-/*
- ligature-bracket-engraver.cc -- implement Ligature_bracket_engraver
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2002--2004 Juergen Reuter <reuter@ipd.uka.de>
-
- */
-#include "ligature-engraver.hh"
+/*
+ This file is part of LilyPond, the GNU music typesetter.
+
+ Copyright (C) 2002--2015 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 "engraver.hh"
#include "note-column.hh"
#include "tuplet-bracket.hh"
#include "spanner.hh"
+#include "stream-event.hh"
+#include "item.hh"
-/*
- * This engraver marks ligatures of any kind by just printing a
- * horizontal square bracket on top of each ligature. See class
- * Ligature_engraver for more information on the interaction between
- * this class and its superclass.
- */
-class Ligature_bracket_engraver : public Ligature_engraver
+#include "translator.icc"
+
+class Ligature_bracket_engraver : public Engraver
{
protected:
- virtual Spanner *create_ligature_spanner ();
- virtual void acknowledge_grob (Grob_info);
+ virtual void process_music ();
+ virtual void stop_translation_timestep ();
+ void acknowledge_rest (Grob_info);
+ void acknowledge_note_column (Grob_info);
+ void listen_ligature (Stream_event *);
public:
TRANSLATOR_DECLARATIONS (Ligature_bracket_engraver);
-};
+private:
+ Drul_array<Stream_event *> events_drul_;
+ Spanner *finished_ligature_;
+ Spanner *ligature_;
+ Stream_event *previous_start_event_;
+};
-Ligature_bracket_engraver::Ligature_bracket_engraver ()
+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);
}
-Spanner *
-Ligature_bracket_engraver::create_ligature_spanner ()
+Ligature_bracket_engraver::Ligature_bracket_engraver (Context *c)
+ : Engraver (c)
{
- return make_spanner ("LigatureBracket", SCM_EOL);
+ 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_grob (Grob_info info)
+Ligature_bracket_engraver::acknowledge_note_column (Grob_info info)
{
- if (current_ligature ())
+ if (ligature_)
{
- if (Note_column::has_interface (info.grob_))
- {
- Tuplet_bracket::add_column (current_ligature (),
- dynamic_cast<Item*> (info.grob_));
- }
- else Ligature_engraver::acknowledge_grob (info);
+ Tuplet_bracket::add_column (ligature_,
+ info.item ());
+ add_bound_item (ligature_, info.item ());
}
}
-ENTER_DESCRIPTION (Ligature_bracket_engraver,
-/* descr */ "Handles Ligature_events by engraving Ligature brackets.",
-/* creats*/ "TupletBracket",
-/* accepts */ "ligature-event",
-/* acks */ "rest-interface note-column-interface",
-/* reads */ "",
-/* write */ "");
+void
+Ligature_bracket_engraver::acknowledge_rest (Grob_info info)
+{
+ acknowledge_note_column (info);
+}
+
+void
+Ligature_bracket_engraver::stop_translation_timestep ()
+{
+ events_drul_[LEFT]
+ = events_drul_[RIGHT] = 0;
+ finished_ligature_ = 0;
+}
+
+
+void
+Ligature_bracket_engraver::boot ()
+{
+ ADD_LISTENER (Ligature_bracket_engraver, ligature);
+ 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 */
+ ""
+ );