Method OnMergeLabels

Modules/SegmentationUI/src/QmitkMultiLabelInspector.cpp:1403–1443

}

void QmitkMultiLabelInspector::OnMergeLabels(bool /*value*/)
{
  auto currentLabel = GetCurrentLabel();
  QString question = "Do you really want to merge selected labels into \"" + QString::fromStdString(currentLabel->GetName())+"\"?";

  QMessageBox::StandardButton answerButton = QMessageBox::question(
    this, "Merge selected label", question, QMessageBox::Yes | QMessageBox::Cancel, QMessageBox::Yes);

  if (answerButton == QMessageBox::Yes)
  {
    this->WaitCursorOn();

    mitk::SegGroupModifyUndoRedoHelper undoRedoGenerator(m_Segmentation, { m_Segmentation->GetGroupIndexOfLabel(currentLabel->GetValue()) }, true);

    m_Segmentation->MergeLabels(currentLabel->GetValue(), this->GetSelectedLabels());

    // Propagate the source labels' provenance into the merge target so its algorithm type/name reflect
    // the (possibly algorithmic) content it now contains. Done before RegisterUndoRedoOperationEvent so
    // the property change is captured in the same undo group as the pixel merge.
    for (const auto sourceValue : this->GetSelectedLabels())
    {
      if (sourceValue == currentLabel->GetValue())
        continue;
      if (const mitk::Label* sourceLabel = m_Segmentation->GetLabel(sourceValue))
        currentLabel->MergeToolUses(sourceLabel);
    }

    undoRedoGenerator.RegisterUndoRedoOperationEvent("Merge into label \"" + mitk::LabelSetImageHelper::CreateDisplayLabelName(m_Segmentation, currentLabel) + "\"");

    this->WaitCursorOff();

    // this is needed as workaround for (T27307). It circumvents the fact that modifications
    // of data (here the segmentation) does not directly trigger the modification of the
    // owning node (see T27307). Therefore other code (like renderers or model views) that e.g.
    // listens to the datastorage for modification would not get notified.
    if (m_SegmentationNode.IsNotNull())
    {
      m_SegmentationNode->Modified();
    }
  }
}

void QmitkMultiLabelInspector::OnAddLabel()
{