lib/dojo/_base/Color.js

   1 /*
   2         Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
   3         Available via Academic Free License >= 2.1 OR the modified BSD license.
   4         see: http://dojotoolkit.org/license for details
   5 */
   6
   7
   8 if(!dojo._hasResource["dojo._base.Color"]){
   9 dojo._hasResource["dojo._base.Color"]=true;
  10 dojo.provide("dojo._base.Color");
  11 dojo.require("dojo._base.array");
  12 dojo.require("dojo._base.lang");
  13 (function(){
  14 var d=dojo;
  15 dojo.Color=function(_1){
  16 if(_1){
  17 this.setColor(_1);
  18 }
  19 };
  20 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],transparent:d.config.transparentColor||[255,255,255]};
  21 dojo.extend(dojo.Color,{r:255,g:255,b:255,a:1,_set:function(r,g,b,a){
  22 var t=this;
  23 t.r=r;
  24 t.g=g;
  25 t.b=b;
  26 t.a=a;
  27 },setColor:function(_2){
  28 if(d.isString(_2)){
  29 d.colorFromString(_2,this);
  30 }else{
  31 if(d.isArray(_2)){
  32 d.colorFromArray(_2,this);
  33 }else{
  34 this._set(_2.r,_2.g,_2.b,_2.a);
  35 if(!(_2 instanceof d.Color)){
  36 this.sanitize();
  37 }
  38 }
  39 }
  40 return this;
  41 },sanitize:function(){
  42 return this;
  43 },toRgb:function(){
  44 var t=this;
  45 return [t.r,t.g,t.b];
  46 },toRgba:function(){
  47 var t=this;
  48 return [t.r,t.g,t.b,t.a];
  49 },toHex:function(){
  50 var _3=d.map(["r","g","b"],function(x){
  51 var s=this[x].toString(16);
  52 return s.length<2?"0"+s:s;
  53 },this);
  54 return "#"+_3.join("");
  55 },toCss:function(_4){
  56 var t=this,_5=t.r+", "+t.g+", "+t.b;
  57 return (_4?"rgba("+_5+", "+t.a:"rgb("+_5)+")";
  58 },toString:function(){
  59 return this.toCss(true);
  60 }});
  61 dojo.blendColors=function(_6,_7,_8,_9){
  62 var t=_9||new d.Color();
  63 d.forEach(["r","g","b","a"],function(x){
  64 t[x]=_6[x]+(_7[x]-_6[x])*_8;
  65 if(x!="a"){
  66 t[x]=Math.round(t[x]);
  67 }
  68 });
  69 return t.sanitize();
  70 };
  71 dojo.colorFromRgb=function(_a,_b){
  72 var m=_a.toLowerCase().match(/^rgba?\(([\s\.,0-9]+)\)/);
  73 return m&&dojo.colorFromArray(m[1].split(/\s*,\s*/),_b);
  74 };
  75 dojo.colorFromHex=function(_c,_d){
  76 var t=_d||new d.Color(),_e=(_c.length==4)?4:8,_f=(1<<_e)-1;
  77 _c=Number("0x"+_c.substr(1));
  78 if(isNaN(_c)){
  79 return null;
  80 }
  81 d.forEach(["b","g","r"],function(x){
  82 var c=_c&_f;
  83 _c>>=_e;
  84 t[x]=_e==4?17*c:c;
  85 });
  86 t.a=1;
  87 return t;
  88 };
  89 dojo.colorFromArray=function(a,obj){
  90 var t=obj||new d.Color();
  91 t._set(Number(a[0]),Number(a[1]),Number(a[2]),Number(a[3]));
  92 if(isNaN(t.a)){
  93 t.a=1;
  94 }
  95 return t.sanitize();
  96 };
  97 dojo.colorFromString=function(str,obj){
  98 var a=d.Color.named[str];
  99 return a&&d.colorFromArray(a,obj)||d.colorFromRgb(str,obj)||d.colorFromHex(str,obj);
 100 };
 101 })();
 102 }