resources/jquery/jquery.color.js

   1 /**
   2  * jQuery Color Animations
   3  *
   4  * @author John Resig, 2007
   5  * @author Krinkle, 2011
   6  * Released under the MIT and GPL licenses.
   7  *
   8  * - 2011-01-05: Forked for MediaWiki. See also jQuery.colorUtil plugin
   9  */
  10 ( function ( $ ) {
  11
  12         function getColor( elem, attr ) {
  13                 /*jshint boss:true */
  14                 var color;
  15
  16                 do {
  17                         color = $.curCSS( elem, attr );
  18
  19                         // Keep going until we find an element that has color, or we hit the body
  20                         if ( color !== '' && color !== 'transparent' || $.nodeName( elem, 'body' ) ) {
  21                                 break;
  22                         }
  23
  24                         attr = 'backgroundColor';
  25                 } while ( elem = elem.parentNode );
  26
  27                 return $.colorUtil.getRGB( color );
  28         }
  29
  30         // We override the animation for all of these color styles
  31         $.each([
  32                 'backgroundColor',
  33                 'borderBottomColor',
  34                 'borderLeftColor',
  35                 'borderRightColor',
  36                 'borderTopColor',
  37                 'color',
  38                 'outlineColor'
  39         ], function ( i, attr ) {
  40                 $.fx.step[attr] = function ( fx ) {
  41                         if ( fx.state === 0 ) {
  42                                 fx.start = getColor( fx.elem, attr );
  43                                 fx.end = $.colorUtil.getRGB( fx.end );
  44                         }
  45
  46                         fx.elem.style[attr] = 'rgb(' + [
  47                                 Math.max( Math.min( parseInt( (fx.pos * (fx.end[0] - fx.start[0])) + fx.start[0], 10 ), 255 ), 0 ),
  48                                 Math.max( Math.min( parseInt( (fx.pos * (fx.end[1] - fx.start[1])) + fx.start[1], 10 ), 255 ), 0 ),
  49                                 Math.max( Math.min( parseInt( (fx.pos * (fx.end[2] - fx.start[2])) + fx.start[2], 10 ), 255 ), 0 )
  50                         ].join( ',' ) + ')';
  51                 };
  52         } );
  53
  54 }( jQuery ) );