From a9e14ddb5134736d7f0239a7bd9fc917b72bbadd Mon Sep 17 00:00:00 2001
From: Hywel Thomas <Hywel Thomas>
Date: Thu, 23 Feb 2012 12:16:21 +0100
Subject: [PATCH] Added ResetTransform method to Context

---
 Xwt.Gtk/Xwt.GtkBackend/ContextBackendHandler.cs | 8 +++++++-
 Xwt/Xwt.Backends/IContextBackendHandler.cs      | 4 +++-
 Xwt/Xwt.Drawing/Context.cs                      | 9 +++++++++
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/Xwt.Gtk/Xwt.GtkBackend/ContextBackendHandler.cs b/Xwt.Gtk/Xwt.GtkBackend/ContextBackendHandler.cs
index ce1f48b8..9b6de308 100644
--- a/Xwt.Gtk/Xwt.GtkBackend/ContextBackendHandler.cs
+++ b/Xwt.Gtk/Xwt.GtkBackend/ContextBackendHandler.cs
@@ -254,7 +254,13 @@ namespace Xwt.GtkBackend
 			ctx.Context.Fill ();*/
 		}
 		
-		public void Rotate (object backend, double angle)
+		public void ResetTransform (object backend)
+		{
+			GtkContext gc = (GtkContext)backend;
+			gc.Context.IdentityMatrix();
+		}
+
+        public void Rotate (object backend, double angle)
 		{
 			GtkContext gc = (GtkContext)backend;
 			gc.Context.Rotate ((angle * System.Math.PI) / 180);
diff --git a/Xwt/Xwt.Backends/IContextBackendHandler.cs b/Xwt/Xwt.Backends/IContextBackendHandler.cs
index c605ffa0..20dddd28 100644
--- a/Xwt/Xwt.Backends/IContextBackendHandler.cs
+++ b/Xwt/Xwt.Backends/IContextBackendHandler.cs
@@ -86,7 +86,9 @@ namespace Xwt.Backends
 		void DrawImage (object backend, object img, double x, double y, double alpha);
 		
 		void DrawImage (object backend, object img, double x, double y, double width, double height, double alpha);
-		
+
+		void ResetTransform (object backend);
+
 		void Rotate (object backend, double angle);
 		
 		void Translate (object backend, double tx, double ty);
diff --git a/Xwt/Xwt.Drawing/Context.cs b/Xwt/Xwt.Drawing/Context.cs
index 65d6bd35..b788b7d0 100644
--- a/Xwt/Xwt.Drawing/Context.cs
+++ b/Xwt/Xwt.Drawing/Context.cs
@@ -245,6 +245,15 @@ namespace Xwt.Drawing
 		{
 			handler.DrawImage (Backend, GetBackend (img), rect.X, rect.Y, rect.Width, rect.Height, alpha);
 		}
+
+        /// <summary>
+        /// Resets the Current Trasnformation Matrix (CTM) to the Identity Matrix
+        /// </summary>
+		public void ResetTransform ()
+		{
+			handler.ResetTransform (Backend);
+		}
+		
 		
 		/// <summary>
 		/// Applies a rotation transformation