lily/music-wrapper.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1998--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 "music-wrapper.hh"
  21
  22 #include "music.hh"
  23
  24 MAKE_SCHEME_CALLBACK (Music_wrapper, start_callback, 1);
  25 SCM
  26 Music_wrapper::start_callback (SCM m)
  27 {
  28   Music *me = unsmob_music (m);
  29   Music *elt = unsmob_music (me->get_property ("element"));
  30   if (elt)
  31     return elt->start_mom ().smobbed_copy ();
  32   else
  33     return Moment ().smobbed_copy ();
  34 }
  35
  36 MAKE_SCHEME_CALLBACK (Music_wrapper, length_callback, 1);
  37 SCM
  38 Music_wrapper::length_callback (SCM m)
  39 {
  40   Music *me = unsmob_music (m);
  41   Music *elt = unsmob_music (me->get_property ("element"));
  42   if (elt)
  43     return elt->get_length ().smobbed_copy ();
  44   else
  45     return Moment (0).smobbed_copy ();
  46 }
  47