoTextConfig); + Clay_String alignX = CLAY_STRING("LEFT"); + if (layoutConfig->childAlignment.x == CLAY_ALIGN_X_CENTER) { + alignX = CLAY_STRING("CENTER"); + } else if (layoutConfig->childAlignment.x == CLAY_ALIGN_X_RIGHT) { + alignX = CLAY_STRING("RIGHT"); + } + CLAY_TEXT(alignX, infoTextConfig); + CLAY_TEXT(CLAY_STRING(", y: "), infoTextConfig); + Clay_String alignY = CLAY_STRING("TOP"); + if (layoutConfig->childAlignment.y == CLAY_ALIGN_Y_CENTER) { + alignY = CLAY_STRING("CENTER"); + } else if (layoutConfig->childAlignment.y == CLAY_ALIGN_Y_BOTTOM) { + alignY = CLAY_STRING("BOTTOM"); + } + CLAY_TEXT(alignY, infoTextConfig); + CLAY_TEXT(CLAY_STRING(" }"), infoTextConfig); + } + } + for (int32_t elementConfigIndex = 0; elementConfigIndex < selectedItem->layoutElement->elementConfigs.length; ++elementConfigIndex) { + Clay_ElementConfig *elementConfig = Clay__ElementConfigArraySlice_Get(&selectedItem->layoutElement->elementConfigs, elementConfigIndex); + Clay__RenderDebugViewElementConfigHeader(selectedItem->elementId.stringId, elementConfig->type); + switch (elementConfig->type) { + case CLAY__ELEMENT_CONFIG_TYPE_SHARED: { + Clay_SharedElementConfig *sharedConfig = elementConfig->config.sharedElementConfig; + CLAY_AUTO_ID({ .layout = { .padding = attributeConfigPadding, .childGap = 8, .layoutDirection = CLAY_TOP_TO_BOTTOM }}) { + // .backgroundColor + CLAY_TEXT(CLAY_STRING("Background Color"), infoTitleConfig); + Clay__RenderDebugViewColor(sharedConfig->backgroundColor, infoTextConfig); + // .cornerRadius + CLAY_TEXT(CLAY_STRING("Corner Radius"), infoTitleConfig); + Clay__RenderDebugViewCornerRadius(sharedConfig->cornerRadius, infoTextConfig); + } + break; + } + case CLAY__ELEMENT_CONFIG_TYPE_TEXT: { + Clay_TextElementConfig *textConfig = elementConfig->config.textElementConfig; + CLAY_AUTO_ID({ .layout = { .padding = attributeConfigPadding, .childGap = 8, .layoutDirection = CLAY_TOP_TO_BOTTOM } }) { + // .fontSize + CLAY_TEXT(CLAY_STRING("Font Size"), infoTitleConfig); + CLAY_TEXT(Clay__IntToString(textConfig->fontSize), infoTextConfig); + // .fontId + CLAY_TEXT(CLAY_STRING("Font ID"), infoTitleConfig); + CLAY_TEXT(Clay__IntToString(textConfig->fontId), infoTextConfig); + // .lineHeight + CLAY_TEXT(CLAY_STRING("Line Height"), infoTitleConfig); + CLAY_TEXT(textConfig->lineHeight == 0 ? CLAY_STRING("auto") : Clay__IntToString(textConfig->lineHeight), infoTextConfig); + // .letterSpacing + CLAY_TEXT(CLAY_STRING("Letter Spacing"), infoTitleConfig); + CLAY_TEXT(Clay__IntToString(textConfig->letterSpacing), infoTextConfig); + // .wrapMode + CLAY_TEXT(CLAY_STRING("Wrap Mode"), infoTitleConfig); + Clay_String wrapMode = CLAY_STRING("WORDS"); + if (textConfig->wrapMode == CLAY_TEXT_WRAP_NONE) { + wrapMode = CLAY_STRING("NONE"); + } else if (textConfig->wrapMode == CLAY_TEXT_WRAP_NEWLINES) { + wrapMode = CLAY_STRING("NEWLINES"); + } + CLAY_TEXT(wrapMode, infoTextConfig); + // .textAlignment + CLAY_TEXT(CLAY_STRING("Text Alignment"), infoTitleConfig); + Clay_String textAlignment = CLAY_STRING("LEFT"); + if (textConfig->textAlignment == CLAY_TEXT_ALIGN_CENTER) { + textAlignment = CLAY_STRING("CENTER"); + } else if (textConfig->textAlignment == CLAY_TEXT_ALIGN_RIGHT) { + textAlignment = CLAY_STRING("RIGHT"); + } + CLAY_TEXT(textAlignment, infoTextConfig); + // .textColor + CLAY_TEXT(CLAY_STRING("Text Color"), infoTitleConfig); + Clay__RenderDebugViewColor(textConfig->textColor, infoTextConfig); + } + break; + } + case CLAY__ELEMENT_CONFIG_TYPE_ASPECT: { + Clay_AspectRatioElementConfig *aspectRatioConfig = elementConfig->config.aspectRatioElementConfig; + CLAY(CLAY_ID("Clay__DebugViewElementInfoAspectRatioBody"), { .layout = { .padding = attributeConfigPadding, .childGap = 8, .layoutDirection = CLAY_TOP_TO_BOTTOM } }) { + CLAY_TEXT(CLAY_STRING("Aspect Ratio"), infoTitleConfig); + // Aspect Ratio + CLAY(CLAY_ID("Clay__DebugViewElementInfoAspectRatio"), { }) { + CLAY_TEXT(Clay__IntToString(aspectRatioConfig->aspectRatio), infoTextConfig); + CLAY_TEXT(CLAY_STRING("."), infoTextConfig); + float frac = aspectRatioConfig->aspectRatio - (int)(aspectRatioConfig->aspectRatio); + frac *= 100; + if ((int)frac < 10) { + CLAY_TEXT(CLAY_STRING("0"), infoTextConfig); + } + CLAY_TEXT(Clay__IntToString(frac), infoTextConfig); + } + } + break; + } + case CLAY__ELEMENT_CONFIG_TYPE_IMAGE: { + Clay_ImageElementConfig *imageConfig = elementConfig->config.imageElementConfig; + Clay_AspectRatioElementConfig aspectConfig = { 1 }; + if (Clay__ElementHasConfig(selectedItem->layoutElement, CLAY__ELEMENT_CONFIG_TYPE_ASPECT)) { + aspectConfig = *Clay__FindElementConfigWithType(selectedItem->layoutElement, CLAY__ELEMENT_CONFIG_TYPE_ASPECT).aspectRatioElementConfig; + } + CLAY(CLAY_ID("Clay__DebugViewElementInfoImageBody"), { .layout = { .padding = attributeConfigPadding, .childGap = 8, .layoutDirection = CLAY_TOP_TO_BOTTOM } }) { + // Image Preview + CLAY_TEXT(CLAY_STRING("Preview"), infoTitleConfig); + CLAY_AUTO_ID({ .layout = { .sizing = { .width = CLAY_SIZING_GROW(64, 128), .height = CLAY_SIZING_GROW(64, 128) }}, .aspectRatio = aspectConfig, .image = *imageConfig }) {} + } + break; + } + case CLAY__ELEMENT_CONFIG_TYPE_CLIP: { + Clay_ClipElementConfig *clipConfig = elementConfig->config.clipElementConfig; + CLAY_AUTO_ID({ .layout = { .padding = attributeConfigPadding, .childGap = 8, .layoutDirection = CLAY_TOP_TO_BOTTOM } }) { + // .vertical + CLAY_TEXT(CLAY_STRING("Vertical"), infoTitleConfig); + CLAY_TEXT(clipConfig->vertical ? CLAY_STRING("true") : CLAY_STRING("false") , infoTextConfig); + // .horizontal + CLAY_TEXT(CLAY_STRING("Horizontal"), infoTitleConfig); + CLAY_TEXT(clipConfig->horizontal ? CLAY_STRING("true") : CLAY_STRING("false") , infoTextConfig); + } + break; + } + case CLAY__ELEMENT_CONFIG_TYPE_FLOATING: { + Clay_FloatingElementConfig *floatingConfig = elementConfig->config.floatingElementConfig; + CLAY_AUTO_ID({ .layout = { .padding = attributeConfigPadding, .childGap = 8, .layoutDirection = CLAY_TOP_TO_BOTTOM } }) { + // .offset + CLAY_TEXT(CLAY_STRING("Offset"), infoTitleConfig); + CLAY_AUTO_ID({ .layout = { .layoutDirection = CLAY_LEFT_TO_RIGHT } }) { + CLAY_TEXT(CLAY_STRING("{ x: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(floatingConfig->offset.x), infoTextConfig); + CLAY_TEXT(CLAY_STRING(", y: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(floatingConfig->offset.y), infoTextConfig); + CLAY_TEXT(CLAY_STRING(" }"), infoTextConfig); + } + // .expand + CLAY_TEXT(CLAY_STRING("Expand"), infoTitleConfig); + CLAY_AUTO_ID({ .layout = { .layoutDirection = CLAY_LEFT_TO_RIGHT } }) { + CLAY_TEXT(CLAY_STRING("{ width: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(floatingConfig->expand.width), infoTextConfig); + CLAY_TEXT(CLAY_STRING(", height: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(floatingConfig->expand.height), infoTextConfig); + CLAY_TEXT(CLAY_STRING(" }"), infoTextConfig); + } + // .zIndex + CLAY_TEXT(CLAY_STRING("z-index"), infoTitleConfig); + CLAY_TEXT(Clay__IntToString(floatingConfig->zIndex), infoTextConfig); + // .parentId + CLAY_TEXT(CLAY_STRING("Parent"), infoTitleConfig); + Clay_LayoutElementHashMapItem *hashItem = Clay__GetHashMapItem(floatingConfig->parentId); + CLAY_TEXT(hashItem->elementId.stringId, infoTextConfig); + // .attachPoints + CLAY_TEXT(CLAY_STRING("Attach Points"), infoTitleConfig); + CLAY_AUTO_ID({ .layout = { .layoutDirection = CLAY_LEFT_TO_RIGHT } }) { + CLAY_TEXT(CLAY_STRING("{ element: "), infoTextConfig); + Clay_String attachPointElement = CLAY_STRING("LEFT_TOP"); + if (floatingConfig->attachPoints.element == CLAY_ATTACH_POINT_LEFT_CENTER) { + attachPointElement = CLAY_STRING("LEFT_CENTER"); + } else if (floatingConfig->attachPoints.element == CLAY_ATTACH_POINT_LEFT_BOTTOM) { + attachPointElement = CLAY_STRING("LEFT_BOTTOM"); + } else if (floatingConfig->attachPoints.element == CLAY_ATTACH_POINT_CENTER_TOP) { + attachPointElement = CLAY_STRING("CENTER_TOP"); + } else if (floatingConfig->attachPoints.element == CLAY_ATTACH_POINT_CENTER_CENTER) { + attachPointElement = CLAY_STRING("CENTER_CENTER"); + } else if (floatingConfig->attachPoints.element == CLAY_ATTACH_POINT_CENTER_BOTTOM) { + attachPointElement = CLAY_STRING("CENTER_BOTTOM"); + } else if (floatingConfig->attachPoints.element == CLAY_ATTACH_POINT_RIGHT_TOP) { + attachPointElement = CLAY_STRING("RIGHT_TOP"); + } else if (floatingConfig->attachPoints.element == CLAY_ATTACH_POINT_RIGHT_CENTER) { + attachPointElement = CLAY_STRING("RIGHT_CENTER"); + } else if (floatingConfig->attachPoints.element == CLAY_ATTACH_POINT_RIGHT_BOTTOM) { + attachPointElement = CLAY_STRING("RIGHT_BOTTOM"); + } + CLAY_TEXT(attachPointElement, infoTextConfig); + Clay_String attachPointParent = CLAY_STRING("LEFT_TOP"); + if (floatingConfig->attachPoints.parent == CLAY_ATTACH_POINT_LEFT_CENTER) { + attachPointParent = CLAY_STRING("LEFT_CENTER"); + } else if (floatingConfig->attachPoints.parent == CLAY_ATTACH_POINT_LEFT_BOTTOM) { + attachPointParent = CLAY_STRING("LEFT_BOTTOM"); + } else if (floatingConfig->attachPoints.parent == CLAY_ATTACH_POINT_CENTER_TOP) { + attachPointParent = CLAY_STRING("CENTER_TOP"); + } else if (floatingConfig->attachPoints.parent == CLAY_ATTACH_POINT_CENTER_CENTER) { + attachPointParent = CLAY_STRING("CENTER_CENTER"); + } else if (floatingConfig->attachPoints.parent == CLAY_ATTACH_POINT_CENTER_BOTTOM) { + attachPointParent = CLAY_STRING("CENTER_BOTTOM"); + } else if (floatingConfig->attachPoints.parent == CLAY_ATTACH_POINT_RIGHT_TOP) { + attachPointParent = CLAY_STRING("RIGHT_TOP"); + } else if (floatingConfig->attachPoints.parent == CLAY_ATTACH_POINT_RIGHT_CENTER) { + attachPointParent = CLAY_STRING("RIGHT_CENTER"); + } else if (floatingConfig->attachPoints.parent == CLAY_ATTACH_POINT_RIGHT_BOTTOM) { + attachPointParent = CLAY_STRING("RIGHT_BOTTOM"); + } + CLAY_TEXT(CLAY_STRING(", parent: "), infoTextConfig); + CLAY_TEXT(attachPointParent, infoTextConfig); + CLAY_TEXT(CLAY_STRING(" }"), infoTextConfig); + } + // .pointerCaptureMode + CLAY_TEXT(CLAY_STRING("Pointer Capture Mode"), infoTitleConfig); + Clay_String pointerCaptureMode = CLAY_STRING("NONE"); + if (floatingConfig->pointerCaptureMode == CLAY_POINTER_CAPTURE_MODE_PASSTHROUGH) { + pointerCaptureMode = CLAY_STRING("PASSTHROUGH"); + } + CLAY_TEXT(pointerCaptureMode, infoTextConfig); + // .attachTo + CLAY_TEXT(CLAY_STRING("Attach To"), infoTitleConfig); + Clay_String attachTo = CLAY_STRING("NONE"); + if (floatingConfig->attachTo == CLAY_ATTACH_TO_PARENT) { + attachTo = CLAY_STRING("PARENT"); + } else if (floatingConfig->attachTo == CLAY_ATTACH_TO_ELEMENT_WITH_ID) { + attachTo = CLAY_STRING("ELEMENT_WITH_ID"); + } else if (floatingConfig->attachTo == CLAY_ATTACH_TO_ROOT) { + attachTo = CLAY_STRING("ROOT"); + } + CLAY_TEXT(attachTo, infoTextConfig); + // .clipTo + CLAY_TEXT(CLAY_STRING("Clip To"), infoTitleConfig); + Clay_String clipTo = CLAY_STRING("ATTACHED_PARENT"); + if (floatingConfig->clipTo == CLAY_CLIP_TO_NONE) { + clipTo = CLAY_STRING("NONE"); + } + CLAY_TEXT(clipTo, infoTextConfig); + } + break; + } + case CLAY__ELEMENT_CONFIG_TYPE_BORDER: { + Clay_BorderElementConfig *borderConfig = elementConfig->config.borderElementConfig; + CLAY(CLAY_ID("Clay__DebugViewElementInfoBorderBody"), { .layout = { .padding = attributeConfigPadding, .childGap = 8, .layoutDirection = CLAY_TOP_TO_BOTTOM } }) { + CLAY_TEXT(CLAY_STRING("Border Widths"), infoTitleConfig); + CLAY_AUTO_ID({ .layout = { .layoutDirection = CLAY_LEFT_TO_RIGHT } }) { + CLAY_TEXT(CLAY_STRING("{ left: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(borderConfig->width.left), infoTextConfig); + CLAY_TEXT(CLAY_STRING(", right: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(borderConfig->width.right), infoTextConfig); + CLAY_TEXT(CLAY_STRING(", top: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(borderConfig->width.top), infoTextConfig); + CLAY_TEXT(CLAY_STRING(", bottom: "), infoTextConfig); + CLAY_TEXT(Clay__IntToString(borderConfig->width.bottom), infoTextConfig); + CLAY_TEXT(CLAY_STRING(" }"), infoTextConfig); + } + // .textColor + CLAY_TEXT(CLAY_STRING("Border Color"), infoTitleConfig); + Clay__RenderDebugViewColor(borderConfig->color, infoTextConfig); + } + break; + } + case CLAY__ELEMENT_CONFIG_TYPE_CUSTOM: + default: break; + } + } + } + } else { + CLAY(CLAY_ID("Clay__DebugViewWarningsScrollPane"), { .layout = { .sizing = {CLAY_SIZING_GROW(0), CLAY_SIZING_FIXED(300)}, .childGap = 6, .layoutDirection = CLAY_TOP_TO_BOTTOM }, .backgroundColor = CLAY__DEBUGVIEW_COLOR_2, .clip = { .horizontal = true, .vertical = true, .childOffset = Clay_GetScrollOffset() } }) { + Clay_TextElementConfig *warningConfig = CLAY_TEXT_CONFIG({ .textColor = CLAY__DEBUGVIEW_COLOR_4, .fontSize = 16, .wrapMode = CLAY_TEXT_WRAP_NONE }); + CLAY(CLAY_ID("Clay__DebugViewWarningItemHeader"), { .layout = { .sizing = {.height = CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_ROW_HEIGHT)}, .padding = {CLAY__DEBUGVIEW_OUTER_PADDING, CLAY__DEBUGVIEW_OUTER_PADDING, 0, 0 }, .childGap = 8, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER} } }) { + CLAY_TEXT(CLAY_STRING("Warnings"), warningConfig); + } + CLAY(CLAY_ID("Clay__DebugViewWarningsTopBorder"), { .layout = { .sizing = { .width = CLAY_SIZING_GROW(0), .height = CLAY_SIZING_FIXED(1)} }, .backgroundColor = {200, 200, 200, 255} }) {} + int32_t previousWarningsLength = context->warnings.length; + for (int32_t i = 0; i < previousWarningsLength; i++) { + Clay__Warning warning = context->warnings.internalArray[i]; + CLAY(CLAY_IDI("Clay__DebugViewWarningItem", i), { .layout = { .sizing = {.height = CLAY_SIZING_FIXED(CLAY__DEBUGVIEW_ROW_HEIGHT)}, .padding = {CLAY__DEBUGVIEW_OUTER_PADDING, CLAY__DEBUGVIEW_OUTER_PADDING, 0, 0 }, .childGap = 8, .childAlignment = {.y = CLAY_ALIGN_Y_CENTER} } }) { + CLAY_TEXT(warning.baseMessage, warningConfig); + if (warning.dynamicMessage.length > 0) { + CLAY_TEXT(warning.dynamicMessage, warningConfig); + } + } + } + } + } + } +} +#pragma endregion + +uint32_t Clay__debugViewWidth = 400; +Clay_Color Clay__debugViewHighlightColor = { 168, 66, 28, 100 }; + +Clay__WarningArray Clay__WarningArray_Allocate_Arena(int32_t capacity, Clay_Arena *arena) { + size_t totalSizeBytes = capacity * sizeof(Clay_String); + Clay__WarningArray array = {.capacity = capacity, .length = 0}; + uintptr_t nextAllocOffset = arena->nextAllocation + (64 - (arena->nextAllocation % 64)); + if (nextAllocOffset + totalSizeBytes <= arena->capacity) { + array.internalArray = (Clay__Warning*)((uintptr_t)arena->memory + (uintptr_t)nextAllocOffset); + arena->nextAllocation = nextAllocOffset + totalSizeBytes; + } + else { + Clay__currentContext->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_ARENA_CAPACITY_EXCEEDED, + .errorText = CLAY_STRING("Clay attempted to allocate memory in its arena, but ran out of capacity. Try increasing the capacity of the arena passed to Clay_Initialize()"), + .userData = Clay__currentContext->errorHandler.userData }); + } + return array; +} + +Clay__Warning *Clay__WarningArray_Add(Clay__WarningArray *array, Clay__Warning item) +{ + if (array->length < array->capacity) { + array->internalArray[array->length++] = item; + return &array->internalArray[array->length - 1]; + } + return &CLAY__WARNING_DEFAULT; +} + +void* Clay__Array_Allocate_Arena(int32_t capacity, uint32_t itemSize, Clay_Arena *arena) +{ + size_t totalSizeBytes = capacity * itemSize; + uintptr_t nextAllocOffset = arena->nextAllocation + ((64 - (arena->nextAllocation % 64)) & 63); + if (nextAllocOffset + totalSizeBytes <= arena->capacity) { + arena->nextAllocation = nextAllocOffset + totalSizeBytes; + return (void*)((uintptr_t)arena->memory + (uintptr_t)nextAllocOffset); + } + else { + Clay__currentContext->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_ARENA_CAPACITY_EXCEEDED, + .errorText = CLAY_STRING("Clay attempted to allocate memory in its arena, but ran out of capacity. Try increasing the capacity of the arena passed to Clay_Initialize()"), + .userData = Clay__currentContext->errorHandler.userData }); + } + return CLAY__NULL; +} + +bool Clay__Array_RangeCheck(int32_t index, int32_t length) +{ + if (index < length && index >= 0) { + return true; + } + Clay_Context* context = Clay_GetCurrentContext(); + context->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_INTERNAL_ERROR, + .errorText = CLAY_STRING("Clay attempted to make an out of bounds array access. This is an internal error and is likely a bug."), + .userData = context->errorHandler.userData }); + return false; +} + +bool Clay__Array_AddCapacityCheck(int32_t length, int32_t capacity) +{ + if (length < capacity) { + return true; + } + Clay_Context* context = Clay_GetCurrentContext(); + context->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_INTERNAL_ERROR, + .errorText = CLAY_STRING("Clay attempted to make an out of bounds array access. This is an internal error and is likely a bug."), + .userData = context->errorHandler.userData }); + return false; +} + +// PUBLIC API FROM HERE --------------------------------------- + +CLAY_WASM_EXPORT("Clay_MinMemorySize") +uint32_t Clay_MinMemorySize(void) { + Clay_Context fakeContext = { + .maxElementCount = Clay__defaultMaxElementCount, + .maxMeasureTextCacheWordCount = Clay__defaultMaxMeasureTextWordCacheCount, + .internalArena = { + .capacity = SIZE_MAX, + .memory = NULL, + } + }; + Clay_Context* currentContext = Clay_GetCurrentContext(); + if (currentContext) { + fakeContext.maxElementCount = currentContext->maxElementCount; + fakeContext.maxMeasureTextCacheWordCount = currentContext->maxMeasureTextCacheWordCount; + } + // Reserve space in the arena for the context, important for calculating min memory size correctly + Clay__Context_Allocate_Arena(&fakeContext.internalArena); + Clay__InitializePersistentMemory(&fakeContext); + Clay__InitializeEphemeralMemory(&fakeContext); + return (uint32_t)fakeContext.internalArena.nextAllocation + 128; +} + +CLAY_WASM_EXPORT("Clay_CreateArenaWithCapacityAndMemory") +Clay_Arena Clay_CreateArenaWithCapacityAndMemory(size_t capacity, void *memory) { + Clay_Arena arena = { + .capacity = capacity, + .memory = (char *)memory + }; + return arena; +} + +#ifndef CLAY_WASM +void Clay_SetMeasureTextFunction(Clay_Dimensions (*measureTextFunction)(Clay_StringSlice text, Clay_TextElementConfig *config, void *userData), void *userData) { + Clay_Context* context = Clay_GetCurrentContext(); + Clay__MeasureText = measureTextFunction; + context->measureTextUserData = userData; +} +void Clay_SetQueryScrollOffsetFunction(Clay_Vector2 (*queryScrollOffsetFunction)(uint32_t elementId, void *userData), void *userData) { + Clay_Context* context = Clay_GetCurrentContext(); + Clay__QueryScrollOffset = queryScrollOffsetFunction; + context->queryScrollOffsetUserData = userData; +} +#endif + +CLAY_WASM_EXPORT("Clay_SetLayoutDimensions") +void Clay_SetLayoutDimensions(Clay_Dimensions dimensions) { + Clay_GetCurrentContext()->layoutDimensions = dimensions; +} + +CLAY_WASM_EXPORT("Clay_SetPointerState") +void Clay_SetPointerState(Clay_Vector2 position, bool isPointerDown) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->booleanWarnings.maxElementsExceeded) { + return; + } + context->pointerInfo.position = position; + context->pointerOverIds.length = 0; + Clay__int32_tArray dfsBuffer = context->layoutElementChildrenBuffer; + for (int32_t rootIndex = context->layoutElementTreeRoots.length - 1; rootIndex >= 0; --rootIndex) { + dfsBuffer.length = 0; + Clay__LayoutElementTreeRoot *root = Clay__LayoutElementTreeRootArray_Get(&context->layoutElementTreeRoots, rootIndex); + Clay__int32_tArray_Add(&dfsBuffer, (int32_t)root->layoutElementIndex); + context->treeNodeVisited.internalArray[0] = false; + bool found = false; + while (dfsBuffer.length > 0) { + if (context->treeNodeVisited.internalArray[dfsBuffer.length - 1]) { + dfsBuffer.length--; + continue; + } + context->treeNodeVisited.internalArray[dfsBuffer.length - 1] = true; + Clay_LayoutElement *currentElement = Clay_LayoutElementArray_Get(&context->layoutElements, Clay__int32_tArray_GetValue(&dfsBuffer, (int)dfsBuffer.length - 1)); + Clay_LayoutElementHashMapItem *mapItem = Clay__GetHashMapItem(currentElement->id); // TODO think of a way around this, maybe the fact that it's essentially a binary tree limits the cost, but the worst case is not great + int32_t clipElementId = Clay__int32_tArray_GetValue(&context->layoutElementClipElementIds, (int32_t)(currentElement - context->layoutElements.internalArray)); + Clay_LayoutElementHashMapItem *clipItem = Clay__GetHashMapItem(clipElementId); + if (mapItem) { + Clay_BoundingBox elementBox = mapItem->boundingBox; + elementBox.x -= root->pointerOffset.x; + elementBox.y -= root->pointerOffset.y; + if ((Clay__PointIsInsideRect(position, elementBox)) && (clipElementId == 0 || (Clay__PointIsInsideRect(position, clipItem->boundingBox)) || context->externalScrollHandlingEnabled)) { + if (mapItem->onHoverFunction) { + mapItem->onHoverFunction(mapItem->elementId, context->pointerInfo, mapItem->hoverFunctionUserData); + } + Clay_ElementIdArray_Add(&context->pointerOverIds, mapItem->elementId); + found = true; + } + if (Clay__ElementHasConfig(currentElement, CLAY__ELEMENT_CONFIG_TYPE_TEXT)) { + dfsBuffer.length--; + continue; + } + for (int32_t i = currentElement->childrenOrTextContent.children.length - 1; i >= 0; --i) { + Clay__int32_tArray_Add(&dfsBuffer, currentElement->childrenOrTextContent.children.elements[i]); + context->treeNodeVisited.internalArray[dfsBuffer.length - 1] = false; // TODO needs to be ranged checked + } + } else { + dfsBuffer.length--; + } + } + + Clay_LayoutElement *rootElement = Clay_LayoutElementArray_Get(&context->layoutElements, root->layoutElementIndex); + if (found && Clay__ElementHasConfig(rootElement, CLAY__ELEMENT_CONFIG_TYPE_FLOATING) && + Clay__FindElementConfigWithType(rootElement, CLAY__ELEMENT_CONFIG_TYPE_FLOATING).floatingElementConfig->pointerCaptureMode == CLAY_POINTER_CAPTURE_MODE_CAPTURE) { + break; + } + } + + if (isPointerDown) { + if (context->pointerInfo.state == CLAY_POINTER_DATA_PRESSED_THIS_FRAME) { + context->pointerInfo.state = CLAY_POINTER_DATA_PRESSED; + } else if (context->pointerInfo.state != CLAY_POINTER_DATA_PRESSED) { + context->pointerInfo.state = CLAY_POINTER_DATA_PRESSED_THIS_FRAME; + } + } else { + if (context->pointerInfo.state == CLAY_POINTER_DATA_RELEASED_THIS_FRAME) { + context->pointerInfo.state = CLAY_POINTER_DATA_RELEASED; + } else if (context->pointerInfo.state != CLAY_POINTER_DATA_RELEASED) { + context->pointerInfo.state = CLAY_POINTER_DATA_RELEASED_THIS_FRAME; + } + } +} + +CLAY_WASM_EXPORT("Clay_Initialize") +Clay_Context* Clay_Initialize(Clay_Arena arena, Clay_Dimensions layoutDimensions, Clay_ErrorHandler errorHandler) { + // Cacheline align memory passed in + uintptr_t baseOffset = 64 - ((uintptr_t)arena.memory % 64); + baseOffset = baseOffset == 64 ? 0 : baseOffset; + arena.memory += baseOffset; + Clay_Context *context = Clay__Context_Allocate_Arena(&arena); + if (context == NULL) return NULL; + // DEFAULTS + Clay_Context *oldContext = Clay_GetCurrentContext(); + *context = CLAY__INIT(Clay_Context) { + .maxElementCount = oldContext ? oldContext->maxElementCount : Clay__defaultMaxElementCount, + .maxMeasureTextCacheWordCount = oldContext ? oldContext->maxMeasureTextCacheWordCount : Clay__defaultMaxMeasureTextWordCacheCount, + .errorHandler = errorHandler.errorHandlerFunction ? errorHandler : CLAY__INIT(Clay_ErrorHandler) { Clay__ErrorHandlerFunctionDefault, 0 }, + .layoutDimensions = layoutDimensions, + .internalArena = arena, + }; + Clay_SetCurrentContext(context); + Clay__InitializePersistentMemory(context); + Clay__InitializeEphemeralMemory(context); + for (int32_t i = 0; i < context->layoutElementsHashMap.capacity; ++i) { + context->layoutElementsHashMap.internalArray[i] = -1; + } + for (int32_t i = 0; i < context->measureTextHashMap.capacity; ++i) { + context->measureTextHashMap.internalArray[i] = 0; + } + context->measureTextHashMapInternal.length = 1; // Reserve the 0 value to mean "no next element" + context->layoutDimensions = layoutDimensions; + return context; +} + +CLAY_WASM_EXPORT("Clay_GetCurrentContext") +Clay_Context* Clay_GetCurrentContext(void) { + return Clay__currentContext; +} + +CLAY_WASM_EXPORT("Clay_SetCurrentContext") +void Clay_SetCurrentContext(Clay_Context* context) { + Clay__currentContext = context; +} + +CLAY_WASM_EXPORT("Clay_GetScrollOffset") +Clay_Vector2 Clay_GetScrollOffset(void) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->booleanWarnings.maxElementsExceeded) { + return CLAY__INIT(Clay_Vector2) CLAY__DEFAULT_STRUCT; + } + Clay_LayoutElement *openLayoutElement = Clay__GetOpenLayoutElement(); + // If the element has no id attached at this point, we need to generate one + if (openLayoutElement->id == 0) { + Clay__GenerateIdForAnonymousElement(openLayoutElement); + } + for (int32_t i = 0; i < context->scrollContainerDatas.length; i++) { + Clay__ScrollContainerDataInternal *mapping = Clay__ScrollContainerDataInternalArray_Get(&context->scrollContainerDatas, i); + if (mapping->layoutElement == openLayoutElement) { + return mapping->scrollPosition; + } + } + return CLAY__INIT(Clay_Vector2) CLAY__DEFAULT_STRUCT; +} + +CLAY_WASM_EXPORT("Clay_UpdateScrollContainers") +void Clay_UpdateScrollContainers(bool enableDragScrolling, Clay_Vector2 scrollDelta, float deltaTime) { + Clay_Context* context = Clay_GetCurrentContext(); + bool isPointerActive = enableDragScrolling && (context->pointerInfo.state == CLAY_POINTER_DATA_PRESSED || context->pointerInfo.state == CLAY_POINTER_DATA_PRESSED_THIS_FRAME); + // Don't apply scroll events to ancestors of the inner element + int32_t highestPriorityElementIndex = -1; + Clay__ScrollContainerDataInternal *highestPriorityScrollData = CLAY__NULL; + for (int32_t i = 0; i < context->scrollContainerDatas.length; i++) { + Clay__ScrollContainerDataInternal *scrollData = Clay__ScrollContainerDataInternalArray_Get(&context->scrollContainerDatas, i); + if (!scrollData->openThisFrame) { + Clay__ScrollContainerDataInternalArray_RemoveSwapback(&context->scrollContainerDatas, i); + continue; + } + scrollData->openThisFrame = false; + Clay_LayoutElementHashMapItem *hashMapItem = Clay__GetHashMapItem(scrollData->elementId); + // Element isn't rendered this frame but scroll offset has been retained + if (!hashMapItem) { + Clay__ScrollContainerDataInternalArray_RemoveSwapback(&context->scrollContainerDatas, i); + continue; + } + + // Touch / click is released + if (!isPointerActive && scrollData->pointerScrollActive) { + float xDiff = scrollData->scrollPosition.x - scrollData->scrollOrigin.x; + if (xDiff < -10 || xDiff > 10) { + scrollData->scrollMomentum.x = (scrollData->scrollPosition.x - scrollData->scrollOrigin.x) / (scrollData->momentumTime * 25); + } + float yDiff = scrollData->scrollPosition.y - scrollData->scrollOrigin.y; + if (yDiff < -10 || yDiff > 10) { + scrollData->scrollMomentum.y = (scrollData->scrollPosition.y - scrollData->scrollOrigin.y) / (scrollData->momentumTime * 25); + } + scrollData->pointerScrollActive = false; + + scrollData->pointerOrigin = CLAY__INIT(Clay_Vector2){0,0}; + scrollData->scrollOrigin = CLAY__INIT(Clay_Vector2){0,0}; + scrollData->momentumTime = 0; + } + + // Apply existing momentum + scrollData->scrollPosition.x += scrollData->scrollMomentum.x; + scrollData->scrollMomentum.x *= 0.95f; + bool scrollOccurred = scrollDelta.x != 0 || scrollDelta.y != 0; + if ((scrollData->scrollMomentum.x > -0.1f && scrollData->scrollMomentum.x < 0.1f) || scrollOccurred) { + scrollData->scrollMomentum.x = 0; + } + scrollData->scrollPosition.x = CLAY__MIN(CLAY__MAX(scrollData->scrollPosition.x, -(CLAY__MAX(scrollData->contentSize.width - scrollData->layoutElement->dimensions.width, 0))), 0); + + scrollData->scrollPosition.y += scrollData->scrollMomentum.y; + scrollData->scrollMomentum.y *= 0.95f; + if ((scrollData->scrollMomentum.y > -0.1f && scrollData->scrollMomentum.y < 0.1f) || scrollOccurred) { + scrollData->scrollMomentum.y = 0; + } + scrollData->scrollPosition.y = CLAY__MIN(CLAY__MAX(scrollData->scrollPosition.y, -(CLAY__MAX(scrollData->contentSize.height - scrollData->layoutElement->dimensions.height, 0))), 0); + + for (int32_t j = 0; j < context->pointerOverIds.length; ++j) { // TODO n & m are small here but this being n*m gives me the creeps + if (scrollData->layoutElement->id == Clay_ElementIdArray_Get(&context->pointerOverIds, j)->id) { + highestPriorityElementIndex = j; + highestPriorityScrollData = scrollData; + } + } + } + + if (highestPriorityElementIndex > -1 && highestPriorityScrollData) { + Clay_LayoutElement *scrollElement = highestPriorityScrollData->layoutElement; + Clay_ClipElementConfig *clipConfig = Clay__FindElementConfigWithType(scrollElement, CLAY__ELEMENT_CONFIG_TYPE_CLIP).clipElementConfig; + bool canScrollVertically = clipConfig->vertical && highestPriorityScrollData->contentSize.height > scrollElement->dimensions.height; + bool canScrollHorizontally = clipConfig->horizontal && highestPriorityScrollData->contentSize.width > scrollElement->dimensions.width; + // Handle wheel scroll + if (canScrollVertically) { + highestPriorityScrollData->scrollPosition.y = highestPriorityScrollData->scrollPosition.y + scrollDelta.y * 10; + } + if (canScrollHorizontally) { + highestPriorityScrollData->scrollPosition.x = highestPriorityScrollData->scrollPosition.x + scrollDelta.x * 10; + } + // Handle click / touch scroll + if (isPointerActive) { + highestPriorityScrollData->scrollMomentum = CLAY__INIT(Clay_Vector2)CLAY__DEFAULT_STRUCT; + if (!highestPriorityScrollData->pointerScrollActive) { + highestPriorityScrollData->pointerOrigin = context->pointerInfo.position; + highestPriorityScrollData->scrollOrigin = highestPriorityScrollData->scrollPosition; + highestPriorityScrollData->pointerScrollActive = true; + } else { + float scrollDeltaX = 0, scrollDeltaY = 0; + if (canScrollHorizontally) { + float oldXScrollPosition = highestPriorityScrollData->scrollPosition.x; + highestPriorityScrollData->scrollPosition.x = highestPriorityScrollData->scrollOrigin.x + (context->pointerInfo.position.x - highestPriorityScrollData->pointerOrigin.x); + highestPriorityScrollData->scrollPosition.x = CLAY__MAX(CLAY__MIN(highestPriorityScrollData->scrollPosition.x, 0), -(highestPriorityScrollData->contentSize.width - highestPriorityScrollData->boundingBox.width)); + scrollDeltaX = highestPriorityScrollData->scrollPosition.x - oldXScrollPosition; + } + if (canScrollVertically) { + float oldYScrollPosition = highestPriorityScrollData->scrollPosition.y; + highestPriorityScrollData->scrollPosition.y = highestPriorityScrollData->scrollOrigin.y + (context->pointerInfo.position.y - highestPriorityScrollData->pointerOrigin.y); + highestPriorityScrollData->scrollPosition.y = CLAY__MAX(CLAY__MIN(highestPriorityScrollData->scrollPosition.y, 0), -(highestPriorityScrollData->contentSize.height - highestPriorityScrollData->boundingBox.height)); + scrollDeltaY = highestPriorityScrollData->scrollPosition.y - oldYScrollPosition; + } + if (scrollDeltaX > -0.1f && scrollDeltaX < 0.1f && scrollDeltaY > -0.1f && scrollDeltaY < 0.1f && highestPriorityScrollData->momentumTime > 0.15f) { + highestPriorityScrollData->momentumTime = 0; + highestPriorityScrollData->pointerOrigin = context->pointerInfo.position; + highestPriorityScrollData->scrollOrigin = highestPriorityScrollData->scrollPosition; + } else { + highestPriorityScrollData->momentumTime += deltaTime; + } + } + } + // Clamp any changes to scroll position to the maximum size of the contents + if (canScrollVertically) { + highestPriorityScrollData->scrollPosition.y = CLAY__MAX(CLAY__MIN(highestPriorityScrollData->scrollPosition.y, 0), -(highestPriorityScrollData->contentSize.height - scrollElement->dimensions.height)); + } + if (canScrollHorizontally) { + highestPriorityScrollData->scrollPosition.x = CLAY__MAX(CLAY__MIN(highestPriorityScrollData->scrollPosition.x, 0), -(highestPriorityScrollData->contentSize.width - scrollElement->dimensions.width)); + } + } +} + +CLAY_WASM_EXPORT("Clay_BeginLayout") +void Clay_BeginLayout(void) { + Clay_Context* context = Clay_GetCurrentContext(); + Clay__InitializeEphemeralMemory(context); + context->generation++; + context->dynamicElementIndex = 0; + // Set up the root container that covers the entire window + Clay_Dimensions rootDimensions = {context->layoutDimensions.width, context->layoutDimensions.height}; + if (context->debugModeEnabled) { + rootDimensions.width -= (float)Clay__debugViewWidth; + } + context->booleanWarnings = CLAY__INIT(Clay_BooleanWarnings) CLAY__DEFAULT_STRUCT; + Clay__OpenElementWithId(CLAY_ID("Clay__RootContainer")); + Clay__ConfigureOpenElement(CLAY__INIT(Clay_ElementDeclaration) { + .layout = { .sizing = {CLAY_SIZING_FIXED((rootDimensions.width)), CLAY_SIZING_FIXED(rootDimensions.height)} } + }); + Clay__int32_tArray_Add(&context->openLayoutElementStack, 0); + Clay__LayoutElementTreeRootArray_Add(&context->layoutElementTreeRoots, CLAY__INIT(Clay__LayoutElementTreeRoot) { .layoutElementIndex = 0 }); +} + +CLAY_WASM_EXPORT("Clay_EndLayout") +Clay_RenderCommandArray Clay_EndLayout(void) { + Clay_Context* context = Clay_GetCurrentContext(); + Clay__CloseElement(); + bool elementsExceededBeforeDebugView = context->booleanWarnings.maxElementsExceeded; + if (context->debugModeEnabled && !elementsExceededBeforeDebugView) { + context->warningsEnabled = false; + Clay__RenderDebugView(); + context->warningsEnabled = true; + } + if (context->booleanWarnings.maxElementsExceeded) { + Clay_String message; + if (!elementsExceededBeforeDebugView) { + message = CLAY_STRING("Clay Error: Layout elements exceeded Clay__maxElementCount after adding the debug-view to the layout."); + } else { + message = CLAY_STRING("Clay Error: Layout elements exceeded Clay__maxElementCount"); + } + Clay__AddRenderCommand(CLAY__INIT(Clay_RenderCommand ) { + .boundingBox = { context->layoutDimensions.width / 2 - 59 * 4, context->layoutDimensions.height / 2, 0, 0 }, + .renderData = { .text = { .stringContents = CLAY__INIT(Clay_StringSlice) { .length = message.length, .chars = message.chars, .baseChars = message.chars }, .textColor = {255, 0, 0, 255}, .fontSize = 16 } }, + .commandType = CLAY_RENDER_COMMAND_TYPE_TEXT + }); + } + if (context->openLayoutElementStack.length > 1) { + context->errorHandler.errorHandlerFunction(CLAY__INIT(Clay_ErrorData) { + .errorType = CLAY_ERROR_TYPE_UNBALANCED_OPEN_CLOSE, + .errorText = CLAY_STRING("There were still open layout elements when EndLayout was called. This results from an unequal number of calls to Clay__OpenElement and Clay__CloseElement."), + .userData = context->errorHandler.userData }); + } + Clay__CalculateFinalLayout(); + return context->renderCommands; +} + +CLAY_WASM_EXPORT("Clay_GetElementId") +Clay_ElementId Clay_GetElementId(Clay_String idString) { + return Clay__HashString(idString, 0); +} + +CLAY_WASM_EXPORT("Clay_GetElementIdWithIndex") +Clay_ElementId Clay_GetElementIdWithIndex(Clay_String idString, uint32_t index) { + return Clay__HashStringWithOffset(idString, index, 0); +} + +bool Clay_Hovered(void) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->booleanWarnings.maxElementsExceeded) { + return false; + } + Clay_LayoutElement *openLayoutElement = Clay__GetOpenLayoutElement(); + // If the element has no id attached at this point, we need to generate one + if (openLayoutElement->id == 0) { + Clay__GenerateIdForAnonymousElement(openLayoutElement); + } + for (int32_t i = 0; i < context->pointerOverIds.length; ++i) { + if (Clay_ElementIdArray_Get(&context->pointerOverIds, i)->id == openLayoutElement->id) { + return true; + } + } + return false; +} + +void Clay_OnHover(void (*onHoverFunction)(Clay_ElementId elementId, Clay_PointerData pointerInfo, void *userData), void *userData) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context->booleanWarnings.maxElementsExceeded) { + return; + } + Clay_LayoutElement *openLayoutElement = Clay__GetOpenLayoutElement(); + if (openLayoutElement->id == 0) { + Clay__GenerateIdForAnonymousElement(openLayoutElement); + } + Clay_LayoutElementHashMapItem *hashMapItem = Clay__GetHashMapItem(openLayoutElement->id); + hashMapItem->onHoverFunction = onHoverFunction; + hashMapItem->hoverFunctionUserData = userData; +} + +CLAY_WASM_EXPORT("Clay_PointerOver") +bool Clay_PointerOver(Clay_ElementId elementId) { // TODO return priority for separating multiple results + Clay_Context* context = Clay_GetCurrentContext(); + for (int32_t i = 0; i < context->pointerOverIds.length; ++i) { + if (Clay_ElementIdArray_Get(&context->pointerOverIds, i)->id == elementId.id) { + return true; + } + } + return false; +} + +CLAY_WASM_EXPORT("Clay_GetScrollContainerData") +Clay_ScrollContainerData Clay_GetScrollContainerData(Clay_ElementId id) { + Clay_Context* context = Clay_GetCurrentContext(); + for (int32_t i = 0; i < context->scrollContainerDatas.length; ++i) { + Clay__ScrollContainerDataInternal *scrollContainerData = Clay__ScrollContainerDataInternalArray_Get(&context->scrollContainerDatas, i); + if (scrollContainerData->elementId == id.id) { + Clay_ClipElementConfig *clipElementConfig = Clay__FindElementConfigWithType(scrollContainerData->layoutElement, CLAY__ELEMENT_CONFIG_TYPE_CLIP).clipElementConfig; + if (!clipElementConfig) { // This can happen on the first frame before a scroll container is declared + return CLAY__INIT(Clay_ScrollContainerData) CLAY__DEFAULT_STRUCT; + } + return CLAY__INIT(Clay_ScrollContainerData) { + .scrollPosition = &scrollContainerData->scrollPosition, + .scrollContainerDimensions = { scrollContainerData->boundingBox.width, scrollContainerData->boundingBox.height }, + .contentDimensions = scrollContainerData->contentSize, + .config = *clipElementConfig, + .found = true + }; + } + } + return CLAY__INIT(Clay_ScrollContainerData) CLAY__DEFAULT_STRUCT; +} + +CLAY_WASM_EXPORT("Clay_GetElementData") +Clay_ElementData Clay_GetElementData(Clay_ElementId id){ + Clay_LayoutElementHashMapItem * item = Clay__GetHashMapItem(id.id); + if(item == &Clay_LayoutElementHashMapItem_DEFAULT) { + return CLAY__INIT(Clay_ElementData) CLAY__DEFAULT_STRUCT; + } + + return CLAY__INIT(Clay_ElementData){ + .boundingBox = item->boundingBox, + .found = true + }; +} + +CLAY_WASM_EXPORT("Clay_SetDebugModeEnabled") +void Clay_SetDebugModeEnabled(bool enabled) { + Clay_Context* context = Clay_GetCurrentContext(); + context->debugModeEnabled = enabled; +} + +CLAY_WASM_EXPORT("Clay_IsDebugModeEnabled") +bool Clay_IsDebugModeEnabled(void) { + Clay_Context* context = Clay_GetCurrentContext(); + return context->debugModeEnabled; +} + +CLAY_WASM_EXPORT("Clay_SetCullingEnabled") +void Clay_SetCullingEnabled(bool enabled) { + Clay_Context* context = Clay_GetCurrentContext(); + context->disableCulling = !enabled; +} + +CLAY_WASM_EXPORT("Clay_SetExternalScrollHandlingEnabled") +void Clay_SetExternalScrollHandlingEnabled(bool enabled) { + Clay_Context* context = Clay_GetCurrentContext(); + context->externalScrollHandlingEnabled = enabled; +} + +CLAY_WASM_EXPORT("Clay_GetMaxElementCount") +int32_t Clay_GetMaxElementCount(void) { + Clay_Context* context = Clay_GetCurrentContext(); + return context->maxElementCount; +} + +CLAY_WASM_EXPORT("Clay_SetMaxElementCount") +void Clay_SetMaxElementCount(int32_t maxElementCount) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context) { + context->maxElementCount = maxElementCount; + } else { + Clay__defaultMaxElementCount = maxElementCount; // TODO: Fix this + Clay__defaultMaxMeasureTextWordCacheCount = maxElementCount * 2; + } +} + +CLAY_WASM_EXPORT("Clay_GetMaxMeasureTextCacheWordCount") +int32_t Clay_GetMaxMeasureTextCacheWordCount(void) { + Clay_Context* context = Clay_GetCurrentContext(); + return context->maxMeasureTextCacheWordCount; +} + +CLAY_WASM_EXPORT("Clay_SetMaxMeasureTextCacheWordCount") +void Clay_SetMaxMeasureTextCacheWordCount(int32_t maxMeasureTextCacheWordCount) { + Clay_Context* context = Clay_GetCurrentContext(); + if (context) { + Clay__currentContext->maxMeasureTextCacheWordCount = maxMeasureTextCacheWordCount; + } else { + Clay__defaultMaxMeasureTextWordCacheCount = maxMeasureTextCacheWordCount; // TODO: Fix this + } +} + +CLAY_WASM_EXPORT("Clay_ResetMeasureTextCache") +void Clay_ResetMeasureTextCache(void) { + Clay_Context* context = Clay_GetCurrentContext(); + context->measureTextHashMapInternal.length = 0; + context->measureTextHashMapInternalFreeList.length = 0; + context->measureTextHashMap.length = 0; + context->measuredWords.length = 0; + context->measuredWordsFreeList.length = 0; + + for (int32_t i = 0; i < context->measureTextHashMap.capacity; ++i) { + context->measureTextHashMap.internalArray[i] = 0; + } + context->measureTextHashMapInternal.length = 1; // Reserve the 0 value to mean "no next element" +} + +#endif // CLAY_IMPLEMENTATION + +/* +LICENSE +zlib/libpng license + +Copyright (c) 2024 Nic Barker + +This software is provided 'as-is', without any express or implied warranty. +In no event will the authors be held liable for any damages arising from the +use of this software. + +Permission is granted to anyone to use this software for any purpose, +including commercial applications, and to alter it and redistribute it +freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software in a + product, an acknowledgment in the product documentation would be + appreciated but is not required. + + 2. Altered source versions must be plainly marked as such, and must not + be misrepresented as being the original software. + + 3. This notice may not be removed or altered from any source + distribution. +*/ diff --git a/vendor/clay/clay_impl.c b/vendor/clay/clay_impl.c new file mode 100644 index 0000000..cbc311b --- /dev/null +++ b/vendor/clay/clay_impl.c @@ -0,0 +1,2 @@ +#define CLAY_IMPLEMENTATION +#include "clay.h" diff --git a/vendor/stb/stb_image.h b/vendor/stb/stb_image.h new file mode 100644 index 0000000..9eedabe --- /dev/null +++ b/vendor/stb/stb_image.h @@ -0,0 +1,7988 @@ +/* stb_image - v2.30 - public domain image loader - http://nothings.org/stb + no warranty implied; use at your own risk + + Do this: + #define STB_IMAGE_IMPLEMENTATION + before you include this file in *one* C or C++ file to create the implementation. + + // i.e. it should look like this: + #include ... + #include ... + #include ... + #define STB_IMAGE_IMPLEMENTATION + #include "stb_image.h" + + You can #define STBI_ASSERT(x) before the #include to avoid using assert.h. + And #define STBI_MALLOC, STBI_REALLOC, and STBI_FREE to avoid using malloc,realloc,free + + + QUICK NOTES: + Primarily of interest to game developers and other people who can + avoid problematic images and only need the trivial interface + + JPEG baseline & progressive (12 bpc/arithmetic not supported, same as stock IJG lib) + PNG 1/2/4/8/16-bit-per-channel + + TGA (not sure what subset, if a subset) + BMP non-1bpp, non-RLE + PSD (composited view only, no extra channels, 8/16 bit-per-channel) + + GIF (*comp always reports as 4-channel) + HDR (radiance rgbE format) + PIC (Softimage PIC) + PNM (PPM and PGM binary only) + + Animated GIF still needs a proper API, but here's one way to do it: + http://gist.github.com/urraka/685d9a6340b26b830d49 + + - decode from memory or through FILE (define STBI_NO_STDIO to remove code) + - decode from arbitrary I/O callbacks + - SIMD acceleration on x86/x64 (SSE2) and ARM (NEON) + + Full documentation under "DOCUMENTATION" below. + + +LICENSE + + See end of file for license information. + +RECENT REVISION HISTORY: + + 2.30 (2024-05-31) avoid erroneous gcc warning + 2.29 (2023-05-xx) optimizations + 2.28 (2023-01-29) many error fixes, security errors, just tons of stuff + 2.27 (2021-07-11) document stbi_info better, 16-bit PNM support, bug fixes + 2.26 (2020-07-13) many minor fixes + 2.25 (2020-02-02) fix warnings + 2.24 (2020-02-02) fix warnings; thread-local failure_reason and flip_vertically + 2.23 (2019-08-11) fix clang static analysis warning + 2.22 (2019-03-04) gif fixes, fix warnings + 2.21 (2019-02-25) fix typo in comment + 2.20 (2019-02-07) support utf8 filenames in Windows; fix warnings and platform ifdefs + 2.19 (2018-02-11) fix warning + 2.18 (2018-01-30) fix warnings + 2.17 (2018-01-29) bugfix, 1-bit BMP, 16-bitness query, fix warnings + 2.16 (2017-07-23) all functions have 16-bit variants; optimizations; bugfixes + 2.15 (2017-03-18) fix png-1,2,4; all Imagenet JPGs; no runtime SSE detection on GCC + 2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs + 2.13 (2016-12-04) experimental 16-bit API, only for PNG so far; fixes + 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes + 2.11 (2016-04-02) 16-bit PNGS; enable SSE2 in non-gcc x64 + RGB-format JPEG; remove white matting in PSD; + allocate large structures on the stack; + correct channel count for PNG & BMP + 2.10 (2016-01-22) avoid warning introduced in 2.09 + 2.09 (2016-01-16) 16-bit TGA; comments in PNM files; STBI_REALLOC_SIZED + + See end of file for full revision history. + + + ============================ Contributors ========================= + + Image formats Extensions, features + Sean Barrett (jpeg, png, bmp) Jetro Lauha (stbi_info) + Nicolas Schulz (hdr, psd) Martin "SpartanJ" Golini (stbi_info) + Jonathan Dummer (tga) James "moose2000" Brown (iPhone PNG) + Jean-Marc Lienher (gif) Ben "Disch" Wenger (io callbacks) + Tom Seddon (pic) Omar Cornut (1/2/4-bit PNG) + Thatcher Ulrich (psd) Nicolas Guillemot (vertical flip) + Ken Miller (pgm, ppm) Richard Mitton (16-bit PSD) + github:urraka (animated gif) Junggon Kim (PNM comments) + Christopher Forseth (animated gif) Daniel Gibson (16-bit TGA) + socks-the-fox (16-bit PNG) + Jeremy Sawicki (handle all ImageNet JPGs) + Optimizations & bugfixes Mikhail Morozov (1-bit BMP) + Fabian "ryg" Giesen Anael Seghezzi (is-16-bit query) + Arseny Kapoulkine Simon Breuss (16-bit PNM) + John-Mark Allen + Carmelo J Fdez-Aguera + + Bug & warning fixes + Marc LeBlanc David Woo Guillaume George Martins Mozeiko + Christpher Lloyd Jerry Jansson Joseph Thomson Blazej Dariusz Roszkowski + Phil Jordan Dave Moore Roy Eltham + Hayaki Saito Nathan Reed Won Chun + Luke Graham Johan Duparc Nick Verigakis the Horde3D community + Thomas Ruf Ronny Chevalier github:rlyeh + Janez Zemva John Bartholomew Michal Cichon github:romigrou + Jonathan Blow Ken Hamada Tero Hanninen github:svdijk + Eugene Golushkov Laurent Gomila Cort Stratton github:snagar + Aruelien Pocheville Sergio Gonzalez Thibault Reuille github:Zelex + Cass Everitt Ryamond Barbiero github:grim210 + Paul Du Bois Engin Manap Aldo Culquicondor github:sammyhw + Philipp Wiesemann Dale Weiler Oriol Ferrer Mesia github:phprus + Josh Tobin Neil Bickford Matthew Gregan github:poppolopoppo + Julian Raschke Gregory Mullen Christian Floisand github:darealshinji + Baldur Karlsson Kevin Schmidt JR Smith github:Michaelangel007 + Brad Weinberger Matvey Cherevko github:mosra + Luca Sas Alexander Veselov Zack Middleton [reserved] + Ryan C. Gordon [reserved] [reserved] + DO NOT ADD YOUR NAME HERE + + Jacko Dirks + + To add your name to the credits, pick a random blank space in the middle and fill it. + 80% of merge conflicts on stb PRs are due to people adding their name at the end + of the credits. +*/ + +#ifndef STBI_INCLUDE_STB_IMAGE_H +#define STBI_INCLUDE_STB_IMAGE_H + +// DOCUMENTATION +// +// Limitations: +// - no 12-bit-per-channel JPEG +// - no JPEGs with arithmetic coding +// - GIF always returns *comp=4 +// +// Basic usage (see HDR discussion below for HDR usage): +// int x,y,n; +// unsigned char *data = stbi_load(filename, &x, &y, &n, 0); +// // ... process data if not NULL ... +// // ... x = width, y = height, n = # 8-bit components per pixel ... +// // ... replace '0' with '1'..'4' to force that many components per pixel +// // ... but 'n' will always be the number that it would have been if you said 0 +// stbi_image_free(data); +// +// Standard parameters: +// int *x -- outputs image width in pixels +// int *y -- outputs image height in pixels +// int *channels_in_file -- outputs # of image components in image file +// int desired_channels -- if non-zero, # of image components requested in result +// +// The return value from an image loader is an 'unsigned char *' which points +// to the pixel data, or NULL on an allocation failure or if the image is +// corrupt or invalid. The pixel data consists of *y scanlines of *x pixels, +// with each pixel consisting of N interleaved 8-bit components; the first +// pixel pointed to is top-left-most in the image. There is no padding between +// image scanlines or between pixels, regardless of format. The number of +// components N is 'desired_channels' if desired_channels is non-zero, or +// *channels_in_file otherwise. If desired_channels is non-zero, +// *channels_in_file has the number of components that _would_ have been +// output otherwise. E.g. if you set desired_channels to 4, you will always +// get RGBA output, but you can check *channels_in_file to see if it's trivially +// opaque because e.g. there were only 3 channels in the source image. +// +// An output image with N components has the following components interleaved +// in this order in each pixel: +// +// N=#comp components +// 1 grey +// 2 grey, alpha +// 3 red, green, blue +// 4 red, green, blue, alpha +// +// If image loading fails for any reason, the return value will be NULL, +// and *x, *y, *channels_in_file will be unchanged. The function +// stbi_failure_reason() can be queried for an extremely brief, end-user +// unfriendly explanation of why the load failed. Define STBI_NO_FAILURE_STRINGS +// to avoid compiling these strings at all, and STBI_FAILURE_USERMSG to get slightly +// more user-friendly ones. +// +// Paletted PNG, BMP, GIF, and PIC images are automatically depalettized. +// +// To query the width, height and component count of an image without having to +// decode the full file, you can use the stbi_info family of functions: +// +// int x,y,n,ok; +// ok = stbi_info(filename, &x, &y, &n); +// // returns ok=1 and sets x, y, n if image is a supported format, +// // 0 otherwise. +// +// Note that stb_image pervasively uses ints in its public API for sizes, +// including sizes of memory buffers. This is now part of the API and thus +// hard to change without causing breakage. As a result, the various image +// loaders all have certain limits on image size; these differ somewhat +// by format but generally boil down to either just under 2GB or just under +// 1GB. When the decoded image would be larger than this, stb_image decoding +// will fail. +// +// Additionally, stb_image will reject image files that have any of their +// dimensions set to a larger value than the configurable STBI_MAX_DIMENSIONS, +// which defaults to 2**24 = 16777216 pixels. Due to the above memory limit, +// the only way to have an image with such dimensions load correctly +// is for it to have a rather extreme aspect ratio. Either way, the +// assumption here is that such larger images are likely to be malformed +// or malicious. If you do need to load an image with individual dimensions +// larger than that, and it still fits in the overall size limit, you can +// #define STBI_MAX_DIMENSIONS on your own to be something larger. +// +// =========================================================================== +// +// UNICODE: +// +// If compiling for Windows and you wish to use Unicode filenames, compile +// with +// #define STBI_WINDOWS_UTF8 +// and pass utf8-encoded filenames. Call stbi_convert_wchar_to_utf8 to convert +// Windows wchar_t filenames to utf8. +// +// =========================================================================== +// +// Philosophy +// +// stb libraries are designed with the following priorities: +// +// 1. easy to use +// 2. easy to maintain +// 3. good performance +// +// Sometimes I let "good performance" creep up in priority over "easy to maintain", +// and for best performance I may provide less-easy-to-use APIs that give higher +// performance, in addition to the easy-to-use ones. Nevertheless, it's important +// to keep in mind that from the standpoint of you, a client of this library, +// all you care about is #1 and #3, and stb libraries DO NOT emphasize #3 above all. +// +// Some secondary priorities arise directly from the first two, some of which +// provide more explicit reasons why performance can't be emphasized. +// +// - Portable ("ease of use") +// - Small source code footprint ("easy to maintain") +// - No dependencies ("ease of use") +// +// =========================================================================== +// +// I/O callbacks +// +// I/O callbacks allow you to read from arbitrary sources, like packaged +// files or some other source. Data read from callbacks are processed +// through a small internal buffer (currently 128 bytes) to try to reduce +// overhead. +// +// The three functions you must define are "read" (reads some bytes of data), +// "skip" (skips some bytes of data), "eof" (reports if the stream is at the end). +// +// =========================================================================== +// +// SIMD support +// +// The JPEG decoder will try to automatically use SIMD kernels on x86 when +// supported by the compiler. For ARM Neon support, you must explicitly +// request it. +// +// (The old do-it-yourself SIMD API is no longer supported in the current +// code.) +// +// On x86, SSE2 will automatically be used when available based on a run-time +// test; if not, the generic C versions are used as a fall-back. On ARM targets, +// the typical path is to have separate builds for NEON and non-NEON devices +// (at least this is true for iOS and Android). Therefore, the NEON support is +// toggled by a build flag: define STBI_NEON to get NEON loops. +// +// If for some reason you do not want to use any of SIMD code, or if +// you have issues compiling it, you can disable it entirely by +// defining STBI_NO_SIMD. +// +// =========================================================================== +// +// HDR image support (disable by defining STBI_NO_HDR) +// +// stb_image supports loading HDR images in general, and currently the Radiance +// .HDR file format specifically. You can still load any file through the existing +// interface; if you attempt to load an HDR file, it will be automatically remapped +// to LDR, assuming gamma 2.2 and an arbitrary scale factor defaulting to 1; +// both of these constants can be reconfigured through this interface: +// +// stbi_hdr_to_ldr_gamma(2.2f); +// stbi_hdr_to_ldr_scale(1.0f); +// +// (note, do not use _inverse_ constants; stbi_image will invert them +// appropriately). +// +// Additionally, there is a new, parallel interface for loading files as +// (linear) floats to preserve the full dynamic range: +// +// float *data = stbi_loadf(filename, &x, &y, &n, 0); +// +// If you load LDR images through this interface, those images will +// be promoted to floating point values, run through the inverse of +// constants corresponding to the above: +// +// stbi_ldr_to_hdr_scale(1.0f); +// stbi_ldr_to_hdr_gamma(2.2f); +// +// Finally, given a filename (or an open file or memory block--see header +// file for details) containing image data, you can query for the "most +// appropriate" interface to use (that is, whether the image is HDR or +// not), using: +// +// stbi_is_hdr(char *filename); +// +// =========================================================================== +// +// iPhone PNG support: +// +// We optionally support converting iPhone-formatted PNGs (which store +// premultiplied BGRA) back to RGB, even though they're internally encoded +// differently. To enable this conversion, call +// stbi_convert_iphone_png_to_rgb(1). +// +// Call stbi_set_unpremultiply_on_load(1) as well to force a divide per +// pixel to remove any premultiplied alpha *only* if the image file explicitly +// says there's premultiplied data (currently only happens in iPhone images, +// and only if iPhone convert-to-rgb processing is on). +// +// =========================================================================== +// +// ADDITIONAL CONFIGURATION +// +// - You can suppress implementation of any of the decoders to reduce +// your code footprint by #defining one or more of the following +// symbols before creating the implementation. +// +// STBI_NO_JPEG +// STBI_NO_PNG +// STBI_NO_BMP +// STBI_NO_PSD +// STBI_NO_TGA +// STBI_NO_GIF +// STBI_NO_HDR +// STBI_NO_PIC +// STBI_NO_PNM (.ppm and .pgm) +// +// - You can request *only* certain decoders and suppress all other ones +// (this will be more forward-compatible, as addition of new decoders +// doesn't require you to disable them explicitly): +// +// STBI_ONLY_JPEG +// STBI_ONLY_PNG +// STBI_ONLY_BMP +// STBI_ONLY_PSD +// STBI_ONLY_TGA +// STBI_ONLY_GIF +// STBI_ONLY_HDR +// STBI_ONLY_PIC +// STBI_ONLY_PNM (.ppm and .pgm) +// +// - If you use STBI_NO_PNG (or _ONLY_ without PNG), and you still +// want the zlib decoder to be available, #define STBI_SUPPORT_ZLIB +// +// - If you define STBI_MAX_DIMENSIONS, stb_image will reject images greater +// than that size (in either width or height) without further processing. +// This is to let programs in the wild set an upper bound to prevent +// denial-of-service attacks on untrusted data, as one could generate a +// valid image of gigantic dimensions and force stb_image to allocate a +// huge block of memory and spend disproportionate time decoding it. By +// default this is set to (1 << 24), which is 16777216, but that's still +// very big. + +#ifndef STBI_NO_STDIO +#include +#endif // STBI_NO_STDIO + +#define STBI_VERSION 1 + +enum +{ + STBI_default = 0, // only used for desired_channels + + STBI_grey = 1, + STBI_grey_alpha = 2, + STBI_rgb = 3, + STBI_rgb_alpha = 4 +}; + +#include +typedef unsigned char stbi_uc; +typedef unsigned short stbi_us; + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef STBIDEF +#ifdef STB_IMAGE_STATIC +#define STBIDEF static +#else +#define STBIDEF extern +#endif +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// PRIMARY API - works on images of any type +// + +// +// load image by filename, open file, or memory buffer +// + +typedef struct +{ + int (*read) (void *user,char *data,int size); // fill 'data' with 'size' bytes. return number of bytes actually read + void (*skip) (void *user,int n); // skip the next 'n' bytes, or 'unget' the last -n bytes if negative + int (*eof) (void *user); // returns nonzero if we are at end of file/data +} stbi_io_callbacks; + +//////////////////////////////////// +// +// 8-bits-per-channel interface +// + +STBIDEF stbi_uc *stbi_load_from_memory (stbi_uc const *buffer, int len , int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk , void *user, int *x, int *y, int *channels_in_file, int desired_channels); + +#ifndef STBI_NO_STDIO +STBIDEF stbi_uc *stbi_load (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_uc *stbi_load_from_file (FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); +// for stbi_load_from_file, file pointer is left pointing immediately after image +#endif + +#ifndef STBI_NO_GIF +STBIDEF stbi_uc *stbi_load_gif_from_memory(stbi_uc const *buffer, int len, int **delays, int *x, int *y, int *z, int *comp, int req_comp); +#endif + +#ifdef STBI_WINDOWS_UTF8 +STBIDEF int stbi_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input); +#endif + +//////////////////////////////////// +// +// 16-bits-per-channel interface +// + +STBIDEF stbi_us *stbi_load_16_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_us *stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels); + +#ifndef STBI_NO_STDIO +STBIDEF stbi_us *stbi_load_16 (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_us *stbi_load_from_file_16(FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); +#endif + +//////////////////////////////////// +// +// float-per-channel interface +// +#ifndef STBI_NO_LINEAR + STBIDEF float *stbi_loadf_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); + STBIDEF float *stbi_loadf_from_callbacks (stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels); + + #ifndef STBI_NO_STDIO + STBIDEF float *stbi_loadf (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); + STBIDEF float *stbi_loadf_from_file (FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); + #endif +#endif + +#ifndef STBI_NO_HDR + STBIDEF void stbi_hdr_to_ldr_gamma(float gamma); + STBIDEF void stbi_hdr_to_ldr_scale(float scale); +#endif // STBI_NO_HDR + +#ifndef STBI_NO_LINEAR + STBIDEF void stbi_ldr_to_hdr_gamma(float gamma); + STBIDEF void stbi_ldr_to_hdr_scale(float scale); +#endif // STBI_NO_LINEAR + +// stbi_is_hdr is always defined, but always returns false if STBI_NO_HDR +STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user); +STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len); +#ifndef STBI_NO_STDIO +STBIDEF int stbi_is_hdr (char const *filename); +STBIDEF int stbi_is_hdr_from_file(FILE *f); +#endif // STBI_NO_STDIO + + +// get a VERY brief reason for failure +// on most compilers (and ALL modern mainstream compilers) this is threadsafe +STBIDEF const char *stbi_failure_reason (void); + +// free the loaded image -- this is just free() +STBIDEF void stbi_image_free (void *retval_from_stbi_load); + +// get image dimensions & components without fully decoding +STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp); +STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp); +STBIDEF int stbi_is_16_bit_from_memory(stbi_uc const *buffer, int len); +STBIDEF int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const *clbk, void *user); + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_info (char const *filename, int *x, int *y, int *comp); +STBIDEF int stbi_info_from_file (FILE *f, int *x, int *y, int *comp); +STBIDEF int stbi_is_16_bit (char const *filename); +STBIDEF int stbi_is_16_bit_from_file(FILE *f); +#endif + + + +// for image formats that explicitly notate that they have premultiplied alpha, +// we just return the colors as stored in the file. set this flag to force +// unpremultiplication. results are undefined if the unpremultiply overflow. +STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply); + +// indicate whether we should process iphone images back to canonical format, +// or just pass them through "as-is" +STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert); + +// flip the image vertically, so the first pixel in the output array is the bottom left +STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip); + +// as above, but only applies to images loaded on the thread that calls the function +// this function is only available if your compiler supports thread-local variables; +// calling it will fail to link if your compiler doesn't +STBIDEF void stbi_set_unpremultiply_on_load_thread(int flag_true_if_should_unpremultiply); +STBIDEF void stbi_convert_iphone_png_to_rgb_thread(int flag_true_if_should_convert); +STBIDEF void stbi_set_flip_vertically_on_load_thread(int flag_true_if_should_flip); + +// ZLIB client - used by PNG, available for other purposes + +STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen); +STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header); +STBIDEF char *stbi_zlib_decode_malloc(const char *buffer, int len, int *outlen); +STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + +STBIDEF char *stbi_zlib_decode_noheader_malloc(const char *buffer, int len, int *outlen); +STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + + +#ifdef __cplusplus +} +#endif + +// +// +//// end header file ///////////////////////////////////////////////////// +#endif // STBI_INCLUDE_STB_IMAGE_H + +#ifdef STB_IMAGE_IMPLEMENTATION + +#if defined(STBI_ONLY_JPEG) || defined(STBI_ONLY_PNG) || defined(STBI_ONLY_BMP) \ + || defined(STBI_ONLY_TGA) || defined(STBI_ONLY_GIF) || defined(STBI_ONLY_PSD) \ + || defined(STBI_ONLY_HDR) || defined(STBI_ONLY_PIC) || defined(STBI_ONLY_PNM) \ + || defined(STBI_ONLY_ZLIB) + #ifndef STBI_ONLY_JPEG + #define STBI_NO_JPEG + #endif + #ifndef STBI_ONLY_PNG + #define STBI_NO_PNG + #endif + #ifndef STBI_ONLY_BMP + #define STBI_NO_BMP + #endif + #ifndef STBI_ONLY_PSD + #define STBI_NO_PSD + #endif + #ifndef STBI_ONLY_TGA + #define STBI_NO_TGA + #endif + #ifndef STBI_ONLY_GIF + #define STBI_NO_GIF + #endif + #ifndef STBI_ONLY_HDR + #define STBI_NO_HDR + #endif + #ifndef STBI_ONLY_PIC + #define STBI_NO_PIC + #endif + #ifndef STBI_ONLY_PNM + #define STBI_NO_PNM + #endif +#endif + +#if defined(STBI_NO_PNG) && !defined(STBI_SUPPORT_ZLIB) && !defined(STBI_NO_ZLIB) +#define STBI_NO_ZLIB +#endif + + +#include +#include // ptrdiff_t on osx +#include +#include +#include + +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) +#include // ldexp, pow +#endif + +#ifndef STBI_NO_STDIO +#include +#endif + +#ifndef STBI_ASSERT +#include +#define STBI_ASSERT(x) assert(x) +#endif + +#ifdef __cplusplus +#define STBI_EXTERN extern "C" +#else +#define STBI_EXTERN extern +#endif + + +#ifndef _MSC_VER + #ifdef __cplusplus + #define stbi_inline inline + #else + #define stbi_inline + #endif +#else + #define stbi_inline __forceinline +#endif + +#ifndef STBI_NO_THREAD_LOCALS + #if defined(__cplusplus) && __cplusplus >= 201103L + #define STBI_THREAD_LOCAL thread_local + #elif defined(__GNUC__) && __GNUC__ < 5 + #define STBI_THREAD_LOCAL __thread + #elif defined(_MSC_VER) + #define STBI_THREAD_LOCAL __declspec(thread) + #elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L && !defined(__STDC_NO_THREADS__) + #define STBI_THREAD_LOCAL _Thread_local + #endif + + #ifndef STBI_THREAD_LOCAL + #if defined(__GNUC__) + #define STBI_THREAD_LOCAL __thread + #endif + #endif +#endif + +#if defined(_MSC_VER) || defined(__SYMBIAN32__) +typedef unsigned short stbi__uint16; +typedef signed short stbi__int16; +typedef unsigned int stbi__uint32; +typedef signed int stbi__int32; +#else +#include +typedef uint16_t stbi__uint16; +typedef int16_t stbi__int16; +typedef uint32_t stbi__uint32; +typedef int32_t stbi__int32; +#endif + +// should produce compiler error if size is wrong +typedef unsigned char validate_uint32[sizeof(stbi__uint32)==4 ? 1 : -1]; + +#ifdef _MSC_VER +#define STBI_NOTUSED(v) (void)(v) +#else +#define STBI_NOTUSED(v) (void)sizeof(v) +#endif + +#ifdef _MSC_VER +#define STBI_HAS_LROTL +#endif + +#ifdef STBI_HAS_LROTL + #define stbi_lrot(x,y) _lrotl(x,y) +#else + #define stbi_lrot(x,y) (((x) << (y)) | ((x) >> (-(y) & 31))) +#endif + +#if defined(STBI_MALLOC) && defined(STBI_FREE) && (defined(STBI_REALLOC) || defined(STBI_REALLOC_SIZED)) +// ok +#elif !defined(STBI_MALLOC) && !defined(STBI_FREE) && !defined(STBI_REALLOC) && !defined(STBI_REALLOC_SIZED) +// ok +#else +#error "Must define all or none of STBI_MALLOC, STBI_FREE, and STBI_REALLOC (or STBI_REALLOC_SIZED)." +#endif + +#ifndef STBI_MALLOC +#define STBI_MALLOC(sz) malloc(sz) +#define STBI_REALLOC(p,newsz) realloc(p,newsz) +#define STBI_FREE(p) free(p) +#endif + +#ifndef STBI_REALLOC_SIZED +#define STBI_REALLOC_SIZED(p,oldsz,newsz) STBI_REALLOC(p,newsz) +#endif + +// x86/x64 detection +#if defined(__x86_64__) || defined(_M_X64) +#define STBI__X64_TARGET +#elif defined(__i386) || defined(_M_IX86) +#define STBI__X86_TARGET +#endif + +#if defined(__GNUC__) && defined(STBI__X86_TARGET) && !defined(__SSE2__) && !defined(STBI_NO_SIMD) +// gcc doesn't support sse2 intrinsics unless you compile with -msse2, +// which in turn means it gets to use SSE2 everywhere. This is unfortunate, +// but previous attempts to provide the SSE2 functions with runtime +// detection caused numerous issues. The way architecture extensions are +// exposed in GCC/Clang is, sadly, not really suited for one-file libs. +// New behavior: if compiled with -msse2, we use SSE2 without any +// detection; if not, we don't use it at all. +#define STBI_NO_SIMD +#endif + +#if defined(__MINGW32__) && defined(STBI__X86_TARGET) && !defined(STBI_MINGW_ENABLE_SSE2) && !defined(STBI_NO_SIMD) +// Note that __MINGW32__ doesn't actually mean 32-bit, so we have to avoid STBI__X64_TARGET +// +// 32-bit MinGW wants ESP to be 16-byte aligned, but this is not in the +// Windows ABI and VC++ as well as Windows DLLs don't maintain that invariant. +// As a result, enabling SSE2 on 32-bit MinGW is dangerous when not +// simultaneously enabling "-mstackrealign". +// +// See https://github.com/nothings/stb/issues/81 for more information. +// +// So default to no SSE2 on 32-bit MinGW. If you've read this far and added +// -mstackrealign to your build settings, feel free to #define STBI_MINGW_ENABLE_SSE2. +#define STBI_NO_SIMD +#endif + +#if !defined(STBI_NO_SIMD) && (defined(STBI__X86_TARGET) || defined(STBI__X64_TARGET)) +#define STBI_SSE2 +#include + +#ifdef _MSC_VER + +#if _MSC_VER >= 1400 // not VC6 +#include // __cpuid +static int stbi__cpuid3(void) +{ + int info[4]; + __cpuid(info,1); + return info[3]; +} +#else +static int stbi__cpuid3(void) +{ + int res; + __asm { + mov eax,1 + cpuid + mov res,edx + } + return res; +} +#endif + +#define STBI_SIMD_ALIGN(type, name) __declspec(align(16)) type name + +#if !defined(STBI_NO_JPEG) && defined(STBI_SSE2) +static int stbi__sse2_available(void) +{ + int info3 = stbi__cpuid3(); + return ((info3 >> 26) & 1) != 0; +} +#endif + +#else // assume GCC-style if not VC++ +#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) + +#if !defined(STBI_NO_JPEG) && defined(STBI_SSE2) +static int stbi__sse2_available(void) +{ + // If we're even attempting to compile this on GCC/Clang, that means + // -msse2 is on, which means the compiler is allowed to use SSE2 + // instructions at will, and so are we. + return 1; +} +#endif + +#endif +#endif + +// ARM NEON +#if defined(STBI_NO_SIMD) && defined(STBI_NEON) +#undef STBI_NEON +#endif + +#ifdef STBI_NEON +#include +#ifdef _MSC_VER +#define STBI_SIMD_ALIGN(type, name) __declspec(align(16)) type name +#else +#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) +#endif +#endif + +#ifndef STBI_SIMD_ALIGN +#define STBI_SIMD_ALIGN(type, name) type name +#endif + +#ifndef STBI_MAX_DIMENSIONS +#define STBI_MAX_DIMENSIONS (1 << 24) +#endif + +/////////////////////////////////////////////// +// +// stbi__context struct and start_xxx functions + +// stbi__context structure is our basic context used by all images, so it +// contains all the IO context, plus some basic image information +typedef struct +{ + stbi__uint32 img_x, img_y; + int img_n, img_out_n; + + stbi_io_callbacks io; + void *io_user_data; + + int read_from_callbacks; + int buflen; + stbi_uc buffer_start[128]; + int callback_already_read; + + stbi_uc *img_buffer, *img_buffer_end; + stbi_uc *img_buffer_original, *img_buffer_original_end; +} stbi__context; + + +static void stbi__refill_buffer(stbi__context *s); + +// initialize a memory-decode context +static void stbi__start_mem(stbi__context *s, stbi_uc const *buffer, int len) +{ + s->io.read = NULL; + s->read_from_callbacks = 0; + s->callback_already_read = 0; + s->img_buffer = s->img_buffer_original = (stbi_uc *) buffer; + s->img_buffer_end = s->img_buffer_original_end = (stbi_uc *) buffer+len; +} + +// initialize a callback-based context +static void stbi__start_callbacks(stbi__context *s, stbi_io_callbacks *c, void *user) +{ + s->io = *c; + s->io_user_data = user; + s->buflen = sizeof(s->buffer_start); + s->read_from_callbacks = 1; + s->callback_already_read = 0; + s->img_buffer = s->img_buffer_original = s->buffer_start; + stbi__refill_buffer(s); + s->img_buffer_original_end = s->img_buffer_end; +} + +#ifndef STBI_NO_STDIO + +static int stbi__stdio_read(void *user, char *data, int size) +{ + return (int) fread(data,1,size,(FILE*) user); +} + +static void stbi__stdio_skip(void *user, int n) +{ + int ch; + fseek((FILE*) user, n, SEEK_CUR); + ch = fgetc((FILE*) user); /* have to read a byte to reset feof()'s flag */ + if (ch != EOF) { + ungetc(ch, (FILE *) user); /* push byte back onto stream if valid. */ + } +} + +static int stbi__stdio_eof(void *user) +{ + return feof((FILE*) user) || ferror((FILE *) user); +} + +static stbi_io_callbacks stbi__stdio_callbacks = +{ + stbi__stdio_read, + stbi__stdio_skip, + stbi__stdio_eof, +}; + +static void stbi__start_file(stbi__context *s, FILE *f) +{ + stbi__start_callbacks(s, &stbi__stdio_callbacks, (void *) f); +} + +//static void stop_file(stbi__context *s) { } + +#endif // !STBI_NO_STDIO + +static void stbi__rewind(stbi__context *s) +{ + // conceptually rewind SHOULD rewind to the beginning of the stream, + // but we just rewind to the beginning of the initial buffer, because + // we only use it after doing 'test', which only ever looks at at most 92 bytes + s->img_buffer = s->img_buffer_original; + s->img_buffer_end = s->img_buffer_original_end; +} + +enum +{ + STBI_ORDER_RGB, + STBI_ORDER_BGR +}; + +typedef struct +{ + int bits_per_channel; + int num_channels; + int channel_order; +} stbi__result_info; + +#ifndef STBI_NO_JPEG +static int stbi__jpeg_test(stbi__context *s); +static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PNG +static int stbi__png_test(stbi__context *s); +static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__png_is16(stbi__context *s); +#endif + +#ifndef STBI_NO_BMP +static int stbi__bmp_test(stbi__context *s); +static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_TGA +static int stbi__tga_test(stbi__context *s); +static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PSD +static int stbi__psd_test(stbi__context *s); +static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc); +static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__psd_is16(stbi__context *s); +#endif + +#ifndef STBI_NO_HDR +static int stbi__hdr_test(stbi__context *s); +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PIC +static int stbi__pic_test(stbi__context *s); +static void *stbi__pic_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_GIF +static int stbi__gif_test(stbi__context *s); +static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y, int *z, int *comp, int req_comp); +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PNM +static int stbi__pnm_test(stbi__context *s); +static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__pnm_is16(stbi__context *s); +#endif + +static +#ifdef STBI_THREAD_LOCAL +STBI_THREAD_LOCAL +#endif +const char *stbi__g_failure_reason; + +STBIDEF const char *stbi_failure_reason(void) +{ + return stbi__g_failure_reason; +} + +#ifndef STBI_NO_FAILURE_STRINGS +static int stbi__err(const char *str) +{ + stbi__g_failure_reason = str; + return 0; +} +#endif + +static void *stbi__malloc(size_t size) +{ + return STBI_MALLOC(size); +} + +// stb_image uses ints pervasively, including for offset calculations. +// therefore the largest decoded image size we can support with the +// current code, even on 64-bit targets, is INT_MAX. this is not a +// significant limitation for the intended use case. +// +// we do, however, need to make sure our size calculations don't +// overflow. hence a few helper functions for size calculations that +// multiply integers together, making sure that they're non-negative +// and no overflow occurs. + +// return 1 if the sum is valid, 0 on overflow. +// negative terms are considered invalid. +static int stbi__addsizes_valid(int a, int b) +{ + if (b < 0) return 0; + // now 0 <= b <= INT_MAX, hence also + // 0 <= INT_MAX - b <= INTMAX. + // And "a + b <= INT_MAX" (which might overflow) is the + // same as a <= INT_MAX - b (no overflow) + return a <= INT_MAX - b; +} + +// returns 1 if the product is valid, 0 on overflow. +// negative factors are considered invalid. +static int stbi__mul2sizes_valid(int a, int b) +{ + if (a < 0 || b < 0) return 0; + if (b == 0) return 1; // mul-by-0 is always safe + // portable way to check for no overflows in a*b + return a <= INT_MAX/b; +} + +#if !defined(STBI_NO_JPEG) || !defined(STBI_NO_PNG) || !defined(STBI_NO_TGA) || !defined(STBI_NO_HDR) +// returns 1 if "a*b + add" has no negative terms/factors and doesn't overflow +static int stbi__mad2sizes_valid(int a, int b, int add) +{ + return stbi__mul2sizes_valid(a, b) && stbi__addsizes_valid(a*b, add); +} +#endif + +// returns 1 if "a*b*c + add" has no negative terms/factors and doesn't overflow +static int stbi__mad3sizes_valid(int a, int b, int c, int add) +{ + return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) && + stbi__addsizes_valid(a*b*c, add); +} + +// returns 1 if "a*b*c*d + add" has no negative terms/factors and doesn't overflow +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) || !defined(STBI_NO_PNM) +static int stbi__mad4sizes_valid(int a, int b, int c, int d, int add) +{ + return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) && + stbi__mul2sizes_valid(a*b*c, d) && stbi__addsizes_valid(a*b*c*d, add); +} +#endif + +#if !defined(STBI_NO_JPEG) || !defined(STBI_NO_PNG) || !defined(STBI_NO_TGA) || !defined(STBI_NO_HDR) +// mallocs with size overflow checking +static void *stbi__malloc_mad2(int a, int b, int add) +{ + if (!stbi__mad2sizes_valid(a, b, add)) return NULL; + return stbi__malloc(a*b + add); +} +#endif + +static void *stbi__malloc_mad3(int a, int b, int c, int add) +{ + if (!stbi__mad3sizes_valid(a, b, c, add)) return NULL; + return stbi__malloc(a*b*c + add); +} + +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) || !defined(STBI_NO_PNM) +static void *stbi__malloc_mad4(int a, int b, int c, int d, int add) +{ + if (!stbi__mad4sizes_valid(a, b, c, d, add)) return NULL; + return stbi__malloc(a*b*c*d + add); +} +#endif + +// returns 1 if the sum of two signed ints is valid (between -2^31 and 2^31-1 inclusive), 0 on overflow. +static int stbi__addints_valid(int a, int b) +{ + if ((a >= 0) != (b >= 0)) return 1; // a and b have different signs, so no overflow + if (a < 0 && b < 0) return a >= INT_MIN - b; // same as a + b >= INT_MIN; INT_MIN - b cannot overflow since b < 0. + return a <= INT_MAX - b; +} + +// returns 1 if the product of two ints fits in a signed short, 0 on overflow. +static int stbi__mul2shorts_valid(int a, int b) +{ + if (b == 0 || b == -1) return 1; // multiplication by 0 is always 0; check for -1 so SHRT_MIN/b doesn't overflow + if ((a >= 0) == (b >= 0)) return a <= SHRT_MAX/b; // product is positive, so similar to mul2sizes_valid + if (b < 0) return a <= SHRT_MIN / b; // same as a * b >= SHRT_MIN + return a >= SHRT_MIN / b; +} + +// stbi__err - error +// stbi__errpf - error returning pointer to float +// stbi__errpuc - error returning pointer to unsigned char + +#ifdef STBI_NO_FAILURE_STRINGS + #define stbi__err(x,y) 0 +#elif defined(STBI_FAILURE_USERMSG) + #define stbi__err(x,y) stbi__err(y) +#else + #define stbi__err(x,y) stbi__err(x) +#endif + +#define stbi__errpf(x,y) ((float *)(size_t) (stbi__err(x,y)?NULL:NULL)) +#define stbi__errpuc(x,y) ((unsigned char *)(size_t) (stbi__err(x,y)?NULL:NULL)) + +STBIDEF void stbi_image_free(void *retval_from_stbi_load) +{ + STBI_FREE(retval_from_stbi_load); +} + +#ifndef STBI_NO_LINEAR +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp); +#endif + +#ifndef STBI_NO_HDR +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp); +#endif + +static int stbi__vertically_flip_on_load_global = 0; + +STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip) +{ + stbi__vertically_flip_on_load_global = flag_true_if_should_flip; +} + +#ifndef STBI_THREAD_LOCAL +#define stbi__vertically_flip_on_load stbi__vertically_flip_on_load_global +#else +static STBI_THREAD_LOCAL int stbi__vertically_flip_on_load_local, stbi__vertically_flip_on_load_set; + +STBIDEF void stbi_set_flip_vertically_on_load_thread(int flag_true_if_should_flip) +{ + stbi__vertically_flip_on_load_local = flag_true_if_should_flip; + stbi__vertically_flip_on_load_set = 1; +} + +#define stbi__vertically_flip_on_load (stbi__vertically_flip_on_load_set \ + ? stbi__vertically_flip_on_load_local \ + : stbi__vertically_flip_on_load_global) +#endif // STBI_THREAD_LOCAL + +static void *stbi__load_main(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) +{ + memset(ri, 0, sizeof(*ri)); // make sure it's initialized if we add new fields + ri->bits_per_channel = 8; // default is 8 so most paths don't have to be changed + ri->channel_order = STBI_ORDER_RGB; // all current input & output are this, but this is here so we can add BGR order + ri->num_channels = 0; + + // test the formats with a very explicit header first (at least a FOURCC + // or distinctive magic number first) + #ifndef STBI_NO_PNG + if (stbi__png_test(s)) return stbi__png_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_BMP + if (stbi__bmp_test(s)) return stbi__bmp_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_GIF + if (stbi__gif_test(s)) return stbi__gif_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_PSD + if (stbi__psd_test(s)) return stbi__psd_load(s,x,y,comp,req_comp, ri, bpc); + #else + STBI_NOTUSED(bpc); + #endif + #ifndef STBI_NO_PIC + if (stbi__pic_test(s)) return stbi__pic_load(s,x,y,comp,req_comp, ri); + #endif + + // then the formats that can end up attempting to load with just 1 or 2 + // bytes matching expectations; these are prone to false positives, so + // try them later + #ifndef STBI_NO_JPEG + if (stbi__jpeg_test(s)) return stbi__jpeg_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_PNM + if (stbi__pnm_test(s)) return stbi__pnm_load(s,x,y,comp,req_comp, ri); + #endif + + #ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) { + float *hdr = stbi__hdr_load(s, x,y,comp,req_comp, ri); + return stbi__hdr_to_ldr(hdr, *x, *y, req_comp ? req_comp : *comp); + } + #endif + + #ifndef STBI_NO_TGA + // test tga last because it's a crappy test! + if (stbi__tga_test(s)) + return stbi__tga_load(s,x,y,comp,req_comp, ri); + #endif + + return stbi__errpuc("unknown image type", "Image not of any known type, or corrupt"); +} + +static stbi_uc *stbi__convert_16_to_8(stbi__uint16 *orig, int w, int h, int channels) +{ + int i; + int img_len = w * h * channels; + stbi_uc *reduced; + + reduced = (stbi_uc *) stbi__malloc(img_len); + if (reduced == NULL) return stbi__errpuc("outofmem", "Out of memory"); + + for (i = 0; i < img_len; ++i) + reduced[i] = (stbi_uc)((orig[i] >> 8) & 0xFF); // top half of each byte is sufficient approx of 16->8 bit scaling + + STBI_FREE(orig); + return reduced; +} + +static stbi__uint16 *stbi__convert_8_to_16(stbi_uc *orig, int w, int h, int channels) +{ + int i; + int img_len = w * h * channels; + stbi__uint16 *enlarged; + + enlarged = (stbi__uint16 *) stbi__malloc(img_len*2); + if (enlarged == NULL) return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); + + for (i = 0; i < img_len; ++i) + enlarged[i] = (stbi__uint16)((orig[i] << 8) + orig[i]); // replicate to high and low byte, maps 0->0, 255->0xffff + + STBI_FREE(orig); + return enlarged; +} + +static void stbi__vertical_flip(void *image, int w, int h, int bytes_per_pixel) +{ + int row; + size_t bytes_per_row = (size_t)w * bytes_per_pixel; + stbi_uc temp[2048]; + stbi_uc *bytes = (stbi_uc *)image; + + for (row = 0; row < (h>>1); row++) { + stbi_uc *row0 = bytes + row*bytes_per_row; + stbi_uc *row1 = bytes + (h - row - 1)*bytes_per_row; + // swap row0 with row1 + size_t bytes_left = bytes_per_row; + while (bytes_left) { + size_t bytes_copy = (bytes_left < sizeof(temp)) ? bytes_left : sizeof(temp); + memcpy(temp, row0, bytes_copy); + memcpy(row0, row1, bytes_copy); + memcpy(row1, temp, bytes_copy); + row0 += bytes_copy; + row1 += bytes_copy; + bytes_left -= bytes_copy; + } + } +} + +#ifndef STBI_NO_GIF +static void stbi__vertical_flip_slices(void *image, int w, int h, int z, int bytes_per_pixel) +{ + int slice; + int slice_size = w * h * bytes_per_pixel; + + stbi_uc *bytes = (stbi_uc *)image; + for (slice = 0; slice < z; ++slice) { + stbi__vertical_flip(bytes, w, h, bytes_per_pixel); + bytes += slice_size; + } +} +#endif + +static unsigned char *stbi__load_and_postprocess_8bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi__result_info ri; + void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 8); + + if (result == NULL) + return NULL; + + // it is the responsibility of the loaders to make sure we get either 8 or 16 bit. + STBI_ASSERT(ri.bits_per_channel == 8 || ri.bits_per_channel == 16); + + if (ri.bits_per_channel != 8) { + result = stbi__convert_16_to_8((stbi__uint16 *) result, *x, *y, req_comp == 0 ? *comp : req_comp); + ri.bits_per_channel = 8; + } + + // @TODO: move stbi__convert_format to here + + if (stbi__vertically_flip_on_load) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(stbi_uc)); + } + + return (unsigned char *) result; +} + +static stbi__uint16 *stbi__load_and_postprocess_16bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi__result_info ri; + void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 16); + + if (result == NULL) + return NULL; + + // it is the responsibility of the loaders to make sure we get either 8 or 16 bit. + STBI_ASSERT(ri.bits_per_channel == 8 || ri.bits_per_channel == 16); + + if (ri.bits_per_channel != 16) { + result = stbi__convert_8_to_16((stbi_uc *) result, *x, *y, req_comp == 0 ? *comp : req_comp); + ri.bits_per_channel = 16; + } + + // @TODO: move stbi__convert_format16 to here + // @TODO: special case RGB-to-Y (and RGBA-to-YA) for 8-bit-to-16-bit case to keep more precision + + if (stbi__vertically_flip_on_load) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(stbi__uint16)); + } + + return (stbi__uint16 *) result; +} + +#if !defined(STBI_NO_HDR) && !defined(STBI_NO_LINEAR) +static void stbi__float_postprocess(float *result, int *x, int *y, int *comp, int req_comp) +{ + if (stbi__vertically_flip_on_load && result != NULL) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(float)); + } +} +#endif + +#ifndef STBI_NO_STDIO + +#if defined(_WIN32) && defined(STBI_WINDOWS_UTF8) +STBI_EXTERN __declspec(dllimport) int __stdcall MultiByteToWideChar(unsigned int cp, unsigned long flags, const char *str, int cbmb, wchar_t *widestr, int cchwide); +STBI_EXTERN __declspec(dllimport) int __stdcall WideCharToMultiByte(unsigned int cp, unsigned long flags, const wchar_t *widestr, int cchwide, char *str, int cbmb, const char *defchar, int *used_default); +#endif + +#if defined(_WIN32) && defined(STBI_WINDOWS_UTF8) +STBIDEF int stbi_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input) +{ + return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, (int) bufferlen, NULL, NULL); +} +#endif + +static FILE *stbi__fopen(char const *filename, char const *mode) +{ + FILE *f; +#if defined(_WIN32) && defined(STBI_WINDOWS_UTF8) + wchar_t wMode[64]; + wchar_t wFilename[1024]; + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, filename, -1, wFilename, sizeof(wFilename)/sizeof(*wFilename))) + return 0; + + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, mode, -1, wMode, sizeof(wMode)/sizeof(*wMode))) + return 0; + +#if defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != _wfopen_s(&f, wFilename, wMode)) + f = 0; +#else + f = _wfopen(wFilename, wMode); +#endif + +#elif defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != fopen_s(&f, filename, mode)) + f=0; +#else + f = fopen(filename, mode); +#endif + return f; +} + + +STBIDEF stbi_uc *stbi_load(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + unsigned char *result; + if (!f) return stbi__errpuc("can't fopen", "Unable to open file"); + result = stbi_load_from_file(f,x,y,comp,req_comp); + fclose(f); + return result; +} + +STBIDEF stbi_uc *stbi_load_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + unsigned char *result; + stbi__context s; + stbi__start_file(&s,f); + result = stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); + if (result) { + // need to 'unget' all the characters in the IO buffer + fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); + } + return result; +} + +STBIDEF stbi__uint16 *stbi_load_from_file_16(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + stbi__uint16 *result; + stbi__context s; + stbi__start_file(&s,f); + result = stbi__load_and_postprocess_16bit(&s,x,y,comp,req_comp); + if (result) { + // need to 'unget' all the characters in the IO buffer + fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); + } + return result; +} + +STBIDEF stbi_us *stbi_load_16(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + stbi__uint16 *result; + if (!f) return (stbi_us *) stbi__errpuc("can't fopen", "Unable to open file"); + result = stbi_load_from_file_16(f,x,y,comp,req_comp); + fclose(f); + return result; +} + + +#endif //!STBI_NO_STDIO + +STBIDEF stbi_us *stbi_load_16_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__load_and_postprocess_16bit(&s,x,y,channels_in_file,desired_channels); +} + +STBIDEF stbi_us *stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *)clbk, user); + return stbi__load_and_postprocess_16bit(&s,x,y,channels_in_file,desired_channels); +} + +STBIDEF stbi_uc *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); +} + +STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); +} + +#ifndef STBI_NO_GIF +STBIDEF stbi_uc *stbi_load_gif_from_memory(stbi_uc const *buffer, int len, int **delays, int *x, int *y, int *z, int *comp, int req_comp) +{ + unsigned char *result; + stbi__context s; + stbi__start_mem(&s,buffer,len); + + result = (unsigned char*) stbi__load_gif_main(&s, delays, x, y, z, comp, req_comp); + if (stbi__vertically_flip_on_load) { + stbi__vertical_flip_slices( result, *x, *y, *z, *comp ); + } + + return result; +} +#endif + +#ifndef STBI_NO_LINEAR +static float *stbi__loadf_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + unsigned char *data; + #ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) { + stbi__result_info ri; + float *hdr_data = stbi__hdr_load(s,x,y,comp,req_comp, &ri); + if (hdr_data) + stbi__float_postprocess(hdr_data,x,y,comp,req_comp); + return hdr_data; + } + #endif + data = stbi__load_and_postprocess_8bit(s, x, y, comp, req_comp); + if (data) + return stbi__ldr_to_hdr(data, *x, *y, req_comp ? req_comp : *comp); + return stbi__errpf("unknown image type", "Image not of any known type, or corrupt"); +} + +STBIDEF float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} + +STBIDEF float *stbi_loadf_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} + +#ifndef STBI_NO_STDIO +STBIDEF float *stbi_loadf(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + float *result; + FILE *f = stbi__fopen(filename, "rb"); + if (!f) return stbi__errpf("can't fopen", "Unable to open file"); + result = stbi_loadf_from_file(f,x,y,comp,req_comp); + fclose(f); + return result; +} + +STBIDEF float *stbi_loadf_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_file(&s,f); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} +#endif // !STBI_NO_STDIO + +#endif // !STBI_NO_LINEAR + +// these is-hdr-or-not is defined independent of whether STBI_NO_LINEAR is +// defined, for API simplicity; if STBI_NO_LINEAR is defined, it always +// reports false! + +STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len) +{ + #ifndef STBI_NO_HDR + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__hdr_test(&s); + #else + STBI_NOTUSED(buffer); + STBI_NOTUSED(len); + return 0; + #endif +} + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_is_hdr (char const *filename) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result=0; + if (f) { + result = stbi_is_hdr_from_file(f); + fclose(f); + } + return result; +} + +STBIDEF int stbi_is_hdr_from_file(FILE *f) +{ + #ifndef STBI_NO_HDR + long pos = ftell(f); + int res; + stbi__context s; + stbi__start_file(&s,f); + res = stbi__hdr_test(&s); + fseek(f, pos, SEEK_SET); + return res; + #else + STBI_NOTUSED(f); + return 0; + #endif +} +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user) +{ + #ifndef STBI_NO_HDR + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__hdr_test(&s); + #else + STBI_NOTUSED(clbk); + STBI_NOTUSED(user); + return 0; + #endif +} + +#ifndef STBI_NO_LINEAR +static float stbi__l2h_gamma=2.2f, stbi__l2h_scale=1.0f; + +STBIDEF void stbi_ldr_to_hdr_gamma(float gamma) { stbi__l2h_gamma = gamma; } +STBIDEF void stbi_ldr_to_hdr_scale(float scale) { stbi__l2h_scale = scale; } +#endif + +static float stbi__h2l_gamma_i=1.0f/2.2f, stbi__h2l_scale_i=1.0f; + +STBIDEF void stbi_hdr_to_ldr_gamma(float gamma) { stbi__h2l_gamma_i = 1/gamma; } +STBIDEF void stbi_hdr_to_ldr_scale(float scale) { stbi__h2l_scale_i = 1/scale; } + + +////////////////////////////////////////////////////////////////////////////// +// +// Common code used by all image loaders +// + +enum +{ + STBI__SCAN_load=0, + STBI__SCAN_type, + STBI__SCAN_header +}; + +static void stbi__refill_buffer(stbi__context *s) +{ + int n = (s->io.read)(s->io_user_data,(char*)s->buffer_start,s->buflen); + s->callback_already_read += (int) (s->img_buffer - s->img_buffer_original); + if (n == 0) { + // at end of file, treat same as if from memory, but need to handle case + // where s->img_buffer isn't pointing to safe memory, e.g. 0-byte file + s->read_from_callbacks = 0; + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start+1; + *s->img_buffer = 0; + } else { + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start + n; + } +} + +stbi_inline static stbi_uc stbi__get8(stbi__context *s) +{ + if (s->img_buffer < s->img_buffer_end) + return *s->img_buffer++; + if (s->read_from_callbacks) { + stbi__refill_buffer(s); + return *s->img_buffer++; + } + return 0; +} + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_HDR) && defined(STBI_NO_PIC) && defined(STBI_NO_PNM) +// nothing +#else +stbi_inline static int stbi__at_eof(stbi__context *s) +{ + if (s->io.read) { + if (!(s->io.eof)(s->io_user_data)) return 0; + // if feof() is true, check if buffer = end + // special case: we've only got the special 0 character at the end + if (s->read_from_callbacks == 0) return 1; + } + + return s->img_buffer >= s->img_buffer_end; +} +#endif + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_PNG) && defined(STBI_NO_BMP) && defined(STBI_NO_PSD) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) && defined(STBI_NO_PIC) +// nothing +#else +static void stbi__skip(stbi__context *s, int n) +{ + if (n == 0) return; // already there! + if (n < 0) { + s->img_buffer = s->img_buffer_end; + return; + } + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + s->img_buffer = s->img_buffer_end; + (s->io.skip)(s->io_user_data, n - blen); + return; + } + } + s->img_buffer += n; +} +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_TGA) && defined(STBI_NO_HDR) && defined(STBI_NO_PNM) +// nothing +#else +static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n) +{ + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + int res, count; + + memcpy(buffer, s->img_buffer, blen); + + count = (s->io.read)(s->io_user_data, (char*) buffer + blen, n - blen); + res = (count == (n-blen)); + s->img_buffer = s->img_buffer_end; + return res; + } + } + + if (s->img_buffer+n <= s->img_buffer_end) { + memcpy(buffer, s->img_buffer, n); + s->img_buffer += n; + return 1; + } else + return 0; +} +#endif + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_PNG) && defined(STBI_NO_PSD) && defined(STBI_NO_PIC) +// nothing +#else +static int stbi__get16be(stbi__context *s) +{ + int z = stbi__get8(s); + return (z << 8) + stbi__get8(s); +} +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD) && defined(STBI_NO_PIC) +// nothing +#else +static stbi__uint32 stbi__get32be(stbi__context *s) +{ + stbi__uint32 z = stbi__get16be(s); + return (z << 16) + stbi__get16be(s); +} +#endif + +#if defined(STBI_NO_BMP) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) +// nothing +#else +static int stbi__get16le(stbi__context *s) +{ + int z = stbi__get8(s); + return z + (stbi__get8(s) << 8); +} +#endif + +#ifndef STBI_NO_BMP +static stbi__uint32 stbi__get32le(stbi__context *s) +{ + stbi__uint32 z = stbi__get16le(s); + z += (stbi__uint32)stbi__get16le(s) << 16; + return z; +} +#endif + +#define STBI__BYTECAST(x) ((stbi_uc) ((x) & 255)) // truncate int to byte without warnings + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_PNG) && defined(STBI_NO_BMP) && defined(STBI_NO_PSD) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) && defined(STBI_NO_PIC) && defined(STBI_NO_PNM) +// nothing +#else +////////////////////////////////////////////////////////////////////////////// +// +// generic converter from built-in img_n to req_comp +// individual types do this automatically as much as possible (e.g. jpeg +// does all cases internally since it needs to colorspace convert anyway, +// and it never has alpha, so very few cases ). png can automatically +// interleave an alpha=255 channel, but falls back to this for other cases +// +// assume data buffer is malloced, so malloc a new one and free that one +// only failure mode is malloc failing + +static stbi_uc stbi__compute_y(int r, int g, int b) +{ + return (stbi_uc) (((r*77) + (g*150) + (29*b)) >> 8); +} +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_BMP) && defined(STBI_NO_PSD) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) && defined(STBI_NO_PIC) && defined(STBI_NO_PNM) +// nothing +#else +static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) +{ + int i,j; + unsigned char *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (unsigned char *) stbi__malloc_mad3(req_comp, x, y, 0); + if (good == NULL) { + STBI_FREE(data); + return stbi__errpuc("outofmem", "Out of memory"); + } + + for (j=0; j < (int) y; ++j) { + unsigned char *src = data + j * x * img_n ; + unsigned char *dest = good + j * x * req_comp; + + #define STBI__COMBO(a,b) ((a)*8+(b)) + #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + // convert source image with img_n components to one with req_comp components; + // avoid switch per pixel, so use switch per scanline and massive macros + switch (STBI__COMBO(img_n, req_comp)) { + STBI__CASE(1,2) { dest[0]=src[0]; dest[1]=255; } break; + STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=255; } break; + STBI__CASE(2,1) { dest[0]=src[0]; } break; + STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=src[1]; } break; + STBI__CASE(3,4) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2];dest[3]=255; } break; + STBI__CASE(3,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; + STBI__CASE(3,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); dest[1] = 255; } break; + STBI__CASE(4,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; + STBI__CASE(4,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); dest[1] = src[3]; } break; + STBI__CASE(4,3) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2]; } break; + default: STBI_ASSERT(0); STBI_FREE(data); STBI_FREE(good); return stbi__errpuc("unsupported", "Unsupported format conversion"); + } + #undef STBI__CASE + } + + STBI_FREE(data); + return good; +} +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD) +// nothing +#else +static stbi__uint16 stbi__compute_y_16(int r, int g, int b) +{ + return (stbi__uint16) (((r*77) + (g*150) + (29*b)) >> 8); +} +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD) +// nothing +#else +static stbi__uint16 *stbi__convert_format16(stbi__uint16 *data, int img_n, int req_comp, unsigned int x, unsigned int y) +{ + int i,j; + stbi__uint16 *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (stbi__uint16 *) stbi__malloc(req_comp * x * y * 2); + if (good == NULL) { + STBI_FREE(data); + return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); + } + + for (j=0; j < (int) y; ++j) { + stbi__uint16 *src = data + j * x * img_n ; + stbi__uint16 *dest = good + j * x * req_comp; + + #define STBI__COMBO(a,b) ((a)*8+(b)) + #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + // convert source image with img_n components to one with req_comp components; + // avoid switch per pixel, so use switch per scanline and massive macros + switch (STBI__COMBO(img_n, req_comp)) { + STBI__CASE(1,2) { dest[0]=src[0]; dest[1]=0xffff; } break; + STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=0xffff; } break; + STBI__CASE(2,1) { dest[0]=src[0]; } break; + STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=src[1]; } break; + STBI__CASE(3,4) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2];dest[3]=0xffff; } break; + STBI__CASE(3,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; + STBI__CASE(3,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); dest[1] = 0xffff; } break; + STBI__CASE(4,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; + STBI__CASE(4,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); dest[1] = src[3]; } break; + STBI__CASE(4,3) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2]; } break; + default: STBI_ASSERT(0); STBI_FREE(data); STBI_FREE(good); return (stbi__uint16*) stbi__errpuc("unsupported", "Unsupported format conversion"); + } + #undef STBI__CASE + } + + STBI_FREE(data); + return good; +} +#endif + +#ifndef STBI_NO_LINEAR +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp) +{ + int i,k,n; + float *output; + if (!data) return NULL; + output = (float *) stbi__malloc_mad4(x, y, comp, sizeof(float), 0); + if (output == NULL) { STBI_FREE(data); return stbi__errpf("outofmem", "Out of memory"); } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp-1; + for (i=0; i < x*y; ++i) { + for (k=0; k < n; ++k) { + output[i*comp + k] = (float) (pow(data[i*comp+k]/255.0f, stbi__l2h_gamma) * stbi__l2h_scale); + } + } + if (n < comp) { + for (i=0; i < x*y; ++i) { + output[i*comp + n] = data[i*comp + n]/255.0f; + } + } + STBI_FREE(data); + return output; +} +#endif + +#ifndef STBI_NO_HDR +#define stbi__float2int(x) ((int) (x)) +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp) +{ + int i,k,n; + stbi_uc *output; + if (!data) return NULL; + output = (stbi_uc *) stbi__malloc_mad3(x, y, comp, 0); + if (output == NULL) { STBI_FREE(data); return stbi__errpuc("outofmem", "Out of memory"); } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp-1; + for (i=0; i < x*y; ++i) { + for (k=0; k < n; ++k) { + float z = (float) pow(data[i*comp+k]*stbi__h2l_scale_i, stbi__h2l_gamma_i) * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + if (k < comp) { + float z = data[i*comp+k] * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + } + STBI_FREE(data); + return output; +} +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// "baseline" JPEG/JFIF decoder +// +// simple implementation +// - doesn't support delayed output of y-dimension +// - simple interface (only one output format: 8-bit interleaved RGB) +// - doesn't try to recover corrupt jpegs +// - doesn't allow partial loading, loading multiple at once +// - still fast on x86 (copying globals into locals doesn't help x86) +// - allocates lots of intermediate memory (full size of all components) +// - non-interleaved case requires this anyway +// - allows good upsampling (see next) +// high-quality +// - upsampled channels are bilinearly interpolated, even across blocks +// - quality integer IDCT derived from IJG's 'slow' +// performance +// - fast huffman; reasonable integer IDCT +// - some SIMD kernels for common paths on targets with SSE2/NEON +// - uses a lot of intermediate memory, could cache poorly + +#ifndef STBI_NO_JPEG + +// huffman decoding acceleration +#define FAST_BITS 9 // larger handles more cases; smaller stomps less cache + +typedef struct +{ + stbi_uc fast[1 << FAST_BITS]; + // weirdly, repacking this into AoS is a 10% speed loss, instead of a win + stbi__uint16 code[256]; + stbi_uc values[256]; + stbi_uc size[257]; + unsigned int maxcode[18]; + int delta[17]; // old 'firstsymbol' - old 'firstcode' +} stbi__huffman; + +typedef struct +{ + stbi__context *s; + stbi__huffman huff_dc[4]; + stbi__huffman huff_ac[4]; + stbi__uint16 dequant[4][64]; + stbi__int16 fast_ac[4][1 << FAST_BITS]; + +// sizes for components, interleaved MCUs + int img_h_max, img_v_max; + int img_mcu_x, img_mcu_y; + int img_mcu_w, img_mcu_h; + +// definition of jpeg image component + struct + { + int id; + int h,v; + int tq; + int hd,ha; + int dc_pred; + + int x,y,w2,h2; + stbi_uc *data; + void *raw_data, *raw_coeff; + stbi_uc *linebuf; + short *coeff; // progressive only + int coeff_w, coeff_h; // number of 8x8 coefficient blocks + } img_comp[4]; + + stbi__uint32 code_buffer; // jpeg entropy-coded buffer + int code_bits; // number of valid bits + unsigned char marker; // marker seen while filling entropy buffer + int nomore; // flag if we saw a marker so must stop + + int progressive; + int spec_start; + int spec_end; + int succ_high; + int succ_low; + int eob_run; + int jfif; + int app14_color_transform; // Adobe APP14 tag + int rgb; + + int scan_n, order[4]; + int restart_interval, todo; + +// kernels + void (*idct_block_kernel)(stbi_uc *out, int out_stride, short data[64]); + void (*YCbCr_to_RGB_kernel)(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step); + stbi_uc *(*resample_row_hv_2_kernel)(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs); +} stbi__jpeg; + +static int stbi__build_huffman(stbi__huffman *h, int *count) +{ + int i,j,k=0; + unsigned int code; + // build size list for each symbol (from JPEG spec) + for (i=0; i < 16; ++i) { + for (j=0; j < count[i]; ++j) { + h->size[k++] = (stbi_uc) (i+1); + if(k >= 257) return stbi__err("bad size list","Corrupt JPEG"); + } + } + h->size[k] = 0; + + // compute actual symbols (from jpeg spec) + code = 0; + k = 0; + for(j=1; j <= 16; ++j) { + // compute delta to add to code to compute symbol id + h->delta[j] = k - code; + if (h->size[k] == j) { + while (h->size[k] == j) + h->code[k++] = (stbi__uint16) (code++); + if (code-1 >= (1u << j)) return stbi__err("bad code lengths","Corrupt JPEG"); + } + // compute largest code + 1 for this size, preshifted as needed later + h->maxcode[j] = code << (16-j); + code <<= 1; + } + h->maxcode[j] = 0xffffffff; + + // build non-spec acceleration table; 255 is flag for not-accelerated + memset(h->fast, 255, 1 << FAST_BITS); + for (i=0; i < k; ++i) { + int s = h->size[i]; + if (s <= FAST_BITS) { + int c = h->code[i] << (FAST_BITS-s); + int m = 1 << (FAST_BITS-s); + for (j=0; j < m; ++j) { + h->fast[c+j] = (stbi_uc) i; + } + } + } + return 1; +} + +// build a table that decodes both magnitude and value of small ACs in +// one go. +static void stbi__build_fast_ac(stbi__int16 *fast_ac, stbi__huffman *h) +{ + int i; + for (i=0; i < (1 << FAST_BITS); ++i) { + stbi_uc fast = h->fast[i]; + fast_ac[i] = 0; + if (fast < 255) { + int rs = h->values[fast]; + int run = (rs >> 4) & 15; + int magbits = rs & 15; + int len = h->size[fast]; + + if (magbits && len + magbits <= FAST_BITS) { + // magnitude code followed by receive_extend code + int k = ((i << len) & ((1 << FAST_BITS) - 1)) >> (FAST_BITS - magbits); + int m = 1 << (magbits - 1); + if (k < m) k += (~0U << magbits) + 1; + // if the result is small enough, we can fit it in fast_ac table + if (k >= -128 && k <= 127) + fast_ac[i] = (stbi__int16) ((k * 256) + (run * 16) + (len + magbits)); + } + } + } +} + +static void stbi__grow_buffer_unsafe(stbi__jpeg *j) +{ + do { + unsigned int b = j->nomore ? 0 : stbi__get8(j->s); + if (b == 0xff) { + int c = stbi__get8(j->s); + while (c == 0xff) c = stbi__get8(j->s); // consume fill bytes + if (c != 0) { + j->marker = (unsigned char) c; + j->nomore = 1; + return; + } + } + j->code_buffer |= b << (24 - j->code_bits); + j->code_bits += 8; + } while (j->code_bits <= 24); +} + +// (1 << n) - 1 +static const stbi__uint32 stbi__bmask[17]={0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535}; + +// decode a jpeg huffman value from the bitstream +stbi_inline static int stbi__jpeg_huff_decode(stbi__jpeg *j, stbi__huffman *h) +{ + unsigned int temp; + int c,k; + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + + // look at the top FAST_BITS and determine what symbol ID it is, + // if the code is <= FAST_BITS + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + k = h->fast[c]; + if (k < 255) { + int s = h->size[k]; + if (s > j->code_bits) + return -1; + j->code_buffer <<= s; + j->code_bits -= s; + return h->values[k]; + } + + // naive test is to shift the code_buffer down so k bits are + // valid, then test against maxcode. To speed this up, we've + // preshifted maxcode left so that it has (16-k) 0s at the + // end; in other words, regardless of the number of bits, it + // wants to be compared against something shifted to have 16; + // that way we don't need to shift inside the loop. + temp = j->code_buffer >> 16; + for (k=FAST_BITS+1 ; ; ++k) + if (temp < h->maxcode[k]) + break; + if (k == 17) { + // error! code not found + j->code_bits -= 16; + return -1; + } + + if (k > j->code_bits) + return -1; + + // convert the huffman code to the symbol id + c = ((j->code_buffer >> (32 - k)) & stbi__bmask[k]) + h->delta[k]; + if(c < 0 || c >= 256) // symbol id out of bounds! + return -1; + STBI_ASSERT((((j->code_buffer) >> (32 - h->size[c])) & stbi__bmask[h->size[c]]) == h->code[c]); + + // convert the id to a symbol + j->code_bits -= k; + j->code_buffer <<= k; + return h->values[c]; +} + +// bias[n] = (-1<code_bits < n) stbi__grow_buffer_unsafe(j); + if (j->code_bits < n) return 0; // ran out of bits from stream, return 0s intead of continuing + + sgn = j->code_buffer >> 31; // sign bit always in MSB; 0 if MSB clear (positive), 1 if MSB set (negative) + k = stbi_lrot(j->code_buffer, n); + j->code_buffer = k & ~stbi__bmask[n]; + k &= stbi__bmask[n]; + j->code_bits -= n; + return k + (stbi__jbias[n] & (sgn - 1)); +} + +// get some unsigned bits +stbi_inline static int stbi__jpeg_get_bits(stbi__jpeg *j, int n) +{ + unsigned int k; + if (j->code_bits < n) stbi__grow_buffer_unsafe(j); + if (j->code_bits < n) return 0; // ran out of bits from stream, return 0s intead of continuing + k = stbi_lrot(j->code_buffer, n); + j->code_buffer = k & ~stbi__bmask[n]; + k &= stbi__bmask[n]; + j->code_bits -= n; + return k; +} + +stbi_inline static int stbi__jpeg_get_bit(stbi__jpeg *j) +{ + unsigned int k; + if (j->code_bits < 1) stbi__grow_buffer_unsafe(j); + if (j->code_bits < 1) return 0; // ran out of bits from stream, return 0s intead of continuing + k = j->code_buffer; + j->code_buffer <<= 1; + --j->code_bits; + return k & 0x80000000; +} + +// given a value that's at position X in the zigzag stream, +// where does it appear in the 8x8 matrix coded as row-major? +static const stbi_uc stbi__jpeg_dezigzag[64+15] = +{ + 0, 1, 8, 16, 9, 2, 3, 10, + 17, 24, 32, 25, 18, 11, 4, 5, + 12, 19, 26, 33, 40, 48, 41, 34, + 27, 20, 13, 6, 7, 14, 21, 28, + 35, 42, 49, 56, 57, 50, 43, 36, + 29, 22, 15, 23, 30, 37, 44, 51, + 58, 59, 52, 45, 38, 31, 39, 46, + 53, 60, 61, 54, 47, 55, 62, 63, + // let corrupt input sample past end + 63, 63, 63, 63, 63, 63, 63, 63, + 63, 63, 63, 63, 63, 63, 63 +}; + +// decode one 64-entry block-- +static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman *hdc, stbi__huffman *hac, stbi__int16 *fac, int b, stbi__uint16 *dequant) +{ + int diff,dc,k; + int t; + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + t = stbi__jpeg_huff_decode(j, hdc); + if (t < 0 || t > 15) return stbi__err("bad huffman code","Corrupt JPEG"); + + // 0 all the ac values now so we can do it 32-bits at a time + memset(data,0,64*sizeof(data[0])); + + diff = t ? stbi__extend_receive(j, t) : 0; + if (!stbi__addints_valid(j->img_comp[b].dc_pred, diff)) return stbi__err("bad delta","Corrupt JPEG"); + dc = j->img_comp[b].dc_pred + diff; + j->img_comp[b].dc_pred = dc; + if (!stbi__mul2shorts_valid(dc, dequant[0])) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + data[0] = (short) (dc * dequant[0]); + + // decode AC components, see JPEG spec + k = 1; + do { + unsigned int zig; + int c,r,s; + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + r = fac[c]; + if (r) { // fast-AC path + k += (r >> 4) & 15; // run + s = r & 15; // combined length + if (s > j->code_bits) return stbi__err("bad huffman code", "Combined length longer than code bits available"); + j->code_buffer <<= s; + j->code_bits -= s; + // decode into unzigzag'd location + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) ((r >> 8) * dequant[zig]); + } else { + int rs = stbi__jpeg_huff_decode(j, hac); + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (rs != 0xf0) break; // end block + k += 16; + } else { + k += r; + // decode into unzigzag'd location + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) (stbi__extend_receive(j,s) * dequant[zig]); + } + } + } while (k < 64); + return 1; +} + +static int stbi__jpeg_decode_block_prog_dc(stbi__jpeg *j, short data[64], stbi__huffman *hdc, int b) +{ + int diff,dc; + int t; + if (j->spec_end != 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + + if (j->succ_high == 0) { + // first scan for DC coefficient, must be first + memset(data,0,64*sizeof(data[0])); // 0 all the ac values now + t = stbi__jpeg_huff_decode(j, hdc); + if (t < 0 || t > 15) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + diff = t ? stbi__extend_receive(j, t) : 0; + + if (!stbi__addints_valid(j->img_comp[b].dc_pred, diff)) return stbi__err("bad delta", "Corrupt JPEG"); + dc = j->img_comp[b].dc_pred + diff; + j->img_comp[b].dc_pred = dc; + if (!stbi__mul2shorts_valid(dc, 1 << j->succ_low)) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + data[0] = (short) (dc * (1 << j->succ_low)); + } else { + // refinement scan for DC coefficient + if (stbi__jpeg_get_bit(j)) + data[0] += (short) (1 << j->succ_low); + } + return 1; +} + +// @OPTIMIZE: store non-zigzagged during the decode passes, +// and only de-zigzag when dequantizing +static int stbi__jpeg_decode_block_prog_ac(stbi__jpeg *j, short data[64], stbi__huffman *hac, stbi__int16 *fac) +{ + int k; + if (j->spec_start == 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + + if (j->succ_high == 0) { + int shift = j->succ_low; + + if (j->eob_run) { + --j->eob_run; + return 1; + } + + k = j->spec_start; + do { + unsigned int zig; + int c,r,s; + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + r = fac[c]; + if (r) { // fast-AC path + k += (r >> 4) & 15; // run + s = r & 15; // combined length + if (s > j->code_bits) return stbi__err("bad huffman code", "Combined length longer than code bits available"); + j->code_buffer <<= s; + j->code_bits -= s; + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) ((r >> 8) * (1 << shift)); + } else { + int rs = stbi__jpeg_huff_decode(j, hac); + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (r < 15) { + j->eob_run = (1 << r); + if (r) + j->eob_run += stbi__jpeg_get_bits(j, r); + --j->eob_run; + break; + } + k += 16; + } else { + k += r; + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) (stbi__extend_receive(j,s) * (1 << shift)); + } + } + } while (k <= j->spec_end); + } else { + // refinement scan for these AC coefficients + + short bit = (short) (1 << j->succ_low); + + if (j->eob_run) { + --j->eob_run; + for (k = j->spec_start; k <= j->spec_end; ++k) { + short *p = &data[stbi__jpeg_dezigzag[k]]; + if (*p != 0) + if (stbi__jpeg_get_bit(j)) + if ((*p & bit)==0) { + if (*p > 0) + *p += bit; + else + *p -= bit; + } + } + } else { + k = j->spec_start; + do { + int r,s; + int rs = stbi__jpeg_huff_decode(j, hac); // @OPTIMIZE see if we can use the fast path here, advance-by-r is so slow, eh + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (r < 15) { + j->eob_run = (1 << r) - 1; + if (r) + j->eob_run += stbi__jpeg_get_bits(j, r); + r = 64; // force end of block + } else { + // r=15 s=0 should write 16 0s, so we just do + // a run of 15 0s and then write s (which is 0), + // so we don't have to do anything special here + } + } else { + if (s != 1) return stbi__err("bad huffman code", "Corrupt JPEG"); + // sign bit + if (stbi__jpeg_get_bit(j)) + s = bit; + else + s = -bit; + } + + // advance by r + while (k <= j->spec_end) { + short *p = &data[stbi__jpeg_dezigzag[k++]]; + if (*p != 0) { + if (stbi__jpeg_get_bit(j)) + if ((*p & bit)==0) { + if (*p > 0) + *p += bit; + else + *p -= bit; + } + } else { + if (r == 0) { + *p = (short) s; + break; + } + --r; + } + } + } while (k <= j->spec_end); + } + } + return 1; +} + +// take a -128..127 value and stbi__clamp it and convert to 0..255 +stbi_inline static stbi_uc stbi__clamp(int x) +{ + // trick to use a single test to catch both cases + if ((unsigned int) x > 255) { + if (x < 0) return 0; + if (x > 255) return 255; + } + return (stbi_uc) x; +} + +#define stbi__f2f(x) ((int) (((x) * 4096 + 0.5))) +#define stbi__fsh(x) ((x) * 4096) + +// derived from jidctint -- DCT_ISLOW +#define STBI__IDCT_1D(s0,s1,s2,s3,s4,s5,s6,s7) \ + int t0,t1,t2,t3,p1,p2,p3,p4,p5,x0,x1,x2,x3; \ + p2 = s2; \ + p3 = s6; \ + p1 = (p2+p3) * stbi__f2f(0.5411961f); \ + t2 = p1 + p3*stbi__f2f(-1.847759065f); \ + t3 = p1 + p2*stbi__f2f( 0.765366865f); \ + p2 = s0; \ + p3 = s4; \ + t0 = stbi__fsh(p2+p3); \ + t1 = stbi__fsh(p2-p3); \ + x0 = t0+t3; \ + x3 = t0-t3; \ + x1 = t1+t2; \ + x2 = t1-t2; \ + t0 = s7; \ + t1 = s5; \ + t2 = s3; \ + t3 = s1; \ + p3 = t0+t2; \ + p4 = t1+t3; \ + p1 = t0+t3; \ + p2 = t1+t2; \ + p5 = (p3+p4)*stbi__f2f( 1.175875602f); \ + t0 = t0*stbi__f2f( 0.298631336f); \ + t1 = t1*stbi__f2f( 2.053119869f); \ + t2 = t2*stbi__f2f( 3.072711026f); \ + t3 = t3*stbi__f2f( 1.501321110f); \ + p1 = p5 + p1*stbi__f2f(-0.899976223f); \ + p2 = p5 + p2*stbi__f2f(-2.562915447f); \ + p3 = p3*stbi__f2f(-1.961570560f); \ + p4 = p4*stbi__f2f(-0.390180644f); \ + t3 += p1+p4; \ + t2 += p2+p3; \ + t1 += p2+p4; \ + t0 += p1+p3; + +static void stbi__idct_block(stbi_uc *out, int out_stride, short data[64]) +{ + int i,val[64],*v=val; + stbi_uc *o; + short *d = data; + + // columns + for (i=0; i < 8; ++i,++d, ++v) { + // if all zeroes, shortcut -- this avoids dequantizing 0s and IDCTing + if (d[ 8]==0 && d[16]==0 && d[24]==0 && d[32]==0 + && d[40]==0 && d[48]==0 && d[56]==0) { + // no shortcut 0 seconds + // (1|2|3|4|5|6|7)==0 0 seconds + // all separate -0.047 seconds + // 1 && 2|3 && 4|5 && 6|7: -0.047 seconds + int dcterm = d[0]*4; + v[0] = v[8] = v[16] = v[24] = v[32] = v[40] = v[48] = v[56] = dcterm; + } else { + STBI__IDCT_1D(d[ 0],d[ 8],d[16],d[24],d[32],d[40],d[48],d[56]) + // constants scaled things up by 1<<12; let's bring them back + // down, but keep 2 extra bits of precision + x0 += 512; x1 += 512; x2 += 512; x3 += 512; + v[ 0] = (x0+t3) >> 10; + v[56] = (x0-t3) >> 10; + v[ 8] = (x1+t2) >> 10; + v[48] = (x1-t2) >> 10; + v[16] = (x2+t1) >> 10; + v[40] = (x2-t1) >> 10; + v[24] = (x3+t0) >> 10; + v[32] = (x3-t0) >> 10; + } + } + + for (i=0, v=val, o=out; i < 8; ++i,v+=8,o+=out_stride) { + // no fast case since the first 1D IDCT spread components out + STBI__IDCT_1D(v[0],v[1],v[2],v[3],v[4],v[5],v[6],v[7]) + // constants scaled things up by 1<<12, plus we had 1<<2 from first + // loop, plus horizontal and vertical each scale by sqrt(8) so together + // we've got an extra 1<<3, so 1<<17 total we need to remove. + // so we want to round that, which means adding 0.5 * 1<<17, + // aka 65536. Also, we'll end up with -128 to 127 that we want + // to encode as 0..255 by adding 128, so we'll add that before the shift + x0 += 65536 + (128<<17); + x1 += 65536 + (128<<17); + x2 += 65536 + (128<<17); + x3 += 65536 + (128<<17); + // tried computing the shifts into temps, or'ing the temps to see + // if any were out of range, but that was slower + o[0] = stbi__clamp((x0+t3) >> 17); + o[7] = stbi__clamp((x0-t3) >> 17); + o[1] = stbi__clamp((x1+t2) >> 17); + o[6] = stbi__clamp((x1-t2) >> 17); + o[2] = stbi__clamp((x2+t1) >> 17); + o[5] = stbi__clamp((x2-t1) >> 17); + o[3] = stbi__clamp((x3+t0) >> 17); + o[4] = stbi__clamp((x3-t0) >> 17); + } +} + +#ifdef STBI_SSE2 +// sse2 integer IDCT. not the fastest possible implementation but it +// produces bit-identical results to the generic C version so it's +// fully "transparent". +static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) +{ + // This is constructed to match our regular (generic) integer IDCT exactly. + __m128i row0, row1, row2, row3, row4, row5, row6, row7; + __m128i tmp; + + // dot product constant: even elems=x, odd elems=y + #define dct_const(x,y) _mm_setr_epi16((x),(y),(x),(y),(x),(y),(x),(y)) + + // out(0) = c0[even]*x + c0[odd]*y (c0, x, y 16-bit, out 32-bit) + // out(1) = c1[even]*x + c1[odd]*y + #define dct_rot(out0,out1, x,y,c0,c1) \ + __m128i c0##lo = _mm_unpacklo_epi16((x),(y)); \ + __m128i c0##hi = _mm_unpackhi_epi16((x),(y)); \ + __m128i out0##_l = _mm_madd_epi16(c0##lo, c0); \ + __m128i out0##_h = _mm_madd_epi16(c0##hi, c0); \ + __m128i out1##_l = _mm_madd_epi16(c0##lo, c1); \ + __m128i out1##_h = _mm_madd_epi16(c0##hi, c1) + + // out = in << 12 (in 16-bit, out 32-bit) + #define dct_widen(out, in) \ + __m128i out##_l = _mm_srai_epi32(_mm_unpacklo_epi16(_mm_setzero_si128(), (in)), 4); \ + __m128i out##_h = _mm_srai_epi32(_mm_unpackhi_epi16(_mm_setzero_si128(), (in)), 4) + + // wide add + #define dct_wadd(out, a, b) \ + __m128i out##_l = _mm_add_epi32(a##_l, b##_l); \ + __m128i out##_h = _mm_add_epi32(a##_h, b##_h) + + // wide sub + #define dct_wsub(out, a, b) \ + __m128i out##_l = _mm_sub_epi32(a##_l, b##_l); \ + __m128i out##_h = _mm_sub_epi32(a##_h, b##_h) + + // butterfly a/b, add bias, then shift by "s" and pack + #define dct_bfly32o(out0, out1, a,b,bias,s) \ + { \ + __m128i abiased_l = _mm_add_epi32(a##_l, bias); \ + __m128i abiased_h = _mm_add_epi32(a##_h, bias); \ + dct_wadd(sum, abiased, b); \ + dct_wsub(dif, abiased, b); \ + out0 = _mm_packs_epi32(_mm_srai_epi32(sum_l, s), _mm_srai_epi32(sum_h, s)); \ + out1 = _mm_packs_epi32(_mm_srai_epi32(dif_l, s), _mm_srai_epi32(dif_h, s)); \ + } + + // 8-bit interleave step (for transposes) + #define dct_interleave8(a, b) \ + tmp = a; \ + a = _mm_unpacklo_epi8(a, b); \ + b = _mm_unpackhi_epi8(tmp, b) + + // 16-bit interleave step (for transposes) + #define dct_interleave16(a, b) \ + tmp = a; \ + a = _mm_unpacklo_epi16(a, b); \ + b = _mm_unpackhi_epi16(tmp, b) + + #define dct_pass(bias,shift) \ + { \ + /* even part */ \ + dct_rot(t2e,t3e, row2,row6, rot0_0,rot0_1); \ + __m128i sum04 = _mm_add_epi16(row0, row4); \ + __m128i dif04 = _mm_sub_epi16(row0, row4); \ + dct_widen(t0e, sum04); \ + dct_widen(t1e, dif04); \ + dct_wadd(x0, t0e, t3e); \ + dct_wsub(x3, t0e, t3e); \ + dct_wadd(x1, t1e, t2e); \ + dct_wsub(x2, t1e, t2e); \ + /* odd part */ \ + dct_rot(y0o,y2o, row7,row3, rot2_0,rot2_1); \ + dct_rot(y1o,y3o, row5,row1, rot3_0,rot3_1); \ + __m128i sum17 = _mm_add_epi16(row1, row7); \ + __m128i sum35 = _mm_add_epi16(row3, row5); \ + dct_rot(y4o,y5o, sum17,sum35, rot1_0,rot1_1); \ + dct_wadd(x4, y0o, y4o); \ + dct_wadd(x5, y1o, y5o); \ + dct_wadd(x6, y2o, y5o); \ + dct_wadd(x7, y3o, y4o); \ + dct_bfly32o(row0,row7, x0,x7,bias,shift); \ + dct_bfly32o(row1,row6, x1,x6,bias,shift); \ + dct_bfly32o(row2,row5, x2,x5,bias,shift); \ + dct_bfly32o(row3,row4, x3,x4,bias,shift); \ + } + + __m128i rot0_0 = dct_const(stbi__f2f(0.5411961f), stbi__f2f(0.5411961f) + stbi__f2f(-1.847759065f)); + __m128i rot0_1 = dct_const(stbi__f2f(0.5411961f) + stbi__f2f( 0.765366865f), stbi__f2f(0.5411961f)); + __m128i rot1_0 = dct_const(stbi__f2f(1.175875602f) + stbi__f2f(-0.899976223f), stbi__f2f(1.175875602f)); + __m128i rot1_1 = dct_const(stbi__f2f(1.175875602f), stbi__f2f(1.175875602f) + stbi__f2f(-2.562915447f)); + __m128i rot2_0 = dct_const(stbi__f2f(-1.961570560f) + stbi__f2f( 0.298631336f), stbi__f2f(-1.961570560f)); + __m128i rot2_1 = dct_const(stbi__f2f(-1.961570560f), stbi__f2f(-1.961570560f) + stbi__f2f( 3.072711026f)); + __m128i rot3_0 = dct_const(stbi__f2f(-0.390180644f) + stbi__f2f( 2.053119869f), stbi__f2f(-0.390180644f)); + __m128i rot3_1 = dct_const(stbi__f2f(-0.390180644f), stbi__f2f(-0.390180644f) + stbi__f2f( 1.501321110f)); + + // rounding biases in column/row passes, see stbi__idct_block for explanation. + __m128i bias_0 = _mm_set1_epi32(512); + __m128i bias_1 = _mm_set1_epi32(65536 + (128<<17)); + + // load + row0 = _mm_load_si128((const __m128i *) (data + 0*8)); + row1 = _mm_load_si128((const __m128i *) (data + 1*8)); + row2 = _mm_load_si128((const __m128i *) (data + 2*8)); + row3 = _mm_load_si128((const __m128i *) (data + 3*8)); + row4 = _mm_load_si128((const __m128i *) (data + 4*8)); + row5 = _mm_load_si128((const __m128i *) (data + 5*8)); + row6 = _mm_load_si128((const __m128i *) (data + 6*8)); + row7 = _mm_load_si128((const __m128i *) (data + 7*8)); + + // column pass + dct_pass(bias_0, 10); + + { + // 16bit 8x8 transpose pass 1 + dct_interleave16(row0, row4); + dct_interleave16(row1, row5); + dct_interleave16(row2, row6); + dct_interleave16(row3, row7); + + // transpose pass 2 + dct_interleave16(row0, row2); + dct_interleave16(row1, row3); + dct_interleave16(row4, row6); + dct_interleave16(row5, row7); + + // transpose pass 3 + dct_interleave16(row0, row1); + dct_interleave16(row2, row3); + dct_interleave16(row4, row5); + dct_interleave16(row6, row7); + } + + // row pass + dct_pass(bias_1, 17); + + { + // pack + __m128i p0 = _mm_packus_epi16(row0, row1); // a0a1a2a3...a7b0b1b2b3...b7 + __m128i p1 = _mm_packus_epi16(row2, row3); + __m128i p2 = _mm_packus_epi16(row4, row5); + __m128i p3 = _mm_packus_epi16(row6, row7); + + // 8bit 8x8 transpose pass 1 + dct_interleave8(p0, p2); // a0e0a1e1... + dct_interleave8(p1, p3); // c0g0c1g1... + + // transpose pass 2 + dct_interleave8(p0, p1); // a0c0e0g0... + dct_interleave8(p2, p3); // b0d0f0h0... + + // transpose pass 3 + dct_interleave8(p0, p2); // a0b0c0d0... + dct_interleave8(p1, p3); // a4b4c4d4... + + // store + _mm_storel_epi64((__m128i *) out, p0); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p0, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p2); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p2, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p1); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p1, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p3); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p3, 0x4e)); + } + +#undef dct_const +#undef dct_rot +#undef dct_widen +#undef dct_wadd +#undef dct_wsub +#undef dct_bfly32o +#undef dct_interleave8 +#undef dct_interleave16 +#undef dct_pass +} + +#endif // STBI_SSE2 + +#ifdef STBI_NEON + +// NEON integer IDCT. should produce bit-identical +// results to the generic C version. +static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) +{ + int16x8_t row0, row1, row2, row3, row4, row5, row6, row7; + + int16x4_t rot0_0 = vdup_n_s16(stbi__f2f(0.5411961f)); + int16x4_t rot0_1 = vdup_n_s16(stbi__f2f(-1.847759065f)); + int16x4_t rot0_2 = vdup_n_s16(stbi__f2f( 0.765366865f)); + int16x4_t rot1_0 = vdup_n_s16(stbi__f2f( 1.175875602f)); + int16x4_t rot1_1 = vdup_n_s16(stbi__f2f(-0.899976223f)); + int16x4_t rot1_2 = vdup_n_s16(stbi__f2f(-2.562915447f)); + int16x4_t rot2_0 = vdup_n_s16(stbi__f2f(-1.961570560f)); + int16x4_t rot2_1 = vdup_n_s16(stbi__f2f(-0.390180644f)); + int16x4_t rot3_0 = vdup_n_s16(stbi__f2f( 0.298631336f)); + int16x4_t rot3_1 = vdup_n_s16(stbi__f2f( 2.053119869f)); + int16x4_t rot3_2 = vdup_n_s16(stbi__f2f( 3.072711026f)); + int16x4_t rot3_3 = vdup_n_s16(stbi__f2f( 1.501321110f)); + +#define dct_long_mul(out, inq, coeff) \ + int32x4_t out##_l = vmull_s16(vget_low_s16(inq), coeff); \ + int32x4_t out##_h = vmull_s16(vget_high_s16(inq), coeff) + +#define dct_long_mac(out, acc, inq, coeff) \ + int32x4_t out##_l = vmlal_s16(acc##_l, vget_low_s16(inq), coeff); \ + int32x4_t out##_h = vmlal_s16(acc##_h, vget_high_s16(inq), coeff) + +#define dct_widen(out, inq) \ + int32x4_t out##_l = vshll_n_s16(vget_low_s16(inq), 12); \ + int32x4_t out##_h = vshll_n_s16(vget_high_s16(inq), 12) + +// wide add +#define dct_wadd(out, a, b) \ + int32x4_t out##_l = vaddq_s32(a##_l, b##_l); \ + int32x4_t out##_h = vaddq_s32(a##_h, b##_h) + +// wide sub +#define dct_wsub(out, a, b) \ + int32x4_t out##_l = vsubq_s32(a##_l, b##_l); \ + int32x4_t out##_h = vsubq_s32(a##_h, b##_h) + +// butterfly a/b, then shift using "shiftop" by "s" and pack +#define dct_bfly32o(out0,out1, a,b,shiftop,s) \ + { \ + dct_wadd(sum, a, b); \ + dct_wsub(dif, a, b); \ + out0 = vcombine_s16(shiftop(sum_l, s), shiftop(sum_h, s)); \ + out1 = vcombine_s16(shiftop(dif_l, s), shiftop(dif_h, s)); \ + } + +#define dct_pass(shiftop, shift) \ + { \ + /* even part */ \ + int16x8_t sum26 = vaddq_s16(row2, row6); \ + dct_long_mul(p1e, sum26, rot0_0); \ + dct_long_mac(t2e, p1e, row6, rot0_1); \ + dct_long_mac(t3e, p1e, row2, rot0_2); \ + int16x8_t sum04 = vaddq_s16(row0, row4); \ + int16x8_t dif04 = vsubq_s16(row0, row4); \ + dct_widen(t0e, sum04); \ + dct_widen(t1e, dif04); \ + dct_wadd(x0, t0e, t3e); \ + dct_wsub(x3, t0e, t3e); \ + dct_wadd(x1, t1e, t2e); \ + dct_wsub(x2, t1e, t2e); \ + /* odd part */ \ + int16x8_t sum15 = vaddq_s16(row1, row5); \ + int16x8_t sum17 = vaddq_s16(row1, row7); \ + int16x8_t sum35 = vaddq_s16(row3, row5); \ + int16x8_t sum37 = vaddq_s16(row3, row7); \ + int16x8_t sumodd = vaddq_s16(sum17, sum35); \ + dct_long_mul(p5o, sumodd, rot1_0); \ + dct_long_mac(p1o, p5o, sum17, rot1_1); \ + dct_long_mac(p2o, p5o, sum35, rot1_2); \ + dct_long_mul(p3o, sum37, rot2_0); \ + dct_long_mul(p4o, sum15, rot2_1); \ + dct_wadd(sump13o, p1o, p3o); \ + dct_wadd(sump24o, p2o, p4o); \ + dct_wadd(sump23o, p2o, p3o); \ + dct_wadd(sump14o, p1o, p4o); \ + dct_long_mac(x4, sump13o, row7, rot3_0); \ + dct_long_mac(x5, sump24o, row5, rot3_1); \ + dct_long_mac(x6, sump23o, row3, rot3_2); \ + dct_long_mac(x7, sump14o, row1, rot3_3); \ + dct_bfly32o(row0,row7, x0,x7,shiftop,shift); \ + dct_bfly32o(row1,row6, x1,x6,shiftop,shift); \ + dct_bfly32o(row2,row5, x2,x5,shiftop,shift); \ + dct_bfly32o(row3,row4, x3,x4,shiftop,shift); \ + } + + // load + row0 = vld1q_s16(data + 0*8); + row1 = vld1q_s16(data + 1*8); + row2 = vld1q_s16(data + 2*8); + row3 = vld1q_s16(data + 3*8); + row4 = vld1q_s16(data + 4*8); + row5 = vld1q_s16(data + 5*8); + row6 = vld1q_s16(data + 6*8); + row7 = vld1q_s16(data + 7*8); + + // add DC bias + row0 = vaddq_s16(row0, vsetq_lane_s16(1024, vdupq_n_s16(0), 0)); + + // column pass + dct_pass(vrshrn_n_s32, 10); + + // 16bit 8x8 transpose + { +// these three map to a single VTRN.16, VTRN.32, and VSWP, respectively. +// whether compilers actually get this is another story, sadly. +#define dct_trn16(x, y) { int16x8x2_t t = vtrnq_s16(x, y); x = t.val[0]; y = t.val[1]; } +#define dct_trn32(x, y) { int32x4x2_t t = vtrnq_s32(vreinterpretq_s32_s16(x), vreinterpretq_s32_s16(y)); x = vreinterpretq_s16_s32(t.val[0]); y = vreinterpretq_s16_s32(t.val[1]); } +#define dct_trn64(x, y) { int16x8_t x0 = x; int16x8_t y0 = y; x = vcombine_s16(vget_low_s16(x0), vget_low_s16(y0)); y = vcombine_s16(vget_high_s16(x0), vget_high_s16(y0)); } + + // pass 1 + dct_trn16(row0, row1); // a0b0a2b2a4b4a6b6 + dct_trn16(row2, row3); + dct_trn16(row4, row5); + dct_trn16(row6, row7); + + // pass 2 + dct_trn32(row0, row2); // a0b0c0d0a4b4c4d4 + dct_trn32(row1, row3); + dct_trn32(row4, row6); + dct_trn32(row5, row7); + + // pass 3 + dct_trn64(row0, row4); // a0b0c0d0e0f0g0h0 + dct_trn64(row1, row5); + dct_trn64(row2, row6); + dct_trn64(row3, row7); + +#undef dct_trn16 +#undef dct_trn32 +#undef dct_trn64 + } + + // row pass + // vrshrn_n_s32 only supports shifts up to 16, we need + // 17. so do a non-rounding shift of 16 first then follow + // up with a rounding shift by 1. + dct_pass(vshrn_n_s32, 16); + + { + // pack and round + uint8x8_t p0 = vqrshrun_n_s16(row0, 1); + uint8x8_t p1 = vqrshrun_n_s16(row1, 1); + uint8x8_t p2 = vqrshrun_n_s16(row2, 1); + uint8x8_t p3 = vqrshrun_n_s16(row3, 1); + uint8x8_t p4 = vqrshrun_n_s16(row4, 1); + uint8x8_t p5 = vqrshrun_n_s16(row5, 1); + uint8x8_t p6 = vqrshrun_n_s16(row6, 1); + uint8x8_t p7 = vqrshrun_n_s16(row7, 1); + + // again, these can translate into one instruction, but often don't. +#define dct_trn8_8(x, y) { uint8x8x2_t t = vtrn_u8(x, y); x = t.val[0]; y = t.val[1]; } +#define dct_trn8_16(x, y) { uint16x4x2_t t = vtrn_u16(vreinterpret_u16_u8(x), vreinterpret_u16_u8(y)); x = vreinterpret_u8_u16(t.val[0]); y = vreinterpret_u8_u16(t.val[1]); } +#define dct_trn8_32(x, y) { uint32x2x2_t t = vtrn_u32(vreinterpret_u32_u8(x), vreinterpret_u32_u8(y)); x = vreinterpret_u8_u32(t.val[0]); y = vreinterpret_u8_u32(t.val[1]); } + + // sadly can't use interleaved stores here since we only write + // 8 bytes to each scan line! + + // 8x8 8-bit transpose pass 1 + dct_trn8_8(p0, p1); + dct_trn8_8(p2, p3); + dct_trn8_8(p4, p5); + dct_trn8_8(p6, p7); + + // pass 2 + dct_trn8_16(p0, p2); + dct_trn8_16(p1, p3); + dct_trn8_16(p4, p6); + dct_trn8_16(p5, p7); + + // pass 3 + dct_trn8_32(p0, p4); + dct_trn8_32(p1, p5); + dct_trn8_32(p2, p6); + dct_trn8_32(p3, p7); + + // store + vst1_u8(out, p0); out += out_stride; + vst1_u8(out, p1); out += out_stride; + vst1_u8(out, p2); out += out_stride; + vst1_u8(out, p3); out += out_stride; + vst1_u8(out, p4); out += out_stride; + vst1_u8(out, p5); out += out_stride; + vst1_u8(out, p6); out += out_stride; + vst1_u8(out, p7); + +#undef dct_trn8_8 +#undef dct_trn8_16 +#undef dct_trn8_32 + } + +#undef dct_long_mul +#undef dct_long_mac +#undef dct_widen +#undef dct_wadd +#undef dct_wsub +#undef dct_bfly32o +#undef dct_pass +} + +#endif // STBI_NEON + +#define STBI__MARKER_none 0xff +// if there's a pending marker from the entropy stream, return that +// otherwise, fetch from the stream and get a marker. if there's no +// marker, return 0xff, which is never a valid marker value +static stbi_uc stbi__get_marker(stbi__jpeg *j) +{ + stbi_uc x; + if (j->marker != STBI__MARKER_none) { x = j->marker; j->marker = STBI__MARKER_none; return x; } + x = stbi__get8(j->s); + if (x != 0xff) return STBI__MARKER_none; + while (x == 0xff) + x = stbi__get8(j->s); // consume repeated 0xff fill bytes + return x; +} + +// in each scan, we'll have scan_n components, and the order +// of the components is specified by order[] +#define STBI__RESTART(x) ((x) >= 0xd0 && (x) <= 0xd7) + +// after a restart interval, stbi__jpeg_reset the entropy decoder and +// the dc prediction +static void stbi__jpeg_reset(stbi__jpeg *j) +{ + j->code_bits = 0; + j->code_buffer = 0; + j->nomore = 0; + j->img_comp[0].dc_pred = j->img_comp[1].dc_pred = j->img_comp[2].dc_pred = j->img_comp[3].dc_pred = 0; + j->marker = STBI__MARKER_none; + j->todo = j->restart_interval ? j->restart_interval : 0x7fffffff; + j->eob_run = 0; + // no more than 1<<31 MCUs if no restart_interal? that's plenty safe, + // since we don't even allow 1<<30 pixels +} + +static int stbi__parse_entropy_coded_data(stbi__jpeg *z) +{ + stbi__jpeg_reset(z); + if (!z->progressive) { + if (z->scan_n == 1) { + int i,j; + STBI_SIMD_ALIGN(short, data[64]); + int n = z->order[0]; + // non-interleaved data, we just need to process one block at a time, + // in trivial scanline order + // number of blocks to do just depends on how many actual "pixels" this + // component has, independent of interleaved MCU blocking and such + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); + // every data block is an MCU, so countdown the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + // if it's NOT a restart, then just bail, so we get corrupt data + // rather than no data + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } else { // interleaved + int i,j,k,x,y; + STBI_SIMD_ALIGN(short, data[64]); + for (j=0; j < z->img_mcu_y; ++j) { + for (i=0; i < z->img_mcu_x; ++i) { + // scan an interleaved mcu... process scan_n components in order + for (k=0; k < z->scan_n; ++k) { + int n = z->order[k]; + // scan out an mcu's worth of this component; that's just determined + // by the basic H and V specified for the component + for (y=0; y < z->img_comp[n].v; ++y) { + for (x=0; x < z->img_comp[n].h; ++x) { + int x2 = (i*z->img_comp[n].h + x)*8; + int y2 = (j*z->img_comp[n].v + y)*8; + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data); + } + } + } + // after all interleaved components, that's an interleaved MCU, + // so now count down the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } + } else { + if (z->scan_n == 1) { + int i,j; + int n = z->order[0]; + // non-interleaved data, we just need to process one block at a time, + // in trivial scanline order + // number of blocks to do just depends on how many actual "pixels" this + // component has, independent of interleaved MCU blocking and such + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); + if (z->spec_start == 0) { + if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) + return 0; + } else { + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block_prog_ac(z, data, &z->huff_ac[ha], z->fast_ac[ha])) + return 0; + } + // every data block is an MCU, so countdown the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } else { // interleaved + int i,j,k,x,y; + for (j=0; j < z->img_mcu_y; ++j) { + for (i=0; i < z->img_mcu_x; ++i) { + // scan an interleaved mcu... process scan_n components in order + for (k=0; k < z->scan_n; ++k) { + int n = z->order[k]; + // scan out an mcu's worth of this component; that's just determined + // by the basic H and V specified for the component + for (y=0; y < z->img_comp[n].v; ++y) { + for (x=0; x < z->img_comp[n].h; ++x) { + int x2 = (i*z->img_comp[n].h + x); + int y2 = (j*z->img_comp[n].v + y); + short *data = z->img_comp[n].coeff + 64 * (x2 + y2 * z->img_comp[n].coeff_w); + if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) + return 0; + } + } + } + // after all interleaved components, that's an interleaved MCU, + // so now count down the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } + } +} + +static void stbi__jpeg_dequantize(short *data, stbi__uint16 *dequant) +{ + int i; + for (i=0; i < 64; ++i) + data[i] *= dequant[i]; +} + +static void stbi__jpeg_finish(stbi__jpeg *z) +{ + if (z->progressive) { + // dequantize and idct the data + int i,j,n; + for (n=0; n < z->s->img_n; ++n) { + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); + stbi__jpeg_dequantize(data, z->dequant[z->img_comp[n].tq]); + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); + } + } + } + } +} + +static int stbi__process_marker(stbi__jpeg *z, int m) +{ + int L; + switch (m) { + case STBI__MARKER_none: // no marker found + return stbi__err("expected marker","Corrupt JPEG"); + + case 0xDD: // DRI - specify restart interval + if (stbi__get16be(z->s) != 4) return stbi__err("bad DRI len","Corrupt JPEG"); + z->restart_interval = stbi__get16be(z->s); + return 1; + + case 0xDB: // DQT - define quantization table + L = stbi__get16be(z->s)-2; + while (L > 0) { + int q = stbi__get8(z->s); + int p = q >> 4, sixteen = (p != 0); + int t = q & 15,i; + if (p != 0 && p != 1) return stbi__err("bad DQT type","Corrupt JPEG"); + if (t > 3) return stbi__err("bad DQT table","Corrupt JPEG"); + + for (i=0; i < 64; ++i) + z->dequant[t][stbi__jpeg_dezigzag[i]] = (stbi__uint16)(sixteen ? stbi__get16be(z->s) : stbi__get8(z->s)); + L -= (sixteen ? 129 : 65); + } + return L==0; + + case 0xC4: // DHT - define huffman table + L = stbi__get16be(z->s)-2; + while (L > 0) { + stbi_uc *v; + int sizes[16],i,n=0; + int q = stbi__get8(z->s); + int tc = q >> 4; + int th = q & 15; + if (tc > 1 || th > 3) return stbi__err("bad DHT header","Corrupt JPEG"); + for (i=0; i < 16; ++i) { + sizes[i] = stbi__get8(z->s); + n += sizes[i]; + } + if(n > 256) return stbi__err("bad DHT header","Corrupt JPEG"); // Loop over i < n would write past end of values! + L -= 17; + if (tc == 0) { + if (!stbi__build_huffman(z->huff_dc+th, sizes)) return 0; + v = z->huff_dc[th].values; + } else { + if (!stbi__build_huffman(z->huff_ac+th, sizes)) return 0; + v = z->huff_ac[th].values; + } + for (i=0; i < n; ++i) + v[i] = stbi__get8(z->s); + if (tc != 0) + stbi__build_fast_ac(z->fast_ac[th], z->huff_ac + th); + L -= n; + } + return L==0; + } + + // check for comment block or APP blocks + if ((m >= 0xE0 && m <= 0xEF) || m == 0xFE) { + L = stbi__get16be(z->s); + if (L < 2) { + if (m == 0xFE) + return stbi__err("bad COM len","Corrupt JPEG"); + else + return stbi__err("bad APP len","Corrupt JPEG"); + } + L -= 2; + + if (m == 0xE0 && L >= 5) { // JFIF APP0 segment + static const unsigned char tag[5] = {'J','F','I','F','\0'}; + int ok = 1; + int i; + for (i=0; i < 5; ++i) + if (stbi__get8(z->s) != tag[i]) + ok = 0; + L -= 5; + if (ok) + z->jfif = 1; + } else if (m == 0xEE && L >= 12) { // Adobe APP14 segment + static const unsigned char tag[6] = {'A','d','o','b','e','\0'}; + int ok = 1; + int i; + for (i=0; i < 6; ++i) + if (stbi__get8(z->s) != tag[i]) + ok = 0; + L -= 6; + if (ok) { + stbi__get8(z->s); // version + stbi__get16be(z->s); // flags0 + stbi__get16be(z->s); // flags1 + z->app14_color_transform = stbi__get8(z->s); // color transform + L -= 6; + } + } + + stbi__skip(z->s, L); + return 1; + } + + return stbi__err("unknown marker","Corrupt JPEG"); +} + +// after we see SOS +static int stbi__process_scan_header(stbi__jpeg *z) +{ + int i; + int Ls = stbi__get16be(z->s); + z->scan_n = stbi__get8(z->s); + if (z->scan_n < 1 || z->scan_n > 4 || z->scan_n > (int) z->s->img_n) return stbi__err("bad SOS component count","Corrupt JPEG"); + if (Ls != 6+2*z->scan_n) return stbi__err("bad SOS len","Corrupt JPEG"); + for (i=0; i < z->scan_n; ++i) { + int id = stbi__get8(z->s), which; + int q = stbi__get8(z->s); + for (which = 0; which < z->s->img_n; ++which) + if (z->img_comp[which].id == id) + break; + if (which == z->s->img_n) return 0; // no match + z->img_comp[which].hd = q >> 4; if (z->img_comp[which].hd > 3) return stbi__err("bad DC huff","Corrupt JPEG"); + z->img_comp[which].ha = q & 15; if (z->img_comp[which].ha > 3) return stbi__err("bad AC huff","Corrupt JPEG"); + z->order[i] = which; + } + + { + int aa; + z->spec_start = stbi__get8(z->s); + z->spec_end = stbi__get8(z->s); // should be 63, but might be 0 + aa = stbi__get8(z->s); + z->succ_high = (aa >> 4); + z->succ_low = (aa & 15); + if (z->progressive) { + if (z->spec_start > 63 || z->spec_end > 63 || z->spec_start > z->spec_end || z->succ_high > 13 || z->succ_low > 13) + return stbi__err("bad SOS", "Corrupt JPEG"); + } else { + if (z->spec_start != 0) return stbi__err("bad SOS","Corrupt JPEG"); + if (z->succ_high != 0 || z->succ_low != 0) return stbi__err("bad SOS","Corrupt JPEG"); + z->spec_end = 63; + } + } + + return 1; +} + +static int stbi__free_jpeg_components(stbi__jpeg *z, int ncomp, int why) +{ + int i; + for (i=0; i < ncomp; ++i) { + if (z->img_comp[i].raw_data) { + STBI_FREE(z->img_comp[i].raw_data); + z->img_comp[i].raw_data = NULL; + z->img_comp[i].data = NULL; + } + if (z->img_comp[i].raw_coeff) { + STBI_FREE(z->img_comp[i].raw_coeff); + z->img_comp[i].raw_coeff = 0; + z->img_comp[i].coeff = 0; + } + if (z->img_comp[i].linebuf) { + STBI_FREE(z->img_comp[i].linebuf); + z->img_comp[i].linebuf = NULL; + } + } + return why; +} + +static int stbi__process_frame_header(stbi__jpeg *z, int scan) +{ + stbi__context *s = z->s; + int Lf,p,i,q, h_max=1,v_max=1,c; + Lf = stbi__get16be(s); if (Lf < 11) return stbi__err("bad SOF len","Corrupt JPEG"); // JPEG + p = stbi__get8(s); if (p != 8) return stbi__err("only 8-bit","JPEG format not supported: 8-bit only"); // JPEG baseline + s->img_y = stbi__get16be(s); if (s->img_y == 0) return stbi__err("no header height", "JPEG format not supported: delayed height"); // Legal, but we don't handle it--but neither does IJG + s->img_x = stbi__get16be(s); if (s->img_x == 0) return stbi__err("0 width","Corrupt JPEG"); // JPEG requires + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + c = stbi__get8(s); + if (c != 3 && c != 1 && c != 4) return stbi__err("bad component count","Corrupt JPEG"); + s->img_n = c; + for (i=0; i < c; ++i) { + z->img_comp[i].data = NULL; + z->img_comp[i].linebuf = NULL; + } + + if (Lf != 8+3*s->img_n) return stbi__err("bad SOF len","Corrupt JPEG"); + + z->rgb = 0; + for (i=0; i < s->img_n; ++i) { + static const unsigned char rgb[3] = { 'R', 'G', 'B' }; + z->img_comp[i].id = stbi__get8(s); + if (s->img_n == 3 && z->img_comp[i].id == rgb[i]) + ++z->rgb; + q = stbi__get8(s); + z->img_comp[i].h = (q >> 4); if (!z->img_comp[i].h || z->img_comp[i].h > 4) return stbi__err("bad H","Corrupt JPEG"); + z->img_comp[i].v = q & 15; if (!z->img_comp[i].v || z->img_comp[i].v > 4) return stbi__err("bad V","Corrupt JPEG"); + z->img_comp[i].tq = stbi__get8(s); if (z->img_comp[i].tq > 3) return stbi__err("bad TQ","Corrupt JPEG"); + } + + if (scan != STBI__SCAN_load) return 1; + + if (!stbi__mad3sizes_valid(s->img_x, s->img_y, s->img_n, 0)) return stbi__err("too large", "Image too large to decode"); + + for (i=0; i < s->img_n; ++i) { + if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h; + if (z->img_comp[i].v > v_max) v_max = z->img_comp[i].v; + } + + // check that plane subsampling factors are integer ratios; our resamplers can't deal with fractional ratios + // and I've never seen a non-corrupted JPEG file actually use them + for (i=0; i < s->img_n; ++i) { + if (h_max % z->img_comp[i].h != 0) return stbi__err("bad H","Corrupt JPEG"); + if (v_max % z->img_comp[i].v != 0) return stbi__err("bad V","Corrupt JPEG"); + } + + // compute interleaved mcu info + z->img_h_max = h_max; + z->img_v_max = v_max; + z->img_mcu_w = h_max * 8; + z->img_mcu_h = v_max * 8; + // these sizes can't be more than 17 bits + z->img_mcu_x = (s->img_x + z->img_mcu_w-1) / z->img_mcu_w; + z->img_mcu_y = (s->img_y + z->img_mcu_h-1) / z->img_mcu_h; + + for (i=0; i < s->img_n; ++i) { + // number of effective pixels (e.g. for non-interleaved MCU) + z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max; + z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max; + // to simplify generation, we'll allocate enough memory to decode + // the bogus oversized data from using interleaved MCUs and their + // big blocks (e.g. a 16x16 iMCU on an image of width 33); we won't + // discard the extra data until colorspace conversion + // + // img_mcu_x, img_mcu_y: <=17 bits; comp[i].h and .v are <=4 (checked earlier) + // so these muls can't overflow with 32-bit ints (which we require) + z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8; + z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8; + z->img_comp[i].coeff = 0; + z->img_comp[i].raw_coeff = 0; + z->img_comp[i].linebuf = NULL; + z->img_comp[i].raw_data = stbi__malloc_mad2(z->img_comp[i].w2, z->img_comp[i].h2, 15); + if (z->img_comp[i].raw_data == NULL) + return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); + // align blocks for idct using mmx/sse + z->img_comp[i].data = (stbi_uc*) (((size_t) z->img_comp[i].raw_data + 15) & ~15); + if (z->progressive) { + // w2, h2 are multiples of 8 (see above) + z->img_comp[i].coeff_w = z->img_comp[i].w2 / 8; + z->img_comp[i].coeff_h = z->img_comp[i].h2 / 8; + z->img_comp[i].raw_coeff = stbi__malloc_mad3(z->img_comp[i].w2, z->img_comp[i].h2, sizeof(short), 15); + if (z->img_comp[i].raw_coeff == NULL) + return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); + z->img_comp[i].coeff = (short*) (((size_t) z->img_comp[i].raw_coeff + 15) & ~15); + } + } + + return 1; +} + +// use comparisons since in some cases we handle more than one case (e.g. SOF) +#define stbi__DNL(x) ((x) == 0xdc) +#define stbi__SOI(x) ((x) == 0xd8) +#define stbi__EOI(x) ((x) == 0xd9) +#define stbi__SOF(x) ((x) == 0xc0 || (x) == 0xc1 || (x) == 0xc2) +#define stbi__SOS(x) ((x) == 0xda) + +#define stbi__SOF_progressive(x) ((x) == 0xc2) + +static int stbi__decode_jpeg_header(stbi__jpeg *z, int scan) +{ + int m; + z->jfif = 0; + z->app14_color_transform = -1; // valid values are 0,1,2 + z->marker = STBI__MARKER_none; // initialize cached marker to empty + m = stbi__get_marker(z); + if (!stbi__SOI(m)) return stbi__err("no SOI","Corrupt JPEG"); + if (scan == STBI__SCAN_type) return 1; + m = stbi__get_marker(z); + while (!stbi__SOF(m)) { + if (!stbi__process_marker(z,m)) return 0; + m = stbi__get_marker(z); + while (m == STBI__MARKER_none) { + // some files have extra padding after their blocks, so ok, we'll scan + if (stbi__at_eof(z->s)) return stbi__err("no SOF", "Corrupt JPEG"); + m = stbi__get_marker(z); + } + } + z->progressive = stbi__SOF_progressive(m); + if (!stbi__process_frame_header(z, scan)) return 0; + return 1; +} + +static stbi_uc stbi__skip_jpeg_junk_at_end(stbi__jpeg *j) +{ + // some JPEGs have junk at end, skip over it but if we find what looks + // like a valid marker, resume there + while (!stbi__at_eof(j->s)) { + stbi_uc x = stbi__get8(j->s); + while (x == 0xff) { // might be a marker + if (stbi__at_eof(j->s)) return STBI__MARKER_none; + x = stbi__get8(j->s); + if (x != 0x00 && x != 0xff) { + // not a stuffed zero or lead-in to another marker, looks + // like an actual marker, return it + return x; + } + // stuffed zero has x=0 now which ends the loop, meaning we go + // back to regular scan loop. + // repeated 0xff keeps trying to read the next byte of the marker. + } + } + return STBI__MARKER_none; +} + +// decode image to YCbCr format +static int stbi__decode_jpeg_image(stbi__jpeg *j) +{ + int m; + for (m = 0; m < 4; m++) { + j->img_comp[m].raw_data = NULL; + j->img_comp[m].raw_coeff = NULL; + } + j->restart_interval = 0; + if (!stbi__decode_jpeg_header(j, STBI__SCAN_load)) return 0; + m = stbi__get_marker(j); + while (!stbi__EOI(m)) { + if (stbi__SOS(m)) { + if (!stbi__process_scan_header(j)) return 0; + if (!stbi__parse_entropy_coded_data(j)) return 0; + if (j->marker == STBI__MARKER_none ) { + j->marker = stbi__skip_jpeg_junk_at_end(j); + // if we reach eof without hitting a marker, stbi__get_marker() below will fail and we'll eventually return 0 + } + m = stbi__get_marker(j); + if (STBI__RESTART(m)) + m = stbi__get_marker(j); + } else if (stbi__DNL(m)) { + int Ld = stbi__get16be(j->s); + stbi__uint32 NL = stbi__get16be(j->s); + if (Ld != 4) return stbi__err("bad DNL len", "Corrupt JPEG"); + if (NL != j->s->img_y) return stbi__err("bad DNL height", "Corrupt JPEG"); + m = stbi__get_marker(j); + } else { + if (!stbi__process_marker(j, m)) return 1; + m = stbi__get_marker(j); + } + } + if (j->progressive) + stbi__jpeg_finish(j); + return 1; +} + +// static jfif-centered resampling (across block boundaries) + +typedef stbi_uc *(*resample_row_func)(stbi_uc *out, stbi_uc *in0, stbi_uc *in1, + int w, int hs); + +#define stbi__div4(x) ((stbi_uc) ((x) >> 2)) + +static stbi_uc *resample_row_1(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + STBI_NOTUSED(out); + STBI_NOTUSED(in_far); + STBI_NOTUSED(w); + STBI_NOTUSED(hs); + return in_near; +} + +static stbi_uc* stbi__resample_row_v_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples vertically for every one in input + int i; + STBI_NOTUSED(hs); + for (i=0; i < w; ++i) + out[i] = stbi__div4(3*in_near[i] + in_far[i] + 2); + return out; +} + +static stbi_uc* stbi__resample_row_h_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples horizontally for every one in input + int i; + stbi_uc *input = in_near; + + if (w == 1) { + // if only one sample, can't do any interpolation + out[0] = out[1] = input[0]; + return out; + } + + out[0] = input[0]; + out[1] = stbi__div4(input[0]*3 + input[1] + 2); + for (i=1; i < w-1; ++i) { + int n = 3*input[i]+2; + out[i*2+0] = stbi__div4(n+input[i-1]); + out[i*2+1] = stbi__div4(n+input[i+1]); + } + out[i*2+0] = stbi__div4(input[w-2]*3 + input[w-1] + 2); + out[i*2+1] = input[w-1]; + + STBI_NOTUSED(in_far); + STBI_NOTUSED(hs); + + return out; +} + +#define stbi__div16(x) ((stbi_uc) ((x) >> 4)) + +static stbi_uc *stbi__resample_row_hv_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate 2x2 samples for every one in input + int i,t0,t1; + if (w == 1) { + out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); + return out; + } + + t1 = 3*in_near[0] + in_far[0]; + out[0] = stbi__div4(t1+2); + for (i=1; i < w; ++i) { + t0 = t1; + t1 = 3*in_near[i]+in_far[i]; + out[i*2-1] = stbi__div16(3*t0 + t1 + 8); + out[i*2 ] = stbi__div16(3*t1 + t0 + 8); + } + out[w*2-1] = stbi__div4(t1+2); + + STBI_NOTUSED(hs); + + return out; +} + +#if defined(STBI_SSE2) || defined(STBI_NEON) +static stbi_uc *stbi__resample_row_hv_2_simd(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate 2x2 samples for every one in input + int i=0,t0,t1; + + if (w == 1) { + out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); + return out; + } + + t1 = 3*in_near[0] + in_far[0]; + // process groups of 8 pixels for as long as we can. + // note we can't handle the last pixel in a row in this loop + // because we need to handle the filter boundary conditions. + for (; i < ((w-1) & ~7); i += 8) { +#if defined(STBI_SSE2) + // load and perform the vertical filtering pass + // this uses 3*x + y = 4*x + (y - x) + __m128i zero = _mm_setzero_si128(); + __m128i farb = _mm_loadl_epi64((__m128i *) (in_far + i)); + __m128i nearb = _mm_loadl_epi64((__m128i *) (in_near + i)); + __m128i farw = _mm_unpacklo_epi8(farb, zero); + __m128i nearw = _mm_unpacklo_epi8(nearb, zero); + __m128i diff = _mm_sub_epi16(farw, nearw); + __m128i nears = _mm_slli_epi16(nearw, 2); + __m128i curr = _mm_add_epi16(nears, diff); // current row + + // horizontal filter works the same based on shifted vers of current + // row. "prev" is current row shifted right by 1 pixel; we need to + // insert the previous pixel value (from t1). + // "next" is current row shifted left by 1 pixel, with first pixel + // of next block of 8 pixels added in. + __m128i prv0 = _mm_slli_si128(curr, 2); + __m128i nxt0 = _mm_srli_si128(curr, 2); + __m128i prev = _mm_insert_epi16(prv0, t1, 0); + __m128i next = _mm_insert_epi16(nxt0, 3*in_near[i+8] + in_far[i+8], 7); + + // horizontal filter, polyphase implementation since it's convenient: + // even pixels = 3*cur + prev = cur*4 + (prev - cur) + // odd pixels = 3*cur + next = cur*4 + (next - cur) + // note the shared term. + __m128i bias = _mm_set1_epi16(8); + __m128i curs = _mm_slli_epi16(curr, 2); + __m128i prvd = _mm_sub_epi16(prev, curr); + __m128i nxtd = _mm_sub_epi16(next, curr); + __m128i curb = _mm_add_epi16(curs, bias); + __m128i even = _mm_add_epi16(prvd, curb); + __m128i odd = _mm_add_epi16(nxtd, curb); + + // interleave even and odd pixels, then undo scaling. + __m128i int0 = _mm_unpacklo_epi16(even, odd); + __m128i int1 = _mm_unpackhi_epi16(even, odd); + __m128i de0 = _mm_srli_epi16(int0, 4); + __m128i de1 = _mm_srli_epi16(int1, 4); + + // pack and write output + __m128i outv = _mm_packus_epi16(de0, de1); + _mm_storeu_si128((__m128i *) (out + i*2), outv); +#elif defined(STBI_NEON) + // load and perform the vertical filtering pass + // this uses 3*x + y = 4*x + (y - x) + uint8x8_t farb = vld1_u8(in_far + i); + uint8x8_t nearb = vld1_u8(in_near + i); + int16x8_t diff = vreinterpretq_s16_u16(vsubl_u8(farb, nearb)); + int16x8_t nears = vreinterpretq_s16_u16(vshll_n_u8(nearb, 2)); + int16x8_t curr = vaddq_s16(nears, diff); // current row + + // horizontal filter works the same based on shifted vers of current + // row. "prev" is current row shifted right by 1 pixel; we need to + // insert the previous pixel value (from t1). + // "next" is current row shifted left by 1 pixel, with first pixel + // of next block of 8 pixels added in. + int16x8_t prv0 = vextq_s16(curr, curr, 7); + int16x8_t nxt0 = vextq_s16(curr, curr, 1); + int16x8_t prev = vsetq_lane_s16(t1, prv0, 0); + int16x8_t next = vsetq_lane_s16(3*in_near[i+8] + in_far[i+8], nxt0, 7); + + // horizontal filter, polyphase implementation since it's convenient: + // even pixels = 3*cur + prev = cur*4 + (prev - cur) + // odd pixels = 3*cur + next = cur*4 + (next - cur) + // note the shared term. + int16x8_t curs = vshlq_n_s16(curr, 2); + int16x8_t prvd = vsubq_s16(prev, curr); + int16x8_t nxtd = vsubq_s16(next, curr); + int16x8_t even = vaddq_s16(curs, prvd); + int16x8_t odd = vaddq_s16(curs, nxtd); + + // undo scaling and round, then store with even/odd phases interleaved + uint8x8x2_t o; + o.val[0] = vqrshrun_n_s16(even, 4); + o.val[1] = vqrshrun_n_s16(odd, 4); + vst2_u8(out + i*2, o); +#endif + + // "previous" value for next iter + t1 = 3*in_near[i+7] + in_far[i+7]; + } + + t0 = t1; + t1 = 3*in_near[i] + in_far[i]; + out[i*2] = stbi__div16(3*t1 + t0 + 8); + + for (++i; i < w; ++i) { + t0 = t1; + t1 = 3*in_near[i]+in_far[i]; + out[i*2-1] = stbi__div16(3*t0 + t1 + 8); + out[i*2 ] = stbi__div16(3*t1 + t0 + 8); + } + out[w*2-1] = stbi__div4(t1+2); + + STBI_NOTUSED(hs); + + return out; +} +#endif + +static stbi_uc *stbi__resample_row_generic(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // resample with nearest-neighbor + int i,j; + STBI_NOTUSED(in_far); + for (i=0; i < w; ++i) + for (j=0; j < hs; ++j) + out[i*hs+j] = in_near[i]; + return out; +} + +// this is a reduced-precision calculation of YCbCr-to-RGB introduced +// to make sure the code produces the same results in both SIMD and scalar +#define stbi__float2fixed(x) (((int) ((x) * 4096.0f + 0.5f)) << 8) +static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step) +{ + int i; + for (i=0; i < count; ++i) { + int y_fixed = (y[i] << 20) + (1<<19); // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr* stbi__float2fixed(1.40200f); + g = y_fixed + (cr*-stbi__float2fixed(0.71414f)) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); + b = y_fixed + cb* stbi__float2fixed(1.77200f); + r >>= 20; + g >>= 20; + b >>= 20; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} + +#if defined(STBI_SSE2) || defined(STBI_NEON) +static void stbi__YCbCr_to_RGB_simd(stbi_uc *out, stbi_uc const *y, stbi_uc const *pcb, stbi_uc const *pcr, int count, int step) +{ + int i = 0; + +#ifdef STBI_SSE2 + // step == 3 is pretty ugly on the final interleave, and i'm not convinced + // it's useful in practice (you wouldn't use it for textures, for example). + // so just accelerate step == 4 case. + if (step == 4) { + // this is a fairly straightforward implementation and not super-optimized. + __m128i signflip = _mm_set1_epi8(-0x80); + __m128i cr_const0 = _mm_set1_epi16( (short) ( 1.40200f*4096.0f+0.5f)); + __m128i cr_const1 = _mm_set1_epi16( - (short) ( 0.71414f*4096.0f+0.5f)); + __m128i cb_const0 = _mm_set1_epi16( - (short) ( 0.34414f*4096.0f+0.5f)); + __m128i cb_const1 = _mm_set1_epi16( (short) ( 1.77200f*4096.0f+0.5f)); + __m128i y_bias = _mm_set1_epi8((char) (unsigned char) 128); + __m128i xw = _mm_set1_epi16(255); // alpha channel + + for (; i+7 < count; i += 8) { + // load + __m128i y_bytes = _mm_loadl_epi64((__m128i *) (y+i)); + __m128i cr_bytes = _mm_loadl_epi64((__m128i *) (pcr+i)); + __m128i cb_bytes = _mm_loadl_epi64((__m128i *) (pcb+i)); + __m128i cr_biased = _mm_xor_si128(cr_bytes, signflip); // -128 + __m128i cb_biased = _mm_xor_si128(cb_bytes, signflip); // -128 + + // unpack to short (and left-shift cr, cb by 8) + __m128i yw = _mm_unpacklo_epi8(y_bias, y_bytes); + __m128i crw = _mm_unpacklo_epi8(_mm_setzero_si128(), cr_biased); + __m128i cbw = _mm_unpacklo_epi8(_mm_setzero_si128(), cb_biased); + + // color transform + __m128i yws = _mm_srli_epi16(yw, 4); + __m128i cr0 = _mm_mulhi_epi16(cr_const0, crw); + __m128i cb0 = _mm_mulhi_epi16(cb_const0, cbw); + __m128i cb1 = _mm_mulhi_epi16(cbw, cb_const1); + __m128i cr1 = _mm_mulhi_epi16(crw, cr_const1); + __m128i rws = _mm_add_epi16(cr0, yws); + __m128i gwt = _mm_add_epi16(cb0, yws); + __m128i bws = _mm_add_epi16(yws, cb1); + __m128i gws = _mm_add_epi16(gwt, cr1); + + // descale + __m128i rw = _mm_srai_epi16(rws, 4); + __m128i bw = _mm_srai_epi16(bws, 4); + __m128i gw = _mm_srai_epi16(gws, 4); + + // back to byte, set up for transpose + __m128i brb = _mm_packus_epi16(rw, bw); + __m128i gxb = _mm_packus_epi16(gw, xw); + + // transpose to interleave channels + __m128i t0 = _mm_unpacklo_epi8(brb, gxb); + __m128i t1 = _mm_unpackhi_epi8(brb, gxb); + __m128i o0 = _mm_unpacklo_epi16(t0, t1); + __m128i o1 = _mm_unpackhi_epi16(t0, t1); + + // store + _mm_storeu_si128((__m128i *) (out + 0), o0); + _mm_storeu_si128((__m128i *) (out + 16), o1); + out += 32; + } + } +#endif + +#ifdef STBI_NEON + // in this version, step=3 support would be easy to add. but is there demand? + if (step == 4) { + // this is a fairly straightforward implementation and not super-optimized. + uint8x8_t signflip = vdup_n_u8(0x80); + int16x8_t cr_const0 = vdupq_n_s16( (short) ( 1.40200f*4096.0f+0.5f)); + int16x8_t cr_const1 = vdupq_n_s16( - (short) ( 0.71414f*4096.0f+0.5f)); + int16x8_t cb_const0 = vdupq_n_s16( - (short) ( 0.34414f*4096.0f+0.5f)); + int16x8_t cb_const1 = vdupq_n_s16( (short) ( 1.77200f*4096.0f+0.5f)); + + for (; i+7 < count; i += 8) { + // load + uint8x8_t y_bytes = vld1_u8(y + i); + uint8x8_t cr_bytes = vld1_u8(pcr + i); + uint8x8_t cb_bytes = vld1_u8(pcb + i); + int8x8_t cr_biased = vreinterpret_s8_u8(vsub_u8(cr_bytes, signflip)); + int8x8_t cb_biased = vreinterpret_s8_u8(vsub_u8(cb_bytes, signflip)); + + // expand to s16 + int16x8_t yws = vreinterpretq_s16_u16(vshll_n_u8(y_bytes, 4)); + int16x8_t crw = vshll_n_s8(cr_biased, 7); + int16x8_t cbw = vshll_n_s8(cb_biased, 7); + + // color transform + int16x8_t cr0 = vqdmulhq_s16(crw, cr_const0); + int16x8_t cb0 = vqdmulhq_s16(cbw, cb_const0); + int16x8_t cr1 = vqdmulhq_s16(crw, cr_const1); + int16x8_t cb1 = vqdmulhq_s16(cbw, cb_const1); + int16x8_t rws = vaddq_s16(yws, cr0); + int16x8_t gws = vaddq_s16(vaddq_s16(yws, cb0), cr1); + int16x8_t bws = vaddq_s16(yws, cb1); + + // undo scaling, round, convert to byte + uint8x8x4_t o; + o.val[0] = vqrshrun_n_s16(rws, 4); + o.val[1] = vqrshrun_n_s16(gws, 4); + o.val[2] = vqrshrun_n_s16(bws, 4); + o.val[3] = vdup_n_u8(255); + + // store, interleaving r/g/b/a + vst4_u8(out, o); + out += 8*4; + } + } +#endif + + for (; i < count; ++i) { + int y_fixed = (y[i] << 20) + (1<<19); // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr* stbi__float2fixed(1.40200f); + g = y_fixed + cr*-stbi__float2fixed(0.71414f) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); + b = y_fixed + cb* stbi__float2fixed(1.77200f); + r >>= 20; + g >>= 20; + b >>= 20; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} +#endif + +// set up the kernels +static void stbi__setup_jpeg(stbi__jpeg *j) +{ + j->idct_block_kernel = stbi__idct_block; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_row; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2; + +#ifdef STBI_SSE2 + if (stbi__sse2_available()) { + j->idct_block_kernel = stbi__idct_simd; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; + } +#endif + +#ifdef STBI_NEON + j->idct_block_kernel = stbi__idct_simd; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; +#endif +} + +// clean up the temporary component buffers +static void stbi__cleanup_jpeg(stbi__jpeg *j) +{ + stbi__free_jpeg_components(j, j->s->img_n, 0); +} + +typedef struct +{ + resample_row_func resample; + stbi_uc *line0,*line1; + int hs,vs; // expansion factor in each axis + int w_lores; // horizontal pixels pre-expansion + int ystep; // how far through vertical expansion we are + int ypos; // which pre-expansion row we're on +} stbi__resample; + +// fast 0..255 * 0..255 => 0..255 rounded multiplication +static stbi_uc stbi__blinn_8x8(stbi_uc x, stbi_uc y) +{ + unsigned int t = x*y + 128; + return (stbi_uc) ((t + (t >>8)) >> 8); +} + +static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp, int req_comp) +{ + int n, decode_n, is_rgb; + z->s->img_n = 0; // make stbi__cleanup_jpeg safe + + // validate req_comp + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + + // load a jpeg image from whichever source, but leave in YCbCr format + if (!stbi__decode_jpeg_image(z)) { stbi__cleanup_jpeg(z); return NULL; } + + // determine actual number of components to generate + n = req_comp ? req_comp : z->s->img_n >= 3 ? 3 : 1; + + is_rgb = z->s->img_n == 3 && (z->rgb == 3 || (z->app14_color_transform == 0 && !z->jfif)); + + if (z->s->img_n == 3 && n < 3 && !is_rgb) + decode_n = 1; + else + decode_n = z->s->img_n; + + // nothing to do if no components requested; check this now to avoid + // accessing uninitialized coutput[0] later + if (decode_n <= 0) { stbi__cleanup_jpeg(z); return NULL; } + + // resample and color-convert + { + int k; + unsigned int i,j; + stbi_uc *output; + stbi_uc *coutput[4] = { NULL, NULL, NULL, NULL }; + + stbi__resample res_comp[4]; + + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + + // allocate line buffer big enough for upsampling off the edges + // with upsample factor of 4 + z->img_comp[k].linebuf = (stbi_uc *) stbi__malloc(z->s->img_x + 3); + if (!z->img_comp[k].linebuf) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + r->hs = z->img_h_max / z->img_comp[k].h; + r->vs = z->img_v_max / z->img_comp[k].v; + r->ystep = r->vs >> 1; + r->w_lores = (z->s->img_x + r->hs-1) / r->hs; + r->ypos = 0; + r->line0 = r->line1 = z->img_comp[k].data; + + if (r->hs == 1 && r->vs == 1) r->resample = resample_row_1; + else if (r->hs == 1 && r->vs == 2) r->resample = stbi__resample_row_v_2; + else if (r->hs == 2 && r->vs == 1) r->resample = stbi__resample_row_h_2; + else if (r->hs == 2 && r->vs == 2) r->resample = z->resample_row_hv_2_kernel; + else r->resample = stbi__resample_row_generic; + } + + // can't error after this so, this is safe + output = (stbi_uc *) stbi__malloc_mad3(n, z->s->img_x, z->s->img_y, 1); + if (!output) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + // now go ahead and resample + for (j=0; j < z->s->img_y; ++j) { + stbi_uc *out = output + n * z->s->img_x * j; + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + int y_bot = r->ystep >= (r->vs >> 1); + coutput[k] = r->resample(z->img_comp[k].linebuf, + y_bot ? r->line1 : r->line0, + y_bot ? r->line0 : r->line1, + r->w_lores, r->hs); + if (++r->ystep >= r->vs) { + r->ystep = 0; + r->line0 = r->line1; + if (++r->ypos < z->img_comp[k].y) + r->line1 += z->img_comp[k].w2; + } + } + if (n >= 3) { + stbi_uc *y = coutput[0]; + if (z->s->img_n == 3) { + if (is_rgb) { + for (i=0; i < z->s->img_x; ++i) { + out[0] = y[i]; + out[1] = coutput[1][i]; + out[2] = coutput[2][i]; + out[3] = 255; + out += n; + } + } else { + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + } + } else if (z->s->img_n == 4) { + if (z->app14_color_transform == 0) { // CMYK + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + out[0] = stbi__blinn_8x8(coutput[0][i], m); + out[1] = stbi__blinn_8x8(coutput[1][i], m); + out[2] = stbi__blinn_8x8(coutput[2][i], m); + out[3] = 255; + out += n; + } + } else if (z->app14_color_transform == 2) { // YCCK + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + out[0] = stbi__blinn_8x8(255 - out[0], m); + out[1] = stbi__blinn_8x8(255 - out[1], m); + out[2] = stbi__blinn_8x8(255 - out[2], m); + out += n; + } + } else { // YCbCr + alpha? Ignore the fourth channel for now + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + } + } else + for (i=0; i < z->s->img_x; ++i) { + out[0] = out[1] = out[2] = y[i]; + out[3] = 255; // not used if n==3 + out += n; + } + } else { + if (is_rgb) { + if (n == 1) + for (i=0; i < z->s->img_x; ++i) + *out++ = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); + else { + for (i=0; i < z->s->img_x; ++i, out += 2) { + out[0] = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); + out[1] = 255; + } + } + } else if (z->s->img_n == 4 && z->app14_color_transform == 0) { + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + stbi_uc r = stbi__blinn_8x8(coutput[0][i], m); + stbi_uc g = stbi__blinn_8x8(coutput[1][i], m); + stbi_uc b = stbi__blinn_8x8(coutput[2][i], m); + out[0] = stbi__compute_y(r, g, b); + out[1] = 255; + out += n; + } + } else if (z->s->img_n == 4 && z->app14_color_transform == 2) { + for (i=0; i < z->s->img_x; ++i) { + out[0] = stbi__blinn_8x8(255 - coutput[0][i], coutput[3][i]); + out[1] = 255; + out += n; + } + } else { + stbi_uc *y = coutput[0]; + if (n == 1) + for (i=0; i < z->s->img_x; ++i) out[i] = y[i]; + else + for (i=0; i < z->s->img_x; ++i) { *out++ = y[i]; *out++ = 255; } + } + } + } + stbi__cleanup_jpeg(z); + *out_x = z->s->img_x; + *out_y = z->s->img_y; + if (comp) *comp = z->s->img_n >= 3 ? 3 : 1; // report original components, not output + return output; + } +} + +static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + unsigned char* result; + stbi__jpeg* j = (stbi__jpeg*) stbi__malloc(sizeof(stbi__jpeg)); + if (!j) return stbi__errpuc("outofmem", "Out of memory"); + memset(j, 0, sizeof(stbi__jpeg)); + STBI_NOTUSED(ri); + j->s = s; + stbi__setup_jpeg(j); + result = load_jpeg_image(j, x,y,comp,req_comp); + STBI_FREE(j); + return result; +} + +static int stbi__jpeg_test(stbi__context *s) +{ + int r; + stbi__jpeg* j = (stbi__jpeg*)stbi__malloc(sizeof(stbi__jpeg)); + if (!j) return stbi__err("outofmem", "Out of memory"); + memset(j, 0, sizeof(stbi__jpeg)); + j->s = s; + stbi__setup_jpeg(j); + r = stbi__decode_jpeg_header(j, STBI__SCAN_type); + stbi__rewind(s); + STBI_FREE(j); + return r; +} + +static int stbi__jpeg_info_raw(stbi__jpeg *j, int *x, int *y, int *comp) +{ + if (!stbi__decode_jpeg_header(j, STBI__SCAN_header)) { + stbi__rewind( j->s ); + return 0; + } + if (x) *x = j->s->img_x; + if (y) *y = j->s->img_y; + if (comp) *comp = j->s->img_n >= 3 ? 3 : 1; + return 1; +} + +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp) +{ + int result; + stbi__jpeg* j = (stbi__jpeg*) (stbi__malloc(sizeof(stbi__jpeg))); + if (!j) return stbi__err("outofmem", "Out of memory"); + memset(j, 0, sizeof(stbi__jpeg)); + j->s = s; + result = stbi__jpeg_info_raw(j, x, y, comp); + STBI_FREE(j); + return result; +} +#endif + +// public domain zlib decode v0.2 Sean Barrett 2006-11-18 +// simple implementation +// - all input must be provided in an upfront buffer +// - all output is written to a single output buffer (can malloc/realloc) +// performance +// - fast huffman + +#ifndef STBI_NO_ZLIB + +// fast-way is faster to check than jpeg huffman, but slow way is slower +#define STBI__ZFAST_BITS 9 // accelerate all cases in default tables +#define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1) +#define STBI__ZNSYMS 288 // number of symbols in literal/length alphabet + +// zlib-style huffman encoding +// (jpegs packs from left, zlib from right, so can't share code) +typedef struct +{ + stbi__uint16 fast[1 << STBI__ZFAST_BITS]; + stbi__uint16 firstcode[16]; + int maxcode[17]; + stbi__uint16 firstsymbol[16]; + stbi_uc size[STBI__ZNSYMS]; + stbi__uint16 value[STBI__ZNSYMS]; +} stbi__zhuffman; + +stbi_inline static int stbi__bitreverse16(int n) +{ + n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1); + n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2); + n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4); + n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8); + return n; +} + +stbi_inline static int stbi__bit_reverse(int v, int bits) +{ + STBI_ASSERT(bits <= 16); + // to bit reverse n bits, reverse 16 and shift + // e.g. 11 bits, bit reverse and shift away 5 + return stbi__bitreverse16(v) >> (16-bits); +} + +static int stbi__zbuild_huffman(stbi__zhuffman *z, const stbi_uc *sizelist, int num) +{ + int i,k=0; + int code, next_code[16], sizes[17]; + + // DEFLATE spec for generating codes + memset(sizes, 0, sizeof(sizes)); + memset(z->fast, 0, sizeof(z->fast)); + for (i=0; i < num; ++i) + ++sizes[sizelist[i]]; + sizes[0] = 0; + for (i=1; i < 16; ++i) + if (sizes[i] > (1 << i)) + return stbi__err("bad sizes", "Corrupt PNG"); + code = 0; + for (i=1; i < 16; ++i) { + next_code[i] = code; + z->firstcode[i] = (stbi__uint16) code; + z->firstsymbol[i] = (stbi__uint16) k; + code = (code + sizes[i]); + if (sizes[i]) + if (code-1 >= (1 << i)) return stbi__err("bad codelengths","Corrupt PNG"); + z->maxcode[i] = code << (16-i); // preshift for inner loop + code <<= 1; + k += sizes[i]; + } + z->maxcode[16] = 0x10000; // sentinel + for (i=0; i < num; ++i) { + int s = sizelist[i]; + if (s) { + int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s]; + stbi__uint16 fastv = (stbi__uint16) ((s << 9) | i); + z->size [c] = (stbi_uc ) s; + z->value[c] = (stbi__uint16) i; + if (s <= STBI__ZFAST_BITS) { + int j = stbi__bit_reverse(next_code[s],s); + while (j < (1 << STBI__ZFAST_BITS)) { + z->fast[j] = fastv; + j += (1 << s); + } + } + ++next_code[s]; + } + } + return 1; +} + +// zlib-from-memory implementation for PNG reading +// because PNG allows splitting the zlib stream arbitrarily, +// and it's annoying structurally to have PNG call ZLIB call PNG, +// we require PNG read all the IDATs and combine them into a single +// memory buffer + +typedef struct +{ + stbi_uc *zbuffer, *zbuffer_end; + int num_bits; + int hit_zeof_once; + stbi__uint32 code_buffer; + + char *zout; + char *zout_start; + char *zout_end; + int z_expandable; + + stbi__zhuffman z_length, z_distance; +} stbi__zbuf; + +stbi_inline static int stbi__zeof(stbi__zbuf *z) +{ + return (z->zbuffer >= z->zbuffer_end); +} + +stbi_inline static stbi_uc stbi__zget8(stbi__zbuf *z) +{ + return stbi__zeof(z) ? 0 : *z->zbuffer++; +} + +static void stbi__fill_bits(stbi__zbuf *z) +{ + do { + if (z->code_buffer >= (1U << z->num_bits)) { + z->zbuffer = z->zbuffer_end; /* treat this as EOF so we fail. */ + return; + } + z->code_buffer |= (unsigned int) stbi__zget8(z) << z->num_bits; + z->num_bits += 8; + } while (z->num_bits <= 24); +} + +stbi_inline static unsigned int stbi__zreceive(stbi__zbuf *z, int n) +{ + unsigned int k; + if (z->num_bits < n) stbi__fill_bits(z); + k = z->code_buffer & ((1 << n) - 1); + z->code_buffer >>= n; + z->num_bits -= n; + return k; +} + +static int stbi__zhuffman_decode_slowpath(stbi__zbuf *a, stbi__zhuffman *z) +{ + int b,s,k; + // not resolved by fast table, so compute it the slow way + // use jpeg approach, which requires MSbits at top + k = stbi__bit_reverse(a->code_buffer, 16); + for (s=STBI__ZFAST_BITS+1; ; ++s) + if (k < z->maxcode[s]) + break; + if (s >= 16) return -1; // invalid code! + // code size is s, so: + b = (k >> (16-s)) - z->firstcode[s] + z->firstsymbol[s]; + if (b >= STBI__ZNSYMS) return -1; // some data was corrupt somewhere! + if (z->size[b] != s) return -1; // was originally an assert, but report failure instead. + a->code_buffer >>= s; + a->num_bits -= s; + return z->value[b]; +} + +stbi_inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z) +{ + int b,s; + if (a->num_bits < 16) { + if (stbi__zeof(a)) { + if (!a->hit_zeof_once) { + // This is the first time we hit eof, insert 16 extra padding btis + // to allow us to keep going; if we actually consume any of them + // though, that is invalid data. This is caught later. + a->hit_zeof_once = 1; + a->num_bits += 16; // add 16 implicit zero bits + } else { + // We already inserted our extra 16 padding bits and are again + // out, this stream is actually prematurely terminated. + return -1; + } + } else { + stbi__fill_bits(a); + } + } + b = z->fast[a->code_buffer & STBI__ZFAST_MASK]; + if (b) { + s = b >> 9; + a->code_buffer >>= s; + a->num_bits -= s; + return b & 511; + } + return stbi__zhuffman_decode_slowpath(a, z); +} + +static int stbi__zexpand(stbi__zbuf *z, char *zout, int n) // need to make room for n bytes +{ + char *q; + unsigned int cur, limit, old_limit; + z->zout = zout; + if (!z->z_expandable) return stbi__err("output buffer limit","Corrupt PNG"); + cur = (unsigned int) (z->zout - z->zout_start); + limit = old_limit = (unsigned) (z->zout_end - z->zout_start); + if (UINT_MAX - cur < (unsigned) n) return stbi__err("outofmem", "Out of memory"); + while (cur + n > limit) { + if(limit > UINT_MAX / 2) return stbi__err("outofmem", "Out of memory"); + limit *= 2; + } + q = (char *) STBI_REALLOC_SIZED(z->zout_start, old_limit, limit); + STBI_NOTUSED(old_limit); + if (q == NULL) return stbi__err("outofmem", "Out of memory"); + z->zout_start = q; + z->zout = q + cur; + z->zout_end = q + limit; + return 1; +} + +static const int stbi__zlength_base[31] = { + 3,4,5,6,7,8,9,10,11,13, + 15,17,19,23,27,31,35,43,51,59, + 67,83,99,115,131,163,195,227,258,0,0 }; + +static const int stbi__zlength_extra[31]= +{ 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 }; + +static const int stbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, +257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0}; + +static const int stbi__zdist_extra[32] = +{ 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; + +static int stbi__parse_huffman_block(stbi__zbuf *a) +{ + char *zout = a->zout; + for(;;) { + int z = stbi__zhuffman_decode(a, &a->z_length); + if (z < 256) { + if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); // error in huffman codes + if (zout >= a->zout_end) { + if (!stbi__zexpand(a, zout, 1)) return 0; + zout = a->zout; + } + *zout++ = (char) z; + } else { + stbi_uc *p; + int len,dist; + if (z == 256) { + a->zout = zout; + if (a->hit_zeof_once && a->num_bits < 16) { + // The first time we hit zeof, we inserted 16 extra zero bits into our bit + // buffer so the decoder can just do its speculative decoding. But if we + // actually consumed any of those bits (which is the case when num_bits < 16), + // the stream actually read past the end so it is malformed. + return stbi__err("unexpected end","Corrupt PNG"); + } + return 1; + } + if (z >= 286) return stbi__err("bad huffman code","Corrupt PNG"); // per DEFLATE, length codes 286 and 287 must not appear in compressed data + z -= 257; + len = stbi__zlength_base[z]; + if (stbi__zlength_extra[z]) len += stbi__zreceive(a, stbi__zlength_extra[z]); + z = stbi__zhuffman_decode(a, &a->z_distance); + if (z < 0 || z >= 30) return stbi__err("bad huffman code","Corrupt PNG"); // per DEFLATE, distance codes 30 and 31 must not appear in compressed data + dist = stbi__zdist_base[z]; + if (stbi__zdist_extra[z]) dist += stbi__zreceive(a, stbi__zdist_extra[z]); + if (zout - a->zout_start < dist) return stbi__err("bad dist","Corrupt PNG"); + if (len > a->zout_end - zout) { + if (!stbi__zexpand(a, zout, len)) return 0; + zout = a->zout; + } + p = (stbi_uc *) (zout - dist); + if (dist == 1) { // run of one byte; common in images. + stbi_uc v = *p; + if (len) { do *zout++ = v; while (--len); } + } else { + if (len) { do *zout++ = *p++; while (--len); } + } + } + } +} + +static int stbi__compute_huffman_codes(stbi__zbuf *a) +{ + static const stbi_uc length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 }; + stbi__zhuffman z_codelength; + stbi_uc lencodes[286+32+137];//padding for maximum single op + stbi_uc codelength_sizes[19]; + int i,n; + + int hlit = stbi__zreceive(a,5) + 257; + int hdist = stbi__zreceive(a,5) + 1; + int hclen = stbi__zreceive(a,4) + 4; + int ntot = hlit + hdist; + + memset(codelength_sizes, 0, sizeof(codelength_sizes)); + for (i=0; i < hclen; ++i) { + int s = stbi__zreceive(a,3); + codelength_sizes[length_dezigzag[i]] = (stbi_uc) s; + } + if (!stbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; + + n = 0; + while (n < ntot) { + int c = stbi__zhuffman_decode(a, &z_codelength); + if (c < 0 || c >= 19) return stbi__err("bad codelengths", "Corrupt PNG"); + if (c < 16) + lencodes[n++] = (stbi_uc) c; + else { + stbi_uc fill = 0; + if (c == 16) { + c = stbi__zreceive(a,2)+3; + if (n == 0) return stbi__err("bad codelengths", "Corrupt PNG"); + fill = lencodes[n-1]; + } else if (c == 17) { + c = stbi__zreceive(a,3)+3; + } else if (c == 18) { + c = stbi__zreceive(a,7)+11; + } else { + return stbi__err("bad codelengths", "Corrupt PNG"); + } + if (ntot - n < c) return stbi__err("bad codelengths", "Corrupt PNG"); + memset(lencodes+n, fill, c); + n += c; + } + } + if (n != ntot) return stbi__err("bad codelengths","Corrupt PNG"); + if (!stbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0; + return 1; +} + +static int stbi__parse_uncompressed_block(stbi__zbuf *a) +{ + stbi_uc header[4]; + int len,nlen,k; + if (a->num_bits & 7) + stbi__zreceive(a, a->num_bits & 7); // discard + // drain the bit-packed data into header + k = 0; + while (a->num_bits > 0) { + header[k++] = (stbi_uc) (a->code_buffer & 255); // suppress MSVC run-time check + a->code_buffer >>= 8; + a->num_bits -= 8; + } + if (a->num_bits < 0) return stbi__err("zlib corrupt","Corrupt PNG"); + // now fill header the normal way + while (k < 4) + header[k++] = stbi__zget8(a); + len = header[1] * 256 + header[0]; + nlen = header[3] * 256 + header[2]; + if (nlen != (len ^ 0xffff)) return stbi__err("zlib corrupt","Corrupt PNG"); + if (a->zbuffer + len > a->zbuffer_end) return stbi__err("read past buffer","Corrupt PNG"); + if (a->zout + len > a->zout_end) + if (!stbi__zexpand(a, a->zout, len)) return 0; + memcpy(a->zout, a->zbuffer, len); + a->zbuffer += len; + a->zout += len; + return 1; +} + +static int stbi__parse_zlib_header(stbi__zbuf *a) +{ + int cmf = stbi__zget8(a); + int cm = cmf & 15; + /* int cinfo = cmf >> 4; */ + int flg = stbi__zget8(a); + if (stbi__zeof(a)) return stbi__err("bad zlib header","Corrupt PNG"); // zlib spec + if ((cmf*256+flg) % 31 != 0) return stbi__err("bad zlib header","Corrupt PNG"); // zlib spec + if (flg & 32) return stbi__err("no preset dict","Corrupt PNG"); // preset dictionary not allowed in png + if (cm != 8) return stbi__err("bad compression","Corrupt PNG"); // DEFLATE required for png + // window = 1 << (8 + cinfo)... but who cares, we fully buffer output + return 1; +} + +static const stbi_uc stbi__zdefault_length[STBI__ZNSYMS] = +{ + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8 +}; +static const stbi_uc stbi__zdefault_distance[32] = +{ + 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5 +}; +/* +Init algorithm: +{ + int i; // use <= to match clearly with spec + for (i=0; i <= 143; ++i) stbi__zdefault_length[i] = 8; + for ( ; i <= 255; ++i) stbi__zdefault_length[i] = 9; + for ( ; i <= 279; ++i) stbi__zdefault_length[i] = 7; + for ( ; i <= 287; ++i) stbi__zdefault_length[i] = 8; + + for (i=0; i <= 31; ++i) stbi__zdefault_distance[i] = 5; +} +*/ + +static int stbi__parse_zlib(stbi__zbuf *a, int parse_header) +{ + int final, type; + if (parse_header) + if (!stbi__parse_zlib_header(a)) return 0; + a->num_bits = 0; + a->code_buffer = 0; + a->hit_zeof_once = 0; + do { + final = stbi__zreceive(a,1); + type = stbi__zreceive(a,2); + if (type == 0) { + if (!stbi__parse_uncompressed_block(a)) return 0; + } else if (type == 3) { + return 0; + } else { + if (type == 1) { + // use fixed code lengths + if (!stbi__zbuild_huffman(&a->z_length , stbi__zdefault_length , STBI__ZNSYMS)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, stbi__zdefault_distance, 32)) return 0; + } else { + if (!stbi__compute_huffman_codes(a)) return 0; + } + if (!stbi__parse_huffman_block(a)) return 0; + } + } while (!final); + return 1; +} + +static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) +{ + a->zout_start = obuf; + a->zout = obuf; + a->zout_end = obuf + olen; + a->z_expandable = exp; + + return stbi__parse_zlib(a, parse_header); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, 1)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF char *stbi_zlib_decode_malloc(char const *buffer, int len, int *outlen) +{ + return stbi_zlib_decode_malloc_guesssize(buffer, len, 16384, outlen); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, parse_header)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, char const *ibuffer, int ilen) +{ + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 1)) + return (int) (a.zout - a.zout_start); + else + return -1; +} + +STBIDEF char *stbi_zlib_decode_noheader_malloc(char const *buffer, int len, int *outlen) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(16384); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer+len; + if (stbi__do_zlib(&a, p, 16384, 1, 0)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen) +{ + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 0)) + return (int) (a.zout - a.zout_start); + else + return -1; +} +#endif + +// public domain "baseline" PNG decoder v0.10 Sean Barrett 2006-11-18 +// simple implementation +// - only 8-bit samples +// - no CRC checking +// - allocates lots of intermediate memory +// - avoids problem of streaming data between subsystems +// - avoids explicit window management +// performance +// - uses stb_zlib, a PD zlib implementation with fast huffman decoding + +#ifndef STBI_NO_PNG +typedef struct +{ + stbi__uint32 length; + stbi__uint32 type; +} stbi__pngchunk; + +static stbi__pngchunk stbi__get_chunk_header(stbi__context *s) +{ + stbi__pngchunk c; + c.length = stbi__get32be(s); + c.type = stbi__get32be(s); + return c; +} + +static int stbi__check_png_header(stbi__context *s) +{ + static const stbi_uc png_sig[8] = { 137,80,78,71,13,10,26,10 }; + int i; + for (i=0; i < 8; ++i) + if (stbi__get8(s) != png_sig[i]) return stbi__err("bad png sig","Not a PNG"); + return 1; +} + +typedef struct +{ + stbi__context *s; + stbi_uc *idata, *expanded, *out; + int depth; +} stbi__png; + + +enum { + STBI__F_none=0, + STBI__F_sub=1, + STBI__F_up=2, + STBI__F_avg=3, + STBI__F_paeth=4, + // synthetic filter used for first scanline to avoid needing a dummy row of 0s + STBI__F_avg_first +}; + +static stbi_uc first_row_filter[5] = +{ + STBI__F_none, + STBI__F_sub, + STBI__F_none, + STBI__F_avg_first, + STBI__F_sub // Paeth with b=c=0 turns out to be equivalent to sub +}; + +static int stbi__paeth(int a, int b, int c) +{ + // This formulation looks very different from the reference in the PNG spec, but is + // actually equivalent and has favorable data dependencies and admits straightforward + // generation of branch-free code, which helps performance significantly. + int thresh = c*3 - (a + b); + int lo = a < b ? a : b; + int hi = a < b ? b : a; + int t0 = (hi <= thresh) ? lo : c; + int t1 = (thresh <= lo) ? hi : t0; + return t1; +} + +static const stbi_uc stbi__depth_scale_table[9] = { 0, 0xff, 0x55, 0, 0x11, 0,0,0, 0x01 }; + +// adds an extra all-255 alpha channel +// dest == src is legal +// img_n must be 1 or 3 +static void stbi__create_png_alpha_expand8(stbi_uc *dest, stbi_uc *src, stbi__uint32 x, int img_n) +{ + int i; + // must process data backwards since we allow dest==src + if (img_n == 1) { + for (i=x-1; i >= 0; --i) { + dest[i*2+1] = 255; + dest[i*2+0] = src[i]; + } + } else { + STBI_ASSERT(img_n == 3); + for (i=x-1; i >= 0; --i) { + dest[i*4+3] = 255; + dest[i*4+2] = src[i*3+2]; + dest[i*4+1] = src[i*3+1]; + dest[i*4+0] = src[i*3+0]; + } + } +} + +// create the png data from post-deflated data +static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, stbi__uint32 x, stbi__uint32 y, int depth, int color) +{ + int bytes = (depth == 16 ? 2 : 1); + stbi__context *s = a->s; + stbi__uint32 i,j,stride = x*out_n*bytes; + stbi__uint32 img_len, img_width_bytes; + stbi_uc *filter_buf; + int all_ok = 1; + int k; + int img_n = s->img_n; // copy it into a local for later + + int output_bytes = out_n*bytes; + int filter_bytes = img_n*bytes; + int width = x; + + STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1); + a->out = (stbi_uc *) stbi__malloc_mad3(x, y, output_bytes, 0); // extra bytes to write off the end into + if (!a->out) return stbi__err("outofmem", "Out of memory"); + + // note: error exits here don't need to clean up a->out individually, + // stbi__do_png always does on error. + if (!stbi__mad3sizes_valid(img_n, x, depth, 7)) return stbi__err("too large", "Corrupt PNG"); + img_width_bytes = (((img_n * x * depth) + 7) >> 3); + if (!stbi__mad2sizes_valid(img_width_bytes, y, img_width_bytes)) return stbi__err("too large", "Corrupt PNG"); + img_len = (img_width_bytes + 1) * y; + + // we used to check for exact match between raw_len and img_len on non-interlaced PNGs, + // but issue #276 reported a PNG in the wild that had extra data at the end (all zeros), + // so just check for raw_len < img_len always. + if (raw_len < img_len) return stbi__err("not enough pixels","Corrupt PNG"); + + // Allocate two scan lines worth of filter workspace buffer. + filter_buf = (stbi_uc *) stbi__malloc_mad2(img_width_bytes, 2, 0); + if (!filter_buf) return stbi__err("outofmem", "Out of memory"); + + // Filtering for low-bit-depth images + if (depth < 8) { + filter_bytes = 1; + width = img_width_bytes; + } + + for (j=0; j < y; ++j) { + // cur/prior filter buffers alternate + stbi_uc *cur = filter_buf + (j & 1)*img_width_bytes; + stbi_uc *prior = filter_buf + (~j & 1)*img_width_bytes; + stbi_uc *dest = a->out + stride*j; + int nk = width * filter_bytes; + int filter = *raw++; + + // check filter type + if (filter > 4) { + all_ok = stbi__err("invalid filter","Corrupt PNG"); + break; + } + + // if first row, use special filter that doesn't sample previous row + if (j == 0) filter = first_row_filter[filter]; + + // perform actual filtering + switch (filter) { + case STBI__F_none: + memcpy(cur, raw, nk); + break; + case STBI__F_sub: + memcpy(cur, raw, filter_bytes); + for (k = filter_bytes; k < nk; ++k) + cur[k] = STBI__BYTECAST(raw[k] + cur[k-filter_bytes]); + break; + case STBI__F_up: + for (k = 0; k < nk; ++k) + cur[k] = STBI__BYTECAST(raw[k] + prior[k]); + break; + case STBI__F_avg: + for (k = 0; k < filter_bytes; ++k) + cur[k] = STBI__BYTECAST(raw[k] + (prior[k]>>1)); + for (k = filter_bytes; k < nk; ++k) + cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-filter_bytes])>>1)); + break; + case STBI__F_paeth: + for (k = 0; k < filter_bytes; ++k) + cur[k] = STBI__BYTECAST(raw[k] + prior[k]); // prior[k] == stbi__paeth(0,prior[k],0) + for (k = filter_bytes; k < nk; ++k) + cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes], prior[k], prior[k-filter_bytes])); + break; + case STBI__F_avg_first: + memcpy(cur, raw, filter_bytes); + for (k = filter_bytes; k < nk; ++k) + cur[k] = STBI__BYTECAST(raw[k] + (cur[k-filter_bytes] >> 1)); + break; + } + + raw += nk; + + // expand decoded bits in cur to dest, also adding an extra alpha channel if desired + if (depth < 8) { + stbi_uc scale = (color == 0) ? stbi__depth_scale_table[depth] : 1; // scale grayscale values to 0..255 range + stbi_uc *in = cur; + stbi_uc *out = dest; + stbi_uc inb = 0; + stbi__uint32 nsmp = x*img_n; + + // expand bits to bytes first + if (depth == 4) { + for (i=0; i < nsmp; ++i) { + if ((i & 1) == 0) inb = *in++; + *out++ = scale * (inb >> 4); + inb <<= 4; + } + } else if (depth == 2) { + for (i=0; i < nsmp; ++i) { + if ((i & 3) == 0) inb = *in++; + *out++ = scale * (inb >> 6); + inb <<= 2; + } + } else { + STBI_ASSERT(depth == 1); + for (i=0; i < nsmp; ++i) { + if ((i & 7) == 0) inb = *in++; + *out++ = scale * (inb >> 7); + inb <<= 1; + } + } + + // insert alpha=255 values if desired + if (img_n != out_n) + stbi__create_png_alpha_expand8(dest, dest, x, img_n); + } else if (depth == 8) { + if (img_n == out_n) + memcpy(dest, cur, x*img_n); + else + stbi__create_png_alpha_expand8(dest, cur, x, img_n); + } else if (depth == 16) { + // convert the image data from big-endian to platform-native + stbi__uint16 *dest16 = (stbi__uint16*)dest; + stbi__uint32 nsmp = x*img_n; + + if (img_n == out_n) { + for (i = 0; i < nsmp; ++i, ++dest16, cur += 2) + *dest16 = (cur[0] << 8) | cur[1]; + } else { + STBI_ASSERT(img_n+1 == out_n); + if (img_n == 1) { + for (i = 0; i < x; ++i, dest16 += 2, cur += 2) { + dest16[0] = (cur[0] << 8) | cur[1]; + dest16[1] = 0xffff; + } + } else { + STBI_ASSERT(img_n == 3); + for (i = 0; i < x; ++i, dest16 += 4, cur += 6) { + dest16[0] = (cur[0] << 8) | cur[1]; + dest16[1] = (cur[2] << 8) | cur[3]; + dest16[2] = (cur[4] << 8) | cur[5]; + dest16[3] = 0xffff; + } + } + } + } + } + + STBI_FREE(filter_buf); + if (!all_ok) return 0; + + return 1; +} + +static int stbi__create_png_image(stbi__png *a, stbi_uc *image_data, stbi__uint32 image_data_len, int out_n, int depth, int color, int interlaced) +{ + int bytes = (depth == 16 ? 2 : 1); + int out_bytes = out_n * bytes; + stbi_uc *final; + int p; + if (!interlaced) + return stbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color); + + // de-interlacing + final = (stbi_uc *) stbi__malloc_mad3(a->s->img_x, a->s->img_y, out_bytes, 0); + if (!final) return stbi__err("outofmem", "Out of memory"); + for (p=0; p < 7; ++p) { + int xorig[] = { 0,4,0,2,0,1,0 }; + int yorig[] = { 0,0,4,0,2,0,1 }; + int xspc[] = { 8,8,4,4,2,2,1 }; + int yspc[] = { 8,8,8,4,4,2,2 }; + int i,j,x,y; + // pass1_x[4] = 0, pass1_x[5] = 1, pass1_x[12] = 1 + x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p]; + y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p]; + if (x && y) { + stbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y; + if (!stbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) { + STBI_FREE(final); + return 0; + } + for (j=0; j < y; ++j) { + for (i=0; i < x; ++i) { + int out_y = j*yspc[p]+yorig[p]; + int out_x = i*xspc[p]+xorig[p]; + memcpy(final + out_y*a->s->img_x*out_bytes + out_x*out_bytes, + a->out + (j*x+i)*out_bytes, out_bytes); + } + } + STBI_FREE(a->out); + image_data += img_len; + image_data_len -= img_len; + } + } + a->out = final; + + return 1; +} + +static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + // compute color-based transparency, assuming we've + // already got 255 as the alpha value in the output + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i=0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 255); + p += 2; + } + } else { + for (i=0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int stbi__compute_transparency16(stbi__png *z, stbi__uint16 tc[3], int out_n) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi__uint16 *p = (stbi__uint16*) z->out; + + // compute color-based transparency, assuming we've + // already got 65535 as the alpha value in the output + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i = 0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 65535); + p += 2; + } + } else { + for (i = 0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int pal_img_n) +{ + stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; + stbi_uc *p, *temp_out, *orig = a->out; + + p = (stbi_uc *) stbi__malloc_mad2(pixel_count, pal_img_n, 0); + if (p == NULL) return stbi__err("outofmem", "Out of memory"); + + // between here and free(out) below, exitting would leak + temp_out = p; + + if (pal_img_n == 3) { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p += 3; + } + } else { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p[3] = palette[n+3]; + p += 4; + } + } + STBI_FREE(a->out); + a->out = temp_out; + + STBI_NOTUSED(len); + + return 1; +} + +static int stbi__unpremultiply_on_load_global = 0; +static int stbi__de_iphone_flag_global = 0; + +STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply) +{ + stbi__unpremultiply_on_load_global = flag_true_if_should_unpremultiply; +} + +STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert) +{ + stbi__de_iphone_flag_global = flag_true_if_should_convert; +} + +#ifndef STBI_THREAD_LOCAL +#define stbi__unpremultiply_on_load stbi__unpremultiply_on_load_global +#define stbi__de_iphone_flag stbi__de_iphone_flag_global +#else +static STBI_THREAD_LOCAL int stbi__unpremultiply_on_load_local, stbi__unpremultiply_on_load_set; +static STBI_THREAD_LOCAL int stbi__de_iphone_flag_local, stbi__de_iphone_flag_set; + +STBIDEF void stbi_set_unpremultiply_on_load_thread(int flag_true_if_should_unpremultiply) +{ + stbi__unpremultiply_on_load_local = flag_true_if_should_unpremultiply; + stbi__unpremultiply_on_load_set = 1; +} + +STBIDEF void stbi_convert_iphone_png_to_rgb_thread(int flag_true_if_should_convert) +{ + stbi__de_iphone_flag_local = flag_true_if_should_convert; + stbi__de_iphone_flag_set = 1; +} + +#define stbi__unpremultiply_on_load (stbi__unpremultiply_on_load_set \ + ? stbi__unpremultiply_on_load_local \ + : stbi__unpremultiply_on_load_global) +#define stbi__de_iphone_flag (stbi__de_iphone_flag_set \ + ? stbi__de_iphone_flag_local \ + : stbi__de_iphone_flag_global) +#endif // STBI_THREAD_LOCAL + +static void stbi__de_iphone(stbi__png *z) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + if (s->img_out_n == 3) { // convert bgr to rgb + for (i=0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 3; + } + } else { + STBI_ASSERT(s->img_out_n == 4); + if (stbi__unpremultiply_on_load) { + // convert bgr to rgb and unpremultiply + for (i=0; i < pixel_count; ++i) { + stbi_uc a = p[3]; + stbi_uc t = p[0]; + if (a) { + stbi_uc half = a / 2; + p[0] = (p[2] * 255 + half) / a; + p[1] = (p[1] * 255 + half) / a; + p[2] = ( t * 255 + half) / a; + } else { + p[0] = p[2]; + p[2] = t; + } + p += 4; + } + } else { + // convert bgr to rgb + for (i=0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 4; + } + } + } +} + +#define STBI__PNG_TYPE(a,b,c,d) (((unsigned) (a) << 24) + ((unsigned) (b) << 16) + ((unsigned) (c) << 8) + (unsigned) (d)) + +static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp) +{ + stbi_uc palette[1024], pal_img_n=0; + stbi_uc has_trans=0, tc[3]={0}; + stbi__uint16 tc16[3]; + stbi__uint32 ioff=0, idata_limit=0, i, pal_len=0; + int first=1,k,interlace=0, color=0, is_iphone=0; + stbi__context *s = z->s; + + z->expanded = NULL; + z->idata = NULL; + z->out = NULL; + + if (!stbi__check_png_header(s)) return 0; + + if (scan == STBI__SCAN_type) return 1; + + for (;;) { + stbi__pngchunk c = stbi__get_chunk_header(s); + switch (c.type) { + case STBI__PNG_TYPE('C','g','B','I'): + is_iphone = 1; + stbi__skip(s, c.length); + break; + case STBI__PNG_TYPE('I','H','D','R'): { + int comp,filter; + if (!first) return stbi__err("multiple IHDR","Corrupt PNG"); + first = 0; + if (c.length != 13) return stbi__err("bad IHDR len","Corrupt PNG"); + s->img_x = stbi__get32be(s); + s->img_y = stbi__get32be(s); + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + z->depth = stbi__get8(s); if (z->depth != 1 && z->depth != 2 && z->depth != 4 && z->depth != 8 && z->depth != 16) return stbi__err("1/2/4/8/16-bit only","PNG not supported: 1/2/4/8/16-bit only"); + color = stbi__get8(s); if (color > 6) return stbi__err("bad ctype","Corrupt PNG"); + if (color == 3 && z->depth == 16) return stbi__err("bad ctype","Corrupt PNG"); + if (color == 3) pal_img_n = 3; else if (color & 1) return stbi__err("bad ctype","Corrupt PNG"); + comp = stbi__get8(s); if (comp) return stbi__err("bad comp method","Corrupt PNG"); + filter= stbi__get8(s); if (filter) return stbi__err("bad filter method","Corrupt PNG"); + interlace = stbi__get8(s); if (interlace>1) return stbi__err("bad interlace method","Corrupt PNG"); + if (!s->img_x || !s->img_y) return stbi__err("0-pixel image","Corrupt PNG"); + if (!pal_img_n) { + s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0); + if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); + } else { + // if paletted, then pal_n is our final components, and + // img_n is # components to decompress/filter. + s->img_n = 1; + if ((1 << 30) / s->img_x / 4 < s->img_y) return stbi__err("too large","Corrupt PNG"); + } + // even with SCAN_header, have to scan to see if we have a tRNS + break; + } + + case STBI__PNG_TYPE('P','L','T','E'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (c.length > 256*3) return stbi__err("invalid PLTE","Corrupt PNG"); + pal_len = c.length / 3; + if (pal_len * 3 != c.length) return stbi__err("invalid PLTE","Corrupt PNG"); + for (i=0; i < pal_len; ++i) { + palette[i*4+0] = stbi__get8(s); + palette[i*4+1] = stbi__get8(s); + palette[i*4+2] = stbi__get8(s); + palette[i*4+3] = 255; + } + break; + } + + case STBI__PNG_TYPE('t','R','N','S'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (z->idata) return stbi__err("tRNS after IDAT","Corrupt PNG"); + if (pal_img_n) { + if (scan == STBI__SCAN_header) { s->img_n = 4; return 1; } + if (pal_len == 0) return stbi__err("tRNS before PLTE","Corrupt PNG"); + if (c.length > pal_len) return stbi__err("bad tRNS len","Corrupt PNG"); + pal_img_n = 4; + for (i=0; i < c.length; ++i) + palette[i*4+3] = stbi__get8(s); + } else { + if (!(s->img_n & 1)) return stbi__err("tRNS with alpha","Corrupt PNG"); + if (c.length != (stbi__uint32) s->img_n*2) return stbi__err("bad tRNS len","Corrupt PNG"); + has_trans = 1; + // non-paletted with tRNS = constant alpha. if header-scanning, we can stop now. + if (scan == STBI__SCAN_header) { ++s->img_n; return 1; } + if (z->depth == 16) { + for (k = 0; k < s->img_n && k < 3; ++k) // extra loop test to suppress false GCC warning + tc16[k] = (stbi__uint16)stbi__get16be(s); // copy the values as-is + } else { + for (k = 0; k < s->img_n && k < 3; ++k) + tc[k] = (stbi_uc)(stbi__get16be(s) & 255) * stbi__depth_scale_table[z->depth]; // non 8-bit images will be larger + } + } + break; + } + + case STBI__PNG_TYPE('I','D','A','T'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (pal_img_n && !pal_len) return stbi__err("no PLTE","Corrupt PNG"); + if (scan == STBI__SCAN_header) { + // header scan definitely stops at first IDAT + if (pal_img_n) + s->img_n = pal_img_n; + return 1; + } + if (c.length > (1u << 30)) return stbi__err("IDAT size limit", "IDAT section larger than 2^30 bytes"); + if ((int)(ioff + c.length) < (int)ioff) return 0; + if (ioff + c.length > idata_limit) { + stbi__uint32 idata_limit_old = idata_limit; + stbi_uc *p; + if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096; + while (ioff + c.length > idata_limit) + idata_limit *= 2; + STBI_NOTUSED(idata_limit_old); + p = (stbi_uc *) STBI_REALLOC_SIZED(z->idata, idata_limit_old, idata_limit); if (p == NULL) return stbi__err("outofmem", "Out of memory"); + z->idata = p; + } + if (!stbi__getn(s, z->idata+ioff,c.length)) return stbi__err("outofdata","Corrupt PNG"); + ioff += c.length; + break; + } + + case STBI__PNG_TYPE('I','E','N','D'): { + stbi__uint32 raw_len, bpl; + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (scan != STBI__SCAN_load) return 1; + if (z->idata == NULL) return stbi__err("no IDAT","Corrupt PNG"); + // initial guess for decoded data size to avoid unnecessary reallocs + bpl = (s->img_x * z->depth + 7) / 8; // bytes per line, per component + raw_len = bpl * s->img_y * s->img_n /* pixels */ + s->img_y /* filter mode per row */; + z->expanded = (stbi_uc *) stbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, (int *) &raw_len, !is_iphone); + if (z->expanded == NULL) return 0; // zlib should set error + STBI_FREE(z->idata); z->idata = NULL; + if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans) + s->img_out_n = s->img_n+1; + else + s->img_out_n = s->img_n; + if (!stbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, z->depth, color, interlace)) return 0; + if (has_trans) { + if (z->depth == 16) { + if (!stbi__compute_transparency16(z, tc16, s->img_out_n)) return 0; + } else { + if (!stbi__compute_transparency(z, tc, s->img_out_n)) return 0; + } + } + if (is_iphone && stbi__de_iphone_flag && s->img_out_n > 2) + stbi__de_iphone(z); + if (pal_img_n) { + // pal_img_n == 3 or 4 + s->img_n = pal_img_n; // record the actual colors we had + s->img_out_n = pal_img_n; + if (req_comp >= 3) s->img_out_n = req_comp; + if (!stbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) + return 0; + } else if (has_trans) { + // non-paletted image with tRNS -> source image has (constant) alpha + ++s->img_n; + } + STBI_FREE(z->expanded); z->expanded = NULL; + // end of PNG chunk, read and skip CRC + stbi__get32be(s); + return 1; + } + + default: + // if critical, fail + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if ((c.type & (1 << 29)) == 0) { + #ifndef STBI_NO_FAILURE_STRINGS + // not threadsafe + static char invalid_chunk[] = "XXXX PNG chunk not known"; + invalid_chunk[0] = STBI__BYTECAST(c.type >> 24); + invalid_chunk[1] = STBI__BYTECAST(c.type >> 16); + invalid_chunk[2] = STBI__BYTECAST(c.type >> 8); + invalid_chunk[3] = STBI__BYTECAST(c.type >> 0); + #endif + return stbi__err(invalid_chunk, "PNG not supported: unknown PNG chunk type"); + } + stbi__skip(s, c.length); + break; + } + // end of PNG chunk, read and skip CRC + stbi__get32be(s); + } +} + +static void *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp, stbi__result_info *ri) +{ + void *result=NULL; + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + if (stbi__parse_png_file(p, STBI__SCAN_load, req_comp)) { + if (p->depth <= 8) + ri->bits_per_channel = 8; + else if (p->depth == 16) + ri->bits_per_channel = 16; + else + return stbi__errpuc("bad bits_per_channel", "PNG not supported: unsupported color depth"); + result = p->out; + p->out = NULL; + if (req_comp && req_comp != p->s->img_out_n) { + if (ri->bits_per_channel == 8) + result = stbi__convert_format((unsigned char *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + else + result = stbi__convert_format16((stbi__uint16 *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + p->s->img_out_n = req_comp; + if (result == NULL) return result; + } + *x = p->s->img_x; + *y = p->s->img_y; + if (n) *n = p->s->img_n; + } + STBI_FREE(p->out); p->out = NULL; + STBI_FREE(p->expanded); p->expanded = NULL; + STBI_FREE(p->idata); p->idata = NULL; + + return result; +} + +static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi__png p; + p.s = s; + return stbi__do_png(&p, x,y,comp,req_comp, ri); +} + +static int stbi__png_test(stbi__context *s) +{ + int r; + r = stbi__check_png_header(s); + stbi__rewind(s); + return r; +} + +static int stbi__png_info_raw(stbi__png *p, int *x, int *y, int *comp) +{ + if (!stbi__parse_png_file(p, STBI__SCAN_header, 0)) { + stbi__rewind( p->s ); + return 0; + } + if (x) *x = p->s->img_x; + if (y) *y = p->s->img_y; + if (comp) *comp = p->s->img_n; + return 1; +} + +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__png p; + p.s = s; + return stbi__png_info_raw(&p, x, y, comp); +} + +static int stbi__png_is16(stbi__context *s) +{ + stbi__png p; + p.s = s; + if (!stbi__png_info_raw(&p, NULL, NULL, NULL)) + return 0; + if (p.depth != 16) { + stbi__rewind(p.s); + return 0; + } + return 1; +} +#endif + +// Microsoft/Windows BMP image + +#ifndef STBI_NO_BMP +static int stbi__bmp_test_raw(stbi__context *s) +{ + int r; + int sz; + if (stbi__get8(s) != 'B') return 0; + if (stbi__get8(s) != 'M') return 0; + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + stbi__get32le(s); // discard data offset + sz = stbi__get32le(s); + r = (sz == 12 || sz == 40 || sz == 56 || sz == 108 || sz == 124); + return r; +} + +static int stbi__bmp_test(stbi__context *s) +{ + int r = stbi__bmp_test_raw(s); + stbi__rewind(s); + return r; +} + + +// returns 0..31 for the highest set bit +static int stbi__high_bit(unsigned int z) +{ + int n=0; + if (z == 0) return -1; + if (z >= 0x10000) { n += 16; z >>= 16; } + if (z >= 0x00100) { n += 8; z >>= 8; } + if (z >= 0x00010) { n += 4; z >>= 4; } + if (z >= 0x00004) { n += 2; z >>= 2; } + if (z >= 0x00002) { n += 1;/* >>= 1;*/ } + return n; +} + +static int stbi__bitcount(unsigned int a) +{ + a = (a & 0x55555555) + ((a >> 1) & 0x55555555); // max 2 + a = (a & 0x33333333) + ((a >> 2) & 0x33333333); // max 4 + a = (a + (a >> 4)) & 0x0f0f0f0f; // max 8 per 4, now 8 bits + a = (a + (a >> 8)); // max 16 per 8 bits + a = (a + (a >> 16)); // max 32 per 8 bits + return a & 0xff; +} + +// extract an arbitrarily-aligned N-bit value (N=bits) +// from v, and then make it 8-bits long and fractionally +// extend it to full full range. +static int stbi__shiftsigned(unsigned int v, int shift, int bits) +{ + static unsigned int mul_table[9] = { + 0, + 0xff/*0b11111111*/, 0x55/*0b01010101*/, 0x49/*0b01001001*/, 0x11/*0b00010001*/, + 0x21/*0b00100001*/, 0x41/*0b01000001*/, 0x81/*0b10000001*/, 0x01/*0b00000001*/, + }; + static unsigned int shift_table[9] = { + 0, 0,0,1,0,2,4,6,0, + }; + if (shift < 0) + v <<= -shift; + else + v >>= shift; + STBI_ASSERT(v < 256); + v >>= (8-bits); + STBI_ASSERT(bits >= 0 && bits <= 8); + return (int) ((unsigned) v * mul_table[bits]) >> shift_table[bits]; +} + +typedef struct +{ + int bpp, offset, hsz; + unsigned int mr,mg,mb,ma, all_a; + int extra_read; +} stbi__bmp_data; + +static int stbi__bmp_set_mask_defaults(stbi__bmp_data *info, int compress) +{ + // BI_BITFIELDS specifies masks explicitly, don't override + if (compress == 3) + return 1; + + if (compress == 0) { + if (info->bpp == 16) { + info->mr = 31u << 10; + info->mg = 31u << 5; + info->mb = 31u << 0; + } else if (info->bpp == 32) { + info->mr = 0xffu << 16; + info->mg = 0xffu << 8; + info->mb = 0xffu << 0; + info->ma = 0xffu << 24; + info->all_a = 0; // if all_a is 0 at end, then we loaded alpha channel but it was all 0 + } else { + // otherwise, use defaults, which is all-0 + info->mr = info->mg = info->mb = info->ma = 0; + } + return 1; + } + return 0; // error +} + +static void *stbi__bmp_parse_header(stbi__context *s, stbi__bmp_data *info) +{ + int hsz; + if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') return stbi__errpuc("not BMP", "Corrupt BMP"); + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + info->offset = stbi__get32le(s); + info->hsz = hsz = stbi__get32le(s); + info->mr = info->mg = info->mb = info->ma = 0; + info->extra_read = 14; + + if (info->offset < 0) return stbi__errpuc("bad BMP", "bad BMP"); + + if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) return stbi__errpuc("unknown BMP", "BMP type not supported: unknown"); + if (hsz == 12) { + s->img_x = stbi__get16le(s); + s->img_y = stbi__get16le(s); + } else { + s->img_x = stbi__get32le(s); + s->img_y = stbi__get32le(s); + } + if (stbi__get16le(s) != 1) return stbi__errpuc("bad BMP", "bad BMP"); + info->bpp = stbi__get16le(s); + if (hsz != 12) { + int compress = stbi__get32le(s); + if (compress == 1 || compress == 2) return stbi__errpuc("BMP RLE", "BMP type not supported: RLE"); + if (compress >= 4) return stbi__errpuc("BMP JPEG/PNG", "BMP type not supported: unsupported compression"); // this includes PNG/JPEG modes + if (compress == 3 && info->bpp != 16 && info->bpp != 32) return stbi__errpuc("bad BMP", "bad BMP"); // bitfields requires 16 or 32 bits/pixel + stbi__get32le(s); // discard sizeof + stbi__get32le(s); // discard hres + stbi__get32le(s); // discard vres + stbi__get32le(s); // discard colorsused + stbi__get32le(s); // discard max important + if (hsz == 40 || hsz == 56) { + if (hsz == 56) { + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + } + if (info->bpp == 16 || info->bpp == 32) { + if (compress == 0) { + stbi__bmp_set_mask_defaults(info, compress); + } else if (compress == 3) { + info->mr = stbi__get32le(s); + info->mg = stbi__get32le(s); + info->mb = stbi__get32le(s); + info->extra_read += 12; + // not documented, but generated by photoshop and handled by mspaint + if (info->mr == info->mg && info->mg == info->mb) { + // ?!?!? + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else { + // V4/V5 header + int i; + if (hsz != 108 && hsz != 124) + return stbi__errpuc("bad BMP", "bad BMP"); + info->mr = stbi__get32le(s); + info->mg = stbi__get32le(s); + info->mb = stbi__get32le(s); + info->ma = stbi__get32le(s); + if (compress != 3) // override mr/mg/mb unless in BI_BITFIELDS mode, as per docs + stbi__bmp_set_mask_defaults(info, compress); + stbi__get32le(s); // discard color space + for (i=0; i < 12; ++i) + stbi__get32le(s); // discard color space parameters + if (hsz == 124) { + stbi__get32le(s); // discard rendering intent + stbi__get32le(s); // discard offset of profile data + stbi__get32le(s); // discard size of profile data + stbi__get32le(s); // discard reserved + } + } + } + return (void *) 1; +} + + +static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *out; + unsigned int mr=0,mg=0,mb=0,ma=0, all_a; + stbi_uc pal[256][4]; + int psize=0,i,j,width; + int flip_vertically, pad, target; + stbi__bmp_data info; + STBI_NOTUSED(ri); + + info.all_a = 255; + if (stbi__bmp_parse_header(s, &info) == NULL) + return NULL; // error code already set + + flip_vertically = ((int) s->img_y) > 0; + s->img_y = abs((int) s->img_y); + + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + mr = info.mr; + mg = info.mg; + mb = info.mb; + ma = info.ma; + all_a = info.all_a; + + if (info.hsz == 12) { + if (info.bpp < 24) + psize = (info.offset - info.extra_read - 24) / 3; + } else { + if (info.bpp < 16) + psize = (info.offset - info.extra_read - info.hsz) >> 2; + } + if (psize == 0) { + // accept some number of extra bytes after the header, but if the offset points either to before + // the header ends or implies a large amount of extra data, reject the file as malformed + int bytes_read_so_far = s->callback_already_read + (int)(s->img_buffer - s->img_buffer_original); + int header_limit = 1024; // max we actually read is below 256 bytes currently. + int extra_data_limit = 256*4; // what ordinarily goes here is a palette; 256 entries*4 bytes is its max size. + if (bytes_read_so_far <= 0 || bytes_read_so_far > header_limit) { + return stbi__errpuc("bad header", "Corrupt BMP"); + } + // we established that bytes_read_so_far is positive and sensible. + // the first half of this test rejects offsets that are either too small positives, or + // negative, and guarantees that info.offset >= bytes_read_so_far > 0. this in turn + // ensures the number computed in the second half of the test can't overflow. + if (info.offset < bytes_read_so_far || info.offset - bytes_read_so_far > extra_data_limit) { + return stbi__errpuc("bad offset", "Corrupt BMP"); + } else { + stbi__skip(s, info.offset - bytes_read_so_far); + } + } + + if (info.bpp == 24 && ma == 0xff000000) + s->img_n = 3; + else + s->img_n = ma ? 4 : 3; + if (req_comp && req_comp >= 3) // we can directly decode 3 or 4 + target = req_comp; + else + target = s->img_n; // if they want monochrome, we'll post-convert + + // sanity-check size + if (!stbi__mad3sizes_valid(target, s->img_x, s->img_y, 0)) + return stbi__errpuc("too large", "Corrupt BMP"); + + out = (stbi_uc *) stbi__malloc_mad3(target, s->img_x, s->img_y, 0); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + if (info.bpp < 16) { + int z=0; + if (psize == 0 || psize > 256) { STBI_FREE(out); return stbi__errpuc("invalid", "Corrupt BMP"); } + for (i=0; i < psize; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + if (info.hsz != 12) stbi__get8(s); + pal[i][3] = 255; + } + stbi__skip(s, info.offset - info.extra_read - info.hsz - psize * (info.hsz == 12 ? 3 : 4)); + if (info.bpp == 1) width = (s->img_x + 7) >> 3; + else if (info.bpp == 4) width = (s->img_x + 1) >> 1; + else if (info.bpp == 8) width = s->img_x; + else { STBI_FREE(out); return stbi__errpuc("bad bpp", "Corrupt BMP"); } + pad = (-width)&3; + if (info.bpp == 1) { + for (j=0; j < (int) s->img_y; ++j) { + int bit_offset = 7, v = stbi__get8(s); + for (i=0; i < (int) s->img_x; ++i) { + int color = (v>>bit_offset)&0x1; + out[z++] = pal[color][0]; + out[z++] = pal[color][1]; + out[z++] = pal[color][2]; + if (target == 4) out[z++] = 255; + if (i+1 == (int) s->img_x) break; + if((--bit_offset) < 0) { + bit_offset = 7; + v = stbi__get8(s); + } + } + stbi__skip(s, pad); + } + } else { + for (j=0; j < (int) s->img_y; ++j) { + for (i=0; i < (int) s->img_x; i += 2) { + int v=stbi__get8(s),v2=0; + if (info.bpp == 4) { + v2 = v & 15; + v >>= 4; + } + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + if (i+1 == (int) s->img_x) break; + v = (info.bpp == 8) ? stbi__get8(s) : v2; + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + } + stbi__skip(s, pad); + } + } + } else { + int rshift=0,gshift=0,bshift=0,ashift=0,rcount=0,gcount=0,bcount=0,acount=0; + int z = 0; + int easy=0; + stbi__skip(s, info.offset - info.extra_read - info.hsz); + if (info.bpp == 24) width = 3 * s->img_x; + else if (info.bpp == 16) width = 2*s->img_x; + else /* bpp = 32 and pad = 0 */ width=0; + pad = (-width) & 3; + if (info.bpp == 24) { + easy = 1; + } else if (info.bpp == 32) { + if (mb == 0xff && mg == 0xff00 && mr == 0x00ff0000 && ma == 0xff000000) + easy = 2; + } + if (!easy) { + if (!mr || !mg || !mb) { STBI_FREE(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } + // right shift amt to put high bit in position #7 + rshift = stbi__high_bit(mr)-7; rcount = stbi__bitcount(mr); + gshift = stbi__high_bit(mg)-7; gcount = stbi__bitcount(mg); + bshift = stbi__high_bit(mb)-7; bcount = stbi__bitcount(mb); + ashift = stbi__high_bit(ma)-7; acount = stbi__bitcount(ma); + if (rcount > 8 || gcount > 8 || bcount > 8 || acount > 8) { STBI_FREE(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } + } + for (j=0; j < (int) s->img_y; ++j) { + if (easy) { + for (i=0; i < (int) s->img_x; ++i) { + unsigned char a; + out[z+2] = stbi__get8(s); + out[z+1] = stbi__get8(s); + out[z+0] = stbi__get8(s); + z += 3; + a = (easy == 2 ? stbi__get8(s) : 255); + all_a |= a; + if (target == 4) out[z++] = a; + } + } else { + int bpp = info.bpp; + for (i=0; i < (int) s->img_x; ++i) { + stbi__uint32 v = (bpp == 16 ? (stbi__uint32) stbi__get16le(s) : stbi__get32le(s)); + unsigned int a; + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mr, rshift, rcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mg, gshift, gcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mb, bshift, bcount)); + a = (ma ? stbi__shiftsigned(v & ma, ashift, acount) : 255); + all_a |= a; + if (target == 4) out[z++] = STBI__BYTECAST(a); + } + } + stbi__skip(s, pad); + } + } + + // if alpha channel is all 0s, replace with all 255s + if (target == 4 && all_a == 0) + for (i=4*s->img_x*s->img_y-1; i >= 0; i -= 4) + out[i] = 255; + + if (flip_vertically) { + stbi_uc t; + for (j=0; j < (int) s->img_y>>1; ++j) { + stbi_uc *p1 = out + j *s->img_x*target; + stbi_uc *p2 = out + (s->img_y-1-j)*s->img_x*target; + for (i=0; i < (int) s->img_x*target; ++i) { + t = p1[i]; p1[i] = p2[i]; p2[i] = t; + } + } + } + + if (req_comp && req_comp != target) { + out = stbi__convert_format(out, target, req_comp, s->img_x, s->img_y); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + *x = s->img_x; + *y = s->img_y; + if (comp) *comp = s->img_n; + return out; +} +#endif + +// Targa Truevision - TGA +// by Jonathan Dummer +#ifndef STBI_NO_TGA +// returns STBI_rgb or whatever, 0 on error +static int stbi__tga_get_comp(int bits_per_pixel, int is_grey, int* is_rgb16) +{ + // only RGB or RGBA (incl. 16bit) or grey allowed + if (is_rgb16) *is_rgb16 = 0; + switch(bits_per_pixel) { + case 8: return STBI_grey; + case 16: if(is_grey) return STBI_grey_alpha; + // fallthrough + case 15: if(is_rgb16) *is_rgb16 = 1; + return STBI_rgb; + case 24: // fallthrough + case 32: return bits_per_pixel/8; + default: return 0; + } +} + +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp) +{ + int tga_w, tga_h, tga_comp, tga_image_type, tga_bits_per_pixel, tga_colormap_bpp; + int sz, tga_colormap_type; + stbi__get8(s); // discard Offset + tga_colormap_type = stbi__get8(s); // colormap type + if( tga_colormap_type > 1 ) { + stbi__rewind(s); + return 0; // only RGB or indexed allowed + } + tga_image_type = stbi__get8(s); // image type + if ( tga_colormap_type == 1 ) { // colormapped (paletted) image + if (tga_image_type != 1 && tga_image_type != 9) { + stbi__rewind(s); + return 0; + } + stbi__skip(s,4); // skip index of first colormap entry and number of entries + sz = stbi__get8(s); // check bits per palette color entry + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) { + stbi__rewind(s); + return 0; + } + stbi__skip(s,4); // skip image x and y origin + tga_colormap_bpp = sz; + } else { // "normal" image w/o colormap - only RGB or grey allowed, +/- RLE + if ( (tga_image_type != 2) && (tga_image_type != 3) && (tga_image_type != 10) && (tga_image_type != 11) ) { + stbi__rewind(s); + return 0; // only RGB or grey allowed, +/- RLE + } + stbi__skip(s,9); // skip colormap specification and image x/y origin + tga_colormap_bpp = 0; + } + tga_w = stbi__get16le(s); + if( tga_w < 1 ) { + stbi__rewind(s); + return 0; // test width + } + tga_h = stbi__get16le(s); + if( tga_h < 1 ) { + stbi__rewind(s); + return 0; // test height + } + tga_bits_per_pixel = stbi__get8(s); // bits per pixel + stbi__get8(s); // ignore alpha bits + if (tga_colormap_bpp != 0) { + if((tga_bits_per_pixel != 8) && (tga_bits_per_pixel != 16)) { + // when using a colormap, tga_bits_per_pixel is the size of the indexes + // I don't think anything but 8 or 16bit indexes makes sense + stbi__rewind(s); + return 0; + } + tga_comp = stbi__tga_get_comp(tga_colormap_bpp, 0, NULL); + } else { + tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3) || (tga_image_type == 11), NULL); + } + if(!tga_comp) { + stbi__rewind(s); + return 0; + } + if (x) *x = tga_w; + if (y) *y = tga_h; + if (comp) *comp = tga_comp; + return 1; // seems to have passed everything +} + +static int stbi__tga_test(stbi__context *s) +{ + int res = 0; + int sz, tga_color_type; + stbi__get8(s); // discard Offset + tga_color_type = stbi__get8(s); // color type + if ( tga_color_type > 1 ) goto errorEnd; // only RGB or indexed allowed + sz = stbi__get8(s); // image type + if ( tga_color_type == 1 ) { // colormapped (paletted) image + if (sz != 1 && sz != 9) goto errorEnd; // colortype 1 demands image type 1 or 9 + stbi__skip(s,4); // skip index of first colormap entry and number of entries + sz = stbi__get8(s); // check bits per palette color entry + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; + stbi__skip(s,4); // skip image x and y origin + } else { // "normal" image w/o colormap + if ( (sz != 2) && (sz != 3) && (sz != 10) && (sz != 11) ) goto errorEnd; // only RGB or grey allowed, +/- RLE + stbi__skip(s,9); // skip colormap specification and image x/y origin + } + if ( stbi__get16le(s) < 1 ) goto errorEnd; // test width + if ( stbi__get16le(s) < 1 ) goto errorEnd; // test height + sz = stbi__get8(s); // bits per pixel + if ( (tga_color_type == 1) && (sz != 8) && (sz != 16) ) goto errorEnd; // for colormapped images, bpp is size of an index + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; + + res = 1; // if we got this far, everything's good and we can return 1 instead of 0 + +errorEnd: + stbi__rewind(s); + return res; +} + +// read 16bit value and convert to 24bit RGB +static void stbi__tga_read_rgb16(stbi__context *s, stbi_uc* out) +{ + stbi__uint16 px = (stbi__uint16)stbi__get16le(s); + stbi__uint16 fiveBitMask = 31; + // we have 3 channels with 5bits each + int r = (px >> 10) & fiveBitMask; + int g = (px >> 5) & fiveBitMask; + int b = px & fiveBitMask; + // Note that this saves the data in RGB(A) order, so it doesn't need to be swapped later + out[0] = (stbi_uc)((r * 255)/31); + out[1] = (stbi_uc)((g * 255)/31); + out[2] = (stbi_uc)((b * 255)/31); + + // some people claim that the most significant bit might be used for alpha + // (possibly if an alpha-bit is set in the "image descriptor byte") + // but that only made 16bit test images completely translucent.. + // so let's treat all 15 and 16bit TGAs as RGB with no alpha. +} + +static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + // read in the TGA header stuff + int tga_offset = stbi__get8(s); + int tga_indexed = stbi__get8(s); + int tga_image_type = stbi__get8(s); + int tga_is_RLE = 0; + int tga_palette_start = stbi__get16le(s); + int tga_palette_len = stbi__get16le(s); + int tga_palette_bits = stbi__get8(s); + int tga_x_origin = stbi__get16le(s); + int tga_y_origin = stbi__get16le(s); + int tga_width = stbi__get16le(s); + int tga_height = stbi__get16le(s); + int tga_bits_per_pixel = stbi__get8(s); + int tga_comp, tga_rgb16=0; + int tga_inverted = stbi__get8(s); + // int tga_alpha_bits = tga_inverted & 15; // the 4 lowest bits - unused (useless?) + // image data + unsigned char *tga_data; + unsigned char *tga_palette = NULL; + int i, j; + unsigned char raw_data[4] = {0}; + int RLE_count = 0; + int RLE_repeating = 0; + int read_next_pixel = 1; + STBI_NOTUSED(ri); + STBI_NOTUSED(tga_x_origin); // @TODO + STBI_NOTUSED(tga_y_origin); // @TODO + + if (tga_height > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (tga_width > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + // do a tiny bit of precessing + if ( tga_image_type >= 8 ) + { + tga_image_type -= 8; + tga_is_RLE = 1; + } + tga_inverted = 1 - ((tga_inverted >> 5) & 1); + + // If I'm paletted, then I'll use the number of bits from the palette + if ( tga_indexed ) tga_comp = stbi__tga_get_comp(tga_palette_bits, 0, &tga_rgb16); + else tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3), &tga_rgb16); + + if(!tga_comp) // shouldn't really happen, stbi__tga_test() should have ensured basic consistency + return stbi__errpuc("bad format", "Can't find out TGA pixelformat"); + + // tga info + *x = tga_width; + *y = tga_height; + if (comp) *comp = tga_comp; + + if (!stbi__mad3sizes_valid(tga_width, tga_height, tga_comp, 0)) + return stbi__errpuc("too large", "Corrupt TGA"); + + tga_data = (unsigned char*)stbi__malloc_mad3(tga_width, tga_height, tga_comp, 0); + if (!tga_data) return stbi__errpuc("outofmem", "Out of memory"); + + // skip to the data's starting position (offset usually = 0) + stbi__skip(s, tga_offset ); + + if ( !tga_indexed && !tga_is_RLE && !tga_rgb16 ) { + for (i=0; i < tga_height; ++i) { + int row = tga_inverted ? tga_height -i - 1 : i; + stbi_uc *tga_row = tga_data + row*tga_width*tga_comp; + stbi__getn(s, tga_row, tga_width * tga_comp); + } + } else { + // do I need to load a palette? + if ( tga_indexed) + { + if (tga_palette_len == 0) { /* you have to have at least one entry! */ + STBI_FREE(tga_data); + return stbi__errpuc("bad palette", "Corrupt TGA"); + } + + // any data to skip? (offset usually = 0) + stbi__skip(s, tga_palette_start ); + // load the palette + tga_palette = (unsigned char*)stbi__malloc_mad2(tga_palette_len, tga_comp, 0); + if (!tga_palette) { + STBI_FREE(tga_data); + return stbi__errpuc("outofmem", "Out of memory"); + } + if (tga_rgb16) { + stbi_uc *pal_entry = tga_palette; + STBI_ASSERT(tga_comp == STBI_rgb); + for (i=0; i < tga_palette_len; ++i) { + stbi__tga_read_rgb16(s, pal_entry); + pal_entry += tga_comp; + } + } else if (!stbi__getn(s, tga_palette, tga_palette_len * tga_comp)) { + STBI_FREE(tga_data); + STBI_FREE(tga_palette); + return stbi__errpuc("bad palette", "Corrupt TGA"); + } + } + // load the data + for (i=0; i < tga_width * tga_height; ++i) + { + // if I'm in RLE mode, do I need to get a RLE stbi__pngchunk? + if ( tga_is_RLE ) + { + if ( RLE_count == 0 ) + { + // yep, get the next byte as a RLE command + int RLE_cmd = stbi__get8(s); + RLE_count = 1 + (RLE_cmd & 127); + RLE_repeating = RLE_cmd >> 7; + read_next_pixel = 1; + } else if ( !RLE_repeating ) + { + read_next_pixel = 1; + } + } else + { + read_next_pixel = 1; + } + // OK, if I need to read a pixel, do it now + if ( read_next_pixel ) + { + // load however much data we did have + if ( tga_indexed ) + { + // read in index, then perform the lookup + int pal_idx = (tga_bits_per_pixel == 8) ? stbi__get8(s) : stbi__get16le(s); + if ( pal_idx >= tga_palette_len ) { + // invalid index + pal_idx = 0; + } + pal_idx *= tga_comp; + for (j = 0; j < tga_comp; ++j) { + raw_data[j] = tga_palette[pal_idx+j]; + } + } else if(tga_rgb16) { + STBI_ASSERT(tga_comp == STBI_rgb); + stbi__tga_read_rgb16(s, raw_data); + } else { + // read in the data raw + for (j = 0; j < tga_comp; ++j) { + raw_data[j] = stbi__get8(s); + } + } + // clear the reading flag for the next pixel + read_next_pixel = 0; + } // end of reading a pixel + + // copy data + for (j = 0; j < tga_comp; ++j) + tga_data[i*tga_comp+j] = raw_data[j]; + + // in case we're in RLE mode, keep counting down + --RLE_count; + } + // do I need to invert the image? + if ( tga_inverted ) + { + for (j = 0; j*2 < tga_height; ++j) + { + int index1 = j * tga_width * tga_comp; + int index2 = (tga_height - 1 - j) * tga_width * tga_comp; + for (i = tga_width * tga_comp; i > 0; --i) + { + unsigned char temp = tga_data[index1]; + tga_data[index1] = tga_data[index2]; + tga_data[index2] = temp; + ++index1; + ++index2; + } + } + } + // clear my palette, if I had one + if ( tga_palette != NULL ) + { + STBI_FREE( tga_palette ); + } + } + + // swap RGB - if the source data was RGB16, it already is in the right order + if (tga_comp >= 3 && !tga_rgb16) + { + unsigned char* tga_pixel = tga_data; + for (i=0; i < tga_width * tga_height; ++i) + { + unsigned char temp = tga_pixel[0]; + tga_pixel[0] = tga_pixel[2]; + tga_pixel[2] = temp; + tga_pixel += tga_comp; + } + } + + // convert to target component count + if (req_comp && req_comp != tga_comp) + tga_data = stbi__convert_format(tga_data, tga_comp, req_comp, tga_width, tga_height); + + // the things I do to get rid of an error message, and yet keep + // Microsoft's C compilers happy... [8^( + tga_palette_start = tga_palette_len = tga_palette_bits = + tga_x_origin = tga_y_origin = 0; + STBI_NOTUSED(tga_palette_start); + // OK, done + return tga_data; +} +#endif + +// ************************************************************************************************* +// Photoshop PSD loader -- PD by Thatcher Ulrich, integration by Nicolas Schulz, tweaked by STB + +#ifndef STBI_NO_PSD +static int stbi__psd_test(stbi__context *s) +{ + int r = (stbi__get32be(s) == 0x38425053); + stbi__rewind(s); + return r; +} + +static int stbi__psd_decode_rle(stbi__context *s, stbi_uc *p, int pixelCount) +{ + int count, nleft, len; + + count = 0; + while ((nleft = pixelCount - count) > 0) { + len = stbi__get8(s); + if (len == 128) { + // No-op. + } else if (len < 128) { + // Copy next len+1 bytes literally. + len++; + if (len > nleft) return 0; // corrupt data + count += len; + while (len) { + *p = stbi__get8(s); + p += 4; + len--; + } + } else if (len > 128) { + stbi_uc val; + // Next -len+1 bytes in the dest are replicated from next source byte. + // (Interpret len as a negative 8-bit int.) + len = 257 - len; + if (len > nleft) return 0; // corrupt data + val = stbi__get8(s); + count += len; + while (len) { + *p = val; + p += 4; + len--; + } + } + } + + return 1; +} + +static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) +{ + int pixelCount; + int channelCount, compression; + int channel, i; + int bitdepth; + int w,h; + stbi_uc *out; + STBI_NOTUSED(ri); + + // Check identifier + if (stbi__get32be(s) != 0x38425053) // "8BPS" + return stbi__errpuc("not PSD", "Corrupt PSD image"); + + // Check file type version. + if (stbi__get16be(s) != 1) + return stbi__errpuc("wrong version", "Unsupported version of PSD image"); + + // Skip 6 reserved bytes. + stbi__skip(s, 6 ); + + // Read the number of channels (R, G, B, A, etc). + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) + return stbi__errpuc("wrong channel count", "Unsupported number of channels in PSD image"); + + // Read the rows and columns of the image. + h = stbi__get32be(s); + w = stbi__get32be(s); + + if (h > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (w > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + // Make sure the depth is 8 bits. + bitdepth = stbi__get16be(s); + if (bitdepth != 8 && bitdepth != 16) + return stbi__errpuc("unsupported bit depth", "PSD bit depth is not 8 or 16 bit"); + + // Make sure the color mode is RGB. + // Valid options are: + // 0: Bitmap + // 1: Grayscale + // 2: Indexed color + // 3: RGB color + // 4: CMYK color + // 7: Multichannel + // 8: Duotone + // 9: Lab color + if (stbi__get16be(s) != 3) + return stbi__errpuc("wrong color format", "PSD is not in RGB color format"); + + // Skip the Mode Data. (It's the palette for indexed color; other info for other modes.) + stbi__skip(s,stbi__get32be(s) ); + + // Skip the image resources. (resolution, pen tool paths, etc) + stbi__skip(s, stbi__get32be(s) ); + + // Skip the reserved data. + stbi__skip(s, stbi__get32be(s) ); + + // Find out if the data is compressed. + // Known values: + // 0: no compression + // 1: RLE compressed + compression = stbi__get16be(s); + if (compression > 1) + return stbi__errpuc("bad compression", "PSD has an unknown compression format"); + + // Check size + if (!stbi__mad3sizes_valid(4, w, h, 0)) + return stbi__errpuc("too large", "Corrupt PSD"); + + // Create the destination image. + + if (!compression && bitdepth == 16 && bpc == 16) { + out = (stbi_uc *) stbi__malloc_mad3(8, w, h, 0); + ri->bits_per_channel = 16; + } else + out = (stbi_uc *) stbi__malloc(4 * w*h); + + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + pixelCount = w*h; + + // Initialize the data to zero. + //memset( out, 0, pixelCount * 4 ); + + // Finally, the image data. + if (compression) { + // RLE as used by .PSD and .TIFF + // Loop until you get the number of unpacked bytes you are expecting: + // Read the next source byte into n. + // If n is between 0 and 127 inclusive, copy the next n+1 bytes literally. + // Else if n is between -127 and -1 inclusive, copy the next byte -n+1 times. + // Else if n is 128, noop. + // Endloop + + // The RLE-compressed data is preceded by a 2-byte data count for each row in the data, + // which we're going to just skip. + stbi__skip(s, h * channelCount * 2 ); + + // Read the RLE data by channel. + for (channel = 0; channel < 4; channel++) { + stbi_uc *p; + + p = out+channel; + if (channel >= channelCount) { + // Fill this channel with default data. + for (i = 0; i < pixelCount; i++, p += 4) + *p = (channel == 3 ? 255 : 0); + } else { + // Read the RLE data. + if (!stbi__psd_decode_rle(s, p, pixelCount)) { + STBI_FREE(out); + return stbi__errpuc("corrupt", "bad RLE data"); + } + } + } + + } else { + // We're at the raw image data. It's each channel in order (Red, Green, Blue, Alpha, ...) + // where each channel consists of an 8-bit (or 16-bit) value for each pixel in the image. + + // Read the data by channel. + for (channel = 0; channel < 4; channel++) { + if (channel >= channelCount) { + // Fill this channel with default data. + if (bitdepth == 16 && bpc == 16) { + stbi__uint16 *q = ((stbi__uint16 *) out) + channel; + stbi__uint16 val = channel == 3 ? 65535 : 0; + for (i = 0; i < pixelCount; i++, q += 4) + *q = val; + } else { + stbi_uc *p = out+channel; + stbi_uc val = channel == 3 ? 255 : 0; + for (i = 0; i < pixelCount; i++, p += 4) + *p = val; + } + } else { + if (ri->bits_per_channel == 16) { // output bpc + stbi__uint16 *q = ((stbi__uint16 *) out) + channel; + for (i = 0; i < pixelCount; i++, q += 4) + *q = (stbi__uint16) stbi__get16be(s); + } else { + stbi_uc *p = out+channel; + if (bitdepth == 16) { // input bpc + for (i = 0; i < pixelCount; i++, p += 4) + *p = (stbi_uc) (stbi__get16be(s) >> 8); + } else { + for (i = 0; i < pixelCount; i++, p += 4) + *p = stbi__get8(s); + } + } + } + } + } + + // remove weird white matte from PSD + if (channelCount >= 4) { + if (ri->bits_per_channel == 16) { + for (i=0; i < w*h; ++i) { + stbi__uint16 *pixel = (stbi__uint16 *) out + 4*i; + if (pixel[3] != 0 && pixel[3] != 65535) { + float a = pixel[3] / 65535.0f; + float ra = 1.0f / a; + float inv_a = 65535.0f * (1 - ra); + pixel[0] = (stbi__uint16) (pixel[0]*ra + inv_a); + pixel[1] = (stbi__uint16) (pixel[1]*ra + inv_a); + pixel[2] = (stbi__uint16) (pixel[2]*ra + inv_a); + } + } + } else { + for (i=0; i < w*h; ++i) { + unsigned char *pixel = out + 4*i; + if (pixel[3] != 0 && pixel[3] != 255) { + float a = pixel[3] / 255.0f; + float ra = 1.0f / a; + float inv_a = 255.0f * (1 - ra); + pixel[0] = (unsigned char) (pixel[0]*ra + inv_a); + pixel[1] = (unsigned char) (pixel[1]*ra + inv_a); + pixel[2] = (unsigned char) (pixel[2]*ra + inv_a); + } + } + } + } + + // convert to desired output format + if (req_comp && req_comp != 4) { + if (ri->bits_per_channel == 16) + out = (stbi_uc *) stbi__convert_format16((stbi__uint16 *) out, 4, req_comp, w, h); + else + out = stbi__convert_format(out, 4, req_comp, w, h); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + if (comp) *comp = 4; + *y = h; + *x = w; + + return out; +} +#endif + +// ************************************************************************************************* +// Softimage PIC loader +// by Tom Seddon +// +// See http://softimage.wiki.softimage.com/index.php/INFO:_PIC_file_format +// See http://ozviz.wasp.uwa.edu.au/~pbourke/dataformats/softimagepic/ + +#ifndef STBI_NO_PIC +static int stbi__pic_is4(stbi__context *s,const char *str) +{ + int i; + for (i=0; i<4; ++i) + if (stbi__get8(s) != (stbi_uc)str[i]) + return 0; + + return 1; +} + +static int stbi__pic_test_core(stbi__context *s) +{ + int i; + + if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) + return 0; + + for(i=0;i<84;++i) + stbi__get8(s); + + if (!stbi__pic_is4(s,"PICT")) + return 0; + + return 1; +} + +typedef struct +{ + stbi_uc size,type,channel; +} stbi__pic_packet; + +static stbi_uc *stbi__readval(stbi__context *s, int channel, stbi_uc *dest) +{ + int mask=0x80, i; + + for (i=0; i<4; ++i, mask>>=1) { + if (channel & mask) { + if (stbi__at_eof(s)) return stbi__errpuc("bad file","PIC file too short"); + dest[i]=stbi__get8(s); + } + } + + return dest; +} + +static void stbi__copyval(int channel,stbi_uc *dest,const stbi_uc *src) +{ + int mask=0x80,i; + + for (i=0;i<4; ++i, mask>>=1) + if (channel&mask) + dest[i]=src[i]; +} + +static stbi_uc *stbi__pic_load_core(stbi__context *s,int width,int height,int *comp, stbi_uc *result) +{ + int act_comp=0,num_packets=0,y,chained; + stbi__pic_packet packets[10]; + + // this will (should...) cater for even some bizarre stuff like having data + // for the same channel in multiple packets. + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return stbi__errpuc("bad format","too many packets"); + + packet = &packets[num_packets++]; + + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + + act_comp |= packet->channel; + + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (reading packets)"); + if (packet->size != 8) return stbi__errpuc("bad format","packet isn't 8bpp"); + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); // has alpha channel? + + for(y=0; ytype) { + default: + return stbi__errpuc("bad format","packet has bad compression type"); + + case 0: {//uncompressed + int x; + + for(x=0;xchannel,dest)) + return 0; + break; + } + + case 1://Pure RLE + { + int left=width, i; + + while (left>0) { + stbi_uc count,value[4]; + + count=stbi__get8(s); + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pure read count)"); + + if (count > left) + count = (stbi_uc) left; + + if (!stbi__readval(s,packet->channel,value)) return 0; + + for(i=0; ichannel,dest,value); + left -= count; + } + } + break; + + case 2: {//Mixed RLE + int left=width; + while (left>0) { + int count = stbi__get8(s), i; + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (mixed read count)"); + + if (count >= 128) { // Repeated + stbi_uc value[4]; + + if (count==128) + count = stbi__get16be(s); + else + count -= 127; + if (count > left) + return stbi__errpuc("bad file","scanline overrun"); + + if (!stbi__readval(s,packet->channel,value)) + return 0; + + for(i=0;ichannel,dest,value); + } else { // Raw + ++count; + if (count>left) return stbi__errpuc("bad file","scanline overrun"); + + for(i=0;ichannel,dest)) + return 0; + } + left-=count; + } + break; + } + } + } + } + + return result; +} + +static void *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int req_comp, stbi__result_info *ri) +{ + stbi_uc *result; + int i, x,y, internal_comp; + STBI_NOTUSED(ri); + + if (!comp) comp = &internal_comp; + + for (i=0; i<92; ++i) + stbi__get8(s); + + x = stbi__get16be(s); + y = stbi__get16be(s); + + if (y > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (x > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pic header)"); + if (!stbi__mad3sizes_valid(x, y, 4, 0)) return stbi__errpuc("too large", "PIC image too large to decode"); + + stbi__get32be(s); //skip `ratio' + stbi__get16be(s); //skip `fields' + stbi__get16be(s); //skip `pad' + + // intermediate buffer is RGBA + result = (stbi_uc *) stbi__malloc_mad3(x, y, 4, 0); + if (!result) return stbi__errpuc("outofmem", "Out of memory"); + memset(result, 0xff, x*y*4); + + if (!stbi__pic_load_core(s,x,y,comp, result)) { + STBI_FREE(result); + result=0; + } + *px = x; + *py = y; + if (req_comp == 0) req_comp = *comp; + result=stbi__convert_format(result,4,req_comp,x,y); + + return result; +} + +static int stbi__pic_test(stbi__context *s) +{ + int r = stbi__pic_test_core(s); + stbi__rewind(s); + return r; +} +#endif + +// ************************************************************************************************* +// GIF loader -- public domain by Jean-Marc Lienher -- simplified/shrunk by stb + +#ifndef STBI_NO_GIF +typedef struct +{ + stbi__int16 prefix; + stbi_uc first; + stbi_uc suffix; +} stbi__gif_lzw; + +typedef struct +{ + int w,h; + stbi_uc *out; // output buffer (always 4 components) + stbi_uc *background; // The current "background" as far as a gif is concerned + stbi_uc *history; + int flags, bgindex, ratio, transparent, eflags; + stbi_uc pal[256][4]; + stbi_uc lpal[256][4]; + stbi__gif_lzw codes[8192]; + stbi_uc *color_table; + int parse, step; + int lflags; + int start_x, start_y; + int max_x, max_y; + int cur_x, cur_y; + int line_size; + int delay; +} stbi__gif; + +static int stbi__gif_test_raw(stbi__context *s) +{ + int sz; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') return 0; + sz = stbi__get8(s); + if (sz != '9' && sz != '7') return 0; + if (stbi__get8(s) != 'a') return 0; + return 1; +} + +static int stbi__gif_test(stbi__context *s) +{ + int r = stbi__gif_test_raw(s); + stbi__rewind(s); + return r; +} + +static void stbi__gif_parse_colortable(stbi__context *s, stbi_uc pal[256][4], int num_entries, int transp) +{ + int i; + for (i=0; i < num_entries; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + pal[i][3] = transp == i ? 0 : 255; + } +} + +static int stbi__gif_header(stbi__context *s, stbi__gif *g, int *comp, int is_info) +{ + stbi_uc version; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') + return stbi__err("not GIF", "Corrupt GIF"); + + version = stbi__get8(s); + if (version != '7' && version != '9') return stbi__err("not GIF", "Corrupt GIF"); + if (stbi__get8(s) != 'a') return stbi__err("not GIF", "Corrupt GIF"); + + stbi__g_failure_reason = ""; + g->w = stbi__get16le(s); + g->h = stbi__get16le(s); + g->flags = stbi__get8(s); + g->bgindex = stbi__get8(s); + g->ratio = stbi__get8(s); + g->transparent = -1; + + if (g->w > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + if (g->h > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + + if (comp != 0) *comp = 4; // can't actually tell whether it's 3 or 4 until we parse the comments + + if (is_info) return 1; + + if (g->flags & 0x80) + stbi__gif_parse_colortable(s,g->pal, 2 << (g->flags & 7), -1); + + return 1; +} + +static int stbi__gif_info_raw(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__gif* g = (stbi__gif*) stbi__malloc(sizeof(stbi__gif)); + if (!g) return stbi__err("outofmem", "Out of memory"); + if (!stbi__gif_header(s, g, comp, 1)) { + STBI_FREE(g); + stbi__rewind( s ); + return 0; + } + if (x) *x = g->w; + if (y) *y = g->h; + STBI_FREE(g); + return 1; +} + +static void stbi__out_gif_code(stbi__gif *g, stbi__uint16 code) +{ + stbi_uc *p, *c; + int idx; + + // recurse to decode the prefixes, since the linked-list is backwards, + // and working backwards through an interleaved image would be nasty + if (g->codes[code].prefix >= 0) + stbi__out_gif_code(g, g->codes[code].prefix); + + if (g->cur_y >= g->max_y) return; + + idx = g->cur_x + g->cur_y; + p = &g->out[idx]; + g->history[idx / 4] = 1; + + c = &g->color_table[g->codes[code].suffix * 4]; + if (c[3] > 128) { // don't render transparent pixels; + p[0] = c[2]; + p[1] = c[1]; + p[2] = c[0]; + p[3] = c[3]; + } + g->cur_x += 4; + + if (g->cur_x >= g->max_x) { + g->cur_x = g->start_x; + g->cur_y += g->step; + + while (g->cur_y >= g->max_y && g->parse > 0) { + g->step = (1 << g->parse) * g->line_size; + g->cur_y = g->start_y + (g->step >> 1); + --g->parse; + } + } +} + +static stbi_uc *stbi__process_gif_raster(stbi__context *s, stbi__gif *g) +{ + stbi_uc lzw_cs; + stbi__int32 len, init_code; + stbi__uint32 first; + stbi__int32 codesize, codemask, avail, oldcode, bits, valid_bits, clear; + stbi__gif_lzw *p; + + lzw_cs = stbi__get8(s); + if (lzw_cs > 12) return NULL; + clear = 1 << lzw_cs; + first = 1; + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + bits = 0; + valid_bits = 0; + for (init_code = 0; init_code < clear; init_code++) { + g->codes[init_code].prefix = -1; + g->codes[init_code].first = (stbi_uc) init_code; + g->codes[init_code].suffix = (stbi_uc) init_code; + } + + // support no starting clear code + avail = clear+2; + oldcode = -1; + + len = 0; + for(;;) { + if (valid_bits < codesize) { + if (len == 0) { + len = stbi__get8(s); // start new block + if (len == 0) + return g->out; + } + --len; + bits |= (stbi__int32) stbi__get8(s) << valid_bits; + valid_bits += 8; + } else { + stbi__int32 code = bits & codemask; + bits >>= codesize; + valid_bits -= codesize; + // @OPTIMIZE: is there some way we can accelerate the non-clear path? + if (code == clear) { // clear code + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + avail = clear + 2; + oldcode = -1; + first = 0; + } else if (code == clear + 1) { // end of stream code + stbi__skip(s, len); + while ((len = stbi__get8(s)) > 0) + stbi__skip(s,len); + return g->out; + } else if (code <= avail) { + if (first) { + return stbi__errpuc("no clear code", "Corrupt GIF"); + } + + if (oldcode >= 0) { + p = &g->codes[avail++]; + if (avail > 8192) { + return stbi__errpuc("too many codes", "Corrupt GIF"); + } + + p->prefix = (stbi__int16) oldcode; + p->first = g->codes[oldcode].first; + p->suffix = (code == avail) ? p->first : g->codes[code].first; + } else if (code == avail) + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + + stbi__out_gif_code(g, (stbi__uint16) code); + + if ((avail & codemask) == 0 && avail <= 0x0FFF) { + codesize++; + codemask = (1 << codesize) - 1; + } + + oldcode = code; + } else { + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + } + } + } +} + +// this function is designed to support animated gifs, although stb_image doesn't support it +// two back is the image from two frames ago, used for a very specific disposal format +static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, int req_comp, stbi_uc *two_back) +{ + int dispose; + int first_frame; + int pi; + int pcount; + STBI_NOTUSED(req_comp); + + // on first frame, any non-written pixels get the background colour (non-transparent) + first_frame = 0; + if (g->out == 0) { + if (!stbi__gif_header(s, g, comp,0)) return 0; // stbi__g_failure_reason set by stbi__gif_header + if (!stbi__mad3sizes_valid(4, g->w, g->h, 0)) + return stbi__errpuc("too large", "GIF image is too large"); + pcount = g->w * g->h; + g->out = (stbi_uc *) stbi__malloc(4 * pcount); + g->background = (stbi_uc *) stbi__malloc(4 * pcount); + g->history = (stbi_uc *) stbi__malloc(pcount); + if (!g->out || !g->background || !g->history) + return stbi__errpuc("outofmem", "Out of memory"); + + // image is treated as "transparent" at the start - ie, nothing overwrites the current background; + // background colour is only used for pixels that are not rendered first frame, after that "background" + // color refers to the color that was there the previous frame. + memset(g->out, 0x00, 4 * pcount); + memset(g->background, 0x00, 4 * pcount); // state of the background (starts transparent) + memset(g->history, 0x00, pcount); // pixels that were affected previous frame + first_frame = 1; + } else { + // second frame - how do we dispose of the previous one? + dispose = (g->eflags & 0x1C) >> 2; + pcount = g->w * g->h; + + if ((dispose == 3) && (two_back == 0)) { + dispose = 2; // if I don't have an image to revert back to, default to the old background + } + + if (dispose == 3) { // use previous graphic + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi]) { + memcpy( &g->out[pi * 4], &two_back[pi * 4], 4 ); + } + } + } else if (dispose == 2) { + // restore what was changed last frame to background before that frame; + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi]) { + memcpy( &g->out[pi * 4], &g->background[pi * 4], 4 ); + } + } + } else { + // This is a non-disposal case eithe way, so just + // leave the pixels as is, and they will become the new background + // 1: do not dispose + // 0: not specified. + } + + // background is what out is after the undoing of the previou frame; + memcpy( g->background, g->out, 4 * g->w * g->h ); + } + + // clear my history; + memset( g->history, 0x00, g->w * g->h ); // pixels that were affected previous frame + + for (;;) { + int tag = stbi__get8(s); + switch (tag) { + case 0x2C: /* Image Descriptor */ + { + stbi__int32 x, y, w, h; + stbi_uc *o; + + x = stbi__get16le(s); + y = stbi__get16le(s); + w = stbi__get16le(s); + h = stbi__get16le(s); + if (((x + w) > (g->w)) || ((y + h) > (g->h))) + return stbi__errpuc("bad Image Descriptor", "Corrupt GIF"); + + g->line_size = g->w * 4; + g->start_x = x * 4; + g->start_y = y * g->line_size; + g->max_x = g->start_x + w * 4; + g->max_y = g->start_y + h * g->line_size; + g->cur_x = g->start_x; + g->cur_y = g->start_y; + + // if the width of the specified rectangle is 0, that means + // we may not see *any* pixels or the image is malformed; + // to make sure this is caught, move the current y down to + // max_y (which is what out_gif_code checks). + if (w == 0) + g->cur_y = g->max_y; + + g->lflags = stbi__get8(s); + + if (g->lflags & 0x40) { + g->step = 8 * g->line_size; // first interlaced spacing + g->parse = 3; + } else { + g->step = g->line_size; + g->parse = 0; + } + + if (g->lflags & 0x80) { + stbi__gif_parse_colortable(s,g->lpal, 2 << (g->lflags & 7), g->eflags & 0x01 ? g->transparent : -1); + g->color_table = (stbi_uc *) g->lpal; + } else if (g->flags & 0x80) { + g->color_table = (stbi_uc *) g->pal; + } else + return stbi__errpuc("missing color table", "Corrupt GIF"); + + o = stbi__process_gif_raster(s, g); + if (!o) return NULL; + + // if this was the first frame, + pcount = g->w * g->h; + if (first_frame && (g->bgindex > 0)) { + // if first frame, any pixel not drawn to gets the background color + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi] == 0) { + g->pal[g->bgindex][3] = 255; // just in case it was made transparent, undo that; It will be reset next frame if need be; + memcpy( &g->out[pi * 4], &g->pal[g->bgindex], 4 ); + } + } + } + + return o; + } + + case 0x21: // Comment Extension. + { + int len; + int ext = stbi__get8(s); + if (ext == 0xF9) { // Graphic Control Extension. + len = stbi__get8(s); + if (len == 4) { + g->eflags = stbi__get8(s); + g->delay = 10 * stbi__get16le(s); // delay - 1/100th of a second, saving as 1/1000ths. + + // unset old transparent + if (g->transparent >= 0) { + g->pal[g->transparent][3] = 255; + } + if (g->eflags & 0x01) { + g->transparent = stbi__get8(s); + if (g->transparent >= 0) { + g->pal[g->transparent][3] = 0; + } + } else { + // don't need transparent + stbi__skip(s, 1); + g->transparent = -1; + } + } else { + stbi__skip(s, len); + break; + } + } + while ((len = stbi__get8(s)) != 0) { + stbi__skip(s, len); + } + break; + } + + case 0x3B: // gif stream termination code + return (stbi_uc *) s; // using '1' causes warning on some compilers + + default: + return stbi__errpuc("unknown code", "Corrupt GIF"); + } + } +} + +static void *stbi__load_gif_main_outofmem(stbi__gif *g, stbi_uc *out, int **delays) +{ + STBI_FREE(g->out); + STBI_FREE(g->history); + STBI_FREE(g->background); + + if (out) STBI_FREE(out); + if (delays && *delays) STBI_FREE(*delays); + return stbi__errpuc("outofmem", "Out of memory"); +} + +static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y, int *z, int *comp, int req_comp) +{ + if (stbi__gif_test(s)) { + int layers = 0; + stbi_uc *u = 0; + stbi_uc *out = 0; + stbi_uc *two_back = 0; + stbi__gif g; + int stride; + int out_size = 0; + int delays_size = 0; + + STBI_NOTUSED(out_size); + STBI_NOTUSED(delays_size); + + memset(&g, 0, sizeof(g)); + if (delays) { + *delays = 0; + } + + do { + u = stbi__gif_load_next(s, &g, comp, req_comp, two_back); + if (u == (stbi_uc *) s) u = 0; // end of animated gif marker + + if (u) { + *x = g.w; + *y = g.h; + ++layers; + stride = g.w * g.h * 4; + + if (out) { + void *tmp = (stbi_uc*) STBI_REALLOC_SIZED( out, out_size, layers * stride ); + if (!tmp) + return stbi__load_gif_main_outofmem(&g, out, delays); + else { + out = (stbi_uc*) tmp; + out_size = layers * stride; + } + + if (delays) { + int *new_delays = (int*) STBI_REALLOC_SIZED( *delays, delays_size, sizeof(int) * layers ); + if (!new_delays) + return stbi__load_gif_main_outofmem(&g, out, delays); + *delays = new_delays; + delays_size = layers * sizeof(int); + } + } else { + out = (stbi_uc*)stbi__malloc( layers * stride ); + if (!out) + return stbi__load_gif_main_outofmem(&g, out, delays); + out_size = layers * stride; + if (delays) { + *delays = (int*) stbi__malloc( layers * sizeof(int) ); + if (!*delays) + return stbi__load_gif_main_outofmem(&g, out, delays); + delays_size = layers * sizeof(int); + } + } + memcpy( out + ((layers - 1) * stride), u, stride ); + if (layers >= 2) { + two_back = out - 2 * stride; + } + + if (delays) { + (*delays)[layers - 1U] = g.delay; + } + } + } while (u != 0); + + // free temp buffer; + STBI_FREE(g.out); + STBI_FREE(g.history); + STBI_FREE(g.background); + + // do the final conversion after loading everything; + if (req_comp && req_comp != 4) + out = stbi__convert_format(out, 4, req_comp, layers * g.w, g.h); + + *z = layers; + return out; + } else { + return stbi__errpuc("not GIF", "Image was not as a gif type."); + } +} + +static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *u = 0; + stbi__gif g; + memset(&g, 0, sizeof(g)); + STBI_NOTUSED(ri); + + u = stbi__gif_load_next(s, &g, comp, req_comp, 0); + if (u == (stbi_uc *) s) u = 0; // end of animated gif marker + if (u) { + *x = g.w; + *y = g.h; + + // moved conversion to after successful load so that the same + // can be done for multiple frames. + if (req_comp && req_comp != 4) + u = stbi__convert_format(u, 4, req_comp, g.w, g.h); + } else if (g.out) { + // if there was an error and we allocated an image buffer, free it! + STBI_FREE(g.out); + } + + // free buffers needed for multiple frame loading; + STBI_FREE(g.history); + STBI_FREE(g.background); + + return u; +} + +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp) +{ + return stbi__gif_info_raw(s,x,y,comp); +} +#endif + +// ************************************************************************************************* +// Radiance RGBE HDR loader +// originally by Nicolas Schulz +#ifndef STBI_NO_HDR +static int stbi__hdr_test_core(stbi__context *s, const char *signature) +{ + int i; + for (i=0; signature[i]; ++i) + if (stbi__get8(s) != signature[i]) + return 0; + stbi__rewind(s); + return 1; +} + +static int stbi__hdr_test(stbi__context* s) +{ + int r = stbi__hdr_test_core(s, "#?RADIANCE\n"); + stbi__rewind(s); + if(!r) { + r = stbi__hdr_test_core(s, "#?RGBE\n"); + stbi__rewind(s); + } + return r; +} + +#define STBI__HDR_BUFLEN 1024 +static char *stbi__hdr_gettoken(stbi__context *z, char *buffer) +{ + int len=0; + char c = '\0'; + + c = (char) stbi__get8(z); + + while (!stbi__at_eof(z) && c != '\n') { + buffer[len++] = c; + if (len == STBI__HDR_BUFLEN-1) { + // flush to end of line + while (!stbi__at_eof(z) && stbi__get8(z) != '\n') + ; + break; + } + c = (char) stbi__get8(z); + } + + buffer[len] = 0; + return buffer; +} + +static void stbi__hdr_convert(float *output, stbi_uc *input, int req_comp) +{ + if ( input[3] != 0 ) { + float f1; + // Exponent + f1 = (float) ldexp(1.0f, input[3] - (int)(128 + 8)); + if (req_comp <= 2) + output[0] = (input[0] + input[1] + input[2]) * f1 / 3; + else { + output[0] = input[0] * f1; + output[1] = input[1] * f1; + output[2] = input[2] * f1; + } + if (req_comp == 2) output[1] = 1; + if (req_comp == 4) output[3] = 1; + } else { + switch (req_comp) { + case 4: output[3] = 1; /* fallthrough */ + case 3: output[0] = output[1] = output[2] = 0; + break; + case 2: output[1] = 1; /* fallthrough */ + case 1: output[0] = 0; + break; + } + } +} + +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + int width, height; + stbi_uc *scanline; + float *hdr_data; + int len; + unsigned char count, value; + int i, j, k, c1,c2, z; + const char *headerToken; + STBI_NOTUSED(ri); + + // Check identifier + headerToken = stbi__hdr_gettoken(s,buffer); + if (strcmp(headerToken, "#?RADIANCE") != 0 && strcmp(headerToken, "#?RGBE") != 0) + return stbi__errpf("not HDR", "Corrupt HDR image"); + + // Parse header + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) return stbi__errpf("unsupported format", "Unsupported HDR format"); + + // Parse width and height + // can't use sscanf() if we're not using stdio! + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + height = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + width = (int) strtol(token, NULL, 10); + + if (height > STBI_MAX_DIMENSIONS) return stbi__errpf("too large","Very large image (corrupt?)"); + if (width > STBI_MAX_DIMENSIONS) return stbi__errpf("too large","Very large image (corrupt?)"); + + *x = width; + *y = height; + + if (comp) *comp = 3; + if (req_comp == 0) req_comp = 3; + + if (!stbi__mad4sizes_valid(width, height, req_comp, sizeof(float), 0)) + return stbi__errpf("too large", "HDR image is too large"); + + // Read data + hdr_data = (float *) stbi__malloc_mad4(width, height, req_comp, sizeof(float), 0); + if (!hdr_data) + return stbi__errpf("outofmem", "Out of memory"); + + // Load image data + // image data is stored as some number of sca + if ( width < 8 || width >= 32768) { + // Read flat data + for (j=0; j < height; ++j) { + for (i=0; i < width; ++i) { + stbi_uc rgbe[4]; + main_decode_loop: + stbi__getn(s, rgbe, 4); + stbi__hdr_convert(hdr_data + j * width * req_comp + i * req_comp, rgbe, req_comp); + } + } + } else { + // Read RLE-encoded data + scanline = NULL; + + for (j = 0; j < height; ++j) { + c1 = stbi__get8(s); + c2 = stbi__get8(s); + len = stbi__get8(s); + if (c1 != 2 || c2 != 2 || (len & 0x80)) { + // not run-length encoded, so we have to actually use THIS data as a decoded + // pixel (note this can't be a valid pixel--one of RGB must be >= 128) + stbi_uc rgbe[4]; + rgbe[0] = (stbi_uc) c1; + rgbe[1] = (stbi_uc) c2; + rgbe[2] = (stbi_uc) len; + rgbe[3] = (stbi_uc) stbi__get8(s); + stbi__hdr_convert(hdr_data, rgbe, req_comp); + i = 1; + j = 0; + STBI_FREE(scanline); + goto main_decode_loop; // yes, this makes no sense + } + len <<= 8; + len |= stbi__get8(s); + if (len != width) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("invalid decoded scanline length", "corrupt HDR"); } + if (scanline == NULL) { + scanline = (stbi_uc *) stbi__malloc_mad2(width, 4, 0); + if (!scanline) { + STBI_FREE(hdr_data); + return stbi__errpf("outofmem", "Out of memory"); + } + } + + for (k = 0; k < 4; ++k) { + int nleft; + i = 0; + while ((nleft = width - i) > 0) { + count = stbi__get8(s); + if (count > 128) { + // Run + value = stbi__get8(s); + count -= 128; + if ((count == 0) || (count > nleft)) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = value; + } else { + // Dump + if ((count == 0) || (count > nleft)) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = stbi__get8(s); + } + } + } + for (i=0; i < width; ++i) + stbi__hdr_convert(hdr_data+(j*width + i)*req_comp, scanline + i*4, req_comp); + } + if (scanline) + STBI_FREE(scanline); + } + + return hdr_data; +} + +static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + int dummy; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + if (stbi__hdr_test(s) == 0) { + stbi__rewind( s ); + return 0; + } + + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) { + stbi__rewind( s ); + return 0; + } + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *y = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *x = (int) strtol(token, NULL, 10); + *comp = 3; + return 1; +} +#endif // STBI_NO_HDR + +#ifndef STBI_NO_BMP +static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp) +{ + void *p; + stbi__bmp_data info; + + info.all_a = 255; + p = stbi__bmp_parse_header(s, &info); + if (p == NULL) { + stbi__rewind( s ); + return 0; + } + if (x) *x = s->img_x; + if (y) *y = s->img_y; + if (comp) { + if (info.bpp == 24 && info.ma == 0xff000000) + *comp = 3; + else + *comp = info.ma ? 4 : 3; + } + return 1; +} +#endif + +#ifndef STBI_NO_PSD +static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp) +{ + int channelCount, dummy, depth; + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + if (stbi__get32be(s) != 0x38425053) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 1) { + stbi__rewind( s ); + return 0; + } + stbi__skip(s, 6); + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) { + stbi__rewind( s ); + return 0; + } + *y = stbi__get32be(s); + *x = stbi__get32be(s); + depth = stbi__get16be(s); + if (depth != 8 && depth != 16) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 3) { + stbi__rewind( s ); + return 0; + } + *comp = 4; + return 1; +} + +static int stbi__psd_is16(stbi__context *s) +{ + int channelCount, depth; + if (stbi__get32be(s) != 0x38425053) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 1) { + stbi__rewind( s ); + return 0; + } + stbi__skip(s, 6); + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) { + stbi__rewind( s ); + return 0; + } + STBI_NOTUSED(stbi__get32be(s)); + STBI_NOTUSED(stbi__get32be(s)); + depth = stbi__get16be(s); + if (depth != 16) { + stbi__rewind( s ); + return 0; + } + return 1; +} +#endif + +#ifndef STBI_NO_PIC +static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp) +{ + int act_comp=0,num_packets=0,chained,dummy; + stbi__pic_packet packets[10]; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) { + stbi__rewind(s); + return 0; + } + + stbi__skip(s, 88); + + *x = stbi__get16be(s); + *y = stbi__get16be(s); + if (stbi__at_eof(s)) { + stbi__rewind( s); + return 0; + } + if ( (*x) != 0 && (1 << 28) / (*x) < (*y)) { + stbi__rewind( s ); + return 0; + } + + stbi__skip(s, 8); + + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return 0; + + packet = &packets[num_packets++]; + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + act_comp |= packet->channel; + + if (stbi__at_eof(s)) { + stbi__rewind( s ); + return 0; + } + if (packet->size != 8) { + stbi__rewind( s ); + return 0; + } + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); + + return 1; +} +#endif + +// ************************************************************************************************* +// Portable Gray Map and Portable Pixel Map loader +// by Ken Miller +// +// PGM: http://netpbm.sourceforge.net/doc/pgm.html +// PPM: http://netpbm.sourceforge.net/doc/ppm.html +// +// Known limitations: +// Does not support comments in the header section +// Does not support ASCII image data (formats P2 and P3) + +#ifndef STBI_NO_PNM + +static int stbi__pnm_test(stbi__context *s) +{ + char p, t; + p = (char) stbi__get8(s); + t = (char) stbi__get8(s); + if (p != 'P' || (t != '5' && t != '6')) { + stbi__rewind( s ); + return 0; + } + return 1; +} + +static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *out; + STBI_NOTUSED(ri); + + ri->bits_per_channel = stbi__pnm_info(s, (int *)&s->img_x, (int *)&s->img_y, (int *)&s->img_n); + if (ri->bits_per_channel == 0) + return 0; + + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + *x = s->img_x; + *y = s->img_y; + if (comp) *comp = s->img_n; + + if (!stbi__mad4sizes_valid(s->img_n, s->img_x, s->img_y, ri->bits_per_channel / 8, 0)) + return stbi__errpuc("too large", "PNM too large"); + + out = (stbi_uc *) stbi__malloc_mad4(s->img_n, s->img_x, s->img_y, ri->bits_per_channel / 8, 0); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + if (!stbi__getn(s, out, s->img_n * s->img_x * s->img_y * (ri->bits_per_channel / 8))) { + STBI_FREE(out); + return stbi__errpuc("bad PNM", "PNM file truncated"); + } + + if (req_comp && req_comp != s->img_n) { + if (ri->bits_per_channel == 16) { + out = (stbi_uc *) stbi__convert_format16((stbi__uint16 *) out, s->img_n, req_comp, s->img_x, s->img_y); + } else { + out = stbi__convert_format(out, s->img_n, req_comp, s->img_x, s->img_y); + } + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + return out; +} + +static int stbi__pnm_isspace(char c) +{ + return c == ' ' || c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r'; +} + +static void stbi__pnm_skip_whitespace(stbi__context *s, char *c) +{ + for (;;) { + while (!stbi__at_eof(s) && stbi__pnm_isspace(*c)) + *c = (char) stbi__get8(s); + + if (stbi__at_eof(s) || *c != '#') + break; + + while (!stbi__at_eof(s) && *c != '\n' && *c != '\r' ) + *c = (char) stbi__get8(s); + } +} + +static int stbi__pnm_isdigit(char c) +{ + return c >= '0' && c <= '9'; +} + +static int stbi__pnm_getinteger(stbi__context *s, char *c) +{ + int value = 0; + + while (!stbi__at_eof(s) && stbi__pnm_isdigit(*c)) { + value = value*10 + (*c - '0'); + *c = (char) stbi__get8(s); + if((value > 214748364) || (value == 214748364 && *c > '7')) + return stbi__err("integer parse overflow", "Parsing an integer in the PPM header overflowed a 32-bit int"); + } + + return value; +} + +static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp) +{ + int maxv, dummy; + char c, p, t; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + stbi__rewind(s); + + // Get identifier + p = (char) stbi__get8(s); + t = (char) stbi__get8(s); + if (p != 'P' || (t != '5' && t != '6')) { + stbi__rewind(s); + return 0; + } + + *comp = (t == '6') ? 3 : 1; // '5' is 1-component .pgm; '6' is 3-component .ppm + + c = (char) stbi__get8(s); + stbi__pnm_skip_whitespace(s, &c); + + *x = stbi__pnm_getinteger(s, &c); // read width + if(*x == 0) + return stbi__err("invalid width", "PPM image header had zero or overflowing width"); + stbi__pnm_skip_whitespace(s, &c); + + *y = stbi__pnm_getinteger(s, &c); // read height + if (*y == 0) + return stbi__err("invalid width", "PPM image header had zero or overflowing width"); + stbi__pnm_skip_whitespace(s, &c); + + maxv = stbi__pnm_getinteger(s, &c); // read max value + if (maxv > 65535) + return stbi__err("max value > 65535", "PPM image supports only 8-bit and 16-bit images"); + else if (maxv > 255) + return 16; + else + return 8; +} + +static int stbi__pnm_is16(stbi__context *s) +{ + if (stbi__pnm_info(s, NULL, NULL, NULL) == 16) + return 1; + return 0; +} +#endif + +static int stbi__info_main(stbi__context *s, int *x, int *y, int *comp) +{ + #ifndef STBI_NO_JPEG + if (stbi__jpeg_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PNG + if (stbi__png_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_GIF + if (stbi__gif_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_BMP + if (stbi__bmp_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PSD + if (stbi__psd_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PIC + if (stbi__pic_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PNM + if (stbi__pnm_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_HDR + if (stbi__hdr_info(s, x, y, comp)) return 1; + #endif + + // test tga last because it's a crappy test! + #ifndef STBI_NO_TGA + if (stbi__tga_info(s, x, y, comp)) + return 1; + #endif + return stbi__err("unknown image type", "Image not of any known type, or corrupt"); +} + +static int stbi__is_16_main(stbi__context *s) +{ + #ifndef STBI_NO_PNG + if (stbi__png_is16(s)) return 1; + #endif + + #ifndef STBI_NO_PSD + if (stbi__psd_is16(s)) return 1; + #endif + + #ifndef STBI_NO_PNM + if (stbi__pnm_is16(s)) return 1; + #endif + return 0; +} + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_info(char const *filename, int *x, int *y, int *comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result; + if (!f) return stbi__err("can't fopen", "Unable to open file"); + result = stbi_info_from_file(f, x, y, comp); + fclose(f); + return result; +} + +STBIDEF int stbi_info_from_file(FILE *f, int *x, int *y, int *comp) +{ + int r; + stbi__context s; + long pos = ftell(f); + stbi__start_file(&s, f); + r = stbi__info_main(&s,x,y,comp); + fseek(f,pos,SEEK_SET); + return r; +} + +STBIDEF int stbi_is_16_bit(char const *filename) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result; + if (!f) return stbi__err("can't fopen", "Unable to open file"); + result = stbi_is_16_bit_from_file(f); + fclose(f); + return result; +} + +STBIDEF int stbi_is_16_bit_from_file(FILE *f) +{ + int r; + stbi__context s; + long pos = ftell(f); + stbi__start_file(&s, f); + r = stbi__is_16_main(&s); + fseek(f,pos,SEEK_SET); + return r; +} +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__info_main(&s,x,y,comp); +} + +STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int *x, int *y, int *comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); + return stbi__info_main(&s,x,y,comp); +} + +STBIDEF int stbi_is_16_bit_from_memory(stbi_uc const *buffer, int len) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__is_16_main(&s); +} + +STBIDEF int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const *c, void *user) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); + return stbi__is_16_main(&s); +} + +#endif // STB_IMAGE_IMPLEMENTATION + +/* + revision history: + 2.20 (2019-02-07) support utf8 filenames in Windows; fix warnings and platform ifdefs + 2.19 (2018-02-11) fix warning + 2.18 (2018-01-30) fix warnings + 2.17 (2018-01-29) change sbti__shiftsigned to avoid clang -O2 bug + 1-bit BMP + *_is_16_bit api + avoid warnings + 2.16 (2017-07-23) all functions have 16-bit variants; + STBI_NO_STDIO works again; + compilation fixes; + fix rounding in unpremultiply; + optimize vertical flip; + disable raw_len validation; + documentation fixes + 2.15 (2017-03-18) fix png-1,2,4 bug; now all Imagenet JPGs decode; + warning fixes; disable run-time SSE detection on gcc; + uniform handling of optional "return" values; + thread-safe initialization of zlib tables + 2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs + 2.13 (2016-11-29) add 16-bit API, only supported for PNG right now + 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes + 2.11 (2016-04-02) allocate large structures on the stack + remove white matting for transparent PSD + fix reported channel count for PNG & BMP + re-enable SSE2 in non-gcc 64-bit + support RGB-formatted JPEG + read 16-bit PNGs (only as 8-bit) + 2.10 (2016-01-22) avoid warning introduced in 2.09 by STBI_REALLOC_SIZED + 2.09 (2016-01-16) allow comments in PNM files + 16-bit-per-pixel TGA (not bit-per-component) + info() for TGA could break due to .hdr handling + info() for BMP to shares code instead of sloppy parse + can use STBI_REALLOC_SIZED if allocator doesn't support realloc + code cleanup + 2.08 (2015-09-13) fix to 2.07 cleanup, reading RGB PSD as RGBA + 2.07 (2015-09-13) fix compiler warnings + partial animated GIF support + limited 16-bpc PSD support + #ifdef unused functions + bug with < 92 byte PIC,PNM,HDR,TGA + 2.06 (2015-04-19) fix bug where PSD returns wrong '*comp' value + 2.05 (2015-04-19) fix bug in progressive JPEG handling, fix warning + 2.04 (2015-04-15) try to re-enable SIMD on MinGW 64-bit + 2.03 (2015-04-12) extra corruption checking (mmozeiko) + stbi_set_flip_vertically_on_load (nguillemot) + fix NEON support; fix mingw support + 2.02 (2015-01-19) fix incorrect assert, fix warning + 2.01 (2015-01-17) fix various warnings; suppress SIMD on gcc 32-bit without -msse2 + 2.00b (2014-12-25) fix STBI_MALLOC in progressive JPEG + 2.00 (2014-12-25) optimize JPG, including x86 SSE2 & NEON SIMD (ryg) + progressive JPEG (stb) + PGM/PPM support (Ken Miller) + STBI_MALLOC,STBI_REALLOC,STBI_FREE + GIF bugfix -- seemingly never worked + STBI_NO_*, STBI_ONLY_* + 1.48 (2014-12-14) fix incorrectly-named assert() + 1.47 (2014-12-14) 1/2/4-bit PNG support, both direct and paletted (Omar Cornut & stb) + optimize PNG (ryg) + fix bug in interlaced PNG with user-specified channel count (stb) + 1.46 (2014-08-26) + fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG + 1.45 (2014-08-16) + fix MSVC-ARM internal compiler error by wrapping malloc + 1.44 (2014-08-07) + various warning fixes from Ronny Chevalier + 1.43 (2014-07-15) + fix MSVC-only compiler problem in code changed in 1.42 + 1.42 (2014-07-09) + don't define _CRT_SECURE_NO_WARNINGS (affects user code) + fixes to stbi__cleanup_jpeg path + added STBI_ASSERT to avoid requiring assert.h + 1.41 (2014-06-25) + fix search&replace from 1.36 that messed up comments/error messages + 1.40 (2014-06-22) + fix gcc struct-initialization warning + 1.39 (2014-06-15) + fix to TGA optimization when req_comp != number of components in TGA; + fix to GIF loading because BMP wasn't rewinding (whoops, no GIFs in my test suite) + add support for BMP version 5 (more ignored fields) + 1.38 (2014-06-06) + suppress MSVC warnings on integer casts truncating values + fix accidental rename of 'skip' field of I/O + 1.37 (2014-06-04) + remove duplicate typedef + 1.36 (2014-06-03) + convert to header file single-file library + if de-iphone isn't set, load iphone images color-swapped instead of returning NULL + 1.35 (2014-05-27) + various warnings + fix broken STBI_SIMD path + fix bug where stbi_load_from_file no longer left file pointer in correct place + fix broken non-easy path for 32-bit BMP (possibly never used) + TGA optimization by Arseny Kapoulkine + 1.34 (unknown) + use STBI_NOTUSED in stbi__resample_row_generic(), fix one more leak in tga failure case + 1.33 (2011-07-14) + make stbi_is_hdr work in STBI_NO_HDR (as specified), minor compiler-friendly improvements + 1.32 (2011-07-13) + support for "info" function for all supported filetypes (SpartanJ) + 1.31 (2011-06-20) + a few more leak fixes, bug in PNG handling (SpartanJ) + 1.30 (2011-06-11) + added ability to load files via callbacks to accomidate custom input streams (Ben Wenger) + removed deprecated format-specific test/load functions + removed support for installable file formats (stbi_loader) -- would have been broken for IO callbacks anyway + error cases in bmp and tga give messages and don't leak (Raymond Barbiero, grisha) + fix inefficiency in decoding 32-bit BMP (David Woo) + 1.29 (2010-08-16) + various warning fixes from Aurelien Pocheville + 1.28 (2010-08-01) + fix bug in GIF palette transparency (SpartanJ) + 1.27 (2010-08-01) + cast-to-stbi_uc to fix warnings + 1.26 (2010-07-24) + fix bug in file buffering for PNG reported by SpartanJ + 1.25 (2010-07-17) + refix trans_data warning (Won Chun) + 1.24 (2010-07-12) + perf improvements reading from files on platforms with lock-heavy fgetc() + minor perf improvements for jpeg + deprecated type-specific functions so we'll get feedback if they're needed + attempt to fix trans_data warning (Won Chun) + 1.23 fixed bug in iPhone support + 1.22 (2010-07-10) + removed image *writing* support + stbi_info support from Jetro Lauha + GIF support from Jean-Marc Lienher + iPhone PNG-extensions from James Brown + warning-fixes from Nicolas Schulz and Janez Zemva (i.stbi__err. Janez (U+017D)emva) + 1.21 fix use of 'stbi_uc' in header (reported by jon blow) + 1.20 added support for Softimage PIC, by Tom Seddon + 1.19 bug in interlaced PNG corruption check (found by ryg) + 1.18 (2008-08-02) + fix a threading bug (local mutable static) + 1.17 support interlaced PNG + 1.16 major bugfix - stbi__convert_format converted one too many pixels + 1.15 initialize some fields for thread safety + 1.14 fix threadsafe conversion bug + header-file-only version (#define STBI_HEADER_FILE_ONLY before including) + 1.13 threadsafe + 1.12 const qualifiers in the API + 1.11 Support installable IDCT, colorspace conversion routines + 1.10 Fixes for 64-bit (don't use "unsigned long") + optimized upsampling by Fabian "ryg" Giesen + 1.09 Fix format-conversion for PSD code (bad global variables!) + 1.08 Thatcher Ulrich's PSD code integrated by Nicolas Schulz + 1.07 attempt to fix C++ warning/errors again + 1.06 attempt to fix C++ warning/errors again + 1.05 fix TGA loading to return correct *comp and use good luminance calc + 1.04 default float alpha is 1, not 255; use 'void *' for stbi_image_free + 1.03 bugfixes to STBI_NO_STDIO, STBI_NO_HDR + 1.02 support for (subset of) HDR files, float interface for preferred access to them + 1.01 fix bug: possible bug in handling right-side up bmps... not sure + fix bug: the stbi__bmp_load() and stbi__tga_load() functions didn't work at all + 1.00 interface to zlib that skips zlib header + 0.99 correct handling of alpha in palette + 0.98 TGA loader by lonesock; dynamically add loaders (untested) + 0.97 jpeg errors on too large a file; also catch another malloc failure + 0.96 fix detection of invalid v value - particleman@mollyrocket forum + 0.95 during header scan, seek to markers in case of padding + 0.94 STBI_NO_STDIO to disable stdio usage; rename all #defines the same + 0.93 handle jpegtran output; verbose errors + 0.92 read 4,8,16,24,32-bit BMP files of several formats + 0.91 output 24-bit Windows 3.0 BMP files + 0.90 fix a few more warnings; bump version number to approach 1.0 + 0.61 bugfixes due to Marc LeBlanc, Christopher Lloyd + 0.60 fix compiling as c++ + 0.59 fix warnings: merge Dave Moore's -Wall fixes + 0.58 fix bug: zlib uncompressed mode len/nlen was wrong endian + 0.57 fix bug: jpg last huffman symbol before marker was >9 bits but less than 16 available + 0.56 fix bug: zlib uncompressed mode len vs. nlen + 0.55 fix bug: restart_interval not initialized to 0 + 0.54 allow NULL for 'int *comp' + 0.53 fix bug in png 3->4; speedup png decoding + 0.52 png handles req_comp=3,4 directly; minor cleanup; jpeg comments + 0.51 obey req_comp requests, 1-component jpegs return as 1-component, + on 'test' only check type, not whether we support this variant + 0.50 (2006-11-19) + first released version +*/ + + +/* +------------------------------------------------------------------------------ +This software is available under 2 licenses -- choose whichever you prefer. +------------------------------------------------------------------------------ +ALTERNATIVE A - MIT License +Copyright (c) 2017 Sean Barrett +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +------------------------------------------------------------------------------ +ALTERNATIVE B - Public Domain (www.unlicense.org) +This is free and unencumbered software released into the public domain. +Anyone is free to copy, modify, publish, use, compile, sell, or distribute this +software, either in source code form or as a compiled binary, for any purpose, +commercial or non-commercial, and by any means. +In jurisdictions that recognize copyright laws, the author or authors of this +software dedicate any and all copyright interest in the software to the public +domain. We make this dedication for the benefit of the public at large and to +the detriment of our heirs and successors. We intend this dedication to be an +overt act of relinquishment in perpetuity of all present and future rights to +this software under copyright law. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +------------------------------------------------------------------------------ +*/ diff --git a/vendor/stb/stb_image_impl.c b/vendor/stb/stb_image_impl.c new file mode 100644 index 0000000..8ddfd1f --- /dev/null +++ b/vendor/stb/stb_image_impl.c @@ -0,0 +1,2 @@ +#define STB_IMAGE_IMPLEMENTATION +#include "stb_image.h"