ckfinder/_source/Connector/ImageTools.cs

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/*
 * CKFinder
 * ========
 * http://ckfinder.com
 * Copyright (C) 2007-2012, CKSource - Frederico Knabben. All rights reserved.
 *
 * The software, this file and its contents are subject to the CKFinder
 * License. Please read the license.txt file before using, installing, copying,
 * modifying or distribute this file or part of its contents. The contents of
 * this file is part of the Source Code of CKFinder.
 */

using System;
using System.Drawing;
using System.Drawing.Imaging;
using ImageManipulation;

namespace CKFinder.Connector
{
	public class ImageTools
	{
		private ImageTools()
		{ }

		public static bool IsImageExtension( string extension )
		{
			switch ( extension.ToLower() )
			{
				case "jpg":
				case "jpeg":
				case "gif":
				case "png":
				case "bmp":
					return true;
			}
			return false;
		}

		public static bool ValidateImage( string filePath )
		{
			System.Drawing.Image sourceImage;

			try
			{
				sourceImage = System.Drawing.Image.FromFile( filePath );
				sourceImage.Dispose();
				return true;
			}
			catch
			{
				// This is not a valid image. Do nothing.
				return false;
			}
		}

		public static bool ResizeImage( string sourceFile, string targetFile, int maxWidth, int maxHeight, bool preserverAspectRatio, int quality )
		{
			System.Drawing.Image sourceImage;

			try