Changeset 33807 for trunk/src/wp-includes/media.php

Timestamp:

08/30/2015 02:40:40 AM (9 years ago)

Author:

wonderboymusic

Message:

Improve the reliability of the crop returned by image_get_intermediate_size().

Add a bunch of unit tests to tests/image/intermediate_size.php.

Props joemcgill, ericlewis, kitchin, SergeyBiryukov, chipbennett.
Fixes #17626.

File:

• trunk/src/wp-includes/media.php (modified) (1 diff)

trunk/src/wp-includes/media.php

@@ -608 +608 @@
     // get the best one for a specified set of dimensions
     if ( is_array($size) && !empty($imagedata['sizes']) ) {
-        $areas = array();
+        $candidates = array();
 
         foreach ( $imagedata['sizes'] as $_size => $data ) {
-            // already cropped to width or height; so use this size
-            if ( ( $data['width'] == $size[0] && $data['height'] <= $size[1] ) || ( $data['height'] == $size[1] && $data['width'] <= $size[0] ) ) {
+            // If there's an exact match to an existing image size, short circuit.
+            if ( $data['width'] == $size[0] && $data['height'] == $size[1] ) {
                 $file = $data['file'];
                 list($width, $height) = image_constrain_size_for_editor( $data['width'], $data['height'], $size );
                 return compact( 'file', 'width', 'height' );
             }
-            // add to lookup table: area => size
-            $areas[$data['width'] * $data['height']] = $_size;
-        }
-        if ( !$size || !empty($areas) ) {
+            // If it's not an exact match but it's at least the dimensions requested.
+            if ( $data['width'] >= $size[0] && $data['height'] >= $size[1] ) {
+                $candidates[ $data['width'] * $data['height'] ] = $_size;
+            }
+        }
+
+        if ( ! empty( $candidates ) ) {
             // find for the smallest image not smaller than the desired size
-            ksort($areas);
-            foreach ( $areas as $_size ) {
+            ksort( $candidates );
+            foreach ( $candidates as $_size ) {
                 $data = $imagedata['sizes'][$_size];
-                if ( $data['width'] >= $size[0] || $data['height'] >= $size[1] ) {
-                    // Skip images with unexpectedly divergent aspect ratios (crops)
-                    // First, we calculate what size the original image would be if constrained to a box the size of the current image in the loop
-                    $maybe_cropped = image_resize_dimensions($imagedata['width'], $imagedata['height'], $data['width'], $data['height'], false );
-                    // If the size doesn't match within one pixel, then it is of a different aspect ratio, so we skip it, unless it's the thumbnail size
-                    if ( 'thumbnail' != $_size && ( !$maybe_cropped || ( $maybe_cropped[4] != $data['width'] && $maybe_cropped[4] + 1 != $data['width'] ) || ( $maybe_cropped[5] != $data['height'] && $maybe_cropped[5] + 1 != $data['height'] ) ) )
-                        continue;
-                    // If we're still here, then we're going to use this size
-                    $file = $data['file'];
-                    list($width, $height) = image_constrain_size_for_editor( $data['width'], $data['height'], $size );
-                    return compact( 'file', 'width', 'height' );
+
+                // Skip images with unexpectedly divergent aspect ratios (crops)
+                // First, we calculate what size the original image would be if constrained to a box the size of the current image in the loop
+                $maybe_cropped = image_resize_dimensions($imagedata['width'], $imagedata['height'], $data['width'], $data['height'], false );
+                // If the size doesn't match within one pixel, then it is of a different aspect ratio, so we skip it, unless it's the thumbnail size
+                if ( 'thumbnail' != $_size &&
+                  ( ! $maybe_cropped
+                    || ( $maybe_cropped[4] != $data['width'] && $maybe_cropped[4] + 1 != $data['width'] )
+                    || ( $maybe_cropped[5] != $data['height'] && $maybe_cropped[5] + 1 != $data['height'] )
+                  ) ) {
+                  continue;
                 }
+                // If we're still here, then we're going to use this size
+                $file = $data['file'];
+                list( $width, $height ) = image_constrain_size_for_editor( $data['width'], $data['height'], $size );
+                return compact( 'file', 'width', 'height' );
             }
         }