1 /*

     2  * jQuery Color Animations

     3  * Copyright 2007 John Resig

     4  * Released under the MIT and GPL licenses.

     5  */

     6 

     7 (function(jQuery){

     8 

     9     // We override the animation for all of these color styles

    10     jQuery.each(['backgroundColor', 'borderBottomColor', 'borderLeftColor', 'borderRightColor', 'borderTopColor', 'color', 'outlineColor'], function(i,attr){

    11         jQuery.fx.step[attr] = function(fx){

    12             if ( fx.state == 0 ) {

    13                 fx.start = getColor( fx.elem, attr );

    14                 fx.end = getRGB( fx.end );

    15             }

    16 

    17             fx.elem.style[attr] = "rgb(" + [

    18                 Math.max(Math.min( parseInt((fx.pos * (fx.end[0] - fx.start[0])) + fx.start[0]), 255), 0),

    19                 Math.max(Math.min( parseInt((fx.pos * (fx.end[1] - fx.start[1])) + fx.start[1]), 255), 0),

    20                 Math.max(Math.min( parseInt((fx.pos * (fx.end[2] - fx.start[2])) + fx.start[2]), 255), 0)

    21             ].join(",") + ")";

    22         }

    23     });

    24 

    25     // Color Conversion functions from highlightFade

    26     // By Blair Mitchelmore

    27     // http://jquery.offput.ca/highlightFade/

    28 

    29     // Parse strings looking for color tuples [255,255,255]

    30     function getRGB(color) {

    31         var result;

    32 

    33         // Check if we're already dealing with an array of colors

    34         if ( color && color.constructor == Array && color.length == 3 )

    35             return color;

    36 

    37         // Look for rgb(num,num,num)

    38         if (result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(color))

    39             return [parseInt(result[1]), parseInt(result[2]), parseInt(result[3])];

    40 

    41         // Look for rgb(num%,num%,num%)

    42         if (result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(color))

    43             return [parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55];

    44 

    45         // Look for #a0b1c2

    46         if (result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(color))

    47             return [parseInt(result[1],16), parseInt(result[2],16), parseInt(result[3],16)];

    48 

    49         // Look for #fff

    50         if (result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(color))

    51             return [parseInt(result[1]+result[1],16), parseInt(result[2]+result[2],16), parseInt(result[3]+result[3],16)];

    52 

    53         // Look for rgba(0, 0, 0, 0) == transparent in Safari 3

    54         if (result = /rgba\(0, 0, 0, 0\)/.exec(color))

    55             return colors['transparent']

    56 

    57         // Otherwise, we're most likely dealing with a named color

    58         return colors[jQuery.trim(color).toLowerCase()];

    59     }

    60 

    61     function getColor(elem, attr) {

    62         var color;

    63 

    64         do {

    65             color = jQuery.curCSS(elem, attr);

    66 

    67             // Keep going until we find an element that has color, or we hit the body

    68             if ( color != '' && color != 'transparent' || jQuery.nodeName(elem, "body") )

    69                 break;

    70 

    71             attr = "backgroundColor";

    72         } while ( elem = elem.parentNode );

    73 

    74         return getRGB(color);

    75     };

    76 

    77     // Some named colors to work with

    78     // From Interface by Stefan Petre

    79     // http://interface.eyecon.ro/

    80 

    81     var colors = {

    82         aqua:[0,255,255],

    83         azure:[240,255,255],

    84         beige:[245,245,220],

    85         black:[0,0,0],

    86         blue:[0,0,255],

    87         brown:[165,42,42],

    88         cyan:[0,255,255],

    89         darkblue:[0,0,139],

    90         darkcyan:[0,139,139],

    91         darkgrey:[169,169,169],

    92         darkgreen:[0,100,0],

    93         darkkhaki:[189,183,107],

    94         darkmagenta:[139,0,139],

    95         darkolivegreen:[85,107,47],

    96         darkorange:[255,140,0],

    97         darkorchid:[153,50,204],

    98         darkred:[139,0,0],

    99         darksalmon:[233,150,122],

   100         darkviolet:[148,0,211],

   101         fuchsia:[255,0,255],

   102         gold:[255,215,0],

   103         green:[0,128,0],

   104         indigo:[75,0,130],

   105         khaki:[240,230,140],

   106         lightblue:[173,216,230],

   107         lightcyan:[224,255,255],

   108         lightgreen:[144,238,144],

   109         lightgrey:[211,211,211],

   110         lightpink:[255,182,193],

   111         lightyellow:[255,255,224],

   112         lime:[0,255,0],

   113         magenta:[255,0,255],

   114         maroon:[128,0,0],

   115         navy:[0,0,128],

   116         olive:[128,128,0],

   117         orange:[255,165,0],

   118         pink:[255,192,203],

   119         purple:[128,0,128],

   120         violet:[128,0,128],

   121         red:[255,0,0],

   122         silver:[192,192,192],

   123         white:[255,255,255],

   124         yellow:[255,255,0],

   125         transparent: [255,255,255]

   126     };

   127 

   128 })(jQuery);