Sakurai/pdf.js
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge branch 'master' of git://github.com/mozilla/pdf.js.git into forms-1

Browse Source
This commit is contained in:
notmasteryet 2011-12-15 15:35:44 -06:00
commit b010f293a2
30 changed files with 809 additions and 454 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
README.md
View File

@ -1,6 +1,6 @@
# pdf.js
## Overview
@ -205,3 +205,4 @@ a "PDF Reference" from Adobe:
Recommended chapters to read: "2. Overview", "3.4 File Structure",
"4.1 Graphics Objects" that lists the PDF commands.

141
src/canvas.js
View File

@ -17,8 +17,8 @@ var TextRenderingMode = {
ADD_TO_PATH: 7
};
var CanvasExtraState = (function canvasExtraState() {
function constructor(old) {
var CanvasExtraState = (function CanvasExtraStateClosure() {
function CanvasExtraState(old) {
// Are soft masks and alpha values shapes or opacities?
this.alphaIsShape = false;
this.fontSize = 0;
@ -52,7 +52,7 @@ var CanvasExtraState = (function canvasExtraState() {
this.old = old;
}
constructor.prototype = {
CanvasExtraState.prototype = {
clone: function canvasextra_clone() {
return Object.create(this);
},
@ -61,7 +61,7 @@ var CanvasExtraState = (function canvasExtraState() {
this.y = y;
}
};
return constructor;
return CanvasExtraState;
})();
function ScratchCanvas(width, height) {
@ -181,12 +181,12 @@ function addContextCurrentTransform(ctx) {
}
}
var CanvasGraphics = (function canvasGraphics() {
var CanvasGraphics = (function CanvasGraphicsClosure() {
// Defines the time the executeIRQueue is going to be executing
// before it stops and shedules a continue of execution.
var kExecutionTime = 50;
function constructor(canvasCtx, objs, textLayer) {
function CanvasGraphics(canvasCtx, objs, textLayer) {
this.ctx = canvasCtx;
this.current = new CanvasExtraState();
this.stateStack = [];
@ -206,7 +206,7 @@ var CanvasGraphics = (function canvasGraphics() {
var NORMAL_CLIP = {};
var EO_CLIP = {};
constructor.prototype = {
CanvasGraphics.prototype = {
slowCommands: {
'stroke': true,
'closeStroke': true,
@ -638,17 +638,7 @@ var CanvasGraphics = (function canvasGraphics() {
geometry.hScale = tr[0] - bl[0];
geometry.vScale = tr[1] - bl[1];
}
var spaceGlyph = font.charsToGlyphs(' ');
// Hack (sometimes space is not encoded)
if (spaceGlyph.length === 0 || spaceGlyph[0].width === 0)
spaceGlyph = font.charsToGlyphs('i');
// Fallback
if (spaceGlyph.length === 0 || spaceGlyph[0].width === 0)
spaceGlyph = [{width: 0}];
geometry.spaceWidth = spaceGlyph[0].width;
geometry.spaceWidth = font.spaceWidth;
return geometry;
},
@ -687,13 +677,6 @@ var CanvasGraphics = (function canvasGraphics() {
var textSelection = textLayer && !skipTextSelection ? true : false;
var textRenderingMode = current.textRenderingMode;
if (textSelection) {
ctx.save();
this.applyTextTransforms();
text.geom = this.getTextGeometry();
ctx.restore();
}
// Type3 fonts - each glyph is a "mini-PDF"
if (font.coded) {
ctx.save();
@ -701,6 +684,13 @@ var CanvasGraphics = (function canvasGraphics() {
ctx.translate(current.x, current.y);
ctx.scale(textHScale, 1);
if (textSelection) {
this.save();
ctx.scale(1, -1);
text.geom = this.getTextGeometry();
this.restore();
}
for (var i = 0; i < glyphsLength; ++i) {
var glyph = glyphs[i];
@ -720,7 +710,7 @@ var CanvasGraphics = (function canvasGraphics() {
var width = transformed[0] * fontSize + charSpacing;
ctx.translate(width, 0);
current.x += width * textHScale2;
current.x += width * textHScale;
text.str += glyph.unicode;
text.length++;
@ -730,6 +720,8 @@ var CanvasGraphics = (function canvasGraphics() {
} else {
ctx.save();
this.applyTextTransforms();
if (textSelection)
text.geom = this.getTextGeometry();
var width = 0;
for (var i = 0; i < glyphsLength; ++i) {
@ -780,18 +772,26 @@ var CanvasGraphics = (function canvasGraphics() {
showSpacedText: function canvasGraphicsShowSpacedText(arr) {
var ctx = this.ctx;
var current = this.current;
var font = current.font;
var fontSize = current.fontSize;
var textHScale2 = current.textHScale *
(current.font.fontMatrix || IDENTITY_MATRIX)[0];
var textHScale = current.textHScale;
if (!font.coded)
textHScale *= (font.fontMatrix || IDENTITY_MATRIX)[0];
var arrLength = arr.length;
var textLayer = this.textLayer;
var font = current.font;
var text = {str: '', length: 0, canvasWidth: 0, geom: {}};
var textSelection = textLayer ? true : false;
if (textSelection) {
ctx.save();
this.applyTextTransforms();
// Type3 fonts - each glyph is a "mini-PDF" (see also showText)
if (font.coded) {
ctx.transform.apply(ctx, current.textMatrix);
ctx.scale(1, -1);
ctx.translate(current.x, -1 * current.y);
ctx.scale(textHScale, 1);
} else
this.applyTextTransforms();
text.geom = this.getTextGeometry();
ctx.restore();
}
@ -799,7 +799,7 @@ var CanvasGraphics = (function canvasGraphics() {
for (var i = 0; i < arrLength; ++i) {
var e = arr[i];
if (isNum(e)) {
var spacingLength = -e * 0.001 * fontSize * textHScale2;
var spacingLength = -e * 0.001 * fontSize * textHScale;
current.x += spacingLength;
if (textSelection) {
@ -807,9 +807,10 @@ var CanvasGraphics = (function canvasGraphics() {
text.canvasWidth += spacingLength;
if (e < 0 && text.geom.spaceWidth > 0) { // avoid div by zero
var numFakeSpaces = Math.round(-e / text.geom.spaceWidth);
for (var j = 0; j < numFakeSpaces; ++j)
if (numFakeSpaces > 0) {
text.str += '&nbsp;';
text.length += numFakeSpaces > 0 ? 1 : 0;
text.length++;
}
}
}
} else if (isString(e)) {
@ -985,9 +986,9 @@ var CanvasGraphics = (function canvasGraphics() {
var height = canvas.height;
var bl = Util.applyTransform([0, 0], inv);
var br = Util.applyTransform([0, width], inv);
var ul = Util.applyTransform([height, 0], inv);
var ur = Util.applyTransform([height, width], inv);
var br = Util.applyTransform([0, height], inv);
var ul = Util.applyTransform([width, 0], inv);
var ur = Util.applyTransform([width, height], inv);
var x0 = Math.min(bl[0], br[0], ul[0], ur[0]);
var y0 = Math.min(bl[1], br[1], ul[1], ur[1]);
@ -1037,8 +1038,8 @@ var CanvasGraphics = (function canvasGraphics() {
},
paintJpegXObject: function canvasGraphicsPaintJpegXObject(objId, w, h) {
var image = this.objs.get(objId);
if (!image) {
var domImage = this.objs.get(objId);
if (!domImage) {
error('Dependent image isn\'t ready yet');
}
@ -1048,7 +1049,6 @@ var CanvasGraphics = (function canvasGraphics() {
// scale the image to the unit square
ctx.scale(1 / w, -1 / h);
var domImage = image.getImage();
ctx.drawImage(domImage, 0, 0, domImage.width, domImage.height,
0, -h, w, h);
@ -1104,7 +1104,11 @@ var CanvasGraphics = (function canvasGraphics() {
this.restore();
},
paintImageXObject: function canvasGraphicsPaintImageXObject(imgData) {
paintImageXObject: function canvasGraphicsPaintImageXObject(objId) {
var imgData = this.objs.get(objId);
if (!imgData) {
error('Dependent image isn\'t ready yet');
}
this.save();
var ctx = this.ctx;
var w = imgData.width;
@ -1114,26 +1118,16 @@ var CanvasGraphics = (function canvasGraphics() {
var tmpCanvas = new this.ScratchCanvas(w, h);
var tmpCtx = tmpCanvas.getContext('2d');
var tmpImgData;
this.putBinaryImageData(tmpCtx, imgData, w, h);
// Some browsers can set an UInt8Array directly as imageData, some
// can't. As long as we don't have proper feature detection, just
// copy over each pixel and set the imageData that way.
tmpImgData = tmpCtx.getImageData(0, 0, w, h);
// Copy over the imageData.
var tmpImgDataPixels = tmpImgData.data;
var len = tmpImgDataPixels.length;
while (len--) {
tmpImgDataPixels[len] = imgData.data[len];
}
tmpCtx.putImageData(tmpImgData, 0, 0);
ctx.drawImage(tmpCanvas, 0, -h);
this.restore();
},
putBinaryImageData: function canvasPutBinaryImageData() {
//
},
// Marked content
markPoint: function canvasGraphicsMarkPoint(tag) {
@ -1191,6 +1185,41 @@ var CanvasGraphics = (function canvasGraphics() {
}
};
return constructor;
return CanvasGraphics;
})();
if (!isWorker) {
// Feature detection if the browser can use an Uint8Array directly as imgData.
var canvas = document.createElement('canvas');
canvas.width = 1;
canvas.height = 1;
var ctx = canvas.getContext('2d');
try {
ctx.putImageData({
width: 1,
height: 1,
data: new Uint8Array(4)
}, 0, 0);
CanvasGraphics.prototype.putBinaryImageData =
function CanvasGraphicsPutBinaryImageDataNative(ctx, imgData) {
ctx.putImageData(imgData, 0, 0);
};
} catch (e) {
CanvasGraphics.prototype.putBinaryImageData =
function CanvasGraphicsPutBinaryImageDataShim(ctx, imgData, w, h) {
var tmpImgData = ctx.getImageData(0, 0, w, h);
// Copy over the imageData pixel by pixel.
var tmpImgDataPixels = tmpImgData.data;
var len = tmpImgDataPixels.length;
while (len--) {
tmpImgDataPixels[len] = imgData.data[len];
}
ctx.putImageData(tmpImgData, 0, 0);
};
}
}

66
src/colorspace.js
View File

@ -3,13 +3,13 @@
'use strict';
var ColorSpace = (function colorSpaceColorSpace() {
var ColorSpace = (function ColorSpaceClosure() {
// Constructor should define this.numComps, this.defaultColor, this.name
function constructor() {
function ColorSpace() {
error('should not call ColorSpace constructor');
}
constructor.prototype = {
ColorSpace.prototype = {
// Input: array of size numComps representing color component values
// Output: array of rgb values, each value ranging from [0.1]
getRgb: function colorSpaceGetRgb(color) {
@ -22,15 +22,15 @@ var ColorSpace = (function colorSpaceColorSpace() {
}
};
constructor.parse = function colorSpaceParse(cs, xref, res) {
var IR = constructor.parseToIR(cs, xref, res);
ColorSpace.parse = function colorSpaceParse(cs, xref, res) {
var IR = ColorSpace.parseToIR(cs, xref, res);
if (IR instanceof AlternateCS)
return IR;
return constructor.fromIR(IR);
return ColorSpace.fromIR(IR);
};
constructor.fromIR = function colorSpaceFromIR(IR) {
ColorSpace.fromIR = function colorSpaceFromIR(IR) {
var name = isArray(IR) ? IR[0] : IR;
switch (name) {
@ -63,7 +63,7 @@ var ColorSpace = (function colorSpaceColorSpace() {
return null;
};
constructor.parseToIR = function colorSpaceParseToIR(cs, xref, res) {
ColorSpace.parseToIR = function colorSpaceParseToIR(cs, xref, res) {
if (isName(cs)) {
var colorSpaces = xref.fetchIfRef(res.get('ColorSpace'));
if (isDict(colorSpaces)) {
@ -155,7 +155,7 @@ var ColorSpace = (function colorSpaceColorSpace() {
return null;
};
return constructor;
return ColorSpace;
})();
/**
@ -164,8 +164,8 @@ var ColorSpace = (function colorSpaceColorSpace() {
* Both color spaces use a tinting function to convert colors to a base color
* space.
*/
var AlternateCS = (function alternateCS() {
function constructor(numComps, base, tintFn) {
var AlternateCS = (function AlternateCSClosure() {
function AlternateCS(numComps, base, tintFn) {
this.name = 'Alternate';
this.numComps = numComps;
this.defaultColor = [];
@ -175,7 +175,7 @@ var AlternateCS = (function alternateCS() {
this.tintFn = tintFn;
}
constructor.prototype = {
AlternateCS.prototype = {
getRgb: function altcs_getRgb(color) {
var tinted = this.tintFn(color);
return this.base.getRgb(tinted);
@ -203,21 +203,21 @@ var AlternateCS = (function alternateCS() {
}
};
return constructor;
return AlternateCS;
})();
var PatternCS = (function patternCS() {
function constructor(baseCS) {
var PatternCS = (function PatternCSClosure() {
function PatternCS(baseCS) {
this.name = 'Pattern';
this.base = baseCS;
}
constructor.prototype = {};
PatternCS.prototype = {};
return constructor;
return PatternCS;
})();
var IndexedCS = (function indexedCS() {
function constructor(base, highVal, lookup) {
var IndexedCS = (function IndexedCSClosure() {
function IndexedCS(base, highVal, lookup) {
this.name = 'Indexed';
this.numComps = 1;
this.defaultColor = [0];
@ -240,7 +240,7 @@ var IndexedCS = (function indexedCS() {
this.lookup = lookupArray;
}
constructor.prototype = {
IndexedCS.prototype = {
getRgb: function indexcs_getRgb(color) {
var numComps = this.base.numComps;
var start = color[0] * numComps;
@ -269,17 +269,17 @@ var IndexedCS = (function indexedCS() {
return base.getRgbBuffer(baseBuf, 8);
}
};
return constructor;
return IndexedCS;
})();
var DeviceGrayCS = (function deviceGrayCS() {
function constructor() {
var DeviceGrayCS = (function DeviceGrayCSClosure() {
function DeviceGrayCS() {
this.name = 'DeviceGray';
this.numComps = 1;
this.defaultColor = [0];
}
constructor.prototype = {
DeviceGrayCS.prototype = {
getRgb: function graycs_getRgb(color) {
var c = color[0];
return [c, c, c];
@ -297,16 +297,16 @@ var DeviceGrayCS = (function deviceGrayCS() {
return rgbBuf;
}
};
return constructor;
return DeviceGrayCS;
})();
var DeviceRgbCS = (function deviceRgbCS() {
function constructor() {
var DeviceRgbCS = (function DeviceRgbCSClosure() {
function DeviceRgbCS() {
this.name = 'DeviceRGB';
this.numComps = 3;
this.defaultColor = [0, 0, 0];
}
constructor.prototype = {
DeviceRgbCS.prototype = {
getRgb: function rgbcs_getRgb(color) {
return color;
},
@ -321,16 +321,16 @@ var DeviceRgbCS = (function deviceRgbCS() {
return rgbBuf;
}
};
return constructor;
return DeviceRgbCS;
})();
var DeviceCmykCS = (function deviceCmykCS() {
function constructor() {
var DeviceCmykCS = (function DeviceCmykCSClosure() {
function DeviceCmykCS() {
this.name = 'DeviceCMYK';
this.numComps = 4;
this.defaultColor = [0, 0, 0, 1];
}
constructor.prototype = {
DeviceCmykCS.prototype = {
getRgb: function cmykcs_getRgb(color) {
var c = color[0], m = color[1], y = color[2], k = color[3];
var c1 = 1 - c, m1 = 1 - m, y1 = 1 - y, k1 = 1 - k;
@ -406,6 +406,6 @@ var DeviceCmykCS = (function deviceCmykCS() {
}
};
return constructor;
return DeviceCmykCS;
})();

88
src/core.js
View File

@ -5,6 +5,8 @@
var globalScope = (typeof window === 'undefined') ? this : window;
var isWorker = (typeof window == 'undefined');
var ERRORS = 0, WARNINGS = 1, TODOS = 5;
var verbosity = WARNINGS;
@ -31,7 +33,7 @@ function getPdf(arg, callback) {
var xhr = new XMLHttpRequest();
xhr.open('GET', params.url);
xhr.mozResponseType = xhr.responseType = 'arraybuffer';
xhr.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200;
xhr.expected = (params.url.indexOf('file:') === 0) ? 0 : 200;
if ('progress' in params)
xhr.onprogress = params.progress || undefined;
@ -54,8 +56,8 @@ function getPdf(arg, callback) {
}
globalScope.PDFJS.getPdf = getPdf;
var Page = (function pagePage() {
function constructor(xref, pageNumber, pageDict, ref) {
var Page = (function PageClosure() {
function Page(xref, pageNumber, pageDict, ref) {
this.pageNumber = pageNumber;
this.pageDict = pageDict;
this.stats = {
@ -72,7 +74,7 @@ var Page = (function pagePage() {
this.callback = null;
}
constructor.prototype = {
Page.prototype = {
getPageProp: function pageGetPageProp(key) {
return this.xref.fetchIfRef(this.pageDict.get(key));
},
@ -392,7 +394,7 @@ var Page = (function pagePage() {
}
};
return constructor;
return Page;
})();
/**
@ -405,8 +407,8 @@ var Page = (function pagePage() {
* need for the `PDFDocModel` anymore and there is only one object on the
* main thread and not one entire copy on each worker instance.
*/
var PDFDocModel = (function pdfDoc() {
function constructor(arg, callback) {
var PDFDocModel = (function PDFDocModelClosure() {
function PDFDocModel(arg, callback) {
if (isStream(arg))
init.call(this, arg);
else if (isArrayBuffer(arg))
@ -438,7 +440,7 @@ var PDFDocModel = (function pdfDoc() {
return true; /* found */
}
constructor.prototype = {
PDFDocModel.prototype = {
get linearization() {
var length = this.stream.length;
var linearization = false;
@ -460,12 +462,17 @@ var PDFDocModel = (function pdfDoc() {
if (find(stream, 'endobj', 1024))
startXRef = stream.pos + 6;
} else {
// Find startxref at the end of the file.
var start = stream.end - 1024;
if (start < 0)
start = 0;
stream.pos = start;
if (find(stream, 'startxref', 1024, true)) {
// Find startxref by jumping backward from the end of the file.
var step = 1024;
var found = false, pos = stream.end;
while (!found && pos > 0) {
pos -= step - 'startxref'.length;
if (pos < 0)
pos = 0;
stream.pos = pos;
found = find(stream, 'startxref', step, true);
}
if (found) {
stream.skip(9);
var ch;
do {
@ -522,11 +529,11 @@ var PDFDocModel = (function pdfDoc() {
}
};
return constructor;
return PDFDocModel;
})();
var PDFDoc = (function pdfDoc() {
function constructor(arg, callback) {
var PDFDoc = (function PDFDocClosure() {
function PDFDoc(arg, callback) {
var stream = null;
var data = null;
@ -594,7 +601,7 @@ var PDFDoc = (function pdfDoc() {
}
}
constructor.prototype = {
PDFDoc.prototype = {
setupFakeWorker: function() {
// If we don't use a worker, just post/sendMessage to the main thread.
var fakeWorker = {
@ -630,8 +637,12 @@ var PDFDoc = (function pdfDoc() {
switch (type) {
case 'JpegStream':
var IR = data[2];
new JpegImageLoader(id, IR, this.objs);
var imageData = data[2];
loadJpegStream(id, imageData, this.objs);
break;
case 'Image':
var imageData = data[2];
this.objs.resolve(id, imageData);
break;
case 'Font':
var name = data[2];
@ -677,6 +688,41 @@ var PDFDoc = (function pdfDoc() {
throw data.error;
}, this);
messageHandler.on('jpeg_decode', function(data, promise) {
var imageData = data[0];
var components = data[1];
if (components != 3 && components != 1)
error('Only 3 component or 1 component can be returned');
var img = new Image();
img.onload = (function jpegImageLoaderOnload() {
var width = img.width;
var height = img.height;
var size = width * height;
var rgbaLength = size * 4;
var buf = new Uint8Array(size * components);
var tmpCanvas = new ScratchCanvas(width, height);
var tmpCtx = tmpCanvas.getContext('2d');
tmpCtx.drawImage(img, 0, 0);
var data = tmpCtx.getImageData(0, 0, width, height).data;
if (components == 3) {
for (var i = 0, j = 0; i < rgbaLength; i += 4, j += 3) {
buf[j] = data[i];
buf[j + 1] = data[i + 1];
buf[j + 2] = data[i + 2];
}
} else if (components == 1) {
for (var i = 0, j = 0; i < rgbaLength; i += 4, j++) {
buf[j] = data[i];
}
}
promise.resolve({ data: buf, width: width, height: height});
}).bind(this);
var src = 'data:image/jpeg;base64,' + window.btoa(imageData);
img.src = src;
});
setTimeout(function pdfDocFontReadySetTimeout() {
messageHandler.send('doc', this.data);
this.workerReadyPromise.resolve(true);
@ -723,7 +769,7 @@ var PDFDoc = (function pdfDoc() {
}
};
return constructor;
return PDFDoc;
})();
globalScope.PDFJS.PDFDoc = PDFDoc;

44
src/crypto.js
View File

@ -3,8 +3,8 @@
'use strict';
var ARCFourCipher = (function arcFourCipher() {
function constructor(key) {
var ARCFourCipher = (function ARCFourCipherClosure() {
function ARCFourCipher(key) {
this.a = 0;
this.b = 0;
var s = new Uint8Array(256);
@ -20,7 +20,7 @@ var ARCFourCipher = (function arcFourCipher() {
this.s = s;
}
constructor.prototype = {
ARCFourCipher.prototype = {
encryptBlock: function arcFourCipherEncryptBlock(data) {
var i, n = data.length, tmp, tmp2;
var a = this.a, b = this.b, s = this.s;
@ -39,12 +39,12 @@ var ARCFourCipher = (function arcFourCipher() {
return output;
}
};
constructor.prototype.decryptBlock = constructor.prototype.encryptBlock;
ARCFourCipher.prototype.decryptBlock = ARCFourCipher.prototype.encryptBlock;
return constructor;
return ARCFourCipher;
})();
var calculateMD5 = (function calculateMD5() {
var calculateMD5 = (function calculateMD5Closure() {
var r = new Uint8Array([
7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20,
@ -128,20 +128,20 @@ var calculateMD5 = (function calculateMD5() {
return hash;
})();
var NullCipher = (function nullCipher() {
function constructor() {
var NullCipher = (function NullCipherClosure() {
function NullCipher() {
}
constructor.prototype = {
NullCipher.prototype = {
decryptBlock: function nullCipherDecryptBlock(data) {
return data;
}
};
return constructor;
return NullCipher;
})();
var AES128Cipher = (function aes128Cipher() {
var AES128Cipher = (function AES128CipherClosure() {
var rcon = new Uint8Array([
0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c,
0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a,
@ -330,7 +330,7 @@ var AES128Cipher = (function aes128Cipher() {
return state;
}
function constructor(key) {
function AES128Cipher(key) {
this.key = expandKey128(key);
this.buffer = new Uint8Array(16);
this.bufferPosition = 0;
@ -370,7 +370,7 @@ var AES128Cipher = (function aes128Cipher() {
return output;
}
constructor.prototype = {
AES128Cipher.prototype = {
decryptBlock: function aes128CipherDecryptBlock(data) {
var i, sourceLength = data.length;
var buffer = this.buffer, bufferLength = this.bufferPosition;
@ -391,15 +391,15 @@ var AES128Cipher = (function aes128Cipher() {
}
};
return constructor;
return AES128Cipher;
})();
var CipherTransform = (function cipherTransform() {
function constructor(stringCipherConstructor, streamCipherConstructor) {
var CipherTransform = (function CipherTransformClosure() {
function CipherTransform(stringCipherConstructor, streamCipherConstructor) {
this.stringCipherConstructor = stringCipherConstructor;
this.streamCipherConstructor = streamCipherConstructor;
}
constructor.prototype = {
CipherTransform.prototype = {
createStream: function cipherTransformCreateStream(stream) {
var cipher = new this.streamCipherConstructor();
return new DecryptStream(stream,
@ -415,10 +415,10 @@ var CipherTransform = (function cipherTransform() {
return bytesToString(data);
}
};
return constructor;
return CipherTransform;
})();
var CipherTransformFactory = (function cipherTransformFactory() {
var CipherTransformFactory = (function CipherTransformFactoryClosure() {
function prepareKeyData(fileId, password, ownerPassword, userPassword,
flags, revision, keyLength, encryptMetadata) {
var defaultPasswordBytes = new Uint8Array([
@ -490,7 +490,7 @@ var CipherTransformFactory = (function cipherTransformFactory() {
var identityName = new Name('Identity');
function constructor(dict, fileId, password) {
function CipherTransformFactory(dict, fileId, password) {
var filter = dict.get('Filter');
if (!isName(filter) || filter.name != 'Standard')
error('unknown encryption method');
@ -573,7 +573,7 @@ var CipherTransformFactory = (function cipherTransformFactory() {
return null;
}
constructor.prototype = {
CipherTransformFactory.prototype = {
createCipherTransform: function buildCipherCreateCipherTransform(num,
gen) {
if (this.algorithm == 4) {
@ -592,6 +592,6 @@ var CipherTransformFactory = (function cipherTransformFactory() {
}
};
return constructor;
return CipherTransformFactory;
})();

94
src/evaluator.js
View File

@ -3,8 +3,8 @@
'use strict';
var PartialEvaluator = (function partialEvaluator() {
function constructor(xref, handler, uniquePrefix) {
var PartialEvaluator = (function PartialEvaluatorClosure() {
function PartialEvaluator(xref, handler, uniquePrefix) {
this.state = new EvalState();
this.stateStack = [];
@ -111,7 +111,7 @@ var PartialEvaluator = (function partialEvaluator() {
EX: 'endCompat'
};
constructor.prototype = {
PartialEvaluator.prototype = {
getIRQueue: function partialEvaluatorGetIRQueue(stream, resources,
queue, dependency) {
@ -184,62 +184,52 @@ var PartialEvaluator = (function partialEvaluator() {
var w = dict.get('Width', 'W');
var h = dict.get('Height', 'H');
if (image instanceof JpegStream && image.isNative) {
var objId = 'img_' + uniquePrefix + (++self.objIdCounter);
handler.send('obj', [objId, 'JpegStream', image.getIR()]);
var imageMask = dict.get('ImageMask', 'IM') || false;
if (imageMask) {
// This depends on a tmpCanvas beeing filled with the
// current fillStyle, such that processing the pixel
// data can't be done here. Instead of creating a
// complete PDFImage, only read the information needed
// for later.
// Add the dependency on the image object.
insertDependency([objId]);
// The normal fn.
fn = 'paintJpegXObject';
args = [objId, w, h];
var width = dict.get('Width', 'W');
var height = dict.get('Height', 'H');
var bitStrideLength = (width + 7) >> 3;
var imgArray = image.getBytes(bitStrideLength * height);
var decode = dict.get('Decode', 'D');
var inverseDecode = !!decode && decode[0] > 0;
fn = 'paintImageMaskXObject';
args = [imgArray, inverseDecode, width, height];
return;
}
// Needs to be rendered ourself.
// Figure out if the image has an imageMask.
var imageMask = dict.get('ImageMask', 'IM') || false;
// If there is no imageMask, create the PDFImage and a lot
// of image processing can be done here.
if (!imageMask) {
var imageObj = new PDFImage(xref, resources, image, inline);
var objId = 'img_' + uniquePrefix + (++self.objIdCounter);
insertDependency([objId]);
args = [objId, w, h];
if (imageObj.imageMask) {
throw 'Can\'t handle this in the web worker :/';
}
var imgData = {
width: w,
height: h,
data: new Uint8Array(w * h * 4)
};
var pixels = imgData.data;
imageObj.fillRgbaBuffer(pixels, imageObj.decode);
fn = 'paintImageXObject';
args = [imgData];
var softMask = dict.get('SMask', 'IM') || false;
if (!softMask && image instanceof JpegStream && image.isNative) {
// These JPEGs don't need any more processing so we can just send it.
fn = 'paintJpegXObject';
handler.send('obj', [objId, 'JpegStream', image.getIR()]);
return;
}
// This depends on a tmpCanvas beeing filled with the
// current fillStyle, such that processing the pixel
// data can't be done here. Instead of creating a
// complete PDFImage, only read the information needed
// for later.
fn = 'paintImageMaskXObject';
fn = 'paintImageXObject';
var width = dict.get('Width', 'W');
var height = dict.get('Height', 'H');
var bitStrideLength = (width + 7) >> 3;
var imgArray = image.getBytes(bitStrideLength * height);
var decode = dict.get('Decode', 'D');
var inverseDecode = !!decode && decode[0] > 0;
args = [imgArray, inverseDecode, width, height];
PDFImage.buildImage(function(imageObj) {
var imgData = {
width: w,
height: h,
data: new Uint8Array(w * h * 4)
};
var pixels = imgData.data;
imageObj.fillRgbaBuffer(pixels, imageObj.decode);
handler.send('obj', [objId, 'Image', imgData]);
}, handler, xref, resources, image, inline);
}
uniquePrefix = uniquePrefix || '';
@ -858,11 +848,11 @@ var PartialEvaluator = (function partialEvaluator() {
}
};
return constructor;
return PartialEvaluator;
})();
var EvalState = (function evalState() {
function constructor() {
var EvalState = (function EvalStateClosure() {
function EvalState() {
// Are soft masks and alpha values shapes or opacities?
this.alphaIsShape = false;
this.fontSize = 0;
@ -879,8 +869,8 @@ var EvalState = (function evalState() {
this.fillColorSpace = null;
this.strokeColorSpace = null;
}
constructor.prototype = {
EvalState.prototype = {
};
return constructor;
return EvalState;
})();

112
src/fonts.js
View File

@ -3,8 +3,6 @@
'use strict';
var isWorker = (typeof window == 'undefined');
/**
* Maximum time to wait for a font to be loaded by font-face rules.
*/
@ -733,8 +731,8 @@ function isSpecialUnicode(unicode) {
* var type1Font = new Font("MyFontName", binaryFile, propertiesObject);
* type1Font.bind();
*/
var Font = (function Font() {
var constructor = function font_constructor(name, file, properties) {
var Font = (function FontClosure() {
function Font(name, file, properties) {
this.name = name;
this.coded = properties.coded;
this.charProcIRQueues = properties.charProcIRQueues;
@ -765,8 +763,10 @@ var Font = (function Font() {
this.fontMatrix = properties.fontMatrix;
this.widthMultiplier = 1.0;
if (properties.type == 'Type3')
if (properties.type == 'Type3') {
this.encoding = properties.baseEncoding;
return;
}
// Trying to fix encoding using glyph CIDSystemInfo.
this.loadCidToUnicode(properties);
@ -884,6 +884,13 @@ var Font = (function Font() {
String.fromCharCode(value & 0xff);
};
function safeString16(value) {
// clamp value to the 16-bit int range
value = value > 0x7FFF ? 0x7FFF : value < -0x8000 ? -0x8000 : value;
return String.fromCharCode((value >> 8) & 0xff) +
String.fromCharCode(value & 0xff);
};
function string32(value) {
return String.fromCharCode((value >> 24) & 0xff) +
String.fromCharCode((value >> 16) & 0xff) +
@ -1222,7 +1229,7 @@ var Font = (function Font() {
return nameTable;
}
constructor.prototype = {
Font.prototype = {
name: null,
font: null,
mimetype: null,
@ -1758,7 +1765,7 @@ var Font = (function Font() {
var hasShortCmap = !!cmapTable.hasShortCmap;
var toUnicode = this.toUnicode;
if (hasShortCmap && toUnicode) {
if (toUnicode && toUnicode.length > 0) {
// checking if cmap is just identity map
var isIdentity = true;
for (var i = 0, ii = glyphs.length; i < ii; i++) {
@ -1769,15 +1776,38 @@ var Font = (function Font() {
}
// if it is, replacing with meaningful toUnicode values
if (isIdentity) {
var usedUnicodes = [], unassignedUnicodeItems = [];
for (var i = 0, ii = glyphs.length; i < ii; i++) {
var unicode = toUnicode[i + 1] || i + 1;
var unicode = toUnicode[i + 1];
if (!unicode || unicode in usedUnicodes) {
unassignedUnicodeItems.push(i);
continue;
}
glyphs[i].unicode = unicode;
usedUnicodes[unicode] = true;
}
var unusedUnicode = kCmapGlyphOffset;
for (var j = 0, jj = unassignedUnicodeItems.length; j < jj; j++) {
var i = unassignedUnicodeItems[j];
while (unusedUnicode in usedUnicodes)
unusedUnicode++;
var cid = i + 1;
// override only if unicode mapping is not specified
if (!(cid in toUnicode))
toUnicode[cid] = unusedUnicode;
glyphs[i].unicode = unusedUnicode++;
}
this.useToUnicode = true;
}
}
properties.hasShortCmap = hasShortCmap;
// remove glyph references outside range of avaialable glyphs
for (var i = 0, ii = ids.length; i < ii; i++) {
if (ids[i] >= numGlyphs)
ids[i] = 0;
}
createGlyphNameMap(glyphs, ids, properties);
this.glyphNameMap = properties.glyphNameMap;
@ -1903,9 +1933,9 @@ var Font = (function Font() {
'\x00\x00\x00\x00\x9e\x0b\x7e\x27' + // creation date
'\x00\x00\x00\x00\x9e\x0b\x7e\x27' + // modifification date
'\x00\x00' + // xMin
string16(properties.descent) + // yMin
safeString16(properties.descent) + // yMin
'\x0F\xFF' + // xMax
string16(properties.ascent) + // yMax
safeString16(properties.ascent) + // yMax
string16(properties.italicAngle ? 2 : 0) + // macStyle
'\x00\x11' + // lowestRecPPEM
'\x00\x00' + // fontDirectionHint
@ -1917,15 +1947,15 @@ var Font = (function Font() {
'hhea': (function fontFieldsHhea() {
return stringToArray(
'\x00\x01\x00\x00' + // Version number
string16(properties.ascent) + // Typographic Ascent
string16(properties.descent) + // Typographic Descent
safeString16(properties.ascent) + // Typographic Ascent
safeString16(properties.descent) + // Typographic Descent
'\x00\x00' + // Line Gap
'\xFF\xFF' + // advanceWidthMax
'\x00\x00' + // minLeftSidebearing
'\x00\x00' + // minRightSidebearing
'\x00\x00' + // xMaxExtent
string16(properties.capHeight) + // caretSlopeRise
string16(Math.tan(properties.italicAngle) *
safeString16(properties.capHeight) + // caretSlopeRise
safeString16(Math.tan(properties.italicAngle) *
properties.xHeight) + // caretSlopeRun
'\x00\x00' + // caretOffset
'\x00\x00' + // -reserved-
@ -2071,6 +2101,37 @@ var Font = (function Font() {
return rule;
},
get spaceWidth() {
// trying to estimate space character width
var possibleSpaceReplacements = ['space', 'minus', 'one', 'i'];
var width;
for (var i = 0, ii = possibleSpaceReplacements.length; i < ii; i++) {
var glyphName = possibleSpaceReplacements[i];
// if possible, getting width by glyph name
if (glyphName in this.widths) {
width = this.widths[glyphName];
break;
}
var glyphUnicode = GlyphsUnicode[glyphName];
// finding the charcode via unicodeToCID map
var charcode = 0;
if (this.composite)
charcode = this.unicodeToCID[glyphUnicode];
// ... via toUnicode map
if (!charcode && 'toUnicode' in this)
charcode = this.toUnicode.indexOf(glyphUnicode);
// setting it to unicode if negative or undefined
if (!(charcode > 0))
charcode = glyphUnicode;
// trying to get width via charcode
width = this.widths[charcode];
if (width)
break; // the non-zero width found
}
width = (width || this.defaultWidth) * this.widthMultiplier;
return shadow(this, 'spaceWidth', width);
},
charToGlyph: function fonts_charToGlyph(charcode) {
var unicode, width, codeIRQueue;
@ -2095,9 +2156,9 @@ var Font = (function Font() {
break;
case 'Type1':
var glyphName = this.differences[charcode] || this.encoding[charcode];
if (!isNum(width))
width = this.widths[glyphName];
if (this.noUnicodeAdaptation) {
if (!isNum(width))
width = this.widths[glyphName];
unicode = GlyphsUnicode[glyphName] || charcode;
break;
}
@ -2110,6 +2171,10 @@ var Font = (function Font() {
unicode = charcode;
break;
case 'TrueType':
if (this.useToUnicode) {
unicode = this.toUnicode[charcode] || charcode;
break;
}
var glyphName = this.differences[charcode] || this.encoding[charcode];
if (!glyphName)
glyphName = Encodings.StandardEncoding[charcode];
@ -2138,7 +2203,8 @@ var Font = (function Font() {
break;
}
var unicodeChars = this.toUnicode ? this.toUnicode[charcode] : charcode;
var unicodeChars = !('toUnicode' in this) ? charcode :
this.toUnicode[charcode] || charcode;
if (typeof unicodeChars === 'number')
unicodeChars = String.fromCharCode(unicodeChars);
@ -2152,7 +2218,7 @@ var Font = (function Font() {
};
},
charsToGlyphs: function fonts_chars2Glyphs(chars) {
charsToGlyphs: function fonts_charsToGlyphs(chars) {
var charsCache = this.charsCache;
var glyphs;
@ -2200,7 +2266,7 @@ var Font = (function Font() {
}
};
return constructor;
return Font;
})();
/*
@ -3110,9 +3176,9 @@ CFF.prototype = {
}
};
var Type2CFF = (function type2CFF() {
var Type2CFF = (function Type2CFFClosure() {
// TODO: replace parsing code with the Type2Parser in font_utils.js
function constructor(file, properties) {
function Type2CFF(file, properties) {
var bytes = file.getBytes();
this.bytes = bytes;
this.properties = properties;
@ -3120,7 +3186,7 @@ var Type2CFF = (function type2CFF() {
this.data = this.parse();
}
constructor.prototype = {
Type2CFF.prototype = {
parse: function cff_parse() {
var header = this.parseHeader();
var properties = this.properties;
@ -3664,6 +3730,6 @@ var Type2CFF = (function type2CFF() {
}
};
return constructor;
return Type2CFF;
})();

2
src/function.js
View File

@ -3,7 +3,7 @@
'use strict';
var PDFFunction = (function pdfFunction() {
var PDFFunction = (function PDFFunctionClosure() {
var CONSTRUCT_SAMPLED = 0;
var CONSTRUCT_INTERPOLATED = 2;
var CONSTRUCT_STICHED = 3;

112
src/image.js
View File

@ -3,8 +3,28 @@
'use strict';
var PDFImage = (function pdfImage() {
function constructor(xref, res, image, inline) {
var PDFImage = (function PDFImageClosure() {
/**
* Decode the image in the main thread if it supported. Resovles the promise
* when the image data is ready.
*/
function handleImageData(handler, xref, res, image, promise) {
if (image instanceof JpegStream && image.isNative) {
// For natively supported jpegs send them to the main thread for decoding.
var dict = image.dict;
var colorSpace = dict.get('ColorSpace', 'CS');
colorSpace = ColorSpace.parse(colorSpace, xref, res);
var numComps = colorSpace.numComps;
handler.send('jpeg_decode', [image.getIR(), numComps], function(message) {
var data = message.data;
var stream = new Stream(data, 0, data.length, image.dict);
promise.resolve(stream);
});
} else {
promise.resolve(image);
}
}
function PDFImage(xref, res, image, inline, smask) {
this.image = image;
if (image.getParams) {
// JPX/JPEG2000 streams directly contain bits per component
@ -51,16 +71,39 @@ var PDFImage = (function pdfImage() {
this.decode = dict.get('Decode', 'D');
var mask = xref.fetchIfRef(dict.get('Mask'));
var smask = xref.fetchIfRef(dict.get('SMask'));
if (mask) {
TODO('masked images');
} else if (smask) {
this.smask = new PDFImage(xref, res, smask);
this.smask = new PDFImage(xref, res, smask, false);
}
}
/**
* Handles processing of image data and calls the callback with an argument
* of a PDFImage when the image is ready to be used.
*/
PDFImage.buildImage = function buildImage(callback, handler, xref, res,
image, inline) {
var imageDataPromise = new Promise();
var smaskPromise = new Promise();
// The image data and smask data may not be ready yet, wait till both are
// resolved.
Promise.all([imageDataPromise, smaskPromise]).then(function(results) {
var imageData = results[0], smaskData = results[1];
var image = new PDFImage(xref, res, imageData, inline, smaskData);
callback(image);
});
constructor.prototype = {
handleImageData(handler, xref, res, image, imageDataPromise);
var smask = xref.fetchIfRef(image.dict.get('SMask'));
if (smask)
handleImageData(handler, xref, res, smask, smaskPromise);
else
smaskPromise.resolve(null);
};
PDFImage.prototype = {
getComponents: function getComponents(buffer, decodeMap) {
var bpc = this.bpc;
if (bpc == 8)
@ -130,18 +173,6 @@ var PDFImage = (function pdfImage() {
var buf = new Uint8Array(width * height);
if (smask) {
if (smask.image.getImage) {
// smask is a DOM image
var tempCanvas = new ScratchCanvas(width, height);
var tempCtx = tempCanvas.getContext('2d');
var domImage = smask.image.getImage();
tempCtx.drawImage(domImage, 0, 0, domImage.width, domImage.height,
0, 0, width, height);
var data = tempCtx.getImageData(0, 0, width, height).data;
for (var i = 0, j = 0, ii = width * height; i < ii; ++i, j += 4)
buf[i] = data[j]; // getting first component value
return buf;
}
var sw = smask.width;
var sh = smask.height;
if (sw != this.width || sh != this.height)
@ -159,8 +190,7 @@ var PDFImage = (function pdfImage() {
applyStencilMask: function applyStencilMask(buffer, inverseDecode) {
var width = this.width, height = this.height;
var bitStrideLength = (width + 7) >> 3;
this.image.reset();
var imgArray = this.image.getBytes(bitStrideLength * height);
var imgArray = this.getImageBytes(bitStrideLength * height);
var imgArrayPos = 0;
var i, j, mask, buf;
// removing making non-masked pixels transparent
@ -188,8 +218,7 @@ var PDFImage = (function pdfImage() {
// rows start at byte boundary;
var rowBytes = (width * numComps * bpc + 7) >> 3;
this.image.reset();
var imgArray = this.image.getBytes(height * rowBytes);
var imgArray = this.getImageBytes(height * rowBytes);
var comps = this.colorSpace.getRgbBuffer(
this.getComponents(imgArray, decodeMap), bpc);
@ -216,42 +245,27 @@ var PDFImage = (function pdfImage() {
// rows start at byte boundary;
var rowBytes = (width * numComps * bpc + 7) >> 3;
this.image.reset();
var imgArray = this.image.getBytes(height * rowBytes);
var imgArray = this.getImageBytes(height * rowBytes);
var comps = this.getComponents(imgArray);
var length = width * height;
for (var i = 0; i < length; ++i)
buffer[i] = comps[i];
},
getImageBytes: function getImageBytes(length) {
this.image.reset();
return this.image.getBytes(length);
}
};
return constructor;
return PDFImage;
})();
var JpegImageLoader = (function jpegImage() {
function JpegImageLoader(objId, imageData, objs) {
var src = 'data:image/jpeg;base64,' + window.btoa(imageData);
var img = new Image();
img.onload = (function jpegImageLoaderOnload() {
this.loaded = true;
objs.resolve(objId, this);
if (this.onLoad)
this.onLoad();
}).bind(this);
img.src = src;
this.domImage = img;
}
JpegImageLoader.prototype = {
getImage: function jpegImageLoaderGetImage() {
return this.domImage;
}
};
return JpegImageLoader;
})();
function loadJpegStream(id, imageData, objs) {
var img = new Image();
img.onload = (function jpegImageLoaderOnload() {
objs.resolve(id, img);
});
img.src = 'data:image/jpeg;base64,' + window.btoa(imageData);
}

60
src/obj.js
View File

@ -3,34 +3,34 @@
'use strict';
var Name = (function nameName() {
function constructor(name) {
var Name = (function NameClosure() {
function Name(name) {
this.name = name;
}
constructor.prototype = {
Name.prototype = {
};
return constructor;
return Name;
})();
var Cmd = (function cmdCmd() {
function constructor(cmd) {
var Cmd = (function CmdClosure() {
function Cmd(cmd) {
this.cmd = cmd;
}
constructor.prototype = {
Cmd.prototype = {
};
return constructor;
return Cmd;
})();
var Dict = (function dictDict() {
function constructor() {
var Dict = (function DictClosure() {
function Dict() {
this.map = Object.create(null);
}
constructor.prototype = {
Dict.prototype = {
get: function dictGet(key1, key2, key3) {
var value;
if (typeof (value = this.map[key1]) != 'undefined' || key1 in this.map ||
@ -60,29 +60,29 @@ var Dict = (function dictDict() {
}
};
return constructor;
return Dict;
})();
var Ref = (function refRef() {
function constructor(num, gen) {
var Ref = (function RefClosure() {
function Ref(num, gen) {
this.num = num;
this.gen = gen;
}
constructor.prototype = {
Ref.prototype = {
};
return constructor;
return Ref;
})();
// The reference is identified by number and generation,
// this structure stores only one instance of the reference.
var RefSet = (function refSet() {
function constructor() {
var RefSet = (function RefSetClosure() {
function RefSet() {
this.dict = {};
}
constructor.prototype = {
RefSet.prototype = {
has: function refSetHas(ref) {
return !!this.dict['R' + ref.num + '.' + ref.gen];
},
@ -92,18 +92,18 @@ var RefSet = (function refSet() {
}
};
return constructor;
return RefSet;
})();
var Catalog = (function catalogCatalog() {
function constructor(xref) {
var Catalog = (function CatalogClosure() {
function Catalog(xref) {
this.xref = xref;
var obj = xref.getCatalogObj();
assertWellFormed(isDict(obj), 'catalog object is not a dictionary');
this.catDict = obj;
}
constructor.prototype = {
Catalog.prototype = {
get toplevelPagesDict() {
var pagesObj = this.catDict.get('Pages');
assertWellFormed(isRef(pagesObj), 'invalid top-level pages reference');
@ -253,11 +253,11 @@ var Catalog = (function catalogCatalog() {
}
};
return constructor;
return Catalog;
})();
var XRef = (function xRefXRef() {
function constructor(stream, startXRef, mainXRefEntriesOffset) {
var XRef = (function XRefClosure() {
function XRef(stream, startXRef, mainXRefEntriesOffset) {
this.stream = stream;
this.entries = [];
this.xrefstms = {};
@ -278,7 +278,7 @@ var XRef = (function xRefXRef() {
error('Invalid root reference');
}
constructor.prototype = {
XRef.prototype = {
readXRefTable: function readXRefTable(parser) {
var obj;
while (true) {
@ -598,7 +598,7 @@ var XRef = (function xRefXRef() {
e = parser.getObj();
}
// Don't cache streams since they are mutable (except images).
if (!isStream(e) || e.getImage)
if (!isStream(e) || e instanceof JpegStream)
this.cache[num] = e;
return e;
}
@ -642,7 +642,7 @@ var XRef = (function xRefXRef() {
}
};
return constructor;
return XRef;
})();
/**
@ -651,7 +651,7 @@ var XRef = (function xRefXRef() {
* inside of a worker. The `PDFObjects` implements some basic functions to
* manage these objects.
*/
var PDFObjects = (function pdfObjects() {
var PDFObjects = (function PDFObjectsClosure() {
function PDFObjects() {
this.objs = {};
}

28
src/parser.js
View File

@ -9,8 +9,8 @@ function isEOF(v) {
return v == EOF;
}
var Parser = (function parserParser() {
function constructor(lexer, allowStreams, xref) {
var Parser = (function ParserClosure() {
function Parser(lexer, allowStreams, xref) {
this.lexer = lexer;
this.allowStreams = allowStreams;
this.xref = xref;
@ -18,7 +18,7 @@ var Parser = (function parserParser() {
this.refill();
}
constructor.prototype = {
Parser.prototype = {
refill: function parserRefill() {
this.buf1 = this.lexer.getObj();
this.buf2 = this.lexer.getObj();
@ -249,20 +249,20 @@ var Parser = (function parserParser() {
if (name == 'CCITTFaxDecode' || name == 'CCF') {
return new CCITTFaxStream(stream, params);
}
TODO('filter "' + name + '" not supported yet');
warn('filter "' + name + '" not supported yet');
return stream;
}
};
return constructor;
return Parser;
})();
var Lexer = (function lexer() {
function constructor(stream) {
var Lexer = (function LexerClosure() {
function Lexer(stream) {
this.stream = stream;
}
constructor.isSpace = function lexerIsSpace(ch) {
Lexer.isSpace = function lexerIsSpace(ch) {
return ch == ' ' || ch == '\t' || ch == '\x0d' || ch == '\x0a';
};
@ -296,7 +296,7 @@ var Lexer = (function lexer() {
return -1;
}
constructor.prototype = {
Lexer.prototype = {
getNumber: function lexerGetNumber(ch) {
var floating = false;
var str = ch;
@ -558,11 +558,11 @@ var Lexer = (function lexer() {
}
};
return constructor;
return Lexer;
})();
var Linearization = (function linearizationLinearization() {
function constructor(stream) {
var Linearization = (function LinearizationClosure() {
function Linearization(stream) {
this.parser = new Parser(new Lexer(stream), false);
var obj1 = this.parser.getObj();
var obj2 = this.parser.getObj();
@ -576,7 +576,7 @@ var Linearization = (function linearizationLinearization() {
}
}
constructor.prototype = {
Linearization.prototype = {
getInt: function linearizationGetInt(name) {
var linDict = this.linDict;
var obj;
@ -635,6 +635,6 @@ var Linearization = (function linearizationLinearization() {
}
};
return constructor;
return Linearization;
})();

52
src/pattern.js
View File

@ -8,13 +8,13 @@ var PatternType = {
RADIAL: 3
};
var Pattern = (function patternPattern() {
var Pattern = (function PatternClosure() {
// Constructor should define this.getPattern
function constructor() {
function Pattern() {
error('should not call Pattern constructor');
}
constructor.prototype = {
Pattern.prototype = {
// Input: current Canvas context
// Output: the appropriate fillStyle or strokeStyle
getPattern: function pattern_getStyle(ctx) {
@ -22,11 +22,11 @@ var Pattern = (function patternPattern() {
}
};
constructor.shadingFromIR = function pattern_shadingFromIR(ctx, raw) {
Pattern.shadingFromIR = function pattern_shadingFromIR(ctx, raw) {
return Shadings[raw[0]].fromIR(ctx, raw);
};
constructor.parseShading = function pattern_shading(shading, matrix, xref,
Pattern.parseShading = function pattern_shading(shading, matrix, xref,
res, ctx) {
var dict = isStream(shading) ? shading.dict : shading;
@ -41,15 +41,15 @@ var Pattern = (function patternPattern() {
return new Shadings.Dummy();
}
};
return constructor;
return Pattern;
})();
var Shadings = {};
// Radial and axial shading have very similar implementations
// If needed, the implementations can be broken into two classes
Shadings.RadialAxial = (function radialAxialShading() {
function constructor(dict, matrix, xref, res, ctx) {
Shadings.RadialAxial = (function RadialAxialClosure() {
function RadialAxial(dict, matrix, xref, res, ctx) {
this.matrix = matrix;
this.coordsArr = dict.get('Coords');
this.shadingType = dict.get('ShadingType');
@ -102,7 +102,7 @@ Shadings.RadialAxial = (function radialAxialShading() {
this.colorStops = colorStops;
}
constructor.fromIR = function radialAxialShadingGetIR(ctx, raw) {
RadialAxial.fromIR = function radialAxialShadingGetIR(ctx, raw) {
var type = raw[1];
var colorStops = raw[2];
var p0 = raw[3];
@ -134,7 +134,7 @@ Shadings.RadialAxial = (function radialAxialShading() {
return grad;
};
constructor.prototype = {
RadialAxial.prototype = {
getIR: function radialAxialShadingGetIR() {
var coordsArr = this.coordsArr;
var type = this.shadingType;
@ -162,28 +162,32 @@ Shadings.RadialAxial = (function radialAxialShading() {
}
};
return constructor;
return RadialAxial;
})();
Shadings.Dummy = (function dummyShading() {
function constructor() {
Shadings.Dummy = (function DummyClosure() {
function Dummy() {
this.type = 'Pattern';
}
constructor.fromIR = function dummyShadingFromIR() {
Dummy.fromIR = function dummyShadingFromIR() {
return 'hotpink';
};
constructor.prototype = {
Dummy.prototype = {
getIR: function dummyShadingGetIR() {
return ['Dummy'];
}
};
return constructor;
return Dummy;
})();
var TilingPattern = (function tilingPattern() {
var PAINT_TYPE_COLORED = 1, PAINT_TYPE_UNCOLORED = 2;
var TilingPattern = (function TilingPatternClosure() {
var PaintType = {
COLORED: 1,
UNCOLORED: 2
};
var MAX_PATTERN_SIZE = 512;
function TilingPattern(IR, color, ctx, objs) {
var IRQueue = IR[2];
@ -209,13 +213,13 @@ var TilingPattern = (function tilingPattern() {
var width = botRight[0] - topLeft[0];
var height = botRight[1] - topLeft[1];
// TODO: hack to avoid OOM, we would idealy compute the tiling
// TODO: hack to avoid OOM, we would ideally compute the tiling
// pattern to be only as large as the acual size in device space
// This could be computed with .mozCurrentTransform, but still
// needs to be implemented
while (Math.abs(width) > 512 || Math.abs(height) > 512) {
width = 512;
height = 512;
while (Math.abs(width) > MAX_PATTERN_SIZE ||
Math.abs(height) > MAX_PATTERN_SIZE) {
width = height = MAX_PATTERN_SIZE;
}
var tmpCanvas = new ScratchCanvas(width, height);
@ -225,11 +229,11 @@ var TilingPattern = (function tilingPattern() {
var graphics = new CanvasGraphics(tmpCtx, objs);
switch (paintType) {
case PAINT_TYPE_COLORED:
case PaintType.COLORED:
tmpCtx.fillStyle = ctx.fillStyle;
tmpCtx.strokeStyle = ctx.strokeStyle;
break;
case PAINT_TYPE_UNCOLORED:
case PaintType.UNCOLORED:
color = Util.makeCssRgb.apply(this, color);
tmpCtx.fillStyle = color;
tmpCtx.strokeStyle = color;

166
src/stream.js
View File

@ -3,8 +3,8 @@
'use strict';
var Stream = (function streamStream() {
function constructor(arrayBuffer, start, length, dict) {
var Stream = (function StreamClosure() {
function Stream(arrayBuffer, start, length, dict) {
this.bytes = new Uint8Array(arrayBuffer);
this.start = start || 0;
this.pos = this.start;
@ -14,7 +14,7 @@ var Stream = (function streamStream() {
// required methods for a stream. if a particular stream does not
// implement these, an error should be thrown
constructor.prototype = {
Stream.prototype = {
get length() {
return this.end - this.start;
},
@ -67,11 +67,11 @@ var Stream = (function streamStream() {
isStream: true
};
return constructor;
return Stream;
})();
var StringStream = (function stringStream() {
function constructor(str) {
var StringStream = (function StringStreamClosure() {
function StringStream(str) {
var length = str.length;
var bytes = new Uint8Array(length);
for (var n = 0; n < length; ++n)
@ -79,21 +79,21 @@ var StringStream = (function stringStream() {
Stream.call(this, bytes);
}
constructor.prototype = Stream.prototype;
StringStream.prototype = Stream.prototype;
return constructor;
return StringStream;
})();
// super class for the decoding streams
var DecodeStream = (function decodeStream() {
function constructor() {
var DecodeStream = (function DecodeStreamClosure() {
function DecodeStream() {
this.pos = 0;
this.bufferLength = 0;
this.eof = false;
this.buffer = null;
}
constructor.prototype = {
DecodeStream.prototype = {
ensureBuffer: function decodestream_ensureBuffer(requested) {
var buffer = this.buffer;
var current = buffer ? buffer.byteLength : 0;
@ -178,24 +178,24 @@ var DecodeStream = (function decodeStream() {
}
};
return constructor;
return DecodeStream;
})();
var FakeStream = (function fakeStream() {
function constructor(stream) {
var FakeStream = (function FakeStreamClosure() {
function FakeStream(stream) {
this.dict = stream.dict;
DecodeStream.call(this);
}
constructor.prototype = Object.create(DecodeStream.prototype);
constructor.prototype.readBlock = function fakeStreamReadBlock() {
FakeStream.prototype = Object.create(DecodeStream.prototype);
FakeStream.prototype.readBlock = function fakeStreamReadBlock() {
var bufferLength = this.bufferLength;
bufferLength += 1024;
var buffer = this.ensureBuffer(bufferLength);
this.bufferLength = bufferLength;
};
constructor.prototype.getBytes = function fakeStreamGetBytes(length) {
FakeStream.prototype.getBytes = function fakeStreamGetBytes(length) {
var end, pos = this.pos;
if (length) {
@ -217,18 +217,20 @@ var FakeStream = (function fakeStream() {
return this.buffer.subarray(pos, end);
};
return constructor;
return FakeStream;
})();
var StreamsSequenceStream = (function streamSequenceStream() {
function constructor(streams) {
var StreamsSequenceStream = (function StreamsSequenceStreamClosure() {
function StreamsSequenceStream(streams) {
this.streams = streams;
DecodeStream.call(this);
}
constructor.prototype = Object.create(DecodeStream.prototype);
StreamsSequenceStream.prototype = Object.create(DecodeStream.prototype);
StreamsSequenceStream.prototype.readBlock =
function streamSequenceStreamReadBlock() {
constructor.prototype.readBlock = function streamSequenceStreamReadBlock() {
var streams = this.streams;
if (streams.length == 0) {
this.eof = true;
@ -243,10 +245,10 @@ var StreamsSequenceStream = (function streamSequenceStream() {
this.bufferLength = newLength;
};
return constructor;
return StreamsSequenceStream;
})();
var FlateStream = (function flateStream() {
var FlateStream = (function FlateStreamClosure() {
var codeLenCodeMap = new Uint32Array([
16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15
]);
@ -339,7 +341,7 @@ var FlateStream = (function flateStream() {
0x50003, 0x50013, 0x5000b, 0x5001b, 0x50007, 0x50017, 0x5000f, 0x00000
]), 5];
function constructor(stream) {
function FlateStream(stream) {
var bytes = stream.getBytes();
var bytesPos = 0;
@ -364,9 +366,9 @@ var FlateStream = (function flateStream() {
DecodeStream.call(this);
}
constructor.prototype = Object.create(DecodeStream.prototype);
FlateStream.prototype = Object.create(DecodeStream.prototype);
constructor.prototype.getBits = function flateStreamGetBits(bits) {
FlateStream.prototype.getBits = function flateStreamGetBits(bits) {
var codeSize = this.codeSize;
var codeBuf = this.codeBuf;
var bytes = this.bytes;
@ -386,7 +388,7 @@ var FlateStream = (function flateStream() {
return b;
};
constructor.prototype.getCode = function flateStreamGetCode(table) {
FlateStream.prototype.getCode = function flateStreamGetCode(table) {
var codes = table[0];
var maxLen = table[1];
var codeSize = this.codeSize;
@ -412,7 +414,7 @@ var FlateStream = (function flateStream() {
return codeVal;
};
constructor.prototype.generateHuffmanTable =
FlateStream.prototype.generateHuffmanTable =
function flateStreamGenerateHuffmanTable(lengths) {
var n = lengths.length;
@ -451,7 +453,7 @@ var FlateStream = (function flateStream() {
return [codes, maxLen];
};
constructor.prototype.readBlock = function flateStreamReadBlock() {
FlateStream.prototype.readBlock = function flateStreamReadBlock() {
// read block header
var hdr = this.getBits(3);
if (hdr & 1)
@ -582,11 +584,11 @@ var FlateStream = (function flateStream() {
}
};
return constructor;
return FlateStream;
})();
var PredictorStream = (function predictorStream() {
function constructor(stream, params) {
var PredictorStream = (function PredictorStreamClosure() {
function PredictorStream(stream, params) {
var predictor = this.predictor = params.get('Predictor') || 1;
if (predictor <= 1)
@ -613,9 +615,9 @@ var PredictorStream = (function predictorStream() {
return this;
}
constructor.prototype = Object.create(DecodeStream.prototype);
PredictorStream.prototype = Object.create(DecodeStream.prototype);
constructor.prototype.readBlockTiff =
PredictorStream.prototype.readBlockTiff =
function predictorStreamReadBlockTiff() {
var rowBytes = this.rowBytes;
@ -676,7 +678,9 @@ var PredictorStream = (function predictorStream() {
this.bufferLength += rowBytes;
};
constructor.prototype.readBlockPng = function predictorStreamReadBlockPng() {
PredictorStream.prototype.readBlockPng =
function predictorStreamReadBlockPng() {
var rowBytes = this.rowBytes;
var pixBytes = this.pixBytes;
@ -753,7 +757,7 @@ var PredictorStream = (function predictorStream() {
this.bufferLength += rowBytes;
};
return constructor;
return PredictorStream;
})();
/**
@ -763,7 +767,7 @@ var PredictorStream = (function predictorStream() {
* a library to decode these images and the stream behaves like all the other
* DecodeStreams.
*/
var JpegStream = (function jpegStream() {
var JpegStream = (function JpegStreamClosure() {
function isAdobeImage(bytes) {
var maxBytesScanned = Math.max(bytes.length - 16, 1024);
// Looking for APP14, 'Adobe'
@ -794,7 +798,7 @@ var JpegStream = (function jpegStream() {
return newBytes;
}
function constructor(bytes, dict, xref) {
function JpegStream(bytes, dict, xref) {
// TODO: per poppler, some images may have 'junk' before that
// need to be removed
this.dict = dict;
@ -825,9 +829,9 @@ var JpegStream = (function jpegStream() {
DecodeStream.call(this);
}
constructor.prototype = Object.create(DecodeStream.prototype);
JpegStream.prototype = Object.create(DecodeStream.prototype);
constructor.prototype.ensureBuffer = function jpegStreamEnsureBuffer(req) {
JpegStream.prototype.ensureBuffer = function jpegStreamEnsureBuffer(req) {
if (this.bufferLength)
return;
var jpegImage = new JpegImage();
@ -839,18 +843,18 @@ var JpegStream = (function jpegStream() {
this.buffer = data;
this.bufferLength = data.length;
};
constructor.prototype.getIR = function jpegStreamGetIR() {
JpegStream.prototype.getIR = function jpegStreamGetIR() {
return this.src;
};
constructor.prototype.getChar = function jpegStreamGetChar() {
JpegStream.prototype.getChar = function jpegStreamGetChar() {
error('internal error: getChar is not valid on JpegStream');
};
return constructor;
return JpegStream;
})();
var DecryptStream = (function decryptStream() {
function constructor(str, decrypt) {
var DecryptStream = (function DecryptStreamClosure() {
function DecryptStream(str, decrypt) {
this.str = str;
this.dict = str.dict;
this.decrypt = decrypt;
@ -860,9 +864,9 @@ var DecryptStream = (function decryptStream() {
var chunkSize = 512;
constructor.prototype = Object.create(DecodeStream.prototype);
DecryptStream.prototype = Object.create(DecodeStream.prototype);
constructor.prototype.readBlock = function decryptStreamReadBlock() {
DecryptStream.prototype.readBlock = function decryptStreamReadBlock() {
var chunk = this.str.getBytes(chunkSize);
if (!chunk || chunk.length == 0) {
this.eof = true;
@ -879,11 +883,11 @@ var DecryptStream = (function decryptStream() {
this.bufferLength = bufferLength;
};
return constructor;
return DecryptStream;
})();
var Ascii85Stream = (function ascii85Stream() {
function constructor(str) {
var Ascii85Stream = (function Ascii85StreamClosure() {
function Ascii85Stream(str) {
this.str = str;
this.dict = str.dict;
this.input = new Uint8Array(5);
@ -891,9 +895,9 @@ var Ascii85Stream = (function ascii85Stream() {
DecodeStream.call(this);
}
constructor.prototype = Object.create(DecodeStream.prototype);
Ascii85Stream.prototype = Object.create(DecodeStream.prototype);
constructor.prototype.readBlock = function ascii85StreamReadBlock() {
Ascii85Stream.prototype.readBlock = function ascii85StreamReadBlock() {
var tildaCode = '~'.charCodeAt(0);
var zCode = 'z'.charCodeAt(0);
var str = this.str;
@ -948,11 +952,11 @@ var Ascii85Stream = (function ascii85Stream() {
}
};
return constructor;
return Ascii85Stream;
})();
var AsciiHexStream = (function asciiHexStream() {
function constructor(str) {
var AsciiHexStream = (function AsciiHexStreamClosure() {
function AsciiHexStream(str) {
this.str = str;
this.dict = str.dict;
@ -986,9 +990,9 @@ var AsciiHexStream = (function asciiHexStream() {
102: 15
};
constructor.prototype = Object.create(DecodeStream.prototype);
AsciiHexStream.prototype = Object.create(DecodeStream.prototype);
constructor.prototype.readBlock = function asciiHexStreamReadBlock() {
AsciiHexStream.prototype.readBlock = function asciiHexStreamReadBlock() {
var gtCode = '>'.charCodeAt(0), bytes = this.str.getBytes(), c, n,
decodeLength, buffer, bufferLength, i, length;
@ -1018,10 +1022,10 @@ var AsciiHexStream = (function asciiHexStream() {
this.eof = true;
};
return constructor;
return AsciiHexStream;
})();
var CCITTFaxStream = (function ccittFaxStream() {
var CCITTFaxStream = (function CCITTFaxStreamClosure() {
var ccittEOL = -2;
var twoDimPass = 0;
@ -1449,7 +1453,7 @@ var CCITTFaxStream = (function ccittFaxStream() {
[2, 2], [2, 2], [2, 2], [2, 2]
];
function constructor(str, params) {
function CCITTFaxStream(str, params) {
this.str = str;
this.dict = str.dict;
@ -1494,9 +1498,9 @@ var CCITTFaxStream = (function ccittFaxStream() {
DecodeStream.call(this);
}
constructor.prototype = Object.create(DecodeStream.prototype);
CCITTFaxStream.prototype = Object.create(DecodeStream.prototype);
constructor.prototype.readBlock = function ccittFaxStreamReadBlock() {
CCITTFaxStream.prototype.readBlock = function ccittFaxStreamReadBlock() {
while (!this.eof) {
var c = this.lookChar();
this.buf = EOF;
@ -1505,7 +1509,7 @@ var CCITTFaxStream = (function ccittFaxStream() {
}
};
constructor.prototype.addPixels =
CCITTFaxStream.prototype.addPixels =
function ccittFaxStreamAddPixels(a1, blackPixels) {
var codingLine = this.codingLine;
var codingPos = this.codingPos;
@ -1525,7 +1529,7 @@ var CCITTFaxStream = (function ccittFaxStream() {
this.codingPos = codingPos;
};
constructor.prototype.addPixelsNeg =
CCITTFaxStream.prototype.addPixelsNeg =
function ccittFaxStreamAddPixelsNeg(a1, blackPixels) {
var codingLine = this.codingLine;
var codingPos = this.codingPos;
@ -1554,7 +1558,7 @@ var CCITTFaxStream = (function ccittFaxStream() {
this.codingPos = codingPos;
};
constructor.prototype.lookChar = function ccittFaxStreamLookChar() {
CCITTFaxStream.prototype.lookChar = function ccittFaxStreamLookChar() {
if (this.buf != EOF)
return this.buf;
@ -1873,7 +1877,9 @@ var CCITTFaxStream = (function ccittFaxStream() {
return [false, 0, false];
};
constructor.prototype.getTwoDimCode = function ccittFaxStreamGetTwoDimCode() {
CCITTFaxStream.prototype.getTwoDimCode =
function ccittFaxStreamGetTwoDimCode() {
var code = 0;
var p;
if (this.eoblock) {
@ -1892,7 +1898,9 @@ var CCITTFaxStream = (function ccittFaxStream() {
return EOF;
};
constructor.prototype.getWhiteCode = function ccittFaxStreamGetWhiteCode() {
CCITTFaxStream.prototype.getWhiteCode =
function ccittFaxStreamGetWhiteCode() {
var code = 0;
var p;
var n;
@ -1924,7 +1932,9 @@ var CCITTFaxStream = (function ccittFaxStream() {
return 1;
};
constructor.prototype.getBlackCode = function ccittFaxStreamGetBlackCode() {
CCITTFaxStream.prototype.getBlackCode =
function ccittFaxStreamGetBlackCode() {
var code, p;
if (this.eoblock) {
code = this.lookBits(13);
@ -1959,7 +1969,7 @@ var CCITTFaxStream = (function ccittFaxStream() {
return 1;
};
constructor.prototype.lookBits = function ccittFaxStreamLookBits(n) {
CCITTFaxStream.prototype.lookBits = function ccittFaxStreamLookBits(n) {
var c;
while (this.inputBits < n) {
if ((c = this.str.getByte()) == null) {
@ -1974,16 +1984,16 @@ var CCITTFaxStream = (function ccittFaxStream() {
return (this.inputBuf >> (this.inputBits - n)) & (0xFFFF >> (16 - n));
};
constructor.prototype.eatBits = function ccittFaxStreamEatBits(n) {
CCITTFaxStream.prototype.eatBits = function ccittFaxStreamEatBits(n) {
if ((this.inputBits -= n) < 0)
this.inputBits = 0;
};
return constructor;
return CCITTFaxStream;
})();
var LZWStream = (function lzwStream() {
function constructor(str, earlyChange) {
var LZWStream = (function LZWStreamClosure() {
function LZWStream(str, earlyChange) {
this.str = str;
this.dict = str.dict;
this.cachedData = 0;
@ -2009,9 +2019,9 @@ var LZWStream = (function lzwStream() {
DecodeStream.call(this);
}
constructor.prototype = Object.create(DecodeStream.prototype);
LZWStream.prototype = Object.create(DecodeStream.prototype);
constructor.prototype.readBits = function lzwStreamReadBits(n) {
LZWStream.prototype.readBits = function lzwStreamReadBits(n) {
var bitsCached = this.bitsCached;
var cachedData = this.cachedData;
while (bitsCached < n) {
@ -2029,7 +2039,7 @@ var LZWStream = (function lzwStream() {
return (cachedData >>> bitsCached) & ((1 << n) - 1);
};
constructor.prototype.readBlock = function lzwStreamReadBlock() {
LZWStream.prototype.readBlock = function lzwStreamReadBlock() {
var blockSize = 512;
var estimatedDecodedSize = blockSize * 2, decodedSizeDelta = blockSize;
var i, j, q;
@ -2108,6 +2118,6 @@ var LZWStream = (function lzwStream() {
this.bufferLength = currentBufferLength;
};
return constructor;
return LZWStream;
})();

42
src/util.js
View File

@ -76,24 +76,24 @@ function stringToBytes(str) {
var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
var Util = (function utilUtil() {
function constructor() {}
constructor.makeCssRgb = function makergb(r, g, b) {
var Util = (function UtilClosure() {
function Util() {}
Util.makeCssRgb = function makergb(r, g, b) {
var ri = (255 * r) | 0, gi = (255 * g) | 0, bi = (255 * b) | 0;
return 'rgb(' + ri + ',' + gi + ',' + bi + ')';
};
constructor.makeCssCmyk = function makecmyk(c, m, y, k) {
Util.makeCssCmyk = function makecmyk(c, m, y, k) {
c = (new DeviceCmykCS()).getRgb([c, m, y, k]);
var ri = (255 * c[0]) | 0, gi = (255 * c[1]) | 0, bi = (255 * c[2]) | 0;
return 'rgb(' + ri + ',' + gi + ',' + bi + ')';
};
constructor.applyTransform = function apply(p, m) {
Util.applyTransform = function apply(p, m) {
var xt = p[0] * m[0] + p[1] * m[2] + m[4];
var yt = p[0] * m[1] + p[1] * m[3] + m[5];
return [xt, yt];
};
return constructor;
return Util;
})();
var PDFStringTranslateTable = [
@ -197,7 +197,7 @@ function isPDFFunction(v) {
* can be set. If any of these happens twice or the data is required before
* it was set, an exception is throw.
*/
var Promise = (function promise() {
var Promise = (function PromiseClosure() {
var EMPTY_PROMISE = {};
/**
@ -217,7 +217,33 @@ var Promise = (function promise() {
}
this.callbacks = [];
};
/**
* Builds a promise that is resolved when all the passed in promises are
* resolved.
* @param {Promise[]} promises Array of promises to wait for.
* @return {Promise} New dependant promise.
*/
Promise.all = function(promises) {
var deferred = new Promise();
var unresolved = promises.length;
var results = [];
if (unresolved === 0) {
deferred.resolve(results);
return deferred;
}
for (var i = 0; i < unresolved; ++i) {
var promise = promises[i];
promise.then((function(i) {
return function(value) {
results[i] = value;
unresolved--;
if (unresolved === 0)
deferred.resolve(results);
};
})(i));
}
return deferred;
};
Promise.prototype = {
hasData: false,

51
src/worker.js
View File

@ -6,6 +6,8 @@
function MessageHandler(name, comObj) {
this.name = name;
this.comObj = comObj;
this.callbackIndex = 1;
var callbacks = this.callbacks = {};
var ah = this.actionHandler = {};
ah['console_log'] = [function ahConsoleLog(data) {
@ -14,11 +16,33 @@ function MessageHandler(name, comObj) {
ah['console_error'] = [function ahConsoleError(data) {
console.error.apply(console, data);
}];
comObj.onmessage = function messageHandlerComObjOnMessage(event) {
var data = event.data;
if (data.action in ah) {
if (data.isReply) {
var callbackId = data.callbackId;
if (data.callbackId in callbacks) {
var callback = callbacks[callbackId];
delete callbacks[callbackId];
callback(data.data);
} else {
throw 'Cannot resolve callback ' + callbackId;
}
} else if (data.action in ah) {
var action = ah[data.action];
action[0].call(action[1], data.data);
if (data.callbackId) {
var promise = new Promise();
promise.then(function(resolvedData) {
comObj.postMessage({
isReply: true,
callbackId: data.callbackId,
data: resolvedData
});
});
action[0].call(action[1], data.data, promise);
} else {
action[0].call(action[1], data.data);
}
} else {
throw 'Unkown action from worker: ' + data.action;
}
@ -33,12 +57,23 @@ MessageHandler.prototype = {
}
ah[actionName] = [handler, scope];
},
send: function messageHandlerSend(actionName, data) {
this.comObj.postMessage({
/**
* Sends a message to the comObj to invoke the action with the supplied data.
* @param {String} actionName Action to call.
* @param {JSON} data JSON data to send.
* @param {function} [callback] Optional callback that will handle a reply.
*/
send: function messageHandlerSend(actionName, data, callback) {
var message = {
action: actionName,
data: data
});
};
if (callback) {
var callbackId = this.callbackIndex++;
this.callbacks[callbackId] = callback;
message.callbackId = callbackId;
}
this.comObj.postMessage(message);
}
};
@ -83,8 +118,8 @@ var WorkerMessageHandler = {
} catch (e) {
// Turn the error into an obj that can be serialized
e = {
message: e.message,
stack: e.stack
message: typeof e === 'object' ? e.message : e,
stack: typeof e === 'object' ? e.stack : null
};
handler.send('page_error', {
pageNum: pageNum,

12
test/driver.js
View File

@ -139,6 +139,11 @@ function nextPage(task, loadError) {
if (task.skipPages && task.skipPages.indexOf(task.pageNum) >= 0) {
log(' skipping page ' + task.pageNum + '/' + task.pdfDoc.numPages +
'... ');
// empty the canvas
canvas.width = 1;
canvas.height = 1;
clear(canvas.getContext('2d'));
snapshotCurrentPage(task, '');
return;
}
@ -160,6 +165,10 @@ function nextPage(task, loadError) {
canvas.height = pageHeight * pdfToCssUnitsCoef;
clear(ctx);
// using non-attached to the document div to test
// text layer creation operations
var textLayer = document.createElement('div');
page.startRendering(
ctx,
function nextPageStartRendering(error) {
@ -167,7 +176,8 @@ function nextPage(task, loadError) {
if (error)
failureMessage = 'render : ' + error.message;
snapshotCurrentPage(task, failureMessage);
}
},
textLayer
);
} catch (e) {
failure = 'page setup : ' + e.toString();

3
test/pdfs/.gitignore vendored
View File

@ -17,3 +17,6 @@
!devicen.pdf
!cmykjpeg.pdf
!issue840.pdf
!scan-bad.pdf
!freeculture.pdf
!issue918.pdf

1
test/pdfs/aboutstacks.pdf.link Normal file
View File

@ -0,0 +1 @@
http://greenhousechallenge.org/media/item/313/38/About-Stacks.pdf

1
test/pdfs/bpl13210.pdf.link Normal file
View File

@ -0,0 +1 @@
http://h20000.www2.hp.com/bc/docs/support/SupportManual/bpl13210/bpl13210.pdf

BIN
test/pdfs/freeculture.pdf Normal file
View File

Binary file not shown.

1
test/pdfs/geothermal.pdf.link Normal file
View File

@ -0,0 +1 @@
http://geothermal.inel.gov/publications/future_of_geothermal_energy.pdf

BIN
test/pdfs/issue918.pdf Normal file
View File

Binary file not shown.

1
test/pdfs/issue919.pdf.link Normal file
View File

@ -0,0 +1 @@
http://agb.traviangames.com/Travian_AR_Terms.pdf

1
test/pdfs/lista_preliminar.pdf.link Normal file
View File

@ -0,0 +1 @@
http://www.lfg.com.br/concursodebolsas/lista_preliminar_classificao.pdf

BIN
test/pdfs/scan-bad.pdf Executable file
View File

Binary file not shown.

1
test/pdfs/tutorial.pdf.link Normal file
View File

@ -0,0 +1 @@
http://cplusplus.com/files/tutorial.pdf

8
test/test.py
View File

@ -12,6 +12,7 @@ DOC_ROOT = os.path.abspath(os.path.join(os.path.dirname(__file__),".."))
ANAL = True
DEFAULT_MANIFEST_FILE = 'test_manifest.json'
EQLOG_FILE = 'eq.log'
BROWSERLOG_FILE = 'browser.log'
REFDIR = 'ref'
TMPDIR = 'tmp'
VERBOSE = False
@ -229,6 +230,7 @@ class BaseBrowserCommand(object):
def setup(self):
self.tempDir = tempfile.mkdtemp()
self.profileDir = os.path.join(self.tempDir, "profile")
self.browserLog = open(BROWSERLOG_FILE, "w")
def teardown(self):
# If the browser is still running, wait up to ten seconds for it to quit
@ -245,6 +247,8 @@ class BaseBrowserCommand(object):
if self.tempDir is not None and os.path.exists(self.tempDir):
shutil.rmtree(self.tempDir)
self.browserLog.close()
def start(self, url):
raise Exception("Can't start BaseBrowserCommand")
@ -262,7 +266,7 @@ class FirefoxBrowserCommand(BaseBrowserCommand):
if platform.system() == "Darwin":
cmds.append("-foreground")
cmds.extend(["-no-remote", "-profile", self.profileDir, url])
self.process = subprocess.Popen(cmds)
self.process = subprocess.Popen(cmds, stdout = self.browserLog, stderr = self.browserLog)
class ChromeBrowserCommand(BaseBrowserCommand):
def _fixupMacPath(self):
@ -272,7 +276,7 @@ class ChromeBrowserCommand(BaseBrowserCommand):
cmds = [self.path]
cmds.extend(["--user-data-dir=%s" % self.profileDir,
"--no-first-run", "--disable-sync", url])
self.process = subprocess.Popen(cmds)
self.process = subprocess.Popen(cmds, stdout = self.browserLog, stderr = self.browserLog)
def makeBrowserCommand(browser):
path = browser["path"].lower()

67
test/test_manifest.json
View File

@ -20,7 +20,6 @@
{ "id": "intelisa-load",
"file": "pdfs/intelisa.pdf",
"md5": "f5712097d29287a97f1278839814f682",
"md5": "f3ed5487d1afa34d8b77c0c734a95c79",
"link": true,
"rounds": 1,
"type": "load"
@ -88,6 +87,13 @@
"rounds": 1,
"type": "eq"
},
{ "id": "freeculture",
"file": "pdfs/freeculture.pdf",
"md5": "dcdf3a8268e6a18938a42d5149efcfca",
"rounds": 1,
"pageLimit": 5,
"type": "eq"
},
{ "id": "wnv_chinese-pdf",
"file": "pdfs/wnv_chinese.pdf",
"md5": "db682638e68391125e8982d3c984841e",
@ -221,6 +227,12 @@
"rounds": 1,
"type": "load"
},
{ "id": "scan-bad",
"file": "pdfs/scan-bad.pdf",
"md5": "4cf988f01ab83f61aca57f406dfd6584",
"rounds": 1,
"type": "load"
},
{ "id": "ibwa-bad",
"file": "pdfs/ibwa-bad.pdf",
"md5": "6ca059d32b74ac2688ae06f727fee755",
@ -296,5 +308,58 @@
"md5": "20d88011dd7e3c4fb5274979094dab93",
"rounds": 1,
"type": "eq"
},
{ "id": "bpl13210",
"file": "pdfs/bpl13210.pdf",
"md5": "8a08512baa9fa95378d9ad4b995947c7",
"link": true,
"pageLimit": 5,
"rounds": 1,
"type": "eq"
},
{ "id": "tutorial",
"file": "pdfs/tutorial.pdf",
"md5": "6e122f618c27f3aa9a689423e3be6b8d",
"link": true,
"rounds": 1,
"type": "eq"
},
{ "id": "geothermal.pdf",
"file": "pdfs/geothermal.pdf",
"md5": "ecffc0ce38ffdf1e90dc952f186e9a91",
"rounds": 1,
"link": true,
"pageLimit": 5,
"skipPages": [1],
"type": "eq"
},
{ "id": "lista_preliminar",
"file": "pdfs/lista_preliminar.pdf",
"md5": "4eff251319eeb660ba8a7a5cfac7787d",
"rounds": 1,
"link": true,
"pageLimit": 3,
"type": "eq"
},
{ "id": "issue919",
"file": "pdfs/issue919.pdf",
"md5": "3a1716a512aca4d7a8d6106bd4885d14",
"rounds": 1,
"link": true,
"pageLimit": 3,
"type": "eq"
},
{ "id": "issue918",
"file": "pdfs/issue918.pdf",
"md5": "d582cc0f2592ae82936589ced2a47e55",
"rounds": 1,
"type": "eq"
},
{ "id": "aboutstacks",
"file": "pdfs/aboutstacks.pdf",
"md5": "6e7c8416a293ba2d83bc8dd20c6ccf51",
"rounds": 1,
"link": true,
"type": "eq"
}
]

5
web/viewer.html
View File

@ -27,9 +27,9 @@
<script type="text/javascript" src="../src/worker.js"></script> <!-- PDFJSSCRIPT_REMOVE -->
<script type="text/javascript" src="../external/jpgjs/jpg.js"></script> <!-- PDFJSSCRIPT_REMOVE -->
<script type="text/javascript">PDFJS.workerSrc = '../src/worker_loader.js';</script> <!-- PDFJSSCRIPT_REMOVE -->
<script type="text/javascript" src="viewer.js"></script>
</head>
</head>
<body>
<div id="controls">
@ -139,4 +139,3 @@
<div id="viewer"></div>
</body>
</html>

101
web/viewer.js
View File

@ -360,6 +360,7 @@ var PDFView = {
outlineScrollView.setAttribute('hidden', 'true');
thumbsSwitchButton.setAttribute('data-selected', true);
outlineSwitchButton.removeAttribute('data-selected');
updateThumbViewArea();
break;
case 'outline':
thumbsScrollView.setAttribute('hidden', 'true');
@ -394,6 +395,34 @@ var PDFView = {
currentHeight += singlePage.height * singlePage.scale + kBottomMargin;
}
return visiblePages;
},
getVisibleThumbs: function pdfViewGetVisibleThumbs() {
var thumbs = this.thumbnails;
var kBottomMargin = 5;
var visibleThumbs = [];
var view = document.getElementById('sidebarScrollView');
var currentHeight = kBottomMargin;
var top = view.scrollTop;
for (var i = 1; i <= thumbs.length; ++i) {
var thumb = thumbs[i - 1];
var thumbHeight = thumb.height * thumb.scaleY + kBottomMargin;
if (currentHeight + thumbHeight > top)
break;
currentHeight += thumbHeight;
}
var bottom = top + view.clientHeight;
for (; i <= thumbs.length && currentHeight < bottom; ++i) {
var singleThumb = thumbs[i - 1];
visibleThumbs.push({ id: singleThumb.id, y: currentHeight,
view: singleThumb });
currentHeight += singleThumb.height * singleThumb.scaleY + kBottomMargin;
}
return visibleThumbs;
}
};
@ -584,7 +613,7 @@ var PageView = function pageView(container, content, id, pageWidth, pageHeight,
];
if (scale && scale !== PDFView.currentScale)
PDFView.setScale(scale, true);
PDFView.parseScale(scale, true);
setTimeout(function pageViewScrollIntoViewRelayout() {
// letting page to re-layout before scrolling
@ -667,6 +696,19 @@ var ThumbnailView = function thumbnailView(container, page, id, pageRatio) {
return false;
};
var view = page.view;
this.width = view.width;
this.height = view.height;
this.id = id;
var maxThumbSize = 134;
var canvasWidth = pageRatio >= 1 ? maxThumbSize :
maxThumbSize * pageRatio;
var canvasHeight = pageRatio <= 1 ? maxThumbSize :
maxThumbSize / pageRatio;
var scaleX = this.scaleX = (canvasWidth / this.width);
var scaleY = this.scaleY = (canvasHeight / this.height);
var div = document.createElement('div');
div.id = 'thumbnailContainer' + id;
div.className = 'thumbnail';
@ -681,11 +723,8 @@ var ThumbnailView = function thumbnailView(container, page, id, pageRatio) {
canvas.id = 'thumbnail' + id;
canvas.mozOpaque = true;
var maxThumbSize = 134;
canvas.width = pageRatio >= 1 ? maxThumbSize :
maxThumbSize * pageRatio;
canvas.height = pageRatio <= 1 ? maxThumbSize :
maxThumbSize / pageRatio;
canvas.width = canvasWidth;
canvas.height = canvasHeight;
div.setAttribute('data-loaded', true);
div.appendChild(canvas);
@ -697,8 +736,6 @@ var ThumbnailView = function thumbnailView(container, page, id, pageRatio) {
ctx.restore();
var view = page.view;
var scaleX = (canvas.width / page.width);
var scaleY = (canvas.height / page.height);
ctx.translate(-view.x * scaleX, -view.y * scaleY);
div.style.width = (view.width * scaleX) + 'px';
div.style.height = (view.height * scaleY) + 'px';
@ -779,6 +816,12 @@ window.addEventListener('load', function webViewerLoad(evt) {
document.getElementById('fileInput').setAttribute('hidden', 'true');
else
document.getElementById('fileInput').value = null;
if ('disableWorker' in params)
PDFJS.disableWorker = params['disableWorker'] === 'true' ? true : false;
var sidebarScrollView = document.getElementById('sidebarScrollView');
sidebarScrollView.addEventListener('scroll', updateThumbViewArea, true);
}, true);
window.addEventListener('unload', function webViewerUnload(evt) {
@ -817,6 +860,29 @@ window.addEventListener('scroll', function webViewerScroll(evt) {
updateViewarea();
}, true);
var thumbnailTimer;
function updateThumbViewArea() {
// Only render thumbs after pausing scrolling for this amount of time
// (makes UI more responsive)
var delay = 50; // in ms
if (thumbnailTimer)
clearTimeout(thumbnailTimer);
thumbnailTimer = setTimeout(function() {
var visibleThumbs = PDFView.getVisibleThumbs();
for (var i = 0; i < visibleThumbs.length; i++) {
var thumb = visibleThumbs[i];
PDFView.thumbnails[thumb.id - 1].draw();
}
}, delay);
}
window.addEventListener('transitionend', updateThumbViewArea, true);
window.addEventListener('webkitTransitionEnd', updateThumbViewArea, true);
window.addEventListener('resize', function webViewerResize(evt) {
if (document.getElementById('pageWidthOption').selected ||
document.getElementById('pageFitOption').selected)
@ -857,25 +923,6 @@ window.addEventListener('change', function webViewerChange(evt) {
document.getElementById('download').setAttribute('hidden', 'true');
}, true);
window.addEventListener('transitionend', function webViewerTransitionend(evt) {
var pageIndex = 0;
var pagesCount = PDFView.pages.length;
var container = document.getElementById('sidebarView');
container._interval = window.setInterval(function interval() {
// skipping the thumbnails with set images
while (pageIndex < pagesCount && PDFView.thumbnails[pageIndex].hasImage)
pageIndex++;
if (pageIndex >= pagesCount) {
window.clearInterval(container._interval);
return;
}
PDFView.thumbnails[pageIndex++].draw();
}, 500);
}, true);
window.addEventListener('scalechange', function scalechange(evt) {
var customScaleOption = document.getElementById('customScaleOption');
customScaleOption.selected = false;