21 lines
3.5 KiB
JavaScript
21 lines
3.5 KiB
JavaScript
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/* Plugin for jQuery for working with colors.
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*
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* Version 1.1.
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*
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* Inspiration from jQuery color animation plugin by John Resig.
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*
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* Released under the MIT license by Ole Laursen, October 2009.
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*
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* Examples:
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*
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* $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
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* var c = $.color.extract($("#mydiv"), 'background-color');
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* console.log(c.r, c.g, c.b, c.a);
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* $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
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*
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* Note that .scale() and .add() return the same modified object
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* instead of making a new one.
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*
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* V. 1.1: Fix error handling so e.g. parsing an empty string does
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* produce a color rather than just crashing.
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*/(function(e){e.color={},e.color.make=function(t,n,r,i){var s={};return s.r=t||0,s.g=n||0,s.b=r||0,s.a=i!=null?i:1,s.add=function(e,t){for(var n=0;n<e.length;++n)s[e.charAt(n)]+=t;return s.normalize()},s.scale=function(e,t){for(var n=0;n<e.length;++n)s[e.charAt(n)]*=t;return s.normalize()},s.toString=function(){return s.a>=1?"rgb("+[s.r,s.g,s.b].join(",")+")":"rgba("+[s.r,s.g,s.b,s.a].join(",")+")"},s.normalize=function(){function e(e,t,n){return t<e?e:t>n?n:t}return s.r=e(0,parseInt(s.r),255),s.g=e(0,parseInt(s.g),255),s.b=e(0,parseInt(s.b),255),s.a=e(0,s.a,1),s},s.clone=function(){return e.color.make(s.r,s.b,s.g,s.a)},s.normalize()},e.color.extract=function(t,n){var r;do{r=t.css(n).toLowerCase();if(r!=""&&r!="transparent")break;t=t.parent()}while(!e.nodeName(t.get(0),"body"));return r=="rgba(0, 0, 0, 0)"&&(r="transparent"),e.color.parse(r)},e.color.parse=function(n){var r,i=e.color.make;if(r=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(n))return i(parseInt(r[1],10),parseInt(r[2],10),parseInt(r[3],10));if(r=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(n))return i(parseInt(r[1],10),parseInt(r[2],10),parseInt(r[3],10),parseFloat(r[4]));if(r=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(n))return i(parseFloat(r[1])*2.55,parseFloat(r[2])*2.55,parseFloat(r[3])*2.55);if(r=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(n))return i(parseFloat(r[1])*2.55,parseFloat(r[2])*2.55,parseFloat(r[3])*2.55,parseFloat(r[4]));if(r=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(n))return i(parseInt(r[1],16),parseInt(r[2],16),parseInt(r[3],16));if(r=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(n))return i(parseInt(r[1]+r[1],16),parseInt(r[2]+r[2],16),parseInt(r[3]+r[3],16));var s=e.trim(n).toLowerCase();return s=="transparent"?i(255,255,255,0):(r=t[s]||[0,0,0],i(r[0],r[1],r[2]))};var t={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery);
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