lily/grid-point-engraver.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2005--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 "engraver.hh"
  21 #include "item.hh"
  22 #include "moment.hh"
  23
  24 #include "translator.icc"
  25
  26 class Grid_point_engraver : public Engraver
  27 {
  28 public:
  29   TRANSLATOR_DECLARATIONS (Grid_point_engraver);
  30 protected:
  31   void process_music ();
  32 };
  33
  34 void
  35 Grid_point_engraver::process_music ()
  36 {
  37   SCM grid_interval = get_property ("gridInterval");
  38   if (Moment *mom = unsmob_moment (grid_interval))
  39     {
  40       Moment now = now_mom ();
  41
  42       if (!now.main_part_.mod_rat (mom->main_part_))
  43         make_item ("GridPoint", SCM_EOL);
  44     }
  45 }
  46
  47 Grid_point_engraver::Grid_point_engraver ()
  48 {
  49 }
  50
  51 ADD_TRANSLATOR (Grid_point_engraver,
  52                 /* doc */
  53                 "Generate grid points.",
  54
  55                 /* create */
  56                 "GridPoint ",
  57
  58                 /* read */
  59                 "gridInterval ",
  60
  61                 /* write */
  62                 ""
  63                 );
  64