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237 lines
6.5 KiB
JavaScript
237 lines
6.5 KiB
JavaScript
/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojo.colors"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dojo.colors"] = true;
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dojo.provide("dojo.colors");
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//TODO: this module appears to break naming conventions
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/*=====
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dojo.colors = {
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// summary: Color utilities
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}
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=====*/
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(function(){
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// this is a standard conversion prescribed by the CSS3 Color Module
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var hue2rgb = function(m1, m2, h){
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if(h < 0){ ++h; }
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if(h > 1){ --h; }
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var h6 = 6 * h;
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if(h6 < 1){ return m1 + (m2 - m1) * h6; }
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if(2 * h < 1){ return m2; }
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if(3 * h < 2){ return m1 + (m2 - m1) * (2 / 3 - h) * 6; }
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return m1;
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};
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dojo.colorFromRgb = function(/*String*/ color, /*dojo.Color?*/ obj){
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// summary:
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// get rgb(a) array from css-style color declarations
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// description:
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// this function can handle all 4 CSS3 Color Module formats: rgb,
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// rgba, hsl, hsla, including rgb(a) with percentage values.
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var m = color.toLowerCase().match(/^(rgba?|hsla?)\(([\s\.\-,%0-9]+)\)/);
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if(m){
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var c = m[2].split(/\s*,\s*/), l = c.length, t = m[1], a;
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if((t == "rgb" && l == 3) || (t == "rgba" && l == 4)){
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var r = c[0];
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if(r.charAt(r.length - 1) == "%"){
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// 3 rgb percentage values
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a = dojo.map(c, function(x){
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return parseFloat(x) * 2.56;
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});
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if(l == 4){ a[3] = c[3]; }
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return dojo.colorFromArray(a, obj); // dojo.Color
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}
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return dojo.colorFromArray(c, obj); // dojo.Color
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}
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if((t == "hsl" && l == 3) || (t == "hsla" && l == 4)){
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// normalize hsl values
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var H = ((parseFloat(c[0]) % 360) + 360) % 360 / 360,
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S = parseFloat(c[1]) / 100,
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L = parseFloat(c[2]) / 100,
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// calculate rgb according to the algorithm
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// recommended by the CSS3 Color Module
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m2 = L <= 0.5 ? L * (S + 1) : L + S - L * S,
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m1 = 2 * L - m2;
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a = [
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hue2rgb(m1, m2, H + 1 / 3) * 256,
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hue2rgb(m1, m2, H) * 256,
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hue2rgb(m1, m2, H - 1 / 3) * 256,
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1
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];
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if(l == 4){ a[3] = c[3]; }
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return dojo.colorFromArray(a, obj); // dojo.Color
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}
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}
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return null; // dojo.Color
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};
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var confine = function(c, low, high){
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// summary:
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// sanitize a color component by making sure it is a number,
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// and clamping it to valid values
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c = Number(c);
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return isNaN(c) ? high : c < low ? low : c > high ? high : c; // Number
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};
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dojo.Color.prototype.sanitize = function(){
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// summary: makes sure that the object has correct attributes
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var t = this;
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t.r = Math.round(confine(t.r, 0, 255));
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t.g = Math.round(confine(t.g, 0, 255));
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t.b = Math.round(confine(t.b, 0, 255));
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t.a = confine(t.a, 0, 1);
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return this; // dojo.Color
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};
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})();
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dojo.colors.makeGrey = function(/*Number*/ g, /*Number?*/ a){
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// summary: creates a greyscale color with an optional alpha
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return dojo.colorFromArray([g, g, g, a]);
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};
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// mixin all CSS3 named colors not already in _base, along with SVG 1.0 variant spellings
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dojo.mixin(dojo.Color.named, {
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aliceblue: [240,248,255],
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antiquewhite: [250,235,215],
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aquamarine: [127,255,212],
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azure: [240,255,255],
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beige: [245,245,220],
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bisque: [255,228,196],
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blanchedalmond: [255,235,205],
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blueviolet: [138,43,226],
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brown: [165,42,42],
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burlywood: [222,184,135],
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cadetblue: [95,158,160],
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chartreuse: [127,255,0],
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chocolate: [210,105,30],
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coral: [255,127,80],
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cornflowerblue: [100,149,237],
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cornsilk: [255,248,220],
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crimson: [220,20,60],
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cyan: [0,255,255],
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darkblue: [0,0,139],
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darkcyan: [0,139,139],
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darkgoldenrod: [184,134,11],
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darkgray: [169,169,169],
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darkgreen: [0,100,0],
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darkgrey: [169,169,169],
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darkkhaki: [189,183,107],
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darkmagenta: [139,0,139],
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darkolivegreen: [85,107,47],
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darkorange: [255,140,0],
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darkorchid: [153,50,204],
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darkred: [139,0,0],
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darksalmon: [233,150,122],
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darkseagreen: [143,188,143],
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darkslateblue: [72,61,139],
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darkslategray: [47,79,79],
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darkslategrey: [47,79,79],
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darkturquoise: [0,206,209],
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darkviolet: [148,0,211],
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deeppink: [255,20,147],
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deepskyblue: [0,191,255],
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dimgray: [105,105,105],
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dimgrey: [105,105,105],
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dodgerblue: [30,144,255],
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firebrick: [178,34,34],
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floralwhite: [255,250,240],
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forestgreen: [34,139,34],
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gainsboro: [220,220,220],
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ghostwhite: [248,248,255],
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gold: [255,215,0],
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goldenrod: [218,165,32],
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greenyellow: [173,255,47],
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grey: [128,128,128],
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honeydew: [240,255,240],
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hotpink: [255,105,180],
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indianred: [205,92,92],
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indigo: [75,0,130],
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ivory: [255,255,240],
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khaki: [240,230,140],
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lavender: [230,230,250],
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lavenderblush: [255,240,245],
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lawngreen: [124,252,0],
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lemonchiffon: [255,250,205],
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lightblue: [173,216,230],
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lightcoral: [240,128,128],
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lightcyan: [224,255,255],
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lightgoldenrodyellow: [250,250,210],
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lightgray: [211,211,211],
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lightgreen: [144,238,144],
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lightgrey: [211,211,211],
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lightpink: [255,182,193],
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lightsalmon: [255,160,122],
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lightseagreen: [32,178,170],
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lightskyblue: [135,206,250],
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lightslategray: [119,136,153],
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lightslategrey: [119,136,153],
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lightsteelblue: [176,196,222],
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lightyellow: [255,255,224],
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limegreen: [50,205,50],
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linen: [250,240,230],
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magenta: [255,0,255],
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mediumaquamarine: [102,205,170],
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mediumblue: [0,0,205],
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mediumorchid: [186,85,211],
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mediumpurple: [147,112,219],
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mediumseagreen: [60,179,113],
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mediumslateblue: [123,104,238],
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mediumspringgreen: [0,250,154],
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mediumturquoise: [72,209,204],
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mediumvioletred: [199,21,133],
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midnightblue: [25,25,112],
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mintcream: [245,255,250],
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mistyrose: [255,228,225],
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moccasin: [255,228,181],
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navajowhite: [255,222,173],
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oldlace: [253,245,230],
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olivedrab: [107,142,35],
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orange: [255,165,0],
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orangered: [255,69,0],
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orchid: [218,112,214],
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palegoldenrod: [238,232,170],
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palegreen: [152,251,152],
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paleturquoise: [175,238,238],
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palevioletred: [219,112,147],
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papayawhip: [255,239,213],
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peachpuff: [255,218,185],
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peru: [205,133,63],
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pink: [255,192,203],
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plum: [221,160,221],
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powderblue: [176,224,230],
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rosybrown: [188,143,143],
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royalblue: [65,105,225],
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saddlebrown: [139,69,19],
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salmon: [250,128,114],
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sandybrown: [244,164,96],
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seagreen: [46,139,87],
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seashell: [255,245,238],
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sienna: [160,82,45],
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skyblue: [135,206,235],
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slateblue: [106,90,205],
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slategray: [112,128,144],
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slategrey: [112,128,144],
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snow: [255,250,250],
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springgreen: [0,255,127],
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steelblue: [70,130,180],
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tan: [210,180,140],
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thistle: [216,191,216],
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tomato: [255,99,71],
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transparent: [0, 0, 0, 0],
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turquoise: [64,224,208],
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violet: [238,130,238],
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wheat: [245,222,179],
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whitesmoke: [245,245,245],
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yellowgreen: [154,205,50]
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});
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}
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