+
+ /**
+ * Calculate width and height based on what the currently selected theme supports.
+ *
+ * @return array dst_height and dst_width of header image.
+ */
+ final public function get_header_dimensions( $dimensions ) {
+ $max_width = 0;
+ $width = absint( $dimensions['width'] );
+ $height = absint( $dimensions['height'] );
+ $theme_height = get_theme_support( 'custom-header', 'height' );
+ $theme_width = get_theme_support( 'custom-header', 'width' );
+ $has_flex_width = current_theme_supports( 'custom-header', 'flex-width' );
+ $has_flex_height = current_theme_supports( 'custom-header', 'flex-height' );
+ $has_max_width = current_theme_supports( 'custom-header', 'max-width' ) ;
+ $dst = array( 'dst_height' => null, 'dst_height' => null );
+
+ // For flex, limit size of image displayed to 1500px unless theme says otherwise
+ if ( $has_flex_width ) {
+ $max_width = 1500;
+ }
+
+ if ( $has_max_width ) {
+ $max_width = max( $max_width, get_theme_support( 'custom-header', 'max-width' ) );
+ }
+ $max_width = max( $max_width, $theme_width );
+
+ if ( $has_flex_height && ( ! $has_flex_width || $width > $max_width ) ) {
+ $dst['dst_height'] = absint( $height * ( $max_width / $width ) );
+ }
+ elseif ( $has_flex_height && $has_flex_width ) {
+ $dst['dst_height'] = $height;
+ }
+ else {
+ $dst['dst_height'] = $theme_height;
+ }
+
+ if ( $has_flex_width && ( ! $has_flex_height || $width > $max_width ) ) {
+ $dst['dst_width'] = absint( $width * ( $max_width / $width ) );
+ }
+ elseif ( $has_flex_width && $has_flex_height ) {
+ $dst['dst_width'] = $width;
+ }
+ else {
+ $dst['dst_width'] = $theme_width;
+ }
+
+ return $dst;
+ }
+
+ /**
+ * Create an attachment 'object'.
+ *
+ * @param string $cropped Cropped image URL.
+ * @param int $parent_attachment_id Attachment ID of parent image.
+ *
+ * @return array Attachment object.
+ */
+ final public function create_attachment_object( $cropped, $parent_attachment_id ) {
+ $parent = get_post( $parent_attachment_id );
+ $parent_url = $parent->guid;
+ $url = str_replace( basename( $parent_url ), basename( $cropped ), $parent_url );
+
+ $size = @getimagesize( $cropped );
+ $image_type = ( $size ) ? $size['mime'] : 'image/jpeg';
+
+ $object = array(
+ 'ID' => $parent_attachment_id,
+ 'post_title' => basename($cropped),
+ 'post_content' => $url,
+ 'post_mime_type' => $image_type,
+ 'guid' => $url,
+ 'context' => 'custom-header'
+ );
+
+ return $object;
+ }
+
+ /**
+ * Insert an attachment & its metadata.
+ *
+ * @param array $object Attachment object.
+ * @param string $cropped Cropped image URL.
+ *
+ * @return int Attachment ID.
+ */
+ final public function insert_attachment( $object, $cropped ) {
+ $attachment_id = wp_insert_attachment( $object, $cropped );
+ $metadata = wp_generate_attachment_metadata( $attachment_id, $cropped );
+ /**
+ * Allows us to insert custom meta data for an attachment.
+ *
+ */
+ $metadata = apply_filters( 'wp_header_image_attachment_metadata', $metadata );
+ wp_update_attachment_metadata( $attachment_id, $metadata );
+ return $attachment_id;
+ }
+
+ /**
+ * Gets attachment uploaded by Media Manager, crops it, then saves it as a
+ * new object. Returns JSON-encoded object details.
+ */
+ function ajax_header_crop() {
+ check_ajax_referer( 'image_editor-' . $_POST['id'], 'nonce' );
+
+ if ( ! current_user_can( 'edit_theme_options' ) ) {
+ wp_send_json_error();
+ }
+
+ if ( ! current_theme_supports( 'custom-header', 'uploads' ) ) {
+ wp_send_json_error();
+ }
+
+ $crop_details = $_POST['cropDetails'];
+
+ $dimensions = $this->get_header_dimensions( array(
+ 'height' => $crop_details['height'],
+ 'width' => $crop_details['width'],
+ ) );
+
+ $attachment_id = absint( $_POST['id'] );
+
+ $cropped = wp_crop_image(
+ $attachment_id,
+ (int) $crop_details['x1'],
+ (int) $crop_details['y1'],
+ (int) $crop_details['width'],
+ (int) $crop_details['height'],
+ (int) $dimensions['dst_width'],
+ (int) $dimensions['dst_height']
+ );
+
+ if ( ! $cropped || is_wp_error( $cropped ) ) {
+ wp_send_json_error( array( 'message' => __( 'Image could not be processed. Please go back and try again.' ) ) );
+ }
+
+ $cropped = apply_filters( 'wp_create_file_in_uploads', $cropped, $attachment_id ); // For replication
+
+ $object = $this->create_attachment_object( $cropped, $attachment_id );
+
+ unset( $object['ID'] );
+
+ $new_attachment_id = $this->insert_attachment( $object, $cropped );
+
+ $object['attachment_id'] = $new_attachment_id;
+ $object['width'] = $dimensions['dst_width'];
+ $object['height'] = $dimensions['dst_height'];
+
+ wp_send_json_success( $object );
+ }
+
+ /**
+ * Given an attachment ID for a header image, updates its "last used"
+ * timestamp to now.
+ *
+ * Triggered when the user tries adds a new header image from the
+ * Media Manager, even if s/he doesn't save that change.
+ */
+ function ajax_header_add() {
+ check_ajax_referer( 'header-add', 'nonce' );
+
+ if ( ! current_user_can( 'edit_theme_options' ) ) {
+ wp_send_json_error();
+ }
+
+ $attachment_id = absint( $_POST['attachment_id'] );
+ if ( $attachment_id < 1 ) {
+ wp_send_json_error();
+ }
+
+ $key = '_wp_attachment_custom_header_last_used_' . get_stylesheet();
+ update_post_meta( $attachment_id, $key, time() );
+ update_post_meta( $attachment_id, '_wp_attachment_is_custom_header', get_stylesheet() );
+
+ wp_send_json_success();
+ }
+
+ /**
+ * Given an attachment ID for a header image, unsets it as a user-uploaded
+ * header image for the current theme.
+ *
+ * Triggered when the user clicks the overlay "X" button next to each image
+ * choice in the Customizer's Header tool.
+ */
+ function ajax_header_remove() {
+ check_ajax_referer( 'header-remove', 'nonce' );
+
+ if ( ! current_user_can( 'edit_theme_options' ) ) {
+ wp_send_json_error();
+ }
+
+ $attachment_id = absint( $_POST['attachment_id'] );
+ if ( $attachment_id < 1 ) {
+ wp_send_json_error();
+ }
+
+ $key = '_wp_attachment_custom_header_last_used_' . get_stylesheet();
+ delete_post_meta( $attachment_id, $key );
+ delete_post_meta( $attachment_id, '_wp_attachment_is_custom_header', get_stylesheet() );
+
+ wp_send_json_success();
+ }
+
+ function customize_set_last_used( $wp_customize ) {
+ $data = $wp_customize->get_setting( 'header_image_data' )->post_value();
+
+ if ( ! isset( $data['attachment_id'] ) ) {
+ return;
+ }
+
+ $attachment_id = $data['attachment_id'];
+ $key = '_wp_attachment_custom_header_last_used_' . get_stylesheet();
+ update_post_meta( $attachment_id, $key, time() );
+ }
+
+ public function get_default_header_images() {
+ $this->process_default_headers();
+
+ // Get the default image if there is one.
+ $default = get_theme_support( 'custom-header', 'default-image' );
+
+ if ( ! $default ) { // If not,
+ return $this->default_headers; // easy peasy.
+ }
+
+ $default = sprintf( $default, get_template_directory_uri(), get_stylesheet_directory_uri() );
+ $already_has_default = false;
+
+ foreach ( $this->default_headers as $k => $h ) {
+ if ( $h['url'] === $default ) {
+ $already_has_default = true;
+ break;
+ }
+ }
+
+ if ( $already_has_default ) {
+ return $this->default_headers;
+ }
+
+ // If the one true image isn't included in the default set, prepend it.
+ $header_images = array();
+ $header_images['default'] = array(
+ 'url' => $default,
+ 'thumbnail_url' => $default,
+ 'description' => 'Default'
+ );
+
+ // The rest of the set comes after.
+ $header_images = array_merge( $header_images, $this->default_headers );
+ return $header_images;
+ }
+
+ public function get_uploaded_header_images() {
+ $header_images = get_uploaded_header_images();
+ $timestamp_key = '_wp_attachment_custom_header_last_used_' . get_stylesheet();
+ $alt_text_key = '_wp_attachment_image_alt';
+
+ foreach ( $header_images as &$header_image ) {
+ $header_meta = get_post_meta( $header_image['attachment_id'] );
+ $header_image['timestamp'] = isset( $header_meta[ $timestamp_key ] ) ? $header_meta[ $timestamp_key ] : '';
+ $header_image['alt_text'] = isset( $header_meta[ $alt_text_key ] ) ? $header_meta[ $alt_text_key ] : '';
+ }
+
+ return $header_images;
+ }
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