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@@ -22,7 +22,7 @@ import (
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// FS WebUI嵌入静态文件
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//
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//go:embed index.html ofdgo.css ofdgo.js ofdgo.json ofdgo.svg ofdgo.sw.js ofdgo.wasm wasm_exec.js
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//go:embed index.html ofdgo.css ofdgo.js ofdgo.json ofdgo.svg ofdgo.sw.js ofdgo.wasm ofdgo.wasm.js wasm_exec.js
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var FS embed.FS
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// Checksum 计算WebUI嵌入资源校验值
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@@ -152,7 +152,6 @@
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</footer>
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</div>
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<script src="./wasm_exec.js"></script>
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<script type="module" src="./ofdgo.js"></script>
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</body>
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</html>
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+125
-154
@@ -13,19 +13,11 @@ const STATUS = {
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exporting: "正在导出文档",
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pageExporting: "正在导出单页",
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};
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const WASM_CALLBACKS = [
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"ofdgoOpen",
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"ofdgoConfigure",
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"ofdgoDocumentInfo",
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"ofdgoRenderPage",
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"ofdgoExportFormats",
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"ofdgoExportPage",
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"ofdgoExportPDF",
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"ofdgoFontFileMatches",
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];
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const wasmRequests = new Map();
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let wasmPromise = null;
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let wasmModule = null;
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let wasmWorker = null;
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let wasmRequestID = 0;
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let wasmRecoveryTimer = 0;
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let fontDatabase = null;
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@@ -35,9 +27,11 @@ const state = {
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wasmSeq: 0,
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wasmRecovering: false,
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wasmRecoveries: 0,
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exporting: false,
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ofdBytes: null,
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fileName: "ofdgo.ofd",
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openSeq: 0,
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pageSeq: 0,
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fontSeq: 0,
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localFonts: [],
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userFonts: [],
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@@ -275,7 +269,7 @@ async function boot() {
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fontsRestored = false;
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}
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setProgress("引擎准备完成", 70);
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loadExportFormats();
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await loadExportFormats();
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setEmpty("选择 OFD 文件");
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updateFontSummary();
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renderFontList();
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@@ -419,8 +413,8 @@ async function refreshApplication() {
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}
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}
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function loadExportFormats() {
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const formats = callWASM("ofdgoExportFormats") || [];
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async function loadExportFormats() {
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const formats = await callWASM("ofdgoExportFormats") || [];
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state.exportFormats = formats;
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el.pageExportFormat.replaceChildren();
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for (const format of formats) {
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@@ -448,47 +442,41 @@ async function ensureWASM() {
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}
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async function loadWASM() {
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if (!globalThis.Go) {
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throw new Error("渲染引擎脚本缺失");
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}
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const wasmSeq = state.wasmSeq + 1;
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state.wasmSeq = wasmSeq;
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state.ready = false;
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state.wasmExited = false;
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clearWASMCallbacks();
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const go = new Go();
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if (!wasmModule) {
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setProgress("正在下载引擎", 16);
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const response = await fetch("./ofdgo.wasm");
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try {
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setProgress("正在编译引擎", 35);
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wasmModule = await WebAssembly.compileStreaming(response);
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} catch {
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const fallback = await fetch("./ofdgo.wasm");
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const bytes = await fallback.arrayBuffer();
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setProgress("正在编译引擎", 45);
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wasmModule = await WebAssembly.compile(bytes);
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}
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}
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setProgress("正在启动引擎", 58);
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const instance = await WebAssembly.instantiate(wasmModule, go.importObject);
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go.run(instance).then(() => {
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markWASMExited(wasmSeq);
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}).catch((err) => {
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markWASMExited(wasmSeq, err);
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await new Promise((resolve, reject) => {
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const worker = new Worker("./ofdgo.wasm.js");
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wasmWorker = worker;
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const fail = (err) => {
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markWASMExited(wasmSeq, err);
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reject(err);
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};
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worker.onerror = (event) => fail(new Error(event.message || "渲染引擎加载失败"));
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worker.onmessageerror = () => fail(new Error("渲染引擎通信失败"));
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worker.onmessage = ({ data }) => {
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if (worker !== wasmWorker) {
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return;
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}
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if (data.type === "progress") {
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setProgress(data.text, data.percent);
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} else if (data.type === "ready") {
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state.ready = true;
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resolve();
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} else if (data.type === "exit") {
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fail(new Error(data.error));
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} else {
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const request = wasmRequests.get(data.id);
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wasmRequests.delete(data.id);
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if (data.ok) {
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request.resolve(data.data);
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} else {
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request.reject(new Error(data.error));
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}
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}
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};
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});
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await waitFor(() => WASM_CALLBACKS.every((name) => typeof globalThis[name] === "function"));
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if (wasmSeq !== state.wasmSeq) {
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return;
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}
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state.ready = true;
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state.wasmExited = false;
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}
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function clearWASMCallbacks() {
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for (const name of WASM_CALLBACKS) {
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globalThis[name] = undefined;
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}
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}
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function markWASMExited(wasmSeq = state.wasmSeq, err) {
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@@ -497,6 +485,12 @@ function markWASMExited(wasmSeq = state.wasmSeq, err) {
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}
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state.ready = false;
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state.wasmExited = true;
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wasmWorker?.terminate();
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wasmWorker = null;
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for (const request of wasmRequests.values()) {
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request.reject(err || new Error("渲染引擎已退出"));
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}
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wasmRequests.clear();
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if (err) {
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setStatus("渲染引擎异常，正在恢复");
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}
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@@ -517,43 +511,28 @@ async function recoverWASM() {
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}
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state.wasmRecovering = true;
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state.wasmRecoveries += 1;
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const pageIndex = state.pageIndex;
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const fitMode = state.fitMode || "width";
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const openSeq = ++state.openSeq;
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setBusy(true, "正在恢复引擎", 18, STATUS.recovering);
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try {
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await ensureWASM();
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await openDocument({
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pageIndex,
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fitMode,
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pageIndex: state.pageIndex,
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fitMode: state.fitMode || "width",
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scale: state.scale,
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skipAutoFonts: true,
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openSeq,
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});
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} catch (err) {
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showError(err, !state.doc);
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if (openSeq === state.openSeq) {
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showError(err, !state.doc);
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}
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} finally {
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state.wasmRecovering = false;
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if (!state.doc) {
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if (openSeq === state.openSeq) {
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setBusy(false);
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}
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}
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}
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function waitFor(predicate) {
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return new Promise((resolve, reject) => {
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const started = performance.now();
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const timer = window.setInterval(() => {
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if (predicate()) {
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window.clearInterval(timer);
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resolve();
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return;
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}
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if (performance.now() - started > 5000) {
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window.clearInterval(timer);
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reject(new Error("渲染引擎初始化超时"));
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}
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}, 20);
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});
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}
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async function openOFD(file) {
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if (!file) {
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return;
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@@ -564,14 +543,21 @@ async function openOFD(file) {
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return;
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}
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state.wasmRecoveries = 0;
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const openSeq = ++state.openSeq;
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setBusy(true, "正在读取 OFD", 10, STATUS.opening);
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try {
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state.ofdBytes = new Uint8Array(await file.arrayBuffer());
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const bytes = new Uint8Array(await file.arrayBuffer());
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if (openSeq !== state.openSeq) {
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return;
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}
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state.ofdBytes = bytes;
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state.fileName = file.name || "ofdgo.ofd";
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await openDocument({ pageIndex: 0, resetScroll: true });
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await openDocument({ pageIndex: 0, resetScroll: true, openSeq });
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} catch (err) {
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showError(err, true);
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setBusy(false);
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if (openSeq === state.openSeq) {
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showError(err, true);
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setBusy(false);
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}
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}
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}
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@@ -818,9 +804,12 @@ async function loadDocumentLocalFonts(available, openSeq = state.openSeq) {
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return false;
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}
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const docLoadLimit = Math.min(LOCAL_FONT_LOAD_LIMIT, Math.max(4, docNames.length * 3));
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let selected = selectLocalFonts(available, docNames, docLoadLimit);
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let selected = await selectLocalFonts(available, docNames, docLoadLimit);
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if (!selected.length) {
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selected = selectLocalFonts(available, [], 6);
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selected = await selectLocalFonts(available, [], 6);
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}
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if (openSeq !== state.openSeq) {
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return false;
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}
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const emptyStatus = available.length === 0 ? "未读取到系统字体" : "未匹配到所需字体";
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const fonts = [];
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@@ -860,7 +849,7 @@ function uniqueLocalFonts(fonts) {
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return selected;
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}
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function selectLocalFonts(fonts, names, limit) {
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async function selectLocalFonts(fonts, names, limit) {
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const available = new Map();
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for (const font of uniqueLocalFonts(fonts)) {
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available.set(localFontName(font), font);
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@@ -870,7 +859,7 @@ function selectLocalFonts(fonts, names, limit) {
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}
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}
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}
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const matched = callWASM("ofdgoFontFileMatches", [...available.keys()], names);
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const matched = await callWASM("ofdgoFontFileMatches", [...available.keys()], names);
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return uniqueLocalFonts(matched.map((name) => available.get(name))).slice(0, limit);
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}
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@@ -996,6 +985,9 @@ async function applyFontChange(options = {}) {
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}
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async function toggleAnnotations() {
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if (document.body.hasAttribute("aria-busy")) {
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return;
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}
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state.renderAnnotations = !state.renderAnnotations;
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updateAnnotationButton();
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if (!state.ofdBytes || !state.doc) {
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@@ -1161,10 +1153,13 @@ async function openDocument(options = {}) {
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if (!state.ofdBytes) {
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return;
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}
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const openSeq = options.openSeq || (state.openSeq += 1);
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if (!state.ready || state.wasmExited) {
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await ensureWASM();
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}
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const openSeq = options.openSeq || (state.openSeq += 1);
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if (openSeq !== state.openSeq) {
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return;
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}
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const resetLocalFonts = !options.skipAutoFonts;
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if (resetLocalFonts) {
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state.localFonts = [];
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@@ -1184,8 +1179,8 @@ async function openDocument(options = {}) {
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return;
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}
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const doc = options.reuseSession
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? callWASM("ofdgoConfigure", fonts, state.renderAnnotations)
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: callWASM("ofdgoOpen", state.ofdBytes, fonts, state.renderAnnotations);
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? await callWASM("ofdgoConfigure", fonts, state.renderAnnotations)
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: await callWASM("ofdgoOpen", state.ofdBytes, fonts, state.renderAnnotations);
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if (openSeq !== state.openSeq) {
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return;
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}
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@@ -1251,7 +1246,7 @@ async function loadDocumentDetails(openSeq) {
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return;
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}
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try {
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const info = callWASM("ofdgoDocumentInfo");
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const info = await callWASM("ofdgoDocumentInfo");
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if (openSeq === state.openSeq) {
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Object.assign(state.doc, info, { detailsPending: false });
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renderMeta();
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@@ -1275,10 +1270,13 @@ async function renderPage(index, options = {}) {
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if (index < 0 || index >= pageCount) {
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return;
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}
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if (options.keepBusy) {
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setProgress("正在渲染页面", 76);
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} else {
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setBusy(true, "正在渲染页面", 35, "正在渲染页面");
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const pageSeq = ++state.pageSeq;
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if (!state.exporting) {
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if (options.keepBusy) {
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setProgress("正在渲染页面", 76);
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} else {
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setBusy(true, "正在渲染页面", 35, "正在渲染页面");
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}
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}
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try {
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setCurrentPage(index);
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@@ -1289,7 +1287,7 @@ async function renderPage(index, options = {}) {
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scrollToPage(index);
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}
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await renderFlowPage(index, { throwError: true, openSeq, priority: 0 });
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if (openSeq !== state.openSeq) {
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if (openSeq !== state.openSeq || index !== state.pageIndex) {
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return;
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}
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if (options.scroll !== false) {
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@@ -1301,30 +1299,22 @@ async function renderPage(index, options = {}) {
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showError(err, false);
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}
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} finally {
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if (!options.keepBusy && openSeq === state.openSeq) {
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if (!options.keepBusy && !state.exporting && openSeq === state.openSeq && pageSeq === state.pageSeq) {
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setBusy(false);
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}
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}
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}
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async function exportPDF() {
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if (!state.doc) {
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if (!state.doc || document.body.hasAttribute("aria-busy")) {
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return;
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}
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const openSeq = state.openSeq;
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setExportControlsDisabled(true);
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setBusy(true, "正在准备 PDF", 18, STATUS.exporting);
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state.exporting = true;
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updateControls();
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setBusy(true, "正在生成 PDF", 45, STATUS.exporting);
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try {
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await waitForPaint();
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if (openSeq !== state.openSeq) {
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return;
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}
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setProgress("正在生成 PDF", 45);
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await waitForPaint();
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if (openSeq !== state.openSeq) {
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return;
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}
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||||
const result = callWASM("ofdgoExportPDF");
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const result = await callWASM("ofdgoExportPDF");
|
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if (openSeq !== state.openSeq) {
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return;
|
||||
}
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@@ -1337,6 +1327,7 @@ async function exportPDF() {
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||||
showError(err, false);
|
||||
}
|
||||
} finally {
|
||||
state.exporting = false;
|
||||
if (openSeq === state.openSeq) {
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||||
setBusy(false);
|
||||
updateControls();
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@@ -1345,7 +1336,7 @@ async function exportPDF() {
|
||||
}
|
||||
|
||||
async function exportCurrentPage() {
|
||||
if (!state.doc) {
|
||||
if (!state.doc || document.body.hasAttribute("aria-busy")) {
|
||||
return;
|
||||
}
|
||||
const format = el.pageExportFormat.value;
|
||||
@@ -1355,32 +1346,26 @@ async function exportCurrentPage() {
|
||||
const info = exportFormatInfo(format);
|
||||
const label = info?.label || String(format || "").toUpperCase();
|
||||
const openSeq = state.openSeq;
|
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setExportControlsDisabled(true);
|
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setBusy(true, `正在准备 ${label}`, 18, STATUS.pageExporting);
|
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const fileName = pageFileName(info?.extension || format);
|
||||
state.exporting = true;
|
||||
updateControls();
|
||||
setBusy(true, `正在生成 ${label}`, 45, STATUS.pageExporting);
|
||||
try {
|
||||
await waitForPaint();
|
||||
if (openSeq !== state.openSeq) {
|
||||
return;
|
||||
}
|
||||
setProgress(`正在生成 ${label}`, 45);
|
||||
await waitForPaint();
|
||||
if (openSeq !== state.openSeq) {
|
||||
return;
|
||||
}
|
||||
const dpi = exportFormatUsesDPI(format) ? currentImageDPI() : 0;
|
||||
const result = callWASM("ofdgoExportPage", state.pageIndex, format, dpi);
|
||||
const result = await callWASM("ofdgoExportPage", state.pageIndex, format, dpi);
|
||||
if (openSeq !== state.openSeq) {
|
||||
return;
|
||||
}
|
||||
setProgress(`正在保存 ${result.label || label}`, 86);
|
||||
const bytes = result.bytes;
|
||||
downloadBytes(bytes, result.mime || info?.mime || "application/octet-stream", pageFileName(result.extension || info?.extension || format));
|
||||
downloadBytes(bytes, result.mime || info?.mime || "application/octet-stream", fileName);
|
||||
setStatus(`${result.label || label} 已导出 ${formatBytes(result.size || bytes.length, result.label || label)}`);
|
||||
} catch (err) {
|
||||
if (openSeq === state.openSeq) {
|
||||
showError(err, false);
|
||||
}
|
||||
} finally {
|
||||
state.exporting = false;
|
||||
if (openSeq === state.openSeq) {
|
||||
setBusy(false);
|
||||
updateControls();
|
||||
@@ -1571,7 +1556,7 @@ async function processPageRenderQueue() {
|
||||
delayed = true;
|
||||
continue;
|
||||
}
|
||||
const page = callWASM("ofdgoRenderPage", task.index);
|
||||
const page = await callWASM("ofdgoRenderPage", task.index);
|
||||
if (task.openSeq === state.openSeq) {
|
||||
state.pageCache.set(task.index, page);
|
||||
cacheThumbnail(task.index, page.svg);
|
||||
@@ -1714,7 +1699,7 @@ function setCurrentPage(index) {
|
||||
}
|
||||
updatePageListCurrent();
|
||||
updateControls();
|
||||
if (state.doc) {
|
||||
if (state.doc && !state.exporting) {
|
||||
setStatus(pageStatus(index, state.doc.pageCount));
|
||||
}
|
||||
}
|
||||
@@ -2461,7 +2446,7 @@ function setScale(nextScale, updateStatus = true, fitMode = "free") {
|
||||
restoreScaleAnchor(anchor);
|
||||
}
|
||||
el.zoomLabel.textContent = `${Math.round(state.scale * 100)}%`;
|
||||
if (updateStatus && state.doc) {
|
||||
if (updateStatus && state.doc && !state.exporting) {
|
||||
setStatus(`第 ${state.pageIndex + 1} / ${state.doc.pageCount} 页`);
|
||||
}
|
||||
updateControls();
|
||||
@@ -2559,9 +2544,9 @@ function updateControls() {
|
||||
el.fitButton.toggleAttribute("aria-pressed", hasDoc && state.fitMode === "width");
|
||||
el.fitHeightButton.toggleAttribute("aria-pressed", hasDoc && state.fitMode === "height");
|
||||
updateAnnotationButton();
|
||||
el.pageExportFormat.disabled = !hasDoc || !state.exportFormats.length;
|
||||
el.exportPageButton.disabled = !hasDoc || !state.exportFormats.length;
|
||||
el.exportButton.disabled = !hasDoc;
|
||||
el.pageExportFormat.disabled = !hasDoc || state.exporting || !state.exportFormats.length;
|
||||
el.exportPageButton.disabled = !hasDoc || state.exporting || !state.exportFormats.length;
|
||||
el.exportButton.disabled = !hasDoc || state.exporting;
|
||||
updateDPIControl();
|
||||
}
|
||||
|
||||
@@ -2571,38 +2556,24 @@ function updateAnnotationButton() {
|
||||
el.annotationButton.setAttribute("aria-label", el.annotationButton.title);
|
||||
}
|
||||
|
||||
function setExportControlsDisabled(disabled) {
|
||||
el.exportButton.disabled = disabled;
|
||||
el.exportPageButton.disabled = disabled;
|
||||
el.pageExportFormat.disabled = disabled;
|
||||
updateDPIControl(disabled);
|
||||
}
|
||||
|
||||
function callWASM(name, ...args) {
|
||||
const fn = globalThis[name];
|
||||
if (typeof fn !== "function") {
|
||||
throw new Error("渲染引擎未初始化");
|
||||
}
|
||||
async function callWASM(name, ...args) {
|
||||
if (state.wasmExited) {
|
||||
scheduleWASMRecovery();
|
||||
throw new Error(state.wasmRecovering ? "渲染引擎正在恢复" : "渲染引擎已退出，正在恢复");
|
||||
}
|
||||
let payload;
|
||||
try {
|
||||
payload = fn(...args);
|
||||
} catch (err) {
|
||||
const message = String(err.message || err);
|
||||
if (message.includes("Go program has already exited")) {
|
||||
markWASMExited(state.wasmSeq);
|
||||
throw new Error("渲染引擎已退出，正在恢复");
|
||||
if (!state.ready) {
|
||||
throw new Error("渲染引擎未初始化");
|
||||
}
|
||||
return new Promise((resolve, reject) => {
|
||||
const id = ++wasmRequestID;
|
||||
wasmRequests.set(id, { resolve, reject });
|
||||
try {
|
||||
wasmWorker.postMessage({ id, name, args });
|
||||
} catch (err) {
|
||||
wasmRequests.delete(id);
|
||||
reject(err);
|
||||
}
|
||||
throw err;
|
||||
}
|
||||
const result = typeof payload === "string" ? JSON.parse(payload) : payload;
|
||||
if (!result.ok) {
|
||||
throw new Error(result.error || "WASM 调用失败");
|
||||
}
|
||||
return result.data;
|
||||
});
|
||||
}
|
||||
|
||||
function showError(err, empty = !state.doc) {
|
||||
@@ -2694,8 +2665,8 @@ function exportFormatUsesDPI(value) {
|
||||
return value === "png" || value === "jpg";
|
||||
}
|
||||
|
||||
function updateDPIControl(disabled = false) {
|
||||
el.imageDPI.disabled = disabled || !state.doc || !exportFormatUsesDPI(el.pageExportFormat.value);
|
||||
function updateDPIControl() {
|
||||
el.imageDPI.disabled = state.exporting || !state.doc || !exportFormatUsesDPI(el.pageExportFormat.value);
|
||||
}
|
||||
|
||||
function currentImageDPI() {
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
const CACHE_PREFIX = `ofdgo:${self.registration.scope}:app:`;
|
||||
const META_CACHE = `${CACHE_PREFIX}meta`;
|
||||
const ASSETS = ["./", "ofdgo.css", "ofdgo.js", "ofdgo.json", "ofdgo.svg", "ofdgo.sw.js", "ofdgo.wasm", "wasm_exec.js"]
|
||||
const ASSETS = ["./", "ofdgo.css", "ofdgo.js", "ofdgo.json", "ofdgo.svg", "ofdgo.sw.js", "ofdgo.wasm", "ofdgo.wasm.js", "wasm_exec.js"]
|
||||
.map((path) => new URL(path, self.registration.scope).href);
|
||||
const CLIENT_PREFIX = new URL("__client/", self.registration.scope).href;
|
||||
|
||||
@@ -14,7 +14,7 @@ self.addEventListener("fetch", (event) => {
|
||||
if (event.request.method !== "GET" || !url.startsWith(self.registration.scope) || (navigation && url !== self.registration.scope)) {
|
||||
return;
|
||||
}
|
||||
event.respondWith(navigator.locks.request(CACHE_PREFIX, { mode: navigation ? "exclusive" : "shared" }, () => readResource(event, navigation)));
|
||||
event.respondWith(navigator.locks.request(CACHE_PREFIX, { mode: event.resultingClientId ? "exclusive" : "shared" }, () => readResource(event, navigation)));
|
||||
});
|
||||
|
||||
self.addEventListener("message", (event) => {
|
||||
@@ -85,13 +85,15 @@ async function readResource(event, navigation) {
|
||||
let bundle;
|
||||
if (navigation) {
|
||||
bundle = await currentBundle(meta);
|
||||
await meta.put(CLIENT_PREFIX + event.resultingClientId, Response.json(bundle));
|
||||
} else {
|
||||
bundle = await readBundle(meta, CLIENT_PREFIX + event.clientId);
|
||||
}
|
||||
if (!bundle || !await caches.has(bundle.name)) {
|
||||
return Response.error();
|
||||
}
|
||||
if (event.resultingClientId) {
|
||||
await meta.put(CLIENT_PREFIX + event.resultingClientId, Response.json(bundle));
|
||||
}
|
||||
const url = resourceURL(event.request.url);
|
||||
if (!bundle.assets.includes(url)) {
|
||||
return fetch(event.request);
|
||||
|
||||
@@ -0,0 +1,31 @@
|
||||
importScripts("./wasm_exec.js");
|
||||
|
||||
self.onmessage = ({ data: { id, name, args } }) => {
|
||||
try {
|
||||
const payload = globalThis[name](...args);
|
||||
const result = typeof payload === "string" ? JSON.parse(payload) : payload;
|
||||
self.postMessage({ id, ...result }, result.data?.bytes ? [result.data.bytes.buffer] : []);
|
||||
} catch (err) {
|
||||
self.postMessage({ id, ok: false, error: err.message });
|
||||
}
|
||||
};
|
||||
|
||||
function exitWASM(err) {
|
||||
self.postMessage({ type: "exit", error: err?.message || "渲染引擎已退出" });
|
||||
self.close();
|
||||
}
|
||||
|
||||
async function loadWASM() {
|
||||
const go = new Go();
|
||||
self.postMessage({ type: "progress", text: "正在下载引擎", percent: 16 });
|
||||
const response = await fetch("./ofdgo.wasm");
|
||||
self.postMessage({ type: "progress", text: "正在编译引擎", percent: 35 });
|
||||
const { instance } = await WebAssembly.instantiateStreaming(response, go.importObject);
|
||||
self.postMessage({ type: "progress", text: "正在启动引擎", percent: 58 });
|
||||
go.run(instance).then(exitWASM, exitWASM);
|
||||
if (!go.exited) {
|
||||
self.postMessage({ type: "ready" });
|
||||
}
|
||||
}
|
||||
|
||||
loadWASM().catch(exitWASM);
|
||||
Reference in new issue
Block a user