[Sommaire] [Imprimer]

   1  <?php
   2  
   3      
   4  
   5      /**
   6       * \ingroup Gallery_resizer
   7       *
   8       * Abstract class for generating thumbnails. It actually provides no methods but only
   9       * the skeleton of the functions that should be implemented by the generators
  10       * themselves.
  11       */
  12      class GalleryAbstractResizer
  13      {
  14  
  15          var $_image;
  16          var $_outputMethod;
  17          var $_keepAspectRatio;
  18  
  19          /**
  20           * Constructor.
  21           *
  22           */
  23          function GalleryAbstractResizer( $image, $outputMethod )
  24          {    
  25              $this->_image  = $image;
  26              $this->_outputMethod = $outputMethod;
  27              $this->_keepAspectRatio = true;
  28          }
  29  
  30          /** 
  31           * Informs the resizer to keep the aspect ratio of the image when resizing, although
  32           * this value may be ignored by the resizer and it depends on the implementation.
  33           *
  34           * @param keepAspectRatio Whether to keep the aspect ratio
  35           */
  36  		function setKeepAspectRatio( $keepAspectRatio )
  37          {
  38              $this->_keepAspectRatio = $keepAspectRatio;
  39          }
  40  
  41          /**
  42           * Generates the thumbnail
  43           * Uses the values set in the constructor regarding the width, height and output format
  44           *
  45           * @return Returns a the path to the thumbnail that was generated, or empty if error
  46           * @see GalleryResizer::generate()
  47           */
  48          function generate( $outFile, $width, $height )
  49          {
  50              throw( new Exception( "This function can't be called and must be implemented by child classes!" ));
  51              die();
  52          }
  53      }
  54  ?>