--- /dev/null
+if(!dojo._hasResource["dojo._base.Color"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojo._base.Color"] = true;
+dojo.provide("dojo._base.Color");
+dojo.require("dojo._base.array");
+dojo.require("dojo._base.lang");
+
+dojo.Color = function(/*Array|String|Object*/ color){
+ // summary:
+ // takes a named string, hex string, array of rgb or rgba values,
+ // an object with r, g, b, and a properties, or another dojo.Color object
+ if(color){ this.setColor(color); }
+};
+
+// FIXME: there's got to be a more space-efficient way to encode or discover these!! Use hex?
+dojo.Color.named = {
+ black: [0,0,0],
+ silver: [192,192,192],
+ gray: [128,128,128],
+ white: [255,255,255],
+ maroon: [128,0,0],
+ red: [255,0,0],
+ purple: [128,0,128],
+ fuchsia: [255,0,255],
+ green: [0,128,0],
+ lime: [0,255,0],
+ olive: [128,128,0],
+ yellow: [255,255,0],
+ navy: [0,0,128],
+ blue: [0,0,255],
+ teal: [0,128,128],
+ aqua: [0,255,255]
+};
+
+
+dojo.extend(dojo.Color, {
+ r: 255, g: 255, b: 255, a: 1,
+ _set: function(r, g, b, a){
+ var t = this; t.r = r; t.g = g; t.b = b; t.a = a;
+ },
+ setColor: function(/*Array|String|Object*/ color){
+ // summary:
+ // takes a named string, hex string, array of rgb or rgba values,
+ // an object with r, g, b, and a properties, or another dojo.Color object
+ var d = dojo;
+ if(d.isString(color)){
+ d.colorFromString(color, this);
+ }else if(d.isArray(color)){
+ d.colorFromArray(color, this);
+ }else{
+ this._set(color.r, color.g, color.b, color.a);
+ if(!(color instanceof d.Color)){ this.sanitize(); }
+ }
+ return this; // dojo.Color
+ },
+ sanitize: function(){
+ // summary:
+ // makes sure that the object has correct attributes
+ // description:
+ // the default implementation does nothing, include dojo.colors to
+ // augment it to real checks
+ return this; // dojo.Color
+ },
+ toRgb: function(){
+ // summary: returns 3 component array of rgb values
+ var t = this;
+ return [t.r, t.g, t.b]; // Array
+ },
+ toRgba: function(){
+ // summary: returns a 4 component array of rgba values
+ var t = this;
+ return [t.r, t.g, t.b, t.a]; // Array
+ },
+ toHex: function(){
+ // summary: returns a css color string in hexadecimal representation
+ var arr = dojo.map(["r", "g", "b"], function(x){
+ var s = this[x].toString(16);
+ return s.length < 2 ? "0" + s : s;
+ }, this);
+ return "#" + arr.join(""); // String
+ },
+ toCss: function(/*Boolean?*/ includeAlpha){
+ // summary: returns a css color string in rgb(a) representation
+ var t = this, rgb = t.r + ", " + t.g + ", " + t.b;
+ return (includeAlpha ? "rgba(" + rgb + ", " + t.a : "rgb(" + rgb) + ")"; // String
+ },
+ toString: function(){
+ // summary: returns a visual representation of the color
+ return this.toCss(true); // String
+ }
+});
+
+dojo.blendColors = function(
+ /*dojo.Color*/ start,
+ /*dojo.Color*/ end,
+ /*Number*/ weight,
+ /*dojo.Color?*/ obj
+){
+ // summary:
+ // blend colors end and start with weight from 0 to 1, 0.5 being a 50/50 blend,
+ // can reuse a previously allocated dojo.Color object for the result
+ var d = dojo, t = obj || new dojo.Color();
+ d.forEach(["r", "g", "b", "a"], function(x){
+ t[x] = start[x] + (end[x] - start[x]) * weight;
+ if(x != "a"){ t[x] = Math.round(t[x]); }
+ });
+ return t.sanitize(); // dojo.Color
+};
+
+dojo.colorFromRgb = function(/*String*/ color, /*dojo.Color?*/ obj){
+ // summary: get rgb(a) array from css-style color declarations
+ var m = color.toLowerCase().match(/^rgba?\(([\s\.,0-9]+)\)/);
+ return m && dojo.colorFromArray(m[1].split(/\s*,\s*/), obj); // dojo.Color
+};
+
+dojo.colorFromHex = function(/*String*/ color, /*dojo.Color?*/ obj){
+ // summary: converts a hex string with a '#' prefix to a color object.
+ // Supports 12-bit #rgb shorthand.
+ var d = dojo, t = obj || new d.Color(),
+ bits = (color.length == 4) ? 4 : 8,
+ mask = (1 << bits) - 1;
+ color = Number("0x" + color.substr(1));
+ if(isNaN(color)){
+ return null; // dojo.Color
+ }
+ d.forEach(["b", "g", "r"], function(x){
+ var c = color & mask;
+ color >>= bits;
+ t[x] = bits == 4 ? 17 * c : c;
+ });
+ t.a = 1;
+ return t; // dojo.Color
+};
+
+dojo.colorFromArray = function(/*Array*/ a, /*dojo.Color?*/ obj){
+ // summary: builds a color from 1, 2, 3, or 4 element array
+ var t = obj || new dojo.Color();
+ t._set(Number(a[0]), Number(a[1]), Number(a[2]), Number(a[3]));
+ if(isNaN(t.a)){ t.a = 1; }
+ return t.sanitize(); // dojo.Color
+};
+
+dojo.colorFromString = function(/*String*/ str, /*dojo.Color?*/ obj){
+ // summary:
+ // parses str for a color value.
+ // description:
+ // Acceptable input values for str may include arrays of any form
+ // accepted by dojo.colorFromArray, hex strings such as "#aaaaaa", or
+ // rgb or rgba strings such as "rgb(133, 200, 16)" or "rgba(10, 10,
+ // 10, 50)"
+ // returns:
+ // a dojo.Color object. If obj is passed, it will be the return value.
+ var a = dojo.Color.named[str];
+ return a && dojo.colorFromArray(a, obj) || dojo.colorFromRgb(str, obj) || dojo.colorFromHex(str, obj);
+};
+
+}
projects / eow / blobdiff