-/*
- grace-iterator.cc -- implement Grace_iterator
-
- 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-iterator.hh"
-#include "global-translator.hh"
-#include "warn.hh"
+ Copyright (C) 1999--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
-Grace_iterator::~Grace_iterator ()
-{
- // child_iter_p_ = 0;
-}
+ 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.
-void
-Grace_iterator::construct_children ()
-{
- Translator_group * t = report_to_l ()->find_create_translator_l ("Grace", ""); // umgh.
+ 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.
- if (t)
- set_translator (t);
- Music_wrapper_iterator::construct_children ();
-}
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "grace-iterator.hh"
+#include "global-context.hh"
+#include "music.hh"
void
-Grace_iterator::process (Moment)
+Grace_iterator::process (Moment m)
{
- Global_translator * t = dynamic_cast<Global_translator*>(report_to_l ());
- if (t)
- {
- t->start ();
- t->run_iterator_on_me (child_iter_p_);
- delete child_iter_p_;
- child_iter_p_ = 0;
- t->finish ();
- }
- else
+ Moment main;
+ main.main_part_ = -start_mom_.grace_part_ + m.grace_part_;
+
+ // GraceChange is announced in order to make the Grace_engraver able
+ // to distinguish \stemNeutral \grace { ... and \grace { \stemNeutral ...
+ if (in_grace_ != bool (m.grace_part_) && child_iter_ && child_iter_->get_outlet ())
{
- warning (_("no Grace context available"));
+ send_stream_event (child_iter_->get_outlet (), "GraceChange", get_music ()->origin ());
}
+ in_grace_ = m.grace_part_;
+
+ Music_wrapper_iterator::process (main);
+
+ /* We can safely do this, since \grace should always be inside
+ sequential. */
+ descend_to_child (child_iter_->get_outlet ());
}
Moment
Grace_iterator::pending_moment () const
{
- return 0;
+ Moment cp = Music_wrapper_iterator::pending_moment ();
+
+ Moment pending;
+ pending.grace_part_ = start_mom_.grace_part_ + cp.main_part_;
+
+ return pending;
}
+IMPLEMENT_CTOR_CALLBACK (Grace_iterator);