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Share ColorSpace.getRgb() between all sub-classes.

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This commit is contained in:
Nicholas Nethercote 2014-02-26 05:51:29 -08:00
parent f11a6ae238
commit c4fab2f234
1 changed files with 12 additions and 37 deletions
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49
src/shared/colorspace.js
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@ -32,13 +32,16 @@ var ColorSpace = (function ColorSpaceClosure() {
* of the rgb components, each value ranging from [0,255]. * of the rgb components, each value ranging from [0,255].
*/ */
getRgb: function ColorSpace_getRgb(src, srcOffset) { getRgb: function ColorSpace_getRgb(src, srcOffset) {
error('Should not call ColorSpace.getRgb'); var rgb = new Uint8Array(3);
this.getRgbItem(src, srcOffset, rgb, 0);
return rgb;
}, },
/** /**
* Converts the color value to the RGB color, similar to the getRgb method. * Converts the color value to the RGB color, similar to the getRgb method.
* The result placed into the dest array starting from the destOffset. * The result placed into the dest array starting from the destOffset.
*/ */
getRgbItem: function ColorSpace_getRgb(src, srcOffset, dest, destOffset) { getRgbItem: function ColorSpace_getRgbItem(src, srcOffset,
dest, destOffset) {
error('Should not call ColorSpace.getRgbItem'); error('Should not call ColorSpace.getRgbItem');
}, },
/** /**
@ -365,11 +368,7 @@ var AlternateCS = (function AlternateCSClosure() {
} }
AlternateCS.prototype = { AlternateCS.prototype = {
getRgb: function AlternateCS_getRgb(src, srcOffset) { getRgb: ColorSpace.prototype.getRgb,
var rgb = new Uint8Array(3);
this.getRgbItem(src, srcOffset, rgb, 0);
return rgb;
},
getRgbItem: function AlternateCS_getRgbItem(src, srcOffset, getRgbItem: function AlternateCS_getRgbItem(src, srcOffset,
dest, destOffset) { dest, destOffset) {
var baseNumComps = this.base.numComps; var baseNumComps = this.base.numComps;
@ -468,11 +467,7 @@ var IndexedCS = (function IndexedCSClosure() {
} }
IndexedCS.prototype = { IndexedCS.prototype = {
getRgb: function IndexedCS_getRgb(src, srcOffset) { getRgb: ColorSpace.prototype.getRgb,
var numComps = this.base.numComps;
var start = src[srcOffset] * numComps;
return this.base.getRgb(this.lookup, start);
},
getRgbItem: function IndexedCS_getRgbItem(src, srcOffset, getRgbItem: function IndexedCS_getRgbItem(src, srcOffset,
dest, destOffset) { dest, destOffset) {
var numComps = this.base.numComps; var numComps = this.base.numComps;
@ -516,11 +511,7 @@ var DeviceGrayCS = (function DeviceGrayCSClosure() {
} }
DeviceGrayCS.prototype = { DeviceGrayCS.prototype = {
getRgb: function DeviceGrayCS_getRgb(src, srcOffset) { getRgb: ColorSpace.prototype.getRgb,
var rgb = new Uint8Array(3);
this.getRgbItem(src, srcOffset, rgb, 0);
return rgb;
},
getRgbItem: function DeviceGrayCS_getRgbItem(src, srcOffset, getRgbItem: function DeviceGrayCS_getRgbItem(src, srcOffset,
dest, destOffset) { dest, destOffset) {
var c = (src[srcOffset] * 255) | 0; var c = (src[srcOffset] * 255) | 0;
@ -561,11 +552,7 @@ var DeviceRgbCS = (function DeviceRgbCSClosure() {
this.defaultColor = new Float32Array([0, 0, 0]); this.defaultColor = new Float32Array([0, 0, 0]);
} }
DeviceRgbCS.prototype = { DeviceRgbCS.prototype = {
getRgb: function DeviceRgbCS_getRgb(src, srcOffset) { getRgb: ColorSpace.prototype.getRgb,
var rgb = new Uint8Array(3);
this.getRgbItem(src, srcOffset, rgb, 0);
return rgb;
},
getRgbItem: function DeviceRgbCS_getRgbItem(src, srcOffset, getRgbItem: function DeviceRgbCS_getRgbItem(src, srcOffset,
dest, destOffset) { dest, destOffset) {
var r = (src[srcOffset] * 255) | 0; var r = (src[srcOffset] * 255) | 0;
@ -658,11 +645,7 @@ var DeviceCmykCS = (function DeviceCmykCSClosure() {
this.defaultColor = new Float32Array([0, 0, 0, 1]); this.defaultColor = new Float32Array([0, 0, 0, 1]);
} }
DeviceCmykCS.prototype = { DeviceCmykCS.prototype = {
getRgb: function DeviceCmykCS_getRgb(src, srcOffset) { getRgb: ColorSpace.prototype.getRgb,
var rgb = new Uint8Array(3);
convertToRgb(src, srcOffset, 1, rgb, 0);
return rgb;
},
getRgbItem: function DeviceCmykCS_getRgbItem(src, srcOffset, getRgbItem: function DeviceCmykCS_getRgbItem(src, srcOffset,
dest, destOffset) { dest, destOffset) {
convertToRgb(src, srcOffset, 1, dest, destOffset); convertToRgb(src, srcOffset, 1, dest, destOffset);
@ -769,11 +752,7 @@ var CalGrayCS = (function CalGrayCSClosure() {
} }
CalGrayCS.prototype = { CalGrayCS.prototype = {
getRgb: function CalGrayCS_getRgb(src, srcOffset) { getRgb: ColorSpace.prototype.getRgb,
var rgb = new Uint8Array(3);
this.getRgbItem(src, srcOffset, rgb, 0);
return rgb;
},
getRgbItem: function CalGrayCS_getRgbItem(src, srcOffset, getRgbItem: function CalGrayCS_getRgbItem(src, srcOffset,
dest, destOffset) { dest, destOffset) {
convertToRgb(this, src, srcOffset, dest, destOffset, 1); convertToRgb(this, src, srcOffset, dest, destOffset, 1);
@ -912,11 +891,7 @@ var LabCS = (function LabCSClosure() {
} }
LabCS.prototype = { LabCS.prototype = {
getRgb: function LabCS_getRgb(src, srcOffset) { getRgb: ColorSpace.prototype.getRgb,
var rgb = new Uint8Array(3);
convertToRgb(this, src, srcOffset, false, rgb, 0);
return rgb;
},
getRgbItem: function LabCS_getRgbItem(src, srcOffset, dest, destOffset) { getRgbItem: function LabCS_getRgbItem(src, srcOffset, dest, destOffset) {
convertToRgb(this, src, srcOffset, false, dest, destOffset); convertToRgb(this, src, srcOffset, false, dest, destOffset);
}, },