Method MouseButtonPressEvent

Charts/Core/vtkChartXY.cxx:2042–2100

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
bool vtkChartXY::MouseButtonPressEvent(const vtkContextMouseEvent& mouse)
{
  if (this->Tooltip)
  {
    this->Tooltip->SetVisible(false);
  }

  // Iterate through each corner, and check for a nearby point
  for (size_t i = 0; i < this->ChartPrivate->PlotCorners.size(); ++i)
  {
    if (this->ChartPrivate->PlotCorners[i]->MouseButtonPressEvent(mouse))
    {
      return true;
    }
  }
  if (mouse.GetButton() == this->Actions.Pan())
  {
    // The mouse panning action.
    this->MouseBox.Set(mouse.GetPos().GetX(), mouse.GetPos().GetY(), 0.0, 0.0);
    this->DrawBox = false;
    return true;
  }
  else if (mouse.GetButton() == this->Actions.Zoom() || mouse.GetButton() == this->Actions.Select())
  {
    // Selection, for now at least...
    this->MouseBox.Set(mouse.GetPos().GetX(), mouse.GetPos().GetY(), 0.0, 0.0);
    this->DrawBox = true;
    return true;
  }
  else if (mouse.GetButton() == this->Actions.ZoomAxis())
  {
    this->MouseBox.Set(mouse.GetPos().GetX(), mouse.GetPos().GetY(), 0.0, 0.0);
    this->DrawBox = false;
    return true;
  }
  else if (mouse.GetButton() == this->Actions.SelectPolygon())
  {
    this->SelectionPolygon.Clear();
    this->SelectionPolygon.AddPoint(mouse.GetPos());
    this->DrawSelectionPolygon = true;
    return true;
  }
  else if (mouse.GetButton() == this->Actions.ClickAndDrag())
  {
    this->ReleasePlotSelections();
    this->DragPoint = this->LocatePointInPlots(mouse, vtkCommand::SelectionChangedEvent);
    this->InvokeEvent(vtkCommand::SelectionChangedEvent);
    return true;
  }
  else if (mouse.GetButton() == this->ActionsClick.Select() ||
    mouse.GetButton() == this->ActionsClick.Notify())
  {
    return true;
  }
  else
  {
    return false;
  }