Gtk::Table edit_packer;
Gtk::Adjustment vertical_adjustment;
- double _horizontal_position;
Gtk::Layout controls_layout;
bool control_layout_scroll (GdkEventScroll* ev);
double last_trackview_group_vertical_offset;
void tie_vertical_scrolling ();
void set_horizontal_position (double);
+ double horizontal_position () const;
void scroll_canvas_vertically ();
struct VisualChange {