From 77749a6009b131dd377e66b680bace06fedcd37f Mon Sep 17 00:00:00 2001
From: Mark Jaquith <markjaquith@git.wordpress.org>
Date: Sat, 10 Oct 2009 08:31:21 +0000
Subject: [PATCH] First pass at canonical post image template functions. see
 #10928

git-svn-id: https://develop.svn.wordpress.org/trunk@12019 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/post-template.php | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/wp-includes/post-template.php b/wp-includes/post-template.php
index f7a5a5bcaf..066a9c4ac4 100644
--- a/wp-includes/post-template.php
+++ b/wp-includes/post-template.php
@@ -893,6 +893,41 @@ function walk_page_dropdown_tree() {
 	return call_user_func_array(array(&$walker, 'walk'), $args);
 }
 
+//
+// Post images
+//
+
+function has_post_image( $post_id = NULL ) {
+	global $id;
+	$post_id = ( NULL === $post_id ) ? $id : $post_id;
+	return !! get_post_image_id( $post_id );
+}
+
+function get_post_image_id( $post_id = NULL ) {
+	global $id;
+	$post_id = ( NULL === $post_id ) ? $id : $post_id;
+	return get_post_meta( $post_id, '_thumbnail_id', true );
+}
+
+function the_post_image( $size = 'thumbnail' ) {
+	echo get_the_post_image( $size );
+}
+
+function get_the_post_image( $size = 'thumbnail', $post_id = NULL ) {
+	global $id;
+	$post_id = ( NULL === $post_id ) ? $id : $post_id;
+	$post_image_id = get_post_image_id( $post_id );
+	$size = apply_filters( 'post_image_size', $size );
+	if ( $post_image_id ) {
+		do_action( 'begin_fetch_post_image_html', $post_id, $post_image_id, $size ); // for "Just In Time" filtering of all of wp_get_attachment_image()'s filters
+		$html = wp_get_attachment_image( $post_image_id, $size );
+		do_action( 'end_fetch_post_image_html', $post_id, $post_image_id, $size );
+	} else {
+		$html = '';
+	}
+	return apply_filters( 'post_image_html', $html, $post_id, $post_image_id );
+}
+
 //
 // Attachments
 //