mirror of
https://github.com/10h30/display-featured-image-genesis.git
synced 2026-06-05 15:08:20 +09:00
Robin Cornett
110 lines
3.5 KiB
PHP
110 lines
3.5 KiB
PHP
<?php
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/**
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* @package DisplayFeaturedImageGenesis
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* @author Robin Cornett <hello@robincornett.com>
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* @license GPL-2.0+
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* @link http://robincornett.com
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* @copyright 2014 Robin Cornett Creative, LLC
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*/
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class Display_Featured_Image_Genesis_RSS {
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/**
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* Decide whether or not to add the featured image to the feed or the feed excerpt
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*
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* @return filter the_excerpt_rss (if summaries) or the_content_feed (full text)
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* @since 1.5.0
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*/
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public function maybe_do_feed() {
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$displaysetting = get_option( 'displayfeaturedimagegenesis' );
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$feed_image = $displaysetting['feed_image'];
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$rss_option = get_option( 'rss_use_excerpt' );
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$post_types = array();
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$skipped_types = apply_filters( 'display_featured_image_genesis_skipped_posttypes', $post_types );
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//* if the user isn't sending images to the feed, we're done
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if ( ! $feed_image || ( in_array( get_post_type(), $skipped_types ) ) ) {
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return;
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}
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// if the feed is summary, filter the excerpt
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$which_filter = 'the_excerpt_rss';
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$priority = 1000;
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// if the feed is full text, filter the content
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if ( '0' === $rss_option ) {
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$which_filter = 'the_content_feed';
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$priority = 15;
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}
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add_filter( $which_filter, array( $this, 'add_image_to_feed' ), $priority );
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}
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/**
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* add the featured image to the feed, unless it already exists
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* includes allowances for Send Images to RSS plugin, which processes before this
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*
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* @param return $content
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* @since 1.5.0
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*/
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public function add_image_to_feed( $content ) {
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// if the post doesn't have a thumbnail, we're done here
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if ( ! has_post_thumbnail() && ! is_feed() ) {
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return $content;
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}
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// first check: see if the featured image already exists in full in the content
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$size = 'original';
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if ( class_exists( 'SendImagesRSS' ) ) {
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$simplify = get_option( 'sendimagesrss_simplify_feed' );
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$alt_feed = get_option( 'sendimagesrss_alternate_feed' );
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if ( ! $simplify && ( ( $alt_feed && is_feed( 'email' ) ) || ! $alt_feed ) ) {
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$size = 'mailchimp';
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}
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}
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$post_thumbnail = wp_get_attachment_image_src( get_post_thumbnail_id(), $size );
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$image_content = strpos( $content, 'src="' . $post_thumbnail[0] );
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$rss_option = get_option( 'rss_use_excerpt' );
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// if the featured image already exists in all its glory in the content, we're done here
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if ( false !== $image_content && '0' === $rss_option ) {
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return $content;
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}
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// reset size to large so we don't send huge files to the feed
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$size = 'large';
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if ( class_exists( 'SendImagesRSS' ) ) {
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$simplify = get_option( 'sendimagesrss_simplify_feed' );
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$alt_feed = get_option( 'sendimagesrss_alternate_feed' );
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// if the user is using Send Images to RSS, send the right images to the right feeds
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if ( ! $simplify && ( ( $alt_feed && is_feed( 'email' ) ) || ! $alt_feed ) ) {
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$size = 'mailchimp';
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$class = 'rss-mailchimp';
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}
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}
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$align = '';
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$style = 'display:block;margin:10px auto;';
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$class = 'rss-featured-image';
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// if the feed output is descriptions only, change image size to thumbnail with small alignment
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if ( '1' === $rss_option ) {
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$size = 'thumbnail';
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$align = 'left';
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$style = 'margin:0px 0px 20px 20px;';
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$class = 'rss-small';
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}
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// whew. build the image!
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$image = get_the_post_thumbnail( get_the_ID(), $size, array( 'align' => $align, 'style' => $style, 'class' => $class ) );
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$image = apply_filters( 'display_featured_image_genesis_modify_rss_image', $image );
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return $image . $content;
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}
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}
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