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Making src/core/evaluator.js adhere to the style guide

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This commit is contained in:
Tim van der Meij 2014-03-22 19:15:51 +01:00
parent 026d58e9a4
commit c6a06c0f16
1 changed files with 435 additions and 432 deletions
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291
src/core/evaluator.js
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@ -103,18 +103,18 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var groupSubtype = group.get('S'); var groupSubtype = group.get('S');
if (isName(groupSubtype) && groupSubtype.name === 'Transparency') { if (isName(groupSubtype) && groupSubtype.name === 'Transparency') {
groupOptions.isolated = group.get('I') || false; groupOptions.isolated = (group.get('I') || false);
groupOptions.knockout = group.get('K') || false; groupOptions.knockout = (group.get('K') || false);
var colorSpace = group.get('CS'); var colorSpace = group.get('CS');
groupOptions.colorSpace = colorSpace ? groupOptions.colorSpace = (colorSpace ?
ColorSpace.parseToIR(colorSpace, this.xref, resources) : null; ColorSpace.parseToIR(colorSpace, this.xref, resources) : null);
} }
operatorList.addOp(OPS.beginGroup, [groupOptions]); operatorList.addOp(OPS.beginGroup, [groupOptions]);
} }
operatorList.addOp(OPS.paintFormXObjectBegin, [matrix, bbox]); operatorList.addOp(OPS.paintFormXObjectBegin, [matrix, bbox]);
this.getOperatorList(xobj, xobj.dict.get('Resources') || resources, this.getOperatorList(xobj, (xobj.dict.get('Resources') || resources),
operatorList, state); operatorList, state);
operatorList.addOp(OPS.paintFormXObjectEnd, []); operatorList.addOp(OPS.paintFormXObjectEnd, []);
@ -123,8 +123,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
} }
}, },
buildPaintImageXObject: function PartialEvaluator_buildPaintImageXObject( buildPaintImageXObject:
resources, image, inline, operatorList, function PartialEvaluator_buildPaintImageXObject(resources, image,
inline, operatorList,
cacheKey, cache) { cacheKey, cache) {
var self = this; var self = this;
var dict = image.dict; var dict = image.dict;
@ -136,9 +137,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
return; return;
} }
var imageMask = dict.get('ImageMask', 'IM') || false; var imageMask = (dict.get('ImageMask', 'IM') || false);
if (imageMask) { if (imageMask) {
// This depends on a tmpCanvas beeing filled with the // This depends on a tmpCanvas being filled with the
// current fillStyle, such that processing the pixel // current fillStyle, such that processing the pixel
// data can't be done here. Instead of creating a // data can't be done here. Instead of creating a
// complete PDFImage, only read the information needed // complete PDFImage, only read the information needed
@ -150,7 +151,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var imgArray = image.getBytes(bitStrideLength * height); var imgArray = image.getBytes(bitStrideLength * height);
var decode = dict.get('Decode', 'D'); var decode = dict.get('Decode', 'D');
var canTransfer = image instanceof DecodeStream; var canTransfer = image instanceof DecodeStream;
var inverseDecode = !!decode && decode[0] > 0; var inverseDecode = (!!decode && decode[0] > 0);
var imgData = PDFImage.createMask(imgArray, width, height, var imgData = PDFImage.createMask(imgArray, width, height,
canTransfer, inverseDecode); canTransfer, inverseDecode);
@ -165,13 +166,12 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
return; return;
} }
var softMask = dict.get('SMask', 'SM') || false; var softMask = (dict.get('SMask', 'SM') || false);
var mask = dict.get('Mask') || false; var mask = (dict.get('Mask') || false);
var SMALL_IMAGE_DIMENSIONS = 200; var SMALL_IMAGE_DIMENSIONS = 200;
// Inlining small images into the queue as RGB data // Inlining small images into the queue as RGB data
if (inline && !softMask && !mask && if (inline && !softMask && !mask && !(image instanceof JpegStream) &&
!(image instanceof JpegStream) &&
(w + h) < SMALL_IMAGE_DIMENSIONS) { (w + h) < SMALL_IMAGE_DIMENSIONS) {
var imageObj = new PDFImage(this.xref, resources, image, var imageObj = new PDFImage(this.xref, resources, image,
inline, null, null); inline, null, null);
@ -184,7 +184,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
// If there is no imageMask, create the PDFImage and a lot // If there is no imageMask, create the PDFImage and a lot
// of image processing can be done here. // of image processing can be done here.
var uniquePrefix = this.uniquePrefix || ''; var uniquePrefix = (this.uniquePrefix || '');
var objId = 'img_' + uniquePrefix + (++this.idCounters.obj); var objId = 'img_' + uniquePrefix + (++this.idCounters.obj);
operatorList.addDependency(objId); operatorList.addDependency(objId);
var args = [objId, w, h]; var args = [objId, w, h];
@ -193,17 +193,17 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
image.isNativelySupported(this.xref, resources)) { image.isNativelySupported(this.xref, resources)) {
// These JPEGs don't need any more processing so we can just send it. // These JPEGs don't need any more processing so we can just send it.
operatorList.addOp(OPS.paintJpegXObject, args); operatorList.addOp(OPS.paintJpegXObject, args);
this.handler.send( this.handler.send('obj',
'obj', [objId, this.pageIndex, 'JpegStream', image.getIR()]); [objId, this.pageIndex, 'JpegStream', image.getIR()]);
return; return;
} }
PDFImage.buildImage(function(imageObj) { PDFImage.buildImage(function(imageObj) {
var imgData = imageObj.createImageData(/* forceRGBA = */ false); var imgData = imageObj.createImageData(/* forceRGBA = */ false);
self.handler.send('obj', [objId, self.pageIndex, 'Image', imgData], self.handler.send('obj', [objId, self.pageIndex, 'Image', imgData],
null, [imgData.data.buffer]); null, [imgData.data.buffer]);
}, self.handler, self.xref, resources, image, inline); }, self.handler, self.xref, resources, image, inline);
operatorList.addOp(OPS.paintImageXObject, args); operatorList.addOp(OPS.paintImageXObject, args);
if (cacheKey) { if (cacheKey) {
cache.key = cacheKey; cache.key = cacheKey;
@ -224,12 +224,13 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
operatorList); operatorList);
}, },
handleTilingType: function PartialEvaluator_handleTilingType( handleTilingType:
fn, args, resources, pattern, patternDict, function PartialEvaluator_handleTilingType(fn, args, resources,
pattern, patternDict,
operatorList) { operatorList) {
// Create an IR of the pattern code. // Create an IR of the pattern code.
var tilingOpList = this.getOperatorList(pattern, var tilingOpList = this.getOperatorList(pattern,
patternDict.get('Resources') || resources); (patternDict.get('Resources') || resources));
// Add the dependencies to the parent operator list so they are resolved // Add the dependencies to the parent operator list so they are resolved
// before sub operator list is executed synchronously. // before sub operator list is executed synchronously.
operatorList.addDependencies(tilingOpList.dependencies); operatorList.addDependencies(tilingOpList.dependencies);
@ -239,9 +240,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
}, patternDict, args)); }, patternDict, args));
}, },
handleSetFont: function PartialEvaluator_handleSetFont( handleSetFont:
resources, fontArgs, fontRef, operatorList) { function PartialEvaluator_handleSetFont(resources, fontArgs, fontRef,
operatorList) {
// TODO(mack): Not needed? // TODO(mack): Not needed?
var fontName; var fontName;
if (fontArgs) { if (fontArgs) {
@ -404,7 +405,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
if (!isDict(font)) { if (!isDict(font)) {
return errorFont(); return errorFont();
} }
// Workaround for bad PDF generators that doesn't reference fonts // Workaround for bad PDF generators that don't reference fonts
// properly, i.e. by not using an object identifier. // properly, i.e. by not using an object identifier.
// Check if the fontRef is a Dict (as opposed to a standard object), // Check if the fontRef is a Dict (as opposed to a standard object),
// in which case we don't cache the font and instead reference it by // in which case we don't cache the font and instead reference it by
@ -414,8 +415,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
this.fontCache.put(fontRef, font); this.fontCache.put(fontRef, font);
} }
// keep track of each font we translated so the caller can // Keep track of each font we translated so the caller can
// load them asynchronously before calling display on a page // load them asynchronously before calling display on a page.
font.loadedName = 'g_font_' + (fontRefIsDict ? font.loadedName = 'g_font_' + (fontRefIsDict ?
fontName.replace(/\W/g, '') : (fontRef.num + '_' + fontRef.gen)); fontName.replace(/\W/g, '') : (fontRef.num + '_' + fontRef.gen));
@ -432,7 +433,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
if (font.translated.loadCharProcs) { if (font.translated.loadCharProcs) {
var charProcs = font.get('CharProcs').getAll(); var charProcs = font.get('CharProcs').getAll();
var fontResources = font.get('Resources') || resources; var fontResources = (font.get('Resources') || resources);
var charProcKeys = Object.keys(charProcs); var charProcKeys = Object.keys(charProcs);
var charProcOperatorList = {}; var charProcOperatorList = {};
for (var i = 0, n = charProcKeys.length; i < n; ++i) { for (var i = 0, n = charProcKeys.length; i < n; ++i) {
@ -448,10 +449,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
parentOperatorList.addDependencies(charProcOperatorList.dependencies); parentOperatorList.addDependencies(charProcOperatorList.dependencies);
} }
font.translated.charProcOperatorList = charProcOperatorList; font.translated.charProcOperatorList = charProcOperatorList;
font.loaded = true;
} else {
font.loaded = true;
} }
font.loaded = true;
return font; return font;
}, },
@ -465,11 +464,11 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var handler = this.handler; var handler = this.handler;
var imageCache = {}; var imageCache = {};
operatorList = operatorList || new OperatorList(); operatorList = (operatorList || new OperatorList());
resources = resources || new Dict(); resources = (resources || new Dict());
var xobjs = resources.get('XObject') || new Dict(); var xobjs = (resources.get('XObject') || new Dict());
var patterns = resources.get('Pattern') || new Dict(); var patterns = (resources.get('Pattern') || new Dict());
var preprocessor = new EvaluatorPreprocessor(stream, xref); var preprocessor = new EvaluatorPreprocessor(stream, xref);
if (evaluatorState) { if (evaluatorState) {
preprocessor.setState(evaluatorState); preprocessor.setState(evaluatorState);
@ -493,8 +492,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var pattern; var pattern;
if (isName(patternName) && if (isName(patternName) &&
(pattern = patterns.get(patternName.name))) { (pattern = patterns.get(patternName.name))) {
var dict = (isStream(pattern) ? pattern.dict : pattern);
var dict = isStream(pattern) ? pattern.dict : pattern;
var typeNum = dict.get('PatternType'); var typeNum = dict.get('PatternType');
if (typeNum == TILING_PATTERN) { if (typeNum == TILING_PATTERN) {
@ -527,14 +525,11 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var xobj = xobjs.get(name); var xobj = xobjs.get(name);
if (xobj) { if (xobj) {
assertWellFormed( assertWellFormed(isStream(xobj), 'XObject should be a stream');
isStream(xobj), 'XObject should be a stream');
var type = xobj.dict.get('Subtype'); var type = xobj.dict.get('Subtype');
assertWellFormed( assertWellFormed(isName(type),
isName(type), 'XObject should have a Name subtype');
'XObject should have a Name subtype'
);
if ('Form' == type.name) { if ('Form' == type.name) {
self.buildFormXObject(resources, xobj, null, operatorList, self.buildFormXObject(resources, xobj, null, operatorList,
@ -608,15 +603,17 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
break; break;
case OPS.shadingFill: case OPS.shadingFill:
var shadingRes = resources.get('Shading'); var shadingRes = resources.get('Shading');
if (!shadingRes) if (!shadingRes) {
error('No shading resource found'); error('No shading resource found');
}
var shading = shadingRes.get(args[0].name); var shading = shadingRes.get(args[0].name);
if (!shading) if (!shading) {
error('No shading object found'); error('No shading object found');
}
var shadingFill = Pattern.parseShading( var shadingFill = Pattern.parseShading(shading, null, xref,
shading, null, xref, resources); resources);
var patternIR = shadingFill.getIR(); var patternIR = shadingFill.getIR();
args = [patternIR]; args = [patternIR];
fn = OPS.shadingFill; fn = OPS.shadingFill;
@ -625,20 +622,20 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var dictName = args[0]; var dictName = args[0];
var extGState = resources.get('ExtGState'); var extGState = resources.get('ExtGState');
if (!isDict(extGState) || !extGState.has(dictName.name)) if (!isDict(extGState) || !extGState.has(dictName.name)) {
break; break;
}
var gState = extGState.get(dictName.name); var gState = extGState.get(dictName.name);
self.setGState(resources, gState, operatorList, xref); self.setGState(resources, gState, operatorList, xref);
args = []; args = [];
continue; continue;
} // switch }
operatorList.addOp(fn, args); operatorList.addOp(fn, args);
} }
// some pdf don't close all restores inside object/form // Some PDFs don't close all restores inside object/form.
// closing those for them // Closing those for them.
for (var i = 0, ii = preprocessor.savedStatesDepth; i < ii; i++) { for (var i = 0, ii = preprocessor.savedStatesDepth; i < ii; i++) {
operatorList.addOp(OPS.restore, []); operatorList.addOp(OPS.restore, []);
} }
@ -646,10 +643,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
return operatorList; return operatorList;
}, },
getTextContent: function PartialEvaluator_getTextContent( getTextContent: function PartialEvaluator_getTextContent(stream, resources,
stream, resources, textState) { textState) {
textState = textState || new TextState(); textState = (textState || new TextState());
var bidiTexts = []; var bidiTexts = [];
var SPACE_FACTOR = 0.35; var SPACE_FACTOR = 0.35;
@ -662,7 +659,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
return self.loadFont(fontName, fontRef, xref, resources, null); return self.loadFont(fontName, fontRef, xref, resources, null);
} }
resources = xref.fetchIfRef(resources) || new Dict(); resources = (xref.fetchIfRef(resources) || new Dict());
// The xobj is parsed iff it's needed, e.g. if there is a `DO` cmd. // The xobj is parsed iff it's needed, e.g. if there is a `DO` cmd.
var xobjs = null; var xobjs = null;
var xobjsCache = {}; var xobjsCache = {};
@ -756,7 +753,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
} }
if (!xobjs) { if (!xobjs) {
xobjs = resources.get('XObject') || new Dict(); xobjs = (resources.get('XObject') || new Dict());
} }
var name = args[0].name; var name = args[0].name;
@ -768,15 +765,14 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
} }
var xobj = xobjs.get(name); var xobj = xobjs.get(name);
if (!xobj) if (!xobj) {
break; break;
}
assertWellFormed(isStream(xobj), 'XObject should be a stream'); assertWellFormed(isStream(xobj), 'XObject should be a stream');
var type = xobj.dict.get('Subtype'); var type = xobj.dict.get('Subtype');
assertWellFormed( assertWellFormed(isName(type),
isName(type), 'XObject should have a Name subtype');
'XObject should have a Name subtype'
);
if ('Form' !== type.name) { if ('Form' !== type.name) {
xobjsCache.key = name; xobjsCache.key = name;
@ -784,11 +780,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
break; break;
} }
var formTexts = this.getTextContent( var formTexts = this.getTextContent(xobj,
xobj, (xobj.dict.get('Resources') || resources), textState);
xobj.dict.get('Resources') || resources,
textState
);
xobjsCache.key = name; xobjsCache.key = name;
xobjsCache.texts = formTexts; xobjsCache.texts = formTexts;
Util.concatenateToArray(bidiTexts, formTexts); Util.concatenateToArray(bidiTexts, formTexts);
@ -797,8 +790,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var dictName = args[0]; var dictName = args[0];
var extGState = resources.get('ExtGState'); var extGState = resources.get('ExtGState');
if (!isDict(extGState) || !extGState.has(dictName.name)) if (!isDict(extGState) || !extGState.has(dictName.name)) {
break; break;
}
var gsState = extGState.get(dictName.name); var gsState = extGState.get(dictName.name);
@ -808,15 +802,15 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
} }
} }
break; break;
} // switch }
if (chunkBuf.length > 0) { if (chunkBuf.length > 0) {
var chunk = chunkBuf.join(''); var chunk = chunkBuf.join('');
var bidiText = PDFJS.bidi(chunk, -1, font.vertical); var bidiText = PDFJS.bidi(chunk, -1, font.vertical);
var renderParams = textState.calcRenderParams(preprocessor.ctm); var renderParams = textState.calcRenderParams(preprocessor.ctm);
var fontHeight = textState.fontSize * renderParams.vScale; var fontHeight = textState.fontSize * renderParams.vScale;
var fontAscent = font.ascent ? font.ascent * fontHeight : var fontAscent = (font.ascent ? (font.ascent * fontHeight) :
font.descent ? (1 + font.descent) * fontHeight : fontHeight; (font.descent ? ((1 + font.descent) * fontHeight) : fontHeight));
bidiText.x = renderParams.renderMatrix[4] - (fontAscent * bidiText.x = renderParams.renderMatrix[4] - (fontAscent *
Math.sin(renderParams.angle)); Math.sin(renderParams.angle));
bidiText.y = renderParams.renderMatrix[5] + (fontAscent * bidiText.y = renderParams.renderMatrix[5] + (fontAscent *
@ -831,7 +825,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
chunkBuf.length = 0; chunkBuf.length = 0;
} }
} // while }
return bidiTexts; return bidiTexts;
}, },
@ -840,11 +834,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
partialEvaluatorExtractDataStructures(dict, baseDict, partialEvaluatorExtractDataStructures(dict, baseDict,
xref, properties) { xref, properties) {
// 9.10.2 // 9.10.2
var toUnicode = dict.get('ToUnicode') || var toUnicode = (dict.get('ToUnicode') || baseDict.get('ToUnicode'));
baseDict.get('ToUnicode'); if (toUnicode) {
if (toUnicode)
properties.toUnicode = this.readToUnicode(toUnicode, xref, properties); properties.toUnicode = this.readToUnicode(toUnicode, xref, properties);
}
if (properties.composite) { if (properties.composite) {
// CIDSystemInfo helps to match CID to glyphs // CIDSystemInfo helps to match CID to glyphs
var cidSystemInfo = dict.get('CIDSystemInfo'); var cidSystemInfo = dict.get('CIDSystemInfo');
@ -857,9 +850,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
} }
var cidToGidMap = dict.get('CIDToGIDMap'); var cidToGidMap = dict.get('CIDToGIDMap');
if (isStream(cidToGidMap)) if (isStream(cidToGidMap)) {
properties.cidToGidMap = this.readCidToGidMap(cidToGidMap); properties.cidToGidMap = this.readCidToGidMap(cidToGidMap);
} }
}
// Based on 9.6.6 of the spec the encoding can come from multiple places // Based on 9.6.6 of the spec the encoding can come from multiple places
// and depends on the font type. The base encoding and differences are // and depends on the font type. The base encoding and differences are
@ -873,20 +867,21 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var encoding = dict.get('Encoding'); var encoding = dict.get('Encoding');
if (isDict(encoding)) { if (isDict(encoding)) {
baseEncodingName = encoding.get('BaseEncoding'); baseEncodingName = encoding.get('BaseEncoding');
baseEncodingName = isName(baseEncodingName) ? baseEncodingName.name : baseEncodingName = (isName(baseEncodingName) ?
null; baseEncodingName.name : null);
// Load the differences between the base and original // Load the differences between the base and original
if (encoding.has('Differences')) { if (encoding.has('Differences')) {
var diffEncoding = encoding.get('Differences'); var diffEncoding = encoding.get('Differences');
var index = 0; var index = 0;
for (var j = 0, jj = diffEncoding.length; j < jj; j++) { for (var j = 0, jj = diffEncoding.length; j < jj; j++) {
var data = diffEncoding[j]; var data = diffEncoding[j];
if (isNum(data)) if (isNum(data)) {
index = data; index = data;
else } else {
differences[index++] = data.name; differences[index++] = data.name;
} }
} }
}
} else if (isName(encoding)) { } else if (isName(encoding)) {
baseEncodingName = encoding.name; baseEncodingName = encoding.name;
} else { } else {
@ -904,14 +899,15 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
if (baseEncodingName) { if (baseEncodingName) {
properties.defaultEncoding = Encodings[baseEncodingName].slice(); properties.defaultEncoding = Encodings[baseEncodingName].slice();
} else { } else {
var encoding = properties.type === 'TrueType' ? var encoding = (properties.type === 'TrueType' ?
Encodings.WinAnsiEncoding : Encodings.WinAnsiEncoding :
Encodings.StandardEncoding; Encodings.StandardEncoding);
// The Symbolic attribute can be misused for regular fonts // The Symbolic attribute can be misused for regular fonts
// Heuristic: we have to check if the font is a standard one also // Heuristic: we have to check if the font is a standard one also
if (!!(properties.flags & FontFlags.Symbolic)) { if (!!(properties.flags & FontFlags.Symbolic)) {
encoding = !properties.file && /Symbol/i.test(properties.name) ? encoding = (!properties.file && /Symbol/i.test(properties.name) ?
Encodings.SymbolSetEncoding : Encodings.MacRomanEncoding; Encodings.SymbolSetEncoding :
Encodings.MacRomanEncoding);
} }
properties.defaultEncoding = encoding; properties.defaultEncoding = encoding;
} }
@ -949,6 +945,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
} }
return null; return null;
}, },
readCidToGidMap: function PartialEvaluator_readCidToGidMap(cidToGidStream) { readCidToGidMap: function PartialEvaluator_readCidToGidMap(cidToGidStream) {
// Extract the encoding from the CIDToGIDMap // Extract the encoding from the CIDToGIDMap
var glyphsData = cidToGidStream.getBytes(); var glyphsData = cidToGidStream.getBytes();
@ -957,17 +954,16 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var result = []; var result = [];
for (var j = 0, jj = glyphsData.length; j < jj; j++) { for (var j = 0, jj = glyphsData.length; j < jj; j++) {
var glyphID = (glyphsData[j++] << 8) | glyphsData[j]; var glyphID = (glyphsData[j++] << 8) | glyphsData[j];
if (glyphID === 0) if (glyphID === 0) {
continue; continue;
}
var code = j >> 1; var code = j >> 1;
result[code] = glyphID; result[code] = glyphID;
} }
return result; return result;
}, },
extractWidths: function PartialEvaluator_extractWidths(dict, extractWidths: function PartialEvaluator_extractWidths(dict, xref,
xref,
descriptor, descriptor,
properties) { properties) {
var glyphsWidths = []; var glyphsWidths = [];
@ -983,18 +979,20 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var start = widths[i++]; var start = widths[i++];
var code = xref.fetchIfRef(widths[i]); var code = xref.fetchIfRef(widths[i]);
if (isArray(code)) { if (isArray(code)) {
for (var j = 0, jj = code.length; j < jj; j++) for (var j = 0, jj = code.length; j < jj; j++) {
glyphsWidths[start++] = code[j]; glyphsWidths[start++] = code[j];
}
} else { } else {
var width = widths[++i]; var width = widths[++i];
for (var j = start; j <= code; j++) for (var j = start; j <= code; j++) {
glyphsWidths[j] = width; glyphsWidths[j] = width;
} }
} }
} }
}
if (properties.vertical) { if (properties.vertical) {
var vmetrics = dict.get('DW2') || [880, -1000]; var vmetrics = (dict.get('DW2') || [880, -1000]);
defaultVMetrics = [vmetrics[1], defaultWidth * 0.5, vmetrics[0]]; defaultVMetrics = [vmetrics[1], defaultWidth * 0.5, vmetrics[0]];
vmetrics = dict.get('W2'); vmetrics = dict.get('W2');
if (vmetrics) { if (vmetrics) {
@ -1002,24 +1000,27 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var start = vmetrics[i++]; var start = vmetrics[i++];
var code = xref.fetchIfRef(vmetrics[i]); var code = xref.fetchIfRef(vmetrics[i]);
if (isArray(code)) { if (isArray(code)) {
for (var j = 0, jj = code.length; j < jj; j++) for (var j = 0, jj = code.length; j < jj; j++) {
glyphsVMetrics[start++] = [code[j++], code[j++], code[j]]; glyphsVMetrics[start++] = [code[j++], code[j++], code[j]];
}
} else { } else {
var vmetric = [vmetrics[++i], vmetrics[++i], vmetrics[++i]]; var vmetric = [vmetrics[++i], vmetrics[++i], vmetrics[++i]];
for (var j = start; j <= code; j++) for (var j = start; j <= code; j++) {
glyphsVMetrics[j] = vmetric; glyphsVMetrics[j] = vmetric;
} }
} }
} }
} }
}
} else { } else {
var firstChar = properties.firstChar; var firstChar = properties.firstChar;
var widths = dict.get('Widths'); var widths = dict.get('Widths');
if (widths) { if (widths) {
var j = firstChar; var j = firstChar;
for (var i = 0, ii = widths.length; i < ii; i++) for (var i = 0, ii = widths.length; i < ii; i++) {
glyphsWidths[j++] = widths[i]; glyphsWidths[j++] = widths[i];
defaultWidth = parseFloat(descriptor.get('MissingWidth')) || 0; }
defaultWidth = (parseFloat(descriptor.get('MissingWidth')) || 0);
} else { } else {
// Trying get the BaseFont metrics (see comment above). // Trying get the BaseFont metrics (see comment above).
var baseFontName = dict.get('BaseFont'); var baseFontName = dict.get('BaseFont');
@ -1034,11 +1035,13 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
} }
// Heuristic: detection of monospace font by checking all non-zero widths // Heuristic: detection of monospace font by checking all non-zero widths
var isMonospace = true, firstWidth = defaultWidth; var isMonospace = true;
var firstWidth = defaultWidth;
for (var glyph in glyphsWidths) { for (var glyph in glyphsWidths) {
var glyphWidth = glyphsWidths[glyph]; var glyphWidth = glyphsWidths[glyph];
if (!glyphWidth) if (!glyphWidth) {
continue; continue;
}
if (!firstWidth) { if (!firstWidth) {
firstWidth = glyphWidth; firstWidth = glyphWidth;
continue; continue;
@ -1048,8 +1051,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
break; break;
} }
} }
if (isMonospace) if (isMonospace) {
properties.flags |= FontFlags.FixedPitch; properties.flags |= FontFlags.FixedPitch;
}
properties.defaultWidth = defaultWidth; properties.defaultWidth = defaultWidth;
properties.widths = glyphsWidths; properties.widths = glyphsWidths;
@ -1058,7 +1062,6 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
}, },
isSerifFont: function PartialEvaluator_isSerifFont(baseFontName) { isSerifFont: function PartialEvaluator_isSerifFont(baseFontName) {
// Simulating descriptor flags attribute // Simulating descriptor flags attribute
var fontNameWoStyle = baseFontName.split('-')[0]; var fontNameWoStyle = baseFontName.split('-')[0];
return (fontNameWoStyle in serifFonts) || return (fontNameWoStyle in serifFonts) ||
@ -1066,9 +1069,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
}, },
getBaseFontMetrics: function PartialEvaluator_getBaseFontMetrics(name) { getBaseFontMetrics: function PartialEvaluator_getBaseFontMetrics(name) {
var defaultWidth = 0, widths = [], monospace = false; var defaultWidth = 0;
var widths = [];
var lookupName = stdFontMap[name] || name; var monospace = false;
var lookupName = (stdFontMap[name] || name);
if (!(lookupName in Metrics)) { if (!(lookupName in Metrics)) {
// Use default fonts for looking up font metrics if the passed // Use default fonts for looking up font metrics if the passed
@ -1095,8 +1099,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
}; };
}, },
buildCharCodeToWidth: function PartialEvaluator_bulildCharCodeToWidth( buildCharCodeToWidth:
widthsByGlyphName, properties) { function PartialEvaluator_bulildCharCodeToWidth(widthsByGlyphName,
properties) {
var widths = Object.create(null); var widths = Object.create(null);
var differences = properties.differences; var differences = properties.differences;
var encoding = properties.defaultEncoding; var encoding = properties.defaultEncoding;
@ -1114,8 +1119,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
return widths; return widths;
}, },
translateFont: function PartialEvaluator_translateFont(dict, translateFont: function PartialEvaluator_translateFont(dict, xref) {
xref) {
var baseDict = dict; var baseDict = dict;
var type = dict.get('Subtype'); var type = dict.get('Subtype');
assertWellFormed(isName(type), 'invalid font Subtype'); assertWellFormed(isName(type), 'invalid font Subtype');
@ -1127,16 +1131,16 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
// - set the type according to the descendant font // - set the type according to the descendant font
// - get the FontDescriptor from the descendant font // - get the FontDescriptor from the descendant font
var df = dict.get('DescendantFonts'); var df = dict.get('DescendantFonts');
if (!df) if (!df) {
error('Descendant fonts are not specified'); error('Descendant fonts are not specified');
}
dict = isArray(df) ? xref.fetchIfRef(df[0]) : df; dict = (isArray(df) ? xref.fetchIfRef(df[0]) : df);
type = dict.get('Subtype'); type = dict.get('Subtype');
assertWellFormed(isName(type), 'invalid font Subtype'); assertWellFormed(isName(type), 'invalid font Subtype');
composite = true; composite = true;
} }
var maxCharIndex = composite ? 0xFFFF : 0xFF; var maxCharIndex = (composite ? 0xFFFF : 0xFF);
var descriptor = dict.get('FontDescriptor'); var descriptor = dict.get('FontDescriptor');
if (!descriptor) { if (!descriptor) {
@ -1150,8 +1154,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
// FontDescriptor was not required. // FontDescriptor was not required.
// This case is here for compatibility. // This case is here for compatibility.
var baseFontName = dict.get('BaseFont'); var baseFontName = dict.get('BaseFont');
if (!isName(baseFontName)) if (!isName(baseFontName)) {
error('Base font is not specified'); error('Base font is not specified');
}
// Using base font name as a font name. // Using base font name as a font name.
baseFontName = baseFontName.name.replace(/[,_]/g, '-'); baseFontName = baseFontName.name.replace(/[,_]/g, '-');
@ -1159,8 +1164,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
// Simulating descriptor flags attribute // Simulating descriptor flags attribute
var fontNameWoStyle = baseFontName.split('-')[0]; var fontNameWoStyle = baseFontName.split('-')[0];
var flags = ( var flags =
this.isSerifFont(fontNameWoStyle) ? FontFlags.Serif : 0) | (this.isSerifFont(fontNameWoStyle) ? FontFlags.Serif : 0) |
(metrics.monospace ? FontFlags.FixedPitch : 0) | (metrics.monospace ? FontFlags.FixedPitch : 0) |
(symbolsFonts[fontNameWoStyle] ? FontFlags.Symbolic : (symbolsFonts[fontNameWoStyle] ? FontFlags.Symbolic :
FontFlags.Nonsymbolic); FontFlags.Nonsymbolic);
@ -1177,7 +1182,6 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
this.extractDataStructures(dict, dict, xref, properties); this.extractDataStructures(dict, dict, xref, properties);
properties.widths = this.buildCharCodeToWidth(metrics.widths, properties.widths = this.buildCharCodeToWidth(metrics.widths,
properties); properties);
return new Font(baseFontName, null, properties); return new Font(baseFontName, null, properties);
} }
} }
@ -1187,12 +1191,12 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
// to ignore this rule when a variant of a standart font is used. // 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 // TODO Fill the width array depending on which of the base font this is
// a variant. // a variant.
var firstChar = dict.get('FirstChar') || 0; var firstChar = (dict.get('FirstChar') || 0);
var lastChar = dict.get('LastChar') || maxCharIndex; var lastChar = (dict.get('LastChar') || maxCharIndex);
var fontName = descriptor.get('FontName'); var fontName = descriptor.get('FontName');
var baseFont = dict.get('BaseFont'); var baseFont = dict.get('BaseFont');
// Some bad pdf's have a string as the font name. // Some bad PDFs have a string as the font name.
if (isString(fontName)) { if (isString(fontName)) {
fontName = Name.get(fontName); fontName = Name.get(fontName);
} }
@ -1209,7 +1213,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
baseFontStr + '"'); baseFontStr + '"');
} }
} }
fontName = fontName || baseFont; fontName = (fontName || baseFont);
assertWellFormed(isName(fontName), 'invalid font name'); assertWellFormed(isName(fontName), 'invalid font name');
@ -1217,11 +1221,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
if (fontFile) { if (fontFile) {
if (fontFile.dict) { if (fontFile.dict) {
var subtype = fontFile.dict.get('Subtype'); var subtype = fontFile.dict.get('Subtype');
if (subtype) if (subtype) {
subtype = subtype.name; subtype = subtype.name;
}
var length1 = fontFile.dict.get('Length1'); var length1 = fontFile.dict.get('Length1');
var length2 = fontFile.dict.get('Length2'); var length2 = fontFile.dict.get('Length2');
} }
} }
@ -1237,9 +1240,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
composite: composite, composite: composite,
wideChars: composite, wideChars: composite,
fixedPitch: false, fixedPitch: false,
fontMatrix: dict.get('FontMatrix') || FONT_IDENTITY_MATRIX, fontMatrix: (dict.get('FontMatrix') || FONT_IDENTITY_MATRIX),
firstChar: firstChar || 0, firstChar: firstChar || 0,
lastChar: lastChar || maxCharIndex, lastChar: (lastChar || maxCharIndex),
bbox: descriptor.get('FontBBox'), bbox: descriptor.get('FontBBox'),
ascent: descriptor.get('Ascent'), ascent: descriptor.get('Ascent'),
descent: descriptor.get('Descent'), descent: descriptor.get('Descent'),
@ -1305,7 +1308,6 @@ var OperatorList = (function OperatorListClosure() {
} }
OperatorList.prototype = { OperatorList.prototype = {
get length() { get length() {
return this.argsArray.length; return this.argsArray.length;
}, },
@ -1385,6 +1387,7 @@ var TextState = (function TextStateClosure() {
this.textHScale = 1; this.textHScale = 1;
this.textRise = 0; this.textRise = 0;
} }
TextState.prototype = { TextState.prototype = {
initialiseTextObj: function TextState_initialiseTextObj() { initialiseTextObj: function TextState_initialiseTextObj() {
var m = this.textMatrix; var m = this.textMatrix;
@ -1564,10 +1567,12 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessor() {
this.ctm = new Float32Array([1, 0, 0, 1, 0, 0]); this.ctm = new Float32Array([1, 0, 0, 1, 0, 0]);
this.savedStates = []; this.savedStates = [];
} }
EvaluatorPreprocessor.prototype = { EvaluatorPreprocessor.prototype = {
get savedStatesDepth() { get savedStatesDepth() {
return this.savedStates.length; return this.savedStates.length;
}, },
read: function EvaluatorPreprocessor_read() { read: function EvaluatorPreprocessor_read() {
var args = []; var args = [];
while (true) { while (true) {
@ -1578,7 +1583,7 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessor() {
if (!isCmd(obj)) { if (!isCmd(obj)) {
// argument // argument
if (obj !== null && obj !== undefined) { if (obj !== null && obj !== undefined) {
args.push(obj instanceof Dict ? obj.getAll() : obj); args.push((obj instanceof Dict ? obj.getAll() : obj));
assertWellFormed(args.length <= 33, 'Too many arguments'); assertWellFormed(args.length <= 33, 'Too many arguments');
} }
continue; continue;
@ -1616,22 +1621,24 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessor() {
} }
// TODO figure out how to type-check vararg functions // TODO figure out how to type-check vararg functions
this.preprocessCommand(fn, args); this.preprocessCommand(fn, args);
return { fn: fn, args: args }; return { fn: fn, args: args };
} }
}, },
getState: function EvaluatorPreprocessor_getState() { getState: function EvaluatorPreprocessor_getState() {
return { return {
ctm: this.ctm ctm: this.ctm
}; };
}, },
setState: function EvaluatorPreprocessor_setState(state) { setState: function EvaluatorPreprocessor_setState(state) {
this.ctm = state.ctm; this.ctm = state.ctm;
}, },
preprocessCommand: function EvaluatorPreprocessor_preprocessCommand(fn,
args) { preprocessCommand:
function EvaluatorPreprocessor_preprocessCommand(fn, args) {
switch (fn | 0) { switch (fn | 0) {
case OPS.save: case OPS.save:
this.savedStates.push(this.getState()); this.savedStates.push(this.getState());
@ -1664,13 +1671,13 @@ var QueueOptimizer = (function QueueOptimizerClosure() {
var state = parentState; var state = parentState;
for (var i = 0, ii = pattern.length - 1; i < ii; i++) { for (var i = 0, ii = pattern.length - 1; i < ii; i++) {
var item = pattern[i]; var item = pattern[i];
state = state[item] || (state[item] = []); state = (state[item] || (state[item] = []));
} }
state[pattern[pattern.length - 1]] = fn; state[pattern[pattern.length - 1]] = fn;
} }
function handlePaintSolidColorImageMask(index, count, fnArray, argsArray) { function handlePaintSolidColorImageMask(index, count, fnArray, argsArray) {
// Handles special case of mainly latex documents which // Handles special case of mainly LaTeX documents which
// use image masks to draw lines with the current fill style. // use image masks to draw lines with the current fill style.
// 'count' groups of (save, transform, paintImageMaskXObject, restore)+ // 'count' groups of (save, transform, paintImageMaskXObject, restore)+
// have been found at index. // have been found at index.
@ -1704,8 +1711,7 @@ var QueueOptimizer = (function QueueOptimizerClosure() {
var j = context.currentOperation - 3, i = j + 4; var j = context.currentOperation - 3, i = j + 4;
var ii = fnArray.length; var ii = fnArray.length;
for (; i < ii && fnArray[i - 4] === fnArray[i]; i++) { for (; i < ii && fnArray[i - 4] === fnArray[i]; i++) {}
}
var count = Math.min((i - j) >> 2, MAX_IMAGES_IN_INLINE_IMAGES_BLOCK); var count = Math.min((i - j) >> 2, MAX_IMAGES_IN_INLINE_IMAGES_BLOCK);
if (count < MIN_IMAGES_IN_INLINE_IMAGES_BLOCK) { if (count < MIN_IMAGES_IN_INLINE_IMAGES_BLOCK) {
context.currentOperation = i - 1; context.currentOperation = i - 1;
@ -1744,16 +1750,13 @@ var QueueOptimizer = (function QueueOptimizerClosure() {
var rowSize = map[q].w << 2; var rowSize = map[q].w << 2;
var dataOffset = 0; var dataOffset = 0;
var offset = (map[q].x + map[q].y * imgWidth) << 2; var offset = (map[q].x + map[q].y * imgWidth) << 2;
imgData.set( imgData.set(data.subarray(0, rowSize), offset - imgRowSize);
data.subarray(0, rowSize), offset - imgRowSize);
for (var k = 0, kk = map[q].h; k < kk; k++) { for (var k = 0, kk = map[q].h; k < kk; k++) {
imgData.set( imgData.set(data.subarray(dataOffset, dataOffset + rowSize), offset);
data.subarray(dataOffset, dataOffset + rowSize), offset);
dataOffset += rowSize; dataOffset += rowSize;
offset += imgRowSize; offset += imgRowSize;
} }
imgData.set( imgData.set(data.subarray(dataOffset - rowSize, dataOffset), offset);
data.subarray(dataOffset - rowSize, dataOffset), offset);
while (offset >= 0) { while (offset >= 0) {
data[offset - 4] = data[offset]; data[offset - 4] = data[offset];
data[offset - 3] = data[offset + 1]; data[offset - 3] = data[offset + 1];
@ -1787,8 +1790,7 @@ var QueueOptimizer = (function QueueOptimizerClosure() {
var j = context.currentOperation - 3, i = j + 4; var j = context.currentOperation - 3, i = j + 4;
var ii = fnArray.length; var ii = fnArray.length;
for (; i < ii && fnArray[i - 4] === fnArray[i]; i++) { for (; i < ii && fnArray[i - 4] === fnArray[i]; i++) {}
}
var count = (i - j) >> 2; var count = (i - j) >> 2;
count = handlePaintSolidColorImageMask(j, count, fnArray, argsArray); count = handlePaintSolidColorImageMask(j, count, fnArray, argsArray);
if (count < MIN_IMAGES_IN_MASKS_BLOCK) { if (count < MIN_IMAGES_IN_MASKS_BLOCK) {
@ -1842,7 +1844,8 @@ var QueueOptimizer = (function QueueOptimizerClosure() {
var transformArgs = argsArray[j + (q << 2) + 1]; var transformArgs = argsArray[j + (q << 2) + 1];
var maskParams = argsArray[j + (q << 2) + 2][0]; var maskParams = argsArray[j + (q << 2) + 2][0];
images.push({ data: maskParams.data, width: maskParams.width, images.push({ data: maskParams.data, width: maskParams.width,
height: maskParams.height, transform: transformArgs}); height: maskParams.height,
transform: transformArgs });
} }
// replacing queue items // replacing queue items
@ -1958,8 +1961,8 @@ var QueueOptimizer = (function QueueOptimizerClosure() {
context.currentOperation = i; context.currentOperation = i;
}); });
function QueueOptimizer() { function QueueOptimizer() {}
}
QueueOptimizer.prototype = { QueueOptimizer.prototype = {
optimize: function QueueOptimizer_optimize(queue) { optimize: function QueueOptimizer_optimize(queue) {
var fnArray = queue.fnArray, argsArray = queue.argsArray; var fnArray = queue.fnArray, argsArray = queue.argsArray;