Method MouseMoveEvent

Views/Infovis/vtkGraphItem.cxx:362–404

}

bool vtkGraphItem::MouseMoveEvent(const vtkContextMouseEvent& event)
{
  this->Internal->LastMousePos = event.GetPos();
  if (event.GetButton() == vtkContextMouseEvent::NO_BUTTON)
  {
    vtkIdType v = this->HitVertex(event.GetPos());
    this->Scene->SetDirty(true);
    if (v < 0)
    {
      this->Tooltip->SetVisible(false);
      return true;
    }
    std::string text = this->VertexTooltip(v);
    if (text.empty())
    {
      this->Tooltip->SetVisible(false);
      return true;
    }
    this->PlaceTooltip(v);
    this->Tooltip->SetText(text);
    this->Tooltip->SetVisible(true);
    return true;
  }
  if (event.GetButton() == vtkContextMouseEvent::LEFT_BUTTON)
  {
    if (this->Layout->GetFixed() >= 0)
    {
      this->Layout->SetAlpha(this->Internal->LayoutAlphaStart);
      this->Graph->GetPoints()->SetPoint(
        this->Layout->GetFixed(), event.GetPos()[0], event.GetPos()[1], 0.0);
    }
    return true;
  }

  if (this->Tooltip->GetVisible())
  {
    vtkIdType v = this->HitVertex(event.GetPos());
    this->PlaceTooltip(v);
    this->Scene->SetDirty(true);
  }

  return false;
}

bool vtkGraphItem::MouseEnterEvent(const vtkContextMouseEvent& vtkNotUsed(event))
{