yetangitu/pdf.js
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Move the creation of canvas path fonts to the worker.

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This commit is contained in:
Brendan Dahl 2013-08-19 16:33:20 -07:00
parent 81c9eeef4b
commit bb2529de03
16 changed files with 131 additions and 76 deletions
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38
src/core/evaluator.js
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@ -20,7 +20,7 @@
isStream, isString, JpegStream, Lexer, Metrics, Name, Parser,
Pattern, PDFImage, PDFJS, serifFonts, stdFontMap, symbolsFonts,
TilingPattern, TODO, warn, Util, Promise,
RefSetCache, isRef */
RefSetCache, isRef, TextRenderingMode */
'use strict';
@ -349,6 +349,31 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
return loadedName;
},
handleText: function PartialEvaluator_handleText(chars) {
var font = this.state.font.translated;
var glyphs = font.charsToGlyphs(chars);
var isAddToPathSet = !!(this.state.textRenderingMode &
TextRenderingMode.ADD_TO_PATH_FLAG);
if (isAddToPathSet || PDFJS.disableFontFace) {
for (var i = 0; i < glyphs.length; i++) {
if (glyphs[i] === null) {
continue;
}
var fontChar = glyphs[i].fontChar;
if (!font.renderer.hasBuiltPath(fontChar)) {
var path = font.renderer.getPathJs(fontChar);
this.handler.send('commonobj', [
font.loadedName + '_path_' + fontChar,
'FontPath',
path
]);
}
}
}
return glyphs;
},
setGState: function PartialEvaluator_setGState(resources, gState,
operatorList) {
@ -631,19 +656,21 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
this.state = prev;
}
} else if (cmd === 'Tj') { // showText
args[0] = this.state.font.translated.charsToGlyphs(args[0]);
args[0] = this.handleText(args[0]);
} else if (cmd === 'TJ') { // showSpacedText
var arr = args[0];
var arrLength = arr.length;
for (var i = 0; i < arrLength; ++i) {
if (isString(arr[i])) {
arr[i] = this.state.font.translated.charsToGlyphs(arr[i]);
arr[i] = this.handleText(arr[i]);
}
}
} else if (cmd === '\'') { // nextLineShowText
args[0] = this.state.font.translated.charsToGlyphs(args[0]);
args[0] = this.handleText(args[0]);
} else if (cmd === '"') { // nextLineSetSpacingShowText
args[2] = this.state.font.translated.charsToGlyphs(args[2]);
args[2] = this.handleText(args[2]);
} else if (cmd === 'Tr') { // setTextRenderingMode
this.state.textRenderingMode = args[0];
}
switch (fn) {
@ -1529,6 +1556,7 @@ var OperatorList = (function OperatorListClosure() {
var EvalState = (function EvalStateClosure() {
function EvalState() {
this.font = null;
this.textRenderingMode = TextRenderingMode.FILL;
}
EvalState.prototype = {
clone: function CanvasExtraState_clone() {