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<?php |
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/** |
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* Server-side rendering of the `core/cover` block. |
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* |
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* @package WordPress |
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*/ |
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|
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/** |
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* Renders the `core/cover` block on server. |
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* |
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* @since 6.0.0 |
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* |
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* @param array $attributes The block attributes. |
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* @param string $content The block rendered content. |
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* |
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* @return string Returns the cover block markup, if useFeaturedImage is true. |
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*/ |
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function gutenberg_render_block_core_cover( $attributes, $content ) { |
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if ( 'image' !== $attributes['backgroundType'] || false === $attributes['useFeaturedImage'] ) { |
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return $content; |
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} |
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|
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if ( ! ( $attributes['hasParallax'] || $attributes['isRepeated'] ) ) { |
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$attr = array( |
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'class' => 'wp-block-cover__image-background', |
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'data-object-fit' => 'cover', |
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); |
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|
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if ( isset( $attributes['focalPoint'] ) ) { |
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$object_position = round( $attributes['focalPoint']['x'] * 100 ) . '% ' . round( $attributes['focalPoint']['y'] * 100 ) . '%'; |
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$attr['data-object-position'] = $object_position; |
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$attr['style'] = 'object-position: ' . $object_position; |
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} |
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|
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$image = get_the_post_thumbnail( null, 'post-thumbnail', $attr ); |
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|
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/* |
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* Inserts the featured image between the (1st) cover 'background' `span` and 'inner_container' `div`, |
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* and removes eventual whitespace characters between the two (typically introduced at template level) |
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*/ |
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$inner_container_start = '/<div\b[^>]+wp-block-cover__inner-container[\s|"][^>]*>/U'; |
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if ( 1 === preg_match( $inner_container_start, $content, $matches, PREG_OFFSET_CAPTURE ) ) { |
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$offset = $matches[0][1]; |
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$content = substr( $content, 0, $offset ) . $image . substr( $content, $offset ); |
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} |
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} else { |
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if ( in_the_loop() ) { |
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update_post_thumbnail_cache(); |
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} |
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$current_featured_image = get_the_post_thumbnail_url(); |
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if ( ! $current_featured_image ) { |
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return $content; |
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} |
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|
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$processor = new WP_HTML_Tag_Processor( $content ); |
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$processor->next_tag(); |
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|
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$styles = $processor->get_attribute( 'style' ); |
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$merged_styles = ! empty( $styles ) ? $styles . ';' : ''; |
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$merged_styles .= 'background-image:url(' . esc_url( $current_featured_image ) . ');'; |
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|
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$processor->set_attribute( 'style', $merged_styles ); |
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$content = $processor->get_updated_html(); |
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} |
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|
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return $content; |
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} |
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|
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/** |
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* Registers the `core/cover` block renderer on server. |
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* |
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* @since 6.0.0 |
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*/ |
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function gutenberg_register_block_core_cover() { |
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register_block_type_from_metadata( |
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__DIR__ . '/cover', |
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array( |
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'render_callback' => 'gutenberg_render_block_core_cover', |
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) |
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); |
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} |
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add_action( 'init', 'gutenberg_register_block_core_cover', 20 ); |
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|
