/*
- ligature-bracket-engraver.cc -- implement Ligature_bracket_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2002--2015 Juergen Reuter <reuter@ipd.uka.de>
- (c) 2002--2007 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 "ligature-engraver.hh"
+#include "international.hh"
+
+#include "engraver.hh"
#include "note-column.hh"
#include "tuplet-bracket.hh"
#include "spanner.hh"
#include "stream-event.hh"
-#include "spanner.hh"
#include "item.hh"
#include "translator.icc"
-/*
- * 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
+class Ligature_bracket_engraver : public Engraver
{
protected:
- virtual Spanner *create_ligature_spanner ();
- virtual void typeset_ligature (Spanner *ligature,
- vector<Grob_info> primitives);
- DECLARE_ACKNOWLEDGER (rest);
- DECLARE_ACKNOWLEDGER (note_column);
- DECLARE_TRANSLATOR_LISTENER (ligature);
+ 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_;
};
-IMPLEMENT_TRANSLATOR_LISTENER (Ligature_bracket_engraver, ligature);
void
Ligature_bracket_engraver::listen_ligature (Stream_event *ev)
{
- Ligature_engraver::listen_ligature (ev);
+ Direction d = to_dir (ev->get_property ("span-direction"));
+ ASSIGN_EVENT_ONCE (events_drul_[d], ev);
}
Ligature_bracket_engraver::Ligature_bracket_engraver ()
{
-}
-
-Spanner *
-Ligature_bracket_engraver::create_ligature_spanner ()
-{
- 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::typeset_ligature (Spanner *, vector<Grob_info>)
+Ligature_bracket_engraver::process_music ()
{
- // no real ligature to typeset; the LigatureBracket just does it
+ 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 (current_ligature ())
+ if (ligature_)
{
- Tuplet_bracket::add_column (current_ligature (),
- dynamic_cast<Item *> (info.grob ()));
-
- // avoid "junking empty ligature" message by acknowledging dummy
- // note head
- Ligature_engraver::acknowledge_note_head (Grob_info ());
+ Tuplet_bracket::add_column (ligature_,
+ info.item ());
+ add_bound_item (ligature_, info.item ());
}
}
void
Ligature_bracket_engraver::acknowledge_rest (Grob_info info)
{
- if (current_ligature ())
- Ligature_engraver::acknowledge_rest (info);
+ acknowledge_note_column (info);
+}
+
+void
+Ligature_bracket_engraver::stop_translation_timestep ()
+{
+ events_drul_[LEFT]
+ = events_drul_[RIGHT] = 0;
+ finished_ligature_ = 0;
}
-ADD_ACKNOWLEDGER (Ligature_bracket_engraver, rest);
-ADD_ACKNOWLEDGER (Ligature_bracket_engraver, note_column);
+
+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 */ "Handles Ligature_events by engraving Ligature brackets.",
- /* create */ "TupletBracket",
- /* read */ "",
- /* write */ "");
+ /* doc */
+ "Handle @code{Ligature_events} by engraving @code{Ligature}"
+ " brackets.",
+
+ /* create */
+ "LigatureBracket ",
+
+ /* read */
+ "",
+
+ /* write */
+ ""
+ );