- static Real staff_space (Grob*) ;
- static int steps_i (Grob*) ;
- static int line_count (Grob*);
- DECLARE_SCHEME_CALLBACK (brew_molecule, (SCM ));
- static bool has_interface (Grob*);
- static void set_interface (Grob*);
+ static Real staff_space (Grob *);
+ static Real get_line_thickness (Grob *);
+ static Real get_ledger_line_thickness (Grob *);
+
+ static vector<Real> line_positions (Grob *);
+ static vector<Real> ledger_positions (Grob *me, int pos);
+ static int line_count (Grob *);
+ static bool on_line (Grob *me, int pos, bool allow_ledger = true);
+ static Interval line_span (Grob *);
+ DECLARE_SCHEME_CALLBACK (print, (SCM));
+ DECLARE_SCHEME_CALLBACK (height, (SCM));
+ DECLARE_GROB_INTERFACE ();