class/System.Windows/System.Windows.Input/StylusPoint.cs

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   3 //
   4 // Copyright 2007 Novell, Inc.
   5 //
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  11 // permit persons to whom the Software is furnished to do so, subject to
  12 // the following conditions:
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  14 // The above copyright notice and this permission notice shall be
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  24 //
  25
  26 using System;
  27 using System.Threading;
  28 using System.Windows;
  29 using System.Windows.Media;
  30 using System.Windows.Input;
  31 using System.Runtime.InteropServices;
  32 using Mono;
  33
  34 namespace System.Windows.Input
  35 {
  36         public struct StylusPoint : INativeDependencyObjectWrapper
  37         {
  38                 // FIXME: we shouldn't implement INativeDependencyObjectWrapper and have toggle ref behaviour,
  39                 // since a struct can't have a destructor, we'll always end up leaking the native object.
  40                 // The right thing to do is probably to just have a managed struct with no native representation.
  41                 internal StylusPoint (IntPtr raw)
  42                 {
  43                         NativeHandle = raw;
  44                 }
  45
  46                 public StylusPoint (double x, double y) : this (NativeMethods.stylus_point_new ())
  47                 {
  48                         X = x;
  49                         Y = y;
  50                 }
  51
  52                 public float PressureFactor {
  53                         get { return (float) ((INativeDependencyObjectWrapper)this).GetValue (PressureFactorProperty); }
  54                         set { ((INativeDependencyObjectWrapper)this).SetValue (PressureFactorProperty, value); }
  55                 }
  56
  57                 public double X {
  58                         get { return (double) ((INativeDependencyObjectWrapper)this).GetValue (XProperty); }
  59                         set { ((INativeDependencyObjectWrapper)this).SetValue (XProperty, value); }
  60                 }
  61
  62                 public double Y {
  63                         get { return (double) ((INativeDependencyObjectWrapper)this).GetValue (YProperty); }
  64                         set { ((INativeDependencyObjectWrapper)this).SetValue (YProperty, value); }
  65                 }
  66
  67                 private static readonly DependencyProperty PressureFactorProperty =
  68                         DependencyProperty.Lookup (Kind.STYLUSPOINT, "PressureFactor", typeof (float));
  69
  70                 private static readonly DependencyProperty XProperty =
  71                         DependencyProperty.Lookup (Kind.STYLUSPOINT, "X", typeof (double));
  72
  73                 private static readonly DependencyProperty YProperty =
  74                         DependencyProperty.Lookup (Kind.STYLUSPOINT, "Y", typeof (double));
  75
  76 #region "INativeDependencyObjectWrapper interface"
  77                 IntPtr _native;
  78
  79                 internal IntPtr NativeHandle {
  80                         get { return _native; }
  81                         set {
  82                                 if (_native != IntPtr.Zero) {
  83                                         throw new InvalidOperationException ("Application.native is already set");
  84                                 }
  85
  86                                 _native = value;
  87
  88                                 NativeDependencyObjectHelper.AddNativeMapping (value, this);
  89                         }
  90                 }
  91
  92                 IntPtr INativeEventObjectWrapper.NativeHandle {
  93                         get { return NativeHandle; }
  94                         set { NativeHandle = value; }
  95                 }
  96
  97                 object INativeDependencyObjectWrapper.GetValue (DependencyProperty dp)
  98                 {
  99                         return NativeDependencyObjectHelper.GetValue (this, dp);
 100                 }
 101
 102                 void INativeDependencyObjectWrapper.SetValue (DependencyProperty dp, object value)
 103                 {
 104                         NativeDependencyObjectHelper.SetValue (this, dp, value);
 105                 }
 106
 107                 object INativeDependencyObjectWrapper.GetAnimationBaseValue (DependencyProperty dp)
 108                 {
 109                         return NativeDependencyObjectHelper.GetAnimationBaseValue (this, dp);
 110                 }
 111
 112                 object INativeDependencyObjectWrapper.ReadLocalValue (DependencyProperty dp)
 113                 {
 114                         return NativeDependencyObjectHelper.ReadLocalValue (this, dp);
 115                 }
 116
 117                 void INativeDependencyObjectWrapper.ClearValue (DependencyProperty dp)
 118                 {
 119                         NativeDependencyObjectHelper.ClearValue (this, dp);
 120                 }
 121
 122                 Kind INativeEventObjectWrapper.GetKind ()
 123                 {
 124                         return Kind.STYLUSPOINT;
 125                 }
 126
 127                 bool INativeDependencyObjectWrapper.CheckAccess ()
 128                 {
 129                         return Thread.CurrentThread == DependencyObject.moonlight_thread;
 130                 }
 131 #endregion
 132         }
 133 }