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/*
* jQuery Color Animations v@VERSION
* http://jquery.org/
*
* Copyright 2011 John Resig
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*
* Date: @DATE
*/
(function( jQuery, undefined ){
var stepHooks = "backgroundColor borderBottomColor borderLeftColor borderRightColor borderTopColor color outlineColor".split(" "),
// plusequals test for += 100 -= 100
rplusequals = /^([\-+])=\s*(\d+\.?\d*)/,
// a set of RE's that can match strings and generate color tuples.
stringParsers = [{
re: /rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/,
parse: function( execResult ) {
return [
execResult[ 1 ],
execResult[ 2 ],
execResult[ 3 ],
execResult[ 4 ]
];
}
}, {
re: /rgba?\(\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/,
parse: function( execResult ) {
return [
2.55 * execResult[1],
2.55 * execResult[2],
2.55 * execResult[3],
execResult[ 4 ]
];
}
}, {
re: /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/,
parse: function( execResult ) {
return [
parseInt( execResult[ 1 ], 16 ),
parseInt( execResult[ 2 ], 16 ),
parseInt( execResult[ 3 ], 16 )
];
}
}, {
re: /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/,
parse: function( execResult ) {
return [
parseInt( execResult[ 1 ] + execResult[ 1 ], 16 ),
parseInt( execResult[ 2 ] + execResult[ 2 ], 16 ),
parseInt( execResult[ 3 ] + execResult[ 3 ], 16 )
];
}
}, {
re: /hsla?\(\s*(\d+(?:\.\d+)?)\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/,
space: "hsla",
parse: function( execResult ) {
return [
execResult[1],
execResult[2] / 100,
execResult[3] / 100,
execResult[4]
];
}
}],
// jQuery.Color( )
color = jQuery.Color = function( color, green, blue, alpha ) {
return new jQuery.Color.fn.parse( color, green, blue, alpha );
},
spaces = {
rgba: {
cache: "_rgba",
props: {
red: {
idx: 0,
type: "byte",
empty: true
},
green: {
idx: 1,
type: "byte",
empty: true
},
blue: {
idx: 2,
type: "byte",
empty: true
},
alpha: {
idx: 3,
type: "percent",
def: 1
}
}
},
hsla: {
cache: "_hsla",
props: {
hue: {
idx: 0,
type: "degrees",
empty: true
},
saturation: {
idx: 1,
type: "percent",
empty: true
},
lightness: {
idx: 2,
type: "percent",
empty: true
}
}
}
},
propTypes = {
"byte": {
floor: true,
min: 0,
max: 255
},
"percent": {
min: 0,
max: 1
},
"degrees": {
mod: 360,
floor: true
}
},
rgbaspace = spaces.rgba.props,
support = color.support = {},
// colors = jQuery.Color.names
colors,
// local aliases of functions called often
each = jQuery.each;
spaces.hsla.props.alpha = rgbaspace.alpha;
function clamp( value, prop, alwaysAllowEmpty ) {
var type = propTypes[ prop.type ] || {},
allowEmpty = prop.empty || alwaysAllowEmpty;
if ( allowEmpty && value == null ) {
return null;
}
if ( prop.def && value == null ) {
return prop.def;
}
if ( type.floor ) {
value = ~~value;
} else {
value = parseFloat( value );
}
if ( value == null || isNaN( value ) ) {
return prop.def;
}
if ( type.mod ) {
value = value % type.mod;
// -10 -> 350
return value < 0 ? type.mod + value : value;
}
// for now all property types without mod have min and max
return type.min > value ? type.min : type.max < value ? type.max : value;
}
color.fn = color.prototype = {
constructor: color,
parse: function( red, green, blue, alpha ) {
if ( red === undefined ) {
this._rgba = [ null, null, null, null ];
return this;
}
if ( red instanceof jQuery || red.nodeType ) {
red = red instanceof jQuery ? red.css( green ) : jQuery( red ).css( green );
green = undefined;
}
var inst = this,
type = jQuery.type( red ),
rgba = this._rgba = [],
source;
// more than 1 argument specified - assume ( red, green, blue, alpha )
if ( green !== undefined ) {
red = [ red, green, blue, alpha ];
type = "array";
}
if ( type === "string" ) {
red = red.toLowerCase();
each( stringParsers, function( i, parser ) {
var match = parser.re.exec( red ),
values = match && parser.parse( match ),
parsed,
spaceName = parser.space || "rgba",
cache = spaces[ spaceName ].cache;
if ( values ) {
parsed = inst[ spaceName ]( values );
// if this was an rgba parse the assignment might happen twice
// oh well....
inst[ cache ] = parsed[ cache ];
rgba = inst._rgba = parsed._rgba;
// exit each( stringParsers ) here because we matched
return false;
}
});
// Found a stringParser that handled it
if ( rgba.length !== 0 ) {
// if this came from a parsed string, force "transparent" when alpha is 0
// chrome, (and maybe others) return "transparent" as rgba(0,0,0,0)
if ( Math.max.apply( Math, rgba ) === 0 ) {
jQuery.extend( rgba, colors.transparent );
}
return this;
}
// named colors / default - filter back through parse function
red = colors[ red ] || colors._default;
return this.parse( red );
}
if ( type === "array" ) {
each( rgbaspace, function( key, prop ) {
rgba[ prop.idx ] = clamp( red[ prop.idx ], prop );
});
return this;
}
if ( type === "object" ) {
if ( red instanceof color ) {
each( spaces, function( spaceName, space ) {
if ( red[ space.cache ] ) {
inst[ space.cache ] = red[ space.cache ].slice();
}
});
} else {
each( spaces, function( spaceName, space ) {
each( space.props, function( key, prop ) {
var cache = space.cache;
// if the cache doesn't exist, and we know how to convert
if ( !inst[ cache ] && space.to ) {
// if the value was null, we don't need to copy it
// if the key was alpha, we don't need to copy it either
if ( red[ key ] == null || key === "alpha") {
return;
}
inst[ cache ] = space.to( inst._rgba );
}
// this is the only case where we allow nulls for ALL properties.
// call clamp with alwaysAllowEmpty
inst[ cache ][ prop.idx ] = clamp( red[ key ], prop, true );
});
});
}
return this;
}
},
is: function( compare ) {
var is = color( compare ),
same = true,
myself = this;
each( spaces, function( _, space ) {
var isCache = is[ space.cache ],
localCache;
if (isCache) {
localCache = myself[ space.cache ] || space.to && space.to( myself._rgba ) || [];
each( space.props, function( _, prop ) {
if ( isCache[ prop.idx ] != null ) {
same = ( isCache[ prop.idx ] == localCache[ prop.idx ] );
return same;
}
});
}
return same;
});
return same;
},
_space: function() {
var used = [],
inst = this;
each( spaces, function( spaceName, space ) {
if ( inst[ space.cache ] ) {
used.push( spaceName );
}
});
return used.pop();
},
transition: function( other, distance ) {
var end = color( other ),
spaceName = end._space(),
space = spaces[ spaceName ],
start = this[ space.cache ] || space.to( this._rgba ),
result = start.slice();
end = end[ space.cache ];
each( space.props, function( key, prop ) {
var index = prop.idx,
startValue = start[ index ],
endValue = end[ index ],
type = propTypes[ prop.type ] || {};
// if null, don't override start value
if ( endValue === null ) {
return;
}
// if null - use end
if ( startValue === null ) {
result[ index ] = endValue;
} else {
if ( type.mod ) {
if ( endValue - startValue > type.mod / 2 ) {
startValue += type.mod;
} else if ( startValue - endValue > type.mod / 2 ) {
startValue -= type.mod;
}
}
result[ prop.idx ] = clamp( ( endValue - startValue ) * distance + startValue, prop );
}
});
return this[ spaceName ]( result );
},
blend: function( opaque ) {
// if we are already opaque - return ourself
if ( this._rgba[ 3 ] === 1 ) {
return this;
}
var rgb = this._rgba.slice(),
a = rgb.pop(),
blend = color( opaque )._rgba;
return color( jQuery.map( rgb, function( v, i ) {
return ( 1 - a ) * blend[ i ] + a * v;
}));
},
toRgbaString: function() {
var prefix = "rgba(",
rgba = jQuery.map( this._rgba, function( v, i ) {
return v == null ? ( i > 2 ? 1 : 0 ) : v;
});
if ( rgba[ 3 ] === 1 ) {
rgba.pop();
prefix = "rgb(";
}
return prefix + rgba.join(",") + ")";
},
toHslaString: function() {
var prefix = "hsla(",
hsla = jQuery.map( this.hsla(), function( v, i ) {
if ( v == null ) {
v = i > 2 ? 1 : 0;
}
// catch 1 and 2
if ( i && i < 3 ) {
v = Math.round( v * 100 ) + "%";
}
return v;
});
if ( hsla[ 3 ] == 1 ) {
hsla.pop();
prefix = "hsl(";
}
return prefix + hsla.join(",") + ")";
},
toHexString: function( includeAlpha ) {
var rgba = this._rgba.slice(),
alpha = rgba.pop();
if ( includeAlpha ) {
rgba.push( ~~( alpha * 255 ) );
}
return "#" + jQuery.map( rgba, function( v, i ) {
// default to 0 when nulls exist
v = ( v || 0 ).toString( 16 );
return v.length == 1 ? "0" + v : v;
}).join("");
},
toString: function() {
return this._rgba[ 3 ] === 0 ? "transparent" : this.toRgbaString();
}
};
color.fn.parse.prototype = color.fn;
// hsla conversions adapted from:
// http://www.google.com/codesearch/p#OAMlx_jo-ck/src/third_party/WebKit/Source/WebCore/inspector/front-end/Color.js&d=7&l=193
function hue2rgb( p, q, h ) {
h = ( h + 1 ) % 1;
if ( h * 6 < 1 ) {
return p + (q - p) * 6 * h;
}
if ( h * 2 < 1) {
return q;
}
if ( h * 3 < 2 ) {
return p + (q - p) * ((2/3) - h) * 6;
}
return p;
}
spaces.hsla.to = function ( rgba ) {
if ( rgba[ 0 ] == null || rgba[ 1 ] == null || rgba[ 2 ] == null ) {
return [ null, null, null, rgba[ 3 ] ];
}
var r = rgba[ 0 ] / 255,
g = rgba[ 1 ] / 255,
b = rgba[ 2 ] / 255,
a = rgba[ 3 ],
max = Math.max( r, g, b ),
min = Math.min( r, g, b ),
diff = max - min,
add = max + min,
l = add * 0.5,
h, s;
if ( min === max ) {
h = 0;
} else if ( r === max ) {
h = ( 60 * ( g - b ) / diff ) + 360;
} else if ( g === max ) {
h = ( 60 * ( b - r ) / diff ) + 120;
} else {
h = ( 60 * ( r - g ) / diff ) + 240;
}
if ( l === 0 || l === 1 ) {
s = l;
} else if ( l <= 0.5 ) {
s = diff / add;
} else {
s = diff / ( 2 - add );
}
return [ Math.round(h) % 360, s, l, a == null ? 1 : a ];
};
spaces.hsla.from = function ( hsla ) {
if ( hsla[ 0 ] == null || hsla[ 1 ] == null || hsla[ 2 ] == null ) {
return [ null, null, null, hsla[ 3 ] ];
}
var h = hsla[ 0 ] / 360,
s = hsla[ 1 ],
l = hsla[ 2 ],
a = hsla[ 3 ],
q = l <= 0.5 ? l * ( 1 + s ) : l + s - l * s,
p = 2 * l - q,
r, g, b;
return [
Math.round( hue2rgb( p, q, h + ( 1 / 3 ) ) * 255 ),
Math.round( hue2rgb( p, q, h ) * 255 ),
Math.round( hue2rgb( p, q, h - ( 1 / 3 ) ) * 255 ),
a
];
};
each( spaces, function( spaceName, space ) {
var props = space.props,
cache = space.cache,
to = space.to,
from = space.from;
// makes rgba() and hsla()
color.fn[ spaceName ] = function( value ) {
// generate a cache for this space if it doesn't exist
if ( to && !this[ cache ] ) {
this[ cache ] = to( this._rgba );
}
if ( value === undefined ) {
return this[ cache ].slice();
}
var type = jQuery.type( value ),
arr = ( type === "array" || type === "object" ) ? value : arguments,
local = this[ cache ].slice(),
ret;
each( props, function( key, prop ) {
var val = arr[ type === "object" ? key : prop.idx ];
if ( val == null ) {
val = local[ prop.idx ];
}
local[ prop.idx ] = clamp( val, prop );
});
if ( from ) {
ret = color( from( local ) );
ret[ cache ] = local;
return ret;
} else {
return color( local );
}
};
// makes red() green() blue() alpha() hue() saturation() lightness()
each( props, function( key, prop ) {
// alpha is included in more than one space
if ( color.fn[ key ] ) {
return;
}
color.fn[ key ] = function( value ) {
var vtype = jQuery.type( value ),
fn = ( key === 'alpha' ? ( this._hsla ? 'hsla' : 'rgba' ) : spaceName ),
local = this[ fn ](),
cur = local[ prop.idx ],
match;
if ( vtype === "undefined" ) {
return cur;
}
if ( vtype === "function" ) {
value = value.call( this, cur );
vtype = jQuery.type( value );
}
if ( value == null && prop.empty ) {
return this;
}
if ( vtype === "string" ) {
match = rplusequals.exec( value );
if ( match ) {
value = cur + parseFloat( match[ 2 ] ) * ( match[ 1 ] === "+" ? 1 : -1 );
}
}
local[ prop.idx ] = value;
return this[ fn ]( local );
};
});
});
// add .fx.step functions
each( stepHooks, function( i, hook ) {
jQuery.cssHooks[ hook ] = {
set: function( elem, value ) {
value = color( value );
if ( !support.rgba && value._rgba[ 3 ] !== 1 ) {
var backgroundColor,
curElem = hook === "backgroundColor" ? elem.parentNode : elem;
do {
backgroundColor = jQuery.curCSS( curElem, "backgroundColor" );
} while (
( backgroundColor === "" || backgroundColor === "transparent" ) &&
( curElem = curElem.parentNode ) &&
curElem.style
);
value = value.blend( backgroundColor && backgroundColor !== "transparent" ?
backgroundColor :
"_default" );
}
value = value.toRgbaString();
elem.style[ hook ] = value;
}
};
jQuery.fx.step[ hook ] = function( fx ) {
if ( !fx.colorInit ) {
fx.start = color( fx.elem, hook );
fx.end = color( fx.end );
fx.colorInit = true;
}
jQuery.cssHooks[ hook ].set( fx.elem, fx.start.transition( fx.end, fx.pos ) );
};
});
// detect rgba support
jQuery(function() {
var div = document.createElement( "div" ),
div_style = div.style;
div_style.cssText = "background-color:rgba(1,1,1,.5)";
support.rgba = div_style.backgroundColor.indexOf( "rgba" ) > -1;
});
// Some named colors to work with
// From Interface by Stefan Petre
// http://interface.eyecon.ro/
colors = jQuery.Color.names = {
aqua: "#00ffff",
azure: "#f0ffff",
beige: "#f5f5dc",
black: "#000000",
blue: "#0000ff",
brown: "#a52a2a",
cyan: "#00ffff",
darkblue: "#00008b",
darkcyan: "#008b8b",
darkgrey: "#a9a9a9",
darkgreen: "#006400",
darkkhaki: "#bdb76b",
darkmagenta: "#8b008b",
darkolivegreen: "#556b2f",
darkorange: "#ff8c00",
darkorchid: "#9932cc",
darkred: "#8b0000",
darksalmon: "#e9967a",
darkviolet: "#9400d3",
fuchsia: "#ff00ff",
gold: "#ffd700",
green: "#008000",
indigo: "#4b0082",
khaki: "#f0e68c",
lightblue: "#add8e6",
lightcyan: "#e0ffff",
lightgreen: "#90ee90",
lightgrey: "#d3d3d3",
lightpink: "#ffb6c1",
lightyellow: "#ffffe0",
lime: "#00ff00",
magenta: "#ff00ff",
maroon: "#800000",
navy: "#000080",
olive: "#808000",
orange: "#ffa500",
pink: "#ffc0cb",
purple: "#800080",
violet: "#800080",
red: "#ff0000",
silver: "#c0c0c0",
white: "#ffffff",
yellow: "#ffff00",
transparent: [ null, null, null, 0 ],
_default: "#ffffff"
};
})( jQuery );