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https://github.com/mozilla/pdf.js.git
synced 2025-04-19 22:58:07 +02:00
Transform setGState to IR form and hanlde edge case of setFont
This commit is contained in:
Julian Viereck
parent
3054102d3b
commit
06994d3394
1 changed files with 127 additions and 95 deletions
222
pdf.js
222
pdf.js
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@ -4398,6 +4398,48 @@ var PartialEvaluator = (function partialEvaluator() {
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}
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}
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var self = this;
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function handleSetFont(fontName) {
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var loadedName = null;
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var fontRes = resources.get('Font');
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if (fontRes) {
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fontRes = xref.fetchIfRef(fontRes);
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var font = xref.fetchIfRef(fontRes.get(fontName));
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assertWellFormed(isDict(font));
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if (!font.translated) {
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font.translated = self.translateFont(font, xref, resources);
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if (font.translated) {
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// keep track of each font we translated so the caller can
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// load them asynchronously before calling display on a page
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loadedName = "font_" + uniquePrefix + (FontLoadedCounter++);
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font.translated.properties.loadedName = loadedName;
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font.loadedName = loadedName;
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FontsMap[loadedName] = font;
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handler.send("obj", [
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loadedName,
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"Font",
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font.translated.name,
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font.translated.file,
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font.translated.properties
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]);
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}
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}
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loadedName = loadedName || font.loadedName;
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// Ensure the font is ready before the font is set
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// and later on used for drawing.
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// TODO: This should get insert to the IRQueue only once per
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// page.
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insertDependency([loadedName]);
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return loadedName;
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} else {
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// TODO: TOASK: Is it possible to get here? If so, what does
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// args[0].name should be like???
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}
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}
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function buildPaintImageXObject(image, inline) {
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var dict = image.dict;
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var w = dict.get('Width', 'W');
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@ -4575,42 +4617,7 @@ var PartialEvaluator = (function partialEvaluator() {
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}
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}
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} else if (cmd == 'Tf') { // eagerly collect all fonts
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var fontName = args[0].name;
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var fontRes = resources.get('Font');
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if (fontRes) {
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fontRes = xref.fetchIfRef(fontRes);
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var font = xref.fetchIfRef(fontRes.get(fontName));
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assertWellFormed(isDict(font));
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if (!font.translated) {
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font.translated = this.translateFont(font, xref, resources);
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if (font.translated) {
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// keep track of each font we translated so the caller can
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// load them asynchronously before calling display on a page
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var loadedName = "font_" + uniquePrefix + (FontLoadedCounter++);
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font.translated.properties.loadedName = loadedName;
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FontsMap[loadedName] = font;
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handler.send("obj", [
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loadedName,
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"Font",
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font.translated.name,
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font.translated.file,
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font.translated.properties
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]);
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}
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}
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args[0].name = font.translated.properties.loadedName;
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// Ensure the font is ready before the font is set
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// and later on used for drawing.
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// TODO: This should get insert to the IRQueue only once per
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// page.
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insertDependency([font.translated.properties.loadedName]);
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} else {
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// TODO: TOASK: Is it possible to get here? If so, what does
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// args[0].name should be like???
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}
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args[0].name = handleSetFont(args[0].name);
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} else if (cmd == 'EI') {
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buildPaintImageXObject(args[0], true);
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}
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@ -4638,6 +4645,58 @@ var PartialEvaluator = (function partialEvaluator() {
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fn = "shadingFill";
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break;
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case "setGState":
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var dictName = args[0];
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var extGState = xref.fetchIfRef(resources.get('ExtGState'));
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if (isDict(extGState) && extGState.has(dictName.name)) {
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var gsState = xref.fetchIfRef(extGState.get(dictName.name));
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// This array holds the converted/processed state data.
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var gsStateObj = [];
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gsState.forEach(function canvasGraphicsSetGStateForEach(key, value) {
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switch (key) {
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case 'Type':
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break;
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case 'LW':
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case 'LC':
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case 'LJ':
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case 'ML':
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case 'D':
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case 'RI':
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case 'FL':
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gsStateObj.push([key, value]);
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break;
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case 'Font':
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gsStateObj.push(['Font', handleSetFont(value[0]), value[1] ]);
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break;
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case 'OP':
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case 'op':
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case 'OPM':
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case 'BG':
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case 'BG2':
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case 'UCR':
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case 'UCR2':
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case 'TR':
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case 'TR2':
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case 'HT':
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case 'SM':
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case 'SA':
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case 'BM':
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case 'SMask':
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case 'CA':
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case 'ca':
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case 'AIS':
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case 'TK':
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TODO('graphic state operator ' + key);
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break;
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default:
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warn('Unknown graphic state operator ' + key);
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break;
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}
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});
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args = [ gsStateObj ];
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}
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}
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fnArray.push(fn);
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@ -5261,66 +5320,39 @@ var CanvasGraphics = (function canvasGraphics() {
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setFlatness: function canvasGraphicsSetFlatness(flatness) {
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TODO('set flatness: ' + flatness);
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},
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setGState: function canvasGraphicsSetGState(dictName) {
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var extGState = this.xref.fetchIfRef(this.res.get('ExtGState'));
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if (isDict(extGState) && extGState.has(dictName.name)) {
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var gsState = this.xref.fetchIfRef(extGState.get(dictName.name));
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var self = this;
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gsState.forEach(function canvasGraphicsSetGStateForEach(key, value) {
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switch (key) {
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case 'Type':
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break;
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case 'LW':
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self.setLineWidth(value);
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break;
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case 'LC':
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self.setLineCap(value);
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break;
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case 'LJ':
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self.setLineJoin(value);
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break;
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case 'ML':
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self.setMiterLimit(value);
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break;
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case 'D':
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self.setDash(value[0], value[1]);
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break;
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case 'RI':
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self.setRenderingIntent(value);
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break;
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case 'FL':
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self.setFlatness(value);
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break;
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case 'Font':
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self.setFont(value[0], value[1]);
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break;
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case 'OP':
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case 'op':
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case 'OPM':
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case 'BG':
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case 'BG2':
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case 'UCR':
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case 'UCR2':
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case 'TR':
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case 'TR2':
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case 'HT':
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case 'SM':
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case 'SA':
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case 'BM':
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case 'SMask':
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case 'CA':
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case 'ca':
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case 'AIS':
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case 'TK':
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TODO('graphic state operator ' + key);
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break;
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default:
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warn('Unknown graphic state operator ' + key);
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break;
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}
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});
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}
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setGState: function canvasGraphicsSetGState(states) {
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for (var i = 0; i < states.lenght; i++) {
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var state = states[i];
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var key = state[0];
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var value = state[1];
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switch (key) {
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case 'LW':
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this.setLineWidth(value);
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break;
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case 'LC':
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self.setLineCap(value);
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break;
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case 'LJ':
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self.setLineJoin(value);
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break;
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case 'ML':
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self.setMiterLimit(value);
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break;
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case 'D':
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self.setDash(value[0], value[1]);
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break;
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case 'RI':
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self.setRenderingIntent(value);
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break;
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case 'FL':
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self.setFlatness(value);
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break;
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case 'Font':
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self.setFont(state[1], state[2]);
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break;
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}
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}
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},
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save: function canvasGraphicsSave() {
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this.ctx.save();
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