Julian Viereck
14 years ago
7 changed files with 154 additions and 122 deletions
@ -0,0 +1,63 @@
@@ -0,0 +1,63 @@
|
||||
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- / |
||||
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ |
||||
|
||||
'use strict'; |
||||
|
||||
//
|
||||
importScripts('console.js'); |
||||
importScripts('event_handler.js'); |
||||
importScripts('../pdf.js'); |
||||
importScripts('../fonts.js'); |
||||
importScripts('../crypto.js'); |
||||
importScripts('../glyphlist.js'); |
||||
|
||||
// Listen for messages from the main thread.
|
||||
var pdfDoc = null; |
||||
|
||||
var handler = new MessageHandler({ |
||||
"doc": function(data) { |
||||
pdfDocument = new PDFDoc(new Stream(data)); |
||||
console.log("setup pdfDoc"); |
||||
}, |
||||
|
||||
"page": function(pageNum) { |
||||
pageNum = parseInt(pageNum); |
||||
console.log("about to process page", pageNum); |
||||
|
||||
var page = pdfDocument.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(canvasCtx); |
||||
var fonts = []; |
||||
// TODO: Figure out how image loading is handled inside the worker.
|
||||
var images = new ImagesLoader(); |
||||
|
||||
// Pre compile the pdf page and fetch the fonts/images.
|
||||
var preCompilation = page.preCompile(gfx, fonts, images); |
||||
|
||||
// Extract the minimum of font data that is required to build all required
|
||||
// font stuff on the main thread.
|
||||
var fontsMin = []; |
||||
for (var i = 0; i < fonts.length; i++) { |
||||
var font = fonts[i]; |
||||
|
||||
fontsMin.push({ |
||||
name: orgFont.name, |
||||
file: orgFont.file, |
||||
properties: orgFont.properties |
||||
}); |
||||
} |
||||
|
||||
// TODO: Handle images here.
|
||||
|
||||
handler.send("page", { |
||||
pageNum: pageNum, |
||||
fonts: fontsMin, |
||||
images: [], |
||||
preCompilation: preCompilation, |
||||
}); |
||||
} |
||||
}, postMessage); |
||||
|
||||
onmessage = handler.onMessage; |
||||
@ -0,0 +1,23 @@
@@ -0,0 +1,23 @@
|
||||
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- / |
||||
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ |
||||
|
||||
'use strict'; |
||||
|
||||
|
||||
function MessageHandler(actionHandler, postMessage, scope) { |
||||
this.onMessage = function(event) { |
||||
var data = event.data; |
||||
if (data.action in actionHandler) { |
||||
actionHandler[data.action].call(scope, data.data); |
||||
} else { |
||||
throw 'Unkown action from worker: ' + data.action; |
||||
} |
||||
}; |
||||
|
||||
this.send = function(actionName, data) { |
||||
postMessage({ |
||||
action: actionName, |
||||
data: data |
||||
}); |
||||
} |
||||
} |
||||
@ -1,95 +0,0 @@
@@ -1,95 +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 consoleTimer = {}; |
||||
var console = { |
||||
log: function log() { |
||||
var args = Array.prototype.slice.call(arguments); |
||||
postMessage({ |
||||
action: 'log', |
||||
data: args |
||||
}); |
||||
}, |
||||
|
||||
time: function(name) { |
||||
consoleTimer[name] = Date.now(); |
||||
}, |
||||
|
||||
timeEnd: function(name) { |
||||
var time = consoleTimer[name]; |
||||
if (time == null) { |
||||
throw 'Unkown timer name ' + name; |
||||
} |
||||
this.log('Timer:', name, Date.now() - time); |
||||
} |
||||
}; |
||||
|
||||
//
|
||||
importScripts('console.js'); |
||||
importScripts('canvas.js'); |
||||
importScripts('../pdf.js'); |
||||
importScripts('../fonts.js'); |
||||
importScripts('../crypto.js'); |
||||
importScripts('../glyphlist.js'); |
||||
|
||||
// Use the JpegStreamProxy proxy.
|
||||
JpegStream = JpegStreamProxy; |
||||
|
||||
// Create the WebWorkerProxyCanvas.
|
||||
var canvas = new CanvasProxy(1224, 1584); |
||||
|
||||
// Listen for messages from the main thread.
|
||||
var pdfDocument = null; |
||||
onmessage = function(event) { |
||||
var data = event.data; |
||||
// If there is no pdfDocument yet, then the sent data is the PDFDocument.
|
||||
if (!pdfDocument) { |
||||
pdfDocument = new PDFDoc(new Stream(data)); |
||||
postMessage({ |
||||
action: 'pdf_num_pages', |
||||
data: pdfDocument.numPages |
||||
}); |
||||
return; |
||||
} |
||||
// User requested to render a certain page.
|
||||
else { |
||||
console.time('compile'); |
||||
|
||||
// Let's try to render the first page...
|
||||
var page = pdfDocument.getPage(parseInt(data)); |
||||
|
||||
var pdfToCssUnitsCoef = 96.0 / 72.0; |
||||
var pageWidth = (page.mediaBox[2] - page.mediaBox[0]) * pdfToCssUnitsCoef; |
||||
var pageHeight = (page.mediaBox[3] - page.mediaBox[1]) * pdfToCssUnitsCoef; |
||||
postMessage({ |
||||
action: 'setup_page', |
||||
data: pageWidth + ',' + pageHeight |
||||
}); |
||||
|
||||
// Set canvas size.
|
||||
canvas.width = pageWidth; |
||||
canvas.height = pageHeight; |
||||
|
||||
// page.compile will collect all fonts for us, once we have loaded them
|
||||
// we can trigger the actual page rendering with page.display
|
||||
var fonts = []; |
||||
var gfx = new CanvasGraphics(canvas.getContext('2d'), CanvasProxy); |
||||
page.compile(gfx, fonts); |
||||
console.timeEnd('compile'); |
||||
|
||||
// Send fonts to the main thread.
|
||||
console.time('fonts'); |
||||
postMessage({ |
||||
action: 'fonts', |
||||
data: fonts |
||||
}); |
||||
console.timeEnd('fonts'); |
||||
|
||||
console.time('display'); |
||||
page.display(gfx); |
||||
canvas.flush(); |
||||
console.timeEnd('display'); |
||||
} |
||||
}; |
||||
Loading…
Reference in new issue