lily/breathing-sign-engraver.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1999--2010 Michael Krause
   5
   6   written for the GNU LilyPond music typesetter
   7
   8   TODO:
   9
  10   . Spacing is not yet completely pretty
  11
  12   LilyPond is free software: you can redistribute it and/or modify
  13   it under the terms of the GNU General Public License as published by
  14   the Free Software Foundation, either version 3 of the License, or
  15   (at your option) any later version.
  16
  17   LilyPond is distributed in the hope that it will be useful,
  18   but WITHOUT ANY WARRANTY; without even the implied warranty of
  19   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20   GNU General Public License for more details.
  21
  22   You should have received a copy of the GNU General Public License
  23   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  24 */
  25
  26 #include "breathing-sign.hh"
  27 #include "engraver.hh"
  28 #include "item.hh"
  29 #include "stream-event.hh"
  30
  31 #include "translator.icc"
  32
  33 class Breathing_sign_engraver : public Engraver
  34 {
  35 public:
  36   TRANSLATOR_DECLARATIONS (Breathing_sign_engraver);
  37
  38 protected:
  39   void process_music ();
  40   void stop_translation_timestep ();
  41
  42   DECLARE_TRANSLATOR_LISTENER (breathing);
  43 private:
  44   Stream_event *breathing_sign_event_;
  45   Grob *breathing_sign_;
  46 };
  47
  48 Breathing_sign_engraver::Breathing_sign_engraver ()
  49 {
  50   breathing_sign_ = 0;
  51   breathing_sign_event_ = 0;
  52 }
  53
  54 IMPLEMENT_TRANSLATOR_LISTENER (Breathing_sign_engraver, breathing);
  55 void
  56 Breathing_sign_engraver::listen_breathing (Stream_event *ev)
  57 {
  58   ASSIGN_EVENT_ONCE (breathing_sign_event_, ev);
  59 }
  60
  61 void
  62 Breathing_sign_engraver::process_music ()
  63 {
  64   if (breathing_sign_event_)
  65     {
  66       breathing_sign_ = make_item ("BreathingSign", breathing_sign_event_->self_scm ());
  67     }
  68 }
  69
  70 void
  71 Breathing_sign_engraver::stop_translation_timestep ()
  72 {
  73   breathing_sign_ = 0;
  74   breathing_sign_event_ = 0;
  75 }
  76
  77 ADD_TRANSLATOR (Breathing_sign_engraver,
  78                 /* doc */
  79                 "Create a breathing sign.",
  80
  81                 /* create */
  82                 "BreathingSign ",
  83
  84                 /* read */
  85                 "",
  86
  87                 /* write */
  88                 ""
  89                 );