lily/pitch-squash-engraver.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1997--2011 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 "engraver.hh"
  21
  22 #include "staff-symbol-referencer.hh"
  23 #include "note-head.hh"
  24 #include "rhythmic-head.hh"
  25 #include "grob.hh"
  26
  27 class Pitch_squash_engraver : public Engraver
  28 {
  29 public:
  30   TRANSLATOR_DECLARATIONS (Pitch_squash_engraver);
  31   DECLARE_ACKNOWLEDGER (note_head);
  32 };
  33
  34 void
  35 Pitch_squash_engraver::acknowledge_note_head (Grob_info i)
  36 {
  37   SCM newpos = get_property ("squashedPosition");
  38   if (scm_is_number (newpos))
  39     i.grob ()->set_property ("staff-position", newpos);
  40 }
  41
  42 Pitch_squash_engraver::Pitch_squash_engraver ()
  43 {
  44 }
  45
  46 #include "translator.icc"
  47 ADD_ACKNOWLEDGER (Pitch_squash_engraver, note_head);
  48 ADD_TRANSLATOR (Pitch_squash_engraver,
  49                 /* doc */
  50                 "Set the vertical position of note heads to"
  51                 " @code{squashedPosition}, if that property is set.  This can"
  52                 " be used to make a single-line staff demonstrating the"
  53                 " rhythm of a melody.",
  54
  55                 /* create */
  56                 "",
  57
  58                 /* read */
  59                 "squashedPosition ",
  60
  61                 /* write */
  62                 ""
  63                 );