yetangitu/pdf.js
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Merge upstream.

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This commit is contained in:
Brendan Dahl 2012-02-08 16:31:30 -08:00
commit a5d9ff8568
66 changed files with 6462 additions and 1424 deletions
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85
src/canvas.js
View file

@ -23,6 +23,7 @@ var CanvasExtraState = (function CanvasExtraStateClosure() {
this.alphaIsShape = false;
this.fontSize = 0;
this.textMatrix = IDENTITY_MATRIX;
this.fontMatrix = IDENTITY_MATRIX;
this.leading = 0;
// Current point (in user coordinates)
this.x = 0;
@ -48,6 +49,7 @@ var CanvasExtraState = (function CanvasExtraStateClosure() {
// Note: fill alpha applies to all non-stroking operations
this.fillAlpha = 1;
this.strokeAlpha = 1;
this.lineWidth = 1;
this.old = old;
}
@ -329,6 +331,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
// Graphics state
setLineWidth: function canvasGraphicsSetLineWidth(width) {
this.current.lineWidth = width;
this.ctx.lineWidth = width;
},
setLineCap: function canvasGraphicsSetLineCap(style) {
@ -442,6 +445,8 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
var ctx = this.ctx;
var strokeColor = this.current.strokeColor;
if (this.current.lineWidth === 0)
ctx.lineWidth = this.getSinglePixelWidth();
// For stroke we want to temporarily change the global alpha to the
// stroking alpha.
ctx.globalAlpha = this.current.strokeAlpha;
@ -542,12 +547,32 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
},
setFont: function canvasGraphicsSetFont(fontRefName, size) {
var fontObj = this.objs.get(fontRefName).fontObj;
var current = this.current;
if (!fontObj) {
throw 'Can\'t find font for ' + fontRefName;
if (!fontObj)
error('Can\'t find font for ' + fontRefName);
// Slice-clone matrix so we can manipulate it without affecting original
if (fontObj.fontMatrix)
current.fontMatrix = fontObj.fontMatrix.slice(0);
else
current.fontMatrix = IDENTITY_MATRIX.slice(0);
// A valid matrix needs all main diagonal elements to be non-zero
// This also ensures we bypass FF bugzilla bug #719844.
if (current.fontMatrix[0] === 0 ||
current.fontMatrix[3] === 0) {
warn('Invalid font matrix for font ' + fontRefName);
}
var name = fontObj.loadedName || 'sans-serif';
// The spec for Tf (setFont) says that 'size' specifies the font 'scale',
// and in some docs this can be negative (inverted x-y axes).
// We implement this condition with fontMatrix.
if (size < 0) {
size = -size;
current.fontMatrix[0] *= -1;
current.fontMatrix[3] *= -1;
}
this.current.font = fontObj;
this.current.fontSize = size;
@ -557,7 +582,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
(fontObj.bold ? 'bold' : 'normal');
var italic = fontObj.italic ? 'italic' : 'normal';
var serif = fontObj.serif ? 'serif' : 'sans-serif';
var serif = fontObj.isSerifFont ? 'serif' : 'sans-serif';
var typeface = '"' + name + '", ' + serif;
var rule = italic + ' ' + bold + ' ' + size + 'px ' + typeface;
this.ctx.font = rule;
@ -591,7 +616,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
var ctx = this.ctx;
var current = this.current;
var textHScale = current.textHScale;
var fontMatrix = current.font.fontMatrix || IDENTITY_MATRIX;
var fontMatrix = current.fontMatrix || IDENTITY_MATRIX;
ctx.transform.apply(ctx, current.textMatrix);
ctx.scale(1, -1);
@ -625,7 +650,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
var charSpacing = current.charSpacing;
var wordSpacing = current.wordSpacing;
var textHScale = current.textHScale;
var fontMatrix = font.fontMatrix || IDENTITY_MATRIX;
var fontMatrix = current.fontMatrix || IDENTITY_MATRIX;
var textHScale2 = textHScale * fontMatrix[0];
var glyphsLength = glyphs.length;
var textLayer = this.textLayer;
@ -640,7 +665,6 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
ctx.translate(current.x, current.y);
ctx.scale(textHScale, 1);
ctx.lineWidth /= current.textMatrix[0];
if (textSelection) {
this.save();
@ -664,7 +688,8 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
this.restore();
var transformed = Util.applyTransform([glyph.width, 0], fontMatrix);
var width = transformed[0] * fontSize + charSpacing;
var width = transformed[0] * fontSize +
Util.sign(current.fontMatrix[0]) * charSpacing;
ctx.translate(width, 0);
current.x += width * textHScale;
@ -677,49 +702,58 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
} else {
ctx.save();
this.applyTextTransforms();
ctx.lineWidth /= current.textMatrix[0] * fontMatrix[0];
var lineWidth = current.lineWidth;
var scale = Math.abs(current.textMatrix[0] * fontMatrix[0]);
if (scale == 0 || lineWidth == 0)
lineWidth = this.getSinglePixelWidth();
else
lineWidth /= scale;
ctx.lineWidth = lineWidth;
if (textSelection)
text.geom = this.getTextGeometry();
var width = 0;
var x = 0;
for (var i = 0; i < glyphsLength; ++i) {
var glyph = glyphs[i];
if (glyph === null) {
// word break
width += wordSpacing;
x += Util.sign(current.fontMatrix[0]) * wordSpacing;
continue;
}
var char = glyph.fontChar;
var charWidth = glyph.width * fontSize * 0.001 + charSpacing;
var charWidth = glyph.width * fontSize * 0.001 +
Util.sign(current.fontMatrix[0]) * charSpacing;
switch (textRenderingMode) {
default: // other unsupported rendering modes
case TextRenderingMode.FILL:
case TextRenderingMode.FILL_ADD_TO_PATH:
ctx.fillText(char, width, 0);
ctx.fillText(char, x, 0);
break;
case TextRenderingMode.STROKE:
case TextRenderingMode.STROKE_ADD_TO_PATH:
ctx.strokeText(char, width, 0);
ctx.strokeText(char, x, 0);
break;
case TextRenderingMode.FILL_STROKE:
case TextRenderingMode.FILL_STROKE_ADD_TO_PATH:
ctx.fillText(char, width, 0);
ctx.strokeText(char, width, 0);
ctx.fillText(char, x, 0);
ctx.strokeText(char, x, 0);
break;
case TextRenderingMode.INVISIBLE:
break;
}
width += charWidth;
x += charWidth;
text.str += glyph.unicode === ' ' ? '\u00A0' : glyph.unicode;
text.length++;
text.canvasWidth += charWidth;
}
current.x += width * textHScale2;
current.x += x * textHScale2;
ctx.restore();
}
@ -735,7 +769,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
var fontSize = current.fontSize;
var textHScale = current.textHScale;
if (!font.coded)
textHScale *= (font.fontMatrix || IDENTITY_MATRIX)[0];
textHScale *= (current.fontMatrix || IDENTITY_MATRIX)[0];
var arrLength = arr.length;
var textLayer = this.textLayer;
var text = {str: '', length: 0, canvasWidth: 0, geom: {}};
@ -832,8 +866,8 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
},
setStrokeColor: function canvasGraphicsSetStrokeColor(/*...*/) {
var cs = this.current.strokeColorSpace;
var color = cs.getRgb(arguments);
var color = Util.makeCssRgb.apply(null, cs.getRgb(arguments));
var rgbColor = cs.getRgb(arguments);
var color = Util.makeCssRgb(rgbColor[0], rgbColor[1], rgbColor[2]);
this.ctx.strokeStyle = color;
this.current.strokeColor = color;
},
@ -855,7 +889,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
} else if (IR[0] == 'RadialAxial' || IR[0] == 'Dummy') {
var pattern = Pattern.shadingFromIR(this.ctx, IR);
} else {
throw 'Unkown IR type';
error('Unkown IR type ' + IR[0]);
}
return pattern;
},
@ -870,7 +904,8 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
},
setFillColor: function canvasGraphicsSetFillColor(/*...*/) {
var cs = this.current.fillColorSpace;
var color = Util.makeCssRgb.apply(null, cs.getRgb(arguments));
var rgbColor = cs.getRgb(arguments);
var color = Util.makeCssRgb(rgbColor[0], rgbColor[1], rgbColor[2]);
this.ctx.fillStyle = color;
this.current.fillColor = color;
},
@ -1141,6 +1176,10 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
},
restoreFillRule: function canvasGraphicsRestoreFillRule(rule) {
this.ctx.mozFillRule = rule;
},
getSinglePixelWidth: function getSinglePixelWidth(scale) {
var inverse = this.ctx.mozCurrentTransformInverse;
return Math.abs(inverse[0] + inverse[2]);
}
};

177
src/colorspace.js
View file

@ -57,6 +57,11 @@ var ColorSpace = (function ColorSpaceClosure() {
return new AlternateCS(numComps, ColorSpace.fromIR(alt),
PDFFunction.fromIR(tintFnIR));
case 'LabCS':
var whitePoint = IR[1].WhitePoint;
var blackPoint = IR[1].BlackPoint;
var range = IR[1].Range;
return new LabCS(whitePoint, blackPoint, range);
default:
error('Unkown name ' + name);
}
@ -146,6 +151,8 @@ var ColorSpace = (function ColorSpaceClosure() {
var tintFnIR = PDFFunction.getIR(xref, xref.fetchIfRef(cs[3]));
return ['AlternateCS', numComps, alt, tintFnIR];
case 'Lab':
var params = cs[1].map;
return ['LabCS', params];
default:
error('unimplemented color space object "' + mode + '"');
}
@ -369,55 +376,16 @@ var DeviceCmykCS = (function DeviceCmykCSClosure() {
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;
var x, r, g, b;
// this is a matrix multiplication, unrolled for performance
// code is taken from the poppler implementation
x = c1 * m1 * y1 * k1; // 0 0 0 0
r = g = b = x;
x = c1 * m1 * y1 * k; // 0 0 0 1
r += 0.1373 * x;
g += 0.1216 * x;
b += 0.1255 * x;
x = c1 * m1 * y * k1; // 0 0 1 0
r += x;
g += 0.9490 * x;
x = c1 * m1 * y * k; // 0 0 1 1
r += 0.1098 * x;
g += 0.1020 * x;
x = c1 * m * y1 * k1; // 0 1 0 0
r += 0.9255 * x;
b += 0.5490 * x;
x = c1 * m * y1 * k; // 0 1 0 1
r += 0.1412 * x;
x = c1 * m * y * k1; // 0 1 1 0
r += 0.9294 * x;
g += 0.1098 * x;
b += 0.1412 * x;
x = c1 * m * y * k; // 0 1 1 1
r += 0.1333 * x;
x = c * m1 * y1 * k1; // 1 0 0 0
g += 0.6784 * x;
b += 0.9373 * x;
x = c * m1 * y1 * k; // 1 0 0 1
g += 0.0588 * x;
b += 0.1412 * x;
x = c * m1 * y * k1; // 1 0 1 0
g += 0.6510 * x;
b += 0.3137 * x;
x = c * m1 * y * k; // 1 0 1 1
g += 0.0745 * x;
x = c * m * y1 * k1; // 1 1 0 0
r += 0.1804 * x;
g += 0.1922 * x;
b += 0.5725 * x;
x = c * m * y1 * k; // 1 1 0 1
b += 0.0078 * x;
x = c * m * y * k1; // 1 1 1 0
r += 0.2118 * x;
g += 0.2119 * x;
b += 0.2235 * x;
// CMYK -> CMY: http://www.easyrgb.com/index.php?X=MATH&H=14#text14
c = (c * (1 - k) + k);
m = (m * (1 - k) + k);
y = (y * (1 - k) + k);
// CMY -> RGB: http://www.easyrgb.com/index.php?X=MATH&H=12#text12
var r = (1 - c);
var g = (1 - m);
var b = (1 - y);
return [r, g, b];
},
@ -448,3 +416,116 @@ var DeviceCmykCS = (function DeviceCmykCSClosure() {
return DeviceCmykCS;
})();
//
// LabCS: Based on "PDF Reference, Sixth Ed", p.250
//
var LabCS = (function LabCSClosure() {
function LabCS(whitePoint, blackPoint, range) {
this.name = 'Lab';
this.numComps = 3;
this.defaultColor = [0, 0, 0];
if (!whitePoint)
error('WhitePoint missing - required for color space Lab');
blackPoint = blackPoint || [0, 0, 0];
range = range || [-100, 100, -100, 100];
// Translate args to spec variables
this.XW = whitePoint[0];
this.YW = whitePoint[1];
this.ZW = whitePoint[2];
this.amin = range[0];
this.amax = range[1];
this.bmin = range[2];
this.bmax = range[3];
// These are here just for completeness - the spec doesn't offer any
// formulas that use BlackPoint in Lab
this.XB = blackPoint[0];
this.YB = blackPoint[1];
this.ZB = blackPoint[2];
// Validate vars as per spec
if (this.XW < 0 || this.ZW < 0 || this.YW !== 1)
error('Invalid WhitePoint components, no fallback available');
if (this.XB < 0 || this.YB < 0 || this.ZB < 0) {
warn('Invalid BlackPoint, falling back to default');
this.XB = this.YB = this.ZB = 0;
}
if (this.amin > this.amax || this.bmin > this.bmax) {
warn('Invalid Range, falling back to defaults');
this.amin = -100;
this.amax = 100;
this.bmin = -100;
this.bmax = 100;
}
};
// Function g(x) from spec
function g(x) {
if (x >= 6 / 29)
return x * x * x;
else
return (108 / 841) * (x - 4 / 29);
}
LabCS.prototype = {
getRgb: function labcs_getRgb(color) {
// Ls,as,bs <---> L*,a*,b* in the spec
var Ls = color[0], as = color[1], bs = color[2];
// Adjust limits of 'as' and 'bs'
as = as > this.amax ? this.amax : as;
as = as < this.amin ? this.amin : as;
bs = bs > this.bmax ? this.bmax : bs;
bs = bs < this.bmin ? this.bmin : bs;
// Computes intermediate variables X,Y,Z as per spec
var M = (Ls + 16) / 116;
var L = M + (as / 500);
var N = M - (bs / 200);
var X = this.XW * g(L);
var Y = this.YW * g(M);
var Z = this.ZW * g(N);
// XYZ to RGB 3x3 matrix, from:
// http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html#RTFToC18
var XYZtoRGB = [3.240479, -1.537150, -0.498535,
-0.969256, 1.875992, 0.041556,
0.055648, -0.204043, 1.057311];
return Util.apply3dTransform(XYZtoRGB, [X, Y, Z]);
},
getRgbBuffer: function labcs_getRgbBuffer(input, bits) {
if (bits == 8)
return input;
var scale = 255 / ((1 << bits) - 1);
var i, length = input.length / 3;
var rgbBuf = new Uint8Array(length);
var j = 0;
for (i = 0; i < length; ++i) {
// Convert L*, a*, s* into RGB
var rgb = this.getRgb([input[i], input[i + 1], input[i + 2]]);
rgbBuf[j++] = rgb[0];
rgbBuf[j++] = rgb[1];
rgbBuf[j++] = rgb[2];
}
return rgbBuf;
},
isDefaultDecode: function labcs_isDefaultDecode(decodeMap) {
// From Table 90 in Adobe's:
// "Document management - Portable document format", 1st ed, 2008
if (decodeMap[0] === 0 && decodeMap[1] === 100 &&
decodeMap[2] === this.amin && decodeMap[3] === this.amax &&
decodeMap[4] === this.bmin && decodeMap[5] === this.bmax)
return true;
else
return false;
}
};
return LabCS;
})();

40
src/core.js
View file

@ -33,7 +33,9 @@ function getPdf(arg, callback) {
var xhr = new XMLHttpRequest();
xhr.open('GET', params.url);
xhr.mozResponseType = xhr.responseType = 'arraybuffer';
xhr.expected = (params.url.indexOf('file:') === 0) ? 0 : 200;
var protocol = params.url.indexOf(':') < 0 ? window.location.protocol :
params.url.substring(0, params.url.indexOf(':') + 1);
xhr.expected = (protocol === 'http:' || protocol === 'https:') ? 200 : 0;
if ('progress' in params)
xhr.onprogress = params.progress || undefined;
@ -193,6 +195,9 @@ var Page = (function PageClosure() {
for (i = 0; i < n; ++i)
content[i] = xref.fetchIfRef(content[i]);
content = new StreamsSequenceStream(content);
} else if (!content) {
// replacing non-existent page content with empty one
content = new Stream(new Uint8Array(0));
}
var pe = this.pe = new PartialEvaluator(
@ -409,14 +414,14 @@ var Page = (function PageClosure() {
if (callback)
callback(e);
else
throw e;
error(e);
}
}.bind(this),
function pageDisplayReadPromiseError(reason) {
if (callback)
callback(reason);
else
throw reason;
error(reason);
}
);
}
@ -619,17 +624,26 @@ var PDFDoc = (function PDFDocClosure() {
if (!globalScope.PDFJS.disableWorker && typeof Worker !== 'undefined') {
var workerSrc = PDFJS.workerSrc;
if (typeof workerSrc === 'undefined') {
throw 'No PDFJS.workerSrc specified';
error('No PDFJS.workerSrc specified');
}
try {
// Some versions of FF can't create a worker on localhost, see:
// https://bugzilla.mozilla.org/show_bug.cgi?id=683280
var worker = new Worker(workerSrc);
var worker;
if (PDFJS.isFirefoxExtension) {
// The firefox extension can't load the worker from the resource://
// url so we have to inline the script and then use the blob loader.
var bb = new MozBlobBuilder();
bb.append(document.querySelector('#PDFJS_SCRIPT_TAG').textContent);
var blobUrl = window.URL.createObjectURL(bb.getBlob());
worker = new Worker(blobUrl);
} else {
// Some versions of FF can't create a worker on localhost, see:
// https://bugzilla.mozilla.org/show_bug.cgi?id=683280
worker = new Worker(workerSrc);
}
var messageHandler = new MessageHandler('main', worker);
// Tell the worker the file it was created from.
messageHandler.send('workerSrc', workerSrc);
messageHandler.on('test', function pdfDocTest(supportTypedArray) {
if (supportTypedArray) {
this.worker = worker;
@ -645,7 +659,9 @@ var PDFDoc = (function PDFDocClosure() {
// serializing the typed array.
messageHandler.send('test', testObj);
return;
} catch (e) {}
} catch (e) {
warn('The worker has been disabled.');
}
}
// Either workers are disabled, not supported or have thrown an exception.
// Thus, we fallback to a faked worker.
@ -716,7 +732,7 @@ var PDFDoc = (function PDFDocClosure() {
});
break;
default:
throw 'Got unkown object type ' + type;
error('Got unkown object type ' + type);
}
}, this);
@ -737,7 +753,7 @@ var PDFDoc = (function PDFDocClosure() {
if (page.displayReadyPromise)
page.displayReadyPromise.reject(data.error);
else
throw data.error;
error(data.error);
}, this);
messageHandler.on('jpeg_decode', function(data, promise) {

27
src/evaluator.js
View file

@ -159,6 +159,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
// a Stream in the main thread.
if (translated.file)
translated.file = translated.file.getBytes();
if (translated.properties.file) {
translated.properties.file =
translated.properties.file.getBytes();
}
handler.send('obj', [
loadedName,
@ -292,8 +296,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
// Create an IR of the pattern code.
var depIdx = dependencyArray.length;
var queueObj = {};
var codeIR = this.getIRQueue(pattern, dict.get('Resources'),
queueObj, dependencyArray);
var codeIR = this.getIRQueue(pattern, dict.get('Resources') ||
resources, queueObj, dependencyArray);
// Add the dependencies that are required to execute the
// codeIR.
@ -336,8 +340,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
// This adds the IRQueue of the xObj to the current queue.
var depIdx = dependencyArray.length;
this.getIRQueue(xobj, xobj.dict.get('Resources'), queue,
dependencyArray);
this.getIRQueue(xobj, xobj.dict.get('Resources') || resources,
queue, dependencyArray);
// Add the dependencies that are required to execute the
// codeIR.
@ -481,8 +485,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
properties.cidToGidMap = this.readCidToGidMap(cidToGidMap);
}
var flags = properties.flags;
var differences = [];
var baseEncoding = Encodings.StandardEncoding;
var baseEncoding = !!(flags & FontFlags.Symbolic) ?
Encodings.symbolsEncoding : Encodings.StandardEncoding;
var hasEncoding = dict.has('Encoding');
if (hasEncoding) {
var encoding = xref.fetchIfRef(dict.get('Encoding'));
@ -758,10 +764,18 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
baseFontName = baseFontName.name.replace(/[,_]/g, '-');
var metrics = this.getBaseFontMetrics(baseFontName);
// Simulating descriptor flags attribute
var fontNameWoStyle = baseFontName.split('-')[0];
var flags = (serifFonts[fontNameWoStyle] ||
(fontNameWoStyle.search(/serif/gi) != -1) ? FontFlags.Serif : 0) |
(symbolsFonts[fontNameWoStyle] ? FontFlags.Symbolic :
FontFlags.Nonsymbolic);
var properties = {
type: type.name,
widths: metrics.widths,
defaultWidth: metrics.defaultWidth,
flags: flags,
firstChar: 0,
lastChar: maxCharIndex
};
@ -773,11 +787,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
properties: properties
};
}
}
// According to the spec if 'FontDescriptor' is declared, 'FirstChar',
// 'LastChar' and 'Widths' should exists too, but some PDF encoders seems
// 'LastChar' and 'Widths' should exist too, but some PDF encoders seem
// to ignore this rule when a variant of a standart font is used.
// TODO Fill the width array depending on which of the base font this is
// a variant.

155
src/fonts.js
View file

@ -19,6 +19,18 @@ var kPDFGlyphSpaceUnits = 1000;
// Until hinting is fully supported this constant can be used
var kHintingEnabled = false;
var FontFlags = {
FixedPitch: 1,
Serif: 2,
Symbolic: 4,
Script: 8,
Nonsymbolic: 32,
Italic: 64,
AllCap: 65536,
SmallCap: 131072,
ForceBold: 262144
};
var Encodings = {
get ExpertEncoding() {
return shadow(this, 'ExpertEncoding', ['', '', '', '', '', '', '', '', '',
@ -160,19 +172,20 @@ var Encodings = {
'bracketleft', 'backslash', 'bracketright', 'asciicircum', 'underscore',
'quoteleft', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l',
'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
'braceleft', 'bar', 'braceright', 'asciitilde', '', '', 'exclamdown',
'cent', 'sterling', 'fraction', 'yen', 'florin', 'section', 'currency',
'quotesingle', 'quotedblleft', 'guillemotleft', 'guilsinglleft',
'guilsinglright', 'fi', 'fl', '', 'endash', 'dagger', 'daggerdbl',
'periodcentered', '', 'paragraph', 'bullet', 'quotesinglbase',
'quotedblbase', 'quotedblright', 'guillemotright', 'ellipsis',
'perthousand', '', 'questiondown', '', 'grave', 'acute', 'circumflex',
'tilde', 'macron', 'breve', 'dotaccent', 'dieresis', '', 'ring',
'cedilla', '', 'hungarumlaut', 'ogonek', 'caron', 'emdash', '', '', '',
'', '', '', '', '', '', '', '', '', '', '', '', '', 'AE', '',
'ordfeminine', '', '', '', '', 'Lslash', 'Oslash', 'OE', 'ordmasculine',
'', '', '', '', '', 'ae', '', '', '', 'dotlessi', '', '', 'lslash',
'oslash', 'oe', 'germandbls'
'braceleft', 'bar', 'braceright', 'asciitilde', '', '', '', '', '', '',
'', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
'', '', '', '', '', '', '', '', '', '', 'exclamdown', 'cent', 'sterling',
'fraction', 'yen', 'florin', 'section', 'currency', 'quotesingle',
'quotedblleft', 'guillemotleft', 'guilsinglleft', 'guilsinglright', 'fi',
'fl', '', 'endash', 'dagger', 'daggerdbl', 'periodcentered', '',
'paragraph', 'bullet', 'quotesinglbase', 'quotedblbase', 'quotedblright',
'guillemotright', 'ellipsis', 'perthousand', '', 'questiondown', '',
'grave', 'acute', 'circumflex', 'tilde', 'macron', 'breve', 'dotaccent',
'dieresis', '', 'ring', 'cedilla', '', 'hungarumlaut', 'ogonek', 'caron',
'emdash', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
'AE', '', 'ordfeminine', '', '', '', '', 'Lslash', 'Oslash', 'OE',
'ordmasculine', '', '', '', '', '', 'ae', '', '', '', 'dotlessi', '', '',
'lslash', 'oslash', 'oe', 'germandbls'
]);
},
get WinAnsiEncoding() {
@ -339,6 +352,21 @@ var stdFontMap = {
'TimesNewRomanPSMT-Italic': 'Times-Italic'
};
/**
* Holds the map of the non-standard fonts that might be included as a standard
* fonts without glyph data.
*/
var nonStdFontMap = {
'ComicSansMS': 'Comic Sans MS',
'ComicSansMS-Bold': 'Comic Sans MS-Bold',
'ComicSansMS-BoldItalic': 'Comic Sans MS-BoldItalic',
'ComicSansMS-Italic': 'Comic Sans MS-Italic',
'LucidaConsole': 'Courier',
'LucidaConsole-Bold': 'Courier-Bold',
'LucidaConsole-BoldItalic': 'Courier-BoldOblique',
'LucidaConsole-Italic': 'Courier-Oblique'
};
var serifFonts = {
'Adobe Jenson': true, 'Adobe Text': true, 'Albertus': true,
'Aldus': true, 'Alexandria': true, 'Algerian': true,
@ -386,6 +414,23 @@ var serifFonts = {
'Wide Latin': true, 'Windsor': true, 'XITS': true
};
var symbolsFonts = {
'Dingbats': true, 'Symbol': true, 'ZapfDingbats': true
};
// Some characters, e.g. copyrightserif, mapped to the private use area and
// might not be displayed using standard fonts. Mapping/hacking well-known chars
// to the similar equivalents in the normal characters range.
function mapPrivateUseChars(code) {
switch (code) {
case 0xF8E9: // copyrightsans
case 0xF6D9: // copyrightserif
return 0x00A9; // copyright
default:
return code;
}
}
var FontLoader = {
listeningForFontLoad: false,
@ -528,7 +573,8 @@ var FontLoader = {
src += ' window.onload = function fontLoaderOnload() {\n';
src += ' parent.postMessage(JSON.stringify(fontNames), "*");\n';
src += ' }';
src += '</script></head><body>';
// Hack so the end script tag isn't counted if this is inline JS.
src += '</scr' + 'ipt></head><body>';
for (var i = 0, ii = names.length; i < ii; ++i) {
src += '<p style="font-family:\'' + names[i] + '\'">Hi</p>';
}
@ -742,7 +788,8 @@ var Font = (function FontClosure() {
var names = name.split('+');
names = names.length > 1 ? names[1] : names[0];
names = names.split(/[-,_]/g)[0];
this.serif = serifFonts[names] || (name.search(/serif/gi) != -1);
this.isSerifFont = !!(properties.flags & FontFlags.Serif);
this.isSymbolicFont = !!(properties.flags & FontFlags.Symbolic);
var type = properties.type;
this.type = type;
@ -750,7 +797,7 @@ var Font = (function FontClosure() {
// If the font is to be ignored, register it like an already loaded font
// to avoid the cost of waiting for it be be loaded by the platform.
if (properties.ignore) {
this.loadedName = this.serif ? 'serif' : 'sans-serif';
this.loadedName = this.isSerifFont ? 'serif' : 'sans-serif';
this.loading = false;
return;
}
@ -780,7 +827,7 @@ var Font = (function FontClosure() {
// The file data is not specified. Trying to fix the font name
// to be used with the canvas.font.
var fontName = name.replace(/[,_]/g, '-');
fontName = stdFontMap[fontName] || fontName;
fontName = stdFontMap[fontName] || nonStdFontMap[fontName] || fontName;
this.bold = (fontName.search(/bold/gi) != -1);
this.italic = (fontName.search(/oblique/gi) != -1) ||
@ -830,7 +877,6 @@ var Font = (function FontClosure() {
this.widthMultiplier = !properties.fontMatrix ? 1.0 :
1.0 / properties.fontMatrix[0];
this.encoding = properties.baseEncoding;
this.hasShortCmap = properties.hasShortCmap;
this.loadedName = getUniqueName();
this.loading = true;
};
@ -1800,7 +1846,32 @@ var Font = (function FontClosure() {
this.useToUnicode = true;
}
}
properties.hasShortCmap = hasShortCmap;
if (hasShortCmap && this.hasEncoding && !this.isSymbolicFont) {
// Re-encode short map encoding to unicode -- that simplifies the
// resolution of MacRoman encoded glyphs logic for TrueType fonts:
// copying all characters to private use area, all mapping all known
// glyphs to the unicodes. The glyphs and ids arrays will grow.
var usedUnicodes = [];
for (var i = 0, ii = glyphs.length; i < ii; i++) {
var code = glyphs[i].unicode;
glyphs[i].unicode += kCmapGlyphOffset;
var glyphName = properties.baseEncoding[code];
if (glyphName in GlyphsUnicode) {
var unicode = GlyphsUnicode[glyphName];
if (unicode in usedUnicodes)
continue;
usedUnicodes[unicode] = true;
glyphs.push({
unicode: unicode,
code: glyphs[i].code
});
ids.push(ids[i]);
}
}
}
// remove glyph references outside range of avaialable glyphs
for (var i = 0, ii = ids.length; i < ii; i++) {
@ -2092,10 +2163,11 @@ var Font = (function FontClosure() {
window.btoa(data) + ');');
var rule = "@font-face { font-family:'" + fontName + "';src:" + url + '}';
var styleElement = document.createElement('style');
document.documentElement.getElementsByTagName('head')[0].appendChild(
document.createElement('style'));
styleElement);
var styleSheet = document.styleSheets[document.styleSheets.length - 1];
var styleSheet = styleElement.sheet;
styleSheet.insertRule(rule, styleSheet.cssRules.length);
return rule;
@ -2141,7 +2213,7 @@ var Font = (function FontClosure() {
case 'CIDFontType0':
if (this.noUnicodeAdaptation) {
width = this.widths[this.unicodeToCID[charcode] || charcode];
unicode = charcode;
unicode = mapPrivateUseChars(charcode);
break;
}
unicode = this.toUnicode[charcode] || charcode;
@ -2149,7 +2221,7 @@ var Font = (function FontClosure() {
case 'CIDFontType2':
if (this.noUnicodeAdaptation) {
width = this.widths[this.unicodeToCID[charcode] || charcode];
unicode = charcode;
unicode = mapPrivateUseChars(charcode);
break;
}
unicode = this.toUnicode[charcode] || charcode;
@ -2159,7 +2231,7 @@ var Font = (function FontClosure() {
if (!isNum(width))
width = this.widths[glyphName];
if (this.noUnicodeAdaptation) {
unicode = GlyphsUnicode[glyphName] || charcode;
unicode = mapPrivateUseChars(GlyphsUnicode[glyphName] || charcode);
break;
}
unicode = this.glyphNameMap[glyphName] ||
@ -2184,19 +2256,14 @@ var Font = (function FontClosure() {
unicode = GlyphsUnicode[glyphName] || charcode;
break;
}
if (!this.hasEncoding) {
if (!this.hasEncoding || this.isSymbolicFont) {
unicode = this.useToUnicode ? this.toUnicode[charcode] : charcode;
break;
}
if (this.hasShortCmap && false) {
var j = Encodings.MacRomanEncoding.indexOf(glyphName);
unicode = j >= 0 ? j :
this.glyphNameMap[glyphName];
} else {
unicode = glyphName in GlyphsUnicode ?
GlyphsUnicode[glyphName] :
this.glyphNameMap[glyphName];
}
// MacRoman encoding address by re-encoding the cmap table
unicode = glyphName in this.glyphNameMap ?
this.glyphNameMap[glyphName] : GlyphsUnicode[glyphName];
break;
default:
warn('Unsupported font type: ' + this.type);
@ -2553,7 +2620,13 @@ var Type1Parser = function type1Parser() {
while (str[index++] != ']')
count++;
var array = str.substr(start, count).split(' ');
str = str.substr(start, count);
str = str.trim();
// Remove adjacent spaces
str = str.replace(/\s+/g, ' ');
var array = str.split(' ');
for (var i = 0, ii = array.length; i < ii; i++)
array[i] = parseFloat(array[i] || 0);
return array;
@ -3299,15 +3372,9 @@ var Type2CFF = (function Type2CFFClosure() {
inverseEncoding[encoding[charcode]] = charcode | 0;
for (var i = 0, ii = charsets.length; i < ii; i++) {
var glyph = charsets[i];
if (glyph == '.notdef') {
charstrings.push({
unicode: 0,
code: 0,
gid: i,
glyph: glyph
});
if (glyph == '.notdef')
continue;
}
var code = inverseEncoding[i];
if (!code || isSpecialUnicode(code)) {
unassignedUnicodeItems.push(i);
@ -3560,7 +3627,7 @@ var Type2CFF = (function Type2CFFClosure() {
dict['cidOperatorPresent'] = true;
break;
default:
TODO('interpret top dict key');
TODO('interpret top dict key: ' + key);
}
}
return dict;

156
src/function.js
View file

@ -125,109 +125,99 @@ var PDFFunction = (function PDFFunctionClosure() {
else
decode = toMultiArray(decode);
// Precalc the multipliers
var inputMul = new Float64Array(inputSize);
for (var i = 0; i < inputSize; ++i) {
inputMul[i] = (encode[i][1] - encode[i][0]) /
(domain[i][1] - domain[i][0]);
}
var idxMul = new Int32Array(inputSize);
idxMul[0] = outputSize;
for (i = 1; i < inputSize; ++i) {
idxMul[i] = idxMul[i - 1] * size[i - 1];
}
var nSamples = outputSize;
for (i = 0; i < inputSize; ++i)
nSamples *= size[i];
var samples = this.getSampleArray(size, outputSize, bps, str);
return [
CONSTRUCT_SAMPLED, inputSize, domain, encode, decode, samples, size,
outputSize, bps, range, inputMul, idxMul, nSamples
outputSize, Math.pow(2, bps) - 1, range
];
},
constructSampledFromIR: function pdfFunctionConstructSampledFromIR(IR) {
var inputSize = IR[1];
var domain = IR[2];
var encode = IR[3];
var decode = IR[4];
var samples = IR[5];
var size = IR[6];
var outputSize = IR[7];
var bps = IR[8];
var range = IR[9];
var inputMul = IR[10];
var idxMul = IR[11];
var nSamples = IR[12];
// See chapter 3, page 109 of the PDF reference
function interpolate(x, xmin, xmax, ymin, ymax) {
return ymin + ((x - xmin) * ((ymax - ymin) / (xmax - xmin)));
}
return function constructSampledFromIRResult(args) {
if (inputSize != args.length)
// See chapter 3, page 110 of the PDF reference.
var m = IR[1];
var domain = IR[2];
var encode = IR[3];
var decode = IR[4];
var samples = IR[5];
var size = IR[6];
var n = IR[7];
var mask = IR[8];
var range = IR[9];
if (m != args.length)
error('Incorrect number of arguments: ' + inputSize + ' != ' +
args.length);
// Most of the below is a port of Poppler's implementation.
// TODO: There's a few other ways to do multilinear interpolation such
// as piecewise, which is much faster but an approximation.
var out = new Float64Array(outputSize);
var x;
var e = new Array(inputSize);
var efrac0 = new Float64Array(inputSize);
var efrac1 = new Float64Array(inputSize);
var sBuf = new Float64Array(1 << inputSize);
var i, j, k, idx, t;
// map input values into sample array
for (i = 0; i < inputSize; ++i) {
x = (args[i] - domain[i][0]) * inputMul[i] + encode[i][0];
if (x < 0) {
x = 0;
} else if (x > size[i] - 1) {
x = size[i] - 1;
}
e[i] = [Math.floor(x), 0];
if ((e[i][1] = e[i][0] + 1) >= size[i]) {
// this happens if in[i] = domain[i][1]
e[i][1] = e[i][0];
}
efrac1[i] = x - e[i][0];
efrac0[i] = 1 - efrac1[i];
}
var x = args;
// for each output, do m-linear interpolation
for (i = 0; i < outputSize; ++i) {
// Building the cube vertices: its part and sample index
// http://rjwagner49.com/Mathematics/Interpolation.pdf
var cubeVertices = 1 << m;
var cubeN = new Float64Array(cubeVertices);
var cubeVertex = new Uint32Array(cubeVertices);
for (var j = 0; j < cubeVertices; j++)
cubeN[j] = 1;
// pull 2^m values out of the sample array
for (j = 0; j < (1 << inputSize); ++j) {
idx = i;
for (k = 0, t = j; k < inputSize; ++k, t >>= 1) {
idx += idxMul[k] * (e[k][t & 1]);
}
if (idx >= 0 && idx < nSamples) {
sBuf[j] = samples[idx];
var k = n, pos = 1;
// Map x_i to y_j for 0 <= i < m using the sampled function.
for (var i = 0; i < m; ++i) {
// x_i' = min(max(x_i, Domain_2i), Domain_2i+1)
var domain_2i = domain[i][0];
var domain_2i_1 = domain[i][1];
var xi = Math.min(Math.max(x[i], domain_2i), domain_2i_1);
// e_i = Interpolate(x_i', Domain_2i, Domain_2i+1,
// Encode_2i, Encode_2i+1)
var e = interpolate(xi, domain_2i, domain_2i_1,
encode[i][0], encode[i][1]);
// e_i' = min(max(e_i, 0), Size_i - 1)
var size_i = size[i];
e = Math.min(Math.max(e, 0), size_i - 1);
// Adjusting the cube: N and vertex sample index
var e0 = e < size_i - 1 ? Math.floor(e) : e - 1; // e1 = e0 + 1;
var n0 = e0 + 1 - e; // (e1 - e) / (e1 - e0);
var n1 = e - e0; // (e - e0) / (e1 - e0);
var offset0 = e0 * k;
var offset1 = offset0 + k; // e1 * k
for (var j = 0; j < cubeVertices; j++) {
if (j & pos) {
cubeN[j] *= n1;
cubeVertex[j] += offset1;
} else {
sBuf[j] = 0; // TODO Investigate if this is what Adobe does
cubeN[j] *= n0;
cubeVertex[j] += offset0;
}
}
// do m sets of interpolations
for (j = 0, t = (1 << inputSize); j < inputSize; ++j, t >>= 1) {
for (k = 0; k < t; k += 2) {
sBuf[k >> 1] = efrac0[j] * sBuf[k] + efrac1[j] * sBuf[k + 1];
}
}
// map output value to range
out[i] = (sBuf[0] * (decode[i][1] - decode[i][0]) + decode[i][0]);
if (out[i] < range[i][0]) {
out[i] = range[i][0];
} else if (out[i] > range[i][1]) {
out[i] = range[i][1];
}
k *= size_i;
pos <<= 1;
}
return out;
var y = new Float64Array(n);
for (var j = 0; j < n; ++j) {
// Sum all cube vertices' samples portions
var rj = 0;
for (var i = 0; i < cubeVertices; i++)
rj += samples[cubeVertex[i] + j] * cubeN[i];
// r_j' = Interpolate(r_j, 0, 2^BitsPerSample - 1,
// Decode_2j, Decode_2j+1)
rj = interpolate(rj, 0, 1, decode[j][0], decode[j][1]);
// y_j = min(max(r_j, range_2j), range_2j+1)
y[j] = Math.min(Math.max(rj, range[j][0]), range[j][1]);
}
return y;
}
},

1854
src/jpx.js Normal file
View file

File diff suppressed because it is too large Load diff

159
src/obj.js
View file

@ -287,74 +287,69 @@ var XRef = (function XRefClosure() {
XRef.prototype = {
readXRefTable: function readXRefTable(parser) {
// Example of cross-reference table:
// xref
// 0 1 <-- subsection header (first obj #, obj count)
// 0000000000 65535 f <-- actual object (offset, generation #, f/n)
// 23 2 <-- subsection header ... and so on ...
// 0000025518 00002 n
// 0000025635 00000 n
// trailer
// ...
// Outer loop is over subsection headers
var obj;
while (true) {
if (isCmd(obj = parser.getObj(), 'trailer'))
break;
if (!isInt(obj))
error('Invalid XRef table');
var first = obj;
if (!isInt(obj = parser.getObj()))
error('Invalid XRef table');
var n = obj;
if (first < 0 || n < 0 || (first + n) != ((first + n) | 0))
error('Invalid XRef table: ' + first + ', ' + n);
for (var i = first; i < first + n; ++i) {
while (!isCmd(obj = parser.getObj(), 'trailer')) {
var first = obj,
count = parser.getObj();
if (!isInt(first) || !isInt(count))
error('Invalid XRef table: wrong types in subsection header');
// Inner loop is over objects themselves
for (var i = 0; i < count; i++) {
var entry = {};
if (!isInt(obj = parser.getObj()))
error('Invalid XRef table: ' + first + ', ' + n);
entry.offset = obj;
if (!isInt(obj = parser.getObj()))
error('Invalid XRef table: ' + first + ', ' + n);
entry.gen = obj;
obj = parser.getObj();
if (isCmd(obj, 'n')) {
entry.uncompressed = true;
} else if (isCmd(obj, 'f')) {
entry.offset = parser.getObj();
entry.gen = parser.getObj();
var type = parser.getObj();
if (isCmd(type, 'f'))
entry.free = true;
} else {
error('Invalid XRef table: ' + first + ', ' + n);
}
if (!this.entries[i]) {
// In some buggy PDF files the xref table claims to start at 1
// instead of 0.
if (i == 1 && first == 1 &&
entry.offset == 0 && entry.gen == 65535 && entry.free) {
i = first = 0;
}
this.entries[i] = entry;
else if (isCmd(type, 'n'))
entry.uncompressed = true;
// Validate entry obj
if (!isInt(entry.offset) || !isInt(entry.gen) ||
!(entry.free || entry.uncompressed)) {
error('Invalid entry in XRef subsection: ' + first + ', ' + count);
}
if (!this.entries[i + first])
this.entries[i + first] = entry;
}
}
// read the trailer dictionary
var dict;
if (!isDict(dict = parser.getObj()))
error('Invalid XRef table');
// Sanity check: as per spec, first object must have these properties
if (this.entries[0] &&
!(this.entries[0].gen === 65535 && this.entries[0].free))
error('Invalid XRef table: unexpected first object');
// get the 'Prev' pointer
var prev;
obj = dict.get('Prev');
if (isInt(obj)) {
prev = obj;
} else if (isRef(obj)) {
// certain buggy PDF generators generate "/Prev NNN 0 R" instead
// of "/Prev NNN"
prev = obj.num;
}
if (prev) {
this.readXRef(prev);
}
// Sanity check
if (!isCmd(obj, 'trailer'))
error('Invalid XRef table: could not find trailer dictionary');
// check for 'XRefStm' key
if (isInt(obj = dict.get('XRefStm'))) {
var pos = obj;
// ignore previously loaded xref streams (possible infinite recursion)
if (!(pos in this.xrefstms)) {
this.xrefstms[pos] = 1;
this.readXRef(pos);
}
}
// Read trailer dictionary, e.g.
// trailer
// << /Size 22
// /Root 20R
// /Info 10R
// /ID [ <81b14aafa313db63dbd6f981e49f94f4> ]
// >>
// The parser goes through the entire stream << ... >> and provides
// a getter interface for the key-value table
var dict = parser.getObj();
if (!isDict(dict))
error('Invalid XRef table: could not parse trailer dictionary');
return dict;
},
@ -407,9 +402,6 @@ var XRef = (function XRefClosure() {
}
range.splice(0, 2);
}
var prev = streamParameters.get('Prev');
if (isInt(prev))
this.readXRef(prev);
return streamParameters;
},
indexObjects: function indexObjects() {
@ -529,22 +521,47 @@ var XRef = (function XRefClosure() {
try {
var parser = new Parser(new Lexer(stream), true);
var obj = parser.getObj();
var dict;
// parse an old-style xref table
if (isCmd(obj, 'xref'))
return this.readXRefTable(parser);
// Get dictionary
if (isCmd(obj, 'xref')) {
// Parse end-of-file XRef
dict = this.readXRefTable(parser);
// parse an xref stream
if (isInt(obj)) {
// Recursively get other XRefs 'XRefStm', if any
obj = dict.get('XRefStm');
if (isInt(obj)) {
var pos = obj;
// ignore previously loaded xref streams
// (possible infinite recursion)
if (!(pos in this.xrefstms)) {
this.xrefstms[pos] = 1;
this.readXRef(pos);
}
}
} else if (isInt(obj)) {
// Parse in-stream XRef
if (!isInt(parser.getObj()) ||
!isCmd(parser.getObj(), 'obj') ||
!isStream(obj = parser.getObj())) {
error('Invalid XRef stream');
}
return this.readXRefStream(obj);
dict = this.readXRefStream(obj);
}
// Recursively get previous dictionary, if any
obj = dict.get('Prev');
if (isInt(obj))
this.readXRef(obj);
else if (isRef(obj)) {
// The spec says Prev must not be a reference, i.e. "/Prev NNN"
// This is a fallback for non-compliant PDFs, i.e. "/Prev NNN 0 R"
this.readXRef(obj.num);
}
return dict;
} catch (e) {
log('Reading of the xref table/stream failed: ' + e);
log('(while reading XRef): ' + e);
}
warn('Indexing all PDF objects');
@ -574,7 +591,7 @@ var XRef = (function XRefClosure() {
var stream, parser;
if (e.uncompressed) {
if (e.gen != gen)
throw ('inconsistent generation in XRef');
error('inconsistent generation in XRef');
stream = this.stream.makeSubStream(e.offset);
parser = new Parser(new Lexer(stream), true, this);
var obj1 = parser.getObj();
@ -703,7 +720,7 @@ var PDFObjects = (function PDFObjectsClosure() {
// If there isn't an object yet or the object isn't resolved, then the
// data isn't ready yet!
if (!obj || !obj.isResolved) {
throw 'Requesting object that isn\'t resolved yet ' + objId;
error('Requesting object that isn\'t resolved yet ' + objId);
return null;
} else {
return obj.data;

7
src/parser.js
View file

@ -240,6 +240,10 @@ var Parser = (function ParserClosure() {
var bytes = stream.getBytes(length);
return new JpegStream(bytes, stream.dict, this.xref);
}
if (name == 'JPXDecode' || name == 'JPX') {
var bytes = stream.getBytes(length);
return new JpxStream(bytes, stream.dict);
}
if (name == 'ASCII85Decode' || name == 'A85') {
return new Ascii85Stream(stream);
}
@ -249,6 +253,9 @@ var Parser = (function ParserClosure() {
if (name == 'CCITTFaxDecode' || name == 'CCF') {
return new CCITTFaxStream(stream, params);
}
if (name == 'RunLengthDecode') {
return new RunLengthStream(stream);
}
warn('filter "' + name + '" not supported yet');
return stream;
}

12
src/pattern.js
View file

@ -94,9 +94,9 @@ Shadings.RadialAxial = (function RadialAxialClosure() {
var colorStops = [];
for (var i = t0; i <= t1; i += step) {
var color = fn([i]);
var rgbColor = Util.makeCssRgb.apply(this, cs.getRgb(color));
colorStops.push([(i - t0) / diff, rgbColor]);
var rgbColor = cs.getRgb(fn([i]));
var cssColor = Util.makeCssRgb(rgbColor[0], rgbColor[1], rgbColor[2]);
colorStops.push([(i - t0) / diff, cssColor]);
}
this.colorStops = colorStops;
@ -234,9 +234,9 @@ var TilingPattern = (function TilingPatternClosure() {
tmpCtx.strokeStyle = ctx.strokeStyle;
break;
case PaintType.UNCOLORED:
color = Util.makeCssRgb.apply(this, color);
tmpCtx.fillStyle = color;
tmpCtx.strokeStyle = color;
var cssColor = Util.makeCssRgb(this, color[0], color[1], color[2]);
tmpCtx.fillStyle = cssColor;
tmpCtx.strokeStyle = cssColor;
break;
default:
error('Unsupported paint type: ' + paintType);

170
src/stream.js
View file

@ -821,21 +821,25 @@ var JpegStream = (function JpegStreamClosure() {
JpegStream.prototype.ensureBuffer = function jpegStreamEnsureBuffer(req) {
if (this.bufferLength)
return;
var jpegImage = new JpegImage();
if (this.colorTransform != -1)
jpegImage.colorTransform = this.colorTransform;
jpegImage.parse(this.bytes);
var width = jpegImage.width;
var height = jpegImage.height;
var data = jpegImage.getData(width, height);
this.buffer = data;
this.bufferLength = data.length;
try {
var jpegImage = new JpegImage();
if (this.colorTransform != -1)
jpegImage.colorTransform = this.colorTransform;
jpegImage.parse(this.bytes);
var width = jpegImage.width;
var height = jpegImage.height;
var data = jpegImage.getData(width, height);
this.buffer = data;
this.bufferLength = data.length;
} catch (e) {
error('JPEG error: ' + e);
}
};
JpegStream.prototype.getIR = function jpegStreamGetIR() {
return bytesToString(this.bytes);
};
JpegStream.prototype.getChar = function jpegStreamGetChar() {
error('internal error: getChar is not valid on JpegStream');
error('internal error: getChar is not valid on JpegStream');
};
/**
* Checks if the image can be decoded and displayed by the browser without any
@ -869,6 +873,107 @@ var JpegStream = (function JpegStreamClosure() {
return JpegStream;
})();
/**
* For JPEG 2000's we use a library to decode these images and
* the stream behaves like all the other DecodeStreams.
*/
var JpxStream = (function JpxStreamClosure() {
function JpxStream(bytes, dict) {
this.dict = dict;
this.bytes = bytes;
DecodeStream.call(this);
}
JpxStream.prototype = Object.create(DecodeStream.prototype);
JpxStream.prototype.ensureBuffer = function jpxStreamEnsureBuffer(req) {
if (this.bufferLength)
return;
var jpxImage = new JpxImage();
jpxImage.parse(this.bytes);
var width = jpxImage.width;
var height = jpxImage.height;
var componentsCount = jpxImage.componentsCount;
if (componentsCount != 1 && componentsCount != 3 && componentsCount != 4)
error('JPX with ' + componentsCount + ' components is not supported');
var data = new Uint8Array(width * height * componentsCount);
for (var k = 0, kk = jpxImage.tiles.length; k < kk; k++) {
var tileCompoments = jpxImage.tiles[k];
var tileWidth = tileCompoments[0].width;
var tileHeight = tileCompoments[0].height;
var tileLeft = tileCompoments[0].left;
var tileTop = tileCompoments[0].top;
var dataPosition, sourcePosition, data0, data1, data2, data3, rowFeed;
switch (componentsCount) {
case 1:
data0 = tileCompoments[0].items;
dataPosition = width * tileTop + tileLeft;
rowFeed = width - tileWidth;
sourcePosition = 0;
for (var j = 0; j < tileHeight; j++) {
for (var i = 0; i < tileWidth; i++)
data[dataPosition++] = data0[sourcePosition++];
dataPosition += rowFeed;
}
break;
case 3:
data0 = tileCompoments[0].items;
data1 = tileCompoments[1].items;
data2 = tileCompoments[2].items;
dataPosition = (width * tileTop + tileLeft) * 3;
rowFeed = (width - tileWidth) * 3;
sourcePosition = 0;
for (var j = 0; j < tileHeight; j++) {
for (var i = 0; i < tileWidth; i++) {
data[dataPosition++] = data0[sourcePosition];
data[dataPosition++] = data1[sourcePosition];
data[dataPosition++] = data2[sourcePosition];
sourcePosition++;
}
dataPosition += rowFeed;
}
break;
case 4:
data0 = tileCompoments[0].items;
data1 = tileCompoments[1].items;
data2 = tileCompoments[2].items;
data3 = tileCompoments[3].items;
dataPosition = (width * tileTop + tileLeft) * 4;
rowFeed = (width - tileWidth) * 4;
sourcePosition = 0;
for (var j = 0; j < tileHeight; j++) {
for (var i = 0; i < tileWidth; i++) {
data[dataPosition++] = data0[sourcePosition];
data[dataPosition++] = data1[sourcePosition];
data[dataPosition++] = data2[sourcePosition];
data[dataPosition++] = data3[sourcePosition];
sourcePosition++;
}
dataPosition += rowFeed;
}
break;
}
}
this.buffer = data;
this.bufferLength = data.length;
};
JpxStream.prototype.getChar = function jpxStreamGetChar() {
error('internal error: getChar is not valid on JpxStream');
};
return JpxStream;
})();
var DecryptStream = (function DecryptStreamClosure() {
function DecryptStream(str, decrypt) {
this.str = str;
@ -1041,6 +1146,51 @@ var AsciiHexStream = (function AsciiHexStreamClosure() {
return AsciiHexStream;
})();
var RunLengthStream = (function RunLengthStreamClosure() {
function RunLengthStream(str) {
this.str = str;
this.dict = str.dict;
DecodeStream.call(this);
}
RunLengthStream.prototype = Object.create(DecodeStream.prototype);
RunLengthStream.prototype.readBlock = function runLengthStreamReadBlock() {
// The repeatHeader has following format. The first byte defines type of run
// and amount of bytes to repeat/copy: n = 0 through 127 - copy next n bytes
// (in addition to the second byte from the header), n = 129 through 255 -
// duplicate the second byte from the header (257 - n) times, n = 128 - end.
var repeatHeader = this.str.getBytes(2);
if (!repeatHeader || repeatHeader.length < 2 || repeatHeader[0] == 128) {
this.eof = true;
return;
}
var bufferLength = this.bufferLength;
var n = repeatHeader[0];
if (n < 128) {
// copy n bytes
var buffer = this.ensureBuffer(bufferLength + n + 1);
buffer[bufferLength++] = repeatHeader[1];
if (n > 0) {
var source = this.str.getBytes(n);
buffer.set(source, bufferLength);
bufferLength += n;
}
} else {
n = 257 - n;
var b = repeatHeader[1];
var buffer = this.ensureBuffer(bufferLength + n + 1);
for (var i = 0; i < n; i++)
buffer[bufferLength++] = b;
}
this.bufferLength = bufferLength;
};
return RunLengthStream;
})();
var CCITTFaxStream = (function CCITTFaxStreamClosure() {
var ccittEOL = -2;

38
src/util.js
View file

@ -78,21 +78,43 @@ var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
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 + ')';
};
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 + ')';
};
// For 2d affine transforms
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];
};
// Apply a generic 3d matrix M on a 3-vector v:
// | a b c | | X |
// | d e f | x | Y |
// | g h i | | Z |
// M is assumed to be serialized as [a,b,c,d,e,f,g,h,i],
// with v as [X,Y,Z]
Util.apply3dTransform = function apply3d(m, v) {
return [
m[0] * v[0] + m[1] * v[1] + m[2] * v[2],
m[3] * v[0] + m[4] * v[1] + m[5] * v[2],
m[6] * v[0] + m[7] * v[1] + m[8] * v[2]
];
}
Util.sign = function sign(num) {
return num < 0 ? -1 : 1;
};
return Util;
})();
@ -255,8 +277,8 @@ var Promise = (function PromiseClosure() {
return;
}
if (this._data !== EMPTY_PROMISE) {
throw 'Promise ' + this.name +
': Cannot set the data of a promise twice';
error('Promise ' + this.name +
': Cannot set the data of a promise twice');
}
this._data = value;
this.hasData = true;
@ -268,7 +290,7 @@ var Promise = (function PromiseClosure() {
get data() {
if (this._data === EMPTY_PROMISE) {
throw 'Promise ' + this.name + ': Cannot get data that isn\'t set';
error('Promise ' + this.name + ': Cannot get data that isn\'t set');
}
return this._data;
},
@ -283,10 +305,10 @@ var Promise = (function PromiseClosure() {
resolve: function promiseResolve(data) {
if (this.isResolved) {
throw 'A Promise can be resolved only once ' + this.name;
error('A Promise can be resolved only once ' + this.name);
}
if (this.isRejected) {
throw 'The Promise was already rejected ' + this.name;
error('The Promise was already rejected ' + this.name);
}
this.isResolved = true;
@ -300,10 +322,10 @@ var Promise = (function PromiseClosure() {
reject: function proimseReject(reason) {
if (this.isRejected) {
throw 'A Promise can be rejected only once ' + this.name;
error('A Promise can be rejected only once ' + this.name);
}
if (this.isResolved) {
throw 'The Promise was already resolved ' + this.name;
error('The Promise was already resolved ' + this.name);
}
this.isRejected = true;
@ -317,7 +339,7 @@ var Promise = (function PromiseClosure() {
then: function promiseThen(callback, errback) {
if (!callback) {
throw 'Requiring callback' + this.name;
error('Requiring callback' + this.name);
}
// If the promise is already resolved, call the callback directly.

40
src/worker.js
View file

@ -26,7 +26,7 @@ function MessageHandler(name, comObj) {
delete callbacks[callbackId];
callback(data.data);
} else {
throw 'Cannot resolve callback ' + callbackId;
error('Cannot resolve callback ' + callbackId);
}
} else if (data.action in ah) {
var action = ah[data.action];
@ -44,7 +44,7 @@ function MessageHandler(name, comObj) {
action[0].call(action[1], data.data);
}
} else {
throw 'Unkown action from worker: ' + data.action;
error('Unkown action from worker: ' + data.action);
}
};
}
@ -53,7 +53,7 @@ MessageHandler.prototype = {
on: function messageHandlerOn(actionName, handler, scope) {
var ah = this.actionHandler;
if (ah[actionName]) {
throw 'There is already an actionName called "' + actionName + '"';
error('There is already an actionName called "' + actionName + '"');
}
ah[actionName] = [handler, scope];
},
@ -85,13 +85,6 @@ var WorkerMessageHandler = {
handler.send('test', data instanceof Uint8Array);
});
handler.on('workerSrc', function wphSetupWorkerSrc(data) {
// In development, the `workerSrc` message is handled in the
// `worker_loader.js` file. In production the workerProcessHandler is
// called for this. This servers as a dummy to prevent calling an
// undefined action `workerSrc`.
});
handler.on('doc', function wphSetupDoc(data) {
// Create only the model of the PDFDoc, which is enough for
// processing the content of the pdf.
@ -116,11 +109,27 @@ var WorkerMessageHandler = {
// Pre compile the pdf page and fetch the fonts/images.
IRQueue = page.getIRQueue(handler, dependency);
} catch (e) {
var minimumStackMessage =
'worker.js: while trying to getPage() and getIRQueue()';
// Turn the error into an obj that can be serialized
e = {
message: typeof e === 'object' ? e.message : e,
stack: typeof e === 'object' ? e.stack : null
};
if (typeof e === 'string') {
e = {
message: e,
stack: minimumStackMessage
};
} else if (typeof e === 'object') {
e = {
message: e.message || e.toString(),
stack: e.stack || minimumStackMessage
};
} else {
e = {
message: 'Unknown exception type: ' + (typeof e),
stack: minimumStackMessage
};
}
handler.send('page_error', {
pageNum: pageNum,
error: e
@ -215,6 +224,7 @@ var workerConsole = {
action: 'console_error',
data: args
});
throw 'pdf.js execution error';
},
time: function time(name) {
@ -224,7 +234,7 @@ var workerConsole = {
timeEnd: function timeEnd(name) {
var time = consoleTimer[name];
if (time == null) {
throw 'Unkown timer name ' + name;
error('Unkown timer name ' + name);
}
this.log('Timer:', name, Date.now() - time);
}

72
src/worker_loader.js
View file

@ -3,51 +3,31 @@
'use strict';
function onMessageLoader(evt) {
// Reset the `onmessage` function as it was only set to call
// this function the first time a message is passed to the worker
// but shouldn't get called anytime afterwards.
this.onmessage = null;
// List of files to include;
var files = [
'core.js',
'util.js',
'canvas.js',
'obj.js',
'function.js',
'charsets.js',
'cidmaps.js',
'colorspace.js',
'crypto.js',
'evaluator.js',
'fonts.js',
'glyphlist.js',
'image.js',
'metrics.js',
'parser.js',
'pattern.js',
'stream.js',
'worker.js',
'../external/jpgjs/jpg.js',
'jpx.js'
];
if (evt.data.action !== 'workerSrc') {
throw 'Worker expects first message to be `workerSrc`';
}
// Content of `PDFJS.workerSrc` as defined on the main thread.
var workerSrc = evt.data.data;
// Extract the directory that contains the source files to load.
// Assuming the source files have the same relative possition as the
// `workerSrc` file.
var dir = workerSrc.substring(0, workerSrc.lastIndexOf('/') + 1);
// List of files to include;
var files = [
'core.js',
'util.js',
'canvas.js',
'obj.js',
'function.js',
'charsets.js',
'cidmaps.js',
'colorspace.js',
'crypto.js',
'evaluator.js',
'fonts.js',
'glyphlist.js',
'image.js',
'metrics.js',
'parser.js',
'pattern.js',
'stream.js',
'worker.js',
'../external/jpgjs/jpg.js'
];
// Load all the files.
for (var i = 0; i < files.length; i++) {
importScripts(dir + files[i]);
}
// Load all the files.
for (var i = 0; i < files.length; i++) {
importScripts(files[i]);
}
this.onmessage = onMessageLoader;