X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fgrace-engraver.cc;h=5055b86807dbb445ea91417cbbc8b6ec14c783d0;hb=c9f2e5f23fd435ab69b4313a2e5902556cc91511;hp=352fc840fd57325acd08aed5f3a72e367ebae1b5;hpb=728e41a1741382885396935663e35f9dceaf1d49;p=lilypond.git

diff --git a/lily/grace-engraver.cc b/lily/grace-engraver.cc
index 352fc840fd..5055b86807 100644
--- a/lily/grace-engraver.cc
+++ b/lily/grace-engraver.cc
@@ -1,10 +1,20 @@
-/* 
-  grace-engraver.cc --  implement Grace_engraver
-  
-  source file of the GNU LilyPond music typesetter
-  
-  (c) 2004 Han-Wen Nienhuys <hanwen@xs4all.nl>
-  
+/*
+  This file is part of LilyPond, the GNU music typesetter.
+
+  Copyright (C) 2004--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
+
+  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"
@@ -13,30 +23,32 @@
 
 class Grace_engraver : public Engraver
 {
+  void consider_change_grace_settings ();
 protected:
-  virtual void start_translation_timestep ();
-  virtual void derived_mark ();
-  
+  void start_translation_timestep ();
+  virtual void derived_mark () const;
+  virtual void initialize ();
+
   TRANSLATOR_DECLARATIONS (Grace_engraver);
   Moment last_moment_;
   SCM grace_settings_;
 public:
 };
 
-
-Grace_engraver::Grace_engraver()
+Grace_engraver::Grace_engraver ()
 {
   grace_settings_ = SCM_EOL;
+  last_moment_ = Moment (Rational (-1, 1));
 }
 
 void
-Grace_engraver::derived_mark ()
+Grace_engraver::initialize ()
 {
-  scm_gc_mark (grace_settings_);
+  consider_change_grace_settings ();
 }
 
 void
-Grace_engraver::start_translation_timestep ()
+Grace_engraver::consider_change_grace_settings ()
 {
   Moment now = now_mom ();
   if (last_moment_.grace_part_ && !now.grace_part_)
@@ -65,38 +77,53 @@ Grace_engraver::start_translation_timestep ()
 	  SCM context_name = scm_car (entry);
 	  SCM grob = scm_cadr (entry);
 	  SCM sym = scm_caddr (entry);
-	  SCM val = scm_cadddr (entry);
+	  SCM val = scm_cadr (scm_cddr (entry));
 
 	  Context *c = context ();
-	  while (c  
-		 && c->context_name_symbol () != context_name)
-	    {
-	      c = c->get_parent_context ();	      
-	    }
+	  while (c && !c->is_alias (context_name))
+	    c = c->get_parent_context ();
 
-	  if (c) 
+	  if (c)
 	    {
 	      execute_pushpop_property (c,
 					grob, sym, val);
 	      grace_settings_
-		= scm_cons (scm_cons (c->self_scm(), entry),  grace_settings_);
+		= scm_cons (scm_cons (c->self_scm (), entry), grace_settings_);
 	    }
 	  else
-	    {
-	      programming_error ("Cannot find context");
-	      scm_display (context_name, scm_current_error_port());
-	    }
+	      programming_error ("cannot find context from graceSettings: "
+				 + ly_symbol2string (context_name));
 	}
     }
 
-  last_moment_ = now;
+  last_moment_ = now_mom ();
 }
 
+void
+Grace_engraver::derived_mark () const
+{
+  scm_gc_mark (grace_settings_);
+  Engraver::derived_mark ();
+}
+
+void
+Grace_engraver::start_translation_timestep ()
+{
+  consider_change_grace_settings ();
+}
+
+#include "translator.icc"
+
+ADD_TRANSLATOR (Grace_engraver,
+		/* doc */
+		"Set font size and other properties for grace notes.",
+
+		/* create */
+		"",
+
+		/* read */
+		"graceSettings ",
 
-ENTER_DESCRIPTION (Grace_engraver,
-		   /* descr */       "Set font size and other properties for grace notes.",
-		   /* creats*/       "",
-		   /* accepts */     "",
-		   /* acks  */      "",
-		   /* reads */       "graceSettings",
-		   /* write */       "");
+		/* write */
+		""
+		);