[Sommaire] [Imprimer]

   1  <?php
   2  /*
   3  + ----------------------------------------------------------------------------+
   4  |     e107 website system
   5  |
   6  |     ©Steve Dunstan 2001-2002
   7  |     http://e107.org
   8  |     jalist@e107.org
   9  |
  10  |     Released under the terms and conditions of the
  11  |     GNU General Public License (http://gnu.org).
  12  |
  13  |     $Source: /cvsroot/e107/e107_0.7/e107_handlers/resize_handler.php,v $
  14  |     $Revision: 1.5 $
  15  |     $Date: 2005/12/14 17:37:34 $
  16  |     $Author: sweetas $
  17  +----------------------------------------------------------------------------+
  18  */
  19  if (!defined('e107_INIT')) { exit; }
  20  
  21  /* 07-04-2004 - unknown: removed source/destination file rewriting, this should not break existing code */
  22  /* 09-04-2004 - unknown: source/destination file should be quoted, otherwise files with spaces can't be handled */
  23  function resize_image($source_file, $destination_file, $type = "upload", $model = "") {
  24       
  25      global $pref;
  26       
  27      $new_height = 0;
  28      $mode = ($pref['resize_method'] ? $pref['resize_method'] : "gd2");
  29      if ($type == "upload") {
  30          $new_size = ($pref['im_width'] ? $pref['im_width'] : 400);
  31      }
  32      else if(is_numeric($type)) {
  33          $new_size = $type;
  34      } else {
  35          $new_size = ($pref['im_width'] ? $pref['im_width'] : 120);
  36          //avatar
  37          $new_height = ($pref['im_height'] ? $pref['im_height'] : 100);
  38          //avatar
  39      }
  40       
  41      $im_quality = ($pref['im_quality'] ? $pref['im_quality'] : 99);
  42       
  43      $image_stats = getimagesize($source_file);
  44       
  45      if ($image_stats[0] <= $type && is_numeric($type)) {
  46          return false;
  47      }
  48       
  49      if ($image_stats == null) {
  50          echo "<b>DEBUG</b> image_stats are null<br />";
  51          return false;
  52      }
  53       
  54      if ($image_stats[2] != 1 && $image_stats[2] != 2 && $image_stats[2] != 3 && ($mode == 'gd1' || $mode == 'gd2')) {
  55          echo "<b>DEBUG</b> Wrong image type<br />";
  56          return FALSE;
  57      }
  58      $imagewidth = $image_stats[0];
  59      $imageheight = $image_stats[1];
  60      if ($imagewidth <= $new_size && ($imageheight <= $new_height || $new_height == 0)) {
  61          return TRUE;
  62      }
  63      $ratio = ($imagewidth / $new_size);
  64      $new_imageheight = round($imageheight / $ratio);
  65      if (($new_height <= $new_imageheight) && $new_height > 0) {
  66          $ratio = $new_imageheight / $new_height;
  67          $new_imageheight = $new_height;
  68          $new_size = round($new_size / $ratio);
  69           
  70      }
  71      if ($mode == "ImageMagick") {
  72          if ($destination_file == "stdout") {
  73              /* if destination is stdout, output directly to the browser */
  74              $destination_file = "jpg:-";
  75              header("Content-type: image/jpeg");
  76              passthru ($pref['im_path']."convert -quality ".$im_quality." -antialias -geometry ".$new_size."x".$new_imageheight." ".escapeshellarg($source_file)." '".$destination_file."'");
  77          } else {
  78              /* otherwise output to file */
  79              if ($model == "copy") {
  80                  $name = substr($destination_file, (strrpos($destination_file, "/")+1));
  81                  $name2 = "thumb_".$name;
  82                  $destination_file = str_replace($name, $name2, $destination_file);
  83              }
  84              exec ($pref['im_path']."convert -quality ".$im_quality." -antialias -geometry ".$new_size."x".$new_imageheight." ".escapeshellarg($source_file)." '".$destination_file."'");
  85               
  86          }
  87      }
  88      else if($mode == "gd1") {
  89          if ($image_stats[2] == 2)
  90          $src_img = imagecreatefromjpeg($source_file);
  91          else
  92              $src_img = imagecreatefrompng($source_file);
  93          if (!$src_img) {
  94              return FALSE;
  95          }
  96          $dst_img = imagecreate($new_size, $new_imageheight);
  97          imagecopyresized($dst_img, $src_img, 0, 0, 0, 0, $new_size, $new_imageheight, $imagewidth, $imageheight);
  98          if ($model == "copy") {
  99              $name = substr($destination_file, (strrpos($destination_file, "/")+1));
 100              $name2 = "thumb_".$name;
 101              $destination_file = str_replace($name, $name2, $destination_file);
 102          }
 103           
 104          if ($destination_file == "stdout") {
 105              header("Content-type: image/jpeg");
 106              imagejpeg($dst_img, '', $im_quality);
 107          } else {
 108              imagejpeg($dst_img, $destination_file, $im_quality);
 109              imagedestroy($src_img);
 110              imagedestroy($dst_img);
 111          }
 112           
 113      }
 114      else if($mode == "gd2") {
 115           
 116          if ($image_stats[2] == 2)
 117              $src_img = imagecreatefromjpeg($source_file);
 118          else
 119              $src_img = imagecreatefrompng($source_file);
 120          if (!$src_img) {
 121              return FALSE;
 122          }
 123           
 124          $dst_img = imagecreatetruecolor($new_size, $new_imageheight);
 125          imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $new_size, $new_imageheight, $imagewidth, $imageheight);
 126           
 127          if ($model == "copy") {
 128              $name = substr($destination_file, (strrpos($destination_file, "/")+1));
 129              $name2 = "thumb_".$name;
 130              $destination_file = str_replace($name, $name2, $destination_file);
 131          }
 132          if ($destination_file == "stdout") {
 133              header("Content-type: image/jpeg");
 134              imagejpeg($dst_img, '', $im_quality);
 135          } else {
 136              imagejpeg($dst_img, $destination_file, $im_quality);
 137              imagedestroy($src_img);
 138              imagedestroy($dst_img);
 139          }
 140      }
 141       
 142      @chmod($destination_file, 0644);
 143      if ($pref['image_owner']) {
 144          @chown($destination_file, $pref['image_owner']);
 145      }
 146       
 147      $image_stats = getimagesize($destination_file);
 148      if ($image_stats == null) {
 149          //                @unlink($source_file);
 150          return FALSE;
 151      } else {
 152          return TRUE;
 153      }
 154  }
 155  ?>