Method MoveNodeToBack

Modules/QtWidgets/src/mitkRenderWindowLayerController.cpp:181–227

}

bool mitk::RenderWindowLayerController::MoveNodeToBack(DataNode* dataNode, const BaseRenderer* renderer /*= nullptr*/)
{
  if (nullptr == dataNode)
  {
    return false;
  }

  // get the layer stack of the current renderer
  RenderWindowLayerUtilities::LayerStack stackedLayers = RenderWindowLayerUtilities::GetLayerStack(m_DataStorage, renderer);
  if (!stackedLayers.empty())
  {
    // get the last value (lowest int-key)
    int lowermostLayer = stackedLayers.rbegin()->first;
    // get the current layer value of the given data node
    int currentLayer;
    bool wasFound = dataNode->GetIntProperty("layer", currentLayer, renderer);
    if (wasFound && currentLayer > lowermostLayer)
    {
      // move the current data node to the current lowermost layer
      dataNode->SetIntProperty("layer", lowermostLayer, renderer);
      // move all other data nodes one layer up
      for (auto& layer : stackedLayers)
      {
        if (layer.second != dataNode && layer.first < currentLayer)
        {
          layer.second->SetIntProperty("layer", layer.first + 1, renderer);
        }
        // else: current data node is the selected data node or
        // was previously already above the selected data node
      }
      dataNode->Modified();
      if (nullptr == renderer)
      {
        mitk::RenderingManager::GetInstance()->RequestUpdateAll();

      }
      else
      {
        mitk::RenderingManager::GetInstance()->RequestUpdate(renderer->GetRenderWindow());
      }
      return true;
    }
    // else: data node has no layer information or is already the lowermost layer node
  }
  // else: do not work with empty layer stack
  return false;
}

bool mitk::RenderWindowLayerController::MoveNodeUp(DataNode* dataNode, const BaseRenderer* renderer /*= nullptr*/)
{