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Editing: cover.php
<?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 ) { // Handle embed video background. if ( isset( $attributes['backgroundType'] ) && 'embed-video' === $attributes['backgroundType'] && isset( $attributes['url'] ) && ! empty( $attributes['url'] ) && is_string( $attributes['url'] ) ) { $url = $attributes['url']; // Use WordPress's native oEmbed processing (includes caching). $oembed_html = wp_oembed_get( $url ); if ( $oembed_html ) { // Extract iframe src from the oEmbed HTML. preg_match( '/src=["\']([^"\']+)["\']/', $oembed_html, $src_matches ); if ( ! empty( $src_matches[1] ) ) { $iframe_src = $src_matches[1]; // Detect provider from iframe src URL. $lower_src = strtolower( $iframe_src ); $provider = null; if ( str_contains( $lower_src, 'youtube.com' ) || str_contains( $lower_src, 'youtu.be' ) ) { $provider = 'youtube'; } elseif ( str_contains( $lower_src, 'vimeo.com' ) ) { $provider = 'vimeo'; } elseif ( str_contains( $lower_src, 'videopress.com' ) ) { $provider = 'videopress'; } elseif ( str_contains( $lower_src, 'wordpress.tv' ) ) { $provider = 'wordpress-tv'; } // Modify iframe src to add background video parameters based on provider. $parsed_url = wp_parse_url( $iframe_src ); if ( $parsed_url && isset( $parsed_url['host'] ) ) { // Parse existing query parameters. $query_params = array(); if ( isset( $parsed_url['query'] ) ) { parse_str( $parsed_url['query'], $query_params ); } // Add background video parameters based on provider. if ( 'youtube' === $provider ) { $query_params['autoplay'] = '1'; $query_params['mute'] = '1'; $query_params['loop'] = '1'; $query_params['controls'] = '0'; $query_params['modestbranding'] = '1'; $query_params['playsinline'] = '1'; // For loop to work, we need the playlist parameter. $path = $parsed_url['path'] ?? ''; $path_segments = explode( '/', $path ); $video_id = end( $path_segments ); if ( $video_id ) { $query_params['playlist'] = $video_id; } } elseif ( 'vimeo' === $provider ) { $query_params['autoplay'] = '1'; $query_params['muted'] = '1'; $query_params['loop'] = '1'; $query_params['background'] = '1'; $query_params['controls'] = '0'; $query_params['transparent'] = '0'; } elseif ( 'videopress' === $provider || 'wordpress-tv' === $provider ) { $query_params['autoplay'] = '1'; $query_params['loop'] = '1'; $query_params['muted'] = '1'; } // Rebuild the URL with new parameters. $iframe_src = $parsed_url['scheme'] . '://' . $parsed_url['host']; if ( isset( $parsed_url['path'] ) ) { $iframe_src .= $parsed_url['path']; } if ( ! empty( $query_params ) ) { $iframe_src .= '?' . http_build_query( $query_params ); } } // Build the iframe HTML that will replace the figure. $iframe_html = sprintf( '<div class="wp-block-cover__video-background wp-block-cover__embed-background"><iframe src="%s" title="Background video" frameborder="0" allow="autoplay; fullscreen"></iframe></div>', esc_url( $iframe_src ) ); // Use the HTML API to find and replace the figure.wp-block-embed element. $processor = new WP_HTML_Tag_Processor( $content ); if ( $processor->next_tag( array( 'tag_name' => 'FIGURE', 'class_name' => 'wp-block-embed', ) ) ) { // Use regex with PREG_OFFSET_CAPTURE to find the position of the figure element. // This follows the same pattern used for featured image insertion below. $figure_pattern = '/<figure\s+[^>]*\bwp-block-embed\b[^>]*>.*?<\/figure>/is'; if ( 1 === preg_match( $figure_pattern, $content, $matches, PREG_OFFSET_CAPTURE ) ) { $figure_start = $matches[0][1]; $figure_length = strlen( $matches[0][0] ); $figure_end = $figure_start + $figure_length; // Replace the figure element with the iframe HTML. $content = substr( $content, 0, $figure_start ) . $iframe_html . substr( $content, $figure_end ); } } } } return $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'] ?? 'full' ); 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' );
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