mirror of
https://github.com/10h30/display-featured-image-genesis.git
synced 2026-06-05 15:08:20 +09:00
Robin Cornett
248 lines
8.4 KiB
PHP
248 lines
8.4 KiB
PHP
<?php
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/**
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* Common functions for plugin
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*
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* @package DisplayFeaturedImageGenesis
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* @since 1.2.1
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*/
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class Display_Featured_Image_Genesis_Common {
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/**
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* current plugin version
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* @var string
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* @since 1.4.3
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*/
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public static $version = '1.5.0';
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/**
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* set and retreive variables for the featured image.
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* @return $item
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*
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* @since 1.1.0
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*/
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public static function get_image_variables() {
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$item = new stdClass();
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// variables internal to this function
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$frontpage = get_option( 'show_on_front' ); // either 'posts' or 'page'
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$postspage = get_option( 'page_for_posts' );
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$displaysetting = get_option( 'displayfeaturedimagegenesis' );
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$move_excerpts = $displaysetting['move_excerpts'];
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$postspage_image = get_post_thumbnail_id( $postspage );
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if ( is_singular() ) { // just checking for handling conditional variables set by width
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$thumb_metadata = wp_get_attachment_metadata( get_post_thumbnail_id( get_the_ID() ) ); // needed only for the next line
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$width = '';
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if ( $thumb_metadata ) {
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$width = $thumb_metadata['width'];
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}
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}
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// sitewide variables used outside this function
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$item->fallback = esc_attr( $displaysetting['default'] ); // url only
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$item->fallback_id = self::get_image_id( $item->fallback ); // gets image id with attached metadata
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$item->large = absint( get_option( 'large_size_w' ) );
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$item->medium = absint( get_option( 'medium_size_w' ) );
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$item->reduce = absint( $displaysetting['less_header'] );
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// Set Featured Image source ID
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$image_id = ''; // blank if nothing else
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// set here with fallback preemptively, if it exists
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if ( ! empty( $item->fallback ) ) {
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$image_id = $item->fallback_id;
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}
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// if it's a home page with a static front page, and there is a featured image set on the home page
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if ( is_home() && 'page' === $frontpage && ! empty( $postspage_image ) ) {
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$image_id = $postspage_image;
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}
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// taxonomy
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elseif ( is_category() || is_tag() || is_tax() ) {
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$term = get_queried_object();
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$t_id = $term->term_id;
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$term_meta = get_option( "taxonomy_$t_id" );
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$image_id = self::get_image_id( $term_meta['dfig_image'] );
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}
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// any singular post/page/CPT with either a post_thumbnail larger than medium size OR there is no $item->fallback
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elseif ( is_singular() ) {
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if ( ( $width > $item->medium ) && ! in_array( get_post_type(), self::use_fallback_image() ) ) {
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$image_id = get_post_thumbnail_id( get_the_ID() );
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}
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elseif ( ! has_post_thumbnail() || $width <= $item->medium ) {
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$taxonomies = get_taxonomies();
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$args = array( 'orderby' => 'count', 'order' => 'ASC' );
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$terms = wp_get_object_terms( get_the_ID(), $taxonomies, $args );
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foreach ( $terms as $term ) {
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$t_id = $term->term_id;
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$term_meta = get_option( "taxonomy_$t_id" );
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if ( $term_meta['dfig_image'] ) {
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$image_id = self::get_image_id( $term_meta['dfig_image'] );
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}
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}
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}
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}
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//now actually set the backstretch image source, which includes some metadata
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$metadata = wp_get_attachment_metadata( $image_id );
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// turn Photon off so we can get the correct image
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$photon_removed = '';
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if ( class_exists( 'Jetpack' ) && Jetpack::is_module_active( 'photon' ) ) {
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$photon_removed = remove_filter( 'image_downsize', array( Jetpack_Photon::instance(), 'filter_image_downsize' ) );
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}
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$item->backstretch = wp_get_attachment_image_src( $image_id, 'displayfeaturedimage_backstretch' );
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$item->width = '';
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if ( ! empty( $item->backstretch ) ) {
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$item->width = $metadata['width'];
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}
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// set a content variable so backstretch doesn't show if full size image exists in post.
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$item->content = '';
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// declare this last so that $item->backstretch is set.
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if ( ! is_admin() && is_singular() ) {
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$fullsize = wp_get_attachment_image_src( $image_id, 'original' );
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$post = get_post();
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$item->content = strpos( $post->post_content, 'src="' . $fullsize[0] );
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// reset backstretch image source to fallback if it exists and the featured image is being used in content.
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if ( ! empty( $item->fallback ) && false !== $item->content ) {
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$item->backstretch = wp_get_attachment_image_src( $item->fallback_id, 'displayfeaturedimage_backstretch' );
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$item->content = strpos( $post->post_content, 'src="' . $item->backstretch[0] );
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}
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}
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// turn Photon back on
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if ( $photon_removed ) {
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add_filter( 'image_downsize', array( Jetpack_Photon::instance(), 'filter_image_downsize' ), 10, 3 );
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}
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// Set Post/Page Title
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$item->title = $item->description = '';
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if ( is_singular() ) {
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$item->title = get_the_title();
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if ( has_excerpt() ) {
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$item->description = get_the_excerpt();
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}
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}
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elseif ( is_home() && 'page' === $frontpage ) {
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$item->title = get_post( $postspage )->post_title;
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$item->description = get_post( $postspage )->post_excerpt;
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}
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elseif ( is_category() || is_tag() || is_tax() ) {
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$term = is_tax() ? get_term_by( 'slug', get_query_var( 'term' ), get_query_var( 'taxonomy' ) ) : get_queried_object();
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if ( ! $term || ! isset( $term->meta ) ) {
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return;
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}
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$item->title = $term->meta['headline'];
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$item->description = $term->meta['intro_text'];
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}
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elseif ( is_author() ) {
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$item->title = get_the_author_meta( 'headline', (int) get_query_var( 'author' ) );
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$item->description = get_the_author_meta( 'intro_text', (int) get_query_var( 'author' ) );
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}
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elseif ( is_post_type_archive() && genesis_has_post_type_archive_support() && ! empty( $item->fallback ) ) {
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$item->title = genesis_get_cpt_option( 'headline' );
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$item->description = genesis_get_cpt_option( 'intro_text' );
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}
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return $item;
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}
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/**
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* Get the ID of each image dynamically.
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*
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* @since 1.2.0
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*
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* @author Philip Newcomer
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* @link http://philipnewcomer.net/2012/11/get-the-attachment-id-from-an-image-url-in-wordpress/
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*/
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public static function get_image_id( $attachment_url ) {
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global $wpdb;
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$attachment_id = false;
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// Get the upload directory paths
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$upload_dir_paths = wp_upload_dir();
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// Make sure the upload path base directory exists in the attachment URL, to verify that we're working with a media library image
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if ( false !== strpos( $attachment_url, $upload_dir_paths['baseurl'] ) ) {
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// If this is the URL of an auto-generated thumbnail, get the URL of the original image
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$attachment_url = preg_replace( '(-\d{3,4}x\d{3,4}.)', '.', $attachment_url );
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// Remove the upload path base directory from the attachment URL
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$attachment_url = str_replace( $upload_dir_paths['baseurl'] . '/', '', $attachment_url );
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// Finally, run a custom database query to get the attachment ID from the modified attachment URL
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$attachment_id = $wpdb->get_var( $wpdb->prepare( "SELECT wposts.ID FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_key = '_wp_attached_file' AND wpostmeta.meta_value = '%s' AND wposts.post_type = 'attachment'", $attachment_url ) );
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}
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return $attachment_id;
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}
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/**
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* skip certain post types
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* @return filter creates a new filter for themes/plugins to use to skip certain post types
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*
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* @since 1.0.1
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*/
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public static function get_skipped_posttypes() {
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$displaysetting = get_option( 'displayfeaturedimagegenesis' );
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$skip = $displaysetting['exclude_front'];
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$post_types = array();
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$post_types[] = 'attachment';
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$post_types[] = 'revision';
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$post_types[] = 'nav_menu_item';
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if ( $skip ) $post_types[] = is_front_page();
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return apply_filters( 'display_featured_image_genesis_skipped_posttypes', $post_types );
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}
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/**
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* use fallback image as backstretch
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* @return filter creates a new filter for themes/plugins to use to use the fallback image even if a large featured image is in place
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*
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* @since 1.2.0
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*/
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public static function use_fallback_image() {
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$post_types = array();
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$post_types[] = 'attachment';
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$post_types[] = 'revision';
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$post_types[] = 'nav_menu_item';
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return apply_filters( 'display_featured_image_genesis_use_default', $post_types );
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}
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/**
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* don't show excerpts even if they exist.
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* @return filter creates a new filter for themes/plugins to omit the excerpt on a post type even if an excerpt exists.
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*
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* @since 1.3.0
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*/
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public static function omit_excerpt() {
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$post_types = array();
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$post_types[] = 'attachment';
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$post_types[] = 'revision';
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$post_types[] = 'nav_menu_item';
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return apply_filters( 'display_featured_image_genesis_omit_excerpt', $post_types );
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}
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}
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