lily/music-wrapper.cc

   1 /*
   2   music-wrapper.cc -- implement Music_wrapper
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1998--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "music-wrapper.hh"
  10
  11 #include "music.hh"
  12
  13 MAKE_SCHEME_CALLBACK (Music_wrapper, start_callback, 1);
  14 SCM
  15 Music_wrapper::start_callback (SCM m)
  16 {
  17   Music *me = unsmob_music (m);
  18   Music *elt = unsmob_music (me->get_property ("element"));
  19   if (elt)
  20     return elt->start_mom ().smobbed_copy ();
  21   else
  22     return Moment ().smobbed_copy ();
  23 }
  24
  25 MAKE_SCHEME_CALLBACK (Music_wrapper, length_callback, 1);
  26 SCM
  27 Music_wrapper::length_callback (SCM m)
  28 {
  29   Music *me = unsmob_music (m);
  30   Music *elt = unsmob_music (me->get_property ("element"));
  31   if (elt)
  32     return elt->get_length ().smobbed_copy ();
  33   else
  34     return Moment (0).smobbed_copy ();
  35 }
  36