Method OnLabelAdded

Modules/SegmentationUI/src/QmitkMultiLabelTreeModel.cpp:933–984

}

void QmitkMultiLabelTreeModel::OnLabelAdded(LabelValueType labelValue)
{
  GroupIndexType groupIndex = m_Segmentation->GetGroupIndexOfLabel(labelValue);
  auto label = m_Segmentation->GetLabel(labelValue);
  if (label.IsNull()) mitkThrow() << "Invalid internal state. Segmentation signaled the addition of a label that does not exist in the segmentation. Invalid label value:" << labelValue;
  if (labelValue == mitk::MultiLabelSegmentation::UNLABELED_VALUE) return;

  auto groupItem = GetGroupItem(groupIndex, this->m_RootItem.get());

  bool newLabelCreated = false;
  auto instanceItem = AddLabelToGroupTree(label, groupItem, newLabelCreated);
  m_NearestLabelValueToLastChange = labelValue;

  m_ModelUpdateOngoing = true;
  if (newLabelCreated)
  {
    if (groupItem->m_childItems.size() == 1)
    { //first label added
      auto groupIndex = GetIndexByItem(groupItem, this);
      emit dataChanged(groupIndex, groupIndex);
      this->beginInsertRows(groupIndex, instanceItem->ParentItem()->Row(), instanceItem->ParentItem()->Row());
      this->endInsertRows();
    }
    else
    { //whole new label level added to group item
      auto groupIndex = GetIndexByItem(groupItem, this);
      this->beginInsertRows(groupIndex, instanceItem->ParentItem()->Row(), instanceItem->ParentItem()->Row());
      this->endInsertRows();
    }
  }
  else
  {
    if (instanceItem->ParentItem()->m_childItems.size() < 3)
    { //second instance item was added, so label item will now able to collapse
      // -> the whole label node has to be updated.
      auto labelIndex = GetIndexByItem(instanceItem->ParentItem(), this);
      emit dataChanged(labelIndex, labelIndex);
      this->beginInsertRows(labelIndex, 0, instanceItem->ParentItem()->m_childItems.size()-1);
      this->endInsertRows();
    }
    else
    {
      // instance item was added to existing label item with multiple instances
      //-> just notify the row insertion
      auto labelIndex = GetIndexByItem(instanceItem->ParentItem(), this);
      this->beginInsertRows(labelIndex, instanceItem->Row(), instanceItem->Row());
      this->endInsertRows();
    }
  }
  m_ModelUpdateOngoing = false;
  emit modelChanged();
}

void QmitkMultiLabelTreeModel::OnLabelModified(LabelValueType labelValue)
{