Ticket #21038: theme.php.patch

wp-includes/theme.php

@@ -1355 +1355 @@
                                 define( 'BACKGROUND_IMAGE', $args[0]['default-image'] );
 
                         break;
+
+                case 'high-density-screens' :
+                        add_action( 'after_setup_theme', 'wp_register_2x_image_sizes', 100 );
         }
 
         $_wp_theme_features[ $feature ] = $args;
@@ -1695 +1698 @@
                 }());
         </script>
         <?php
+}
+
+/**
+ * Adds an @2x image size for all image sizes registered through add_image_size().
+ *
+ *
+ */
+
+function wp_register_2x_image_sizes() {
+        if ( ! current_theme_supports( 'high-density-screens' ) )
+                return;
+
+        global $_wp_additional_image_sizes;
+        $image_sizes = get_intermediate_image_sizes();
+
+        foreach( $image_sizes as $image_size ) {
+
+                switch ( $image_size ) {
+                        case 'large' :
+                                add_image_size( 'large@2x', intval( get_option( 'large_size_w' ) ) * 2, intval( get_option( 'large_size_h' ) ) * 2, false );
+                                break;
+
+                        case 'medium' :
+                                add_image_size( 'medium@2x', intval( get_option( 'medium_size_w' ) ) * 2, intval( get_option( 'medium_size_h' ) ) * 2, false );
+                                break;
+
+                        case 'thumbnail' :
+                                add_image_size( 'thumbnail@2x', intval( get_option( 'thumbnail_size_w' ) ) * 2, intval( get_option( 'thumbnail_size_h' ) ) * 2, true );
+                                break;
+
+                        default :
+                                add_image_size( $image_size . '@2x', $_wp_additional_image_sizes[ $image_size ]['width'] * 2, $_wp_additional_image_sizes[ $image_size ]['height'] * 2, $_wp_additional_image_sizes[ $image_size ]['crop'] );
+                                break;
+                }
+
+        }
 }
+ No newline at end of file