new way of showing gallery covers

apps/gallery/lib/images_utils.php

@@ -0,0 +1,43 @@
+<?php
+require_once('../../../lib/base.php');
+OC_JSON::checkLoggedIn();
+OC_JSON::checkAppEnabled('gallery');
+
+function CroppedThumbnail($imgSrc,$thumbnail_width,$thumbnail_height, $tgtImg, $shift) { 
+    //getting the image dimensions
+    list($width_orig, $height_orig) = getimagesize($imgSrc); 
+    switch (strtolower(substr($imgSrc, strrpos($imgSrc, '.')+1))) {
+      case "jpeg":
+      case "jpg":
+      case "tiff":
+        $myImage = imagecreatefromjpeg($imgSrc);
+        break;
+      case "png":
+        $myImage = imagecreatefrompng($imgSrc);
+        break;
+      default:
+        exit();
+    }
+    $ratio_orig = $width_orig/$height_orig;
+    
+    if ($thumbnail_width/$thumbnail_height > $ratio_orig) {
+       $new_height = $thumbnail_width/$ratio_orig;
+       $new_width = $thumbnail_width;
+    } else {
+       $new_width = $thumbnail_height*$ratio_orig;
+       $new_height = $thumbnail_height;
+    }
+    
+    $x_mid = $new_width/2;  //horizontal middle
+    $y_mid = $new_height/2; //vertical middle
+    
+    $process = imagecreatetruecolor(round($new_width), round($new_height)); 
+
+    imagecopyresampled($process, $myImage, 0, 0, 0, 0, $new_width, $new_height, $width_orig, $height_orig);
+    imagecopyresampled($tgtImg, $process, $shift, 0, ($x_mid-($thumbnail_width/2)), ($y_mid-($thumbnail_height/2)), $thumbnail_width, $thumbnail_height, $thumbnail_width, $thumbnail_height);
+
+    imagedestroy($process);
+    imagedestroy($myImage);
+}
+
+?>