* (bug 2780) Fix thumbnail generation with GD for new image schema

[lhc/web/wiklou.git] / includes / Image.php

diff --git a/includes/Image.php b/includes/Image.php
index 02424dc..2812f47 100644 (file)
--- a/includes/Image.php
+++ b/includes/Image.php
@@ -1028,30 +1028,34 @@ class Image
                        # First find out what kind of file this is, and select the correct
                        # input routine for this.
 
-                       $truecolor = false;
+                       $typemap = array(
+                               'image/gif'          => array( 'imagecreatefromgif',  'palette',   'imagegif'  ),
+                               'image/jpeg'         => array( 'imagecreatefromjpeg', 'truecolor', array( &$this, 'imageJpegWrapper' ) ),
+                               'image/png'          => array( 'imagecreatefrompng',  'bits',      'imagepng'  ),
+                               'image/vnd.wap.wmbp' => array( 'imagecreatefromwbmp', 'palette',   'imagewbmp'  ),
+                               'image/xbm'          => array( 'imagecreatefromxbm',  'palette',   'imagexbm'  ),
+                       );
+                       if( !isset( $typemap[$this->mime] ) ) {
+                               $err = 'Image type not supported';
+                               wfDebug( "$err\n" );
+                               return $err;
+                       }
+                       list( $loader, $colorStyle, $saveType ) = $typemap[$this->mime];
                        
-                       switch( $this->type ) {
-                               case 1: # GIF
-                                       $src_image = imagecreatefromgif( $this->imagePath );
-                                       break;
-                               case 2: # JPG
-                                       $src_image = imagecreatefromjpeg( $this->imagePath );
-                                       $truecolor = true;
-                                       break;
-                               case 3: # PNG
-                                       $src_image = imagecreatefrompng( $this->imagePath );
-                                       $truecolor = ( $this->bits > 8 );
-                                       break;
-                               case 15: # WBMP for WML
-                                       $src_image = imagecreatefromwbmp( $this->imagePath );
-                                       break;
-                               case 16: # XBM
-                                       $src_image = imagecreatefromxbm( $this->imagePath );
-                                       break;
-                               default:
-                                       return 'Image type not supported';
-                                       break;
+                       if( !function_exists( $loader ) ) {
+                               $err = "Incomplete GD library configuration: missing function $loader";
+                               wfDebug( "$err\n" );
+                               return $err;
                        }
+                       if( $colorStyle == 'palette' ) {
+                               $truecolor = false;
+                       } elseif( $colorStyle == 'truecolor' ) {
+                               $truecolor = true;
+                       } elseif( $colorStyle == 'bits' ) {
+                               $truecolor = ( $this->bits > 8 );
+                       }
+                       
+                       $src_image = call_user_func( $loader, $this->imagePath );
                        if ( $truecolor ) {
                                $dst_image = imagecreatetruecolor( $width, $height );
                        } else {
@@ -1060,20 +1064,7 @@ class Image
                        imagecopyresampled( $dst_image, $src_image, 
                                                0,0,0,0,
                                                $width, $height, $this->width, $this->height );
-                       switch( $this->type ) {
-                               case 1:  # GIF
-                               case 3:  # PNG
-                               case 15: # WBMP
-                               case 16: # XBM
-                                       imagepng( $dst_image, $thumbPath );
-                                       break;
-                               case 2:  # JPEG
-                                       imageinterlace( $dst_image );
-                                       imagejpeg( $dst_image, $thumbPath, 95 );
-                                       break;
-                               default:
-                                       break;
-                       }
+                       call_user_func( $saveType, $dst_image, $thumbPath );
                        imagedestroy( $dst_image );
                        imagedestroy( $src_image );
                }
@@ -1090,6 +1081,11 @@ class Image
                }
        }
 
+       function imageJpegWrapper( $dst_image, $thumbPath ) {
+               imageinterlace( $dst_image );
+               imagejpeg( $dst_image, $thumbPath, 95 );
+       }
+               
        /** 
         * Get all thumbnail names previously generated for this image
         */