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 // Copyright (C) 2004, 2007 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 namespace System.Drawing {
  33
  34         public sealed class SolidBrush : Brush {
  35
  36                 internal bool isModifiable = true;
  37                 // we keep this cached because calling GdipGetSolidFillColor
  38                 // wouldn't return a "named" color like SD is expected to do
  39                 private Color color;
  40
  41                 internal SolidBrush (IntPtr ptr)
  42                         : base (ptr)
  43                 {
  44                         int val;
  45                         Status status = GDIPlus.GdipGetSolidFillColor (ptr, out val);
  46                         GDIPlus.CheckStatus (status);
  47                         color = Color.FromArgb (val);
  48                 }
  49
  50                 public SolidBrush (Color color)
  51                 {
  52                         this.color = color;
  53                         Status status = GDIPlus.GdipCreateSolidFill (color.ToArgb (), out nativeObject);
  54                         GDIPlus.CheckStatus (status);
  55                 }
  56
  57                 public Color Color {
  58                         get {
  59                                 return color;
  60                         }
  61                         set {
  62                                 if (isModifiable) {
  63                                         color = value;
  64                                         Status status = GDIPlus.GdipSetSolidFillColor (nativeObject, value.ToArgb ());
  65                                         GDIPlus.CheckStatus (status);
  66                                 }
  67                                 else
  68                                         throw new ArgumentException (Locale.GetText ("This SolidBrush object can't be modified."));
  69                         }
  70                 }
  71
  72                 public override object Clone ()
  73                 {
  74                         IntPtr clonePtr;
  75                         Status status = GDIPlus.GdipCloneBrush (nativeObject, out clonePtr);
  76                         GDIPlus.CheckStatus (status);
  77                         // we loose the named color in this case (but so does MS SD)
  78                         return new SolidBrush (clonePtr);
  79                 }
  80
  81                 protected override void Dispose (bool disposing)
  82                 {
  83                         if (disposing && !isModifiable)
  84                                 throw new ArgumentException (Locale.GetText ("This SolidBrush object can't be modified."));
  85
  86                         base.Dispose (disposing);
  87                 }
  88         }
  89 }