Refactor colorspace.js and fix jslint warnings.
This commit is contained in:
Kalervo Kujala
parent
33af12abd0
commit
cac9044161
@ -23,7 +23,7 @@ var ColorSpace = (function colorSpaceColorSpace() {
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};
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constructor.parse = function colorSpaceParse(cs, xref, res) {
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var IR = constructor.parseToIR(cs, xref, res, true);
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var IR = constructor.parseToIR(cs, xref, res);
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if (IR instanceof SeparationCS)
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return IR;
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@ -31,12 +31,7 @@ var ColorSpace = (function colorSpaceColorSpace() {
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};
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constructor.fromIR = function colorSpaceFromIR(IR) {
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var name;
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if (isArray(IR)) {
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name = IR[0];
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} else {
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name = IR;
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}
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var name = isArray(IR) ? IR[0] : IR;
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switch (name) {
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case 'DeviceGrayCS':
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@ -46,33 +41,28 @@ var ColorSpace = (function colorSpaceColorSpace() {
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case 'DeviceCmykCS':
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return new DeviceCmykCS();
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case 'PatternCS':
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var baseCS = IR[1];
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if (baseCS == null) {
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return new PatternCS(null);
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} else {
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return new PatternCS(ColorSpace.fromIR(baseCS));
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}
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var basePatternCS = IR[1];
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if (basePatternCS)
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basePatternCS = ColorSpace.fromIR(basePatternCS);
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return new PatternCS(basePatternCS);
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case 'IndexedCS':
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var baseCS = IR[1];
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var baseIndexedCS = IR[1];
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var hiVal = IR[2];
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var lookup = IR[3];
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return new IndexedCS(ColorSpace.fromIR(baseCS), hiVal, lookup);
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return new IndexedCS(ColorSpace.fromIR(baseIndexedCS), hiVal, lookup);
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case 'SeparationCS':
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var alt = IR[1];
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var tintFnIR = IR[2];
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return new SeparationCS(
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ColorSpace.fromIR(alt),
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PDFFunction.fromIR(tintFnIR)
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);
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return new SeparationCS(ColorSpace.fromIR(alt),
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PDFFunction.fromIR(tintFnIR));
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default:
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error('Unkown name ' + name);
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}
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return null;
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}
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};
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constructor.parseToIR = function colorSpaceParseToIR(cs, xref, res,
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parseOnly) {
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constructor.parseToIR = function colorSpaceParseToIR(cs, xref, res) {
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if (isName(cs)) {
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var colorSpaces = xref.fetchIfRef(res.get('ColorSpace'));
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if (isDict(colorSpaces)) {
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@ -83,9 +73,10 @@ var ColorSpace = (function colorSpaceColorSpace() {
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}
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cs = xref.fetchIfRef(cs);
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var mode;
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if (isName(cs)) {
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var mode = cs.name;
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mode = cs.name;
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this.mode = mode;
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switch (mode) {
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@ -104,7 +95,7 @@ var ColorSpace = (function colorSpaceColorSpace() {
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error('unrecognized colorspace ' + mode);
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}
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} else if (isArray(cs)) {
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var mode = cs[0].name;
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mode = cs[0].name;
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this.mode = mode;
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switch (mode) {
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@ -133,15 +124,15 @@ var ColorSpace = (function colorSpaceColorSpace() {
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return 'DeviceCmykCS';
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break;
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case 'Pattern':
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var baseCS = cs[1];
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if (baseCS)
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baseCS = ColorSpace.parseToIR(baseCS, xref, res);
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return ['PatternCS', baseCS];
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var basePatternCS = cs[1];
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if (basePatternCS)
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basePatternCS = ColorSpace.parseToIR(basePatternCS, xref, res);
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return ['PatternCS', basePatternCS];
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case 'Indexed':
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var baseCS = ColorSpace.parseToIR(cs[1], xref, res);
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var baseIndexedCS = ColorSpace.parseToIR(cs[1], xref, res);
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var hiVal = cs[2] + 1;
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var lookup = xref.fetchIfRef(cs[3]);
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return ['IndexedCS', baseCS, hiVal, lookup];
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return ['IndexedCS', baseIndexedCS, hiVal, lookup];
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case 'Separation':
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var alt = ColorSpace.parseToIR(cs[2], xref, res);
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var tintFnIR = PDFFunction.getIR(xref, xref.fetchIfRef(cs[3]));
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@ -165,7 +156,6 @@ var SeparationCS = (function separationCS() {
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this.name = 'Separation';
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this.numComps = 1;
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this.defaultColor = [1];
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this.base = base;
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this.tintFn = tintFn;
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}
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@ -179,12 +169,11 @@ var SeparationCS = (function separationCS() {
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var tintFn = this.tintFn;
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var base = this.base;
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var scale = 1 / ((1 << bits) - 1);
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var length = input.length;
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var pos = 0;
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var numComps = base.numComps;
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var baseBuf = new Uint8Array(numComps * length);
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for (var i = 0; i < length; ++i) {
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var scaled = input[i] * scale;
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var tinted = tintFn([scaled]);
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@ -213,13 +202,13 @@ var IndexedCS = (function indexedCS() {
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this.name = 'Indexed';
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this.numComps = 1;
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this.defaultColor = [0];
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this.base = base;
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var baseNumComps = base.numComps;
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this.highVal = highVal;
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var baseNumComps = base.numComps;
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var length = baseNumComps * highVal;
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var lookupArray = new Uint8Array(length);
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if (isStream(lookup)) {
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var bytes = lookup.getBytes(length);
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lookupArray.set(bytes);
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@ -235,7 +224,6 @@ var IndexedCS = (function indexedCS() {
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constructor.prototype = {
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getRgb: function indexcs_getRgb(color) {
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var numComps = this.base.numComps;
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var start = color[0] * numComps;
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var c = [];
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@ -249,9 +237,9 @@ var IndexedCS = (function indexedCS() {
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var numComps = base.numComps;
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var lookup = this.lookup;
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var length = input.length;
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var baseBuf = new Uint8Array(length * numComps);
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var baseBufPos = 0;
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for (var i = 0; i < length; ++i) {
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var lookupPos = input[i] * numComps;
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for (var j = 0; j < numComps; ++j) {
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@ -294,7 +282,7 @@ var DeviceGrayCS = (function deviceGrayCS() {
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})();
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var DeviceRgbCS = (function deviceRgbCS() {
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function constructor(bits) {
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function constructor() {
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this.name = 'DeviceRGB';
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this.numComps = 3;
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this.defaultColor = [0, 0, 0];
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@ -337,41 +325,41 @@ var DeviceCmykCS = (function deviceCmykCS() {
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r += 0.1373 * x;
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g += 0.1216 * x;
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b += 0.1255 * x;
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x = c1 * m1 * y * k1; // 0 0 1 0
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x = c1 * m1 * y * k1; // 0 0 1 0
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r += x;
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g += 0.9490 * x;
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x = c1 * m1 * y * k; // 0 0 1 1
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x = c1 * m1 * y * k; // 0 0 1 1
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r += 0.1098 * x;
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g += 0.1020 * x;
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x = c1 * m * y1 * k1; // 0 1 0 0
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x = c1 * m * y1 * k1; // 0 1 0 0
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r += 0.9255 * x;
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b += 0.5490 * x;
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x = c1 * m * y1 * k; // 0 1 0 1
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x = c1 * m * y1 * k; // 0 1 0 1
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r += 0.1412 * x;
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x = c1 * m * y * k1; // 0 1 1 0
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x = c1 * m * y * k1; // 0 1 1 0
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r += 0.9294 * x;
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g += 0.1098 * x;
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b += 0.1412 * x;
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x = c1 * m * y * k; // 0 1 1 1
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x = c1 * m * y * k; // 0 1 1 1
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r += 0.1333 * x;
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x = c * m1 * y1 * k1; // 1 0 0 0
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x = c * m1 * y1 * k1; // 1 0 0 0
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g += 0.6784 * x;
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b += 0.9373 * x;
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x = c * m1 * y1 * k; // 1 0 0 1
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x = c * m1 * y1 * k; // 1 0 0 1
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g += 0.0588 * x;
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b += 0.1412 * x;
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x = c * m1 * y * k1; // 1 0 1 0
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x = c * m1 * y * k1; // 1 0 1 0
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g += 0.6510 * x;
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b += 0.3137 * x;
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x = c * m1 * y * k; // 1 0 1 1
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x = c * m1 * y * k; // 1 0 1 1
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g += 0.0745 * x;
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x = c * m * y1 * k1; // 1 1 0 0
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x = c * m * y1 * k1; // 1 1 0 0
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r += 0.1804 * x;
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g += 0.1922 * x;
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b += 0.5725 * x;
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x = c * m * y1 * k; // 1 1 0 1
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x = c * m * y1 * k; // 1 1 0 1
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b += 0.0078 * x;
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x = c * m * y * k1; // 1 1 1 0
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x = c * m * y * k1; // 1 1 1 0
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r += 0.2118 * x;
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g += 0.2119 * x;
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b += 0.2235 * x;
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