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   1  <?php
   2  
   3  
   4  namespace splitbrain\slika;
   5  
   6  /**
   7   * Factory to process an image using an available Adapter
   8   */
   9  class Slika
  10  {
  11      /** rotate an image counter clock wise */
  12      const ROTATE_CCW = 8;
  13      /** rotate an image clock wise */
  14      const ROTATE_CW = 6;
  15      /** rotate on it's head */
  16      const ROTATE_TOPDOWN = 3;
  17  
  18      /** these can be overwritten using the options array in run() */
  19      const DEFAULT_OPTIONS = [
  20          'quality' => 92,
  21          'imconvert' => '/usr/bin/convert',
  22      ];
  23  
  24      /**
  25       * This is a factory only, thus the constructor is private
  26       */
  27      private function __construct()
  28      {
  29          // there is no constructor.
  30      }
  31  
  32      /**
  33       * Start processing the image
  34       *
  35       * @param string $imagePath
  36       * @param array $options
  37       * @return Adapter
  38       * @throws Exception
  39       */
  40      public static function run($imagePath, $options = [])
  41      {
  42          $options = array_merge(self::DEFAULT_OPTIONS, $options);
  43  
  44          if (is_executable($options['imconvert'])) {
  45              return new ImageMagickAdapter($imagePath, $options);
  46          }
  47  
  48          if (function_exists('gd_info')) {
  49              return new GdAdapter($imagePath, $options);
  50          }
  51  
  52          throw new Exception('No suitable Adapter found');
  53      }
  54  
  55  }