X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Flyric-engraver.cc;h=0d4392d48639b152148ec441633be16c7f49f514;hb=abef60a562c5337a87ad7b38874a446ce4fef863;hp=75c28f91174f47d51a9cb2b53f770dee94844aa3;hpb=a7f82e4dc22fc6219a9fe0f6874f8c91e3f31f24;p=lilypond.git

diff --git a/lily/lyric-engraver.cc b/lily/lyric-engraver.cc
index 75c28f9117..0d4392d486 100644
--- a/lily/lyric-engraver.cc
+++ b/lily/lyric-engraver.cc
@@ -1,19 +1,31 @@
 /*
-  lyric-engraver.cc -- implement Lyric_engraver
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
-
-  (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  Copyright (C) 1997--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
   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 "context.hh"
 #include "engraver.hh"
-#include "font-metric.hh"
 #include "item.hh"
-#include "multi-measure-rest.hh"
 #include "note-head.hh"
-#include "rest.hh"
+#include "stream-event.hh"
+#include "international.hh"
+
+#include "translator.icc"
 
 /**
    Generate texts for lyric syllables.  We only do one lyric at a time.
@@ -22,16 +34,17 @@
 class Lyric_engraver : public Engraver
 {
 protected:
-  PRECOMPUTED_VIRTUAL void stop_translation_timestep ();
-  virtual bool try_music (Music *);
-  PRECOMPUTED_VIRTUAL void process_music ();
+  void stop_translation_timestep ();
+  void process_music ();
+  DECLARE_TRANSLATOR_LISTENER (lyric);
 
 public:
   TRANSLATOR_DECLARATIONS (Lyric_engraver);
 
 private:
-  Music *event_;
+  Stream_event *event_;
   Item *text_;
+  Item *last_text_;
 
   Context *get_voice_context ();
 };
@@ -39,18 +52,15 @@ private:
 Lyric_engraver::Lyric_engraver ()
 {
   text_ = 0;
+  last_text_ = 0;
   event_ = 0;
 }
 
-bool
-Lyric_engraver::try_music (Music *r)
+IMPLEMENT_TRANSLATOR_LISTENER (Lyric_engraver, lyric);
+void
+Lyric_engraver::listen_lyric (Stream_event *ev)
 {
-  if (!event_)
-    {
-      event_ = r;
-      return true;
-    }
-  return false;
+  ASSIGN_EVENT_ONCE (event_, ev);
 }
 
 void
@@ -58,8 +68,15 @@ Lyric_engraver::process_music ()
 {
   if (event_)
     {
-      text_ = make_item ("LyricText", event_->self_scm ());
-      text_->set_property ("text", event_->get_property ("text"));
+      SCM text = event_->get_property ("text");
+
+      if (ly_is_equal (text, scm_from_locale_string (" ")))
+	{
+	  if (last_text_)
+	    last_text_->set_property ("self-alignment-X", scm_from_int (LEFT));
+	}
+      else
+	text_ = make_item ("LyricText", event_->self_scm ());
     }
 }
 
@@ -71,15 +88,17 @@ get_voice_to_lyrics (Context *lyrics)
     return c;
 
   SCM voice_name = lyrics->get_property ("associatedVoice");
-  String nm = lyrics->id_string ();
+  string nm = lyrics->id_string ();
 
   if (scm_is_string (voice_name))
     nm = ly_scm2string (voice_name);
+  else if (nm == "")
+    return 0;
   else
     {
-      int idx = nm.index_last ('-');
-      if (idx >= 0)
-	nm = nm.left_string (idx);
+      ssize idx = nm.rfind ('-');
+      if (idx != NPOS)
+	nm = nm.substr (0, idx);
     }
 
   Context *parent = lyrics;
@@ -105,16 +124,27 @@ get_voice_to_lyrics (Context *lyrics)
 }
 
 Grob *
-get_current_note_head (Context *voice)
+get_current_note_head (Context *voice, bool include_grace_notes)
 {
+  Moment now = voice->now_mom ();
   for (SCM s = voice->get_property ("busyGrobs");
        scm_is_pair (s); s = scm_cdr (s))
     {
-      Item *g = dynamic_cast<Item *> (unsmob_grob (scm_cdar (s)));
+      Grob *g = unsmob_grob (scm_cdar (s));;
+      Moment *end_mom = unsmob_moment (scm_caar (s));
+      if (!end_mom || !g)
+	{
+	  programming_error ("busyGrobs invalid");
+	  continue;
+	}
 
-      if (g && !g->get_column ()
-	  && Note_head::has_interface (g))
-	return g;
+      if (((end_mom->main_part_ > now.main_part_) ||
+           (include_grace_notes && end_mom->grace_part_ > now.grace_part_))
+          && dynamic_cast<Item *> (g)
+          && Note_head::has_interface (g))
+        {
+	  return g;
+        }
     }
 
   return 0;
@@ -129,27 +159,42 @@ Lyric_engraver::stop_translation_timestep ()
 
       if (voice)
 	{
-	  Grob *head = get_current_note_head (voice);
+	  bool include_grace_notes = to_boolean (get_property ("includeGraceNotes"));
+	  Grob *head = get_current_note_head (voice, include_grace_notes);
 
 	  if (head)
 	    {
 	      text_->set_parent (head, X_AXIS);
-	      if (melisma_busy (voice))
-		text_->set_property ("self-alignment-X", scm_int2num (LEFT));
+	      if (melisma_busy (voice)
+		  && !to_boolean (get_property ("ignoreMelismata")))
+		text_->set_property ("self-alignment-X",
+				     get_property ("lyricMelismaAlignment"));
+	    }
+	  else
+	    {
+	      text_->warning (_ ("Lyric syllable does not have note. Use \\lyricsto or associatedVoice."));
+	      text_->set_property ("X-offset", scm_from_int (0));
 	    }
 	}
 
+      last_text_ = text_;
       text_ = 0;
     }
   event_ = 0;
 }
 
-#include "translator.icc"
-
 ADD_TRANSLATOR (Lyric_engraver,
-		/* descr */ "",
-		/* creats*/ "LyricText",
-		/* accepts */ "lyric-event",
-		/* acks  */ "",
-		/* reads */ "",
-		/* write */ "");
+		/* doc */
+		"Engrave text for lyrics.",
+
+		/* create */
+		"LyricText ",
+
+		/* read */
+		"ignoreMelismata "
+		"includeGraceNotes "
+		"lyricMelismaAlignment ",
+
+		/* write */
+		""
+		);