662 lines
16 KiB
JavaScript
662 lines
16 KiB
JavaScript
/*!
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* jQuery Color Animations v2.0pre
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* http://jquery.org/
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*
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* Copyright 2011 John Resig
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* Dual licensed under the MIT or GPL Version 2 licenses.
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* http://jquery.org/license
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*/
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(function( jQuery, undefined ){
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var stepHooks = "backgroundColor borderBottomColor borderLeftColor borderRightColor borderTopColor color outlineColor".split(" "),
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// plusequals test for += 100 -= 100
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rplusequals = /^([\-+])=\s*(\d+\.?\d*)/,
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// a set of RE's that can match strings and generate color tuples.
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stringParsers = [{
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re: /rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/,
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parse: function( execResult ) {
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return [
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execResult[ 1 ],
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execResult[ 2 ],
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execResult[ 3 ],
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execResult[ 4 ]
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];
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}
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}, {
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re: /rgba?\(\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/,
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parse: function( execResult ) {
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return [
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2.55 * execResult[1],
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2.55 * execResult[2],
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2.55 * execResult[3],
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execResult[ 4 ]
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];
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}
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}, {
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re: /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/,
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parse: function( execResult ) {
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return [
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parseInt( execResult[ 1 ], 16 ),
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parseInt( execResult[ 2 ], 16 ),
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parseInt( execResult[ 3 ], 16 )
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];
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}
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}, {
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re: /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/,
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parse: function( execResult ) {
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return [
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parseInt( execResult[ 1 ] + execResult[ 1 ], 16 ),
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parseInt( execResult[ 2 ] + execResult[ 2 ], 16 ),
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parseInt( execResult[ 3 ] + execResult[ 3 ], 16 )
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];
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}
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}, {
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re: /hsla?\(\s*(\d+(?:\.\d+)?)\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d+(?:\.\d+)?)\s*)?\)/,
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space: "hsla",
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parse: function( execResult ) {
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return [
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execResult[1],
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execResult[2] / 100,
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execResult[3] / 100,
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execResult[4]
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];
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}
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}],
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// jQuery.Color( )
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color = jQuery.Color = function( color, green, blue, alpha ) {
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return new jQuery.Color.fn.parse( color, green, blue, alpha );
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},
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spaces = {
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rgba: {
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cache: "_rgba",
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props: {
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red: {
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idx: 0,
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type: "byte",
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empty: true
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},
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green: {
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idx: 1,
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type: "byte",
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empty: true
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},
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blue: {
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idx: 2,
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type: "byte",
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empty: true
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},
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alpha: {
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idx: 3,
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type: "percent",
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def: 1
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}
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}
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},
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hsla: {
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cache: "_hsla",
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props: {
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hue: {
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idx: 0,
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type: "degrees",
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empty: true
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},
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saturation: {
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idx: 1,
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type: "percent",
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empty: true
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},
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lightness: {
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idx: 2,
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type: "percent",
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empty: true
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}
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}
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}
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},
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propTypes = {
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"byte": {
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floor: true,
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min: 0,
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max: 255
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},
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"percent": {
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min: 0,
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max: 1
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},
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"degrees": {
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mod: 360,
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floor: true
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}
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},
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rgbaspace = spaces.rgba.props,
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support = color.support = {},
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// colors = jQuery.Color.names
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colors,
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// local aliases of functions called often
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each = jQuery.each;
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spaces.hsla.props.alpha = rgbaspace.alpha;
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function clamp( value, prop, alwaysAllowEmpty ) {
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var type = propTypes[ prop.type ] || {},
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allowEmpty = prop.empty || alwaysAllowEmpty;
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if ( allowEmpty && value == null ) {
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return null;
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}
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if ( prop.def && value == null ) {
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return prop.def;
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}
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if ( type.floor ) {
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value = ~~value;
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} else {
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value = parseFloat( value );
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}
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if ( value == null || isNaN( value ) ) {
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return prop.def;
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}
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if ( type.mod ) {
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value = value % type.mod;
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// -10 -> 350
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return value < 0 ? type.mod + value : value;
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}
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// for now all property types without mod have min and max
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return type.min > value ? type.min : type.max < value ? type.max : value;
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}
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function stringParse( string ) {
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var inst = color(),
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rgba = inst._rgba = [];
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string = string.toLowerCase();
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each( stringParsers, function( i, parser ) {
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var match = parser.re.exec( string ),
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values = match && parser.parse( match ),
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parsed,
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spaceName = parser.space || "rgba",
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cache = spaces[ spaceName ].cache;
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if ( values ) {
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parsed = inst[ spaceName ]( values );
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// if this was an rgba parse the assignment might happen twice
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// oh well....
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inst[ cache ] = parsed[ cache ];
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rgba = inst._rgba = parsed._rgba;
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// exit each( stringParsers ) here because we matched
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return false;
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}
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});
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// Found a stringParser that handled it
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if ( rgba.length !== 0 ) {
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// if this came from a parsed string, force "transparent" when alpha is 0
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// chrome, (and maybe others) return "transparent" as rgba(0,0,0,0)
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if ( Math.max.apply( Math, rgba ) === 0 ) {
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jQuery.extend( rgba, colors.transparent );
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}
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return inst;
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}
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// named colors / default - filter back through parse function
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if ( string = colors[ string ] ) {
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return string;
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}
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}
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color.fn = color.prototype = {
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constructor: color,
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parse: function( red, green, blue, alpha ) {
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if ( red === undefined ) {
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this._rgba = [ null, null, null, null ];
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return this;
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}
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if ( red instanceof jQuery || red.nodeType ) {
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red = red instanceof jQuery ? red.css( green ) : jQuery( red ).css( green );
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green = undefined;
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}
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var inst = this,
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type = jQuery.type( red ),
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rgba = this._rgba = [],
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source;
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// more than 1 argument specified - assume ( red, green, blue, alpha )
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if ( green !== undefined ) {
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red = [ red, green, blue, alpha ];
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type = "array";
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}
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if ( type === "string" ) {
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return this.parse( stringParse( red ) || colors._default );
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}
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if ( type === "array" ) {
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each( rgbaspace, function( key, prop ) {
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rgba[ prop.idx ] = clamp( red[ prop.idx ], prop );
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});
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return this;
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}
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if ( type === "object" ) {
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if ( red instanceof color ) {
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each( spaces, function( spaceName, space ) {
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if ( red[ space.cache ] ) {
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inst[ space.cache ] = red[ space.cache ].slice();
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}
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});
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} else {
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each( spaces, function( spaceName, space ) {
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each( space.props, function( key, prop ) {
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var cache = space.cache;
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// if the cache doesn't exist, and we know how to convert
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if ( !inst[ cache ] && space.to ) {
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// if the value was null, we don't need to copy it
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// if the key was alpha, we don't need to copy it either
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if ( red[ key ] == null || key === "alpha") {
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return;
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}
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inst[ cache ] = space.to( inst._rgba );
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}
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// this is the only case where we allow nulls for ALL properties.
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// call clamp with alwaysAllowEmpty
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inst[ cache ][ prop.idx ] = clamp( red[ key ], prop, true );
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});
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});
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}
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return this;
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}
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},
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is: function( compare ) {
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var is = color( compare ),
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same = true,
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myself = this;
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each( spaces, function( _, space ) {
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var isCache = is[ space.cache ],
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localCache;
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if (isCache) {
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localCache = myself[ space.cache ] || space.to && space.to( myself._rgba ) || [];
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each( space.props, function( _, prop ) {
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if ( isCache[ prop.idx ] != null ) {
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same = ( isCache[ prop.idx ] === localCache[ prop.idx ] );
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return same;
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}
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});
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}
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return same;
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});
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return same;
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},
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_space: function() {
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var used = [],
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inst = this;
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each( spaces, function( spaceName, space ) {
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if ( inst[ space.cache ] ) {
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used.push( spaceName );
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}
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});
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return used.pop();
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},
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transition: function( other, distance ) {
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var end = color( other ),
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spaceName = end._space(),
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space = spaces[ spaceName ],
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start = this[ space.cache ] || space.to( this._rgba ),
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result = start.slice();
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end = end[ space.cache ];
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each( space.props, function( key, prop ) {
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var index = prop.idx,
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startValue = start[ index ],
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endValue = end[ index ],
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type = propTypes[ prop.type ] || {};
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// if null, don't override start value
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if ( endValue === null ) {
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return;
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}
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// if null - use end
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if ( startValue === null ) {
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result[ index ] = endValue;
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} else {
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if ( type.mod ) {
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if ( endValue - startValue > type.mod / 2 ) {
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startValue += type.mod;
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} else if ( startValue - endValue > type.mod / 2 ) {
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startValue -= type.mod;
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}
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}
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result[ prop.idx ] = clamp( ( endValue - startValue ) * distance + startValue, prop );
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}
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});
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return this[ spaceName ]( result );
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},
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blend: function( opaque ) {
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// if we are already opaque - return ourself
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if ( this._rgba[ 3 ] === 1 ) {
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return this;
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}
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var rgb = this._rgba.slice(),
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a = rgb.pop(),
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blend = color( opaque )._rgba;
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return color( jQuery.map( rgb, function( v, i ) {
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return ( 1 - a ) * blend[ i ] + a * v;
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}));
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},
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toRgbaString: function() {
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var prefix = "rgba(",
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rgba = jQuery.map( this._rgba, function( v, i ) {
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return v == null ? ( i > 2 ? 1 : 0 ) : v;
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});
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if ( rgba[ 3 ] === 1 ) {
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rgba.pop();
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prefix = "rgb(";
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}
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return prefix + rgba.join(",") + ")";
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},
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toHslaString: function() {
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var prefix = "hsla(",
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hsla = jQuery.map( this.hsla(), function( v, i ) {
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if ( v == null ) {
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v = i > 2 ? 1 : 0;
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}
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// catch 1 and 2
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if ( i && i < 3 ) {
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v = Math.round( v * 100 ) + "%";
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}
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return v;
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});
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if ( hsla[ 3 ] === 1 ) {
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hsla.pop();
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prefix = "hsl(";
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}
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return prefix + hsla.join(",") + ")";
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},
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toHexString: function( includeAlpha ) {
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var rgba = this._rgba.slice(),
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alpha = rgba.pop();
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if ( includeAlpha ) {
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rgba.push( ~~( alpha * 255 ) );
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}
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return "#" + jQuery.map( rgba, function( v, i ) {
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// default to 0 when nulls exist
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v = ( v || 0 ).toString( 16 );
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return v.length === 1 ? "0" + v : v;
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}).join("");
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},
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toString: function() {
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return this._rgba[ 3 ] === 0 ? "transparent" : this.toRgbaString();
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}
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};
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color.fn.parse.prototype = color.fn;
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// hsla conversions adapted from:
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// http://www.google.com/codesearch/p#OAMlx_jo-ck/src/third_party/WebKit/Source/WebCore/inspector/front-end/Color.js&d=7&l=193
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function hue2rgb( p, q, h ) {
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h = ( h + 1 ) % 1;
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if ( h * 6 < 1 ) {
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return p + (q - p) * 6 * h;
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}
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if ( h * 2 < 1) {
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return q;
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}
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if ( h * 3 < 2 ) {
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return p + (q - p) * ((2/3) - h) * 6;
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}
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return p;
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}
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spaces.hsla.to = function ( rgba ) {
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if ( rgba[ 0 ] == null || rgba[ 1 ] == null || rgba[ 2 ] == null ) {
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return [ null, null, null, rgba[ 3 ] ];
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}
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var r = rgba[ 0 ] / 255,
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g = rgba[ 1 ] / 255,
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b = rgba[ 2 ] / 255,
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a = rgba[ 3 ],
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max = Math.max( r, g, b ),
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min = Math.min( r, g, b ),
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diff = max - min,
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add = max + min,
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l = add * 0.5,
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h, s;
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if ( min === max ) {
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h = 0;
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} else if ( r === max ) {
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h = ( 60 * ( g - b ) / diff ) + 360;
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} else if ( g === max ) {
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h = ( 60 * ( b - r ) / diff ) + 120;
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} else {
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h = ( 60 * ( r - g ) / diff ) + 240;
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}
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if ( l === 0 || l === 1 ) {
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s = l;
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} else if ( l <= 0.5 ) {
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s = diff / add;
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} else {
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s = diff / ( 2 - add );
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}
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return [ Math.round(h) % 360, s, l, a == null ? 1 : a ];
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};
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spaces.hsla.from = function ( hsla ) {
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if ( hsla[ 0 ] == null || hsla[ 1 ] == null || hsla[ 2 ] == null ) {
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return [ null, null, null, hsla[ 3 ] ];
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}
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var h = hsla[ 0 ] / 360,
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s = hsla[ 1 ],
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l = hsla[ 2 ],
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a = hsla[ 3 ],
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q = l <= 0.5 ? l * ( 1 + s ) : l + s - l * s,
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p = 2 * l - q,
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r, g, b;
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return [
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Math.round( hue2rgb( p, q, h + ( 1 / 3 ) ) * 255 ),
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Math.round( hue2rgb( p, q, h ) * 255 ),
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Math.round( hue2rgb( p, q, h - ( 1 / 3 ) ) * 255 ),
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a
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];
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};
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each( spaces, function( spaceName, space ) {
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var props = space.props,
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cache = space.cache,
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to = space.to,
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from = space.from;
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// makes rgba() and hsla()
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color.fn[ spaceName ] = function( value ) {
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// generate a cache for this space if it doesn't exist
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if ( to && !this[ cache ] ) {
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this[ cache ] = to( this._rgba );
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}
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if ( value === undefined ) {
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return this[ cache ].slice();
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}
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var type = jQuery.type( value ),
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arr = ( type === "array" || type === "object" ) ? value : arguments,
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local = this[ cache ].slice(),
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ret;
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each( props, function( key, prop ) {
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var val = arr[ type === "object" ? key : prop.idx ];
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if ( val == null ) {
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val = local[ prop.idx ];
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}
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local[ prop.idx ] = clamp( val, prop );
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});
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if ( from ) {
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ret = color( from( local ) );
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ret[ cache ] = local;
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return ret;
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} else {
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return color( local );
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}
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};
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// makes red() green() blue() alpha() hue() saturation() lightness()
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each( props, function( key, prop ) {
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// alpha is included in more than one space
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if ( color.fn[ key ] ) {
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return;
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}
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color.fn[ key ] = function( value ) {
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var vtype = jQuery.type( value ),
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fn = ( key === 'alpha' ? ( this._hsla ? 'hsla' : 'rgba' ) : spaceName ),
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local = this[ fn ](),
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cur = local[ prop.idx ],
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match;
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if ( vtype === "undefined" ) {
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return cur;
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}
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if ( vtype === "function" ) {
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value = value.call( this, cur );
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vtype = jQuery.type( value );
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}
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if ( value == null && prop.empty ) {
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return this;
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}
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if ( vtype === "string" ) {
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match = rplusequals.exec( value );
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|
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 );
|