lib/AkColor.php

   1 <?php
   2 /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
   3
   4 // +----------------------------------------------------------------------+
   5 // | Akelos Framework - http://www.akelos.org                             |
   6 // +----------------------------------------------------------------------+
   7 // | Copyright (c) 2002-2006, Akelos Media, S.L.  & Bermi Ferrer Martinez |
   8 // | Released under the GNU Lesser General Public License, see LICENSE.txt|
   9 // +----------------------------------------------------------------------+
  10
  11 /**
  12  * @package ActiveSupport
  13  * @subpackage Utils
  14  * @author Bermi Ferrer <bermi a.t akelos c.om>
  15  * @copyright Copyright (c) 2002-2006, Akelos Media, S.L. http://www.akelos.org
  16  * @license GNU Lesser General Public License <http://www.gnu.org/copyleft/lesser.html>
  17  */
  18
  19 require_once(AK_VENDOR_DIR.DS.'pear'.DS.'Image'.DS.'Color.php');
  20
  21 class AkColor extends Image_Color
  22 {
  23     function rgbToHex()
  24     {
  25         $rgb = func_get_args();
  26         $hex = '';
  27         foreach (count($rgb) == 1 ? $rgb[0] : $rgb as $color){
  28             $color = dechex($color);
  29             $hex .= strlen($color) == 2 ? $color : $color.$color;
  30         }
  31         return $hex;
  32     }
  33
  34     function hexToRgb($hex_color)
  35     {
  36         $hex_color = strtolower(trim($hex_color,'#;&Hh'));
  37         return array_map('hexdec',explode('.',wordwrap($hex_color, ceil(strlen($hex_color)/3),'.',1)));
  38     }
  39
  40     function getOpositeHex($hex_color)
  41     {
  42         $rgb = AkColor::hexToRgb($hex_color);
  43         foreach ($rgb as $k=>$color){
  44             $rgb[$k] = (255-$color < 0 ? 0 : 255-$color);
  45         }
  46         return AkColor::rgbToHex($rgb);
  47     }
  48
  49     function getRandomHex()
  50     {
  51         return AkColor::rgbToHex(rand(0,255),rand(0,255),rand(0,255));
  52     }
  53 }
  54
  55 ?>