Method SetEnabled

Modules/Core/src/Rendering/mitkVtkEventProvider.cpp:80–129

}

void mitk::vtkEventProvider::SetEnabled(int enabling)
{
  if (!this->Interactor)
  {
    VTKEVENTPROVIDER_ERROR << "The interactor must be set prior to enabling/disabling widget";
    return;
  }

  if (enabling) //----------------------------------------------------------
  {
    VTKEVENTPROVIDER_DEBUG << "Enabling widget";

    if (this->Enabled) // already enabled, just return
    {
      return;
    }

    this->Enabled = 1;

    // listen to all event types specified in m_InteractionEventsVector
    vtkRenderWindowInteractor *i = this->Interactor;

    InteractionEventsVectorType::iterator it;
    for (it = m_InteractionEventsVector.begin(); it != m_InteractionEventsVector.end(); ++it)
    {
      // add observer to interactorStyle
      i->GetInteractorStyle()->AddObserver((vtkCommand::EventIds)(*it), this->EventCallbackCommand, this->Priority);
    }

    this->InvokeEvent(vtkCommand::EnableEvent, nullptr);
  }

  else // disabling-----------------------------------------------------------
  {
    VTKEVENTPROVIDER_DEBUG << "Disabling widget";

    if (!this->Enabled) // already disabled, just return
    {
      return;
    }

    this->Enabled = 0;

    // don't listen for events any more
    this->Interactor->RemoveObserver(this->EventCallbackCommand);
    // this->Interactor->HandleEventLoop = 0;

    this->InvokeEvent(vtkCommand::DisableEvent, nullptr);
  }
}

//----------------------------------------------------------------------------
// This adds the keypress event observer and the delete event observer