63 lines
1.8 KiB
63 lines
1.8 KiB
/* -*- 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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'use strict'; |
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// |
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importScripts('console.js'); |
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importScripts('event_handler.js'); |
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importScripts('../pdf.js'); |
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importScripts('../fonts.js'); |
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importScripts('../crypto.js'); |
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importScripts('../glyphlist.js'); |
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// Listen for messages from the main thread. |
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var pdfDoc = null; |
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var handler = new MessageHandler({ |
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"doc": function(data) { |
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pdfDocument = new PDFDoc(new Stream(data)); |
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console.log("setup pdfDoc"); |
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}, |
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"page": function(pageNum) { |
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pageNum = parseInt(pageNum); |
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console.log("about to process page", pageNum); |
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var page = pdfDocument.getPage(pageNum); |
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// The following code does quite the same as Page.prototype.startRendering, |
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// but stops at one point and sends the result back to the main thread. |
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var gfx = new CanvasGraphics(canvasCtx); |
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var fonts = []; |
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// TODO: Figure out how image loading is handled inside the worker. |
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var images = new ImagesLoader(); |
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// Pre compile the pdf page and fetch the fonts/images. |
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var preCompilation = page.preCompile(gfx, fonts, images); |
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// Extract the minimum of font data that is required to build all required |
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// font stuff on the main thread. |
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var fontsMin = []; |
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for (var i = 0; i < fonts.length; i++) { |
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var font = fonts[i]; |
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fontsMin.push({ |
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name: orgFont.name, |
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file: orgFont.file, |
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properties: orgFont.properties |
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}); |
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} |
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// TODO: Handle images here. |
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handler.send("page", { |
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pageNum: pageNum, |
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fonts: fontsMin, |
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images: [], |
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preCompilation: preCompilation, |
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}); |
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} |
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}, postMessage); |
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onmessage = handler.onMessage;
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