X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fhyphen-engraver.cc;h=3e03d9b8e04199cd8fb42420ff23740282d081e9;hb=f6bd48526091ebf836ce8cbf89b83593b1549736;hp=94f2ae76cff2121fbb1440d0eb7947f543d958fb;hpb=ad8959e79687e3000919f4a4bc6072b1b45eae8d;p=lilypond.git

diff --git a/lily/hyphen-engraver.cc b/lily/hyphen-engraver.cc
index 94f2ae76cf..3e03d9b8e0 100644
--- a/lily/hyphen-engraver.cc
+++ b/lily/hyphen-engraver.cc
@@ -2,88 +2,85 @@
   hyphen-engraver.cc -- implement Hyphen_engraver
 
   source file of the GNU LilyPond music typesetter
-  
-  (c) 1999--2004 Glen Prideaux <glenprideaux@iname.com>,
-                  Han-Wen Nienhuys <hanwen@cs.uu.nl>,
-                  Jan Nieuwenhuizen <janneke@gnu.org>
+
+  (c) 1999--2007 Glen Prideaux <glenprideaux@iname.com>,
+  Han-Wen Nienhuys <hanwen@xs4all.nl>,
+  Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
-#include "warn.hh"
-#include "item.hh"
 #include "engraver.hh"
+#include "international.hh"
+#include "item.hh"
+#include "pointer-group-interface.hh"
 #include "spanner.hh"
+#include "stream-event.hh"
+#include "warn.hh"
+
+#include "translator.icc"
 
 class Hyphen_engraver : public Engraver
 {
-  Music *ev_;
+  Stream_event *ev_;
+  Stream_event *finished_ev_;
+
   Spanner *hyphen_;
-  Spanner *finished_hyphen_;  
+  Spanner *finished_hyphen_;
+
 public:
   TRANSLATOR_DECLARATIONS (Hyphen_engraver);
 
 protected:
-  virtual void acknowledge_grob (Grob_info);
-  virtual void finalize ();
-  virtual bool try_music (Music*);
-  virtual void stop_translation_timestep ();
-  virtual void process_music ();
-private:
-
-};
 
+  DECLARE_ACKNOWLEDGER (lyric_syllable);
+  DECLARE_TRANSLATOR_LISTENER (hyphen);
 
+  virtual void finalize ();
 
+  void stop_translation_timestep ();
+  void process_music ();
+};
 
 Hyphen_engraver::Hyphen_engraver ()
 {
   hyphen_ = 0;
   finished_hyphen_ = 0;
+  finished_ev_ = 0;
   ev_ = 0;
 }
 
 void
-Hyphen_engraver::acknowledge_grob (Grob_info i)
+Hyphen_engraver::acknowledge_lyric_syllable (Grob_info i)
 {
-  Item * item =  dynamic_cast<Item*> (i.grob_);
-  // -> Text_item
-  if (item && item->internal_has_interface (ly_symbol2scm ("lyric-syllable-interface")))
-    {
-      if (hyphen_)
-	hyphen_->set_bound (LEFT, item);
+  Item *item = i.item ();
+  
+  if (!hyphen_)
+    hyphen_ = make_spanner ("LyricSpace", item->self_scm ());
 
-      if (finished_hyphen_)
-	finished_hyphen_->set_bound (RIGHT, item);
-    }
+  if (hyphen_)
+    hyphen_->set_bound (LEFT, item);
+      
+  if (finished_hyphen_)
+    finished_hyphen_->set_bound (RIGHT, item);
 }
 
-
-bool
-Hyphen_engraver::try_music (Music* r)
+IMPLEMENT_TRANSLATOR_LISTENER (Hyphen_engraver, hyphen);
+void
+Hyphen_engraver::listen_hyphen (Stream_event *ev)
 {
-  if (ev_)
-    return false;
-
-  ev_ = r;
-  return true;
+  ASSIGN_EVENT_ONCE (ev_, ev);
 }
 
 void
-completize_hyphen (Spanner* sp)
+completize_hyphen (Spanner *sp)
 {
   if (!sp->get_bound (RIGHT))
     {
-      SCM heads = sp->get_property ("heads");
-      if (ly_c_pair_p (heads))
-	{
-	  Item* it = dynamic_cast<Item*> (unsmob_grob (ly_car (heads)));
-	  if (it)
-	    sp->set_bound (RIGHT, it);
-	}
+      extract_item_set (sp, "heads", heads);
+      if (heads.size ())
+	sp->set_bound (RIGHT, heads.back ());
     }
 }
 
-  
-
 void
 Hyphen_engraver::finalize ()
 {
@@ -106,10 +103,11 @@ Hyphen_engraver::finalize ()
 
       if (!finished_hyphen_->get_bound (RIGHT))
 	{
-	  finished_hyphen_->warning (_("unterminated hyphen; removing"));
+	  if (finished_ev_)
+	    finished_hyphen_->warning (_ ("unterminated hyphen; removing"));
 	  finished_hyphen_->suicide ();
 	}
-      finished_hyphen_ =0;
+      finished_hyphen_ = 0;
     }
 }
 
@@ -117,41 +115,40 @@ void
 Hyphen_engraver::process_music ()
 {
   if (ev_)
-    {
-      hyphen_ = make_spanner ("LyricHyphen", ev_->self_scm ()
-);
-    }
+    hyphen_ = make_spanner ("LyricHyphen", ev_->self_scm ());
 }
 
-
 void
 Hyphen_engraver::stop_translation_timestep ()
 {
   if (finished_hyphen_ && finished_hyphen_->get_bound (RIGHT))
     {
       finished_hyphen_ = 0;
+      finished_ev_ = 0;
     }
-
+  
   if (finished_hyphen_ && hyphen_)
     {
-      programming_error ("Haven't finished hyphen yet.");
-      finished_hyphen_ =0;
+      programming_error ("hyphen not finished yet");
+      finished_hyphen_ = 0;
+      finished_ev_ = 0;
     }
-  
+
   if (hyphen_)
-    finished_hyphen_ = hyphen_;
+    {
+      finished_hyphen_ = hyphen_;
+      finished_ev_ = ev_;
+    }
+  
   hyphen_ = 0;
-
   ev_ = 0;
 }
 
+ADD_ACKNOWLEDGER (Hyphen_engraver, lyric_syllable);
 
-
-
-ENTER_DESCRIPTION (Hyphen_engraver,
-/* descr */       "Create lyric hyphens",
-/* creats*/       "LyricHyphen",
-/* accepts */     "hyphen-event",
-/* acks  */      "lyric-syllable-interface",
-/* reads */       "",
-/* write */       "");
+ADD_TRANSLATOR (Hyphen_engraver,
+		/* doc */ "Create lyric hyphens and "
+		"distance constraints between words.",
+		/* create */ "LyricHyphen LyricSpace",
+		/* read */ "",
+		/* write */ "");