lily/hara-kiri-engraver.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2005--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "axis-group-engraver.hh"
  21 #include "hara-kiri-group-spanner.hh"
  22 #include "rhythmic-head.hh"
  23 #include "spanner.hh"
  24
  25 #include "translator.icc"
  26
  27 /*
  28   TODO: fold together with axis_group_engraver?
  29  */
  30
  31 class Hara_kiri_engraver : public Axis_group_engraver
  32 {
  33 protected:
  34   virtual Spanner *get_spanner ();
  35   DECLARE_ACKNOWLEDGER (grob);
  36   virtual void add_element (Grob *e);
  37   void process_music ();
  38   virtual void derived_mark () const;
  39   SCM interesting_;
  40 public:
  41   TRANSLATOR_DECLARATIONS (Hara_kiri_engraver);
  42 };
  43
  44
  45 Hara_kiri_engraver::Hara_kiri_engraver ()
  46 {
  47   interesting_ = SCM_EOL;
  48 }
  49
  50 void
  51 Hara_kiri_engraver::derived_mark () const
  52 {
  53   scm_gc_mark (interesting_);
  54 }
  55
  56 void
  57 Hara_kiri_engraver::process_music ()
  58 {
  59   Axis_group_engraver::process_music ();
  60   interesting_ = get_property ("keepAliveInterfaces");
  61 }
  62
  63 void
  64 Hara_kiri_engraver::add_element (Grob *e)
  65 {
  66   Axis_group_engraver::add_element (e);
  67 }
  68
  69 Spanner *
  70 Hara_kiri_engraver::get_spanner ()
  71 {
  72   Spanner *sp = make_spanner ("VerticalAxisGroup", SCM_EOL);
  73   return sp;
  74 }
  75
  76 void
  77 Hara_kiri_engraver::acknowledge_grob (Grob_info i)
  78 {
  79   Axis_group_engraver::acknowledge_grob (i);
  80   if (staffline_)
  81     {
  82       for (SCM s = interesting_; scm_is_pair (s); s = scm_cdr (s))
  83         {
  84           if (i.grob ()->internal_has_interface (scm_car (s)))
  85             Hara_kiri_group_spanner::add_interesting_item (staffline_, i.grob ());
  86         }
  87     }
  88 }
  89
  90
  91 ADD_ACKNOWLEDGER (Hara_kiri_engraver, grob);
  92 ADD_TRANSLATOR (Hara_kiri_engraver,
  93                 /* doc */
  94                 "Like @code{Axis_group_engraver}, but make a hara-kiri"
  95                 " spanner, and add interesting items (i.e., note heads, lyric"
  96                 " syllables, and normal rests).",
  97
  98                 /* create */
  99                 "VerticalAxisGroup ",
 100
 101                 /* read */
 102                 "keepAliveInterfaces ",
 103
 104                 /* write */
 105                 ""
 106                 );
 107