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Moves ColorSpace logic into evaluator

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This commit is contained in:
Yury Delendik 2014-05-21 12:47:42 -05:00
parent d2da73b8c4
commit 542c9c4c7a
4 changed files with 121 additions and 143 deletions
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149
src/core/evaluator.js
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@ -131,13 +131,19 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
};
var groupSubtype = group.get('S');
var colorSpace;
if (isName(groupSubtype) && groupSubtype.name === 'Transparency') {
groupOptions.isolated = (group.get('I') || false);
groupOptions.knockout = (group.get('K') || false);
var colorSpace = group.get('CS');
groupOptions.colorSpace = (colorSpace ?
ColorSpace.parseToIR(colorSpace, this.xref, resources) : null);
colorSpace = (group.has('CS') ?
ColorSpace.parse(group.get('CS'), this.xref, resources) : null);
}
if (smask && smask.backdrop) {
colorSpace = colorSpace || ColorSpace.singletons.rgb;
smask.backdrop = colorSpace.getRgb(smask.backdrop, 0);
}
operatorList.addOp(OPS.beginGroup, [groupOptions]);
}
@ -552,6 +558,36 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
}
},
handleColorN: function PartialEvaluator_handleColorN(operatorList, fn, args,
cs, patterns, resources, xref) {
// compile tiling patterns
var patternName = args[args.length - 1];
// SCN/scn applies patterns along with normal colors
var pattern;
if (isName(patternName) &&
(pattern = patterns.get(patternName.name))) {
var dict = (isStream(pattern) ? pattern.dict : pattern);
var typeNum = dict.get('PatternType');
if (typeNum == TILING_PATTERN) {
var color = cs.base ? cs.base.getRgb(args, 0) : null;
return this.handleTilingType(fn, color, resources, pattern,
dict, operatorList);
} else if (typeNum == SHADING_PATTERN) {
var shading = dict.get('Shading');
var matrix = dict.get('Matrix');
pattern = Pattern.parseShading(shading, matrix, xref, resources);
operatorList.addOp(fn, pattern.getIR());
return Promise.resolve();
} else {
return Promise.reject('Unknown PatternType: ' + typeNum);
}
}
// TODO shall we fail here?
operatorList.addOp(fn, args);
return Promise.resolve();
},
getOperatorList: function PartialEvaluator_getOperatorList(stream,
resources,
operatorList,
@ -568,49 +604,17 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var patterns = (resources.get('Pattern') || Dict.empty);
var stateManager = new StateManager(initialState || new EvalState());
var preprocessor = new EvaluatorPreprocessor(stream, xref, stateManager);
var shading;
var timeSlotManager = new TimeSlotManager();
return new Promise(function next(resolve, reject) {
timeSlotManager.reset();
var stop, operation, i, ii;
var stop, operation, i, ii, cs;
while (!(stop = timeSlotManager.check()) &&
(operation = preprocessor.read())) {
var args = operation.args;
var fn = operation.fn;
switch (fn | 0) {
case OPS.setStrokeColorN:
case OPS.setFillColorN:
if (args[args.length - 1].code) {
break;
}
// compile tiling patterns
var patternName = args[args.length - 1];
// SCN/scn applies patterns along with normal colors
var pattern;
if (isName(patternName) &&
(pattern = patterns.get(patternName.name))) {
var dict = (isStream(pattern) ? pattern.dict : pattern);
var typeNum = dict.get('PatternType');
if (typeNum == TILING_PATTERN) {
return self.handleTilingType(fn, args, resources, pattern,
dict, operatorList).then(
function() {
next(resolve, reject);
}, reject);
} else if (typeNum == SHADING_PATTERN) {
shading = dict.get('Shading');
var matrix = dict.get('Matrix');
pattern = Pattern.parseShading(shading, matrix, xref,
resources);
args = pattern.getIR();
} else {
error('Unknown PatternType ' + typeNum);
}
}
break;
case OPS.paintXObject:
if (args[0].code) {
break;
@ -692,18 +696,83 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
case OPS.setTextRenderingMode:
stateManager.state.textRenderingMode = args[0];
break;
// Parse the ColorSpace data to a raw format.
case OPS.setFillColorSpace:
stateManager.state.fillColorSpace =
ColorSpace.parse(args[0], xref, resources);
continue;
case OPS.setStrokeColorSpace:
args = [ColorSpace.parseToIR(args[0], xref, resources)];
stateManager.state.strokeColorSpace =
ColorSpace.parse(args[0], xref, resources);
continue;
case OPS.setFillColor:
cs = stateManager.state.fillColorSpace;
args = cs.getRgb(args, 0);
fn = OPS.setFillRGBColor;
break;
case OPS.setStrokeColor:
cs = stateManager.state.strokeColorSpace;
args = cs.getRgb(args, 0);
fn = OPS.setStrokeRGBColor;
break;
case OPS.setFillGray:
stateManager.state.fillColorSpace = ColorSpace.singletons.gray;
args = ColorSpace.singletons.gray.getRgb(args, 0);
fn = OPS.setFillRGBColor;
break;
case OPS.setStrokeGray:
stateManager.state.strokeColorSpace = ColorSpace.singletons.gray;
args = ColorSpace.singletons.gray.getRgb(args, 0);
fn = OPS.setStrokeRGBColor;
break;
case OPS.setFillCMYKColor:
stateManager.state.fillColorSpace = ColorSpace.singletons.cmyk;
args = ColorSpace.singletons.cmyk.getRgb(args, 0);
fn = OPS.setFillRGBColor;
break;
case OPS.setStrokeCMYKColor:
stateManager.state.strokeColorSpace = ColorSpace.singletons.cmyk;
args = ColorSpace.singletons.cmyk.getRgb(args, 0);
fn = OPS.setStrokeRGBColor;
break;
case OPS.setFillRGBColor:
stateManager.state.fillColorSpace = ColorSpace.singletons.rgb;
args = ColorSpace.singletons.rgb.getRgb(args, 0);
break;
case OPS.setStrokeRGBColor:
stateManager.state.strokeColorSpace = ColorSpace.singletons.rgb;
args = ColorSpace.singletons.rgb.getRgb(args, 0);
break;
case OPS.setFillColorN:
cs = stateManager.state.fillColorSpace;
if (cs.name === 'Pattern') {
return self.handleColorN(operatorList, OPS.setFillColorN,
args, cs, patterns, resources, xref).then(function() {
next(resolve, reject);
}, reject);
}
args = cs.getRgb(args, 0);
fn = OPS.setFillRGBColor;
break;
case OPS.setStrokeColorN:
cs = stateManager.state.strokeColorSpace;
if (cs.name === 'Pattern') {
return self.handleColorN(operatorList, OPS.setStrokeColorN,
args, cs, patterns, resources, xref).then(function() {
next(resolve, reject);
}, reject);
}
args = cs.getRgb(args, 0);
fn = OPS.setStrokeRGBColor;
break;
case OPS.shadingFill:
var shadingRes = resources.get('Shading');
if (!shadingRes) {
error('No shading resource found');
}
shading = shadingRes.get(args[0].name);
var shading = shadingRes.get(args[0].name);
if (!shading) {
error('No shading object found');
}
@ -1840,6 +1909,8 @@ var EvalState = (function EvalStateClosure() {
this.ctm = new Float32Array(IDENTITY_MATRIX);
this.font = null;
this.textRenderingMode = TextRenderingMode.FILL;
this.fillColorSpace = ColorSpace.singletons.gray;
this.strokeColorSpace = ColorSpace.singletons.gray;
}
EvalState.prototype = {
clone: function CanvasExtraState_clone() {