Ticket #3588: 3588.diff

wp-admin/admin-functions.php

@@ -2077 +2077 @@
                 $metadata['hwstring_small'] = "height='$uheight' width='$uwidth'";
                 $metadata['file'] = $file;
 
-                if ( $metadata['width'] * $metadata['height'] < 3 * 1024 * 1024 ) {
-                        if ( $metadata['width'] > 128 && $metadata['width'] >= $metadata['height'] * 4 / 3 )
-                                $thumb = wp_create_thumbnail($file, 128);
-                        elseif ( $metadata['height'] > 96 )
-                                $thumb = wp_create_thumbnail($file, 96);
+                $max = apply_filters( 'wp_thumbnail_creation_size_limit', 3 * 1024 * 1024, $attachment_id, $file );
 
+                if ( $max > 0 && $metadata['width'] * $metadata['height'] < $max ) {
+                        $max_side = apply_filters( 'wp_thumbnail_max_side_length', 128, $attachment_id, $file );
+                        $thumb = wp_create_thumbnail( $file, $max_side );
+
                         if ( @file_exists($thumb) )
                                 $metadata['thumb'] = basename($thumb);
                 }