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https://github.com/xiaoqidun/ofdgo.git
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xiaoqidun committed
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@@ -115,6 +115,9 @@ const el = {
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pageListPanel: document.querySelector(".page-list-panel"),
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pageList: document.querySelector("#pageList"),
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metaPanel: document.querySelector(".meta-panel"),
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appPanel: document.querySelector("#appPanel"),
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offlineStatus: document.querySelector("#offlineStatus"),
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refreshAppButton: document.querySelector("#refreshAppButton"),
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metaTitle: document.querySelector("#metaTitle"),
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metaAuthor: document.querySelector("#metaAuthor"),
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metaVersion: document.querySelector("#metaVersion"),
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@@ -152,6 +155,7 @@ el.annotationButton.addEventListener("click", toggleAnnotations);
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el.pageExportFormat.addEventListener("change", () => updateDPIControl());
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el.exportPageButton.addEventListener("click", exportCurrentPage);
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el.exportButton.addEventListener("click", exportPDF);
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el.refreshAppButton.addEventListener("click", refreshApplication);
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el.pageInput.addEventListener("change", () => {
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const page = Number.parseInt(el.pageInput.value, 10);
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if (Number.isFinite(page)) {
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@@ -228,6 +232,10 @@ function resizeViewer() {
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async function boot() {
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setBusy(true, "正在准备引擎", 8, STATUS.engine);
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try {
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if (!await prepareOffline()) {
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return;
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}
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setProgress("正在准备引擎", 8, STATUS.engine);
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await ensureWASM();
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setProgress("引擎准备完成", 70);
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loadExportFormats();
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@@ -247,6 +255,120 @@ async function boot() {
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}
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}
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async function registerOffline() {
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const scope = new URL("./", location.href).href;
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let registration = await navigator.serviceWorker.getRegistration(scope);
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if (!registration || registration.scope !== scope) {
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registration = await navigator.serviceWorker.register("./ofdgo.sw.js", { updateViaCache: "none" });
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}
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const worker = registration.active || registration.installing || registration.waiting;
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await waitForWorker(worker, "activated");
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return registration;
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}
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async function prepareOffline() {
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if (!window.isSecureContext || !("serviceWorker" in navigator) || !("caches" in window) || !("locks" in navigator)) {
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return true;
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}
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el.appPanel.hidden = false;
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setProgress("正在准备离线", null, "正在准备离线");
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try {
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const registration = await registerOffline();
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const result = await requestOffline(registration.active, "prepare");
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if (result.reload) {
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location.reload();
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return false;
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}
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el.offlineStatus.textContent = "可离线";
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} catch {
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el.offlineStatus.textContent = "未就绪";
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}
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el.refreshAppButton.disabled = false;
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return true;
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}
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function waitForWorker(worker, target) {
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return new Promise((resolve, reject) => {
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function changed() {
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if (worker.state === target || worker.state === "activated") {
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worker.removeEventListener("statechange", changed);
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resolve();
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} else if (worker.state === "redundant") {
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worker.removeEventListener("statechange", changed);
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reject(new Error("离线服务启动失败"));
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}
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}
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worker.addEventListener("statechange", changed);
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changed();
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});
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}
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function requestOffline(worker, type) {
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return new Promise((resolve, reject) => {
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const channel = new MessageChannel();
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function close() {
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channel.port1.close();
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worker.removeEventListener("statechange", changed);
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}
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function changed() {
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if (worker.state === "redundant") {
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close();
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reject(new Error("离线服务已更新"));
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}
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}
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channel.port1.onmessage = ({ data }) => {
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close();
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if (data.ok) {
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resolve(data);
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} else {
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reject(new Error(data.error));
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}
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};
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worker.addEventListener("statechange", changed);
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worker.postMessage({ type }, [channel.port2]);
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changed();
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});
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}
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async function refreshApplication() {
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if (document.body.hasAttribute("aria-busy")) {
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return;
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}
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if ((state.ofdBytes || state.userFonts.length) && !window.confirm("刷新后需重新打开文件和添加字体，是否继续？")) {
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return;
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}
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setBusy(true, "正在刷新应用", null, "正在刷新应用");
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el.refreshAppButton.disabled = true;
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const panels = document.querySelectorAll(".toolbar, .workspace");
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panels.forEach((panel) => { panel.inert = true; });
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try {
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if (navigator.storage?.persist) {
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await navigator.storage.persist().catch(() => false);
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}
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const scope = new URL("./", location.href).href;
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await navigator.locks.request(`ofdgo:${scope}:refresh`, { ifAvailable: true }, async (lock) => {
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if (!lock) {
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throw new Error("应用正在刷新");
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}
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const registration = await registerOffline();
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await registration.update();
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if (registration.installing) {
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await waitForWorker(registration.installing, "installed");
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}
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const worker = registration.waiting || registration.active;
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await requestOffline(worker, "refresh");
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await waitForWorker(worker, "activated");
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location.reload();
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});
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} catch (err) {
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setStatus(err.message === "应用正在刷新" ? err.message : "应用刷新失败");
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} finally {
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panels.forEach((panel) => { panel.inert = false; });
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el.refreshAppButton.disabled = false;
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setBusy(false);
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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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state.exportFormats = formats;
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@@ -532,7 +654,7 @@ async function loadDocumentLocalFonts(available, openSeq = state.openSeq) {
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renderFontList();
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return false;
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}
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if (docFonts.length && !docNames.length) {
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if (!docNames.length) {
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state.localFonts = [];
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setStatus("OFD 字体均为内嵌");
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updateFontSummary();
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@@ -540,7 +662,7 @@ async function loadDocumentLocalFonts(available, openSeq = state.openSeq) {
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return false;
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}
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const docWanted = fontNameKeys(docNames);
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const docLoadLimit = docNames.length ? Math.min(LOCAL_FONT_LOAD_LIMIT, Math.max(4, docNames.length * 3)) : 6;
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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, docWanted, docLoadLimit);
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if (!selected.length) {
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const fallbackWanted = fontNameKeys(COMMON_FONT_NAMES);
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@@ -549,7 +671,7 @@ async function loadDocumentLocalFonts(available, openSeq = state.openSeq) {
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const emptyStatus = available.length === 0 ? "未读取到系统字体" : "未匹配到文档所需字体";
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const fonts = [];
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for (let i = 0; i < selected.length; i += 1) {
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setProgress(`正在读取字体 ${i + 1}/${selected.length}`, 20 + Math.round(i / Math.max(1, selected.length) * 60));
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setProgress(`正在读取字体 ${i + 1}/${selected.length}`, 20 + Math.round(i / selected.length * 60));
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const item = selected[i];
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const blob = await item.blob();
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if (openSeq !== state.openSeq) {
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@@ -563,7 +685,7 @@ async function loadDocumentLocalFonts(available, openSeq = state.openSeq) {
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if (openSeq !== state.openSeq) {
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return false;
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}
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state.localFonts = mergeFontRecords([], fonts);
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state.localFonts = fonts;
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setStatus(fonts.length ? `已加载 ${fonts.length} 个系统字体` : emptyStatus);
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updateFontSummary();
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renderFontList();
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@@ -624,8 +746,9 @@ function fontData(fonts) {
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}
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function updateFontSummary() {
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const total = fontRecords().length;
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const enabled = fontRecords().filter((font) => font.enabled).length;
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const fonts = fontRecords();
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const total = fonts.length;
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const enabled = fonts.filter((font) => font.enabled).length;
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el.availableFontSummary.textContent = total ? `${enabled}/${total}` : "0";
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}
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@@ -640,20 +763,6 @@ function createFontRecord(name, data, source) {
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};
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}
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function mergeFontRecords(oldFonts, newFonts) {
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const seen = new Set(oldFonts.map((font) => normalizeFontName(font.name)));
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const merged = [...oldFonts];
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for (const font of newFonts) {
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const key = normalizeFontName(font.name);
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if (!key || seen.has(key)) {
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continue;
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}
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seen.add(key);
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merged.push(font);
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}
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return merged;
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}
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function fontRecords() {
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return [...state.localFonts, ...state.userFonts];
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}
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@@ -2347,10 +2456,7 @@ function setBusy(busy, text = "", percent = 0, status = "") {
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return;
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}
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el.progressPanel.hidden = false;
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if (status) {
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setStatus(status);
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}
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setProgress(text, percent);
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setProgress(text, percent, status);
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}
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function setProgress(text = "", percent = 0, status = "") {
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@@ -2360,6 +2466,10 @@ function setProgress(text = "", percent = 0, status = "") {
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if (status) {
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setStatus(status);
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}
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el.progressBar.parentElement.hidden = percent === null;
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if (percent === null) {
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return;
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}
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const value = Math.max(0, Math.min(100, percent));
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el.progressBar.style.width = `${value}%`;
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el.progressBar.setAttribute("aria-valuenow", String(value));
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