diff options
Diffstat (limited to 'plugins/jetpack/modules/theme-tools/content-options/featured-images-fallback.php')
| -rw-r--r-- | plugins/jetpack/modules/theme-tools/content-options/featured-images-fallback.php | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/plugins/jetpack/modules/theme-tools/content-options/featured-images-fallback.php b/plugins/jetpack/modules/theme-tools/content-options/featured-images-fallback.php new file mode 100644 index 00000000..dc8d92d6 --- /dev/null +++ b/plugins/jetpack/modules/theme-tools/content-options/featured-images-fallback.php @@ -0,0 +1,161 @@ +<?php +/** + * Get one image from a specified post in the following order: + * Featured Image then first image from the_content HTML + * and filter the post_thumbnail_html + * + * @param string $html The HTML for the image markup. + * @param int $post_id The post ID to check. + * @param int $post_thumbnail_id The ID of the featured image. + * @param string $size The image size to return, defaults to 'post-thumbnail'. + * @param string|array $attr Optional. Query string or array of attributes. + * + * @return string $html Thumbnail image with markup. + */ +function jetpack_featured_images_fallback_get_image( $html, $post_id, $post_thumbnail_id, $size, $attr ) { + $opts = jetpack_featured_images_get_settings(); + + if ( ! empty( $html ) || (bool) 1 !== (bool) $opts['fallback-option'] ) { + return trim( $html ); + } + + if ( jetpack_featured_images_should_load() ) { + if ( + ( true === $opts['archive'] && ( is_home() || is_archive() || is_search() ) && ! $opts['archive-option'] ) + || ( true === $opts['post'] && is_single() && ! $opts['post-option'] ) + || ! $opts['fallback-option'] + ) { + return trim( $html ); + } + } + + if ( class_exists( 'Jetpack_PostImages' ) ) { + global $_wp_additional_image_sizes; + + $args = array( + 'from_thumbnail' => false, + 'from_slideshow' => true, + 'from_gallery' => true, + 'from_attachment' => false, + ); + + $image = Jetpack_PostImages::get_image( $post_id, $args ); + + if ( ! empty( $image ) ) { + $image['width'] = ''; + $image['height'] = ''; + $image['crop'] = ''; + + if ( array_key_exists( $size, $_wp_additional_image_sizes ) ) { + $image['width'] = $_wp_additional_image_sizes[ $size ]['width']; + $image['height'] = $_wp_additional_image_sizes[ $size ]['height']; + $image['crop'] = $_wp_additional_image_sizes[ $size ]['crop']; + } + + $image_src = Jetpack_PostImages::fit_image_url( $image['src'], $image['width'], $image['height'] ); + + // Use the theme's crop setting rather than forcing to true + $image_src = add_query_arg( 'crop', $image['crop'], $image_src ); + + $html = '<img src="' . esc_url( $image_src ) . '" title="' . esc_attr( strip_tags( get_the_title() ) ) . '" class="attachment-' . esc_attr( $size ) . ' wp-post-image" />'; + + return trim( $html ); + } + } + + return trim( $html ); +} +add_filter( 'post_thumbnail_html', 'jetpack_featured_images_fallback_get_image', 10, 5 ); + +/** + * Get URL of one image from a specified post in the following order: + * Featured Image then first image from the_content HTML + * + * @param int $post_id The post ID to check. + * @param int $post_thumbnail_id The ID of the featured image. + * @param string $size The image size to return, defaults to 'post-thumbnail'. + * + * @return string|null $image_src The URL of the thumbnail image. + */ +function jetpack_featured_images_fallback_get_image_src( $post_id, $post_thumbnail_id, $size ) { + $image_src = wp_get_attachment_image_src( $post_thumbnail_id, $size ); + $image_src = ( ! empty( $image_src[0] ) ) ? $image_src[0] : null; + $opts = jetpack_featured_images_get_settings(); + + if ( ! empty( $image_src ) || (bool) 1 !== (bool) $opts['fallback-option'] ) { + return esc_url( $image_src ); + } + + if ( jetpack_featured_images_should_load() ) { + if ( ( true === $opts['archive'] && ( is_home() || is_archive() || is_search() ) && ! $opts['archive-option'] ) + || ( true === $opts['post'] && is_single() && ! $opts['post-option'] ) ) { + return esc_url( $image_src ); + } + } + + if ( class_exists( 'Jetpack_PostImages' ) ) { + global $_wp_additional_image_sizes; + + $args = array( + 'from_thumbnail' => false, + 'from_slideshow' => true, + 'from_gallery' => true, + 'from_attachment' => false, + ); + + $image = Jetpack_PostImages::get_image( $post_id, $args ); + + if ( ! empty( $image ) ) { + $image['width'] = ''; + $image['height'] = ''; + $image['crop'] = ''; + + if ( array_key_exists( $size, $_wp_additional_image_sizes ) ) { + $image['width'] = $_wp_additional_image_sizes[ $size ]['width']; + $image['height'] = $_wp_additional_image_sizes[ $size ]['height']; + $image['crop'] = $_wp_additional_image_sizes[ $size ]['crop']; + } + + $image_src = Jetpack_PostImages::fit_image_url( $image['src'], $image['width'], $image['height'] ); + + // Use the theme's crop setting rather than forcing to true + $image_src = add_query_arg( 'crop', $image['crop'], $image_src ); + + return esc_url( $image_src ); + } + } + + return esc_url( $image_src ); +} + +/** + * Check if post has an image attached, including a fallback. + * + * @param int $post The post ID to check. + * + * @return bool + */ +function jetpack_has_featured_image( $post = null ) { + return (bool) get_the_post_thumbnail( $post ); +} + +/** + * Adds custom class to the array of post classes. + * + * @param array $classes Classes for the post element. + * @param array $class Optional. Comma separated list of additional classes. + * @param array $post_id Unique The post ID to check + * + * @return array $classes + */ +function jetpack_featured_images_post_class( $classes, $class, $post_id ) { + $post_password_required = post_password_required( $post_id ); + $opts = jetpack_featured_images_get_settings(); + + if ( jetpack_has_featured_image( $post_id ) && (bool) 1 === (bool) $opts['fallback-option'] && ! is_attachment() && ! $post_password_required && 'post' === get_post_type() ) { + $classes[] = 'has-post-thumbnail'; + } + + return $classes; +} +add_filter( 'post_class', 'jetpack_featured_images_post_class', 10, 3 ); |