PaintEventArgs.cs

// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2004 Novell, Inc.
//
// Authors:
//	Peter Bartok	pbartok@novell.com
//


// COMPLETE

using System.Drawing;

namespace System.Windows.Forms {
	public class PaintEventArgs : EventArgs, IDisposable {
		private Graphics	graphics;
		private Rectangle	clip_rectangle;
		internal bool		Handled;
		private bool		disposed;
		
		#region Public Constructors
		public PaintEventArgs (Graphics graphics, Rectangle clipRect)
		{
#if NET_2_0
			if (graphics == null)
				throw new ArgumentNullException ("graphics");
#endif
			this.graphics=graphics;
			this.clip_rectangle=clipRect;
		}
		#endregion	// Public Constructors

		#region Public Instance Properties
		public Rectangle ClipRectangle {
			get {
				return this.clip_rectangle;
			}
		}

		public Graphics Graphics {
			get {
				return this.graphics;
			}
		}
		#endregion	// Public Instance Properties

		#region Public Instance Methods
		public void Dispose() {
			Dispose(true);
			GC.SuppressFinalize(this);
		}
		#endregion	// Public Instance Methods

                // Returns the previous graphics
		internal Graphics SetGraphics (Graphics g)
		{
			Graphics res = graphics;
			graphics = g;

			return res;
		}

		internal void SetClip (Rectangle clip)
		{
			clip_rectangle = clip;
		}
		
		#region Protected Instance Methods
		~PaintEventArgs() {
			Dispose(false);
		}

		protected virtual void Dispose (bool disposing)
		{
			if (!disposed) {
#if !NET_2_0

				if (graphics != null)
					graphics.Dispose ();
#endif
				disposed = true;
			}
		}
		#endregion	// Protected Instance Methods
	}
}