lily/directional-element-interface.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1999--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 "directional-element-interface.hh"
  21 #include "warn.hh"
  22 #include "grob.hh"
  23
  24 Direction
  25 get_grob_direction (Grob *me)
  26 {
  27   SCM d = me->get_property ("direction");
  28   if (d == ly_symbol2scm ("calculation-in-progress"))
  29     {
  30       programming_error ("Grob direction requested while calculation in progress. ");
  31       return UP;
  32     }
  33   if (!is_direction (d))
  34     return CENTER;
  35
  36   return to_dir (d);
  37 }
  38
  39 void
  40 set_grob_direction (Grob *me, Direction d)
  41 {
  42   SCM sd = scm_from_int (d);
  43   me->set_property ("direction", sd);
  44 }