Method dropEvent

bt_editor/editor_flowscene.cpp:113–136

void EditorFlowScene::dropEvent(QGraphicsSceneDragDropEvent *event)
{
    if(!_editor_locked && event->mimeData()->hasFormat("application/x-qabstractitemmodeldatalist")  )
    {
        QByteArray encoded = event->mimeData()->data("application/x-qabstractitemmodeldatalist");
        QDataStream stream(&encoded, QIODevice::ReadOnly);
        QPointF scene_pos = event->scenePos();

        while (!stream.atEnd())
        {
            int row, col;
            QMap<int,  QVariant> roleDataMap;
            stream >> row >> col >> roleDataMap;

            auto it = roleDataMap.find(0);
            if (it != roleDataMap.end() )
            {
                const auto& ID = it.value().toString();
                createNodeAtPos( ID, ID, scene_pos);
            }
        }
    }
    event->acceptProposedAction();
}