Initial API refectoring
This commit is contained in:
Yury Delendik
parent
d61c4f07f8
commit
73cab9c302
409
src/api.js
409
src/api.js
@ -1,22 +1,250 @@
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/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
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/*
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PDFDoc.prototype = {
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destroy: function PDFDoc_destroy() {
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if (this.worker)
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this.worker.terminate();
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if (this.fontWorker)
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this.fontWorker.terminate();
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for (var n in this.pageCache)
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delete this.pageCache[n];
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delete this.data;
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delete this.stream;
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delete this.pdf;
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delete this.catalog;
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}
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};
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*/
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(function pdfApiWrapper() {
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function PdfPageWrapper(page) {
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this.page = page;
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function WorkerTransport(promise) {
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this.workerReadyPromise = promise;
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this.objs = new PDFObjects();
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this.pageCache = [];
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this.pagePromises = [];
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this.fontsLoading = {};
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// If worker support isn't disabled explicit and the browser has worker
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// support, create a new web worker and test if it/the browser fullfills
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// all requirements to run parts of pdf.js in a web worker.
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// Right now, the requirement is, that an Uint8Array is still an Uint8Array
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// as it arrives on the worker. Chrome added this with version 15.
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if (!globalScope.PDFJS.disableWorker && typeof Worker !== 'undefined') {
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var workerSrc = PDFJS.workerSrc;
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if (typeof workerSrc === 'undefined') {
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error('No PDFJS.workerSrc specified');
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}
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try {
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var worker;
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if (PDFJS.isFirefoxExtension) {
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// The firefox extension can't load the worker from the resource://
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// url so we have to inline the script and then use the blob loader.
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var bb = new MozBlobBuilder();
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bb.append(document.querySelector('#PDFJS_SCRIPT_TAG').textContent);
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var blobUrl = window.URL.createObjectURL(bb.getBlob());
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worker = new Worker(blobUrl);
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} else {
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// Some versions of FF can't create a worker on localhost, see:
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// https://bugzilla.mozilla.org/show_bug.cgi?id=683280
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worker = new Worker(workerSrc);
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}
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var messageHandler = new MessageHandler('main', worker);
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messageHandler.on('test', function pdfDocTest(supportTypedArray) {
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if (supportTypedArray) {
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this.worker = worker;
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this.setupMessageHandler(messageHandler);
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} else {
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globalScope.PDFJS.disableWorker = true;
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this.setupFakeWorker();
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}
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}.bind(this));
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var testObj = new Uint8Array(1);
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// Some versions of Opera throw a DATA_CLONE_ERR on
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// serializing the typed array.
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messageHandler.send('test', testObj);
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return;
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} catch (e) {
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warn('The worker has been disabled.');
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}
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}
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// Either workers are disabled, not supported or have thrown an exception.
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// Thus, we fallback to a faked worker.
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globalScope.PDFJS.disableWorker = true;
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this.setupFakeWorker();
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}
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WorkerTransport.prototype = {
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setupFakeWorker: function WorkerTransport_setupFakeWorker() {
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// If we don't use a worker, just post/sendMessage to the main thread.
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var fakeWorker = {
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postMessage: function WorkerTransport_postMessage(obj) {
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fakeWorker.onmessage({data: obj});
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},
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terminate: function WorkerTransport_terminate() {}
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};
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var messageHandler = new MessageHandler('main', fakeWorker);
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this.setupMessageHandler(messageHandler);
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// If the main thread is our worker, setup the handling for the messages
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// the main thread sends to it self.
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WorkerMessageHandler.setup(messageHandler);
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},
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setupMessageHandler: function WorkerTransport_setupMessageHandler(messageHandler) {
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this.messageHandler = messageHandler;
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messageHandler.on('doc', function pdfDocPage(data) {
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var pdfInfo = data.pdfInfo;
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var pdfDocument = new PdfDocumentWrapper(pdfInfo, this);
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this.pdfDocument = pdfDocument;
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this.workerReadyPromise.resolve(pdfDocument)
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}, this);
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messageHandler.on('getpage', function pdfDocPage(data) {
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var pageInfo = data.pageInfo;
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var page = new PdfPageWrapper(pageInfo, transport);
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this.pageCache[pageInfo.pageNumber] = pageInfo;
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var promises = this.pagePromises[pageInfo.pageNumber];
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delete this.pagePromises[pageInfo.pageNumber];
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for (var i = 0, ii = promises.length; i < ii; ++i)
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promises.resolve(page);
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}, this);
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messageHandler.on('page', function pdfDocPage(data) {
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var pageNum = data.pageNum;
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var page = this.pageCache[pageNum];
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var depFonts = data.depFonts;
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page.stats.timeEnd('Page Request');
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page.startRenderingFromOperatorList(data.operatorList, depFonts);
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}, this);
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messageHandler.on('obj', function pdfDocObj(data) {
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var id = data[0];
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var type = data[1];
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switch (type) {
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case 'JpegStream':
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var imageData = data[2];
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loadJpegStream(id, imageData, this.objs);
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break;
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case 'Image':
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var imageData = data[2];
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this.objs.resolve(id, imageData);
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break;
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case 'Font':
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var name = data[2];
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var file = data[3];
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var properties = data[4];
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if (file) {
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// Rewrap the ArrayBuffer in a stream.
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var fontFileDict = new Dict();
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file = new Stream(file, 0, file.length, fontFileDict);
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}
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// At this point, only the font object is created but the font is
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// not yet attached to the DOM. This is done in `FontLoader.bind`.
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var font = new Font(name, file, properties);
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this.objs.resolve(id, font);
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break;
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default:
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error('Got unkown object type ' + type);
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}
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}, this);
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messageHandler.on('page_error', function pdfDocError(data) {
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var page = this.pageCache[data.pageNum];
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if (page.displayReadyPromise)
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page.displayReadyPromise.reject(data.error);
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else
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error(data.error);
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}, this);
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messageHandler.on('jpeg_decode', function(data, promise) {
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var imageData = data[0];
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var components = data[1];
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if (components != 3 && components != 1)
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error('Only 3 component or 1 component can be returned');
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var img = new Image();
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img.onload = (function messageHandler_onloadClosure() {
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var width = img.width;
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var height = img.height;
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var size = width * height;
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var rgbaLength = size * 4;
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var buf = new Uint8Array(size * components);
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var tmpCanvas = createScratchCanvas(width, height);
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var tmpCtx = tmpCanvas.getContext('2d');
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tmpCtx.drawImage(img, 0, 0);
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var data = tmpCtx.getImageData(0, 0, width, height).data;
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if (components == 3) {
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for (var i = 0, j = 0; i < rgbaLength; i += 4, j += 3) {
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buf[j] = data[i];
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buf[j + 1] = data[i + 1];
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buf[j + 2] = data[i + 2];
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}
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} else if (components == 1) {
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for (var i = 0, j = 0; i < rgbaLength; i += 4, j++) {
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buf[j] = data[i];
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}
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}
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promise.resolve({ data: buf, width: width, height: height});
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}).bind(this);
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var src = 'data:image/jpeg;base64,' + window.btoa(imageData);
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img.src = src;
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});
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},
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sendData: function WorkerTransport_sendData(data) {
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this.messageHandler.send('doc', data);
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},
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getPage: function WorkerTransport_getPage(n, promise) {
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if (this.pageCache[n]) {
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promise.resolve(pageCache[n]);
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return;
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}
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if (n in this.pagePromises) {
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this.pagePromises[n].push(promise);
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return;
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}
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this.pagePromises[n] = [promise];
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this.messageHandler.send('getpage', {page: n});
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}
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};
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function PdfPageWrapper(page, transport) {
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this.pageInfo = pageInfo;
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this.transport = transport;
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this.stats = new StatTimer();
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this.objs = transport.objs;
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}
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PdfPageWrapper.prototype = {
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get pageNumber() {
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return this.pageInfo.pageNumber;
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},
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get rotate() {
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return this.page.rotate;
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return this.pageInfo.rotate;
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},
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get stats() {
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return this.page.stats;
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return this.stats;
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},
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get ref() {
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return this.page.ref;
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return this.pageInfo.ref;
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},
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get view() {
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return this.page.view;
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return this.pageInfo.view;
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},
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getViewport: function(scale, rotate) {
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if (arguments.length < 2)
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@ -25,23 +253,133 @@
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},
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getAnnotations: function() {
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var promise = new PDFJS.Promise();
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var annotations = this.page.getAnnotations();
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var annotations = this.pageInfo.annotations;
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promise.resolve(annotations);
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return promise;
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},
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render: function(renderContext) {
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var promise = new PDFJS.Promise();
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this.page.startRendering(renderContext.canvasContext,
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renderContext.viewport,
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function complete(error) {
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var promise;
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var stats = this.stats;
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stats.time('Overall');
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// If there is no displayReadyPromise yet, then the operatorList was never
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// requested before. Make the request and create the promise.
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if (!this.displayReadyPromise) {
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this.displayReadyPromise = promise = new Promise();
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this.stats.time('Page Request');
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this.messageHandler.send('page_request', this.pageNumber + 1);
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} else
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promise = this.displayReadyPromise;
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var callback = (function complete(error) {
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if (error)
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promise.reject(error);
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else
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promise.resolve();
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},
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renderContext.textLayer);
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});
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// Once the operatorList and fonts are loaded, do the actual rendering.
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this.displayReadyPromise.then(
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function pageDisplayReadyPromise() {
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var gfx = new CanvasGraphics(renderContext.canvasContext,
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this.objs, renderContext.textLayer);
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try {
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this.display(gfx, renderContext.viewport, callback);
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} catch (e) {
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if (callback)
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callback(e);
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else
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error(e);
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}
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}.bind(this),
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function pageDisplayReadPromiseError(reason) {
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if (callback)
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callback(reason);
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else
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error(reason);
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}
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);
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return promise;
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},
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startRenderingFromOperatorList:
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function Page_startRenderingFromOperatorList(operatorList, fonts) {
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var self = this;
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this.operatorList = operatorList;
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var displayContinuation = function pageDisplayContinuation() {
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// Always defer call to display() to work around bug in
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// Firefox error reporting from XHR callbacks.
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setTimeout(function pageSetTimeout() {
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self.displayReadyPromise.resolve();
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});
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};
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this.ensureFonts(fonts,
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function pageStartRenderingFromOperatorListEnsureFonts() {
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displayContinuation();
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}
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);
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},
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ensureFonts: function Page_ensureFonts(fonts, callback) {
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this.stats.time('Font Loading');
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// Convert the font names to the corresponding font obj.
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for (var i = 0, ii = fonts.length; i < ii; i++) {
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fonts[i] = this.objs.objs[fonts[i]].data;
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}
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// Load all the fonts
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FontLoader.bind(
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fonts,
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function pageEnsureFontsFontObjs(fontObjs) {
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this.stats.timeEnd('Font Loading');
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callback.call(this);
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}.bind(this)
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);
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},
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display: function Page_display(gfx, viewport, callback) {
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var stats = this.stats;
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stats.time('Rendering');
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/* REMOVE ??? */
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var xref = this.xref;
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var resources = this.resources;
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assertWellFormed(isDict(resources), 'invalid page resources');
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gfx.xref = xref;
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gfx.res = resources;
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/* REMOVE END */
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gfx.beginDrawing(viewport);
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var startIdx = 0;
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var length = this.operatorList.fnArray.length;
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var operatorList = this.operatorList;
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var stepper = null;
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if (PDFJS.pdfBug && StepperManager.enabled) {
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stepper = StepperManager.create(this.pageNumber);
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stepper.init(operatorList);
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stepper.nextBreakPoint = stepper.getNextBreakPoint();
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}
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var self = this;
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function next() {
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startIdx =
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gfx.executeOperatorList(operatorList, startIdx, next, stepper);
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if (startIdx == length) {
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gfx.endDrawing();
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stats.timeEnd('Rendering');
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stats.timeEnd('Overall');
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if (callback) callback();
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}
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}
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next();
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},
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getTextContent: function() {
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var promise = new PDFJS.Promise();
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var textContent = 'page text'; // not implemented
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@ -59,45 +397,49 @@
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}
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};
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function PdfDocumentWrapper(pdf) {
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this.pdf = pdf;
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function PdfDocumentWrapper(pdfInfo, transport) {
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this.pdfInfo = pdfInfo;
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this.transport = transport;
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}
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PdfDocumentWrapper.prototype = {
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get numPages() {
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return this.pdf.numPages;
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return this.pdfInfo.numPages;
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},
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get fingerprint() {
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return this.pdf.fingerprint;
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return this.pdfInfo.fingerprint;
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},
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getPage: function(number) {
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var promise = new PDFJS.Promise();
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var page = this.pdf.getPage(number);
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promise.resolve(new PdfPageWrapper(page));
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this.transport.getPage(number, promise);
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return promise;
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},
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getDestinations: function() {
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var promise = new PDFJS.Promise();
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var destinations = this.pdf.catalog.destinations;
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var destinations = this.pdfInfo.destinations;
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promise.resolve(destinations);
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return promise;
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},
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getOutline: function() {
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var promise = new PDFJS.Promise();
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var outline = this.pdf.catalog.documentOutline;
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var outline = this.pdfInfo.documentOutline;
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promise.resolve(outline);
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return promise;
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},
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getMetadata: function() {
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var promise = new PDFJS.Promise();
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var info = this.pdf.info;
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var metadata = this.pdf.catalog.metadata;
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promise.resolve(info, metadata ? new PDFJS.Metadata(metadata) : null);
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var info = this.pdfInfo.info;
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var metadata = this.pdfInfo.metadata;
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promise.resolve({
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info: info,
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metadata: metadata ? new PDFJS.Metadata(metadata) : null
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});
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return promise;
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}
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};
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PDFJS.getDocument = function getDocument(source) {
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var promise = new PDFJS.Promise();
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var transport = new WorkerTransport(promise);
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if (typeof source === 'string') {
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// fetch url
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PDFJS.getPdf(
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@ -116,26 +458,13 @@
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}
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},
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function getPdfLoad(data) {
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var pdf = null;
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try {
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pdf = new PDFJS.PDFDoc(data);
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} catch (e) {
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promise.reject('An error occurred while reading the PDF.', e);
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}
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if (pdf)
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promise.resolve(new PdfDocumentWrapper(pdf));
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transport.sendData(data);
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});
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} else {
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// assuming the source is array, instantiating directly from it
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var pdf = null;
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try {
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pdf = new PDFJS.PDFDoc(source);
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} catch (e) {
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promise.reject('An error occurred while reading the PDF.', e);
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}
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if (pdf)
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promise.resolve(new PdfDocumentWrapper(pdf));
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transport.sendData(source);
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}
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return promise;
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};
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})();
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344
src/core.js
344
src/core.js
@ -133,26 +133,6 @@ var Page = (function PageClosure() {
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return shadow(this, 'rotate', rotate);
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},
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startRenderingFromOperatorList:
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function Page_startRenderingFromOperatorList(operatorList, fonts) {
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var self = this;
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this.operatorList = operatorList;
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|
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var displayContinuation = function pageDisplayContinuation() {
|
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// Always defer call to display() to work around bug in
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// Firefox error reporting from XHR callbacks.
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setTimeout(function pageSetTimeout() {
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self.displayReadyPromise.resolve();
|
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});
|
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};
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this.ensureFonts(fonts,
|
||||
function pageStartRenderingFromOperatorListEnsureFonts() {
|
||||
displayContinuation();
|
||||
}
|
||||
);
|
||||
},
|
||||
|
||||
getOperatorList: function Page_getOperatorList(handler, dependency) {
|
||||
if (this.operatorList) {
|
||||
// content was compiled
|
||||
@ -183,59 +163,6 @@ var Page = (function PageClosure() {
|
||||
return this.operatorList;
|
||||
},
|
||||
|
||||
ensureFonts: function Page_ensureFonts(fonts, callback) {
|
||||
this.stats.time('Font Loading');
|
||||
// Convert the font names to the corresponding font obj.
|
||||
for (var i = 0, ii = fonts.length; i < ii; i++) {
|
||||
fonts[i] = this.objs.objs[fonts[i]].data;
|
||||
}
|
||||
|
||||
// Load all the fonts
|
||||
FontLoader.bind(
|
||||
fonts,
|
||||
function pageEnsureFontsFontObjs(fontObjs) {
|
||||
this.stats.timeEnd('Font Loading');
|
||||
|
||||
callback.call(this);
|
||||
}.bind(this)
|
||||
);
|
||||
},
|
||||
|
||||
display: function Page_display(gfx, viewport, callback) {
|
||||
var stats = this.stats;
|
||||
stats.time('Rendering');
|
||||
var xref = this.xref;
|
||||
var resources = this.resources;
|
||||
var mediaBox = this.mediaBox;
|
||||
assertWellFormed(isDict(resources), 'invalid page resources');
|
||||
|
||||
gfx.xref = xref;
|
||||
gfx.res = resources;
|
||||
gfx.beginDrawing(viewport);
|
||||
|
||||
var startIdx = 0;
|
||||
var length = this.operatorList.fnArray.length;
|
||||
var operatorList = this.operatorList;
|
||||
var stepper = null;
|
||||
if (PDFJS.pdfBug && StepperManager.enabled) {
|
||||
stepper = StepperManager.create(this.pageNumber);
|
||||
stepper.init(operatorList);
|
||||
stepper.nextBreakPoint = stepper.getNextBreakPoint();
|
||||
}
|
||||
|
||||
var self = this;
|
||||
function next() {
|
||||
startIdx =
|
||||
gfx.executeOperatorList(operatorList, startIdx, next, stepper);
|
||||
if (startIdx == length) {
|
||||
gfx.endDrawing();
|
||||
stats.timeEnd('Rendering');
|
||||
stats.timeEnd('Overall');
|
||||
if (callback) callback();
|
||||
}
|
||||
}
|
||||
next();
|
||||
},
|
||||
getLinks: function Page_getLinks() {
|
||||
var links = [];
|
||||
var annotations = pageGetAnnotations();
|
||||
@ -376,35 +303,7 @@ var Page = (function PageClosure() {
|
||||
},
|
||||
startRendering: function Page_startRendering(ctx, viewport,
|
||||
callback, textLayer) {
|
||||
var stats = this.stats;
|
||||
stats.time('Overall');
|
||||
// If there is no displayReadyPromise yet, then the operatorList was never
|
||||
// requested before. Make the request and create the promise.
|
||||
if (!this.displayReadyPromise) {
|
||||
this.pdf.startRendering(this);
|
||||
this.displayReadyPromise = new Promise();
|
||||
}
|
||||
|
||||
// Once the operatorList and fonts are loaded, do the actual rendering.
|
||||
this.displayReadyPromise.then(
|
||||
function pageDisplayReadyPromise() {
|
||||
var gfx = new CanvasGraphics(ctx, this.objs, textLayer);
|
||||
try {
|
||||
this.display(gfx, viewport, callback);
|
||||
} catch (e) {
|
||||
if (callback)
|
||||
callback(e);
|
||||
else
|
||||
error(e);
|
||||
}
|
||||
}.bind(this),
|
||||
function pageDisplayReadPromiseError(reason) {
|
||||
if (callback)
|
||||
callback(reason);
|
||||
else
|
||||
error(reason);
|
||||
}
|
||||
);
|
||||
/// DELETE
|
||||
}
|
||||
};
|
||||
|
||||
@ -578,244 +477,3 @@ var PDFDocModel = (function PDFDocModelClosure() {
|
||||
|
||||
return PDFDocModel;
|
||||
})();
|
||||
|
||||
var PDFDoc = (function PDFDocClosure() {
|
||||
function PDFDoc(arg, callback) {
|
||||
var stream = null;
|
||||
var data = null;
|
||||
|
||||
if (isStream(arg)) {
|
||||
stream = arg;
|
||||
data = arg.bytes;
|
||||
} else if (isArrayBuffer(arg)) {
|
||||
stream = new Stream(arg);
|
||||
data = arg;
|
||||
} else {
|
||||
error('PDFDoc: Unknown argument type');
|
||||
}
|
||||
|
||||
this.data = data;
|
||||
this.stream = stream;
|
||||
this.pdfModel = new PDFDocModel(stream);
|
||||
this.fingerprint = this.pdfModel.getFingerprint();
|
||||
this.info = this.pdfModel.getDocumentInfo();
|
||||
this.catalog = this.pdfModel.catalog;
|
||||
this.objs = new PDFObjects();
|
||||
|
||||
this.pageCache = [];
|
||||
this.fontsLoading = {};
|
||||
this.workerReadyPromise = new Promise('workerReady');
|
||||
|
||||
// If worker support isn't disabled explicit and the browser has worker
|
||||
// support, create a new web worker and test if it/the browser fullfills
|
||||
// all requirements to run parts of pdf.js in a web worker.
|
||||
// Right now, the requirement is, that an Uint8Array is still an Uint8Array
|
||||
// as it arrives on the worker. Chrome added this with version 15.
|
||||
if (!globalScope.PDFJS.disableWorker && typeof Worker !== 'undefined') {
|
||||
var workerSrc = PDFJS.workerSrc;
|
||||
if (typeof workerSrc === 'undefined') {
|
||||
error('No PDFJS.workerSrc specified');
|
||||
}
|
||||
|
||||
try {
|
||||
var worker;
|
||||
if (PDFJS.isFirefoxExtension) {
|
||||
// The firefox extension can't load the worker from the resource://
|
||||
// url so we have to inline the script and then use the blob loader.
|
||||
var bb = new MozBlobBuilder();
|
||||
bb.append(document.querySelector('#PDFJS_SCRIPT_TAG').textContent);
|
||||
var blobUrl = window.URL.createObjectURL(bb.getBlob());
|
||||
worker = new Worker(blobUrl);
|
||||
} else {
|
||||
// Some versions of FF can't create a worker on localhost, see:
|
||||
// https://bugzilla.mozilla.org/show_bug.cgi?id=683280
|
||||
worker = new Worker(workerSrc);
|
||||
}
|
||||
|
||||
var messageHandler = new MessageHandler('main', worker);
|
||||
|
||||
messageHandler.on('test', function pdfDocTest(supportTypedArray) {
|
||||
if (supportTypedArray) {
|
||||
this.worker = worker;
|
||||
this.setupMessageHandler(messageHandler);
|
||||
} else {
|
||||
globalScope.PDFJS.disableWorker = true;
|
||||
this.setupFakeWorker();
|
||||
}
|
||||
}.bind(this));
|
||||
|
||||
var testObj = new Uint8Array(1);
|
||||
// Some versions of Opera throw a DATA_CLONE_ERR on
|
||||
// serializing the typed array.
|
||||
messageHandler.send('test', testObj);
|
||||
return;
|
||||
} catch (e) {
|
||||
warn('The worker has been disabled.');
|
||||
}
|
||||
}
|
||||
// Either workers are disabled, not supported or have thrown an exception.
|
||||
// Thus, we fallback to a faked worker.
|
||||
globalScope.PDFJS.disableWorker = true;
|
||||
this.setupFakeWorker();
|
||||
}
|
||||
|
||||
PDFDoc.prototype = {
|
||||
setupFakeWorker: function PDFDoc_setupFakeWorker() {
|
||||
// If we don't use a worker, just post/sendMessage to the main thread.
|
||||
var fakeWorker = {
|
||||
postMessage: function PDFDoc_postMessage(obj) {
|
||||
fakeWorker.onmessage({data: obj});
|
||||
},
|
||||
terminate: function PDFDoc_terminate() {}
|
||||
};
|
||||
|
||||
var messageHandler = new MessageHandler('main', fakeWorker);
|
||||
this.setupMessageHandler(messageHandler);
|
||||
|
||||
// If the main thread is our worker, setup the handling for the messages
|
||||
// the main thread sends to it self.
|
||||
WorkerMessageHandler.setup(messageHandler);
|
||||
},
|
||||
|
||||
|
||||
setupMessageHandler: function PDFDoc_setupMessageHandler(messageHandler) {
|
||||
this.messageHandler = messageHandler;
|
||||
|
||||
messageHandler.on('page', function pdfDocPage(data) {
|
||||
var pageNum = data.pageNum;
|
||||
var page = this.pageCache[pageNum];
|
||||
var depFonts = data.depFonts;
|
||||
|
||||
page.stats.timeEnd('Page Request');
|
||||
page.startRenderingFromOperatorList(data.operatorList, depFonts);
|
||||
}, this);
|
||||
|
||||
messageHandler.on('obj', function pdfDocObj(data) {
|
||||
var id = data[0];
|
||||
var type = data[1];
|
||||
|
||||
switch (type) {
|
||||
case 'JpegStream':
|
||||
var imageData = data[2];
|
||||
loadJpegStream(id, imageData, this.objs);
|
||||
break;
|
||||
case 'Image':
|
||||
var imageData = data[2];
|
||||
this.objs.resolve(id, imageData);
|
||||
break;
|
||||
case 'Font':
|
||||
var name = data[2];
|
||||
var file = data[3];
|
||||
var properties = data[4];
|
||||
|
||||
if (file) {
|
||||
// Rewrap the ArrayBuffer in a stream.
|
||||
var fontFileDict = new Dict();
|
||||
file = new Stream(file, 0, file.length, fontFileDict);
|
||||
}
|
||||
|
||||
// At this point, only the font object is created but the font is
|
||||
// not yet attached to the DOM. This is done in `FontLoader.bind`.
|
||||
var font = new Font(name, file, properties);
|
||||
this.objs.resolve(id, font);
|
||||
break;
|
||||
default:
|
||||
error('Got unkown object type ' + type);
|
||||
}
|
||||
}, this);
|
||||
|
||||
messageHandler.on('page_error', function pdfDocError(data) {
|
||||
var page = this.pageCache[data.pageNum];
|
||||
if (page.displayReadyPromise)
|
||||
page.displayReadyPromise.reject(data.error);
|
||||
else
|
||||
error(data.error);
|
||||
}, this);
|
||||
|
||||
messageHandler.on('jpeg_decode', function(data, promise) {
|
||||
var imageData = data[0];
|
||||
var components = data[1];
|
||||
if (components != 3 && components != 1)
|
||||
error('Only 3 component or 1 component can be returned');
|
||||
|
||||
var img = new Image();
|
||||
img.onload = (function messageHandler_onloadClosure() {
|
||||
var width = img.width;
|
||||
var height = img.height;
|
||||
var size = width * height;
|
||||
var rgbaLength = size * 4;
|
||||
var buf = new Uint8Array(size * components);
|
||||
var tmpCanvas = createScratchCanvas(width, height);
|
||||
var tmpCtx = tmpCanvas.getContext('2d');
|
||||
tmpCtx.drawImage(img, 0, 0);
|
||||
var data = tmpCtx.getImageData(0, 0, width, height).data;
|
||||
|
||||
if (components == 3) {
|
||||
for (var i = 0, j = 0; i < rgbaLength; i += 4, j += 3) {
|
||||
buf[j] = data[i];
|
||||
buf[j + 1] = data[i + 1];
|
||||
buf[j + 2] = data[i + 2];
|
||||
}
|
||||
} else if (components == 1) {
|
||||
for (var i = 0, j = 0; i < rgbaLength; i += 4, j++) {
|
||||
buf[j] = data[i];
|
||||
}
|
||||
}
|
||||
promise.resolve({ data: buf, width: width, height: height});
|
||||
}).bind(this);
|
||||
var src = 'data:image/jpeg;base64,' + window.btoa(imageData);
|
||||
img.src = src;
|
||||
});
|
||||
|
||||
setTimeout(function pdfDocFontReadySetTimeout() {
|
||||
messageHandler.send('doc', this.data);
|
||||
this.workerReadyPromise.resolve(true);
|
||||
}.bind(this));
|
||||
},
|
||||
|
||||
get numPages() {
|
||||
return this.pdfModel.numPages;
|
||||
},
|
||||
|
||||
startRendering: function PDFDoc_startRendering(page) {
|
||||
// The worker might not be ready to receive the page request yet.
|
||||
this.workerReadyPromise.then(function pdfDocStartRenderingThen() {
|
||||
page.stats.time('Page Request');
|
||||
this.messageHandler.send('page_request', page.pageNumber + 1);
|
||||
}.bind(this));
|
||||
},
|
||||
|
||||
getPage: function PDFDoc_getPage(n) {
|
||||
if (this.pageCache[n])
|
||||
return this.pageCache[n];
|
||||
|
||||
var page = this.pdfModel.getPage(n);
|
||||
// Add a reference to the objects such that Page can forward the reference
|
||||
// to the CanvasGraphics and so on.
|
||||
page.objs = this.objs;
|
||||
page.pdf = this;
|
||||
return (this.pageCache[n] = page);
|
||||
},
|
||||
|
||||
destroy: function PDFDoc_destroy() {
|
||||
if (this.worker)
|
||||
this.worker.terminate();
|
||||
|
||||
if (this.fontWorker)
|
||||
this.fontWorker.terminate();
|
||||
|
||||
for (var n in this.pageCache)
|
||||
delete this.pageCache[n];
|
||||
|
||||
delete this.data;
|
||||
delete this.stream;
|
||||
delete this.pdf;
|
||||
delete this.catalog;
|
||||
}
|
||||
};
|
||||
|
||||
return PDFDoc;
|
||||
})();
|
||||
|
||||
globalScope.PDFJS.PDFDoc = PDFDoc;
|
||||
|
||||
|
||||
@ -89,6 +89,27 @@ var WorkerMessageHandler = {
|
||||
// Create only the model of the PDFDoc, which is enough for
|
||||
// processing the content of the pdf.
|
||||
pdfModel = new PDFDocModel(new Stream(data));
|
||||
var doc = {
|
||||
numPages: pdfModel.numPages,
|
||||
fingerprint: pdfModel.fingerprint,
|
||||
destinations: pdfModel.catalog.destinations,
|
||||
outline: pdfModel.catalog.documentOutline,
|
||||
info: pdfModel.info,
|
||||
metadata: pdfModel.catalog.metadata
|
||||
};
|
||||
handler.send('doc', {pdfInfo: doc});
|
||||
});
|
||||
|
||||
handler.on('getpage', function wphSetupTest(data) {
|
||||
var pdfPage = pdfModel.getPage(data.pageNumber);
|
||||
var page = {
|
||||
pageNumber: data.pageNumber,
|
||||
rotate: pdfPage.rotate,
|
||||
ref: pdfPage.ref,
|
||||
view: pdfPage.view,
|
||||
annotations: pdfPage.getAnnotations(), // REMOVE
|
||||
};
|
||||
handler.send('getpage', {pageInfo: page});
|
||||
});
|
||||
|
||||
handler.on('page_request', function wphSetupPageRequest(pageNum) {
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user