update

core/lib/WideImage/Operation/CorrectGamma.php

@@ -0,0 +1,48 @@
+<?php
+	/**
+ * @author Gasper Kozak
+ * @copyright 2007-2011
+
+    This file is part of WideImage.
+		
+    WideImage is free software; you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 2.1 of the License, or
+    (at your option) any later version.
+		
+    WideImage is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+		
+    You should have received a copy of the GNU Lesser General Public License
+    along with WideImage; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    * @package Internal/Operations
+  **/
+	
+	/**
+	 * CorrectGamma operation class
+	 * 
+	 * @package Internal/Operations
+	 */
+	class WideImage_Operation_CorrectGamma
+	{
+		/**
+		 * Executes imagegammacorrect()
+		 *
+		 * @param WideImage_Image $image
+		 * @param numeric $input_gamma
+		 * @param numeric $output_gamma
+		 * @return WideImage_TrueColorImage
+		 */
+		function execute($image, $input_gamma, $output_gamma)
+		{
+			$new = $image->copy();
+			if (!imagegammacorrect($new->getHandle(), $input_gamma, $output_gamma))
+				throw new WideImage_GDFunctionResultException("imagegammacorrect() returned false");
+			
+			return $new;
+		}
+	}