Gets vertical skylines from grob stencils

lily/include/system.hh

 /*
   This file is part of LilyPond, the GNU music typesetter.
 
   Copyright (C) 1996--2012 Han-Wen Nienhuys
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
 
@@ skipping 21 matching lines @@
 class System : public Spanner
 {
   int rank_;
   Grob_array *all_elements_;
   void init_elements ();
   friend class Paper_score;     // ugh.
   Paper_score *pscore_; // ugh.
 
 public:
   Paper_score *paper_score () const;
-  Grob *get_vertical_alignment ();
   Grob *get_extremal_staff (Direction dir, Interval const &);
   Grob *get_neighboring_staff (Direction dir, Grob *vertical_axis_group, Interval_t<int> bounds);
   Grob *get_pure_bound (Direction dir, int start, int end);
   Grob *get_maybe_pure_bound (Direction dir, bool pure, int start, int end);
   int get_rank () const;
   vector<Real> get_footnote_heights_in_range (vsize st, vsize end);
   vector<Real> get_in_note_heights_in_range (vsize st, vsize end);
   vector<Real> internal_get_note_heights_in_range (vsize st, vsize end, bool foot);
   vector<Grob *> get_footnote_grobs_in_range (vsize st, vsize end);
   vsize num_footnotes ();
   void do_break_substitution_and_fixup_refpoints ();
   void post_processing ();
   SCM get_paper_system ();
   SCM get_paper_systems ();
   SCM get_broken_system_grobs ();
   SCM get_broken_footnote_stencils ();
 
   DECLARE_SCHEME_CALLBACK (footnotes_before_line_breaking, (SCM));
   DECLARE_SCHEME_CALLBACK (footnotes_after_line_breaking, (SCM));
+  DECLARE_SCHEME_CALLBACK (vertical_skyline_elements, (SCM));
   DECLARE_SCHEME_CALLBACK (calc_pure_relevant_grobs, (SCM));
   DECLARE_SCHEME_CALLBACK (height, (SCM));
   DECLARE_SCHEME_CALLBACK (calc_pure_height, (SCM, SCM, SCM));
   DECLARE_SCHEME_CALLBACK (get_staves, (SCM));
   DECLARE_SCHEME_CALLBACK (get_spaceable_staves, (SCM));
   DECLARE_SCHEME_CALLBACK (get_nonspaceable_staves, (SCM));
+  DECLARE_SCHEME_CALLBACK (get_vertical_alignment, (SCM));
 
   System (SCM);
   System (System const &);
 
   int element_count () const;
   int spanner_count () const;
 
   void break_into_pieces (vector<Column_x_positions> const &);
   DECLARE_GROB_INTERFACE ();
 
@@ skipping 15 matching lines @@
   virtual Grob *clone () const;
 
 private:
   Interval part_of_line_pure_height (vsize start, vsize end, bool begin);
 };
 
 void set_loose_columns (System *which, Column_x_positions const *posns);
 
 #endif /* SYSTEM_HH */