X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fbeam-performer.cc;h=907fcc4d1ad27acbac2242d12ece5ae127a9727c;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=a7cd2547b1ca64053f0dda0f1405b685206c1eae;hpb=58bcc84c9480dae1b21bc24d8396b91fe19e0131;p=lilypond.git

diff --git a/lily/beam-performer.cc b/lily/beam-performer.cc
index a7cd2547b1..907fcc4d1a 100644
--- a/lily/beam-performer.cc
+++ b/lily/beam-performer.cc
@@ -3,28 +3,31 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1996--2005 Jan Nieuwenhuizen <janneke@gnu.org>
+  (c) 1996--2008 Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
 #include "performer.hh"
 #include "audio-item.hh"
 #include "audio-column.hh"
 #include "global-context.hh"
+#include "stream-event.hh"
 #include "warn.hh"
 
+#include "translator.icc"
+
 class Beam_performer : public Performer
 {
 public:
   TRANSLATOR_DECLARATIONS (Beam_performer);
 
 protected:
-  virtual bool try_music (Music *ev);
-  virtual void start_translation_timestep ();
-  virtual void process_music ();
+  void start_translation_timestep ();
+  void process_music ();
   void set_melisma (bool);
+  DECLARE_TRANSLATOR_LISTENER (beam);
 private:
-  Music *start_ev_;
-  Music *now_stop_ev_;
+  Stream_event *start_ev_;
+  Stream_event *now_stop_ev_;
   bool beam_;
 };
 
@@ -56,7 +59,7 @@ Beam_performer::set_melisma (bool ml)
 {
   SCM b = get_property ("autoBeaming");
   if (!to_boolean (b))
-    context ()->set_property ("beamMelismaBusy", ml ? SCM_BOOL_T :SCM_BOOL_F);
+    context ()->set_property ("beamMelismaBusy", ml ? SCM_BOOL_T : SCM_BOOL_F);
 }
 
 void
@@ -66,26 +69,29 @@ Beam_performer::start_translation_timestep ()
   now_stop_ev_ = 0;
 }
 
-bool
-Beam_performer::try_music (Music *m)
+IMPLEMENT_TRANSLATOR_LISTENER (Beam_performer, beam);
+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", "", "", "");
+ADD_TRANSLATOR (Beam_performer,
+                /* doc */
+                "",
+
+                /* create */
+                "",
+
+                /* read */
+                "",
+
+                /* write */
+                ""
+                );