+++ /dev/null
-define("dojo/_base/Color", ["./kernel", "./lang", "./array", "./config"], function(dojo, lang, ArrayUtil, config){
-
- var Color = 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
- // and creates a new Color instance to work from.
- //
- // example:
- // Work with a Color instance:
- // | var c = new dojo.Color();
- // | c.setColor([0,0,0]); // black
- // | var hex = c.toHex(); // #000000
- //
- // example:
- // Work with a node's color:
- // | var color = dojo.style("someNode", "backgroundColor");
- // | var n = new dojo.Color(color);
- // | // adjust the color some
- // | n.r *= .5;
- // | console.log(n.toString()); // rgb(128, 255, 255);
- if(color){ this.setColor(color); }
- };
-
- /*=====
- lang.mixin(dojo.Color,{
- named:{
- // summary: Dictionary list of all CSS named colors, by name. Values are 3-item arrays with corresponding RG and B values.
- }
- });
- =====*/
-
- // FIXME:
- // there's got to be a more space-efficient way to encode or discover
- // these!! Use hex?
- 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],
- "transparent": config.transparentColor || [0,0,0,0]
- };
-
- lang.extend(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
- // and sets this color instance to that value.
- //
- // example:
- // | var c = new dojo.Color(); // no color
- // | c.setColor("#ededed"); // greyish
- if(lang.isString(color)){
- Color.fromString(color, this);
- }else if(lang.isArray(color)){
- Color.fromArray(color, this);
- }else{
- this._set(color.r, color.g, color.b, color.a);
- if(!(color instanceof Color)){ this.sanitize(); }
- }
- return this; // dojo.Color
- },
- sanitize: function(){
- // summary:
- // Ensures the object has correct attributes
- // description:
- // the default implementation does nothing, include dojo.colors to
- // augment it with real checks
- return this; // dojo.Color
- },
- toRgb: function(){
- // summary:
- // Returns 3 component array of rgb values
- // example:
- // | var c = new dojo.Color("#000000");
- // | console.log(c.toRgb()); // [0,0,0]
- var t = this;
- return [t.r, t.g, t.b]; // Array
- },
- toRgba: function(){
- // summary:
- // Returns a 4 component array of rgba values from the color
- // represented by this object.
- var t = this;
- return [t.r, t.g, t.b, t.a]; // Array
- },
- toHex: function(){
- // summary:
- // Returns a CSS color string in hexadecimal representation
- // example:
- // | console.log(new dojo.Color([0,0,0]).toHex()); // #000000
- var arr = ArrayUtil.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
- // example:
- // | var c = new dojo.Color("#FFF").toCss();
- // | console.log(c); // rgb('255','255','255')
- 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
- }
- });
-
- Color.blendColors = 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 t = obj || new Color();
- ArrayUtil.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
- };
-
- Color.fromRgb = dojo.colorFromRgb = function(/*String*/ color, /*dojo.Color?*/ obj){
- // summary:
- // Returns a `dojo.Color` instance from a string of the form
- // "rgb(...)" or "rgba(...)". Optionally accepts a `dojo.Color`
- // object to update with the parsed value and return instead of
- // creating a new object.
- // returns:
- // A dojo.Color object. If obj is passed, it will be the return value.
- var m = color.toLowerCase().match(/^rgba?\(([\s\.,0-9]+)\)/);
- return m && Color.fromArray(m[1].split(/\s*,\s*/), obj); // dojo.Color
- };
-
- Color.fromHex = 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. Optionally accepts a
- // `dojo.Color` object to update with the parsed value.
- //
- // returns:
- // A dojo.Color object. If obj is passed, it will be the return value.
- //
- // example:
- // | var thing = dojo.colorFromHex("#ededed"); // grey, longhand
- //
- // example:
- // | var thing = dojo.colorFromHex("#000"); // black, shorthand
- var t = obj || new Color(),
- bits = (color.length == 4) ? 4 : 8,
- mask = (1 << bits) - 1;
- color = Number("0x" + color.substr(1));
- if(isNaN(color)){
- return null; // dojo.Color
- }
- ArrayUtil.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
- };
-
- Color.fromArray = dojo.colorFromArray = function(/*Array*/ a, /*dojo.Color?*/ obj){
- // summary:
- // Builds a `dojo.Color` from a 3 or 4 element array, mapping each
- // element in sequence to the rgb(a) values of the color.
- // example:
- // | var myColor = dojo.colorFromArray([237,237,237,0.5]); // grey, 50% alpha
- // returns:
- // A dojo.Color object. If obj is passed, it will be the return value.
- var t = obj || new 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
- };
-
- Color.fromString = dojo.colorFromString = function(/*String*/ str, /*dojo.Color?*/ obj){
- // summary:
- // Parses `str` for a color value. Accepts hex, rgb, and rgba
- // style color values.
- // 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 = Color.named[str];
- return a && Color.fromArray(a, obj) || Color.fromRgb(str, obj) || Color.fromHex(str, obj); // dojo.Color
- };
-
- return Color;
-});
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