Method GetHoverStringInternal

Views/Infovis/vtkRenderedGraphRepresentation.cxx:1375–1399

}

std::string vtkRenderedGraphRepresentation::GetHoverStringInternal(vtkSelection* sel)
{
  vtkGraph* input = vtkGraph::SafeDownCast(this->GetInput());
  vtkSmartPointer<vtkIdTypeArray> selectedItems = vtkSmartPointer<vtkIdTypeArray>::New();
  vtkConvertSelection::GetSelectedVertices(sel, input, selectedItems);
  vtkDataSetAttributes* data = input->GetVertexData();
  const char* hoverArrName = this->GetVertexHoverArrayName();
  if (selectedItems->GetNumberOfTuples() == 0)
  {
    vtkConvertSelection::GetSelectedEdges(sel, input, selectedItems);
    data = input->GetEdgeData();
    hoverArrName = this->GetEdgeHoverArrayName();
  }
  if (selectedItems->GetNumberOfTuples() == 0 || !hoverArrName)
  {
    return "";
  }
  vtkAbstractArray* arr = data->GetAbstractArray(hoverArrName);
  if (!arr)
  {
    return "";
  }
  vtkIdType item = selectedItems->GetValue(0);
  return arr->GetVariantValue(item).ToString();
}

void vtkRenderedGraphRepresentation::PrintSelf(ostream& os, vtkIndent indent)
{