]> git.pond.sub.org Git - eow/blobdiff - static/dojo-release-1.1.1/dojox/color/_base.js
add Dojo 1.1.1
[eow] / static / dojo-release-1.1.1 / dojox / color / _base.js
diff --git a/static/dojo-release-1.1.1/dojox/color/_base.js b/static/dojo-release-1.1.1/dojox/color/_base.js
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+if(!dojo._hasResource["dojox.color._base"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.color._base"] = true;
+dojo.provide("dojox.color._base");
+dojo.require("dojo.colors");
+
+//     alias all the dojo.Color mechanisms
+dojox.color.Color=dojo.Color;
+dojox.color.blend=dojo.blendColors;
+dojox.color.fromRgb=dojo.colorFromRgb;
+dojox.color.fromHex=dojo.colorFromHex;
+dojox.color.fromArray=dojo.colorFromArray;
+dojox.color.fromString=dojo.colorFromString;
+
+//     alias the dojo.colors mechanisms
+dojox.color.greyscale=dojo.colors.makeGrey;
+
+//     static methods
+dojo.mixin(dojox.color, {
+       fromCmy: function(/* Object|Array|int */cyan, /*int*/magenta, /*int*/yellow){
+               //      summary
+               //      Create a dojox.color.Color from a CMY defined color.
+               //      All colors should be expressed as 0-100 (percentage)
+
+               if(dojo.isArray(cyan)){
+                       magenta=cyan[1], yellow=cyan[2], cyan=cyan[0];
+               } else if(dojo.isObject(cyan)){
+                       magenta=cyan.m, yellow=cyan.y, cyan=cyan.c;
+               }
+               cyan/=100, magenta/=100, yellow/=100;
+
+               var r=1-cyan, g=1-magenta, b=1-yellow;
+               return new dojox.color.Color({ r:Math.round(r*255), g:Math.round(g*255), b:Math.round(b*255) });        //      dojox.color.Color
+       },
+
+       fromCmyk: function(/* Object|Array|int */cyan, /*int*/magenta, /*int*/yellow, /*int*/black){
+               //      summary
+               //      Create a dojox.color.Color from a CMYK defined color.
+               //      All colors should be expressed as 0-100 (percentage)
+
+               if(dojo.isArray(cyan)){
+                       magenta=cyan[1], yellow=cyan[2], black=cyan[3], cyan=cyan[0];
+               } else if(dojo.isObject(cyan)){
+                       magenta=cyan.m, yellow=cyan.y, black=cyan.b, cyan=cyan.c;
+               }
+               cyan/=100, magenta/=100, yellow/=100, black/=100;
+               var r,g,b;
+               r = 1-Math.min(1, cyan*(1-black)+black);
+               g = 1-Math.min(1, magenta*(1-black)+black);
+               b = 1-Math.min(1, yellow*(1-black)+black);
+               return new dojox.color.Color({ r:Math.round(r*255), g:Math.round(g*255), b:Math.round(b*255) });        //      dojox.color.Color
+       },
+       
+       fromHsl: function(/* Object|Array|int */hue, /* int */saturation, /* int */luminosity){
+               //      summary
+               //      Create a dojox.color.Color from an HSL defined color.
+               //      hue from 0-359 (degrees), saturation and luminosity 0-100.
+
+               if(dojo.isArray(hue)){
+                       saturation=hue[1], luminosity=hue[2], hue=hue[0];
+               } else if(dojo.isObject(hue)){
+                       saturation=hue.s, luminosity=hue.l, hue=hue.h;
+               }
+               saturation/=100;
+               luminosity/=100;
+
+               while(hue<0){ hue+=360; }
+               while(hue>=360){ hue-=360; }
+               
+               var r, g, b;
+               if(hue<120){
+                       r=(120-hue)/60, g=hue/60, b=0;
+               } else if (hue<240){
+                       r=0, g=(240-hue)/60, b=(hue-120)/60;
+               } else {
+                       r=(hue-240)/60, g=0, b=(360-hue)/60;
+               }
+               
+               r=2*saturation*Math.min(r, 1)+(1-saturation);
+               g=2*saturation*Math.min(g, 1)+(1-saturation);
+               b=2*saturation*Math.min(b, 1)+(1-saturation);
+               if(luminosity<0.5){
+                       r*=luminosity, g*=luminosity, b*=luminosity;
+               }else{
+                       r=(1-luminosity)*r+2*luminosity-1;
+                       g=(1-luminosity)*g+2*luminosity-1;
+                       b=(1-luminosity)*b+2*luminosity-1;
+               }
+               return new dojox.color.Color({ r:Math.round(r*255), g:Math.round(g*255), b:Math.round(b*255) });        //      dojox.color.Color
+       },
+       
+       fromHsv: function(/* Object|Array|int */hue, /* int */saturation, /* int */value){
+               //      summary
+               //      Create a dojox.color.Color from an HSV defined color.
+               //      hue from 0-359 (degrees), saturation and value 0-100.
+
+               if(dojo.isArray(hue)){
+                       saturation=hue[1], value=hue[2], hue=hue[0];
+               } else if (dojo.isObject(hue)){
+                       saturation=hue.s, value=hue.v, hue=hue.h;
+               }
+               
+               if(hue==360){ hue=0; }
+               saturation/=100;
+               value/=100;
+               
+               var r, g, b;
+               if(saturation==0){
+                       r=value, b=value, g=value;
+               }else{
+                       var hTemp=hue/60, i=Math.floor(hTemp), f=hTemp-i;
+                       var p=value*(1-saturation);
+                       var q=value*(1-(saturation*f));
+                       var t=value*(1-(saturation*(1-f)));
+                       switch(i){
+                               case 0:{ r=value, g=t, b=p; break; }
+                               case 1:{ r=q, g=value, b=p; break; }
+                               case 2:{ r=p, g=value, b=t; break; }
+                               case 3:{ r=p, g=q, b=value; break; }
+                               case 4:{ r=t, g=p, b=value; break; }
+                               case 5:{ r=value, g=p, b=q; break; }
+                       }
+               }
+               return new dojox.color.Color({ r:Math.round(r*255), g:Math.round(g*255), b:Math.round(b*255) });        //      dojox.color.Color
+       }
+});
+
+//     Conversions directly on dojox.color.Color
+dojo.extend(dojox.color.Color, {
+       toCmy: function(){
+               //      summary
+               //      Convert this Color to a CMY definition.
+               var cyan=1-(this.r/255), magenta=1-(this.g/255), yellow=1-(this.b/255);
+               return { c:Math.round(cyan*100), m:Math.round(magenta*100), y:Math.round(yellow*100) };         //      Object
+       },
+       
+       toCmyk: function(){
+               //      summary
+               //      Convert this Color to a CMYK definition.
+               var cyan, magenta, yellow, black;
+               var r=this.r/255, g=this.g/255, b=this.b/255;
+               black = Math.min(1-r, 1-g, 1-b);
+               cyan = (1-r-black)/(1-black);
+               magenta = (1-g-black)/(1-black);
+               yellow = (1-b-black)/(1-black);
+               return { c:Math.round(cyan*100), m:Math.round(magenta*100), y:Math.round(yellow*100), b:Math.round(black*100) };        //      Object
+       },
+       
+       toHsl: function(){
+               //      summary
+               //      Convert this Color to an HSL definition.
+               var r=this.r/255, g=this.g/255, b=this.b/255;
+               var min = Math.min(r, b, g), max = Math.max(r, g, b);
+               var delta = max-min;
+               var h=0, s=0, l=(min+max)/2;
+               if(l>0 && l<1){
+                       s = delta/((l<0.5)?(2*l):(2-2*l));
+               }
+               if(delta>0){
+                       if(max==r && max!=g){
+                               h+=(g-b)/delta;
+                       }
+                       if(max==g && max!=b){
+                               h+=(2+(b-r)/delta);
+                       }
+                       if(max==b && max!=r){
+                               h+=(4+(r-g)/delta);
+                       }
+                       h*=60;
+               }
+               return { h:h, s:Math.round(s*100), l:Math.round(l*100) };       //      Object
+       },
+
+       toHsv: function(){
+               //      summary
+               //      Convert this Color to an HSV definition.
+               var r=this.r/255, g=this.g/255, b=this.b/255;
+               var min = Math.min(r, b, g), max = Math.max(r, g, b);
+               var delta = max-min;
+               var h = null, s = (max==0)?0:(delta/max);
+               if(s==0){
+                       h = 0;
+               }else{
+                       if(r==max){
+                               h = 60*(g-b)/delta;
+                       }else if(g==max){
+                               h = 120 + 60*(b-r)/delta;
+                       }else{
+                               h = 240 + 60*(r-g)/delta;
+                       }
+
+                       if(h<0){ h+=360; }
+               }
+               return { h:h, s:Math.round(s*100), v:Math.round(max*100) };     //      Object
+       }
+});
+
+}