Web-ja: update introduction

[lilypond.git] / lily / chord-tremolo-engraver.cc

diff --git a/lily/chord-tremolo-engraver.cc b/lily/chord-tremolo-engraver.cc
index f0ac33d25ab0f134a62e1ff0042bc04e35981170..9e48a1a4908d5a21bf0c0e59a9242483979f4dd3 100644 (file)
--- a/lily/chord-tremolo-engraver.cc
+++ b/lily/chord-tremolo-engraver.cc
@@ -1,8 +1,8 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 2000--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
-                Erik Sandberg <mandolaerik@gmail.com>
+  Copyright (C) 2000--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
+                 Erik Sandberg <mandolaerik@gmail.com>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -62,18 +62,18 @@ protected:
 protected:
   virtual void finalize ();
   void process_music ();
-  DECLARE_TRANSLATOR_LISTENER (tremolo_span);
-  DECLARE_ACKNOWLEDGER (stem);
+  void listen_tremolo_span (Stream_event *);
+  void acknowledge_stem (Grob_info);
 };
 
-Chord_tremolo_engraver::Chord_tremolo_engraver ()
+Chord_tremolo_engraver::Chord_tremolo_engraver (Context *c)
+  : Engraver (c)
 {
   beam_ = 0;
   repeat_ = 0;
   previous_stem_ = 0;
 }
 
-IMPLEMENT_TRANSLATOR_LISTENER (Chord_tremolo_engraver, tremolo_span);
 void
 Chord_tremolo_engraver::listen_tremolo_span (Stream_event *ev)
 {
@@ -142,34 +142,39 @@ Chord_tremolo_engraver::acknowledge_stem (Grob_info info)
       if (Stem::duration_log (s) != 1)
         beam_->set_property ("gap-count", scm_from_int (gap_count));
 
-
       if (info.ultimate_event_cause ()->in_event_class ("rhythmic-event"))
-       Beam::add_stem (beam_, s);
+        Beam::add_stem (beam_, s);
       else
-       {
-         string s = _ ("stem must have Rhythmic structure");
-         if (info.event_cause ())
-           info.event_cause ()->origin ()->warning (s);
-         else
-           ::warning (s);
-       }
+        {
+          string s = _ ("stem must have Rhythmic structure");
+          if (info.event_cause ())
+            info.event_cause ()->origin ()->warning (s);
+          else
+            ::warning (s);
+        }
       // Store current grob, so we can possibly end the spanner here (and
       // reset the beam direction to RIGHT)
       previous_stem_ = s;
     }
 }
 
-ADD_ACKNOWLEDGER (Chord_tremolo_engraver, stem);
+void
+Chord_tremolo_engraver::boot ()
+{
+  ADD_LISTENER (Chord_tremolo_engraver, tremolo_span);
+  ADD_ACKNOWLEDGER (Chord_tremolo_engraver, stem);
+}
+
 ADD_TRANSLATOR (Chord_tremolo_engraver,
-               /* doc */
-               "Generate beams for tremolo repeats.",
+                /* doc */
+                "Generate beams for tremolo repeats.",
 
-               /* create */
-               "Beam ",
+                /* create */
+                "Beam ",
 
-               /* read */
-               "",
+                /* read */
+                "",
 
-               /* write */
-               ""
-               );
+                /* write */
+                ""
+               );