From 20168b6af478e68224bd8f4d5cd9d002d57d5195 Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Fri, 11 May 2007 11:45:11 +0000
Subject: - Modified patch #142798 by Steven and sime: introduced a new image
 API function: image_scale_and_crop()

---
 includes/image.inc | 34 ++++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/includes/image.inc b/includes/image.inc
index 6f20c082d..8fcb5adae 100644
--- a/includes/image.inc
+++ b/includes/image.inc
@@ -102,11 +102,41 @@ function image_get_info($file) {
   return $details;
 }
 
+/**
+ * Scales an image to the exact width and height given. Maintains the
+ * original file's aspect ratio by cropping the image equally on both
+ * sides, or equally on the top and bottom.  This function is, for
+ * example, useful to create uniform sized avatars from larger images.
+ *
+ * The resulting image always has the exact target dimensions.
+ *
+ * @param $source         The file path of the source image
+ * @param $destination    The file path of the destination image
+ * @param $width          The target width
+ * @param $height         The target height
+ *
+ * @return TRUE or FALSE, based on success
+ */
+function image_scale_and_crop($source, $destination, $width, $height) {
+  $info = image_get_info($source);
+
+  $scale = max($width / $info['width'], $height / $info['height']);
+  $x = round(($info['width'] * $scale - $width) / 2);
+  $y = round(($info['height'] * $scale - $height) / 2);
+
+  if (image_toolkit_invoke('resize', array($source, $destination, $info['width'] * $scale, $info['height'] * $scale))) {
+    return image_toolkit_invoke('crop', array($destination, $destination, $x, $y, $width, $height));
+  }
+  return FALSE;
+}
+
 /**
  * Scales an image to the given width and height while maintaining aspect
  * ratio.
  *
- * @param $source         The filepath of the source image
+ * The resulting image can be smaller for one or both target dimensions.
+ *
+ * @param $source         The file path of the source image
  * @param $destination    The file path of the destination image
  * @param $width          The target width
  * @param $height         The target height
@@ -116,7 +146,7 @@ function image_get_info($file) {
 function image_scale($source, $destination, $width, $height) {
   $info = image_get_info($source);
 
-  // don't scale up
+  // Don't scale up.
   if ($width >= $info['width'] && $height >= $info['height']) {
     return FALSE;
   }
-- 
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