Sakurai/pdf.js
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Merge branch 'master' into tiling

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sbarman 2011-06-19 12:15:52 -07:00
commit 07b6ee2d03
17 changed files with 1105 additions and 61 deletions
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3
LICENSE
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@ -4,6 +4,9 @@
Contributors: Andreas Gal <gal@mozilla.com>
Chris G Jones <cjones@mozilla.com>
Shaon Barman <shaon.barman@gmail.com>
Vivien Nicolas <21@vingtetun.org>
Justin D'Arcangelo <justindarc@gmail.com>
Yury Delendik
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),

46
fonts.js
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@ -1,6 +1,8 @@
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
"use strict";
/**
* Maximum file size of the font.
*/
@ -30,6 +32,7 @@ var fontCount = 0;
*/
var Fonts = {
_active: null,
get active() {
return this._active;
},
@ -38,12 +41,34 @@ var Fonts = {
this._active = this[aName];
},
unicodeFromCode: function fonts_unicodeFromCode(aCode) {
chars2Unicode: function(chars) {
var active = this._active;
if (!active || !active.properties.encoding)
return aCode;
if (!active)
return chars;
return GlyphsUnicode[active.properties.encoding[aCode]];
// if we translated this string before, just grab it from the cache
var ret = active.cache[chars];
if (ret)
return ret;
// translate the string using the font's encoding
var encoding = active.properties.encoding;
if (!encoding)
return chars;
var ret = "";
for (var i = 0; i < chars.length; ++i) {
var ch = chars.charCodeAt(i);
var uc = encoding[ch];
if (uc instanceof Name) // we didn't convert the glyph yet
uc = encoding[ch] = GlyphsUnicode[uc.name];
ret += String.fromCharCode(uc);
}
// enter the translated string into the cache
active.cache[chars] = ret;
return ret;
}
};
@ -83,7 +108,8 @@ var Font = function(aName, aFile, aProperties) {
encoding: {},
charset: null
},
loading: false
loading: false,
cache: Object.create(null)
};
this.mimetype = "font/ttf";
@ -99,7 +125,8 @@ var Font = function(aName, aFile, aProperties) {
Fonts[aName] = {
data: this.font,
properties: aProperties,
loading: true
loading: true,
cache: Object.create(null)
}
// Attach the font to the document
@ -178,7 +205,7 @@ Font.prototype = {
}
}
ctx.font = "bold italic 20px " + fontName + ", Symbol, Arial";
var textWidth = ctx.mozMeasureText(testString);
var textWidth = ctx.measureText(testString).width;
if (debug)
ctx.fillText(testString, 20, 20);
@ -193,7 +220,7 @@ Font.prototype = {
window.clearInterval(interval);
Fonts[fontName].loading = false;
warn("Is " + fontName + " for charset: " + charset + " loaded?");
} else if (textWidth != ctx.mozMeasureText(testString)) {
} else if (textWidth != ctx.measureText(testString).width) {
window.clearInterval(interval);
Fonts[fontName].loading = false;
}
@ -1017,7 +1044,8 @@ var Type1Parser = function() {
this.extractFontProgram = function t1_extractFontProgram(aStream) {
var eexecString = decrypt(aStream, kEexecEncryptionKey, 4);
var subrs = [], glyphs = [];
var inSubrs = inGlyphs = false;
var inGlyphs = false;
var inSubrs = false;
var glyph = "";
var token = "";

5
glyphlist.js
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@ -1,3 +1,8 @@
/* -*- 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 GlyphsUnicode = {
A: 0x0041,
AE: 0x00C6,

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multi-page-viewer.css Normal file
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@ -0,0 +1,123 @@
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- /
/* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
body {
background-color: #929292;
font-family: 'Lucida Grande', 'Lucida Sans Unicode', Helvetica, Arial, Verdana, sans-serif;
margin: 0px;
padding: 0px;
}
canvas {
box-shadow: 0px 4px 10px #000;
-moz-box-shadow: 0px 4px 10px #000;
-webkit-box-shadow: 0px 4px 10px #000;
}
span {
font-size: 0.8em;
}
.control {
display: inline-block;
float: left;
margin: 0px 20px 0px 0px;
padding: 0px 4px 0px 0px;
}
.control > input {
float: left;
margin: 0px 2px 0px 0px;
}
.control > span {
cursor: default;
float: left;
height: 18px;
margin: 5px 2px 0px;
padding: 0px;
user-select: none;
-moz-user-select: none;
-webkit-user-select: none;
}
.control .label {
clear: both;
float: left;
font-size: 0.65em;
margin: 2px 0px 0px;
position: relative;
text-align: center;
width: 100%;
}
.page {
width: 816px;
height: 1056px;
margin: 10px auto;
}
#controls {
background-color: #eee;
border-bottom: 1px solid #666;
padding: 4px 0px 0px 8px;
position:fixed;
left: 0px;
top: 0px;
height: 40px;
width: 100%;
box-shadow: 0px 2px 8px #000;
-moz-box-shadow: 0px 2px 8px #000;
-webkit-box-shadow: 0px 2px 8px #000;
}
#controls input {
user-select: text;
-moz-user-select: text;
-webkit-user-select: text;
}
#previousPageButton {
background: url('images/buttons.png') no-repeat 0px -23px;
cursor: pointer;
display: inline-block;
float: left;
margin: 0px;
width: 28px;
height: 23px;
}
#previousPageButton.down {
background: url('images/buttons.png') no-repeat 0px -46px;
}
#previousPageButton.disabled {
background: url('images/buttons.png') no-repeat 0px 0px;
}
#nextPageButton {
background: url('images/buttons.png') no-repeat -28px -23px;
cursor: pointer;
display: inline-block;
float: left;
margin: 0px;
width: 28px;
height: 23px;
}
#nextPageButton.down {
background: url('images/buttons.png') no-repeat -28px -46px;
}
#nextPageButton.disabled {
background: url('images/buttons.png') no-repeat -28px 0px;
}
#pageNumber, #scale {
text-align: right;
}
#viewer {
margin: 44px 0px 0px;
padding: 8px 0px;
}

31
multi-page-viewer.html Normal file
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@ -0,0 +1,31 @@
<!DOCTYPE html>
<html>
<head>
<title>pdf.js Multi-Page Viewer</title>
<link rel="stylesheet" href="multi-page-viewer.css" type="text/css" media="screen" charset="utf-8"/>
<script type="text/javascript" src="pdf.js"></script>
<script type="text/javascript" src="fonts.js"></script>
<script type="text/javascript" src="glyphlist.js"></script>
<script type="text/javascript" src="multi-page-viewer.js"></script>
</head>
<body>
<div id="controls">
<span class="control">
<span id="previousPageButton"></span><span id="nextPageButton"></span>
<span class="label">Previous/Next</span>
</span>
<span class="control">
<input type="text" id="pageNumber" value="1" size="2"/>
<span>/</span>
<span id="numPages">--</span>
<span class="label">Page Number</span>
</span>
<span class="control">
<input type="text" id="scale" value="100" size="2"/>
<span>%</span>
<span class="label">Zoom</span>
</span>
</div>
<div id="viewer"></div>
</body>
</html>

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multi-page-viewer.js Normal file
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@ -0,0 +1,370 @@
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- /
/* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
"use strict";
var PDFViewer = {
queryParams: {},
element: null,
pageNumberInput: null,
previousPageButton: null,
nextPageButton: null,
willJumpToPage: false,
pdf: null,
url: 'compressed.tracemonkey-pldi-09.pdf',
pageNumber: 1,
numberOfPages: 1,
scale: 1.0,
pageWidth: function() {
return 816 * PDFViewer.scale;
},
pageHeight: function() {
return 1056 * PDFViewer.scale;
},
lastPagesDrawn: [],
visiblePages: function() {
var pageHeight = PDFViewer.pageHeight() + 20; // Add 20 for the margins.
var windowTop = window.pageYOffset;
var windowBottom = window.pageYOffset + window.innerHeight;
var pageStartIndex = Math.floor(windowTop / pageHeight);
var pageStopIndex = Math.ceil(windowBottom / pageHeight);
var pages = [];
for (var i = pageStartIndex; i <= pageStopIndex; i++) {
pages.push(i + 1);
}
return pages;
},
createPage: function(num) {
var anchor = document.createElement('a');
anchor.name = '' + num;
var div = document.createElement('div');
div.id = 'pageContainer' + num;
div.className = 'page';
div.style.width = PDFViewer.pageWidth() + 'px';
div.style.height = PDFViewer.pageHeight() + 'px';
PDFViewer.element.appendChild(anchor);
PDFViewer.element.appendChild(div);
},
removePage: function(num) {
var div = document.getElementById('pageContainer' + num);
if (div && div.hasChildNodes()) {
while (div.childNodes.length > 0) {
div.removeChild(div.firstChild);
}
}
},
drawPage: function(num) {
if (PDFViewer.pdf) {
var page = PDFViewer.pdf.getPage(num);
var div = document.getElementById('pageContainer' + num);
if (div && !div.hasChildNodes()) {
var canvas = document.createElement('canvas');
canvas.id = 'page' + num;
canvas.mozOpaque = true;
// Canvas dimensions must be specified in CSS pixels. CSS pixels
// are always 96 dpi. These dimensions are 8.5in x 11in at 96dpi.
canvas.width = PDFViewer.pageWidth();
canvas.height = PDFViewer.pageHeight();
var ctx = canvas.getContext('2d');
ctx.save();
ctx.fillStyle = 'rgb(255, 255, 255)';
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.restore();
var gfx = new CanvasGraphics(ctx);
var fonts = [];
// page.compile will collect all fonts for us, once we have loaded them
// we can trigger the actual page rendering with page.display
page.compile(gfx, fonts);
var fontsReady = true;
// Inspect fonts and translate the missing one
var fontCount = fonts.length;
for (var i = 0; i < fontCount; i++) {
var font = fonts[i];
if (Fonts[font.name]) {
fontsReady = fontsReady && !Fonts[font.name].loading;
continue;
}
new Font(font.name, font.file, font.properties);
fontsReady = false;
}
var pageInterval;
var delayLoadFont = function() {
for (var i = 0; i < fontCount; i++) {
if (Fonts[font.name].loading) {
return;
}
}
clearInterval(pageInterval);
PDFViewer.drawPage(num);
}
if (!fontsReady) {
pageInterval = setInterval(delayLoadFont, 10);
return;
}
page.display(gfx);
div.appendChild(canvas);
}
}
},
changeScale: function(num) {
while (PDFViewer.element.childNodes.length > 0) {
PDFViewer.element.removeChild(PDFViewer.element.firstChild);
}
PDFViewer.scale = num / 100;
if (PDFViewer.pdf) {
for (var i = 1; i <= PDFViewer.numberOfPages; i++) {
PDFViewer.createPage(i);
}
if (PDFViewer.numberOfPages > 0) {
PDFViewer.drawPage(1);
}
}
},
goToPage: function(num) {
if (1 <= num && num <= PDFViewer.numberOfPages) {
PDFViewer.pageNumber = num;
PDFViewer.pageNumberInput.value = PDFViewer.pageNumber;
PDFViewer.willJumpToPage = true;
document.location.hash = PDFViewer.pageNumber;
PDFViewer.previousPageButton.className = (PDFViewer.pageNumber === 1) ?
'disabled' : '';
PDFViewer.nextPageButton.className = (PDFViewer.pageNumber === PDFViewer.numberOfPages) ?
'disabled' : '';
}
},
goToPreviousPage: function() {
if (PDFViewer.pageNumber > 1) {
PDFViewer.goToPage(--PDFViewer.pageNumber);
}
},
goToNextPage: function() {
if (PDFViewer.pageNumber < PDFViewer.numberOfPages) {
PDFViewer.goToPage(++PDFViewer.pageNumber);
}
},
open: function(url) {
PDFViewer.url = url;
document.title = url;
var req = new XMLHttpRequest();
req.open('GET', url);
req.mozResponseType = req.responseType = 'arraybuffer';
req.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200;
req.onreadystatechange = function() {
if (req.readyState === 4 && req.status === req.expected) {
var data = req.mozResponseArrayBuffer ||
req.mozResponse ||
req.responseArrayBuffer ||
req.response;
PDFViewer.pdf = new PDFDoc(new Stream(data));
PDFViewer.numberOfPages = PDFViewer.pdf.numPages;
document.getElementById('numPages').innerHTML = PDFViewer.numberOfPages.toString();
for (var i = 1; i <= PDFViewer.numberOfPages; i++) {
PDFViewer.createPage(i);
}
if (PDFViewer.numberOfPages > 0) {
PDFViewer.drawPage(1);
}
}
};
req.send(null);
}
};
window.onload = function() {
// Parse the URL query parameters into a cached object.
PDFViewer.queryParams = function() {
var qs = window.location.search.substring(1);
var kvs = qs.split('&');
var params = {};
for (var i = 0; i < kvs.length; ++i) {
var kv = kvs[i].split('=');
params[unescape(kv[0])] = unescape(kv[1]);
}
return params;
}();
PDFViewer.element = document.getElementById('viewer');
PDFViewer.pageNumberInput = document.getElementById('pageNumber');
PDFViewer.pageNumberInput.onkeydown = function(evt) {
var charCode = evt.charCode || evt.keyCode;
// Up arrow key.
if (charCode === 38) {
PDFViewer.goToNextPage();
this.select();
}
// Down arrow key.
else if (charCode === 40) {
PDFViewer.goToPreviousPage();
this.select();
}
// All other non-numeric keys (excluding Left arrow, Right arrow,
// Backspace, and Delete keys).
else if ((charCode < 48 || charCode > 57) &&
charCode !== 8 && // Backspace
charCode !== 46 && // Delete
charCode !== 37 && // Left arrow
charCode !== 39 // Right arrow
) {
return false;
}
return true;
};
PDFViewer.pageNumberInput.onkeyup = function(evt) {
var charCode = evt.charCode || evt.keyCode;
// All numeric keys, Backspace, and Delete.
if ((charCode >= 48 && charCode <= 57) ||
charCode === 8 || // Backspace
charCode === 46 // Delete
) {
PDFViewer.goToPage(this.value);
}
this.focus();
};
PDFViewer.previousPageButton = document.getElementById('previousPageButton');
PDFViewer.previousPageButton.onclick = function(evt) {
if (this.className.indexOf('disabled') === -1) {
PDFViewer.goToPreviousPage();
}
};
PDFViewer.previousPageButton.onmousedown = function(evt) {
if (this.className.indexOf('disabled') === -1) {
this.className = 'down';
}
};
PDFViewer.previousPageButton.onmouseup = function(evt) {
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
};
PDFViewer.previousPageButton.onmouseout = function(evt) {
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
};
PDFViewer.nextPageButton = document.getElementById('nextPageButton');
PDFViewer.nextPageButton.onclick = function(evt) {
if (this.className.indexOf('disabled') === -1) {
PDFViewer.goToNextPage();
}
};
PDFViewer.nextPageButton.onmousedown = function(evt) {
if (this.className.indexOf('disabled') === -1) {
this.className = 'down';
}
};
PDFViewer.nextPageButton.onmouseup = function(evt) {
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
};
PDFViewer.nextPageButton.onmouseout = function(evt) {
this.className = (this.className.indexOf('disabled') !== -1) ? 'disabled' : '';
};
var scaleInput = document.getElementById('scale');
scaleInput.onchange = function(evt) {
PDFViewer.changeScale(this.value);
};
PDFViewer.pageNumber = parseInt(PDFViewer.queryParams.page) || PDFViewer.pageNumber;
PDFViewer.scale = parseInt(scaleInput.value) / 100 || 1.0;
PDFViewer.open(PDFViewer.queryParams.file || PDFViewer.url);
window.onscroll = function(evt) {
var lastPagesDrawn = PDFViewer.lastPagesDrawn;
var visiblePages = PDFViewer.visiblePages();
var pagesToDraw = [];
var pagesToKeep = [];
var pagesToRemove = [];
var i;
// Determine which visible pages were not previously drawn.
for (i = 0; i < visiblePages.length; i++) {
if (lastPagesDrawn.indexOf(visiblePages[i]) === -1) {
pagesToDraw.push(visiblePages[i]);
PDFViewer.drawPage(visiblePages[i]);
} else {
pagesToKeep.push(visiblePages[i]);
}
}
// Determine which previously drawn pages are no longer visible.
for (i = 0; i < lastPagesDrawn.length; i++) {
if (visiblePages.indexOf(lastPagesDrawn[i]) === -1) {
pagesToRemove.push(lastPagesDrawn[i]);
PDFViewer.removePage(lastPagesDrawn[i]);
}
}
PDFViewer.lastPagesDrawn = pagesToDraw.concat(pagesToKeep);
// Update the page number input with the current page number.
if (!PDFViewer.willJumpToPage && visiblePages.length > 0) {
PDFViewer.pageNumber = PDFViewer.pageNumberInput.value = visiblePages[0];
PDFViewer.previousPageButton.className = (PDFViewer.pageNumber === 1) ?
'disabled' : '';
PDFViewer.nextPageButton.className = (PDFViewer.pageNumber === PDFViewer.numberOfPages) ?
'disabled' : '';
} else {
PDFViewer.willJumpToPage = false;
}
};
};

223
pdf.js
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@ -1,11 +1,12 @@
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- /
/* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
"use strict";
var ERRORS = 0, WARNINGS = 1, TODOS = 5;
var verbosity = WARNINGS;
function log(msg) {
msg = msg.toString ? msg.toString() : msg;
if (console && console.log)
console.log(msg);
else if (print)
@ -390,6 +391,12 @@ var FlateStream = (function() {
return [codes, maxLen];
},
readBlock: function() {
function repeat(stream, array, len, offset, what) {
var repeat = stream.getBits(len) + offset;
while (repeat-- > 0)
array[i++] = what;
}
var stream = this.stream;
// read block header
@ -450,11 +457,6 @@ var FlateStream = (function() {
var codes = numLitCodes + numDistCodes;
var codeLengths = new Array(codes);
while (i < codes) {
function repeat(stream, array, len, offset, what) {
var repeat = stream.getBits(len) + offset;
while (repeat-- > 0)
array[i++] = what;
}
var code = this.getCode(codeLenCodeTab);
if (code == 16) {
repeat(this, codeLengths, 2, 3, len);
@ -507,6 +509,94 @@ var FlateStream = (function() {
return constructor;
})();
var PredictorStream = (function() {
function constructor(stream, params) {
this.stream = stream;
this.predictor = params.get("Predictor") || 1;
if (this.predictor <= 1) {
return stream; // no prediction
}
if (params.has("EarlyChange")) {
error("EarlyChange predictor parameter is not supported");
}
this.colors = params.get("Colors") || 1;
this.bitsPerComponent = params.get("BitsPerComponent") || 8;
this.columns = params.get("Columns") || 1;
if (this.colors !== 1 || this.bitsPerComponent !== 8) {
error("Multi-color and multi-byte predictors are not supported");
}
if (this.predictor < 10 || this.predictor > 15) {
error("Unsupported predictor");
}
this.currentRow = new Uint8Array(this.columns);
this.pos = 0;
this.bufferLength = 0;
}
constructor.prototype = {
readRow : function() {
var lastRow = this.currentRow;
var predictor = this.stream.getByte();
var currentRow = this.stream.getBytes(this.columns), i;
switch (predictor) {
default:
error("Unsupported predictor");
break;
case 0:
break;
case 2:
for (i = 0; i < currentRow.length; ++i) {
currentRow[i] = (lastRow[i] + currentRow[i]) & 0xFF;
}
break;
}
this.pos = 0;
this.bufferLength = currentRow.length;
this.currentRow = currentRow;
},
getByte : function() {
if (this.pos >= this.bufferLength) {
this.readRow();
}
return this.currentRow[this.pos++];
},
getBytes : function(n) {
var i, bytes;
bytes = new Uint8Array(n);
for (i = 0; i < n; ++i) {
if (this.pos >= this.bufferLength) {
this.readRow();
}
bytes[i] = this.currentRow[this.pos++];
}
return bytes;
},
getChar : function() {
return String.formCharCode(this.getByte());
},
lookChar : function() {
if (this.pos >= this.bufferLength) {
this.readRow();
}
return String.formCharCode(this.currentRow[this.pos]);
},
skip : function(n) {
var i;
if (!n) {
n = 1;
}
while (n > this.bufferLength - this.pos) {
n -= this.bufferLength - this.pos;
this.readRow();
if (this.bufferLength === 0) break;
}
this.pos += n;
}
};
return constructor;
})();
var DecryptStream = (function() {
function constructor(str, fileKey, encAlgorithm, keyLength) {
// TODO
@ -523,9 +613,6 @@ var Name = (function() {
}
constructor.prototype = {
toString: function() {
return this.name;
}
};
return constructor;
@ -537,9 +624,6 @@ var Cmd = (function() {
}
constructor.prototype = {
toString: function() {
return this.cmd;
}
};
return constructor;
@ -566,12 +650,6 @@ var Dict = (function() {
forEach: function(aCallback) {
for (var key in this.map)
aCallback(key, this.map[key]);
},
toString: function() {
var keys = [];
for (var key in this.map)
keys.push(key);
return "Dict with " + keys.length + " keys: " + keys;
}
};
@ -738,6 +816,7 @@ var Lexer = (function() {
var done = false;
var str = "";
var stream = this.stream;
var ch;
do {
switch (ch = stream.getChar()) {
case undefined:
@ -1098,7 +1177,9 @@ var Parser = (function() {
this.encAlgorithm,
this.keyLength);
}
return this.filter(stream, dict);
stream = this.filter(stream, dict);
stream.parameters = dict;
return stream;
},
filter: function(stream, dict) {
var filter = dict.get2("Filter", "F");
@ -1123,8 +1204,9 @@ var Parser = (function() {
},
makeFilter: function(stream, name, params) {
if (name == "FlateDecode" || name == "Fl") {
if (params)
error("params not supported yet for FlateDecode");
if (params) {
return new PredictorStream(new FlateStream(stream), params);
}
return new FlateStream(stream);
} else {
error("filter '" + name + "' not supported yet");
@ -1217,10 +1299,10 @@ var XRef = (function() {
this.stream = stream;
this.entries = [];
this.xrefstms = {};
this.readXRef(startXRef);
var trailerDict = this.readXRef(startXRef);
// get the root dictionary (catalog) object
if (!IsRef(this.root = this.trailerDict.get("Root")))
if (!IsRef(this.root = trailerDict.get("Root")))
error("Invalid root reference");
// prepare the XRef cache
@ -1275,18 +1357,18 @@ var XRef = (function() {
error("Invalid XRef table");
// get the 'Prev' pointer
var more = false;
var prev;
obj = dict.get("Prev");
if (IsInt(obj)) {
this.prev = obj;
more = true;
prev = obj;
} else if (IsRef(obj)) {
// certain buggy PDF generators generate "/Prev NNN 0 R" instead
// of "/Prev NNN"
this.prev = obj.num;
more = true;
prev = obj.num;
}
if (prev) {
this.readXRef(prev);
}
this.trailerDict = dict;
// check for 'XRefStm' key
if (IsInt(obj = dict.get("XRefStm"))) {
@ -1296,11 +1378,64 @@ var XRef = (function() {
this.xrefstms[pos] = 1; // avoid infinite recursion
this.readXRef(pos);
}
return more;
return dict;
},
readXRefStream: function(parser) {
error("Invalid XRef stream");
readXRefStream: function(stream) {
var streamParameters = stream.parameters;
var length = streamParameters.get("Length");
var byteWidths = streamParameters.get("W");
var range = streamParameters.get("Index");
if (!range) {
range = [0, streamParameters.get("Size")];
}
var i, j;
while (range.length > 0) {
var first = range[0], n = range[1];
if (!IsInt(first) || !IsInt(n)) {
error("Invalid XRef range fields");
}
var typeFieldWidth = byteWidths[0], offsetFieldWidth = byteWidths[1], generationFieldWidth = byteWidths[2];
if (!IsInt(typeFieldWidth) || !IsInt(offsetFieldWidth) || !IsInt(generationFieldWidth)) {
error("Invalid XRef entry fields length");
}
for (i = 0; i < n; ++i) {
var type = 0, offset = 0, generation = 0;
for (j = 0; j < typeFieldWidth; ++j) {
type = (type << 8) | stream.getByte();
}
for (j = 0; j < offsetFieldWidth; ++j) {
offset = (offset << 8) | stream.getByte();
}
for (j = 0; j < generationFieldWidth; ++j) {
generation = (generation << 8) | stream.getByte();
}
var entry = { offset: offset, gen: generation };
if (typeFieldWidth > 0) {
switch (type) {
case 0:
entry.free = true;
break;
case 1:
entry.uncompressed = true;
break;
case 2:
break;
default:
error("Invalid XRef entry type");
break;
}
}
if (!this.entries[first + i]) {
this.entries[first + i] = entry;
}
}
range.splice(0, 2);
}
var prev = streamParameters.get("Prev");
if (IsInt(prev)) {
this.readXRef(prev);
}
return streamParameters;
},
readXRef: function(startXRef) {
var stream = this.stream;
@ -1442,7 +1577,7 @@ var Catalog = (function() {
return shadow(this, "toplevelPagesDict", obj);
},
get numPages() {
obj = this.toplevelPagesDict.get("Count");
var obj = this.toplevelPagesDict.get("Count");
assertWellFormed(IsInt(obj),
"page count in top level pages object is not an integer");
// shadow the prototype getter
@ -1584,7 +1719,7 @@ var PDFDoc = (function() {
},
getPage: function(n) {
var linearization = this.linearization;
assert(!linearization, "linearized page access not implemented");
// assert(!linearization, "linearized page access not implemented");
return this.catalog.getPage(n);
}
};
@ -1925,9 +2060,11 @@ var CanvasGraphics = (function() {
// Get the font charset if any
var charset = descriptor.get("CharSet");
assertWellFormed(IsString(charset), "invalid charset");
if (charset) {
assertWellFormed(IsString(charset), "invalid charset");
charset = charset.split("/");
charset = charset.split("/");
}
} else if (IsName(encoding)) {
var encoding = Encodings[encoding.name];
if (!encoding)
@ -1935,7 +2072,7 @@ var CanvasGraphics = (function() {
var widths = xref.fetchIfRef(fontDict.get("Widths"));
var firstChar = xref.fetchIfRef(fontDict.get("FirstChar"));
assertWellFormed(IsArray(widths) && IsInteger(firstChar),
assertWellFormed(IsArray(widths) && IsInt(firstChar),
"invalid font Widths or FirstChar");
var charset = [];
for (var j = 0; j < widths.length; j++) {
@ -2245,13 +2382,7 @@ var CanvasGraphics = (function() {
this.ctx.translate(0, 2 * this.current.y);
this.ctx.scale(1, -1);
this.ctx.transform.apply(this.ctx, this.current.textMatrix);
// Replace characters code by glyphs code
var glyphs = [];
for (var i = 0; i < text.length; i++)
glyphs[i] = String.fromCharCode(Fonts.unicodeFromCode(text[i].charCodeAt(0)));
this.ctx.fillText(glyphs.join(""), this.current.x, this.current.y);
this.ctx.fillText(Fonts.chars2Unicode(text), this.current.x, this.current.y);
this.current.x += this.ctx.measureText(text).width;
this.ctx.restore();
@ -2514,7 +2645,7 @@ var CanvasGraphics = (function() {
error("No support for array of functions");
else if (!IsPDFFunction(fnObj))
error("Invalid function");
fn = new PDFFunction(this.xref, fnObj);
var fn = new PDFFunction(this.xref, fnObj);
var gradient = this.ctx.createLinearGradient(x0, y0, x1, y1);

175
test.py Normal file
View File

@ -0,0 +1,175 @@
import json, os, sys, subprocess
from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
ANAL = True
VERBOSE = False
MIMEs = {
'.css': 'text/css',
'.html': 'text/html',
'.js': 'application/json',
'.json': 'application/json',
'.pdf': 'application/pdf',
'.xhtml': 'application/xhtml+xml',
}
class State:
browsers = [ ]
manifest = { }
taskResults = { }
remaining = 0
results = { }
done = False
class Result:
def __init__(self, snapshot, failure):
self.snapshot = snapshot
self.failure = failure
class PDFTestHandler(BaseHTTPRequestHandler):
# Disable annoying noise by default
def log_request(code=0, size=0):
if VERBOSE:
BaseHTTPRequestHandler.log_request(code, size)
def do_GET(self):
cwd = os.getcwd()
path = os.path.abspath(os.path.realpath(cwd + os.sep + self.path))
cwd = os.path.abspath(cwd)
prefix = os.path.commonprefix(( path, cwd ))
_, ext = os.path.splitext(path)
if not (prefix == cwd
and os.path.isfile(path)
and ext in MIMEs):
self.send_error(404)
return
if 'Range' in self.headers:
# TODO for fetch-as-you-go
self.send_error(501)
return
self.send_response(200)
self.send_header("Content-Type", MIMEs[ext])
self.end_headers()
# Sigh, os.sendfile() plz
f = open(path)
self.wfile.write(f.read())
f.close()
def do_POST(self):
numBytes = int(self.headers['Content-Length'])
self.send_response(200)
self.send_header('Content-Type', 'text/plain')
self.end_headers()
result = json.loads(self.rfile.read(numBytes))
browser = 'firefox4'
id, failure, round, page, snapshot = result['id'], result['failure'], result['round'], result['page'], result['snapshot']
taskResults = State.taskResults[browser][id]
taskResults[round][page - 1] = Result(snapshot, failure)
if result['taskDone']:
check(State.manifest[id], taskResults, browser)
State.remaining -= 1
State.done = (0 == State.remaining)
def set_up():
# Only serve files from a pdf.js clone
assert not ANAL or os.path.isfile('pdf.js') and os.path.isdir('.git')
testBrowsers = [ b for b in
( 'firefox4', )
#'chrome12', 'chrome13', 'firefox5', 'firefox6','opera11' ):
if os.access(b, os.R_OK | os.X_OK) ]
mf = open('test_manifest.json')
manifestList = json.load(mf)
mf.close()
for b in testBrowsers:
State.taskResults[b] = { }
for item in manifestList:
id, rounds = item['id'], int(item['rounds'])
State.manifest[id] = item
taskResults = [ ]
for r in xrange(rounds):
taskResults.append([ None ] * 100)
State.taskResults[b][id] = taskResults
State.remaining = len(manifestList)
for b in testBrowsers:
print 'Launching', b
subprocess.Popen(( os.path.abspath(os.path.realpath(b)),
'http://localhost:8080/test_slave.html' ))
def check(task, results, browser):
failed = False
for r in xrange(len(results)):
pageResults = results[r]
for p in xrange(len(pageResults)):
pageResult = pageResults[p]
if pageResult is None:
continue
failure = pageResult.failure
if failure:
failed = True
print 'TEST-UNEXPECTED-FAIL | test failed', task['id'], '| in', browser, '| page', p + 1, 'round', r, '|', failure
if failed:
return
kind = task['type']
if '==' == kind:
checkEq(task, results, browser)
elif 'fbf' == kind:
checkFBF(task, results, browser)
elif 'load' == kind:
checkLoad(task, results, browser)
else:
assert 0 and 'Unknown test type'
def checkEq(task, results, browser):
print ' !!! [TODO: == tests] !!!'
print 'TEST-PASS | == test', task['id'], '| in', browser
printed = [False]
def checkFBF(task, results, browser):
round0, round1 = results[0], results[1]
assert len(round0) == len(round1)
for page in xrange(len(round1)):
r0Page, r1Page = round0[page], round1[page]
if r0Page is None:
break
if r0Page.snapshot != r1Page.snapshot:
print 'TEST-UNEXPECTED-FAIL | forward-back-forward test', task['id'], '| in', browser, '| first rendering of page', page + 1, '!= second'
print 'TEST-PASS | forward-back-forward test', task['id'], '| in', browser
def checkLoad(task, results, browser):
# Load just checks for absence of failure, so if we got here the
# test has passed
print 'TEST-PASS | load test', task['id'], '| in', browser
def main():
set_up()
server = HTTPServer(('127.0.0.1', 8080), PDFTestHandler)
while not State.done:
server.handle_request()
if __name__ == '__main__':
main()

17
test_manifest.json Normal file
View File

@ -0,0 +1,17 @@
[
{ "id": "tracemonkey-==",
"file": "tests/tracemonkey.pdf",
"rounds": 1,
"type": "=="
},
{ "id": "tracemonkey-fbf",
"file": "tests/tracemonkey.pdf",
"rounds": 2,
"type": "fbf"
},
{ "id": "html5-canvas-cheat-sheet-load",
"file": "tests/canvas.pdf",
"rounds": 1,
"type": "load"
}
]

149
test_slave.html Normal file
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@ -0,0 +1,149 @@
<html>
<head>
<title>pdf.js test slave</title>
<script type="text/javascript" src="pdf.js"></script>
<script type="text/javascript" src="fonts.js"></script>
<script type="text/javascript" src="glyphlist.js"></script>
<script type="application/javascript">
var canvas, currentTask, currentTaskIdx, failure, manifest, pdfDoc, stdout;
function load() {
canvas = document.createElement("canvas");
// 8.5x11in @ 100% ... XXX need something better here
canvas.width = 816;
canvas.height = 1056;
canvas.mozOpaque = true;
stdout = document.getElementById("stdout");
log("Fetching manifest ...");
var r = new XMLHttpRequest();
r.open("GET", "test_manifest.json", false);
r.onreadystatechange = function(e) {
if (r.readyState == 4) {
log("done\n");
manifest = JSON.parse(r.responseText);
currentTaskIdx = 0, nextTask();
}
};
r.send(null);
}
function nextTask() {
if (currentTaskIdx == manifest.length) {
return done();
}
currentTask = manifest[currentTaskIdx];
currentTask.round = 0;
log("Loading file "+ currentTask.file +"\n");
var r = new XMLHttpRequest();
r.open("GET", currentTask.file);
r.mozResponseType = r.responseType = "arraybuffer";
r.onreadystatechange = function() {
if (r.readyState == 4) {
var data = r.mozResponseArrayBuffer || r.mozResponse ||
r.responseArrayBuffer || r.response;
pdfDoc = new PDFDoc(new Stream(data));
currentTask.pageNum = 1, nextPage();
}
};
r.send(null);
}
function nextPage() {
if (currentTask.pageNum > pdfDoc.numPages) {
if (++currentTask.round < currentTask.rounds) {
log(" Round "+ (1 + currentTask.round) +"\n");
currentTask.pageNum = 1;
} else {
++currentTaskIdx, nextTask();
return;
}
}
failure = '';
log(" drawing page "+ currentTask.pageNum +"...");
currentPage = pdfDoc.getPage(currentTask.pageNum);
var ctx = canvas.getContext("2d");
clear(ctx);
var fonts = [];
var gfx = new CanvasGraphics(ctx);
try {
currentPage.compile(gfx, fonts);
} catch(e) {
failure = 'compile: '+ e.toString();
}
// TODO load fonts
setTimeout(function() {
if (!failure) {
try {
currentPage.display(gfx);
} catch(e) {
failure = 'render: '+ e.toString();
}
}
currentTask.taskDone = (currentTask.pageNum == pdfDoc.numPages
&& (1 + currentTask.round) == currentTask.rounds);
sendTaskResult(canvas.toDataURL("image/png"));
log("done"+ (failure ? " (failed!)" : "") +"\n");
++currentTask.pageNum, nextPage();
},
0
);
}
function done() {
log("Done!\n");
setTimeout(function() {
document.body.innerHTML = "Tests are finished. <h1>CLOSE ME!</h1>";
window.close();
},
100
);
}
function sendTaskResult(snapshot) {
var result = { id: currentTask.id,
taskDone: currentTask.taskDone,
failure: failure,
file: currentTask.file,
round: currentTask.round,
page: currentTask.pageNum,
snapshot: snapshot };
var r = new XMLHttpRequest();
// (The POST URI is ignored atm.)
r.open("POST", "submit_task_results", false);
r.setRequestHeader("Content-Type", "application/json");
// XXX async
r.send(JSON.stringify(result));
}
function clear(ctx) {
var ctx = canvas.getContext("2d");
ctx.save();
ctx.fillStyle = "rgb(255, 255, 255)";
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.restore();
}
function log(str) {
stdout.innerHTML += str;
window.scrollTo(0, stdout.getBoundingClientRect().bottom);
}
</script>
</head>
<body onload="load();">
<pre id="stdout"></pre>
</body>
</html>

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tests/canvas.pdf Normal file
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tests/tracemonkey.pdf Normal file
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11
utils/cffStandardStrings.js
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@ -1,5 +1,10 @@
/* -*- 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 CFFStrings = [
".notdef",
".notdef",
"space",
"exclam",
"quotedbl",
@ -490,7 +495,7 @@ var CFFDictDataMap = {
},
"10": {
name: "StdHW"
},
},
"11": {
name: "StdVW"
},
@ -597,7 +602,7 @@ var CFFDictDataMap = {
},
"18": {
name: "Private",
operand: "number number"
operand: "number number"
},
"19": {
name: "Subrs"

5
utils/fonts_utils.js
View File

@ -1,3 +1,8 @@
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
"use strict";
/**
* The Type2 reader code below is only used for debugging purpose since Type2
* is only a CharString format and is never used directly as a Font file.

8
viewer.js
View File

@ -1,12 +1,14 @@
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- /
/* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
var pdfDocument, canvas, pageDisplay, pageNum, pageInterval;
"use strict";
var pdfDocument, canvas, numPages, pageDisplay, pageNum, pageInterval;
function load(userInput) {
canvas = document.getElementById("canvas");
canvas.mozOpaque = true;
pageNum = parseInt(queryParams().page) || 1;
fileName = userInput;
var fileName = userInput;
if (!userInput) {
fileName = queryParams().file || "compressed.tracemonkey-pldi-09.pdf";
}
@ -26,7 +28,7 @@ function queryParams() {
function open(url) {
document.title = url;
req = new XMLHttpRequest();
var req = new XMLHttpRequest();
req.open("GET", url);
req.mozResponseType = req.responseType = "arraybuffer";
req.expected = (document.URL.indexOf("file:") == 0) ? 0 : 200;