--- /dev/null
+if(!dojo._hasResource["dojox.color.Generator"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.color.Generator"] = true;
+dojo.provide("dojox.color.Generator");
+
+dojox.color.Generator = new (function(){
+ var dxc=dojox.color;
+
+ // common helper functions
+ var prep=function(obj){
+ if(!obj){
+ console.warn("dojox.color.Generator:: no base color was passed. ", obj);
+ return null;
+ }
+ if(!obj.toHsv){
+ // either a raw string or object, return a Color.
+ obj=new dxc.Color(obj);
+ }
+ return obj;
+ };
+
+ var factors=function(n, high, low){
+ var ret=[], i, step=(high-low)/n, cur=high;
+ for(i=0; i<n; i++,cur-=step){ ret.push(cur); }
+ return ret;
+ };
+
+ var fill=function(color, num, factors){
+ var c=factors.length-1, a=[], r, g, b;
+ for(var i=0; i<num; i++){
+ if(i<factors.length){
+ r=color.r+(255-color.r)*factors[i],
+ g=color.g+(255-color.g)*factors[i],
+ b=color.b+(255-color.b)*factors[i];
+ a.push(new dxc.Color({ r:r, g:g, b:b }));
+ }
+ else if(i==factors.length){
+ a.push(color);
+ }
+ else {
+ if(c<0){ c=factors.length-1; } // just in case.
+ r=color.r*(1-factors[c]),
+ g=color.g*(1-factors[c]),
+ b=color.b*(1-factors[c--]);
+ a.push(new dxc.Color({ r:r, g:g, b:b }));
+ }
+ }
+ return a;
+ };
+
+ var flatten=function(matrix, limit){
+ var ret=[];
+ for(var i=0; i<matrix[0].length; i++){
+ for(var j=0; j<matrix.length; j++){
+ ret.push(matrix[j][i]);
+ }
+ }
+ return ret.slice(0, limit);
+ };
+
+ // the color generator
+ this.analogous= function(/* Object */kwArgs){
+ // summary
+ // generates n colors based on a base color, based on a fixed hue angle delta
+ // (relative to the base hue) with slight variations in saturation.
+ kwArgs=dojo.mixin({
+ series:4, // number of analogous lines to generate
+ num:32, // number of colors to derive
+ angleHigh:30, // the angle of difference to use, subtracted
+ angleLow:8, // the angle of difference to use, added
+ high:0.5, // high part of range to generate tints and shades
+ low:0.15 // low part of range to generate tints and shades
+ }, kwArgs||{});
+
+ var base=prep(kwArgs.base, "analogous");
+ if(!base){ return []; }
+
+ // let start the generation. We use series to move further away from the center.
+ var num=kwArgs.num, hsv=base.toHsv();
+ var rows=kwArgs.series+1, cols=Math.ceil(num/rows);
+ var fs=factors(Math.floor(cols/2), kwArgs.high, kwArgs.low);
+
+ // generate the angle differences
+ var ang=[];
+ var gen=Math.floor(kwArgs.series/2);
+ for(var i=1; i<=gen; i++){
+ var a=hsv.h+((kwArgs.angleLow*i)+1);
+ if(a>=360){ a-=360; }
+ ang.push(a);
+ }
+ ang.push(0);
+ for(i=1; i<=gen; i++){
+ a=hsv.h-(kwArgs.angleHigh*i);
+ if(a<0){ a+=360; }
+ ang.push(a);
+ }
+
+ var m=[], cur=0;
+ for(i=0; i<rows; i++){
+ m.push(fill(dxc.fromHsv({ h: ang[cur++], s:hsv.s, v:hsv.v }), cols, fs));
+ }
+ return flatten(m, num); // Array
+ };
+
+ this.monochromatic = function(/* Object */kwArgs){
+ // summary
+ // generates n colors based on a base color, using alterations to the RGB model only.
+ kwArgs=dojo.mixin({
+ num:32, // number of colors to derive
+ high:0.5, // high factor to generate tints and shades
+ low:0.15 // low factor to generate tints and shades
+ }, kwArgs||{});
+
+ var base=prep(kwArgs.base, "monochromatic");
+ if(!base){ return []; }
+
+ var fs=factors(Math.floor(kwArgs.num/2), kwArgs.high, kwArgs.low);
+ var a=fill(base, kwArgs.num, fs);
+ return a; // Array
+ };
+
+ this.triadic = function(/* Object */kwArgs){
+ // summary
+ // generates n colors from a base color, using the triadic rules, rough
+ // approximation from kuler.adobe.com.
+ kwArgs=dojo.mixin({
+ num:32, // number of colors to derive
+ high:0.5, // high factor to generate tints and shades
+ low:0.15 // low factor to generate tints and shades
+ }, kwArgs||{});
+
+ var base=prep(kwArgs.base, "triadic");
+ if(!base){ return []; }
+
+ var num=kwArgs.num, rows=3, cols=Math.ceil(num/rows), fs=factors(Math.floor(cols/2), kwArgs.high, kwArgs.low);
+ var m=[], hsv=base.toHsv();
+
+ // hue calculations
+ var h1=hsv.h+57, h2=hsv.h-157;
+ if(h1>360){ h1-=360; }
+ if(h2<0){ h2+=360; }
+
+ // sat calculations
+ var s1=(hsv.s>=20) ? hsv.s-10 : hsv.s+10;
+ var s2=(hsv.s>=95) ? hsv.s-5 : hsv.s+5;
+
+ // value calcs
+ var v2=(hsv.v>=70) ? hsv.v-30 : hsv.v+30;
+
+ m.push(fill(dojox.color.fromHsv({ h:h1, s:s1, v:hsv.v }), cols, fs));
+ m.push(fill(base, cols, fs));
+ m.push(fill(dojox.color.fromHsv({ h:h2, s:s2, v:v2 }), cols, fs));
+ return flatten(m, num); // Array
+ };
+
+ this.complementary = function(/* Object */kwArgs){
+ // summary
+ // generates n colors from a base color, using complimentary rules.
+ kwArgs=dojo.mixin({
+ num:32, // number of colors to derive
+ high:0.5, // high factor to generate tints and shades
+ low:0.15 // low factor to generate tints and shades
+ }, kwArgs||{});
+
+ var base=prep(kwArgs.base, "complimentary");
+ if(!base){ return []; }
+
+ var num=kwArgs.num, rows=2, cols=Math.ceil(num/rows), fs=factors(Math.floor(cols/2), kwArgs.high, kwArgs.low);
+ var m=[], hsv=base.toHsv();
+ var compliment=(hsv.h+120)%360;
+ m.push(fill(base, cols, fs));
+ m.push(fill(dojox.color.fromHsv({ h:compliment, s:hsv.s, v:hsv.v }), cols, fs));
+ return flatten(m, num); // Array
+ };
+
+ this.splitComplementary = function(/* Object */kwArgs){
+ // summary
+ // generates n colors from a base color, using split complimentary rules.
+ kwArgs=dojo.mixin({
+ num:32, // number of colors to derive
+ angle:30, // the angle of difference to use
+ high:0.5, // high factor to generate tints and shades
+ low:0.15 // low factor to generate tints and shades
+ }, kwArgs||{});
+
+ var base=prep(kwArgs.base, "splitComplementary");
+ if(!base){ return []; }
+
+ var num=kwArgs.num, rows=3, cols=Math.ceil(num/rows), fs=factors(Math.floor(cols/2), kwArgs.high, kwArgs.low);
+ var m=[], hsv=base.toHsv();
+ var compliment=(hsv.h+120)%360;
+ var comp1=compliment-kwArgs.angle, comp2=(compliment+kwArgs.angle)%360;
+ if(comp1<0){ comp1+=360; }
+
+ m.push(fill(base, cols, fs));
+ m.push(fill(dojox.color.fromHsv({ h:comp1, s:hsv.s, v:hsv.v }), cols, fs));
+ m.push(fill(dojox.color.fromHsv({ h:comp2, s:hsv.s, v:hsv.v }), cols, fs));
+ return flatten(m, num); // Array
+ };
+
+ this.compound = function(/* Object */kwArgs){
+ // summary
+ // generates n colors from a base color, using a *very* rough approximation
+ // of the Compound rules at http://kuler.adobe.com
+ kwArgs=dojo.mixin({
+ num:32, // number of colors to derive
+ angle:30, // the angle of difference to use
+ high:0.5, // high factor to generate tints and shades
+ low:0.15 // low factor to generate tints and shades
+ }, kwArgs||{});
+
+ var base=prep(kwArgs.base, "compound");
+ if(!base){ return []; }
+
+ var num=kwArgs.num, rows=4, cols=Math.ceil(num/rows), fs=factors(Math.floor(cols/2), kwArgs.high, kwArgs.low);
+ var m=[], hsv=base.toHsv();
+ var comp=(hsv.h+120)%360; // other base angle.
+
+ // hue calculations
+ var h1=(hsv.h+kwArgs.angle)%360, h2=comp-kwArgs.angle, h3=comp-(kwArgs.angle/2);
+ if(h2<0){ h2+=360; }
+ if(h3<0){ h3+=360; }
+
+ // saturation calculations
+ var s1=(hsv.s>=90 && hsv.s<=100)? hsv.s-10 : hsv.s+10;
+ var s2=(hsv.s<=35) ? hsv.s+25 : hsv.s-25;
+
+ // value calculations
+ var v1=hsv.v-20;
+ var v2=hsv.v;
+
+ m.push(fill(base, cols, fs));
+ m.push(fill(dojox.color.fromHsv({ h:h1, s:s1, v:v1 }), cols, fs));
+ m.push(fill(dojox.color.fromHsv({ h:h2, s:s1, v:v1 }), cols, fs));
+ m.push(fill(dojox.color.fromHsv({ h:h3, s:s2, v:v2 }), cols, fs));
+ return flatten(m, num); // Array
+ };
+
+ this.shades = function(/* Object */kwArgs){
+ // summary
+ // generates n colors based on a base color using only changes
+ // in value. Similar to monochromatic but a bit more linear.
+ kwArgs=dojo.mixin({
+ num:32, // number of colors to derive
+ high:1.5, // high factor to generate tints and shades
+ low:0.5 // low factor to generate tints and shades
+ }, kwArgs||{});
+
+ var base=prep(kwArgs.base, "shades");
+ if(!base){ return []; }
+
+ var num=kwArgs.num, hsv=base.toHsv();
+ var step=(kwArgs.high-kwArgs.low)/num, cur=kwArgs.low;
+ var a=[];
+ for(var i=0; i<num; i++,cur+=step){
+ a.push(dxc.fromHsv({ h:hsv.h, s:hsv.s, v:Math.min(Math.round(hsv.v*cur),100) }));
+ }
+ return a; // Array
+ };
+})();
+
+}
projects / eow / blobdiff