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Artur Adib 2011-10-24 16:55:23 -07:00
parent b428552e87
commit a7278b7fbc
25 changed files with 7581 additions and 7588 deletions
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101
worker/processor_handler.js
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@ -1,101 +0,0 @@
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
'use strict';
var WorkerProcessorHandler = {
setup: function(handler) {
var pdfDoc = null;
handler.on('doc', function(data) {
// Create only the model of the PDFDoc, which is enough for
// processing the content of the pdf.
pdfDoc = new PDFDocModel(new Stream(data));
});
handler.on('page_request', function(pageNum) {
pageNum = parseInt(pageNum);
var page = pdfDoc.getPage(pageNum);
// The following code does quite the same as
// Page.prototype.startRendering, but stops at one point and sends the
// result back to the main thread.
var gfx = new CanvasGraphics(null);
var start = Date.now();
var dependency = [];
// Pre compile the pdf page and fetch the fonts/images.
var IRQueue = page.getIRQueue(handler, dependency);
console.log('page=%d - getIRQueue: time=%dms, len=%d', pageNum,
Date.now() - start, IRQueue.fnArray.length);
// Filter the dependecies for fonts.
var fonts = {};
for (var i = 0; i < dependency.length; i++) {
var dep = dependency[i];
if (dep.indexOf('font_') == 0) {
fonts[dep] = true;
}
}
handler.send('page', {
pageNum: pageNum,
IRQueue: IRQueue,
depFonts: Object.keys(fonts)
});
}, this);
handler.on('font', function(data) {
var objId = data[0];
var name = data[1];
var file = data[2];
var properties = data[3];
var font = {
name: name,
file: file,
properties: properties
};
// Some fonts don't have a file, e.g. the build in ones like Arial.
if (file) {
var fontFileDict = new Dict();
fontFileDict.map = file.dict.map;
var fontFile = new Stream(file.bytes, file.start,
file.end - file.start, fontFileDict);
// Check if this is a FlateStream. Otherwise just use the created
// Stream one. This makes complex_ttf_font.pdf work.
var cmf = file.bytes[0];
if ((cmf & 0x0f) == 0x08) {
font.file = new FlateStream(fontFile);
} else {
font.file = fontFile;
}
}
var obj = new Font(font.name, font.file, font.properties);
var str = '';
var data = obj.data;
if (data) {
var length = data.length;
for (var j = 0; j < length; j++)
str += String.fromCharCode(data[j]);
}
obj.str = str;
// Remove the data array form the font object, as it's not needed
// anymore as we sent over the ready str.
delete obj.data;
handler.send('font_ready', [objId, obj]);
});
}
};