Changeset 17757 for trunk/wp-includes/theme.php

Timestamp:

04/28/2011 11:02:16 PM (14 years ago)

Author:

ryan

Message:

Allow selecting previously uploader headers and randomly serving previously uploaded or default headers. Props lancewillett. see #17240

File:

• trunk/wp-includes/theme.php (modified) (3 diffs)

trunk/wp-includes/theme.php

@@ -1428 +1428 @@
 function get_header_image() {
     $default = defined( 'HEADER_IMAGE' ) ? HEADER_IMAGE : '';
-
     $url = get_theme_mod( 'header_image', $default );
+
+    if ( is_random_header_image() )
+        $url = get_random_header_image();
 
     if ( is_ssl() )
@@ -1440 +1442 @@
 
 /**
+ * Get random header image from registered images in theme.
+ *
+ * @since 3.2
+ *
+ * @return string Path to header image
+ */
+function get_random_header_image() {
+    global $_wp_default_headers;
+
+    $header_image_mod = get_theme_mod( 'header_image', '' );
+    $headers = array();
+
+    if ( 'random-uploaded-image' == $header_image_mod )
+        $headers = get_uploaded_header_images();
+    elseif ( ! empty( $_wp_default_headers ) )
+        $headers = $_wp_default_headers;
+
+    if ( empty( $headers ) )
+        return '';
+
+    $random_image = array_rand( $headers );
+    $header_url = sprintf( $headers[$random_image]['url'], get_template_directory_uri(), get_stylesheet_directory_uri() );
+
+    return $header_url;
+}
+
+/**
+ * Check if random header image is in use.
+ *
+ * Always true if user expressly chooses the option in Appearance > Header.
+ * Also true if theme has multiple header images registered and no specific header image is chosen.
+ *
+ * @since 3.2
+ * @uses HEADER_IMAGE
+ *
+ * @param string $type The random pool to use. any|default|uploaded
+ * @return boolean
+ */
+function is_random_header_image( $type = 'any' ) {
+    $default = defined( 'HEADER_IMAGE' ) ? HEADER_IMAGE : '';
+    $header_image_mod = get_theme_mod( 'header_image', $default );
+
+    if ( 'any' == $type ) {
+        if ( 'random-default-image' == $header_image_mod || 'random-uploaded-image' == $header_image_mod || ( '' != get_random_header_image() && empty( $header_image_mod ) ) )
+            return true;
+    } else {
+        if ( "random-$type-image" == $header_image_mod )
+            return true;
+    }
+
+    return false;
+}
+
+/**
  * Display header image path.
  *
@@ -1446 +1502 @@
 function header_image() {
     echo get_header_image();
+}
+
+/**
+ * Get the header images uploaded for the current theme.
+ *
+ * @since 3.2.0
+ *
+ * @return array
+ */
+function get_uploaded_header_images() {
+    $header_images = array();
+
+    // @todo caching
+    $headers = get_posts( array( 'post_type' => 'attachment', 'meta_key' => '_wp_attachment_is_custom_header', 'meta_value' => get_option('stylesheet'), 'orderby' => 'none', 'nopaging' => true ) );
+
+    if ( empty( $headers ) )
+        return array();
+
+    foreach ( (array) $headers as $header ) {
+        $url = $header->guid;
+        $header = basename($url);
+        $header_images[$header] = array();
+        $header_images[$header]['url'] =  $url;
+        $header_images[$header]['thumbnail_url'] =  $url;
+        $header_images[$header]['uploaded'] = true;
+    }
+
+    return $header_images;
 }