Web-ja: update introduction

[lilypond.git] / lily / time-signature-performer.cc

diff --git a/lily/time-signature-performer.cc b/lily/time-signature-performer.cc
index cb3f1322a9a1ca307d78d9f408f3306dffc2be9e..75c3ef5d086a87ddf99e6eed3e8dca81dda59e85 100644 (file)
--- a/lily/time-signature-performer.cc
+++ b/lily/time-signature-performer.cc
@@ -1,70 +1,103 @@
 /*
-  time-signature-performer.cc -- implement Time_signature_performer
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 1997--2015 Jan Nieuwenhuizen <janneke@gnu.org>
 
-  (c)  1997--2001 Jan Nieuwenhuizen <janneke@gnu.org>
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "audio-item.hh"
-#include "lily-proto.hh"
 #include "performer.hh"
-
+#include "protected-scm.hh"
 
 class Time_signature_performer : public Performer
 {
 public:
-  TRANSLATOR_DECLARATIONS(Time_signature_performer);
+  TRANSLATOR_DECLARATIONS (Time_signature_performer);
   ~Time_signature_performer ();
 
 protected:
 
-  virtual void stop_translation_timestep ();
-  virtual void create_audio_elements ();
-
+  void stop_translation_timestep ();
+  void process_music ();
+  virtual void derived_mark () const;
   SCM prev_fraction_;
 private:
 
-  Audio_time_signature* audio_p_;
+  Audio_time_signature *audio_;
 };
 
+void
+Time_signature_performer::derived_mark () const
+{
+  scm_gc_mark (prev_fraction_);
+}
 
-Time_signature_performer::Time_signature_performer ()
+Time_signature_performer::Time_signature_performer (Context *c)
+  : Performer (c)
 {
   prev_fraction_ = SCM_BOOL_F;
-  audio_p_ = 0;
+  audio_ = 0;
 }
 
 Time_signature_performer::~Time_signature_performer ()
 {
 }
 
-
 void
-Time_signature_performer::create_audio_elements ()
+Time_signature_performer::process_music ()
 {
   SCM fr = get_property ("timeSignatureFraction");
-  if (gh_pair_p (fr) && !gh_equal_p (fr, prev_fraction_))
+  if (scm_is_pair (fr) && !ly_is_equal (fr, prev_fraction_))
     {
       prev_fraction_ = fr;
-      int b = gh_scm2int (ly_car (fr));
-      int o = gh_scm2int (ly_cdr (fr));
-      
-      audio_p_ = new Audio_time_signature (b,o);
-      Audio_element_info info (audio_p_, 0);
-      announce_element (info);
+      int b = scm_to_int (scm_car (fr));
+      int o = scm_to_int (scm_cdr (fr));
 
+      audio_ = new Audio_time_signature (b, o);
+      Audio_element_info info (audio_, 0);
+      announce_element (info);
     }
 }
 
 void
 Time_signature_performer::stop_translation_timestep ()
 {
-  if (audio_p_)
+  if (audio_)
     {
-      play_element (audio_p_);
-      audio_p_ = 0;
+      audio_ = 0;
     }
 }
 
-ENTER_DESCRIPTION (Time_signature_performer, "","","","","" );
+#include "translator.icc"
+
+void
+Time_signature_performer::boot ()
+{
+
+}
+
+ADD_TRANSLATOR (Time_signature_performer,
+                /* doc */
+                "",
+
+                /* create */
+                "",
+
+                /* read */
+                "",
+
+                /* write */
+                ""
+               );