X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Farpeggio-engraver.cc;h=58dd2c6fcd866e26fb9026596cd2061ddf55a247;hb=90fbf91f6169ddb2f07a1d95d132babf33934620;hp=856b5a7303899c61a934af799fca2f4eeea3ae78;hpb=a7f82e4dc22fc6219a9fe0f6874f8c91e3f31f24;p=lilypond.git

diff --git a/lily/arpeggio-engraver.cc b/lily/arpeggio-engraver.cc
index 856b5a7303..58dd2c6fcd 100644
--- a/lily/arpeggio-engraver.cc
+++ b/lily/arpeggio-engraver.cc
@@ -1,9 +1,20 @@
 /*
-  arpeggio-engraver.cc -- implement Arpeggio_engraver
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 2000--2010 Jan Nieuwenhuizen <janneke@gnu.org>
 
-  (c) 2000--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 "engraver.hh"
@@ -13,7 +24,9 @@
 #include "stem.hh"
 #include "rhythmic-head.hh"
 #include "side-position-interface.hh"
+#include "stream-event.hh"
 #include "note-column.hh"
+#include "item.hh"
 
 #include "translator.icc"
 
@@ -22,14 +35,15 @@ class Arpeggio_engraver : public Engraver
 public:
   TRANSLATOR_DECLARATIONS (Arpeggio_engraver);
 
+  void acknowledge_stem (Grob_info);
+  void acknowledge_rhythmic_head (Grob_info);
 protected:
-  virtual void acknowledge_grob (Grob_info);
-  PRECOMPUTED_VIRTUAL void process_music ();
-  PRECOMPUTED_VIRTUAL void stop_translation_timestep ();
-  virtual bool try_music (Music *);
+  void process_music ();
+  void stop_translation_timestep ();
+  DECLARE_TRANSLATOR_LISTENER (arpeggio);
 private:
   Item *arpeggio_;
-  Music *arpeggio_event_;
+  Stream_event *arpeggio_event_;
 };
 
 Arpeggio_engraver::Arpeggio_engraver ()
@@ -38,45 +52,36 @@ Arpeggio_engraver::Arpeggio_engraver ()
   arpeggio_event_ = 0;
 }
 
-bool
-Arpeggio_engraver::try_music (Music *m)
+IMPLEMENT_TRANSLATOR_LISTENER (Arpeggio_engraver, arpeggio);
+void Arpeggio_engraver::listen_arpeggio (Stream_event *ev)
 {
-  if (!arpeggio_event_)
-    {
-      arpeggio_event_ = m;
-    }
-  return true;
+  ASSIGN_EVENT_ONCE (arpeggio_event_, ev);
 }
 
 void
-Arpeggio_engraver::acknowledge_grob (Grob_info info)
+Arpeggio_engraver::acknowledge_stem (Grob_info info)
 {
   if (arpeggio_)
     {
-      if (Stem::has_interface (info.grob ()))
-	{
-	  if (!arpeggio_->get_parent (Y_AXIS))
-	    arpeggio_->set_parent (info.grob (), Y_AXIS);
-
-	  Pointer_group_interface::add_grob (arpeggio_,
-					     ly_symbol2scm ("stems"),
-					     info.grob ());
-	}
-
-      /*
-	We can't catch local key items (accidentals) from Voice context,
-	see Local_key_engraver
-      */
-      else if (Rhythmic_head::has_interface (info.grob ()))
-	{
-	  Side_position_interface::add_support (arpeggio_, info.grob ());
-	}
-      else if (Note_column::has_interface (info.grob ()))
-	{
-	  info.grob ()->set_object ("arpeggio", arpeggio_->self_scm ());
-	}
+      if (!arpeggio_->get_parent (Y_AXIS))
+	arpeggio_->set_parent (info.grob (), Y_AXIS);
+
+      Pointer_group_interface::add_grob (arpeggio_,
+					 ly_symbol2scm ("stems"),
+					 info.grob ());
     }
 }
+void
+Arpeggio_engraver::acknowledge_rhythmic_head (Grob_info info)
+{
+  if (arpeggio_)
+
+    /*
+      We can't catch local key items (accidentals) from Voice context,
+      see Local_key_engraver
+    */
+    Side_position_interface::add_support (arpeggio_, info.grob ());
+}
 
 void
 Arpeggio_engraver::process_music ()
@@ -94,10 +99,19 @@ Arpeggio_engraver::stop_translation_timestep ()
   arpeggio_event_ = 0;
 }
 
+ADD_ACKNOWLEDGER (Arpeggio_engraver, stem);
+ADD_ACKNOWLEDGER (Arpeggio_engraver, rhythmic_head);
+
 ADD_TRANSLATOR (Arpeggio_engraver,
-		/* descr */ "Generate an Arpeggio symbol",
-		/* creats*/ "Arpeggio",
-		/* accepts */ "arpeggio-event",
-		/* acks  */ "stem-interface rhythmic-head-interface note-column-interface",
-		/* reads */ "",
-		/* write */ "");
+		/* doc */
+		"Generate an Arpeggio symbol.",
+
+		/* create */
+		"Arpeggio",
+
+		/* read */
+		"",
+
+		/* write */
+		""
+		);