render_block_core_cover()WP 1.0

Renders the core/cover block on server.

No Hooks.

Return

String. Returns the cover block markup, if useFeaturedImage is true.

Usage

render_block_core_cover( $attributes, $content );
$attributes(array) (required)
The block attributes.
$content(string) (required)
The block rendered content.

Code of render_block_core_cover() WP 6.1.1

function render_block_core_cover( $attributes, $content ) {
	if ( 'image' !== $attributes['backgroundType'] || false === $attributes['useFeaturedImage'] ) {
		return $content;
	}

	if ( ! ( $attributes['hasParallax'] || $attributes['isRepeated'] ) ) {
		$attr = array(
			'class'           => 'wp-block-cover__image-background',
			'data-object-fit' => 'cover',
		);

		if ( isset( $attributes['focalPoint'] ) ) {
			$object_position              = round( $attributes['focalPoint']['x'] * 100 ) . '%' . ' ' . round( $attributes['focalPoint']['y'] * 100 ) . '%';
			$attr['data-object-position'] = $object_position;
			$attr['style']                = 'object-position: ' . $object_position;
		}

		$image = get_the_post_thumbnail( null, 'post-thumbnail', $attr );

		/*
		 * Inserts the featured image between the (1st) cover 'background' `span` and 'inner_container' `div`,
		 * and removes eventual withespace 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 );
		}
	} else {
		if ( in_the_loop() ) {
			update_post_thumbnail_cache();
		}
		$current_featured_image = get_the_post_thumbnail_url();

		$styles = 'background-image:url(' . esc_url( $current_featured_image ) . '); ';

		if ( isset( $attributes['minHeight'] ) ) {
			$height_unit = empty( $attributes['minHeightUnit'] ) ? 'px' : $attributes['minHeightUnit'];
			$height      = " min-height:{$attributes['minHeight']}{$height_unit}";

			$styles .= $height;
		}

		$content = preg_replace(
			'/class=\".*?\"/',
			'${0} style="' . $styles . '"',
			$content,
			1
		);
	}

	return $content;
}