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1 /*! |
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2 * jQuery Color Animations v2.1.2 |
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3 * https://github.com/jquery/jquery-color |
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4 * |
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5 * Copyright 2013 jQuery Foundation and other contributors |
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6 * Released under the MIT license. |
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7 * http://jquery.org/license |
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8 * |
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9 * Date: Wed Jan 16 08:47:09 2013 -0600 |
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10 */ |
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11 (function( jQuery, undefined ) { |
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12 |
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13 var stepHooks = "backgroundColor borderBottomColor borderLeftColor borderRightColor borderTopColor color columnRuleColor outlineColor textDecorationColor textEmphasisColor", |
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14 |
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15 // plusequals test for += 100 -= 100 |
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16 rplusequals = /^([\-+])=\s*(\d+\.?\d*)/, |
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17 // a set of RE's that can match strings and generate color tuples. |
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18 stringParsers = [{ |
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19 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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20 parse: function( execResult ) { |
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21 return [ |
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22 execResult[ 1 ], |
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23 execResult[ 2 ], |
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24 execResult[ 3 ], |
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25 execResult[ 4 ] |
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26 ]; |
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27 } |
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28 }, { |
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29 re: /rgba?\(\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d?(?:\.\d+)?)\s*)?\)/, |
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30 parse: function( execResult ) { |
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31 return [ |
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32 execResult[ 1 ] * 2.55, |
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33 execResult[ 2 ] * 2.55, |
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34 execResult[ 3 ] * 2.55, |
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35 execResult[ 4 ] |
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36 ]; |
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37 } |
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38 }, { |
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39 // this regex ignores A-F because it's compared against an already lowercased string |
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40 re: /#([a-f0-9]{2})([a-f0-9]{2})([a-f0-9]{2})/, |
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41 parse: function( execResult ) { |
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42 return [ |
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43 parseInt( execResult[ 1 ], 16 ), |
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44 parseInt( execResult[ 2 ], 16 ), |
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45 parseInt( execResult[ 3 ], 16 ) |
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46 ]; |
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47 } |
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48 }, { |
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49 // this regex ignores A-F because it's compared against an already lowercased string |
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50 re: /#([a-f0-9])([a-f0-9])([a-f0-9])/, |
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51 parse: function( execResult ) { |
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52 return [ |
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53 parseInt( execResult[ 1 ] + execResult[ 1 ], 16 ), |
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54 parseInt( execResult[ 2 ] + execResult[ 2 ], 16 ), |
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55 parseInt( execResult[ 3 ] + execResult[ 3 ], 16 ) |
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56 ]; |
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57 } |
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58 }, { |
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59 re: /hsla?\(\s*(\d+(?:\.\d+)?)\s*,\s*(\d+(?:\.\d+)?)\%\s*,\s*(\d+(?:\.\d+)?)\%\s*(?:,\s*(\d?(?:\.\d+)?)\s*)?\)/, |
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60 space: "hsla", |
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61 parse: function( execResult ) { |
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62 return [ |
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63 execResult[ 1 ], |
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64 execResult[ 2 ] / 100, |
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65 execResult[ 3 ] / 100, |
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66 execResult[ 4 ] |
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67 ]; |
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68 } |
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69 }], |
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70 |
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71 // jQuery.Color( ) |
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72 color = jQuery.Color = function( color, green, blue, alpha ) { |
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73 return new jQuery.Color.fn.parse( color, green, blue, alpha ); |
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74 }, |
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75 spaces = { |
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76 rgba: { |
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77 props: { |
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78 red: { |
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79 idx: 0, |
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80 type: "byte" |
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81 }, |
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82 green: { |
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83 idx: 1, |
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84 type: "byte" |
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85 }, |
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86 blue: { |
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87 idx: 2, |
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88 type: "byte" |
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89 } |
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90 } |
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91 }, |
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92 |
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93 hsla: { |
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94 props: { |
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95 hue: { |
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96 idx: 0, |
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97 type: "degrees" |
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98 }, |
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99 saturation: { |
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100 idx: 1, |
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101 type: "percent" |
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102 }, |
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103 lightness: { |
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104 idx: 2, |
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105 type: "percent" |
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106 } |
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107 } |
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108 } |
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109 }, |
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110 propTypes = { |
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111 "byte": { |
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112 floor: true, |
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113 max: 255 |
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114 }, |
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115 "percent": { |
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116 max: 1 |
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117 }, |
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118 "degrees": { |
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119 mod: 360, |
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120 floor: true |
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121 } |
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122 }, |
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123 support = color.support = {}, |
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124 |
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125 // element for support tests |
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126 supportElem = jQuery( "<p>" )[ 0 ], |
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127 |
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128 // colors = jQuery.Color.names |
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129 colors, |
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130 |
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131 // local aliases of functions called often |
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132 each = jQuery.each; |
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133 |
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134 // determine rgba support immediately |
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135 supportElem.style.cssText = "background-color:rgba(1,1,1,.5)"; |
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136 support.rgba = supportElem.style.backgroundColor.indexOf( "rgba" ) > -1; |
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137 |
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138 // define cache name and alpha properties |
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139 // for rgba and hsla spaces |
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140 each( spaces, function( spaceName, space ) { |
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141 space.cache = "_" + spaceName; |
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142 space.props.alpha = { |
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143 idx: 3, |
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144 type: "percent", |
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145 def: 1 |
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146 }; |
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147 }); |
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148 |
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149 function clamp( value, prop, allowEmpty ) { |
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150 var type = propTypes[ prop.type ] || {}; |
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151 |
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152 if ( value == null ) { |
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153 return (allowEmpty || !prop.def) ? null : prop.def; |
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154 } |
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155 |
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156 // ~~ is an short way of doing floor for positive numbers |
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157 value = type.floor ? ~~value : parseFloat( value ); |
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158 |
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159 // IE will pass in empty strings as value for alpha, |
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160 // which will hit this case |
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161 if ( isNaN( value ) ) { |
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162 return prop.def; |
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163 } |
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164 |
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165 if ( type.mod ) { |
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166 // we add mod before modding to make sure that negatives values |
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167 // get converted properly: -10 -> 350 |
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168 return (value + type.mod) % type.mod; |
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169 } |
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170 |
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171 // for now all property types without mod have min and max |
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172 return 0 > value ? 0 : type.max < value ? type.max : value; |
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173 } |
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174 |
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175 function stringParse( string ) { |
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176 var inst = color(), |
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177 rgba = inst._rgba = []; |
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178 |
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179 string = string.toLowerCase(); |
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180 |
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181 each( stringParsers, function( i, parser ) { |
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182 var parsed, |
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183 match = parser.re.exec( string ), |
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184 values = match && parser.parse( match ), |
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185 spaceName = parser.space || "rgba"; |
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186 |
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187 if ( values ) { |
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188 parsed = inst[ spaceName ]( values ); |
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189 |
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190 // if this was an rgba parse the assignment might happen twice |
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191 // oh well.... |
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192 inst[ spaces[ spaceName ].cache ] = parsed[ spaces[ spaceName ].cache ]; |
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193 rgba = inst._rgba = parsed._rgba; |
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194 |
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195 // exit each( stringParsers ) here because we matched |
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196 return false; |
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197 } |
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198 }); |
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199 |
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200 // Found a stringParser that handled it |
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201 if ( rgba.length ) { |
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202 |
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203 // if this came from a parsed string, force "transparent" when alpha is 0 |
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204 // chrome, (and maybe others) return "transparent" as rgba(0,0,0,0) |
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205 if ( rgba.join() === "0,0,0,0" ) { |
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206 jQuery.extend( rgba, colors.transparent ); |
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207 } |
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208 return inst; |
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209 } |
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210 |
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211 // named colors |
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212 return colors[ string ]; |
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213 } |
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214 |
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215 color.fn = jQuery.extend( color.prototype, { |
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216 parse: function( red, green, blue, alpha ) { |
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217 if ( red === undefined ) { |
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218 this._rgba = [ null, null, null, null ]; |
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219 return this; |
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220 } |
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221 if ( red.jquery || red.nodeType ) { |
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222 red = jQuery( red ).css( green ); |
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223 green = undefined; |
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224 } |
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225 |
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226 var inst = this, |
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227 type = jQuery.type( red ), |
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228 rgba = this._rgba = []; |
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229 |
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230 // more than 1 argument specified - assume ( red, green, blue, alpha ) |
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231 if ( green !== undefined ) { |
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232 red = [ red, green, blue, alpha ]; |
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233 type = "array"; |
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234 } |
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235 |
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236 if ( type === "string" ) { |
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237 return this.parse( stringParse( red ) || colors._default ); |
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238 } |
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239 |
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240 if ( type === "array" ) { |
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241 each( spaces.rgba.props, function( key, prop ) { |
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242 rgba[ prop.idx ] = clamp( red[ prop.idx ], prop ); |
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243 }); |
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244 return this; |
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245 } |
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246 |
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247 if ( type === "object" ) { |
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248 if ( red instanceof color ) { |
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249 each( spaces, function( spaceName, space ) { |
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250 if ( red[ space.cache ] ) { |
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251 inst[ space.cache ] = red[ space.cache ].slice(); |
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252 } |
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253 }); |
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254 } else { |
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255 each( spaces, function( spaceName, space ) { |
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256 var cache = space.cache; |
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257 each( space.props, function( key, prop ) { |
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258 |
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259 // if the cache doesn't exist, and we know how to convert |
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260 if ( !inst[ cache ] && space.to ) { |
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261 |
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262 // if the value was null, we don't need to copy it |
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263 // if the key was alpha, we don't need to copy it either |
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264 if ( key === "alpha" || red[ key ] == null ) { |
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265 return; |
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266 } |
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267 inst[ cache ] = space.to( inst._rgba ); |
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268 } |
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269 |
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270 // this is the only case where we allow nulls for ALL properties. |
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271 // call clamp with alwaysAllowEmpty |
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272 inst[ cache ][ prop.idx ] = clamp( red[ key ], prop, true ); |
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273 }); |
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274 |
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275 // everything defined but alpha? |
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276 if ( inst[ cache ] && jQuery.inArray( null, inst[ cache ].slice( 0, 3 ) ) < 0 ) { |
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277 // use the default of 1 |
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278 inst[ cache ][ 3 ] = 1; |
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279 if ( space.from ) { |
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280 inst._rgba = space.from( inst[ cache ] ); |
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281 } |
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282 } |
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283 }); |
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284 } |
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285 return this; |
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286 } |
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287 }, |
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288 is: function( compare ) { |
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289 var is = color( compare ), |
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290 same = true, |
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291 inst = this; |
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292 |
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293 each( spaces, function( _, space ) { |
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294 var localCache, |
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295 isCache = is[ space.cache ]; |
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296 if (isCache) { |
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297 localCache = inst[ space.cache ] || space.to && space.to( inst._rgba ) || []; |
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298 each( space.props, function( _, prop ) { |
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299 if ( isCache[ prop.idx ] != null ) { |
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300 same = ( isCache[ prop.idx ] === localCache[ prop.idx ] ); |
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301 return same; |
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302 } |
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303 }); |
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304 } |
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305 return same; |
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306 }); |
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307 return same; |
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308 }, |
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309 _space: function() { |
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310 var used = [], |
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311 inst = this; |
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312 each( spaces, function( spaceName, space ) { |
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313 if ( inst[ space.cache ] ) { |
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314 used.push( spaceName ); |
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315 } |
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316 }); |
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317 return used.pop(); |
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318 }, |
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319 transition: function( other, distance ) { |
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320 var end = color( other ), |
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321 spaceName = end._space(), |
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322 space = spaces[ spaceName ], |
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323 startColor = this.alpha() === 0 ? color( "transparent" ) : this, |
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324 start = startColor[ space.cache ] || space.to( startColor._rgba ), |
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325 result = start.slice(); |
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326 |
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327 end = end[ space.cache ]; |
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328 each( space.props, function( key, prop ) { |
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329 var index = prop.idx, |
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330 startValue = start[ index ], |
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331 endValue = end[ index ], |
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332 type = propTypes[ prop.type ] || {}; |
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333 |
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334 // if null, don't override start value |
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335 if ( endValue === null ) { |
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336 return; |
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337 } |
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338 // if null - use end |
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339 if ( startValue === null ) { |
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340 result[ index ] = endValue; |
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341 } else { |
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342 if ( type.mod ) { |
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343 if ( endValue - startValue > type.mod / 2 ) { |
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344 startValue += type.mod; |
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345 } else if ( startValue - endValue > type.mod / 2 ) { |
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346 startValue -= type.mod; |
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347 } |
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348 } |
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349 result[ index ] = clamp( ( endValue - startValue ) * distance + startValue, prop ); |
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350 } |
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351 }); |
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352 return this[ spaceName ]( result ); |
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353 }, |
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354 blend: function( opaque ) { |
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355 // if we are already opaque - return ourself |
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356 if ( this._rgba[ 3 ] === 1 ) { |
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357 return this; |
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358 } |
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359 |
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360 var rgb = this._rgba.slice(), |
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361 a = rgb.pop(), |
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362 blend = color( opaque )._rgba; |
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363 |
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364 return color( jQuery.map( rgb, function( v, i ) { |
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365 return ( 1 - a ) * blend[ i ] + a * v; |
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366 })); |
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367 }, |
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368 toRgbaString: function() { |
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369 var prefix = "rgba(", |
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370 rgba = jQuery.map( this._rgba, function( v, i ) { |
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371 return v == null ? ( i > 2 ? 1 : 0 ) : v; |
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372 }); |
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373 |
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374 if ( rgba[ 3 ] === 1 ) { |
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375 rgba.pop(); |
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376 prefix = "rgb("; |
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377 } |
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378 |
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379 return prefix + rgba.join() + ")"; |
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380 }, |
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381 toHslaString: function() { |
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382 var prefix = "hsla(", |
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383 hsla = jQuery.map( this.hsla(), function( v, i ) { |
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384 if ( v == null ) { |
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385 v = i > 2 ? 1 : 0; |
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386 } |
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387 |
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388 // catch 1 and 2 |
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389 if ( i && i < 3 ) { |
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390 v = Math.round( v * 100 ) + "%"; |
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391 } |
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392 return v; |
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393 }); |
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394 |
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395 if ( hsla[ 3 ] === 1 ) { |
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396 hsla.pop(); |
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397 prefix = "hsl("; |
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398 } |
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399 return prefix + hsla.join() + ")"; |
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400 }, |
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401 toHexString: function( includeAlpha ) { |
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402 var rgba = this._rgba.slice(), |
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403 alpha = rgba.pop(); |
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404 |
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405 if ( includeAlpha ) { |
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406 rgba.push( ~~( alpha * 255 ) ); |
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407 } |
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408 |
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409 return "#" + jQuery.map( rgba, function( v ) { |
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410 |
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411 // default to 0 when nulls exist |
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412 v = ( v || 0 ).toString( 16 ); |
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413 return v.length === 1 ? "0" + v : v; |
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414 }).join(""); |
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415 }, |
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416 toString: function() { |
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417 return this._rgba[ 3 ] === 0 ? "transparent" : this.toRgbaString(); |
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418 } |
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419 }); |
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420 color.fn.parse.prototype = color.fn; |
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421 |
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422 // hsla conversions adapted from: |
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423 // https://code.google.com/p/maashaack/source/browse/packages/graphics/trunk/src/graphics/colors/HUE2RGB.as?r=5021 |
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424 |
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425 function hue2rgb( p, q, h ) { |
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426 h = ( h + 1 ) % 1; |
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427 if ( h * 6 < 1 ) { |
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428 return p + (q - p) * h * 6; |
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429 } |
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430 if ( h * 2 < 1) { |
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431 return q; |
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432 } |
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433 if ( h * 3 < 2 ) { |
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434 return p + (q - p) * ((2/3) - h) * 6; |
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435 } |
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436 return p; |
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437 } |
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438 |
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439 spaces.hsla.to = function ( rgba ) { |
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440 if ( rgba[ 0 ] == null || rgba[ 1 ] == null || rgba[ 2 ] == null ) { |
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441 return [ null, null, null, rgba[ 3 ] ]; |
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442 } |
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443 var r = rgba[ 0 ] / 255, |
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444 g = rgba[ 1 ] / 255, |
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445 b = rgba[ 2 ] / 255, |
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446 a = rgba[ 3 ], |
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447 max = Math.max( r, g, b ), |
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448 min = Math.min( r, g, b ), |
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449 diff = max - min, |
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450 add = max + min, |
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451 l = add * 0.5, |
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452 h, s; |
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453 |
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454 if ( min === max ) { |
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455 h = 0; |
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456 } else if ( r === max ) { |
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457 h = ( 60 * ( g - b ) / diff ) + 360; |
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458 } else if ( g === max ) { |
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459 h = ( 60 * ( b - r ) / diff ) + 120; |
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460 } else { |
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461 h = ( 60 * ( r - g ) / diff ) + 240; |
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462 } |
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463 |
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464 // chroma (diff) == 0 means greyscale which, by definition, saturation = 0% |
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465 // otherwise, saturation is based on the ratio of chroma (diff) to lightness (add) |
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466 if ( diff === 0 ) { |
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467 s = 0; |
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468 } else if ( l <= 0.5 ) { |
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469 s = diff / add; |
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470 } else { |
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471 s = diff / ( 2 - add ); |
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472 } |
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473 return [ Math.round(h) % 360, s, l, a == null ? 1 : a ]; |
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474 }; |
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475 |
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476 spaces.hsla.from = function ( hsla ) { |
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477 if ( hsla[ 0 ] == null || hsla[ 1 ] == null || hsla[ 2 ] == null ) { |
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478 return [ null, null, null, hsla[ 3 ] ]; |
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479 } |
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480 var h = hsla[ 0 ] / 360, |
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481 s = hsla[ 1 ], |
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482 l = hsla[ 2 ], |
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483 a = hsla[ 3 ], |
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484 q = l <= 0.5 ? l * ( 1 + s ) : l + s - l * s, |
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485 p = 2 * l - q; |
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486 |
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487 return [ |
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488 Math.round( hue2rgb( p, q, h + ( 1 / 3 ) ) * 255 ), |
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489 Math.round( hue2rgb( p, q, h ) * 255 ), |
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490 Math.round( hue2rgb( p, q, h - ( 1 / 3 ) ) * 255 ), |
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491 a |
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492 ]; |
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493 }; |
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494 |
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495 |
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496 each( spaces, function( spaceName, space ) { |
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497 var props = space.props, |
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498 cache = space.cache, |
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499 to = space.to, |
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500 from = space.from; |
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501 |
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502 // makes rgba() and hsla() |
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503 color.fn[ spaceName ] = function( value ) { |
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504 |
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505 // generate a cache for this space if it doesn't exist |
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506 if ( to && !this[ cache ] ) { |
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507 this[ cache ] = to( this._rgba ); |
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508 } |
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509 if ( value === undefined ) { |
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510 return this[ cache ].slice(); |
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511 } |
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512 |
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513 var ret, |
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514 type = jQuery.type( value ), |
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515 arr = ( type === "array" || type === "object" ) ? value : arguments, |
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516 local = this[ cache ].slice(); |
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517 |
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518 each( props, function( key, prop ) { |
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519 var val = arr[ type === "object" ? key : prop.idx ]; |
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520 if ( val == null ) { |
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521 val = local[ prop.idx ]; |
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522 } |
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523 local[ prop.idx ] = clamp( val, prop ); |
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524 }); |
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525 |
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526 if ( from ) { |
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527 ret = color( from( local ) ); |
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528 ret[ cache ] = local; |
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529 return ret; |
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530 } else { |
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531 return color( local ); |
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532 } |
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533 }; |
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534 |
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535 // makes red() green() blue() alpha() hue() saturation() lightness() |
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536 each( props, function( key, prop ) { |
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537 // alpha is included in more than one space |
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538 if ( color.fn[ key ] ) { |
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539 return; |
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540 } |
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541 color.fn[ key ] = function( value ) { |
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542 var vtype = jQuery.type( value ), |
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543 fn = ( key === "alpha" ? ( this._hsla ? "hsla" : "rgba" ) : spaceName ), |
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544 local = this[ fn ](), |
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545 cur = local[ prop.idx ], |
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546 match; |
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547 |
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548 if ( vtype === "undefined" ) { |
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549 return cur; |
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550 } |
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551 |
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552 if ( vtype === "function" ) { |
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553 value = value.call( this, cur ); |
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554 vtype = jQuery.type( value ); |
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555 } |
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556 if ( value == null && prop.empty ) { |
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557 return this; |
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558 } |
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559 if ( vtype === "string" ) { |
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560 match = rplusequals.exec( value ); |
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561 if ( match ) { |
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562 value = cur + parseFloat( match[ 2 ] ) * ( match[ 1 ] === "+" ? 1 : -1 ); |
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563 } |
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564 } |
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565 local[ prop.idx ] = value; |
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566 return this[ fn ]( local ); |
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567 }; |
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568 }); |
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569 }); |
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570 |
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571 // add cssHook and .fx.step function for each named hook. |
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572 // accept a space separated string of properties |
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573 color.hook = function( hook ) { |
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574 var hooks = hook.split( " " ); |
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575 each( hooks, function( i, hook ) { |
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576 jQuery.cssHooks[ hook ] = { |
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577 set: function( elem, value ) { |
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578 var parsed, curElem, |
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579 backgroundColor = ""; |
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580 |
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581 if ( value !== "transparent" && ( jQuery.type( value ) !== "string" || ( parsed = stringParse( value ) ) ) ) { |
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582 value = color( parsed || value ); |
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583 if ( !support.rgba && value._rgba[ 3 ] !== 1 ) { |
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584 curElem = hook === "backgroundColor" ? elem.parentNode : elem; |
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585 while ( |
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586 (backgroundColor === "" || backgroundColor === "transparent") && |
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587 curElem && curElem.style |
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588 ) { |
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589 try { |
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590 backgroundColor = jQuery.css( curElem, "backgroundColor" ); |
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591 curElem = curElem.parentNode; |
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592 } catch ( e ) { |
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593 } |
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594 } |
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595 |
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596 value = value.blend( backgroundColor && backgroundColor !== "transparent" ? |
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597 backgroundColor : |
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598 "_default" ); |
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599 } |
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600 |
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601 value = value.toRgbaString(); |
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602 } |
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603 try { |
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604 elem.style[ hook ] = value; |
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605 } catch( e ) { |
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606 // wrapped to prevent IE from throwing errors on "invalid" values like 'auto' or 'inherit' |
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607 } |
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608 } |
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609 }; |
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610 jQuery.fx.step[ hook ] = function( fx ) { |
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611 if ( !fx.colorInit ) { |
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612 fx.start = color( fx.elem, hook ); |
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613 fx.end = color( fx.end ); |
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614 fx.colorInit = true; |
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615 } |
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616 jQuery.cssHooks[ hook ].set( fx.elem, fx.start.transition( fx.end, fx.pos ) ); |
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617 }; |
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618 }); |
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619 |
|
620 }; |
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621 |
|
622 color.hook( stepHooks ); |
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623 |
|
624 jQuery.cssHooks.borderColor = { |
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625 expand: function( value ) { |
|
626 var expanded = {}; |
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627 |
|
628 each( [ "Top", "Right", "Bottom", "Left" ], function( i, part ) { |
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629 expanded[ "border" + part + "Color" ] = value; |
|
630 }); |
|
631 return expanded; |
|
632 } |
|
633 }; |
|
634 |
|
635 // Basic color names only. |
|
636 // Usage of any of the other color names requires adding yourself or including |
|
637 // jquery.color.svg-names.js. |
|
638 colors = jQuery.Color.names = { |
|
639 // 4.1. Basic color keywords |
|
640 aqua: "#00ffff", |
|
641 black: "#000000", |
|
642 blue: "#0000ff", |
|
643 fuchsia: "#ff00ff", |
|
644 gray: "#808080", |
|
645 green: "#008000", |
|
646 lime: "#00ff00", |
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647 maroon: "#800000", |
|
648 navy: "#000080", |
|
649 olive: "#808000", |
|
650 purple: "#800080", |
|
651 red: "#ff0000", |
|
652 silver: "#c0c0c0", |
|
653 teal: "#008080", |
|
654 white: "#ffffff", |
|
655 yellow: "#ffff00", |
|
656 |
|
657 // 4.2.3. "transparent" color keyword |
|
658 transparent: [ null, null, null, 0 ], |
|
659 |
|
660 _default: "#ffffff" |
|
661 }; |
|
662 |
|
663 })( jQuery ); |