gc->Clip (wxRegion (time_x (position), y_pos (_track.get()), len.seconds() * _timeline.pixels_per_second().get_value_or(0), _timeline.pixels_per_track()));
gc->DrawText (lab, time_x (position) + 12, y_pos (_track.get() + 1) - lab_height - 4);
gc->Clip (wxRegion (time_x (position), y_pos (_track.get()), len.seconds() * _timeline.pixels_per_second().get_value_or(0), _timeline.pixels_per_track()));
gc->DrawText (lab, time_x (position) + 12, y_pos (_track.get() + 1) - lab_height - 4);