Hack for vtkSliderWidget with multiple handles

slider.py

import pyvista as pv
import vtk


def foo(bar):
    pass


def disable_tube(slider):
    tr = slider.GetEventTranslator()
    tr.ClearEvents()
    tr.SetTranslation(vtk.vtkCommand.LeftButtonPressEvent,
                      vtk.vtkWidgetEvent.Select)
    tr.SetTranslation(vtk.vtkCommand.LeftButtonReleaseEvent,
                      vtk.vtkWidgetEvent.EndSelect)
    tr.SetTranslation(vtk.vtkCommand.MouseMoveEvent,
                      vtk.vtkWidgetEvent.Move)
    slider.SetAnimationModeToOff()


rng = [0, 1]

p = pv.Plotter()

a = p.add_slider_widget(foo, rng)
disable_tube(a)
a = a.GetRepresentation()
a.SetValue(0.25)
a.GetSliderProperty().SetColor(1, 0, 0)

b = p.add_slider_widget(foo, rng)
disable_tube(b)
b = b.GetRepresentation()
b.SetValue(0.5)
b.GetSliderProperty().SetColor(0, 1, 0)
b.GetTubeProperty().SetOpacity(0.0)

c = p.add_slider_widget(foo, rng)
disable_tube(c)
c = c.GetRepresentation()
c.SetValue(0.75)
c.GetSliderProperty().SetColor(0, 0, 1)
c.GetTubeProperty().SetOpacity(0.0)

p.show()