public override void BeforeClose()
{
if (cameraLoaded)
{
UnloadCamera();
}
if (pipelineManager != null)
{
// Destroy resources (symmetric to constructor).
pipelineManager.FrameSignaled -= pipelineManager_FrameSignaled;
pipelineManager = null;
}
consumerDisplay = null;
nonGrabbingInteractionTimer.Stop();
nonGrabbingInteractionTimer.Tick -= NonGrabbingInteractionTimer_Tick;
grabTimer.Stop();
grabTimer.Tick -= grabTimer_Tick;
viewportController.DisplayRectangleUpdated -= ViewportController_DisplayRectangleUpdated;
if (view != null)
{
view.DualCommandReceived -= OnDualCommandReceived;
view.BeforeClose();
view = null;
}
}
public CaptureScreen()
{
// There are several nested lifetimes with symetric setup/teardown methods:
// Screen -> ctor / BeforeClose.
// Camera association -> LoadCamera / UnloadCamera.
// Connection (frame grab) -> Connect / Disconnect.
// Recording -> StartRecord / StopRecord.
log.Debug("Constructing a CaptureScreen.");
view = new CaptureScreenView(this);
view.DualCommandReceived += OnDualCommandReceived;
viewportController = new ViewportController();
viewportController.DisplayRectangleUpdated += ViewportController_DisplayRectangleUpdated;
viewportController.Poked += viewportController_Poked;
view.SetViewport(viewportController.View);
view.SetCapturedFilesView(capturedFiles.View);
InitializeCaptureFilenames();
InitializeTools();
InitializeMetadata();
delayCompositer = new DelayCompositer(delayer);
delayCompositeConfiguration = PreferencesManager.CapturePreferences.DelayCompositeConfiguration;
delayComposite = GetComposite(delayCompositeConfiguration);
delayCompositer.SetComposite(delayComposite);
view.SetToolbarView(drawingToolbarPresenter.View);
IntPtr forceHandleCreation = dummy.Handle; // Needed to show that the main thread "owns" this Control.
nonGrabbingInteractionTimer.Interval = 40;
nonGrabbingInteractionTimer.Tick += NonGrabbingInteractionTimer_Tick;
grabTimer.Tick += grabTimer_Tick;
pipelineManager.FrameSignaled += pipelineManager_FrameSignaled;
}