/*
 * jQuery Color Animations Kai
 * Copyright 2009 y@s
 * Released under the MIT and GPL licenses.
 */


// jQuery Color Animations
// By John Resig

//revision
//http://yas-hummingbird.blogspot.com/2009/04/jquery-color.html

(function($){
	$.extend({
		getCodeFromRgb:function(rgb){
			return ((((1 << 8) + rgb[0] << 8) + rgb[1] << 8) + rgb[2]).toString(16).replace(/^1/, '#');
		},
		modifyBrightness:function(color, p) {
			var rgb = $.getRGB(color);
			var n = 0;
			
			if (n = /^(\d+)%$/.exec(p)) { //example: 150%, 50%
				n = parseInt(n[1]);
				for (var i = 0; i < rgb.length; i++) 
					rgb[i] = parseInt((rgb[i] / 100) * n);
			}
			else {
				if (+p == p) { //example: -20, +30
					n = p; 
				}
				else 
					if (n = /^([\+-])=(\d+)$/.exec(p)) { //example: +=20, -=100
						n = parseInt(n[1] + n[2]); 
					}
				
				for (var i = 0; i < rgb.length; i++) 
						rgb[i] = parseInt(rgb[i] + n);
			}
			
			for(var i = 0;i < rgb.length;i++){
				rgb[i] = rgb[i] < 0 || isNaN(rgb[i]) ? 0 : rgb[i] > 255 ? 255 : rgb[i];
			}
			
			return $.getCodeFromRgb(rgb);
		},
		
		
		// Color Conversion functions from highlightFade
		// By Blair Mitchelmore
		// http://jquery.offput.ca/highlightFade/
	
		// Parse strings looking for color tuples [255,255,255]
		getRGB:function(color) {
			var result;
	
			// Check if we're already dealing with an array of colors
			if ( color && color.constructor == Array && color.length == 3 )
				return color;
	
			// rgb(num,num,num)
			if (result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(color))
				return [parseInt(result[1]), parseInt(result[2]), parseInt(result[3])];
	
			// rgb(num%,num%,num%)
			if (result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(color))
				return [parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55];
	
			// #a0b1c2
			if (result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(color))
				return [parseInt(result[1],16), parseInt(result[2],16), parseInt(result[3],16)];
	
			// #fff
			if (result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(color))
				return [parseInt(result[1]+result[1],16), parseInt(result[2]+result[2],16), parseInt(result[3]+result[3],16)];
	
			// Otherwise, we're most likely dealing with a named color
			return knownColors[$.trim(color).toLowerCase()];
		},
		
		getColor:function(elem, attr) {
			var color;
			do {
				color = $.curCSS(elem, attr);
				// Keep going until we find an element that has color, or we hit the body
				if ( color != '' && color != 'transparent' || $.nodeName(elem, "body") )
					break; 
	
				attr = "backgroundColor";
			} while ( elem = elem.parentNode );
			
			return color;
		}
	});
	
	
	// Some named colors to work with
	// From Interface by Stefan Petre
	// http://interface.eyecon.ro/
	var colors = {
		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],
		darkgray:[169,169,169], //darkgrey -> darkgray
		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]
	};
	
	//add new colors
	var knownColors = $.extend({
		aliceblue:[240, 248, 255],
		antiquewhite:[250, 235, 215],
		aquamarine:[127, 255, 212],
		bisque:[255, 228, 196],
		blanchedalmond:[255, 235, 205],
		blueviolet:[138, 43, 226],
		burlywood:[222, 184, 135],
		cadetblue:[95, 158, 160],
		chartreuse:[127, 255, 0],
		chocolate:[210, 105, 30],
		coral:[255, 127, 80],
		cornflowerblue:[100, 149, 237],
		cornsilk:[255, 248, 220],
		crimson:[220, 20, 60],
		darkgoldenrod:[184, 134, 11],
		darkseagreen:[143, 188, 143],
		darkslateblue:[72, 61, 139],
		darkslategray:[47, 79, 79],
		darkturquoise:[0, 206, 209],
		deeppink:[255, 20, 147],
		deepskyblue:[0, 191, 255],
		dimgray:[105, 105, 105],
		dodgerblue:[30, 144, 255],
		feldspar:[209, 146, 117],
		firebrick:[178, 34, 34],
		floralwhite:[255, 250, 240],
		forestgreen:[34, 139, 34],
		gainsboro:[220, 220, 220],
		ghostwhite:[248, 248, 255],
		goldenrod:[218, 165, 32],
		gray:[128, 128, 128],
		greenyellow:[173, 255, 47],
		honeydew:[240, 255, 240],
		hotpink:[255, 105, 180],
		indianred:[205, 92, 92],
		ivory:[255, 255, 240],
		lavender:[230, 230, 250],
		lavenderblush:[255, 240, 245],
		lawngreen:[124, 252, 0],
		lemonchiffon:[255, 250, 205],
		lightcoral:[240, 128, 128],
		lightgoldenrodyellow:[250, 250, 210],
		lightsalmon:[255, 160, 122],
		lightseagreen:[32, 178, 170],
		lightskyblue:[135, 206, 250],
		lightslateblue:[132, 112, 255],
		lightslategray:[119, 136, 153],
		lightsteelblue:[176, 196, 222],
		limegreen:[50, 205, 50],
		linen:[250, 240, 230],
		mediumaquamarine:[102, 205, 170],
		mediumblue:[0, 0, 205],
		mediumorchid:[186, 85, 211],
		mediumpurple:[147, 112, 216],
		mediumseagreen:[60, 179, 113],
		mediumslateblue:[123, 104, 238],
		mediumspringgreen:[0, 250, 154],
		mediumturquoise:[72, 209, 204],
		mediumvioletred:[199, 21, 133],
		midnightblue:[25, 25, 112],
		mintcream:[245, 255, 250],
		mistyrose:[255, 228, 225],
		moccasin:[255, 228, 181],
		navajowhite:[255, 222, 173],
		oldlace:[253, 245, 230],
		olivedrab:[107, 142, 35],
		orangered:[255, 69, 0],
		orchid:[218, 112, 214],
		palegoldenrod:[238, 232, 170],
		palegreen:[152, 251, 152],
		paleturquoise:[175, 238, 238],
		palevioletred:[216, 112, 147],
		papayawhip:[255, 239, 213],
		peachpuff:[255, 218, 185],
		peru:[205, 133, 63],
		plum:[221, 160, 221],
		powderblue:[176, 224, 230],
		rosybrown:[188, 143, 143],
		royalblue:[65, 105, 225],
		saddlebrown:[139, 69, 19],
		salmon:[250, 128, 114],
		sandybrown:[244, 164, 96],
		seagreen:[46, 139, 87],
		seashell:[255, 245, 238],
		sienna:[160, 82, 45],
		skyblue:[135, 206, 235],
		slateblue:[106, 90, 205],
		slategray:[112, 128, 144],
		snow:[255, 250, 250],
		springgreen:[0, 255, 127],
		steelblue:[70, 130, 180],
		tan:[210, 180, 140],
		teal:[0, 128, 128],
		thistle:[216, 191, 216],
		tomato:[255, 99, 71],
		turquoise:[64, 224, 208],
		violetred:[208, 32, 144],
		wheat:[245, 222, 179],
		whitesmoke:[245, 245, 245],
		yellowgreen:[154, 205, 50]
	},colors);
	
	// We override the animation for all of these color styles
	$.each(['backgroundColor', 'borderBottomColor', 'borderLeftColor', 'borderRightColor', 'borderTopColor', 'color', 'outlineColor'], function(i,attr){
		$.fx.step[attr] = function(fx){
			if ( fx.state == 0 ) {
				fx.start = $.getRGB( $.getColor( fx.elem, attr ) );
				fx.end = $.getRGB( fx.end );
			}
	
			fx.elem.style[attr] = "rgb(" + [
				Math.max(Math.min( parseInt((fx.pos * (fx.end[0] - fx.start[0])) + fx.start[0]), 255), 0),
				Math.max(Math.min( parseInt((fx.pos * (fx.end[1] - fx.start[1])) + fx.start[1]), 255), 0),
				Math.max(Math.min( parseInt((fx.pos * (fx.end[2] - fx.start[2])) + fx.start[2]), 255), 0)
			].join(",") + ")";
		}
	});
})(jQuery);