/*

 * jQuery Color Animations

 * Copyright 2007 John Resig

 * Released under the MIT and GPL licenses.

 */



(function(jQuery){



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

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

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

            if ( fx.state == 0 ) {

                fx.start = 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(",") + ")";

        }

    });



    // Color Conversion functions from highlightFade

    // By Blair Mitchelmore

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



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

    function getRGB(color) {

        var result;



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

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

            return color;



        // Look for 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])];



        // Look for 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];



        // Look for #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)];



        // Look for #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)];



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

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

            return colors['transparent'];



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

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

    }



    function getColor(elem, attr) {

        var color;



        do {

            color = jQuery.curCSS(elem, attr);



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

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

                break;



            attr = "backgroundColor";

        } while ( elem = elem.parentNode );



        return getRGB(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],

        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],

        transparent: [255,255,255]

    };



})(jQuery);