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/*! * jQuery Color Animations v2.0pre * http://jquery.org/ * * Copyright 2011 John Resig * Dual licensed under the MIT or GPL Version 2 licenses. * http://jquery.org/license */ (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; } function stringParse( string ) { var inst = color(), rgba = inst._rgba = []; string = string.toLowerCase(); each( stringParsers, function( i, parser ) { var match = parser.re.exec( string ), 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 inst; } // named colors / default - filter back through parse function if ( string = colors[ string ] ) { return string; } } 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" ) { return this.parse( stringParse( red ) || colors._default ); } 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 ) { var parsed, backgroundColor, curElem; if ( jQuery.type( value ) !== 'string' || ( parsed = stringParse( value ) ) ) { value = color( parsed || value ); if ( !support.rgba && value._rgba[ 3 ] !== 1 ) { 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 );