mono/mcs/class/System.Drawing/System.Drawing/Brush.cs

//
// System.Drawing.Brush.cs
//
// Authors:
//   Miguel de Icaza ([email protected])
//   Ravindra ([email protected])
//
// (C) Ximian, Inc.  http://www.ximian.com
// Copyright (C) 2004,2006 Novell, Inc (http://www.novell.com)
//
// 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.
//

namespace System.Drawing
{
	public abstract class Brush : MarshalByRefObject, ICloneable, IDisposable
	{
		internal IntPtr nativeObject;
		abstract public object Clone ();

		internal Brush (IntPtr ptr)
		{
                        nativeObject = ptr;
		}
		
		internal IntPtr NativeObject {
			get {
				return nativeObject;
			}
			set {
				nativeObject = value;
			}
		}

#if NET_2_0
		protected Brush ()
		{

		}		

		protected internal void SetNativeBrush (IntPtr brush)
		{
			nativeObject = brush;
		}
#else
                internal Brush ()
                { 

		}
#endif

		public void Dispose ()
		{
			Dispose (true);
			System.GC.SuppressFinalize (this);
		}

		protected virtual void Dispose (bool disposing)
		{
			// NOTE: this has been known to fail in the past (cairo)
			// but it's the only way to reclaim brush related memory
			if (nativeObject != IntPtr.Zero) {
				GDIPlus.GdipDeleteBrush (nativeObject);
				nativeObject = IntPtr.Zero;
			}			
		}

		~Brush ()
		{
			Dispose (false);
		}
	}
}