Method OnChar

Interaction/Style/vtkInteractorStyleImage.cxx:380–443

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//------------------------------------------------------------------------------
void vtkInteractorStyleImage::OnChar()
{
  vtkRenderWindowInteractor* rwi = this->Interactor;
  char* cKeySym = rwi->GetKeySym();
  std::string keySym = cKeySym != nullptr ? cKeySym : "";
  std::transform(keySym.begin(), keySym.end(), keySym.begin(), ::toupper);
  if (keySym == "F")
  {
    this->AnimState = VTKIS_ANIM_ON;
    vtkAssemblyPath* path = nullptr;
    this->FindPokedRenderer(rwi->GetEventPosition()[0], rwi->GetEventPosition()[1]);
    rwi->GetPicker()->Pick(
      rwi->GetEventPosition()[0], rwi->GetEventPosition()[1], 0.0, this->CurrentRenderer);
    vtkAbstractPropPicker* picker;
    if ((picker = vtkAbstractPropPicker::SafeDownCast(rwi->GetPicker())))
    {
      path = picker->GetPath();
    }
    if (path != nullptr)
    {
      rwi->FlyToImage(this->CurrentRenderer, picker->GetPickPosition());
    }
    this->AnimState = VTKIS_ANIM_OFF;
  }
  else if (keySym == "R")
  {
    // Allow either shift/ctrl to trigger the usual 'r' binding
    // otherwise trigger reset window level event
    if (rwi->GetShiftKey() || rwi->GetControlKey())
    {
      this->Superclass::OnChar();
    }
    else if (this->HandleObservers && this->HasObserver(vtkCommand::ResetWindowLevelEvent))
    {
      this->InvokeEvent(vtkCommand::ResetWindowLevelEvent, this);
    }
    else if (this->CurrentImageProperty)
    {
      vtkImageProperty* property = this->CurrentImageProperty;
      property->SetColorWindow(this->WindowLevelInitial[0]);
      property->SetColorLevel(this->WindowLevelInitial[1]);
      this->Interactor->Render();
    }
  }
  else if (keySym == "X")
  {
    this->SetImageOrientation(this->XViewRightVector, this->XViewUpVector);
    this->Interactor->Render();
  }
  else if (keySym == "Y")
  {
    this->SetImageOrientation(this->YViewRightVector, this->YViewUpVector);
    this->Interactor->Render();
  }
  else if (keySym == "Z")
  {
    this->SetImageOrientation(this->ZViewRightVector, this->ZViewUpVector);
    this->Interactor->Render();