X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fbeam-performer.cc;h=dad58500ca317b0dbe1ce6a52f6cabeada609ea0;hb=5d84bfad4626892bcffd05adcced53c8a2329047;hp=861f66f35aa3436d9961e21feaa26986b859782d;hpb=a7f82e4dc22fc6219a9fe0f6874f8c91e3f31f24;p=lilypond.git

diff --git a/lily/beam-performer.cc b/lily/beam-performer.cc
index 861f66f35a..dad58500ca 100644
--- a/lily/beam-performer.cc
+++ b/lily/beam-performer.cc
@@ -1,17 +1,28 @@
 /*
-  beam-performer.cc -- implement Beam_performer
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 1996--2015 Jan Nieuwenhuizen <janneke@gnu.org>
 
-  (c) 1996--2005 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 "performer.hh"
 #include "audio-item.hh"
 #include "audio-column.hh"
 #include "global-context.hh"
+#include "stream-event.hh"
 #include "warn.hh"
-#include "music.hh"
 
 #include "translator.icc"
 
@@ -21,17 +32,18 @@ public:
   TRANSLATOR_DECLARATIONS (Beam_performer);
 
 protected:
-  virtual bool try_music (Music *ev);
-  PRECOMPUTED_VIRTUAL void start_translation_timestep ();
-  PRECOMPUTED_VIRTUAL void process_music ();
+  void start_translation_timestep ();
+  void process_music ();
   void set_melisma (bool);
+  void listen_beam (Stream_event *);
 private:
-  Music *start_ev_;
-  Music *now_stop_ev_;
+  Stream_event *start_ev_;
+  Stream_event *now_stop_ev_;
   bool beam_;
 };
 
-Beam_performer::Beam_performer ()
+Beam_performer::Beam_performer (Context *c)
+  : Performer (c)
 {
   beam_ = false;
   start_ev_ = 0;
@@ -69,26 +81,34 @@ Beam_performer::start_translation_timestep ()
   now_stop_ev_ = 0;
 }
 
-bool
-Beam_performer::try_music (Music *m)
+void
+Beam_performer::listen_beam (Stream_event *ev)
 {
-  if (m->is_mus_type ("beam-event"))
-    {
-      Direction d = to_dir (m->get_property ("span-direction"));
-
-      if (d == START)
-	{
-	  start_ev_ = m;
-	}
-      else if (d == STOP)
-	{
-	  now_stop_ev_ = m;
-	}
-      return true;
-    }
-  return false;
+  Direction d = to_dir (ev->get_property ("span-direction"));
+
+  if (d == START)
+    start_ev_ = ev;
+  else if (d == STOP)
+    now_stop_ev_ = ev;
 }
 
-ADD_TRANSLATOR (Beam_performer, "", "",
-		"beam-event", "", "", "");
+void
+Beam_performer::boot ()
+{
+  ADD_LISTENER (Beam_performer, beam);
+}
+
+ADD_TRANSLATOR (Beam_performer,
+                /* doc */
+                "",
+
+                /* create */
+                "",
+
+                /* read */
+                "",
+
+                /* write */
+                ""
+               );