mcs/class/System.Drawing/System.Drawing/SolidBrush.cs

   1 //
   2 // System.Drawing.SolidBrush.cs
   3 //
   4 // Author:
   5 //   Dennis Hayes (dennish@Raytek.com)
   6 //   Alexandre Pigolkine(pigolkine@gmx.de)
   7 //   Ravindra (rkumar@novell.com)
   8 //
   9 // (C) 2002 Ximian, Inc.
  10 // (C) 2004 Novell, Inc.
  11 //
  12 using System;
  13
  14 namespace System.Drawing
  15 {
  16         public sealed class SolidBrush : Brush {
  17
  18                 internal bool isModifiable = true;
  19                 private Color color;
  20
  21                 internal SolidBrush (IntPtr ptr)
  22                         : base (ptr)
  23                 {
  24                         int val;
  25                         Status status = GDIPlus.GdipGetSolidFillColor (ptr, out val);
  26                         GDIPlus.CheckStatus (status);
  27                         color = Color.FromArgb (val);
  28                 }
  29
  30                 public SolidBrush (Color color)
  31                 {
  32                         this.color = color;
  33                         int brush;
  34                         Status status = GDIPlus.GdipCreateSolidFill (color.ToArgb (), out brush);
  35                         GDIPlus.CheckStatus (status);
  36                         nativeObject = (IntPtr) brush;
  37                 }
  38
  39                 public Color Color {
  40                         get {
  41                                 return color;
  42                         }
  43                         set {
  44                                 if (isModifiable) {
  45                                         color = value;
  46                                         Status status = GDIPlus.GdipSetSolidFillColor (nativeObject, value.ToArgb ());
  47                                         GDIPlus.CheckStatus (status);
  48                                 }
  49                                 else
  50                                         throw new ArgumentException ("This SolidBrush object can't be modified.");
  51                         }
  52                 }
  53
  54                 public override object Clone()
  55                 {
  56                         IntPtr clonePtr;
  57                         Status status = GDIPlus.GdipCloneBrush (nativeObject, out clonePtr);
  58                         GDIPlus.CheckStatus (status);
  59
  60                         SolidBrush clone = new SolidBrush (clonePtr);
  61                         return clone;
  62                 }
  63
  64                 protected override void Dispose (bool disposing)
  65                 {
  66                         // SolidBrush is disposed if and only if it is not disposed
  67                         // and it is modifiable OR it is not disposed and it is being
  68                         // collected by GC.
  69                         if ((disposed == false) && (isModifiable || disposing == false)) {
  70                                 Status status = GDIPlus.GdipDeleteBrush (nativeObject);
  71                                 GDIPlus.CheckStatus (status);
  72                                 disposed = true;
  73                         }
  74                         else
  75                                 throw new ArgumentException ("This SolidBrush object can't be modified.");
  76                 }
  77         }
  78 }
  79