diff options
Diffstat (limited to 'plugins/jetpack/class.jetpack-post-images.php')
| -rw-r--r-- | plugins/jetpack/class.jetpack-post-images.php | 230 |
1 files changed, 182 insertions, 48 deletions
diff --git a/plugins/jetpack/class.jetpack-post-images.php b/plugins/jetpack/class.jetpack-post-images.php index cccc4b8a..f0119c14 100644 --- a/plugins/jetpack/class.jetpack-post-images.php +++ b/plugins/jetpack/class.jetpack-post-images.php @@ -56,17 +56,17 @@ class Jetpack_PostImages { foreach ( $post_images as $post_image ) { if ( !$post_image_id = absint( $post_image->id ) ) continue; - + $meta = wp_get_attachment_metadata( $post_image_id ); - + // Must be larger than 200x200 (or user-specified) if ( !isset( $meta['width'] ) || $meta['width'] < $width ) continue; if ( !isset( $meta['height'] ) || $meta['height'] < $height ) continue; - + $url = wp_get_attachment_url( $post_image_id ); - + $images[] = array( 'type' => 'image', 'from' => 'slideshow', @@ -187,23 +187,10 @@ class Jetpack_PostImages { $permalink = get_permalink( $post_id ); foreach ( $post_images as $post_image ) { - $meta = wp_get_attachment_metadata( $post_image->ID ); - // Must be larger than 200x200 - if ( !isset( $meta['width'] ) || $meta['width'] < $width ) - continue; - if ( !isset( $meta['height'] ) || $meta['height'] < $height ) - continue; - - $url = wp_get_attachment_url( $post_image->ID ); - - $images[] = array( - 'type' => 'image', - 'from' => 'attachment', - 'src' => $url, - 'src_width' => $meta['width'], - 'src_height' => $meta['height'], - 'href' => $permalink, - ); + $current_image = self::get_attachment_data( $post_image->ID, $permalink, $width, $height ); + if ( false !== $current_image ) { + $images[] = $current_image; + } } /* @@ -248,12 +235,12 @@ class Jetpack_PostImages { return $images; } - if ( ! function_exists( 'get_post_thumbnail_id' ) ) { - return $images; + if ( 'attachment' === get_post_type( $post ) && wp_attachment_is_image( $post ) ) { + $thumb = $post_id; + } else { + $thumb = get_post_thumbnail_id( $post ); } - $thumb = get_post_thumbnail_id( $post_id ); - if ( $thumb ) { $meta = wp_get_attachment_metadata( $thumb ); // Must be larger than requested minimums @@ -282,7 +269,7 @@ class Jetpack_PostImages { $img_src = array( $thumb_post_data->guid, $meta['width'], $meta['height'] ); } - $url = $img_src[0]; + $url = $img_src[0]; $images = array( array( // Other methods below all return an array of arrays 'type' => 'image', 'from' => 'thumbnail', @@ -290,6 +277,7 @@ class Jetpack_PostImages { 'src_width' => $img_src[1], 'src_height' => $img_src[2], 'href' => get_permalink( $thumb ), + 'alt_text' => self::get_alt_text( $thumb ), ) ); } @@ -312,6 +300,7 @@ class Jetpack_PostImages { 'src_width' => $meta_thumbnail['width'], 'src_height' => $meta_thumbnail['height'], 'href' => $meta_thumbnail['URL'], + 'alt_text' => self::get_alt_text( $thumb ), ) ); } } @@ -320,6 +309,65 @@ class Jetpack_PostImages { } /** + * Get images from Gutenberg Image blocks. + * + * @since 6.9.0 + * + * @param mixed $html_or_id The HTML string to parse for images, or a post id. + * @param int $width Minimum Image width. + * @param int $height Minimum Image height. + */ + public static function from_blocks( $html_or_id, $width = 200, $height = 200 ) { + $images = array(); + + $html_info = self::get_post_html( $html_or_id ); + + if ( empty( $html_info['html'] ) ) { + return $images; + } + + // Look for block information in the HTML. + $blocks = parse_blocks( $html_info['html'] ); + if ( empty( $blocks ) ) { + return $images; + } + + foreach ( $blocks as $block ) { + /** + * 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 ); + } + + /** + * Parse content from Core Gallery blocks and Jetpack's Tiled Gallery blocks. + * Gallery blocks include the ID of each one of the images in the gallery. + */ + if ( + ( 'core/gallery' === $block['blockName'] || 'jetpack/tiled-gallery' === $block['blockName'] ) + && ! empty( $block['attrs']['ids'] ) + ) { + foreach ( $block['attrs']['ids'] as $img_id ) { + $images[] = self::get_attachment_data( $img_id, $html_info['post_url'], $width, $height ); + } + } + } + + /** + * Returning a filtered array because get_attachment_data returns false + * for unsuccessful attempts. + */ + return array_filter( $images ); + } + + /** * Very raw -- just parse the HTML and pull out any/all img tags and return their src * * @param mixed $html_or_id The HTML string to parse for images, or a post id. @@ -333,19 +381,9 @@ class Jetpack_PostImages { static function from_html( $html_or_id, $width = 200, $height = 200 ) { $images = array(); - if ( is_numeric( $html_or_id ) ) { - $post = get_post( $html_or_id ); + $html_info = self::get_post_html( $html_or_id ); - if ( empty( $post ) || ! empty( $post->post_password ) ) { - return $images; - } - - $html = $post->post_content; // DO NOT apply the_content filters here, it will cause loops. - } else { - $html = $html_or_id; - } - - if ( ! $html ) { + if ( empty( $html_info['html'] ) ) { return $images; } @@ -360,7 +398,7 @@ class Jetpack_PostImages { // The @ is not enough to suppress errors when dealing with libxml, // we have to tell it directly how we want to handle errors. libxml_use_internal_errors( true ); - @$dom_doc->loadHTML( $html ); + @$dom_doc->loadHTML( $html_info['html'] ); libxml_use_internal_errors( false ); $image_tags = $dom_doc->getElementsByTagName( 'img' ); @@ -379,8 +417,9 @@ class Jetpack_PostImages { } $meta = array( - 'width' => (int) $image_tag->getAttribute( 'width' ), - 'height' => (int) $image_tag->getAttribute( 'height' ), + 'width' => (int) $image_tag->getAttribute( 'width' ), + 'height' => (int) $image_tag->getAttribute( 'height' ), + 'alt_text' => $image_tag->getAttribute( 'alt' ), ); /** @@ -409,12 +448,13 @@ class Jetpack_PostImages { } $images[] = array( - 'type' => 'image', - 'from' => 'html', - 'src' => $img_src, + 'type' => 'image', + 'from' => 'html', + 'src' => $img_src, 'src_width' => $meta['width'], 'src_height' => $meta['height'], - 'href' => '', // No link to apply to these. Might potentially parse for that as well, but not for now. + 'href' => $html_info['post_url'], + 'alt_text' => $meta['alt_text'], ); } return $images; @@ -437,10 +477,11 @@ class Jetpack_PostImages { } $url = blavatar_url( $domain, 'img', $size ); - } elseif ( function_exists( 'has_site_icon' ) && has_site_icon() ) { - $url = get_site_icon_url( $size ); } else { - return array(); + $url = get_site_icon_url( $size ); + if ( ! $url ) { + return array(); + } } return array( array( @@ -450,6 +491,7 @@ class Jetpack_PostImages { 'src_width' => $size, 'src_height' => $size, 'href' => $permalink, + 'alt_text' => '', ) ); } @@ -485,6 +527,7 @@ class Jetpack_PostImages { 'src_width' => $size, 'src_height' => $size, 'href' => $permalink, + 'alt_text' => '', ), ); } @@ -568,6 +611,7 @@ class Jetpack_PostImages { 'from_slideshow' => true, 'from_gallery' => true, 'from_attachment' => true, + 'from_blocks' => true, 'from_html' => true, 'html_content' => '' // HTML string to pass to from_html() @@ -583,6 +627,12 @@ class Jetpack_PostImages { $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 @@ -653,4 +703,88 @@ class Jetpack_PostImages { // 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 ); + } } |