mirror of
https://git.sindominio.net/estibadores/wordpress.git
synced 2024-09-20 07:14:01 +02:00
884 lines
26 KiB
PHP
884 lines
26 KiB
PHP
<?php
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/**
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* Useful for finding an image to display alongside/in representation of a specific post.
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*
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* Includes a few different methods, all of which return a similar-format array containing
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* details of any images found. Everything can (should) be called statically, it's just a
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* function-bucket. You can also call Jetpack_PostImages::get_image() to cycle through all of the methods until
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* one of them finds something useful.
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*
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* This file is included verbatim in Jetpack
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*/
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class Jetpack_PostImages {
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/**
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* If a slideshow is embedded within a post, then parse out the images involved and return them
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*/
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static function from_slideshow( $post_id, $width = 200, $height = 200 ) {
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$images = array();
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$post = get_post( $post_id );
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if ( ! $post ) {
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return $images;
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}
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if ( ! empty( $post->post_password ) ) {
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return $images;
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}
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if ( false === has_shortcode( $post->post_content, 'slideshow' ) ) {
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return $images; // no slideshow - bail
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}
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$permalink = get_permalink( $post->ID );
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// Mechanic: Somebody set us up the bomb
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$old_post = $GLOBALS['post'];
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$GLOBALS['post'] = $post;
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$old_shortcodes = $GLOBALS['shortcode_tags'];
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$GLOBALS['shortcode_tags'] = array( 'slideshow' => $old_shortcodes['slideshow'] );
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// Find all the slideshows
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preg_match_all( '/' . get_shortcode_regex() . '/sx', $post->post_content, $slideshow_matches, PREG_SET_ORDER );
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ob_start(); // The slideshow shortcode handler calls wp_print_scripts and wp_print_styles... not too happy about that
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foreach ( $slideshow_matches as $slideshow_match ) {
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$slideshow = do_shortcode_tag( $slideshow_match );
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if ( false === $pos = stripos( $slideshow, 'jetpack-slideshow' ) ) { // must be something wrong - or we changed the output format in which case none of the following will work
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continue;
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}
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$start = strpos( $slideshow, '[', $pos );
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$end = strpos( $slideshow, ']', $start );
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$post_images = json_decode( wp_specialchars_decode( str_replace( "'", '"', substr( $slideshow, $start, $end - $start + 1 ) ), ENT_QUOTES ) ); // parse via JSON
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// If the JSON didn't decode don't try and act on it.
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if ( is_array( $post_images ) ) {
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foreach ( $post_images as $post_image ) {
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if ( ! $post_image_id = absint( $post_image->id ) ) {
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continue;
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}
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$meta = wp_get_attachment_metadata( $post_image_id );
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// Must be larger than 200x200 (or user-specified)
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if ( ! isset( $meta['width'] ) || $meta['width'] < $width ) {
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continue;
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}
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if ( ! isset( $meta['height'] ) || $meta['height'] < $height ) {
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continue;
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}
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$url = wp_get_attachment_url( $post_image_id );
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$images[] = array(
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'type' => 'image',
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'from' => 'slideshow',
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'src' => $url,
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'src_width' => $meta['width'],
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'src_height' => $meta['height'],
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'href' => $permalink,
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);
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}
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}
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}
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ob_end_clean();
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// Operator: Main screen turn on
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$GLOBALS['shortcode_tags'] = $old_shortcodes;
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$GLOBALS['post'] = $old_post;
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return $images;
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}
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/**
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* If a gallery is detected, then get all the images from it.
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*/
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static function from_gallery( $post_id ) {
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$images = array();
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$post = get_post( $post_id );
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if ( ! $post ) {
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return $images;
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}
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if ( ! empty( $post->post_password ) ) {
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return $images;
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}
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$permalink = get_permalink( $post->ID );
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/**
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* Juggle global post object because the gallery shortcode uses the
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* global object.
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*
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* See core ticket:
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* https://core.trac.wordpress.org/ticket/39304
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*/
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if ( isset( $GLOBALS['post'] ) ) {
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$juggle_post = $GLOBALS['post'];
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$GLOBALS['post'] = $post;
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$galleries = get_post_galleries( $post->ID, false );
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$GLOBALS['post'] = $juggle_post;
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} else {
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$GLOBALS['post'] = $post;
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$galleries = get_post_galleries( $post->ID, false );
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unset( $GLOBALS['post'] );
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}
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foreach ( $galleries as $gallery ) {
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if ( isset( $gallery['type'] ) && 'slideshow' === $gallery['type'] && ! empty( $gallery['ids'] ) ) {
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$image_ids = explode( ',', $gallery['ids'] );
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$image_size = isset( $gallery['size'] ) ? $gallery['size'] : 'thumbnail';
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foreach ( $image_ids as $image_id ) {
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$image = wp_get_attachment_image_src( $image_id, $image_size );
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if ( ! empty( $image[0] ) ) {
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list( $raw_src ) = explode( '?', $image[0] ); // pull off any Query string (?w=250)
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$raw_src = wp_specialchars_decode( $raw_src ); // rawify it
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$raw_src = esc_url_raw( $raw_src ); // clean it
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$images[] = array(
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'type' => 'image',
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'from' => 'gallery',
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'src' => $raw_src,
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'href' => $permalink,
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);
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}
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}
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} elseif ( ! empty( $gallery['src'] ) ) {
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foreach ( $gallery['src'] as $src ) {
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list( $raw_src ) = explode( '?', $src ); // pull off any Query string (?w=250)
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$raw_src = wp_specialchars_decode( $raw_src ); // rawify it
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$raw_src = esc_url_raw( $raw_src ); // clean it
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$images[] = array(
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'type' => 'image',
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'from' => 'gallery',
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'src' => $raw_src,
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'href' => $permalink,
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);
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}
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}
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}
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return $images;
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}
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/**
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* Get attachment images for a specified post and return them. Also make sure
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* their dimensions are at or above a required minimum.
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*/
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static function from_attachment( $post_id, $width = 200, $height = 200 ) {
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$images = array();
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$post = get_post( $post_id );
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if ( ! empty( $post->post_password ) ) {
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return $images;
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}
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$post_images = get_posts(
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array(
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'post_parent' => $post_id, // Must be children of post
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'numberposts' => 5, // No more than 5
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'post_type' => 'attachment', // Must be attachments
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'post_mime_type' => 'image', // Must be images
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'suppress_filters' => false,
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)
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);
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if ( ! $post_images ) {
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return $images;
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}
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$permalink = get_permalink( $post_id );
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foreach ( $post_images as $post_image ) {
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$current_image = self::get_attachment_data( $post_image->ID, $permalink, $width, $height );
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if ( false !== $current_image ) {
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$images[] = $current_image;
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}
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}
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/*
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* We only want to pass back attached images that were actually inserted.
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* We can load up all the images found in the HTML source and then
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* compare URLs to see if an image is attached AND inserted.
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*/
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$html_images = self::from_html( $post_id );
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$inserted_images = array();
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foreach ( $html_images as $html_image ) {
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$src = wp_parse_url( $html_image['src'] );
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// strip off any query strings from src
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if ( ! empty( $src['scheme'] ) && ! empty( $src['host'] ) ) {
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$inserted_images[] = $src['scheme'] . '://' . $src['host'] . $src['path'];
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} elseif ( ! empty( $src['host'] ) ) {
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$inserted_images[] = set_url_scheme( 'http://' . $src['host'] . $src['path'] );
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} else {
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$inserted_images[] = site_url( '/' ) . $src['path'];
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}
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}
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foreach ( $images as $i => $image ) {
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if ( ! in_array( $image['src'], $inserted_images ) ) {
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unset( $images[ $i ] );
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}
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}
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return $images;
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}
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/**
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* Check if a Featured Image is set for this post, and return it in a similar
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* format to the other images?_from_*() methods.
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*
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* @param int $post_id The post ID to check
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* @return array containing details of the Featured Image, or empty array if none.
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*/
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static function from_thumbnail( $post_id, $width = 200, $height = 200 ) {
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$images = array();
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$post = get_post( $post_id );
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if ( ! empty( $post->post_password ) ) {
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return $images;
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}
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if ( 'attachment' === get_post_type( $post ) && wp_attachment_is_image( $post ) ) {
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$thumb = $post_id;
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} else {
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$thumb = get_post_thumbnail_id( $post );
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}
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if ( $thumb ) {
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$meta = wp_get_attachment_metadata( $thumb );
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// Must be larger than requested minimums
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if ( ! isset( $meta['width'] ) || $meta['width'] < $width ) {
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return $images;
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}
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if ( ! isset( $meta['height'] ) || $meta['height'] < $height ) {
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return $images;
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}
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$too_big = ( ( ! empty( $meta['width'] ) && $meta['width'] > 1200 ) || ( ! empty( $meta['height'] ) && $meta['height'] > 1200 ) );
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if (
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$too_big &&
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(
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( method_exists( 'Jetpack', 'is_module_active' ) && Jetpack::is_module_active( 'photon' ) ) ||
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( defined( 'IS_WPCOM' ) && IS_WPCOM )
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)
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) {
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$img_src = wp_get_attachment_image_src( $thumb, array( 1200, 1200 ) );
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} else {
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$img_src = wp_get_attachment_image_src( $thumb, 'full' );
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}
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if ( ! is_array( $img_src ) ) {
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// If wp_get_attachment_image_src returns false but we know that there should be an image that could be used.
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// we try a bit harder and user the data that we have.
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$thumb_post_data = get_post( $thumb );
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$img_src = array( $thumb_post_data->guid, $meta['width'], $meta['height'] );
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}
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$url = $img_src[0];
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$images = array(
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array( // Other methods below all return an array of arrays
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'type' => 'image',
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'from' => 'thumbnail',
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'src' => $url,
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'src_width' => $img_src[1],
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'src_height' => $img_src[2],
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'href' => get_permalink( $thumb ),
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'alt_text' => self::get_alt_text( $thumb ),
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),
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);
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}
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if ( empty( $images ) && ( defined( 'IS_WPCOM' ) && IS_WPCOM ) ) {
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$meta_thumbnail = get_post_meta( $post_id, '_jetpack_post_thumbnail', true );
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if ( ! empty( $meta_thumbnail ) ) {
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if ( ! isset( $meta_thumbnail['width'] ) || $meta_thumbnail['width'] < $width ) {
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return $images;
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}
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if ( ! isset( $meta_thumbnail['height'] ) || $meta_thumbnail['height'] < $height ) {
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return $images;
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}
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$images = array(
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array( // Other methods below all return an array of arrays
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'type' => 'image',
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'from' => 'thumbnail',
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'src' => $meta_thumbnail['URL'],
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'src_width' => $meta_thumbnail['width'],
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'src_height' => $meta_thumbnail['height'],
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'href' => $meta_thumbnail['URL'],
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'alt_text' => self::get_alt_text( $thumb ),
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),
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);
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}
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}
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return $images;
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}
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/**
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* Get images from Gutenberg Image blocks.
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*
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* @since 6.9.0
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*
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* @param mixed $html_or_id The HTML string to parse for images, or a post id.
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* @param int $width Minimum Image width.
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* @param int $height Minimum Image height.
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*/
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public static function from_blocks( $html_or_id, $width = 200, $height = 200 ) {
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$images = array();
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$html_info = self::get_post_html( $html_or_id );
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if ( empty( $html_info['html'] ) ) {
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return $images;
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}
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// Look for block information in the HTML.
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$blocks = parse_blocks( $html_info['html'] );
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if ( empty( $blocks ) ) {
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return $images;
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}
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/*
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* Let's loop through our blocks.
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* Some blocks may include some other blocks. Let's go 2 levels deep to look for blocks
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* that we support and that may include images (see get_images_from_block)
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*
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* @to-do: instead of looping manually (that's a lot of if and loops), search recursively instead.
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*/
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foreach ( $blocks as $block ) {
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if ( ! self::is_nested_block( $block ) || 'core/media-text' === $block['blockName'] ) {
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$images = self::get_images_from_block( $images, $block, $html_info, $width, $height );
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} else {
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foreach ( $block['innerBlocks'] as $inner_block ) {
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if ( ! self::is_nested_block( $inner_block ) ) {
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$images = self::get_images_from_block( $images, $inner_block, $html_info, $width, $height );
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} else {
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foreach ( $inner_block['innerBlocks'] as $inner_inner_block ) {
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$images = self::get_images_from_block( $images, $inner_inner_block, $html_info, $width, $height );
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}
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}
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}
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}
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}
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/**
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* Returning a filtered array because get_attachment_data returns false
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* for unsuccessful attempts.
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*/
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return array_filter( $images );
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}
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/**
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* Very raw -- just parse the HTML and pull out any/all img tags and return their src
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*
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* @param mixed $html_or_id The HTML string to parse for images, or a post id.
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* @param int $width Minimum Image width.
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* @param int $height Minimum Image height.
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*
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* @uses DOMDocument
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*
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* @return array containing images
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*/
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static function from_html( $html_or_id, $width = 200, $height = 200 ) {
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$images = array();
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$html_info = self::get_post_html( $html_or_id );
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if ( empty( $html_info['html'] ) ) {
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return $images;
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}
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// Do not go any further if DOMDocument is disabled on the server.
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if ( ! class_exists( 'DOMDocument' ) ) {
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return $images;
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}
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// Let's grab all image tags from the HTML.
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$dom_doc = new DOMDocument();
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// The @ is not enough to suppress errors when dealing with libxml,
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// we have to tell it directly how we want to handle errors.
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libxml_use_internal_errors( true );
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@$dom_doc->loadHTML( $html_info['html'] );
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libxml_use_internal_errors( false );
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$image_tags = $dom_doc->getElementsByTagName( 'img' );
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// For each image Tag, make sure it can be added to the $images array, and add it.
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foreach ( $image_tags as $image_tag ) {
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$img_src = $image_tag->getAttribute( 'src' );
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if ( empty( $img_src ) ) {
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continue;
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}
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// Do not grab smiley images that were automatically created by WP when entering text smilies.
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if ( stripos( $img_src, '/smilies/' ) ) {
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continue;
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}
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$meta = array(
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'width' => (int) $image_tag->getAttribute( 'width' ),
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'height' => (int) $image_tag->getAttribute( 'height' ),
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'alt_text' => $image_tag->getAttribute( 'alt' ),
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);
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/**
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* Filters the switch to ignore minimum image size requirements. Can be used
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* to add custom logic to image dimensions, like only enforcing one of the dimensions,
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* or disabling it entirely.
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*
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* @since 6.4.0
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*
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* @param bool $ignore Should the image dimensions be ignored?
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* @param array $meta Array containing image dimensions parsed from the markup.
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*/
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$ignore_dimensions = apply_filters( 'jetpack_postimages_ignore_minimum_dimensions', false, $meta );
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// Must be larger than 200x200 (or user-specified).
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if (
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! $ignore_dimensions
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&& (
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empty( $meta['width'] )
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|| empty( $meta['height'] )
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|| $meta['width'] < $width
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|| $meta['height'] < $height
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)
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) {
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continue;
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}
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$images[] = array(
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'type' => 'image',
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'from' => 'html',
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'src' => $img_src,
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'src_width' => $meta['width'],
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'src_height' => $meta['height'],
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'href' => $html_info['post_url'],
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'alt_text' => $meta['alt_text'],
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);
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}
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return $images;
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}
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/**
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* @param int $post_id The post ID to check
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* @param int $size
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* @return array containing details of the image, or empty array if none.
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*/
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static function from_blavatar( $post_id, $size = 96 ) {
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$permalink = get_permalink( $post_id );
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if ( function_exists( 'blavatar_domain' ) && function_exists( 'blavatar_exists' ) && function_exists( 'blavatar_url' ) ) {
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$domain = blavatar_domain( $permalink );
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if ( ! blavatar_exists( $domain ) ) {
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return array();
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}
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$url = blavatar_url( $domain, 'img', $size );
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} else {
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$url = get_site_icon_url( $size );
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if ( ! $url ) {
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return array();
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}
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}
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return array(
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array(
|
|
'type' => 'image',
|
|
'from' => 'blavatar',
|
|
'src' => $url,
|
|
'src_width' => $size,
|
|
'src_height' => $size,
|
|
'href' => $permalink,
|
|
'alt_text' => '',
|
|
),
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Gets a post image from the author avatar.
|
|
*
|
|
* @param int $post_id The post ID to check.
|
|
* @param int $size The size of the avatar to get.
|
|
* @param string $default The default image to use.
|
|
* @return array containing details of the image, or empty array if none.
|
|
*/
|
|
static function from_gravatar( $post_id, $size = 96, $default = false ) {
|
|
$post = get_post( $post_id );
|
|
$permalink = get_permalink( $post_id );
|
|
|
|
if ( function_exists( 'wpcom_get_avatar_url' ) ) {
|
|
$url = wpcom_get_avatar_url( $post->post_author, $size, $default, true );
|
|
if ( $url && is_array( $url ) ) {
|
|
$url = $url[0];
|
|
}
|
|
} else {
|
|
$url = get_avatar_url(
|
|
$post->post_author,
|
|
array(
|
|
'size' => $size,
|
|
'default' => $default,
|
|
)
|
|
);
|
|
}
|
|
|
|
return array(
|
|
array(
|
|
'type' => 'image',
|
|
'from' => 'gravatar',
|
|
'src' => $url,
|
|
'src_width' => $size,
|
|
'src_height' => $size,
|
|
'href' => $permalink,
|
|
'alt_text' => '',
|
|
),
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Run through the different methods that we have available to try to find a single good
|
|
* display image for this post.
|
|
*
|
|
* @param int $post_id
|
|
* @param array $args Other arguments (currently width and height required for images where possible to determine)
|
|
* @return array containing details of the best image to be used
|
|
*/
|
|
static function get_image( $post_id, $args = array() ) {
|
|
$image = '';
|
|
|
|
/**
|
|
* Fires before we find a single good image for a specific post.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @param int $post_id Post ID.
|
|
*/
|
|
do_action( 'jetpack_postimages_pre_get_image', $post_id );
|
|
$media = self::get_images( $post_id, $args );
|
|
|
|
if ( is_array( $media ) ) {
|
|
foreach ( $media as $item ) {
|
|
if ( 'image' == $item['type'] ) {
|
|
$image = $item;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fires after we find a single good image for a specific post.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @param int $post_id Post ID.
|
|
*/
|
|
do_action( 'jetpack_postimages_post_get_image', $post_id );
|
|
|
|
return $image;
|
|
}
|
|
|
|
/**
|
|
* Get an array containing a collection of possible images for this post, stopping once we hit a method
|
|
* that returns something useful.
|
|
*
|
|
* @param int $post_id
|
|
* @param array $args Optional args, see defaults list for details
|
|
* @return array containing images that would be good for representing this post
|
|
*/
|
|
static function get_images( $post_id, $args = array() ) {
|
|
// Figure out which image to attach to this post.
|
|
$media = false;
|
|
|
|
/**
|
|
* Filters the array of images that would be good for a specific post.
|
|
* This filter is applied before options ($args) filter the original array.
|
|
*
|
|
* @since 2.0.0
|
|
*
|
|
* @param array $media Array of images that would be good for a specific post.
|
|
* @param int $post_id Post ID.
|
|
* @param array $args Array of options to get images.
|
|
*/
|
|
$media = apply_filters( 'jetpack_images_pre_get_images', $media, $post_id, $args );
|
|
if ( $media ) {
|
|
return $media;
|
|
}
|
|
|
|
$defaults = array(
|
|
'width' => 200, // Required minimum width (if possible to determine)
|
|
'height' => 200, // Required minimum height (if possible to determine)
|
|
|
|
'fallback_to_avatars' => false, // Optionally include Blavatar and Gravatar (in that order) in the image stack
|
|
'avatar_size' => 96, // Used for both Grav and Blav
|
|
'gravatar_default' => false, // Default image to use if we end up with no Gravatar
|
|
|
|
'from_thumbnail' => true, // Use these flags to specify which methods to use to find an image
|
|
'from_slideshow' => true,
|
|
'from_gallery' => true,
|
|
'from_attachment' => true,
|
|
'from_blocks' => true,
|
|
'from_html' => true,
|
|
|
|
'html_content' => '', // HTML string to pass to from_html()
|
|
);
|
|
$args = wp_parse_args( $args, $defaults );
|
|
|
|
$media = false;
|
|
if ( $args['from_thumbnail'] ) {
|
|
$media = self::from_thumbnail( $post_id, $args['width'], $args['height'] );
|
|
}
|
|
if ( ! $media && $args['from_slideshow'] ) {
|
|
$media = self::from_slideshow( $post_id, $args['width'], $args['height'] );
|
|
}
|
|
if ( ! $media && $args['from_gallery'] ) {
|
|
$media = self::from_gallery( $post_id );
|
|
}
|
|
if ( ! $media && $args['from_attachment'] ) {
|
|
$media = self::from_attachment( $post_id, $args['width'], $args['height'] );
|
|
}
|
|
if ( ! $media && $args['from_blocks'] ) {
|
|
if ( empty( $args['html_content'] ) ) {
|
|
$media = self::from_blocks( $post_id, $args['width'], $args['height'] ); // Use the post_id, which will load the content
|
|
} else {
|
|
$media = self::from_blocks( $args['html_content'], $args['width'], $args['height'] ); // If html_content is provided, use that
|
|
}
|
|
}
|
|
if ( ! $media && $args['from_html'] ) {
|
|
if ( empty( $args['html_content'] ) ) {
|
|
$media = self::from_html( $post_id, $args['width'], $args['height'] ); // Use the post_id, which will load the content
|
|
} else {
|
|
$media = self::from_html( $args['html_content'], $args['width'], $args['height'] ); // If html_content is provided, use that
|
|
}
|
|
}
|
|
|
|
if ( ! $media && $args['fallback_to_avatars'] ) {
|
|
$media = self::from_blavatar( $post_id, $args['avatar_size'] );
|
|
if ( ! $media ) {
|
|
$media = self::from_gravatar( $post_id, $args['avatar_size'], $args['gravatar_default'] );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Filters the array of images that would be good for a specific post.
|
|
* This filter is applied after options ($args) filter the original array.
|
|
*
|
|
* @since 2.0.0
|
|
*
|
|
* @param array $media Array of images that would be good for a specific post.
|
|
* @param int $post_id Post ID.
|
|
* @param array $args Array of options to get images.
|
|
*/
|
|
return apply_filters( 'jetpack_images_get_images', $media, $post_id, $args );
|
|
}
|
|
|
|
/**
|
|
* Takes an image URL and pixel dimensions then returns a URL for the
|
|
* resized and cropped image.
|
|
*
|
|
* @param string $src
|
|
* @param int $dimension
|
|
* @return string Transformed image URL
|
|
*/
|
|
static function fit_image_url( $src, $width, $height ) {
|
|
$width = (int) $width;
|
|
$height = (int) $height;
|
|
|
|
if ( $width < 1 || $height < 1 ) {
|
|
return $src;
|
|
}
|
|
|
|
// See if we should bypass WordPress.com SaaS resizing
|
|
if ( has_filter( 'jetpack_images_fit_image_url_override' ) ) {
|
|
/**
|
|
* Filters the image URL used after dimensions are set by Photon.
|
|
*
|
|
* @since 3.3.0
|
|
*
|
|
* @param string $src Image URL.
|
|
* @param int $width Image width.
|
|
* @param int $width Image height.
|
|
*/
|
|
return apply_filters( 'jetpack_images_fit_image_url_override', $src, $width, $height );
|
|
}
|
|
|
|
// If WPCOM hosted image use native transformations
|
|
$img_host = wp_parse_url( $src, PHP_URL_HOST );
|
|
if ( '.files.wordpress.com' == substr( $img_host, -20 ) ) {
|
|
return add_query_arg(
|
|
array(
|
|
'w' => $width,
|
|
'h' => $height,
|
|
'crop' => 1,
|
|
),
|
|
set_url_scheme( $src )
|
|
);
|
|
}
|
|
|
|
// Use Photon magic
|
|
if ( function_exists( 'jetpack_photon_url' ) ) {
|
|
return jetpack_photon_url( $src, array( 'resize' => "$width,$height" ) );
|
|
}
|
|
|
|
// Arg... no way to resize image using WordPress.com infrastructure!
|
|
return $src;
|
|
}
|
|
|
|
/**
|
|
* Get HTML from given post content.
|
|
*
|
|
* @since 6.9.0
|
|
*
|
|
* @param mixed $html_or_id The HTML string to parse for images, or a post id.
|
|
*
|
|
* @return array $html_info {
|
|
* @type string $html Post content.
|
|
* @type string $post_url Post URL.
|
|
* }
|
|
*/
|
|
static function get_post_html( $html_or_id ) {
|
|
if ( is_numeric( $html_or_id ) ) {
|
|
$post = get_post( $html_or_id );
|
|
|
|
if ( empty( $post ) || ! empty( $post->post_password ) ) {
|
|
return '';
|
|
}
|
|
|
|
$html_info = array(
|
|
'html' => $post->post_content, // DO NOT apply the_content filters here, it will cause loops.
|
|
'post_url' => get_permalink( $post->ID ),
|
|
);
|
|
} else {
|
|
$html_info = array(
|
|
'html' => $html_or_id,
|
|
'post_url' => '',
|
|
);
|
|
}
|
|
return $html_info;
|
|
}
|
|
|
|
/**
|
|
* Get info about a WordPress attachment.
|
|
*
|
|
* @since 6.9.0
|
|
*
|
|
* @param int $attachment_id Attachment ID.
|
|
* @param string $post_url URL of the post, if we have one.
|
|
* @param int $width Minimum Image width.
|
|
* @param int $height Minimum Image height.
|
|
* @return array|bool Image data or false if unavailable.
|
|
*/
|
|
public static function get_attachment_data( $attachment_id, $post_url = '', $width, $height ) {
|
|
if ( empty( $attachment_id ) ) {
|
|
return false;
|
|
}
|
|
|
|
$meta = wp_get_attachment_metadata( $attachment_id );
|
|
|
|
// The image must be larger than 200x200.
|
|
if ( ! isset( $meta['width'] ) || $meta['width'] < $width ) {
|
|
return false;
|
|
}
|
|
if ( ! isset( $meta['height'] ) || $meta['height'] < $height ) {
|
|
return false;
|
|
}
|
|
|
|
$url = wp_get_attachment_url( $attachment_id );
|
|
|
|
return array(
|
|
'type' => 'image',
|
|
'from' => 'attachment',
|
|
'src' => $url,
|
|
'src_width' => $meta['width'],
|
|
'src_height' => $meta['height'],
|
|
'href' => $post_url,
|
|
'alt_text' => self::get_alt_text( $attachment_id ),
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Get the alt text for an image or other media from the Media Library.
|
|
*
|
|
* @since 7.1
|
|
*
|
|
* @param int $attachment_id The Post ID of the media.
|
|
* @return string The alt text value or an emptry string.
|
|
*/
|
|
public static function get_alt_text( $attachment_id ) {
|
|
return get_post_meta( $attachment_id, '_wp_attachment_image_alt', true );
|
|
}
|
|
|
|
/**
|
|
* Get an image from a block.
|
|
*
|
|
* @since 7.8.0
|
|
*
|
|
* @param array $images Images found.
|
|
* @param array $block Block and its attributes.
|
|
* @param array $html_info Info about the post where the block is found.
|
|
* @param int $width Desired image width.
|
|
* @param int $height Desired image height.
|
|
*
|
|
* @return array Array of images found.
|
|
*/
|
|
private static function get_images_from_block( $images, $block, $html_info, $width, $height ) {
|
|
/**
|
|
* Parse content from Core Image blocks.
|
|
* If it is an image block for an image hosted on our site, it will have an ID.
|
|
* If it does not have an ID, let `from_html` parse that content later,
|
|
* and extract an image if it has size parameters.
|
|
*/
|
|
if (
|
|
'core/image' === $block['blockName']
|
|
&& ! empty( $block['attrs']['id'] )
|
|
) {
|
|
$images[] = self::get_attachment_data( $block['attrs']['id'], $html_info['post_url'], $width, $height );
|
|
} elseif (
|
|
'core/media-text' === $block['blockName']
|
|
&& ! empty( $block['attrs']['mediaId'] )
|
|
) {
|
|
$images[] = self::get_attachment_data( $block['attrs']['mediaId'], $html_info['post_url'], $width, $height );
|
|
} elseif (
|
|
/**
|
|
* Parse content from Core Gallery blocks as well from Jetpack's Tiled Gallery and Slideshow blocks.
|
|
* Gallery blocks include the ID of each one of the images in the gallery.
|
|
*/
|
|
in_array( $block['blockName'], array( 'core/gallery', 'jetpack/tiled-gallery', 'jetpack/slideshow' ), true )
|
|
&& ! empty( $block['attrs']['ids'] )
|
|
) {
|
|
foreach ( $block['attrs']['ids'] as $img_id ) {
|
|
$images[] = self::get_attachment_data( $img_id, $html_info['post_url'], $width, $height );
|
|
}
|
|
}
|
|
|
|
return $images;
|
|
}
|
|
|
|
/**
|
|
* Check if a block has inner blocks.
|
|
*
|
|
* @since 7.8.0
|
|
*
|
|
* @param array $block Block and its attributes.
|
|
*
|
|
* @return bool
|
|
*/
|
|
private static function is_nested_block( $block ) {
|
|
if ( ! empty( $block['innerBlocks'] ) ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|