themes/svg_gradient.php

   1 <?php
   2 /**
   3  * Theme based generator for SVG gradient.
   4  *
   5  * @package PhpMyAdmin-theme
   6  */
   7 header('Content-Type: image/svg+xml');
   8 header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 3600) . ' GMT');
   9
  10 /**
  11  * Gets single color from GET parameters validating it.
  12  *
  13  * @param string $get_name Name of parameter in request
  14  * @param string $default  Default value
  15  *
  16  * @return string Color name or code.
  17  */
  18 function PMA_gradientGetColor($get_name, $default)
  19 {
  20     // get color from GET args, only alphanumeric chcracters
  21     $opts = array('options' => array('regexp' => '/^[a-z0-9]+$/i'));
  22     $color = filter_input(INPUT_GET, $get_name, FILTER_VALIDATE_REGEXP, $opts);
  23     if (preg_match('/^[a-f0-9]{6}$/', $color)) {
  24         return '#' . $color;
  25     }
  26     return $color ? $color : $default;
  27 }
  28
  29 $from = PMA_gradientGetColor('from', 'white');
  30 $to = PMA_gradientGetColor('to', 'blank');
  31
  32 echo '<?xml version="1.0" ?>';
  33 ?>
  34 <svg
  35     xmlns="http://www.w3.org/2000/svg"
  36     preserveAspectRatio="none"
  37     version="1.0" width="100%" height="100%">
  38     <defs>
  39         <linearGradient id="linear-gradient" x1="0%" y1="0%" x2="0%" y2="100%">
  40             <stop
  41                 offset="0%"
  42                 stop-color="<?php echo $from; ?>"
  43                 stop-opacity="1"
  44             />
  45             <stop
  46                 offset="100%"
  47                 stop-color="<?php echo $to; ?>"
  48                 stop-opacity="1"
  49             />
  50         </linearGradient>
  51     </defs>
  52     <rect width="100%" height="100%" style="fill:url(#linear-gradient);" />
  53 </svg>