/*
- rest-collision-engraver.cc -- implement Rest_collision_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ 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 <list>
+#include <set>
#include "duration.hh"
#include "engraver.hh"
+#include "international.hh"
#include "item.hh"
#include "moment.hh"
#include "note-column.hh"
+#include "paper-column.hh"
+#include "rest.hh"
#include "rest-collision.hh"
+#include "rhythmic-head.hh"
#include "stream-event.hh"
#include "warn.hh"
+#include "translator.icc"
+
class Rest_collision_engraver : public Engraver
{
- Item *rest_collision_;
- vsize rest_count_;
- list<pair<Grob*, Moment> > note_columns_;
protected:
- DECLARE_ACKNOWLEDGER (note_column);
+ Grob *rest_collision_;
+
void process_acknowledged ();
void stop_translation_timestep ();
- void start_translation_timestep ();
public:
TRANSLATOR_DECLARATIONS (Rest_collision_engraver);
};
-Rest_collision_engraver::Rest_collision_engraver ()
+Rest_collision_engraver::Rest_collision_engraver (Context *c)
+ : Engraver (c)
{
rest_collision_ = 0;
- rest_count_ = 0;
}
void
Rest_collision_engraver::process_acknowledged ()
{
- if (rest_collision_
- || note_columns_.empty ()
- || !rest_count_
- || (note_columns_.size () == rest_count_
- && rest_count_ < 2))
- return;
-
- rest_collision_ = make_item ("RestCollision", SCM_EOL);
-
- list<pair<Grob*, Moment> >::iterator i;
- for (i = note_columns_.begin (); i != note_columns_.end (); i++)
- Rest_collision::add_column (rest_collision_, i->first);
-}
+ vsize rest_count = 0;
+ set<Grob *> columns;
+ Moment now = now_mom ();
-void
-Rest_collision_engraver::acknowledge_note_column (Grob_info i)
-{
- Moment end = now_mom ();
- if (Note_column::has_rests (i.grob ()))
- rest_count_++;
- else
+ for (SCM s = get_property ("busyGrobs"); scm_is_pair (s); s = scm_cdr (s))
{
- // We only keep track of ending moments for columns with notes.
- // It is safe to add a column with notes to multiple RestCollisions, but
- // it might not be safe to add a column with rests to multiple RestCollisions.
- Grob *stem = Note_column::get_stem (i.grob ());
- Stream_event *ev = stem ? stem->event_cause () : 0;
- Duration *dur_ptr = ev ? unsmob_duration (ev->get_property ("duration")) : 0;
- if (dur_ptr)
- {
- if (end.grace_part_)
- end.grace_part_ += dur_ptr->get_length ();
- else
- end.main_part_ += dur_ptr->get_length ();
- }
+ Grob *g = unsmob<Grob> (scm_cdar (s));
+ Moment *m = unsmob<Moment> (scm_caar (s));
+ if (!g || !m)
+ continue;
+
+ if (has_interface<Rhythmic_head> (g) && (*m) > now)
+ {
+ Grob *column = g->get_parent (X_AXIS);
+ if (!column)
+ continue;
+
+ // Only include rests that start now. Include notes that started any time.
+ Paper_column *paper_column = dynamic_cast<Item *> (column)->get_column ();
+ if (!has_interface<Rest> (g) || !paper_column || Paper_column::when_mom (paper_column) == now)
+ {
+ columns.insert (column);
+ rest_count += Note_column::has_rests (column);
+ }
+ }
+ }
+
+ if (!rest_collision_ && rest_count && columns.size () > 1)
+ {
+ rest_collision_ = make_item ("RestCollision", SCM_EOL);
+ for (set<Grob *>::iterator i = columns.begin (); i != columns.end (); ++i)
+ Rest_collision::add_column (rest_collision_, *i);
}
- note_columns_.push_back (pair<Grob*, Moment> (i.grob (), end));
}
void
Rest_collision_engraver::stop_translation_timestep ()
{
rest_collision_ = 0;
- rest_count_ = 0;
}
void
-Rest_collision_engraver::start_translation_timestep ()
+Rest_collision_engraver::boot ()
{
- list<pair<Grob*, Moment> >::iterator i = note_columns_.begin ();
- while (i != note_columns_.end ())
- {
- if (i->second <= now_mom ())
- i = note_columns_.erase (i);
- else
- i++;
- }
-}
-#include "translator.icc"
+}
-ADD_ACKNOWLEDGER (Rest_collision_engraver, note_column);
ADD_TRANSLATOR (Rest_collision_engraver,
- /* doc */
- "Handle collisions of rests.",
+ /* doc */
+ "Handle collisions of rests.",
- /* create */
- "RestCollision ",
+ /* create */
+ "RestCollision ",
- /* read */
- "",
+ /* read */
+ "busyGrobs ",
- /* write */
- ""
- );
+ /* write */
+ ""
+ );