Doc-es: various updates.

[lilypond.git] / lily / grace-music.cc

diff --git a/lily/grace-music.cc b/lily/grace-music.cc
index a072d37a597ef650ab9777d63f2f96b825dcd7ff..8337a0b7f5e2b1bb72ee0b5d126900abec60f45c 100644 (file)
--- a/lily/grace-music.cc
+++ b/lily/grace-music.cc
@@ -1,30 +1,37 @@
-/*   
-  grace-music.cc --  implement Grace_music
-  
-  source file of the GNU LilyPond music typesetter
-  
-  (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
+/*
+  This file is part of LilyPond, the GNU music typesetter.
 
-#include "grace-music.hh"
-#include "grace-iterator.hh"
+  Copyright (C) 1999--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-void
-Grace_music::compress (Moment)
-{
-  
-}
+  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.
 
-Moment
-Grace_music::length_mom () const
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "music.hh"
+#include "music-wrapper.hh"
+
+class Grace_music
 {
-  return 0;
-}
+public:
+  DECLARE_SCHEME_CALLBACK (start_callback, (SCM));
+};
 
-Grace_music::Grace_music (Music *p)
-  : Music_wrapper (p)
+MAKE_SCHEME_CALLBACK (Grace_music, start_callback, 1);
+SCM
+Grace_music::start_callback (SCM m)
 {
-  set_mus_property ("type",
-                   Grace_iterator::constructor_cxx_function);
+  Moment *l = unsmob<Moment> (Music_wrapper::length_callback (m));
+  Moment gl;
+  gl.grace_part_ = -(l->main_part_ + l->grace_part_);
+  return gl.smobbed_copy ();
 }