class/System.Windows/System.Windows/UIElement.cs

   1 //
   2 // System.Windows.UIElement.cs
   3 //
   4 // Contact:
   5 //   Moonlight List (moonlight-list@lists.ximian.com)
   6 //
   7 // Copyright 2007 Novell, Inc.
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using System.Collections.Generic;
  31 using System.Runtime.InteropServices;
  32 using System.Windows;
  33 using System.Windows.Automation.Peers;
  34 using System.Windows.Media;
  35 using System.Windows.Input;
  36 using Mono;
  37
  38 namespace System.Windows {
  39         public abstract partial class UIElement : DependencyObject {
  40
  41                 public Transform RenderTransform {
  42                         get {
  43                                 Transform t = (Transform)GetValue (RenderTransformProperty);
  44                                 return t == null ? new MatrixTransform () : t;
  45                         }
  46                         set {
  47                                 if (value == null)
  48                                         ClearValue (RenderTransformProperty);
  49                                 else
  50                                         SetValue (RenderTransformProperty, value);
  51                         }
  52                 }
  53
  54                 public bool CaptureMouse ()
  55                 {
  56                         return NativeMethods.uielement_capture_mouse (native);
  57                 }
  58
  59                 public void ReleaseMouseCapture ()
  60                 {
  61                         NativeMethods.uielement_release_mouse_capture (native);
  62                 }
  63
  64                 public void Arrange (Rect finalRect)
  65                 {
  66                         if (finalRect.IsEmpty)
  67                                 throw new InvalidOperationException ("Empty Rect");
  68
  69                         if (Double.IsInfinity (finalRect.Width) || Double.IsInfinity (finalRect.Height) || Double.IsInfinity (finalRect.X) || Double.IsInfinity (finalRect.Y))
  70                                 throw new InvalidOperationException ("Infinite Rect");
  71                         if (Double.IsNaN (finalRect.Width) || Double.IsNaN (finalRect.Height) || Double.IsNaN (finalRect.X) || Double.IsNaN (finalRect.Y))
  72                                 throw new InvalidOperationException ("NaN Rect");
  73
  74                         NativeMethods.uielement_arrange(native, finalRect);
  75                 }
  76
  77                 public void InvalidateArrange ()
  78                 {
  79                         NativeMethods.uielement_invalidate_arrange(native);
  80                 }
  81
  82                 public void Measure (Size availableSize)
  83                 {
  84                         NativeMethods.uielement_measure (native, availableSize);
  85                 }
  86
  87                 public void InvalidateMeasure ()
  88                 {
  89                         NativeMethods.uielement_invalidate_measure (native);
  90                 }
  91
  92                 public void UpdateLayout ()
  93                 {
  94                         NativeMethods.uielement_update_layout (native);
  95                 }
  96
  97                 public GeneralTransform TransformToVisual (UIElement visual)
  98                 {
  99                         IntPtr t = NativeMethods.uielement_get_transform_to_uielement (native, visual == null ? IntPtr.Zero : visual.native);
 100
 101                         return (MatrixTransform) NativeDependencyObjectHelper.Lookup (Kind.MATRIXTRANSFORM, t);
 102                 }
 103
 104                 protected virtual AutomationPeer OnCreateAutomationPeer ()
 105                 {
 106                         // there's no automation object associated with UIElement so null is returned
 107                         // it could have been abtract but that that would have forced everyone (without
 108                         // automation support) to override this default
 109                         return null;
 110                 }
 111
 112                 internal AutomationPeer AutomationPeer {
 113                         get; set;
 114                 }
 115
 116                 // needed by FrameworkElementAutomationPeer
 117                 internal AutomationPeer CreateAutomationPeer ()
 118                 {
 119                         return OnCreateAutomationPeer ();
 120                 }
 121
 122                 public Size DesiredSize {
 123                         get {
 124                                 return NativeMethods.uielement_get_desired_size (native);
 125                         }
 126                 }
 127
 128                 public Size RenderSize {
 129                         get {
 130                                 return NativeMethods.uielement_get_render_size (native);
 131                         }
 132                 }
 133
 134 #if NET_3_0
 135                 public event MouseButtonEventHandler MouseRightButtonDown {
 136                         add {
 137                                 RegisterEvent (EventIds.UIElement_MouseRightButtonDownEvent, value, Events.CreateMouseButtonEventHandlerDispatcher (value));
 138                         }
 139                         remove {
 140                                 UnregisterEvent (EventIds.UIElement_MouseRightButtonDownEvent, value);
 141                         }
 142                 }
 143
 144                 public event MouseButtonEventHandler MouseRightButtonUp {
 145                         add {
 146                                 RegisterEvent (EventIds.UIElement_MouseRightButtonUpEvent, value, Events.CreateMouseButtonEventHandlerDispatcher (value));
 147                         }
 148                         remove {
 149                                 UnregisterEvent (EventIds.UIElement_MouseRightButtonUpEvent, value);
 150                         }
 151                 }
 152 #endif
 153
 154                 public void AddHandler (RoutedEvent routedEvent,
 155                                         Delegate handler,
 156                                         bool handledEventsToo)
 157
 158                 {
 159                         // FIXME: we don't handle handledEventsToo
 160                         RegisterEvent (routedEvent.EventId, handler, Events.CreateDispatcherFromEventId (routedEvent.EventId, handler));
 161                 }
 162         }
 163 }