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<?php /** * Server-side rendering of the `core/cover` block. * * @package WordPress */ /** * Renders the `core/cover` block on server. * * @since 6.0.0 * * @param array $attributes The block attributes. * @param string $content The block rendered content. * * @return string Returns the cover block markup, if useFeaturedImage is true. */ function render_block_core_cover( $attributes, $content ) { if ( 'image' !== $attributes['backgroundType'] || false === $attributes['useFeaturedImage'] ) { return $content; } $object_position = isset( $attributes['focalPoint'] ) ? round( $attributes['focalPoint']['x'] * 100 ) . '% ' . round( $attributes['focalPoint']['y'] * 100 ) . '%' : null; if ( ! ( $attributes['hasParallax'] || $attributes['isRepeated'] ) ) { $attr = array( 'class' => 'wp-block-cover__image-background', 'data-object-fit' => 'cover', ); if ( $object_position ) { $attr['data-object-position'] = $object_position; $attr['style'] = 'object-position:' . $object_position . ';'; } $image = get_the_post_thumbnail( null, $attributes['sizeSlug'] ?? 'post-thumbnail', $attr ); } else { if ( in_the_loop() ) { update_post_thumbnail_cache(); } $current_featured_image = get_the_post_thumbnail_url( null, $attributes['sizeSlug'] ?? null ); if ( ! $current_featured_image ) { return $content; } $current_thumbnail_id = get_post_thumbnail_id(); $processor = new WP_HTML_Tag_Processor( '<div></div>' ); $processor->next_tag(); $current_alt = trim( strip_tags( get_post_meta( $current_thumbnail_id, '_wp_attachment_image_alt', true ) ) ); if ( $current_alt ) { $processor->set_attribute( 'role', 'img' ); $processor->set_attribute( 'aria-label', $current_alt ); } $processor->add_class( 'wp-block-cover__image-background' ); $processor->add_class( 'wp-image-' . $current_thumbnail_id ); if ( $attributes['hasParallax'] ) { $processor->add_class( 'has-parallax' ); } if ( $attributes['isRepeated'] ) { $processor->add_class( 'is-repeated' ); } $styles = 'background-position:' . ( $object_position ?? '50% 50%' ) . ';'; $styles .= 'background-image:url(' . esc_url( $current_featured_image ) . ');'; $processor->set_attribute( 'style', $styles ); $image = $processor->get_updated_html(); } /* * Inserts the featured image between the (1st) cover 'background' `span` and 'inner_container' `div`, * and removes eventual whitespace characters between the two (typically introduced at template level) */ $inner_container_start = '/<div\b[^>]+wp-block-cover__inner-container[\s|"][^>]*>/U'; if ( 1 === preg_match( $inner_container_start, $content, $matches, PREG_OFFSET_CAPTURE ) ) { $offset = $matches[0][1]; $content = substr( $content, 0, $offset ) . $image . substr( $content, $offset ); } return $content; } /** * Registers the `core/cover` block renderer on server. * * @since 6.0.0 */ function register_block_core_cover() { register_block_type_from_metadata( __DIR__ . '/cover', array( 'render_callback' => 'render_block_core_cover', ) ); } add_action( 'init', 'register_block_core_cover' );