X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fligature-bracket-engraver.cc;h=acbf66b4bfa8d0ec0404e66ee5cf7ccf107c1527;hb=9106e3bd374198c5457c35181ae1d66b3ec95236;hp=5c0bb246ed0f823d3b9d1217994b4676b9a41441;hpb=7aabfb20c46e0a1de41698ddc6859ccd3a6dea85;p=lilypond.git

diff --git a/lily/ligature-bracket-engraver.cc b/lily/ligature-bracket-engraver.cc
index 5c0bb246ed..acbf66b4bf 100644
--- a/lily/ligature-bracket-engraver.cc
+++ b/lily/ligature-bracket-engraver.cc
@@ -1,32 +1,34 @@
-/*   
+/*
   ligature-bracket-engraver.cc -- implement Ligature_bracket_engraver
-  
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 2002--2003 Juergen Reuter <reuter@ipd.uka.de>
-  
- */
+
+  (c) 2002--2005 Juergen Reuter <reuter@ipd.uka.de>
+*/
+
 #include "ligature-engraver.hh"
 #include "note-column.hh"
 #include "tuplet-bracket.hh"
 #include "spanner.hh"
-#include "warn.hh"
 
+/*
+ * This engraver marks ligatures of any kind by just printing a
+ * horizontal square bracket on top of each ligature.  See class
+ * Ligature_engraver for more information on the interaction between
+ * this class and its superclass.
+ */
 class Ligature_bracket_engraver : public Ligature_engraver
 {
 protected:
   virtual Spanner *create_ligature_spanner ();
-  virtual void acknowledge_grob (Grob_info);
-  virtual void typeset_ligature (Spanner *ligature, Array<Grob_info>);
-
+  virtual void typeset_ligature (Spanner *ligature,
+				 Array<Grob_info> primitives);
+  DECLARE_ACKNOWLEDGER (rest);
+  DECLARE_ACKNOWLEDGER (note_column);
 public:
-  TRANSLATOR_DECLARATIONS(Ligature_bracket_engraver);
-
-private:
-  void typeset_ligature_bracket ();
+  TRANSLATOR_DECLARATIONS (Ligature_bracket_engraver);
 };
 
-
 Ligature_bracket_engraver::Ligature_bracket_engraver ()
 {
 }
@@ -34,33 +36,43 @@ Ligature_bracket_engraver::Ligature_bracket_engraver ()
 Spanner *
 Ligature_bracket_engraver::create_ligature_spanner ()
 {
-  return new Spanner (get_property ("LigatureBracket"));
+  return make_spanner ("LigatureBracket", SCM_EOL);
 }
 
 void
-Ligature_bracket_engraver::typeset_ligature (Spanner *ligature, Array<Grob_info>)
+Ligature_bracket_engraver::typeset_ligature (Spanner *, Array<Grob_info>)
 {
-  typeset_grob (ligature);
+  // no real ligature to typeset; the LigatureBracket just does it
 }
 
 void
-Ligature_bracket_engraver::acknowledge_grob (Grob_info info)
+Ligature_bracket_engraver::acknowledge_note_column (Grob_info info)
 {
   if (current_ligature ())
     {
-      if (Note_column::has_interface (info.grob_))
-	{
-	  Tuplet_bracket::add_column (current_ligature (),
-				      dynamic_cast<Item*> (info.grob_));
-	}
-      else Ligature_engraver::acknowledge_grob (info);
+      Tuplet_bracket::add_column (current_ligature (),
+				  dynamic_cast<Item *> (info.grob ()));
+
+      // avoid "junking empty ligature" message by acknowledging dummy
+      // note head
+      Ligature_engraver::acknowledge_note_head (Grob_info ());
     }
 }
 
-ENTER_DESCRIPTION(Ligature_bracket_engraver,
-/* descr */       "Handles Ligature_events by engraving Ligature brackets.",
-/* creats*/       "TupletBracket",
-/* accepts */     "ligature-event abort-event",
-/* acks  */      "ligature-head-interface rest-interface note-column-interface",
-/* reads */       "",
-/* write */       "");
+void
+Ligature_bracket_engraver::acknowledge_rest (Grob_info info)
+{
+  if (current_ligature ())
+    Ligature_engraver::acknowledge_rest (info);
+}
+
+#include "translator.icc"
+
+ADD_ACKNOWLEDGER (Ligature_bracket_engraver, rest);
+ADD_ACKNOWLEDGER (Ligature_bracket_engraver, note_column);
+ADD_TRANSLATOR (Ligature_bracket_engraver,
+		/* doc */ "Handles Ligature_events by engraving Ligature brackets.",
+		/* create */ "TupletBracket",
+		/* accept */ "ligature-event",
+		/* read */ "",
+		/* write */ "");