From c71bfded3dea1754633f29ac8e81fb3ab46b766a Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Wed, 4 Aug 2004 20:40:01 +0000
Subject: - Patch #9657: more intelligent theme() function.  Hopefully, Adrian
 will be   able to use this patch too.

---
 includes/tablesort.inc |  2 +-
 includes/theme.inc     | 23 +++++++++++++++++------
 2 files changed, 18 insertions(+), 7 deletions(-)

(limited to 'includes')

diff --git a/includes/tablesort.inc b/includes/tablesort.inc
index e80eb544f..56d805e1b 100644
--- a/includes/tablesort.inc
+++ b/includes/tablesort.inc
@@ -77,8 +77,8 @@ function tablesort_header($cell, $header, $ts) {
     if ($cell['data'] == $ts['name']) {
       $ts['sort'] = (($ts['sort'] == 'asc') ? 'desc' : 'asc');
       $cell['class'] = 'active';
-      $image = '&nbsp;<img src="' . theme('image', 'arrow-' . $ts['sort'] . '.png') . '" alt="'. t('sort icon') .'" />';
       $title = ($ts['sort'] == 'asc' ? t('sort ascending') : t('sort descending'));
+      $image = '&nbsp;'. theme('image', 'misc/arrow-'. $ts['sort'] .'.png', t('sort icon'), $title);
     }
     else {
       // If the user clicks a different header, we want to sort ascending initially.
diff --git a/includes/theme.inc b/includes/theme.inc
index c43b45df6..60f9dfe43 100644
--- a/includes/theme.inc
+++ b/includes/theme.inc
@@ -235,13 +235,22 @@ function theme_links($links, $delimiter = ' | ') {
 /**
  * Return a themed image.
  *
- * @param $name
- *   The name of the image file.
+ * @param $path
+ *   The path of the image file.
+ * @param $alt
+ *   The alternative text for text-based browsers.
+ * @param $title
+ *   The title text is displayed when the image is hovered in some popular browsers.
+ * @param $attr
+ *   Attributes placed in the img tag.
+ *   This parameter overrides the default auto-detection of width and height.
  * @return
- *   The pathname of the themed image.
+ *   A string containing the image tag.
  */
-function theme_image($name) {
-  return 'misc/'. $name;
+function theme_image($path, $alt = NULL, $title = NULL, $attr = NULL) {
+  if (isset($attr) || (file_exists($path) && (list($width, $height, $type, $attr) = getimagesize($path)))) {
+    return "<img src=\"$path\" $attr alt=\"$alt\" title=\"$title\" />";
+  }
 }
 
 /**
@@ -511,7 +520,9 @@ function theme_error($message) {
  * Return code that emits an XML icon.
  */
 function theme_xml_icon($url) {
-  return '<div class="xml-icon"><a href="'. $url .'"><img src="misc/xml.png" width="36" height="14" alt="'. t('XML feed') .'" /></a></div>';
+  if ($image = theme('image', 'misc/xml.png', t('XML feed'), t('XML feed'))) {
+    return '<div class="xml-icon"><a href="'. $url .'">'. $image. '</a></div>';
+  }
 }
 
 /**
-- 
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