[Sommaire] [Imprimer]

   1  <?php
   2  /**
   3   * Create thumbnails.
   4   * @author $Author: Wei Zhuo $
   5   * @version $Id: Thumbnail.php 2114 2005-11-04 21:51:13Z wishy $
   6   * @package ImageManager
   7   */
   8  
   9  
  10  require_once ('Transform.php');
  11  
  12  /**
  13   * Thumbnail creation
  14   * @author $Author: Wei Zhuo $
  15   * @version $Id: Thumbnail.php 2114 2005-11-04 21:51:13Z wishy $
  16   * @package ImageManager
  17   * @subpackage Images
  18   */
  19  class Thumbnail 
  20  {
  21      /**
  22       * Graphics driver, GD, NetPBM or ImageMagick.
  23       */
  24      var $driver;
  25  
  26      /**
  27       * Thumbnail default width.
  28       */
  29      var $width = 96;
  30  
  31      /**
  32       * Thumbnail default height.
  33       */
  34      var $height = 96;
  35  
  36      /**
  37       * Thumbnail default JPEG quality.
  38       */
  39      var $quality = 85;
  40  
  41      /**
  42       * Thumbnail is proportional
  43       */
  44      var $proportional = true;
  45  
  46      /**
  47       * Default image type is JPEG.
  48       */
  49      var $type = 'jpeg';
  50  
  51      /**
  52       * Create a new Thumbnail instance.
  53       * @param int $width thumbnail width
  54       * @param int $height thumbnail height
  55       */
  56  	function Thumbnail($width=96, $height=96) 
  57      {
  58          $this->driver = Image_Transform::factory(IMAGE_CLASS);
  59          $this->width = $width;
  60          $this->height = $height;
  61      }
  62  
  63      /**
  64       * Create a thumbnail.
  65       * @param string $file the image for the thumbnail
  66       * @param string $thumbnail if not null, the thumbnail will be saved
  67       * as this parameter value.
  68       * @return boolean true if thumbnail is created, false otherwise
  69       */
  70  	function createThumbnail($file, $thumbnail=null) 
  71      {
  72          if(!is_file($file)) 
  73              Return false;
  74  
  75          //error_log('Creating Thumbs: '.$file);
  76  
  77          $this->driver->load($file);
  78  
  79          if($this->proportional) 
  80          {
  81              $width = $this->driver->img_x;
  82              $height = $this->driver->img_y;
  83  
  84              if ($width > $height)
  85                  $this->height = intval($this->width/$width*$height);
  86              else if ($height > $width)
  87                  $this->width = intval($this->height/$height*$width);
  88          }
  89  
  90          $this->driver->resize($this->width, $this->height);
  91  
  92          if(is_null($thumbnail)) 
  93              $this->save($file);
  94          else
  95              $this->save($thumbnail);
  96  
  97  
  98          $this->free();
  99  
 100          if(is_file($thumbnail)) 
 101              Return true;
 102          else
 103              Return false;
 104      }
 105  
 106      /**
 107       * Save the thumbnail file.
 108       * @param string $file file name to be saved as.
 109       */
 110  	function save($file) 
 111      {
 112          $this->driver->save($file);
 113      }
 114  
 115      /**
 116       * Free up the graphic driver resources.
 117       */
 118  	function free() 
 119      {
 120          $this->driver->free();
 121      }
 122  }
 123  
 124  
 125  ?>