/// <summary>
/// construct the presentation state with an event aggregator, to send/receive update events
/// </summary>
/// <param name="eventAggregator"></param>
public PresentationStateViewModel(IEventAggregator eventAggregator, IFrameUpdateManager fum)
{
_eventAggregator = eventAggregator;
_fum = fum;
// store the UI thread SynchronizationContext
_syncContext = SynchronizationContext.Current;
System.Diagnostics.Trace.Assert(_syncContext != null);
}
/// <summary>
/// constructs a new LayeredViewViewModel, and wires up the necessary events
/// </summary>
/// <param name="container">the unity container for resolving things</param>
/// <param name="eventAggregator">the event aggregator for sending/receiving</param>
/// <param name="repository">the model repository</param>
public LayeredViewViewModel(IUnityContainer container,
IEventAggregator eventAggregator,
IModelRepository repository)
{
_container = container;
_eventAggregator = eventAggregator;
_repository = repository;
// store the UI thread SynchronizationContext
_uiUpdateContext = SynchronizationContext.Current;
System.Diagnostics.Trace.Assert(_uiUpdateContext != null);
// create a new PresentationState view model and add to the active layer
PresentationState = _container.Resolve <PresentationStateViewModel>();
ActiveLayer.Add(PresentationState);
// subscribe to events
_eventAggregator.GetEvent <NavigationPointUpdateEvent>()
.Subscribe(OnNavigationPointUpdated, ThreadOption.UIThread);
_eventAggregator.GetEvent <ImageDataLoadedEvent>()
.Subscribe(OnImageDataLoadedEvent, ThreadOption.UIThread);
_eventAggregator.GetEvent <VolumeUpdatedEvent>()
.Subscribe(OnVolumeUpdatedEvent, ThreadOption.UIThread);
_eventAggregator.GetEvent <SetIsocurveLevelEvent>()
.Subscribe(OnSetIsocurveLevel, ThreadOption.UIThread);
// set up the performance counters
FrameRatePerformance = new PerformanceCounter("FrameRate", _uiUpdateContext);
BackgroundLayerPerformance = new PerformanceCounter("BackLayer", _uiUpdateContext);
PassiveLayerPerformance = new PerformanceCounter("PassLayer", _uiUpdateContext);
_renderUpdateManager = _container.Resolve <IFrameUpdateManager>();
if (_renderUpdateManager.UiUpdatePerformance == null)
{
_renderUpdateManager.UiUpdatePerformance = new PerformanceCounter("UIUpdate", _uiUpdateContext);
}
UiUpdatePerformance = _renderUpdateManager.UiUpdatePerformance;
}
