Ticket #21694: 21694.4.diff

wp-content/themes/twentytwelve/style.css

@@ -437 +437 @@
 body {
         font-size: 14px;
         font-size: 1rem;
-        font-family: "Open Sans", Helvetica, Arial, sans-serif;
+        font-family: Helvetica, Arial, sans-serif;
         text-rendering: optimizeLegibility;
         color: #444;
 }
+body.custom-font-enabled {
+        font-family: "Open Sans", Helvetica, Arial, sans-serif;
+}
 a {
         outline: none;
         color: #21759b;

wp-content/themes/twentytwelve/functions.php

@@ -102 +102 @@
 
         /*
          * Loads our special font CSS file.
+         *
+         * To disable in a child theme, use wp_dequeue_style()
+         * function mytheme_dequeue_fonts() {
+         *     wp_dequeue_style( 'twentytwelve-fonts' );
+         * }
+         * add_action( 'wp_enqueue_scripts', 'mytheme_dequeue_fonts', 11 );
          */
         $protocol = is_ssl() ? 'https' : 'http';
         wp_enqueue_style( 'twentytwelve-fonts', "$protocol://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700", array(), null );
@@ -376 +382 @@
         elseif ( in_array( $background_color, array( 'fff', 'ffffff' ) ) )
                 $classes[] = 'custom-background-white';
 
+        // Enable custom font class only if the font CSS is queued to load.
+        if ( wp_style_is( 'twentytwelve-fonts', 'queued' ) )
+                $classes[] = 'custom-font-enabled';
+
         return $classes;
 }
 add_filter( 'body_class', 'twentytwelve_body_class' );