Code quality changes

GreenshotPlugin/Effects/IEffect.cs

@@ -0,0 +1,45 @@
+/*
+ * Greenshot - a free and open source screenshot tool
+ * Copyright (C) 2007-2016 Thomas Braun, Jens Klingen, Robin Krom
+ * 
+ * For more information see: http://getgreenshot.org/
+ * The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 1 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program 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 General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+using System.Drawing;
+using System.Drawing.Drawing2D;
+
+namespace GreenshotPlugin.Effects
+{
+	/// <summary>
+	/// Interface to describe an effect
+	/// </summary>
+	public interface IEffect {
+		/// <summary>
+		/// Apply this IEffect to the supplied sourceImage.
+		/// In the process of applying the supplied matrix will be modified to represent the changes.
+		/// </summary>
+		/// <param name="sourceImage">Image to apply the effect to</param>
+		/// <param name="matrix">Matrix with the modifications like rotate, translate etc. this can be used to calculate the new location of elements on a canvas</param>
+		/// <returns>new image with applied effect</returns>
+		Image Apply(Image sourceImage, Matrix matrix);
+
+		/// <summary>
+		/// Reset all values to their defaults
+		/// </summary>
+		void Reset();
+	}
+}