class/System.Windows/System.Windows.Interop/Content.cs

   1 //
   2 // Content.cs
   3 //
   4 // Contact:
   5 //   Moonlight List (moonlight-list@lists.ximian.com)
   6 //
   7 // Copyright 2008 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 Mono;
  30 using System;
  31
  32 namespace System.Windows.Interop {
  33
  34         public sealed class Content {
  35
  36                 public Content ()
  37                 {
  38                 }
  39
  40                 public double ActualHeight {
  41                         get {
  42                                 if (PluginHost.Handle != IntPtr.Zero) {
  43                                         int n = NativeMethods.plugin_instance_get_actual_height (PluginHost.Handle);
  44                                         return n >= 0 ? n : 0;
  45                                 } else
  46                                         return 768;
  47                         }
  48                 }
  49
  50                 public double ActualWidth {
  51                         get {
  52                                 if (PluginHost.Handle != IntPtr.Zero) {
  53                                         int n = NativeMethods.plugin_instance_get_actual_width (PluginHost.Handle);
  54                                         return n >= 0 ? n : 0;
  55                                 } else
  56                                         return 1024;
  57                         }
  58                 }
  59
  60                 public bool IsFullScreen {
  61                         get {
  62                                 return NativeMethods.surface_get_full_screen (Deployment.Current.Surface.Native);
  63                         }
  64                         set {
  65                                 NativeMethods.surface_set_full_screen (Deployment.Current.Surface.Native, value);
  66                         }
  67                 }
  68
  69                 public double ZoomFactor {
  70                         get {
  71                                 return NativeMethods.surface_get_zoom_factor (Deployment.Current.Surface.Native);
  72                         }
  73                 }
  74
  75                 static EventHandlerList EventList = new EventHandlerList ();
  76
  77                 public event EventHandler FullScreenChanged {
  78                         add {
  79                                 RegisterEvent (EventIds.Surface_FullScreenChangeEvent, value, Events.CreateNullSenderEventHandlerDispatcher (value));
  80                         }
  81                         remove {
  82                                 UnregisterEvent (EventIds.Surface_FullScreenChangeEvent, value);
  83                         }
  84                 }
  85
  86                 public event EventHandler Resized {
  87                         add {
  88                                 RegisterEvent (EventIds.Surface_ResizeEvent, value, Events.CreateNullSenderEventHandlerDispatcher (value));
  89                         }
  90                         remove {
  91                                 UnregisterEvent (EventIds.Surface_ResizeEvent, value);
  92                         }
  93                 }
  94
  95                 public event EventHandler Zoomed {
  96                         add {
  97                                 RegisterEvent (EventIds.Surface_ZoomedEvent, value, Events.CreateNullSenderEventHandlerDispatcher (value));
  98                         }
  99                         remove {
 100                                 UnregisterEvent (EventIds.Surface_ZoomedEvent, value);
 101                         }
 102                 }
 103
 104                 private void RegisterEvent (int eventId, Delegate managedHandler, UnmanagedEventHandler nativeHandler)
 105                 {
 106                         if (managedHandler == null)
 107                                 return;
 108
 109                         int token = Events.AddHandler (Deployment.Current.Surface.Native, eventId, nativeHandler);
 110                         EventList.AddHandler (eventId, token, managedHandler, nativeHandler);
 111                 }
 112
 113                 private void UnregisterEvent (int eventId, Delegate managedHandler)
 114                 {
 115                         UnmanagedEventHandler nativeHandler = EventList.RemoveHandler (eventId, managedHandler);
 116
 117                         if (nativeHandler == null)
 118                                 return;
 119
 120                         Events.RemoveHandler (Deployment.Current.Surface.Native, eventId, nativeHandler);
 121                 }
 122         }
 123 }