Method dropMimeData

Modules/QtWidgets/src/QmitkRenderWindowDataNodeTableModel.cpp:349–387

}

bool QmitkRenderWindowDataNodeTableModel::dropMimeData(const QMimeData* data, Qt::DropAction action, int /*row*/, int /*column*/, const QModelIndex& parent)
{
  if (action == Qt::IgnoreAction)
  {
    return true;
  }

  if (!data->hasFormat(QmitkMimeTypes::DataNodePtrs))
  {
    return false;
  }

  if (parent.isValid())
  {
    int layer = -1;
    auto targetNode = this->data(parent, QmitkDataNodeRawPointerRole).value<mitk::DataNode*>();
    auto movedNodes = QmitkMimeTypes::ToDataNodePtrList(data);

    // In the table model, each column has its own entry. To avoid duplicate moving, filter out unique nodes.
    QSet<mitk::DataNode*> uniqueMovedNodes;
    for (const auto& dataNode : std::as_const(movedNodes))
    {
      uniqueMovedNodes.insert(dataNode);
    }

    auto baseRenderer = m_BaseRenderer.Lock();
    if (nullptr != targetNode)
    {
      targetNode->GetIntProperty("layer", layer, baseRenderer);
    }

    this->moveNodesLayer(uniqueMovedNodes, layer);
    emit NodesLayerMoved(uniqueMovedNodes, layer);

    return true;
  }

  return false;
}