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feat(强化加载): 支持PDF按页加载与增量转换
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xiaoqidun committed 2026-10-26 17:21:15 +08:00
1 parent 04d7d2d672
commit fb4f03465b
11 files changed
+647 -154
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assets/webui/ofdgo_wasm.js
+14 -3
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@@ -235,9 +235,9 @@ async function handleMessage(engine, { id, name, args }) {
let saveStamp;
let channel;
const signal = operations.get(id)?.signal;
const cancellable = ["ofdgoPreparePrint", "ofdgoLayoutPrint", "ofdgoPrintSide", "ofdgoPrintPDF", "ofdgoResources", "ofdgoPrepareSave", "ofdgoSaveSnapshot", "ofdgoImportDocuments", "ofdgoImportImages", "ofdgoExportImages", "ofdgoConvertPDF", "ofdgoExportPage", "ofdgoExportDocument", "ofdgoExportAttachment", "ofdgoExportResource", "ofdgoExportMedia", "ofdgoExportVersion", "ofdgoSaveDocument", "ofdgoSaveSigned", "ofdgoImportPages"].includes(name);
const cancellable = ["ofdgoPreparePrint", "ofdgoLayoutPrint", "ofdgoPrintSide", "ofdgoPrintPDF", "ofdgoResources", "ofdgoPrepareSave", "ofdgoSaveSnapshot", "ofdgoImportDocuments", "ofdgoImportImages", "ofdgoExportImages", "ofdgoOpenPDF", "ofdgoExportPage", "ofdgoExportDocument", "ofdgoExportAttachment", "ofdgoExportResource", "ofdgoExportMedia", "ofdgoExportVersion", "ofdgoSaveDocument", "ofdgoSaveSigned", "ofdgoImportPages"].includes(name);
const importing = name === "ofdgoImportPages" || name === "ofdgoImportImages" || name === "ofdgoImportDocuments";
const converting = name === "ofdgoConvertPDF";
const converting = name === "ofdgoOpenPDF";
const saving = name === "ofdgoSaveDocument" || name === "ofdgoSaveSnapshot" || name === "ofdgoSaveSigned";
const resources = ["ofdgoPreparePrint", "ofdgoLayoutPrint", "ofdgoPrintSide", "ofdgoPrintPDF", "ofdgoResources", "ofdgoPrepareSave"].includes(name);
const key = name === "ofdgoOpen" ? args[3]?.key : name === "ofdgoSaveSigned" || name === "ofdgoLoadImport" ? args[1]?.key : null;
@@ -245,7 +245,7 @@ async function handleMessage(engine, { id, name, args }) {
const password = converting ? args[2] : name === "ofdgoSetEncryption" ? args[0]?.password : name === "ofdgoOpen" ? args[3]?.password : name === "ofdgoLoadImport" ? args[1]?.password : null;
try {
signal?.throwIfAborted();
if (["ofdgoOpen", "ofdgoLoadImport", "ofdgoConvertPDF"].includes(name) && args[0] instanceof Blob) {
if (["ofdgoOpen", "ofdgoOpenPDF", "ofdgoLoadImport"].includes(name) && args[0] instanceof Blob) {
const file = args[0], reader = new FileReaderSync();
args[0] = {size: file.size, read: (offset, size) => new Uint8Array(reader.readAsArrayBuffer(file.slice(offset, offset + size)))};
}
@@ -337,10 +337,21 @@ async function handleMessage(engine, { id, name, args }) {
if (!saving && args.some(value => value?.mode !== undefined)) args.push(done => finish(done));
}
}
if (engine.pdf && name !== "ofdgoOpenPDF") {
channel ||= new MessageChannel();
const context = await globalThis.ofdgoEngineCall(engine.id, "ofdgoPDFContext", (phase, completed, total, done) => {
postMessage({id, type: "conversion", phase, completed, total});
channel.port1.onmessage = () => done("", signal.aborted);
channel.port2.postMessage(null);
}, (name, done) => requestFont(engine, id, signal, name, done));
engine.pdf = JSON.parse(context).data === true;
}
const started = name === "ofdgoOpen" || name === "ofdgoRenderPage" ? performance.now() : null;
const payload = await globalThis.ofdgoEngineCall(engine.id, name, ...args);
signal?.throwIfAborted();
const result = typeof payload === "string" ? JSON.parse(payload) : payload;
if (result.ok && name === "ofdgoOpenPDF") engine.pdf = true;
if (result.ok && (name === "ofdgoOpen" || name === "ofdgoLoadPDF" && result.data.done)) engine.pdf = false;
if (started !== null && result.ok) result.elapsed = performance.now() - started;
if (cancellable && !importing && !converting && !resources && result.ok) {
result.data.size = size;