-/*
- ligature-bracket-engraver.cc -- implement Ligature_bracket_engraver
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2002 Juergen Reuter <reuter@ipd.uka.de>
-
- */
+/*
+ This file is part of LilyPond, the GNU music typesetter.
+
+ Copyright (C) 2002--2010 Juergen Reuter <reuter@ipd.uka.de>
+
+ 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 "international.hh"
+
#include "ligature-engraver.hh"
+#include "note-column.hh"
+#include "tuplet-bracket.hh"
+#include "spanner.hh"
+#include "stream-event.hh"
#include "spanner.hh"
+#include "item.hh"
-class Ligature_bracket_engraver : public Ligature_engraver
+#include "translator.icc"
+
+class Ligature_bracket_engraver : public Engraver
{
protected:
- virtual Spanner *create_ligature_spanner ();
-
+ virtual void process_music ();
+ virtual void stop_translation_timestep ();
+ DECLARE_ACKNOWLEDGER (rest);
+ DECLARE_ACKNOWLEDGER (note_column);
+ DECLARE_TRANSLATOR_LISTENER (ligature);
public:
- TRANSLATOR_DECLARATIONS(Ligature_bracket_engraver);
+ TRANSLATOR_DECLARATIONS (Ligature_bracket_engraver);
private:
- void typeset_ligature_bracket ();
+ Drul_array<Stream_event *> events_drul_;
+ Spanner *finished_ligature_;
+ Spanner *ligature_;
+ Stream_event *previous_start_event_;
};
+IMPLEMENT_TRANSLATOR_LISTENER (Ligature_bracket_engraver, ligature);
+void
+Ligature_bracket_engraver::listen_ligature (Stream_event *ev)
+{
+ Direction d = to_dir (ev->get_property ("span-direction"));
+ ASSIGN_EVENT_ONCE (events_drul_[d], ev);
+}
Ligature_bracket_engraver::Ligature_bracket_engraver ()
{
+ ligature_ = 0;
+ finished_ligature_ = 0;
+ events_drul_[LEFT] = events_drul_[RIGHT] = 0;
+ previous_start_event_ = 0;
+}
+
+void
+Ligature_bracket_engraver::process_music()
+{
+ if (events_drul_[STOP])
+ {
+ if (!ligature_)
+ {
+ events_drul_[STOP]->origin ()->warning (_ ("cannot find start of ligature"));
+ return;
+ }
+
+ finished_ligature_ = ligature_;
+ ligature_ = 0;
+ previous_start_event_ = 0;
+ }
+
+ if (events_drul_[START])
+ {
+ if (ligature_)
+ {
+ events_drul_[START]->origin ()->warning (_ ("already have a ligature"));
+ return;
+ }
+
+ previous_start_event_ = events_drul_[START];
+ ligature_ = make_spanner ("LigatureBracket", events_drul_[START]->self_scm ());
+ }
+}
+
+void
+Ligature_bracket_engraver::acknowledge_note_column (Grob_info info)
+{
+ if (ligature_)
+ {
+ Tuplet_bracket::add_column (ligature_,
+ info.item ());
+ add_bound_item (ligature_, info.item());
+ }
+}
+
+void
+Ligature_bracket_engraver::acknowledge_rest (Grob_info info)
+{
+ acknowledge_note_column(info);
}
-Spanner *
-Ligature_bracket_engraver::create_ligature_spanner ()
+
+void
+Ligature_bracket_engraver::stop_translation_timestep ()
{
- return new Spanner (get_property ("LigatureBracket"));
+ events_drul_[LEFT] =
+ events_drul_[RIGHT] = 0;
+ finished_ligature_ = 0;
}
-ENTER_DESCRIPTION(Ligature_bracket_engraver,
-/* descr */ "Handles Ligature_requests by engraving Ligature brackets.",
-/* creats*/ "LigatureBracket",
-/* acks */ "ligature-head-interface rest-interface",
-/* reads */ "",
-/* write */ "");
+ADD_ACKNOWLEDGER (Ligature_bracket_engraver, rest);
+ADD_ACKNOWLEDGER (Ligature_bracket_engraver, note_column);
+
+ADD_TRANSLATOR (Ligature_bracket_engraver,
+ /* doc */
+ "Handle @code{Ligature_events} by engraving @code{Ligature}"
+ " brackets.",
+
+ /* create */
+ "LigatureBracket ",
+
+ /* read */
+ "",
+
+ /* write */
+ ""
+ );