162 lines
5.5 KiB
PHP
162 lines
5.5 KiB
PHP
<?php
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/**
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* Get one image from a specified post in the following order:
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* Featured Image then first image from the_content HTML
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* and filter the post_thumbnail_html
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*
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* @param string $html The HTML for the image markup.
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* @param int $post_id The post ID to check.
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* @param int $post_thumbnail_id The ID of the featured image.
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* @param string $size The image size to return, defaults to 'post-thumbnail'.
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* @param string|array $attr Optional. Query string or array of attributes.
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*
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* @return string $html Thumbnail image with markup.
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*/
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function jetpack_featured_images_fallback_get_image( $html, $post_id, $post_thumbnail_id, $size, $attr ) {
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$opts = jetpack_featured_images_get_settings();
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if ( ! empty( $html ) || (bool) 1 !== (bool) $opts['fallback-option'] ) {
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return trim( $html );
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}
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if ( jetpack_featured_images_should_load() ) {
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if (
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( true === $opts['archive'] && ( is_home() || is_archive() || is_search() ) && ! $opts['archive-option'] )
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|| ( true === $opts['post'] && is_single() && ! $opts['post-option'] )
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|| ! $opts['fallback-option']
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) {
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return trim( $html );
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}
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}
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if ( class_exists( 'Jetpack_PostImages' ) ) {
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global $_wp_additional_image_sizes;
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$args = array(
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'from_thumbnail' => false,
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'from_slideshow' => true,
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'from_gallery' => true,
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'from_attachment' => false,
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);
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$image = Jetpack_PostImages::get_image( $post_id, $args );
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if ( ! empty( $image ) ) {
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$image['width'] = '';
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$image['height'] = '';
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$image['crop'] = '';
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if ( array_key_exists( $size, $_wp_additional_image_sizes ) ) {
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$image['width'] = $_wp_additional_image_sizes[ $size ]['width'];
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$image['height'] = $_wp_additional_image_sizes[ $size ]['height'];
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$image['crop'] = $_wp_additional_image_sizes[ $size ]['crop'];
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}
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$image_src = Jetpack_PostImages::fit_image_url( $image['src'], $image['width'], $image['height'] );
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// Use the theme's crop setting rather than forcing to true
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$image_src = add_query_arg( 'crop', $image['crop'], $image_src );
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$html = '<img src="' . esc_url( $image_src ) . '" title="' . esc_attr( strip_tags( get_the_title() ) ) . '" class="attachment-' . esc_attr( $size ) . ' wp-post-image" />';
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return trim( $html );
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}
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}
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return trim( $html );
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}
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add_filter( 'post_thumbnail_html', 'jetpack_featured_images_fallback_get_image', 10, 5 );
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/**
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* Get URL of one image from a specified post in the following order:
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* Featured Image then first image from the_content HTML
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*
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* @param int $post_id The post ID to check.
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* @param int $post_thumbnail_id The ID of the featured image.
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* @param string $size The image size to return, defaults to 'post-thumbnail'.
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*
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* @return string|null $image_src The URL of the thumbnail image.
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*/
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function jetpack_featured_images_fallback_get_image_src( $post_id, $post_thumbnail_id, $size ) {
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$image_src = wp_get_attachment_image_src( $post_thumbnail_id, $size );
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$image_src = ( ! empty( $image_src[0] ) ) ? $image_src[0] : null;
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$opts = jetpack_featured_images_get_settings();
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if ( ! empty( $image_src ) || (bool) 1 !== (bool) $opts['fallback-option'] ) {
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return esc_url( $image_src );
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}
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if ( jetpack_featured_images_should_load() ) {
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if ( ( true === $opts['archive'] && ( is_home() || is_archive() || is_search() ) && ! $opts['archive-option'] )
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|| ( true === $opts['post'] && is_single() && ! $opts['post-option'] ) ) {
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return esc_url( $image_src );
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}
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}
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if ( class_exists( 'Jetpack_PostImages' ) ) {
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global $_wp_additional_image_sizes;
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$args = array(
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'from_thumbnail' => false,
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'from_slideshow' => true,
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'from_gallery' => true,
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'from_attachment' => false,
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);
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$image = Jetpack_PostImages::get_image( $post_id, $args );
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if ( ! empty( $image ) ) {
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$image['width'] = '';
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$image['height'] = '';
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$image['crop'] = '';
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if ( array_key_exists( $size, $_wp_additional_image_sizes ) ) {
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$image['width'] = $_wp_additional_image_sizes[ $size ]['width'];
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$image['height'] = $_wp_additional_image_sizes[ $size ]['height'];
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$image['crop'] = $_wp_additional_image_sizes[ $size ]['crop'];
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}
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$image_src = Jetpack_PostImages::fit_image_url( $image['src'], $image['width'], $image['height'] );
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// Use the theme's crop setting rather than forcing to true
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$image_src = add_query_arg( 'crop', $image['crop'], $image_src );
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return esc_url( $image_src );
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}
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}
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return esc_url( $image_src );
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}
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/**
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* Check if post has an image attached, including a fallback.
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*
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* @param int $post The post ID to check.
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*
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* @return bool
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*/
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function jetpack_has_featured_image( $post = null ) {
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return (bool) get_the_post_thumbnail( $post );
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}
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/**
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* Adds custom class to the array of post classes.
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*
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* @param array $classes Classes for the post element.
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* @param array $class Optional. Comma separated list of additional classes.
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* @param array $post_id Unique The post ID to check
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*
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* @return array $classes
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*/
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function jetpack_featured_images_post_class( $classes, $class, $post_id ) {
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$post_password_required = post_password_required( $post_id );
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$opts = jetpack_featured_images_get_settings();
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if ( jetpack_has_featured_image( $post_id ) && (bool) 1 === (bool) $opts['fallback-option'] && ! is_attachment() && ! $post_password_required && 'post' === get_post_type() ) {
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$classes[] = 'has-post-thumbnail';
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}
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return $classes;
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}
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add_filter( 'post_class', 'jetpack_featured_images_post_class', 10, 3 );
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