mcs/class/System.Windows.Forms/System.Windows.Forms/OSFeature.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) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Peter Bartok    (pbartok@novell.com)
  24 //
  25 //
  26
  27 // COMPLETE
  28
  29 namespace System.Windows.Forms {
  30         public class OSFeature : FeatureSupport {
  31                 #region Local Variables
  32                 private static OSFeature        feature = new OSFeature();
  33                 #endregion      // Local Variables
  34
  35                 #region Protected Constructors
  36                 protected OSFeature() {
  37
  38                 }
  39                 #endregion      // Protected Constructors
  40
  41                 #region Public Static Fields
  42                 public static readonly object LayeredWindows;
  43                 public static readonly object Themes;
  44                 #endregion      // Public Static Fields
  45
  46                 #region Public Static Properties
  47                 public static OSFeature Feature {
  48                         get {
  49                                 return  feature;
  50                         }
  51                 }
  52
  53                 public static bool IsPresent (SystemParameter enumVal)
  54                 {
  55 #pragma warning disable 219
  56                         object o;
  57 #pragma warning restore 219
  58
  59                         switch (enumVal) {
  60                                 case SystemParameter.DropShadow:
  61                                         try {
  62                                                 o = SystemInformation.IsDropShadowEnabled;
  63                                                 return true;
  64                                         } catch (Exception) { return false; }
  65                                 case SystemParameter.FlatMenu:
  66                                         try {
  67                                                 o = SystemInformation.IsFlatMenuEnabled;
  68                                                 return true;
  69                                         } catch (Exception) { return false; }
  70                                 case SystemParameter.FontSmoothingContrastMetric:
  71                                         try {
  72                                                 o = SystemInformation.FontSmoothingContrast;
  73                                                 return true;
  74                                         } catch (Exception) { return false; }
  75                                 case SystemParameter.FontSmoothingTypeMetric:
  76                                         try {
  77                                                 o = SystemInformation.FontSmoothingType;
  78                                                 return true;
  79                                         } catch (Exception) { return false; }
  80                                 case SystemParameter.MenuFadeEnabled:
  81                                         try {
  82                                                 o = SystemInformation.IsMenuFadeEnabled;
  83                                                 return true;
  84                                         } catch (Exception) { return false; }
  85                                 case SystemParameter.SelectionFade:
  86                                         try {
  87                                                 o = SystemInformation.IsSelectionFadeEnabled;
  88                                                 return true;
  89                                         } catch (Exception) { return false; }
  90                                 case SystemParameter.ToolTipAnimationMetric:
  91                                         try {
  92                                                 o = SystemInformation.IsToolTipAnimationEnabled;
  93                                                 return true;
  94                                         } catch (Exception) { return false; }
  95                                 case SystemParameter.UIEffects:
  96                                         try {
  97                                                 o = SystemInformation.UIEffectsEnabled;
  98                                                 return true;
  99                                         } catch (Exception) { return false; }
 100                                 case SystemParameter.CaretWidthMetric:
 101                                         try {
 102                                                 o = SystemInformation.CaretWidth;
 103                                                 return true;
 104                                         } catch (Exception) { return false; }
 105                                 case SystemParameter.VerticalFocusThicknessMetric:
 106                                         try {
 107                                                 o = SystemInformation.VerticalFocusThickness;
 108                                                 return true;
 109                                         } catch (Exception) { return false; }
 110                                 case SystemParameter.HorizontalFocusThicknessMetric:
 111                                         try {
 112                                                 o = SystemInformation.HorizontalFocusThickness;
 113                                                 return true;
 114                                         } catch (Exception) { return false; }
 115                         }
 116
 117                         return false;
 118                 }
 119                 #endregion      // Public Static Properties
 120
 121                 #region Public Instance Methods
 122                 public override Version GetVersionPresent(object feature) {
 123                         if (feature == Themes) {
 124                                 return ThemeEngine.Current.Version;
 125                         }
 126                         return null;
 127                 }
 128                 #endregion      // Public Instance Methods
 129         }
 130 }