84 lines
2.4 KiB
JavaScript
84 lines
2.4 KiB
JavaScript
/* -*- 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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var WorkerHandler = {
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setup: function(handler) {
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var pdfDoc = null;
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handler.on("doc", function(data) {
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pdfDoc = new PDFDoc(new Stream(data));
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console.log("setup pdfDoc");
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});
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handler.on("page_request", 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 = pdfDoc.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(null);
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var fonts = [];
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var images = [];
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// Pre compile the pdf page and fetch the fonts/images.
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var IRQueue = page.getIRQueue(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: font.name,
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file: font.file,
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properties: font.properties
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});
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}
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// TODO: Handle images here.
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console.log("about to send page", pageNum);
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if (true /* show used commands */) {
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var cmdMap = {};
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var fnArray = IRQueue .fnArray;
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for (var i = 0; i < fnArray.length; i++) {
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var entry = fnArray[i];
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if (entry == "paintReadyFormXObject") {
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//console.log(preCompilation.argsArray[i]);
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}
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if (cmdMap[entry] == null) {
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cmdMap[entry] = 1;
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} else {
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cmdMap[entry] += 1;
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}
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}
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// // Make a copy of the fnArray and show all cmds it has.
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// var fnArray = preCompilation.fnArray.slice(0).sort();
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// for (var i = 0; i < fnArray.length; true) {
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// if (fnArray[i] == fnArray[i + 1]) {
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// fnArray.splice(i, 1);
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// } else {
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// i++;
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// }
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// }
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console.log("cmds", JSON.stringify(cmdMap));
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}
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handler.send("page", {
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pageNum: pageNum,
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fonts: fontsMin,
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images: images,
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IRQueue: IRQueue,
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});
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}, this);
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}
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}
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