Method OnClick

Modules/Segmentation/src/Interactions/mitkFillRegionBaseTool.cpp:94–157

}

void mitk::FillRegionBaseTool::OnClick(StateMachineAction*, InteractionEvent* interactionEvent)
{
  auto positionEvent = dynamic_cast<mitk::InteractionPositionEvent*>(interactionEvent);
  if (nullptr == positionEvent)
    return;

  auto labelSetImage = this->GetWorkingData();
  if (nullptr == labelSetImage)
  {
    return;
  }

  if (!IsPositionEventInsideImageRegion(positionEvent, labelSetImage))
  {
    return;
  }

  m_LastEventSender = positionEvent->GetSender();
  m_LastEventSlice = m_LastEventSender->GetSlice();

  auto workingSlice = this->GetAffectedWorkingSlice(positionEvent);

  auto click = positionEvent->GetPositionInWorld();

  m_SeedLabelValue = 0;
  auto fillImage = this->GenerateFillImage(workingSlice, click, m_SeedLabelValue);

  if (fillImage.IsNull())
  {
    return; //nothing to fill;
  }

  auto activeLabel = labelSetImage->GetActiveLabel();
  if (labelSetImage->IsLabelLocked(m_SeedLabelValue) && (nullptr == activeLabel || m_SeedLabelValue != activeLabel->GetValue()))
  {
    ErrorMessage.Send("Label of selected region is locked. Tool operation has no effect.");
    return;
  }

  this->PrepareFilling(workingSlice, click);

  auto relevantLabelValues = labelSetImage->GetLabelValuesByGroup(labelSetImage->GetActiveLayer());

  //as fill region tools should always allow to manipulate active label
  //(that is what the user expects/knows when using tools so far:
  //the active label can always be changed even if locked)
  //we realize that by cloning the relevant label set and changing the lock state
  //this fillLabelSet is used for the transfer.
  auto activeLabelClone = labelSetImage->GetActiveLabel()->Clone();
  if (nullptr != activeLabelClone)
  {
    activeLabelClone->SetLocked(false);
  }

  relevantLabelValues.erase(std::remove(relevantLabelValues.begin(), relevantLabelValues.end(), activeLabelClone->GetValue()));
  auto relevantLabels = labelSetImage->GetConstLabelsByValue(relevantLabelValues);
  relevantLabels.push_back(activeLabelClone);