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Merge upstream.

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This commit is contained in:
Brendan Dahl 2011-12-29 12:37:15 -08:00
commit 7c8445753d
19 changed files with 567 additions and 99 deletions
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3
src/canvas.js
View file

@ -672,6 +672,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
ctx.translate(current.x, current.y);
ctx.scale(textHScale, 1);
ctx.lineWidth /= current.textMatrix[0];
if (textSelection) {
this.save();
@ -708,6 +709,8 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
} else {
ctx.save();
this.applyTextTransforms();
ctx.lineWidth /= current.textMatrix[0] * fontMatrix[0];
if (textSelection)
text.geom = this.getTextGeometry();

8
src/colorspace.js
View file

@ -225,7 +225,7 @@ var AlternateCS = (function AlternateCSClosure() {
return base.getRgbBuffer(baseBuf, 8);
},
isDefaultDecode: function altcs_isDefaultDecode(decodeMap) {
ColorSpace.isDefaultDecode(decodeMap, this.numComps);
return ColorSpace.isDefaultDecode(decodeMap, this.numComps);
}
};
@ -327,7 +327,7 @@ var DeviceGrayCS = (function DeviceGrayCSClosure() {
return rgbBuf;
},
isDefaultDecode: function graycs_isDefaultDecode(decodeMap) {
ColorSpace.isDefaultDecode(decodeMap, this.numComps);
return ColorSpace.isDefaultDecode(decodeMap, this.numComps);
}
};
return DeviceGrayCS;
@ -354,7 +354,7 @@ var DeviceRgbCS = (function DeviceRgbCSClosure() {
return rgbBuf;
},
isDefaultDecode: function rgbcs_isDefaultDecode(decodeMap) {
ColorSpace.isDefaultDecode(decodeMap, this.numComps);
return ColorSpace.isDefaultDecode(decodeMap, this.numComps);
}
};
return DeviceRgbCS;
@ -441,7 +441,7 @@ var DeviceCmykCS = (function DeviceCmykCSClosure() {
return rgbBuf;
},
isDefaultDecode: function cmykcs_isDefaultDecode(decodeMap) {
ColorSpace.isDefaultDecode(decodeMap, this.numComps);
return ColorSpace.isDefaultDecode(decodeMap, this.numComps);
}
};

179
src/core.js
View file

@ -274,46 +274,125 @@ var Page = (function PageClosure() {
}
},
getLinks: function pageGetLinks() {
var links = [];
var annotations = pageGetAnnotations();
var i, n = annotations.length;
for (i = 0; i < n; ++i) {
if (annotations[i].type != 'Link')
continue;
links.push(annotations[i]);
}
return links;
},
getAnnotations: function pageGetAnnotations() {
var xref = this.xref;
function getInheritableProperty(annotation, name) {
var item = annotation;
while (item && !item.has(name)) {
item = xref.fetchIfRef(item.get('Parent'));
}
if (!item)
return null;
return item.get(name);
}
var annotations = xref.fetchIfRef(this.annotations) || [];
var i, n = annotations.length;
var links = [];
var items = [];
for (i = 0; i < n; ++i) {
var annotation = xref.fetch(annotations[i]);
var annotationRef = annotations[i];
var annotation = xref.fetch(annotationRef);
if (!isDict(annotation))
continue;
var subtype = annotation.get('Subtype');
if (!isName(subtype) || subtype.name != 'Link')
if (!isName(subtype))
continue;
var rect = annotation.get('Rect');
var topLeftCorner = this.rotatePoint(rect[0], rect[1]);
var bottomRightCorner = this.rotatePoint(rect[2], rect[3]);
var link = {};
link.x = Math.min(topLeftCorner.x, bottomRightCorner.x);
link.y = Math.min(topLeftCorner.y, bottomRightCorner.y);
link.width = Math.abs(topLeftCorner.x - bottomRightCorner.x);
link.height = Math.abs(topLeftCorner.y - bottomRightCorner.y);
var a = this.xref.fetchIfRef(annotation.get('A'));
if (a) {
switch (a.get('S').name) {
case 'URI':
link.url = a.get('URI');
var item = {};
item.type = subtype.name;
item.x = Math.min(topLeftCorner.x, bottomRightCorner.x);
item.y = Math.min(topLeftCorner.y, bottomRightCorner.y);
item.width = Math.abs(topLeftCorner.x - bottomRightCorner.x);
item.height = Math.abs(topLeftCorner.y - bottomRightCorner.y);
switch (subtype.name) {
case 'Link':
var a = this.xref.fetchIfRef(annotation.get('A'));
if (a) {
switch (a.get('S').name) {
case 'URI':
item.url = a.get('URI');
break;
case 'GoTo':
item.dest = a.get('D');
break;
default:
TODO('other link types');
}
} else if (annotation.has('Dest')) {
// simple destination link
var dest = annotation.get('Dest');
item.dest = isName(dest) ? dest.name : dest;
}
break;
case 'Widget':
var fieldType = getInheritableProperty(annotation, 'FT');
if (!isName(fieldType))
break;
case 'GoTo':
link.dest = a.get('D');
break;
default:
TODO('other link types');
}
} else if (annotation.has('Dest')) {
// simple destination link
var dest = annotation.get('Dest');
link.dest = isName(dest) ? dest.name : dest;
item.fieldType = fieldType.name;
// Building the full field name by collecting the field and
// its ancestors 'T' properties and joining them using '.'.
var fieldName = [];
var namedItem = annotation, ref = annotationRef;
while (namedItem) {
var parentRef = namedItem.get('Parent');
var parent = xref.fetchIfRef(parentRef);
var name = namedItem.get('T');
if (name)
fieldName.unshift(stringToPDFString(name));
else {
// The field name is absent, that means more than one field
// with the same name may exist. Replacing the empty name
// with the '`' plus index in the parent's 'Kids' array.
// This is not in the PDF spec but necessary to id the
// the input controls.
var kids = xref.fetchIfRef(parent.get('Kids'));
var j, jj;
for (j = 0, jj = kids.length; j < jj; j++) {
if (kids[j].num == ref.num && kids[j].gen == ref.gen)
break;
}
fieldName.unshift('`' + j);
}
namedItem = parent;
ref = parentRef;
}
item.fullName = fieldName.join('.');
var alternativeText = stringToPDFString(annotation.get('TU') || '');
item.alternativeText = alternativeText;
var da = getInheritableProperty(annotation, 'DA') || '';
var m = /([\d\.]+)\sTf/.exec(da);
if (m)
item.fontSize = parseFloat(m[1]);
item.textAlignment = getInheritableProperty(annotation, 'Q');
item.flags = getInheritableProperty(annotation, 'Ff') || 0;
break;
case 'Text':
var content = annotation.get('Contents');
var title = annotation.get('T');
item.content = stringToPDFString(content || '');
item.title = stringToPDFString(title || '');
item.name = annotation.get('Name').name;
break;
default:
TODO('unimplemented annotation type: ' + subtype.name);
break;
}
links.push(link);
items.push(item);
}
return links;
return items;
},
startRendering: function pageStartRendering(ctx, callback, textLayer) {
this.ctx = ctx;
@ -352,6 +431,7 @@ var PDFDocModel = (function PDFDocModelClosure() {
assertWellFormed(stream.length > 0, 'stream must have data');
this.stream = stream;
this.setup();
this.acroForm = this.xref.fetchIfRef(this.catalog.catDict.get('AcroForm'));
}
function find(stream, needle, limit, backwards) {
@ -499,36 +579,35 @@ var PDFDoc = (function PDFDocClosure() {
throw 'No PDFJS.workerSrc specified';
}
var worker;
try {
worker = new Worker(workerSrc);
} catch (e) {
// Some versions of FF can't create a worker on localhost, see:
// https://bugzilla.mozilla.org/show_bug.cgi?id=683280
globalScope.PDFJS.disableWorker = true;
this.setupFakeWorker();
var 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;
this.setupMessageHandler(messageHandler);
} else {
globalScope.PDFJS.disableWorker = true;
this.setupFakeWorker();
}
}.bind(this));
var testObj = new Uint8Array(1);
// Some versions of Opera throw a DATA_CLONE_ERR on
// serializing the typed array.
messageHandler.send('test', testObj);
return;
}
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;
this.setupMessageHandler(messageHandler);
} else {
this.setupFakeWorker();
}
}.bind(this));
var testObj = new Uint8Array(1);
messageHandler.send('test', testObj);
} else {
this.setupFakeWorker();
} catch (e) {}
}
// Either workers are disabled, not supported or have thrown an exception.
// Thus, we fallback to a faked worker.
globalScope.PDFJS.disableWorker = true;
this.setupFakeWorker();
}
PDFDoc.prototype = {

10
src/evaluator.js
View file

@ -221,13 +221,15 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
fn = 'paintImageXObject';
PDFImage.buildImage(function(imageObj) {
var drawWidth = imageObj.drawWidth;
var drawHeight = imageObj.drawHeight;
var imgData = {
width: w,
height: h,
data: new Uint8Array(w * h * 4)
width: drawWidth,
height: drawHeight,
data: new Uint8Array(drawWidth * drawHeight * 4)
};
var pixels = imgData.data;
imageObj.fillRgbaBuffer(pixels);
imageObj.fillRgbaBuffer(pixels, drawWidth, drawHeight);
handler.send('obj', [objId, 'Image', imgData]);
}, handler, xref, resources, image, inline);
}

86
src/image.js
View file

@ -127,7 +127,56 @@ var PDFImage = (function PDFImageClosure() {
smaskPromise.resolve(null);
};
/**
* Resize an image using the nearest neighbor algorithm. Currently only
* supports one and three component images.
* @param {TypedArray} pixels The original image with one component.
* @param {Number} bpc Number of bits per component.
* @param {Number} components Number of color components, 1 or 3 is supported.
* @param {Number} w1 Original width.
* @param {Number} h1 Original height.
* @param {Number} w2 New width.
* @param {Number} h2 New height.
* @return {TypedArray} Resized image data.
*/
PDFImage.resize = function resize(pixels, bpc, components, w1, h1, w2, h2) {
var length = w2 * h2 * components;
var temp = bpc <= 8 ? new Uint8Array(length) :
bpc <= 16 ? new Uint16Array(length) : new Uint32Array(length);
var xRatio = w1 / w2;
var yRatio = h1 / h2;
var px, py, newIndex, oldIndex;
for (var i = 0; i < h2; i++) {
for (var j = 0; j < w2; j++) {
px = Math.floor(j * xRatio);
py = Math.floor(i * yRatio);
newIndex = (i * w2) + j;
oldIndex = ((py * w1) + px);
if (components === 1) {
temp[newIndex] = pixels[oldIndex];
} else if (components === 3) {
newIndex *= 3;
oldIndex *= 3;
temp[newIndex] = pixels[oldIndex];
temp[newIndex + 1] = pixels[oldIndex + 1];
temp[newIndex + 2] = pixels[oldIndex + 2];
}
}
}
return temp;
};
PDFImage.prototype = {
get drawWidth() {
if (!this.smask)
return this.width;
return Math.max(this.width, this.smask.width);
},
get drawHeight() {
if (!this.smask)
return this.height;
return Math.max(this.height, this.smask.height);
},
getComponents: function getComponents(buffer) {
var bpc = this.bpc;
var needsDecode = this.needsDecode;
@ -216,22 +265,21 @@ var PDFImage = (function PDFImageClosure() {
}
return output;
},
getOpacity: function getOpacity() {
getOpacity: function getOpacity(width, height) {
var smask = this.smask;
var width = this.width;
var height = this.height;
var buf = new Uint8Array(width * height);
var originalWidth = this.width;
var originalHeight = this.height;
var buf;
if (smask) {
var sw = smask.width;
var sh = smask.height;
if (sw != this.width || sh != this.height)
error('smask dimensions do not match image dimensions: ' + sw +
' != ' + this.width + ', ' + sh + ' != ' + this.height);
buf = new Uint8Array(sw * sh);
smask.fillGrayBuffer(buf);
return buf;
if (sw != width || sh != height)
buf = PDFImage.resize(buf, smask.bps, 1, sw, sh, width, height);
} else {
buf = new Uint8Array(width * height);
for (var i = 0, ii = width * height; i < ii; ++i)
buf[i] = 255;
}
@ -260,20 +308,23 @@ var PDFImage = (function PDFImageClosure() {
}
}
},
fillRgbaBuffer: function fillRgbaBuffer(buffer) {
fillRgbaBuffer: function fillRgbaBuffer(buffer, width, height) {
var numComps = this.numComps;
var width = this.width;
var height = this.height;
var originalWidth = this.width;
var originalHeight = this.height;
var bpc = this.bpc;
// rows start at byte boundary;
var rowBytes = (width * numComps * bpc + 7) >> 3;
var imgArray = this.getImageBytes(height * rowBytes);
var rowBytes = (originalWidth * numComps * bpc + 7) >> 3;
var imgArray = this.getImageBytes(originalHeight * rowBytes);
var comps = this.colorSpace.getRgbBuffer(
this.getComponents(imgArray), bpc);
if (originalWidth != width || originalHeight != height)
comps = PDFImage.resize(comps, this.bpc, 3, originalWidth,
originalHeight, width, height);
var compsPos = 0;
var opacity = this.getOpacity();
var opacity = this.getOpacity(width, height);
var opacityPos = 0;
var length = width * height * 4;
@ -299,9 +350,10 @@ var PDFImage = (function PDFImageClosure() {
var comps = this.getComponents(imgArray);
var length = width * height;
// we aren't using a colorspace so we need to scale the value
var scale = 255 / ((1 << bpc) - 1);
for (var i = 0; i < length; ++i)
buffer[i] = comps[i];
buffer[i] = (scale * comps[i]) | 0;
},
getImageBytes: function getImageBytes(length) {
this.image.reset();

11
src/obj.js
View file

@ -22,6 +22,17 @@ var Cmd = (function CmdClosure() {
Cmd.prototype = {
};
var cmdCache = {};
Cmd.get = function cmdGet(cmd) {
var cmdValue = cmdCache[cmd];
if (cmdValue)
return cmdValue;
return cmdCache[cmd] = new Cmd(cmd);
};
return Cmd;
})();

12
src/parser.js
View file

@ -157,7 +157,7 @@ var Parser = (function ParserClosure() {
imageStream = this.filter(imageStream, dict, length);
imageStream.parameters = dict;
this.buf2 = new Cmd('EI');
this.buf2 = Cmd.get('EI');
this.shift();
return imageStream;
@ -496,14 +496,14 @@ var Lexer = (function LexerClosure() {
// array punctuation
case '[':
case ']':
return new Cmd(ch);
return Cmd.get(ch);
// hex string or dict punctuation
case '<':
ch = stream.lookChar();
if (ch == '<') {
// dict punctuation
stream.skip();
return new Cmd('<<');
return Cmd.get('<<');
}
return this.getHexString(ch);
// dict punctuation
@ -511,11 +511,11 @@ var Lexer = (function LexerClosure() {
ch = stream.lookChar();
if (ch == '>') {
stream.skip();
return new Cmd('>>');
return Cmd.get('>>');
}
case '{':
case '}':
return new Cmd(ch);
return Cmd.get(ch);
// fall through
case ')':
error('Illegal character: ' + ch);
@ -538,7 +538,7 @@ var Lexer = (function LexerClosure() {
return false;
if (str == 'null')
return null;
return new Cmd(str);
return Cmd.get(str);
},
skipToNextLine: function lexerSkipToNextLine() {
var stream = this.stream;