+ void recreate_views ();
+ void setup_scrollbars ();
+ void scrolled (wxScrollWinEvent& ev);
+ void set_pixels_per_second (double pps);
+ void set_pixels_per_track (int h);
+ void zoom_all ();
+ void update_playhead ();
+
+ std::shared_ptr<TimelineView> event_to_view (wxMouseEvent &);