mcs/class/Managed.Windows.Forms/System.Windows.Forms/PaintEventArgs.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2004 Novell, Inc.
  21 //
  22 // Authors:
  23 //      Peter Bartok    pbartok@novell.com
  24 //
  25
  26
  27 // COMPLETE
  28
  29 using System.Drawing;
  30
  31 namespace System.Windows.Forms {
  32         public class PaintEventArgs : EventArgs, IDisposable {
  33                 private Graphics        graphics;
  34                 private Rectangle       clip_rectangle;
  35
  36                 #region Public Constructors
  37                 public PaintEventArgs(System.Drawing.Graphics graphics, System.Drawing.Rectangle clipRect) {
  38                         this.graphics=graphics;
  39                         this.clip_rectangle=clipRect;
  40                 }
  41                 #endregion      // Public Constructors
  42
  43                 #region Public Instance Properties
  44                 public Rectangle ClipRectangle {
  45                         get {
  46                                 return this.clip_rectangle;
  47                         }
  48                 }
  49
  50                 public Graphics Graphics {
  51                         get {
  52                                 return this.graphics;
  53                         }
  54                 }
  55                 #endregion      // Public Instance Properties
  56
  57                 #region Public Instance Methods
  58                 public void Dispose() {
  59                         Dispose(true);
  60                         GC.SuppressFinalize(this);
  61                 }
  62                 #endregion      // Public Instance Methods
  63
  64                 // Returns the previous graphics
  65                 internal Graphics SetGraphics (Graphics g)
  66                 {
  67                         Graphics res = graphics;
  68                         graphics = g;
  69
  70                         return res;
  71                 }
  72
  73                 #region Protected Instance Methods
  74                 ~PaintEventArgs() {
  75                         Dispose(false);
  76                 }
  77
  78                 protected virtual void Dispose(bool disposing) {
  79                         if (this.graphics!=null) {
  80                                 graphics.Dispose();
  81                                 this.graphics=null;
  82                         }
  83                 }
  84                 #endregion      // Protected Instance Methods
  85         }
  86 }