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<?php |
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/** |
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* Image Compare Block. |
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* |
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* @since 8.6 |
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* |
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* @package Jetpack |
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*/ |
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namespace Automattic\Jetpack\Extensions\ImageCompare; |
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use Automattic\Jetpack\Blocks; |
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use Jetpack_Gutenberg; |
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const FEATURE_NAME = 'image-compare'; |
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const BLOCK_NAME = 'jetpack/' . FEATURE_NAME; |
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/** |
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* Registers the block for use in Gutenberg |
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* This is done via an action so that we can disable |
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* registration if we need to. |
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*/ |
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function register_block() { |
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Blocks::jetpack_register_block( |
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BLOCK_NAME, |
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array( 'render_callback' => __NAMESPACE__ . '\load_assets' ) |
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); |
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} |
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add_action( 'init', __NAMESPACE__ . '\register_block' ); |
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/** |
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* Image Compare block registration/dependency declaration. |
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* |
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* @param array $attr Array containing the image-compare block attributes. |
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* @param string $content String containing the image-compare block content. |
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* |
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* @return string |
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*/ |
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function load_assets( $attr, $content ) { |
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Jetpack_Gutenberg::load_assets_as_required( FEATURE_NAME ); |
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if ( Blocks::is_amp_request() ) { |
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$content = preg_replace( |
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'#<div class="juxtapose".+?</div>#s', |
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render_amp( $attr ), |
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$content |
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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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* Localisation for block |
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* |
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* @return void |
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*/ |
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function block_localization_assets() { |
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?> |
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<script> |
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var imageCompareHandle = '<?php esc_attr_e( 'Slide to compare images', 'jetpack' ); ?>'; |
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</script> |
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<?php |
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} |
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add_action( 'wp_head', __NAMESPACE__ . '\block_localization_assets' ); |
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add_action( 'enqueue_block_editor_assets', __NAMESPACE__ . '\block_localization_assets' ); |
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/** |
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* Render image compare block for AMP |
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* |
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* @param array $attr Array containing the image-compare block attributes. |
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* |
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* @return string Markup for amp-image-slider. |
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*/ |
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function render_amp( $attr ) { |
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$img_before = $attr['imageBefore']; |
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$img_after = $attr['imageAfter']; |
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$width = ! empty( $img_before['width'] ) ? absint( $img_before['width'] ) : 0; |
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$height = ! empty( $img_before['height'] ) ? absint( $img_before['height'] ) : 0; |
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// As fallback, give 1:1 aspect ratio. |
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if ( ! $width || ! $height ) { |
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$width = 1; |
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$height = 1; |
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} |
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return sprintf( |
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'<amp-image-slider layout="responsive" width="%1$s" height="%2$s"> <amp-img id="%3$d" src="%4$s" alt="%5$s" layout="fill"></amp-img> <amp-img id="%6$d" src="%7$s" alt="%8$s" layout="fill"></amp-img></amp-image-slider>', |
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esc_attr( $width ), |
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esc_attr( $height ), |
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absint( $img_before['id'] ), |
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esc_url( $img_before['url'] ), |
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esc_attr( $img_before['alt'] ), |
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absint( $img_after['id'] ), |
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esc_url( $img_after['url'] ), |
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esc_attr( $img_after['alt'] ) |
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); |
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} |
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Automattic /
jetpack
