/*
- extender-engraver.cc -- implement Extender_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- 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>
-*/
+ Copyright (C) 1999--2009 Glen Prideaux <glenprideaux@iname.com>,
+ 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 "group-interface.hh"
+#include "international.hh"
#include "item.hh"
#include "lyric-extender.hh"
#include "note-head.hh"
+#include "pointer-group-interface.hh"
+#include "stream-event.hh"
#include "warn.hh"
+#include "spanner.hh"
+#include "paper-column.hh"
+
+#include "translator.icc"
void completize_extender (Spanner *sp);
class Extender_engraver : public Engraver
{
- Music *ev_;
+ Stream_event *ev_;
Spanner *extender_;
Spanner *pending_extender_;
+ bool current_lyric_is_skip_;
public:
TRANSLATOR_DECLARATIONS (Extender_engraver);
protected:
- virtual void acknowledge_grob (Grob_info);
+ DECLARE_TRANSLATOR_LISTENER (extender);
+ DECLARE_ACKNOWLEDGER (lyric_syllable);
+
virtual void finalize ();
- virtual bool try_music (Music*);
- virtual void stop_translation_timestep ();
- virtual void process_music ();
-};
+ void stop_translation_timestep ();
+ void process_music ();
+};
Extender_engraver::Extender_engraver ()
{
+ current_lyric_is_skip_ = false;
extender_ = 0;
pending_extender_ = 0;
ev_ = 0;
}
-bool
-Extender_engraver::try_music (Music *r)
+IMPLEMENT_TRANSLATOR_LISTENER (Extender_engraver, extender);
+void
+Extender_engraver::listen_extender (Stream_event *ev)
{
- if (!ev_)
- {
- ev_ = r;
- return true;
- }
- return false;
+ ASSIGN_EVENT_ONCE (ev_, ev);
}
void
}
void
-Extender_engraver::acknowledge_grob (Grob_info i)
+Extender_engraver::acknowledge_lyric_syllable (Grob_info i)
{
- Item *item = dynamic_cast<Item*> (i.grob_);
+ Item *item = i.item ();
+ if (extender_)
+ extender_->set_bound (LEFT, item);
- if (item
- && item->internal_has_interface (ly_symbol2scm ("lyric-syllable-interface")))
- {
- if (extender_)
- extender_->set_bound (LEFT, item);
+ SCM text = item->get_property ("text");
+ current_lyric_is_skip_ = ly_is_equal (text, scm_from_locale_string (" "));
- if (pending_extender_)
- {
- pending_extender_->set_property ("next", item->self_scm ());
- completize_extender (pending_extender_);
- pending_extender_ = 0;
- }
+ if (pending_extender_ && !current_lyric_is_skip_)
+ {
+ pending_extender_->set_object ("next", item->self_scm ());
+ completize_extender (pending_extender_);
+ pending_extender_ = 0;
}
}
Pointer_group_interface::add_grob (extender_,
ly_symbol2scm ("heads"), h);
}
-
- if (pending_extender_)
+
+ if (pending_extender_)
+ {
+ Pointer_group_interface::add_grob (pending_extender_,
+ ly_symbol2scm ("heads"), h);
+ /*
+ The following check addresses the case where the lyrics end before
+ the associated voice. The current_lyric_is_skip_ check is
+ necessary to handle manual melismata, which should not result in
+ extenders being completized. We also need to make sure that we're not
+ in the middle of a note (happens when this function is called because
+ of an event in a voice other than our associated one).
+ */
+ if (!melisma_busy (voice) && !current_lyric_is_skip_)
+ {
+ Moment now = voice->now_mom ();
+ Paper_column *column = (dynamic_cast<Item *> (h))->get_column ();
+ Moment *start_mom = column ? unsmob_moment (column->get_property ("when")) : 0;
+ if (!column || (start_mom->main_part_ == now.main_part_))
+ {
+ completize_extender (pending_extender_);
+ pending_extender_ = 0;
+ }
+ }
+ }
+ }
+ else
+ {
+ if (pending_extender_
+ && !get_property ("extendersOverRests"))
{
- Pointer_group_interface::add_grob (pending_extender_,
- ly_symbol2scm ("heads"), h);
+ completize_extender (pending_extender_);
+ pending_extender_ = 0;
}
+
}
-
if (extender_)
{
pending_extender_ = extender_;
{
if (!sp->get_bound (RIGHT))
{
- SCM heads = sp->get_property ("heads");
- if (scm_is_pair (heads))
- {
- Item *it = dynamic_cast<Item*> (unsmob_grob (scm_car (heads)));
- if (it)
- sp->set_bound (RIGHT, it);
- }
+ extract_item_set (sp, "heads", heads);
+ if (heads.size ())
+ sp->set_bound (RIGHT, heads.back ());
}
}
}
}
+ADD_ACKNOWLEDGER (Extender_engraver, lyric_syllable);
+ADD_TRANSLATOR (Extender_engraver,
+ /* doc */
+ "Create lyric extenders.",
+
+ /* create */
+ "LyricExtender ",
+
+ /* read */
+ "extendersOverRests ",
-ENTER_DESCRIPTION (Extender_engraver,
-/* descr */ "Create lyric extenders",
-/* creats*/ "LyricExtender",
-/* accepts */ "extender-event",
-/* acks */ "lyric-syllable-interface",
-/* reads */ "",
-/* write */ "");
+ /* write */
+ ""
+ );