X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fnote-head-line-engraver.cc;h=a7becd06ef97ada235420047603942a340a35342;hb=36342ddfdbf0c112be9cb4ce471417e9c0e8fa1f;hp=8dde1e86401560354110c49fb807c3d3d8884ffd;hpb=a7f82e4dc22fc6219a9fe0f6874f8c91e3f31f24;p=lilypond.git

diff --git a/lily/note-head-line-engraver.cc b/lily/note-head-line-engraver.cc
index 8dde1e8640..a7becd06ef 100644
--- a/lily/note-head-line-engraver.cc
+++ b/lily/note-head-line-engraver.cc
@@ -26,9 +26,9 @@ public:
   TRANSLATOR_DECLARATIONS (Note_head_line_engraver);
 
 protected:
-  virtual void acknowledge_grob (Grob_info);
-  PRECOMPUTED_VIRTUAL void process_acknowledged ();
-  PRECOMPUTED_VIRTUAL void stop_translation_timestep ();
+  DECLARE_ACKNOWLEDGER (rhythmic_head);
+  void process_acknowledged ();
+  void stop_translation_timestep ();
 
 private:
   Spanner *line_;
@@ -48,24 +48,21 @@ Note_head_line_engraver::Note_head_line_engraver ()
 }
 
 void
-Note_head_line_engraver::acknowledge_grob (Grob_info info)
+Note_head_line_engraver::acknowledge_rhythmic_head (Grob_info info)
 {
-  if (Rhythmic_head::has_interface (info.grob ()))
+  head_ = info.grob ();
+  if (to_boolean (get_property ("followVoice")))
     {
-      head_ = info.grob ();
-      if (to_boolean (get_property ("followVoice")))
+      Context *tr = context ();
+      while (tr && !tr->is_alias (ly_symbol2scm ("Staff")))
+	tr = tr->get_parent_context ();
+
+      if (tr
+	  && tr->is_alias (ly_symbol2scm ("Staff")) && tr != last_staff_)
 	{
-	  Context *tr = context ();
-	  while (tr && !tr->is_alias (ly_symbol2scm ("Staff")))
-	    tr = tr->get_parent_context ();
-
-	  if (tr
-	      && tr->is_alias (ly_symbol2scm ("Staff")) && tr != last_staff_)
-	    {
-	      if (last_head_)
-		follow_ = true;
-	      last_staff_ = tr;
-	    }
+	  if (last_head_)
+	    follow_ = true;
+	  last_staff_ = tr;
 	}
     }
 }
@@ -101,11 +98,11 @@ Note_head_line_engraver::stop_translation_timestep ()
 
 #include "translator.icc"
 
+ADD_ACKNOWLEDGER (Note_head_line_engraver, rhythmic_head);
 ADD_TRANSLATOR (Note_head_line_engraver,
-		/* descr */ "Engrave a line between two note heads, for example a glissando.  If "
+		/* doc */ "Engrave a line between two note heads, for example a glissando.  If "
 		" followVoice is set, staff switches also generate a line.",
-		/* creats*/ "Glissando VoiceFollower",
-		/* accepts */ "glissando-event",
-		/* acks  */ "rhythmic-head-interface",
-		/* reads */ "followVoice",
+		/* create */ "Glissando VoiceFollower",
+		/* accept */ "glissando-event",
+		/* read */ "followVoice",
 		/* write */ "");