Caches the interior skylines of vertical axis groups and systems.

lily/trill-spanner-engraver.cc

 /*
   This file is part of LilyPond, the GNU music typesetter.
 
   Copyright (C) 2000--2012 Jan Nieuwenhuizen <janneke@gnu.org>
 
   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 10 matching lines @@
   C&P from text-spanner.cc
 
   - todo: ending should be detected automatically? a new note
   automatically is the end of the trill?
 */
 
 #include "engraver.hh"
 
 #include "international.hh"
 #include "note-column.hh"
+#include "outside-staff-interface.hh"
 #include "pointer-group-interface.hh"
 #include "side-position-interface.hh"
 #include "stream-event.hh"
 #include "spanner.hh"
 
 #include "translator.icc"
 
 class Trill_spanner_engraver : public Engraver
 {
 public:
@@ skipping 63 matching lines @@
       announce_end_grob (finished_, ender->self_scm ());
       span_ = 0;
       current_event_ = 0;
     }
 
   if (event_drul_[START])
     {
       current_event_ = event_drul_[START];
       span_ = make_spanner ("TrillSpanner", event_drul_[START]->self_scm ());
       Side_position_interface::set_axis (span_, Y_AXIS);
+      Outside_staff_interface::chain_y_offset_callback (span_);
     }
 }
 
 void
 Trill_spanner_engraver::typeset_all ()
 {
   if (finished_)
     {
       if (!finished_->get_bound (RIGHT))
         {
@@ skipping 37 matching lines @@
                 /* create */
                 "TrillSpanner ",
 
                 /* read */
                 "currentCommandColumn "
                 "currentMusicalColumn ",
 
                 /* write */
                 ""
                );