resources/jquery/jquery.color.js

   1 /**
   2  * jQuery Color Animations
   3  * Copyright 2007 John Resig
   4  * Released under the MIT and GPL licenses.
   5  *
   6  * - 2011-01-05: Modified by Krinkle to use the jQuery.colorUtil plugin (which has to be loaded first!)
   7  */
   8 (function( $ ) {
   9
  10         // We override the animation for all of these color styles
  11         $.each(['backgroundColor', 'borderBottomColor', 'borderLeftColor', 'borderRightColor', 'borderTopColor', 'color', 'outlineColor'],
  12                 function( i, attr ) {
  13                         $.fx.step[attr] = function( fx ) {
  14                                 if ( fx.state == 0 ) {
  15                                         fx.start = getColor( fx.elem, attr );
  16                                         fx.end = $.colorUtil.getRGB( fx.end );
  17                                 }
  18
  19                                 fx.elem.style[attr] = 'rgb(' + [
  20                                         Math.max(Math.min( parseInt((fx.pos * (fx.end[0] - fx.start[0])) + fx.start[0]), 255), 0),
  21                                         Math.max(Math.min( parseInt((fx.pos * (fx.end[1] - fx.start[1])) + fx.start[1]), 255), 0),
  22                                         Math.max(Math.min( parseInt((fx.pos * (fx.end[2] - fx.start[2])) + fx.start[2]), 255), 0)
  23                                 ].join( ',' ) + ')';
  24                         }
  25                 }
  26         );
  27
  28         function getColor(elem, attr) {
  29                 var color;
  30
  31                 do {
  32                         color = $.curCSS(elem, attr);
  33
  34                         // Keep going until we find an element that has color, or we hit the body
  35                         if ( color != '' && color != 'transparent' || $.nodeName(elem, 'body') )
  36                                 break;
  37
  38                         attr = 'backgroundColor';
  39                 } while ( elem = elem.parentNode );
  40
  41                 return $.colorUtil.getRGB(color);
  42         };
  43
  44 } )( jQuery );