lily/slash-repeat-engraver.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2000--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>, Erik Sandberg
   5   <mandolaerik@gmail.com>
   6
   7   LilyPond is free software: you can redistribute it and/or modify
   8   it under the terms of the GNU General Public License as published by
   9   the Free Software Foundation, either version 3 of the License, or
  10   (at your option) any later version.
  11
  12   LilyPond is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   You should have received a copy of the GNU General Public License
  18   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "item.hh"
  22 #include "engraver.hh"
  23 #include "stream-event.hh"
  24
  25 #include "translator.icc"
  26
  27 /*
  28   This acknowledges repeated music with "percent" style.  It typesets
  29   a slash sign or double percent sign.
  30 */
  31 class Slash_repeat_engraver : public Engraver
  32 {
  33 public:
  34   TRANSLATOR_DECLARATIONS (Slash_repeat_engraver);
  35 protected:
  36   Stream_event *slash_;
  37 protected:
  38   DECLARE_TRANSLATOR_LISTENER (repeat_slash);
  39   void process_music ();
  40 };
  41
  42 Slash_repeat_engraver::Slash_repeat_engraver ()
  43 {
  44   slash_ = 0;
  45 }
  46
  47 IMPLEMENT_TRANSLATOR_LISTENER (Slash_repeat_engraver, repeat_slash);
  48 void
  49 Slash_repeat_engraver::listen_repeat_slash (Stream_event *ev)
  50 {
  51     ASSIGN_EVENT_ONCE (slash_, ev);
  52 }
  53
  54 void
  55 Slash_repeat_engraver::process_music ()
  56 {
  57   if (slash_)
  58     {
  59       SCM count = slash_->get_property ("slash-count");
  60       if (scm_to_int (count) == 0)
  61         make_item ("DoubleRepeatSlash", slash_->self_scm ());
  62       else
  63         make_item ("RepeatSlash", slash_->self_scm ());
  64       slash_ = 0;
  65     }
  66 }
  67
  68 ADD_TRANSLATOR (Slash_repeat_engraver,
  69                 /* doc */
  70                 "Make beat repeats.",
  71
  72                 /* create */
  73                 "DoubleRepeatSlash "
  74                 "RepeatSlash ",
  75
  76                 /* read */
  77                 "",
  78
  79                 /* write */
  80                 ""
  81                 );