private void SystemShutdownHandler(bool isClosed)
{
try
{
MsPlayer.CloseDevice();
}
catch { }
try
{
syncVideoPlayState(false);
_player.Stop();
}
catch { }
try
{
PPTViewer.Close();
}
catch { }
try
{
_desktopWindowCollector.PushingData -= _desktopWindowCollector_PushingData;
}
catch { }
try
{
_desktopWindowCollector.Dispose();
}
catch { }
}
private void UserControl_Loaded(object sender, RoutedEventArgs e)
{
var vm = this.DataContext as SpeechViewModel;
if (vm != null)
{
PPTViewer.SetEventAggregator(vm.EventAggregator);
_eventSubscriptionManager = vm.EventSubscriptionManager;
_desktopWindowCollector = vm.DesktopWindowCollector;
_setupVideoLiveAndRecordingDevices = vm.SetupVideoLiveAndRecordingDevices;
_switchDemonstrationSceneEventSubscriptionToken = _eventSubscriptionManager.Subscribe <SwitchDemonstrationSceneEvent, SwitchDemonstrationSceneContext>(null, SwitchDemonstrationSceneEventHandler, null);
_systemCloseEventSubscriptionToken = _eventSubscriptionManager.Subscribe <ShutDownEvent, bool>(null, SystemShutdownHandler, null);
_pptClosedEventSubscriptionToken = _eventSubscriptionManager.Subscribe <PPTClosedEvent, bool>(null, PPTClosedEventHandler, null);
_eventSubscriptionManager.Subscribe <SelectedDemonstrationWindowEvent, PreviewWindowInfo>(null, SwitchPreviewWindowSceneHandler, null);
_eventSubscriptionManager.Subscribe <PlayVolumeChangeEvent, int>(null, (volume) =>
{
_player.Volume = (double)volume / 100;
}, null);
}
DefaultScene.Visibility = Visibility.Visible;
_desktopWindowCollector.SetWindowHandle(DefaultScene.Handle);
_setupVideoLiveAndRecordingDevices?.SetVideoDevice(_desktopWindowCollector);
}
private void SwitchDemonstrationSceneEventHandler(SwitchDemonstrationSceneContext context)
{
_desktopWindowCollector.PushingData -= _desktopWindowCollector_PushingData;
switch (context.SceneType)
{
case DemonstratioType.PPT:
AllSceneHidden();
_player.Pause();
PPTViewer.OpenPPT(context.UseDevice.ToString());
DemonstrationPPTScene.Visibility = Visibility;
_desktopWindowCollector.SetWindowHandle(DemonstrationPPTScene.Handle);
break;
case DemonstratioType.VideoDevice:
AllSceneHidden();
_player.Pause();
DemonstrationVideoDeviceScene.Visibility = Visibility.Visible;
MsPlayer.OpenDevice(context.UseDevice as IVideoDevice);
_desktopWindowCollector.SetWindowHandle(DemonstrationVideoDeviceScene.Handle);
break;
case DemonstratioType.Image:
_player.Pause();
AllSceneHidden();
if (_imagePath != context.UseDevice.ToString())
{
_imagePath = context.UseDevice.ToString();
BitmapImage bitmap = new BitmapImage(new Uri(_imagePath));
ImageControl.ImageSource = bitmap;
}
DefaultScene.Visibility = Visibility.Visible;
_desktopWindowCollector.SetWindowHandle(DefaultScene.Handle);
break;
case DemonstratioType.Video:
if (context.UseDevice.ToString() != _videoPath)
{
_videoPath = context.UseDevice.ToString();
AllSceneHidden();
_player.Open(new Uri(_videoPath));
}
_player.Play();
DemonstrationVideoScene.Visibility = Visibility.Visible;
_desktopWindowCollector.SetWindowHandle(DemonstrationVideoScene.Handle);
break;
default:
AllSceneHidden();
DefaultScene.Visibility = Visibility.Visible;
_desktopWindowCollector.SetWindowHandle(DefaultScene.Handle);
break;
}
}
