Method ProcessEvents

Rendering/UI/vtkXRenderWindowInteractor.cxx:228–281

}

void vtkXRenderWindowInteractor::ProcessEvents()
{
  auto& internals = (*this->Internal);
  auto& done = internals.LoopDone;

  std::map<Window, vtkXRenderWindowInteractor*> windowmap;
  std::set<Display*> dpys;
  // Make a copy of Instances, the original set might change during loop
  std::vector<vtkXRenderWindowInteractor*> instances(
    vtkXRenderWindowInteractorInternals::Instances.begin(),
    vtkXRenderWindowInteractorInternals::Instances.end());
  for (auto rwi : instances)
  {
    if (rwi->RenderWindow->GetGenericDisplayId() == nullptr)
    {
      // The window has closed the display connection
      rwi->Finalize();
      continue;
    }
    windowmap.insert({ rwi->WindowId, rwi });
    dpys.insert(rwi->DisplayId);
  }

  for (Display* dpy : dpys)
  {
    XEvent event;
    while (this->CheckDisplayId(dpy) && vtkXPending(dpy) != 0)
    {
      // If events are pending, dispatch them to the right RenderWindowInteractor
      vtkXNextEvent(dpy, &event);
      Window w = event.xany.window;
      auto iter = windowmap.find(w);
      if (iter != windowmap.end() && !iter->second->Done)
      {
        iter->second->DispatchEvent(&event);
        iter->second->FireTimers();
      }
    }
  }

  // Set event loop to terminate if there were no displays to check for events
  done = dpys.empty();

  for (auto rwi : vtkXRenderWindowInteractorInternals::Instances)
  {
    if (!rwi->Done)
    {
      rwi->FireTimers();
    }
    // Set event loop to terminate if SetDone(true) or TerminateApp() was
    // called on any of the interactors
    done = done || rwi->Done;
  }
}

//------------------------------------------------------------------------------
void vtkXRenderWindowInteractor::WaitForEvents()