1 <?php
  2 class Kint_Parsers_Color extends kintParser
  3 {
  4     private static $_css3Named = array(
  5         'aliceblue'=>'#f0f8ff','antiquewhite'=>'#faebd7','aqua'=>'#00ffff','aquamarine'=>'#7fffd4','azure'=>'#f0ffff',
  6         'beige'=>'#f5f5dc','bisque'=>'#ffe4c4','black'=>'#000000','blanchedalmond'=>'#ffebcd','blue'=>'#0000ff',
  7         'blueviolet'=>'#8a2be2','brown'=>'#a52a2a','burlywood'=>'#deb887','cadetblue'=>'#5f9ea0','chartreuse'=>'#7fff00',
  8         'chocolate'=>'#d2691e','coral'=>'#ff7f50','cornflowerblue'=>'#6495ed','cornsilk'=>'#fff8dc','crimson'=>'#dc143c',
  9         'cyan'=>'#00ffff','darkblue'=>'#00008b','darkcyan'=>'#008b8b','darkgoldenrod'=>'#b8860b','darkgray'=>'#a9a9a9',
 10         'darkgrey'=>'#a9a9a9','darkgreen'=>'#006400','darkkhaki'=>'#bdb76b','darkmagenta'=>'#8b008b',
 11         'darkolivegreen'=>'#556b2f','darkorange'=>'#ff8c00','darkorchid'=>'#9932cc','darkred'=>'#8b0000',
 12         'darksalmon'=>'#e9967a','darkseagreen'=>'#8fbc8f','darkslateblue'=>'#483d8b','darkslategray'=>'#2f4f4f',
 13         'darkslategrey'=>'#2f4f4f','darkturquoise'=>'#00ced1','darkviolet'=>'#9400d3','deeppink'=>'#ff1493',
 14         'deepskyblue'=>'#00bfff','dimgray'=>'#696969','dimgrey'=>'#696969','dodgerblue'=>'#1e90ff',
 15         'firebrick'=>'#b22222','floralwhite'=>'#fffaf0','forestgreen'=>'#228b22','fuchsia'=>'#ff00ff',
 16         'gainsboro'=>'#dcdcdc','ghostwhite'=>'#f8f8ff','gold'=>'#ffd700','goldenrod'=>'#daa520','gray'=>'#808080',
 17         'grey'=>'#808080','green'=>'#008000','greenyellow'=>'#adff2f','honeydew'=>'#f0fff0','hotpink'=>'#ff69b4',
 18         'indianred'=>'#cd5c5c','indigo'=>'#4b0082','ivory'=>'#fffff0','khaki'=>'#f0e68c','lavender'=>'#e6e6fa',
 19         'lavenderblush'=>'#fff0f5','lawngreen'=>'#7cfc00','lemonchiffon'=>'#fffacd','lightblue'=>'#add8e6',
 20         'lightcoral'=>'#f08080','lightcyan'=>'#e0ffff','lightgoldenrodyellow'=>'#fafad2','lightgray'=>'#d3d3d3',
 21         'lightgrey'=>'#d3d3d3','lightgreen'=>'#90ee90','lightpink'=>'#ffb6c1','lightsalmon'=>'#ffa07a',
 22         'lightseagreen'=>'#20b2aa','lightskyblue'=>'#87cefa','lightslategray'=>'#778899','lightslategrey'=>'#778899',
 23         'lightsteelblue'=>'#b0c4de','lightyellow'=>'#ffffe0','lime'=>'#00ff00','limegreen'=>'#32cd32','linen'=>'#faf0e6',
 24         'magenta'=>'#ff00ff','maroon'=>'#800000','mediumaquamarine'=>'#66cdaa','mediumblue'=>'#0000cd',
 25         'mediumorchid'=>'#ba55d3','mediumpurple'=>'#9370d8','mediumseagreen'=>'#3cb371','mediumslateblue'=>'#7b68ee',
 26         'mediumspringgreen'=>'#00fa9a','mediumturquoise'=>'#48d1cc','mediumvioletred'=>'#c71585',
 27         'midnightblue'=>'#191970','mintcream'=>'#f5fffa','mistyrose'=>'#ffe4e1','moccasin'=>'#ffe4b5',
 28         'navajowhite'=>'#ffdead','navy'=>'#000080','oldlace'=>'#fdf5e6','olive'=>'#808000','olivedrab'=>'#6b8e23',
 29         'orange'=>'#ffa500','orangered'=>'#ff4500','orchid'=>'#da70d6','palegoldenrod'=>'#eee8aa','palegreen'=>'#98fb98',
 30         'paleturquoise'=>'#afeeee','palevioletred'=>'#d87093','papayawhip'=>'#ffefd5','peachpuff'=>'#ffdab9',
 31         'peru'=>'#cd853f','pink'=>'#ffc0cb','plum'=>'#dda0dd','powderblue'=>'#b0e0e6','purple'=>'#800080',
 32         'red'=>'#ff0000','rosybrown'=>'#bc8f8f','royalblue'=>'#4169e1','saddlebrown'=>'#8b4513','salmon'=>'#fa8072',
 33         'sandybrown'=>'#f4a460','seagreen'=>'#2e8b57','seashell'=>'#fff5ee','sienna'=>'#a0522d','silver'=>'#c0c0c0',
 34         'skyblue'=>'#87ceeb','slateblue'=>'#6a5acd','slategray'=>'#708090','slategrey'=>'#708090','snow'=>'#fffafa',
 35         'springgreen'=>'#00ff7f','steelblue'=>'#4682b4','tan'=>'#d2b48c','teal'=>'#008080','thistle'=>'#d8bfd8',
 36         'tomato'=>'#ff6347','turquoise'=>'#40e0d0','violet'=>'#ee82ee','wheat'=>'#f5deb3','white'=>'#ffffff',
 37         'whitesmoke'=>'#f5f5f5','yellow'=>'#ffff00','yellowgreen'=>'#9acd32'
 38     );
 39 
 40 
 41     protected function _parse( & $variable )
 42     {
 43         if ( !self::_fits( $variable ) ) return false;
 44 
 45         $this->type  = 'CSS color';
 46         $variants    = self::_convert( $variable );
 47         $this->value =
 48             "<div style=\"background:{$variable}\" class=\"kint-color-preview\">{$variable}</div>"
 49             . "<strong>hex :</strong> {$variants['hex']}\n"
 50             . "<strong>rgb :</strong> {$variants['rgb']}\n"
 51             . ( isset( $variants['name'] ) ? "<strong>name:</strong> {$variants['name']}\n" : '' )
 52             . "<strong>hsl :</strong> {$variants['hsl']}";
 53     }
 54 
 55 
 56     private static function _fits( $variable )
 57     {
 58         if ( !is_string( $variable ) ) return false;
 59 
 60         $var = strtolower( trim( $variable ) );
 61 
 62         return isset( self::$_css3Named[$var] )
 63             || preg_match(
 64                 '/^(?:#[0-9A-Fa-f]{3}|#[0-9A-Fa-f]{6}|(?:rgb|hsl)a?\s*\((?:\s*[0-9.%]+\s*,?){3,4}\))$/',
 65                 $var
 66             );
 67     }
 68 
 69     private static function _convert( $color )
 70     {
 71         $color         = strtolower( $color );
 72         $decimalColors = array();
 73         $variants      = array(
 74             'hex'  => null,
 75             'rgb'  => null,
 76             'name' => null,
 77             'hsl'  => null,
 78         );
 79 
 80         if ( isset( self::$_css3Named[ $color ] ) ) {
 81             $variants['name'] = $color;
 82             $color            = self::$_css3Named[ $color ];
 83         }
 84 
 85         if ( $color{0} === '#' ) {
 86             $variants['hex'] = $color;
 87             $color           = substr( $color, 1 );
 88             if ( strlen( $color ) === 6 ) {
 89                 $colors = str_split( $color, 2 );
 90             } else {
 91                 $colors = array(
 92                     $color{0} . $color{0},
 93                     $color{1} . $color{1},
 94                     $color{2} . $color{2},
 95                 );
 96             }
 97 
 98             $decimalColors = array_map( 'hexdec', $colors );
 99         } elseif ( substr( $color, 0, 3 ) === 'rgb' ) {
100             $variants['rgb'] = $color;
101             preg_match_all( '#([0-9.%]+)#', $color, $matches );
102             $decimalColors = $matches[1];
103             foreach ( $decimalColors as &$color ) {
104                 if ( strpos( $color, '%' ) !== false ) {
105                     $color = str_replace( '%', '', $color ) * 2.55;
106                 }
107             }
108 
109 
110         } elseif ( substr( $color, 0, 3 ) === 'hsl' ) {
111             $variants['hsl'] = $color;
112             preg_match_all( '#([0-9.%]+)#', $color, $matches );
113 
114             $colors = $matches[1];
115             $colors[0] /= 360;
116             $colors[1] = str_replace( '%', '', $colors[1] ) / 100;
117             $colors[2] = str_replace( '%', '', $colors[2] ) / 100;
118 
119             $decimalColors = self::_HSLtoRGB( $colors );
120             if ( isset( $colors[3] ) ) {
121                 $decimalColors[] = $colors[3];
122             }
123         }
124 
125         if ( isset( $decimalColors[3] ) ) {
126             $alpha = $decimalColors[3];
127             unset( $decimalColors[3] );
128         } else {
129             $alpha = null;
130         }
131         foreach ( $variants as $type => &$variant ) {
132             if ( isset( $variant ) ) continue;
133 
134             switch ( $type ) {
135                 case 'hex':
136                     $variant = '#';
137                     foreach ( $decimalColors as &$color ) {
138                         $variant .= str_pad( dechex( $color ), 2, "0", STR_PAD_LEFT );
139                     }
140                     $variant .= isset( $alpha ) ? ' (alpha omitted)' : '';
141                     break;
142                 case 'rgb':
143                     $rgb = $decimalColors;
144                     if ( isset( $alpha ) ) {
145                         $rgb[] = $alpha;
146                         $a     = 'a';
147                     } else {
148                         $a = '';
149                     }
150                     $variant = "rgb{$a}( " . implode( ', ', $rgb ) . " )";
151                     break;
152                 case 'hsl':
153                     $rgb = self::_RGBtoHSL( $decimalColors );
154                     if ( $rgb === null ) {
155                         unset( $variants[ $type ] );
156                         break;
157                     }
158                     if ( isset( $alpha ) ) {
159                         $rgb[] = $alpha;
160                         $a     = 'a';
161                     } else {
162                         $a = '';
163                     }
164 
165                     $variant = "hsl{$a}( " . implode( ', ', $rgb ) . " )";
166                     break;
167                 case 'name':
168                     // [!] name in initial variants array must go after hex
169                     if ( ( $key = array_search( $variants['hex'], self::$_css3Named, true ) ) !== false ) {
170                         $variant = $key;
171                     } else {
172                         unset( $variants[ $type ] );
173                     }
174                     break;
175             }
176 
177         }
178 
179         return $variants;
180     }
181 
182 
183     private static function _HSLtoRGB( array $hsl )
184     {
185         list( $h, $s, $l ) = $hsl;
186         $m2 = ( $l <= 0.5 ) ? $l * ( $s + 1 ) : $l + $s - $l * $s;
187         $m1 = $l * 2 - $m2;
188         return array(
189             round( self::_hue2rgb( $m1, $m2, $h + 0.33333 ) * 255 ),
190             round( self::_hue2rgb( $m1, $m2, $h ) * 255 ),
191             round( self::_hue2rgb( $m1, $m2, $h - 0.33333 ) * 255 ),
192         );
193     }
194 
195 
196     /**
197      * Helper function for _color_hsl2rgb().
198      */
199     private static function _hue2rgb( $m1, $m2, $h )
200     {
201         $h = ( $h < 0 ) ? $h + 1 : ( ( $h > 1 ) ? $h - 1 : $h );
202         if ( $h * 6 < 1 ) return $m1 + ( $m2 - $m1 ) * $h * 6;
203         if ( $h * 2 < 1 ) return $m2;
204         if ( $h * 3 < 2 ) return $m1 + ( $m2 - $m1 ) * ( 0.66666 - $h ) * 6;
205         return $m1;
206     }
207 
208 
209     private static function _RGBtoHSL( array $rgb )
210     {
211         list( $clrR, $clrG, $clrB ) = $rgb;
212 
213         $clrMin   = min( $clrR, $clrG, $clrB );
214         $clrMax   = max( $clrR, $clrG, $clrB );
215         $deltaMax = $clrMax - $clrMin;
216 
217         $L = ( $clrMax + $clrMin ) / 510;
218 
219         if ( 0 == $deltaMax ) {
220             $H = 0;
221             $S = 0;
222         } else {
223             if ( 0.5 > $L ) {
224                 $S = $deltaMax / ( $clrMax + $clrMin );
225             } else {
226                 $S = $deltaMax / ( 510 - $clrMax - $clrMin );
227             }
228 
229             if ( $clrMax == $clrR ) {
230                 $H = ( $clrG - $clrB ) / ( 6.0 * $deltaMax );
231             } else if ( $clrMax == $clrG ) {
232                 $H = 1 / 3 + ( $clrB - $clrR ) / ( 6.0 * $deltaMax );
233             } else {
234                 $H = 2 / 3 + ( $clrR - $clrG ) / ( 6.0 * $deltaMax );
235             }
236 
237             if ( 0 > $H ) $H += 1;
238             if ( 1 < $H ) $H -= 1;
239         }
240         return array(
241             round( $H * 360 ),
242             round( $S * 100 ) . '%',
243             round( $L * 100 ) . '%'
244         );
245 
246     }
247 }
248 
249 /* *************
250  * TEST DATA
251  *
252 dd(array(
253 'hsl(0,  100%,50%)',
254 'hsl(30, 100%,50%)',
255 'hsl(60, 100%,50%)',
256 'hsl(90, 100%,50%)',
257 'hsl(120,100%,50%)',
258 'hsl(150,100%,50%)',
259 'hsl(180,100%,50%)',
260 'hsl(210,100%,50%)',
261 'hsl(240,100%,50%)',
262 'hsl(270,100%,50%)',
263 'hsl(300,100%,50%)',
264 'hsl(330,100%,50%)',
265 'hsl(360,100%,50%)',
266 'hsl(120,100%,25%)',
267 'hsl(120,100%,50%)',
268 'hsl(120,100%,75%)',
269 'hsl(120,100%,50%)',
270 'hsl(120, 67%,50%)',
271 'hsl(120, 33%,50%)',
272 'hsl(120,  0%,50%)',
273 'hsl(120, 60%,70%)',
274 '#f03',
275 '#F03',
276 '#ff0033',
277 '#FF0033',
278 'rgb(255,0,51)',
279 'rgb(255, 0, 51)',
280 'rgb(100%,0%,20%)',
281 'rgb(100%, 0%, 20%)',
282 'hsla(240,100%,50%,0.05)',
283 'hsla(240,100%,50%, 0.4)',
284 'hsla(240,100%,50%, 0.7)',
285 'hsla(240,100%,50%,   1)',
286 'rgba(255,0,0,0.1)',
287 'rgba(255,0,0,0.4)',
288 'rgba(255,0,0,0.7)',
289 'rgba(255,0,0,  1)',
290 'black',
291 'silver',
292 'gray',
293 'white',
294 'maroon',
295 'red',
296 'purple',
297 'fuchsia',
298 'green',
299 'lime',
300 'olive',
301 'yellow',
302 'navy',
303 'blue',
304 'teal',
305 'aqua',
306 'orange',
307 'aliceblue',
308 'antiquewhite',
309 'aquamarine',
310 'azure',
311 'beige',
312 'bisque',
313 'blanchedalmond',
314 'blueviolet',
315 'brown',
316 'burlywood',
317 'cadetblue',
318 'chartreuse',
319 'chocolate',
320 'coral',
321 'cornflowerblue',
322 'cornsilk',
323 'crimson',
324 'darkblue',
325 'darkcyan',
326 'darkgoldenrod',
327 'darkgray',
328 'darkgreen',
329 'darkgrey',
330 'darkkhaki',
331 'darkmagenta',
332 'darkolivegreen',
333 'darkorange',
334 'darkorchid',
335 'darkred',
336 'darksalmon',
337 'darkseagreen',
338 'darkslateblue',
339 'darkslategray',
340 'darkslategrey',
341 'darkturquoise',
342 'darkviolet',
343 'deeppink',
344 'deepskyblue',
345 'dimgray',
346 'dimgrey',
347 'dodgerblue',
348 'firebrick',
349 'floralwhite',
350 'forestgreen',
351 'gainsboro',
352 'ghostwhite',
353 'gold',
354 'goldenrod',
355 'greenyellow',
356 'grey',
357 'honeydew',
358 'hotpink',
359 'indianred',
360 'indigo',
361 'ivory',
362 'khaki',
363 'lavender',
364 'lavenderblush',
365 'lawngreen',
366 'lemonchiffon',
367 'lightblue',
368 'lightcoral',
369 'lightcyan',
370 'lightgoldenrodyellow',
371 'lightgray',
372 'lightgreen',
373 'lightgrey',
374 'lightpink',
375 'lightsalmon',
376 'lightseagreen',
377 'lightskyblue',
378 'lightslategray',
379 'lightslategrey',
380 'lightsteelblue',
381 'lightyellow',
382 'limegreen',
383 'linen',
384 'mediumaquamarine',
385 'mediumblue',
386 'mediumorchid',
387 'mediumpurple',
388 'mediumseagreen',
389 'mediumslateblue',
390 'mediumspringgreen',
391 'mediumturquoise',
392 'mediumvioletred',
393 'midnightblue',
394 'mintcream',
395 'mistyrose',
396 'moccasin',
397 'navajowhite',
398 'oldlace',
399 'olivedrab',
400 ));*/