lily/directional-element-interface.cc

   1 /*
   2   directional-element-interface.cc -- implement Directional_element
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1999--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "directional-element-interface.hh"
  10 #include "warn.hh"
  11 #include "grob.hh"
  12
  13 Direction
  14 get_grob_direction (Grob *me)
  15 {
  16   SCM d = me->get_property ("direction");
  17   if (d == ly_symbol2scm ("calculation-in-progress"))
  18     {
  19       programming_error ("Grob direction requested while calculation in progress. ");
  20       return UP;
  21     }
  22   if (!is_direction (d))
  23     return CENTER;
  24
  25   return to_dir (d);
  26 }
  27
  28 void
  29 set_grob_direction (Grob *me, Direction d)
  30 {
  31   SCM sd = scm_from_int (d);
  32   me->set_property ("direction", sd);
  33 }