/*
- multi_measure_rest-engraver.cc -- implement Multi_measure_rest_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- (c) 1998--2005 Jan Nieuwenhuizen <janneke@gnu.org>
- Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ Copyright (C) 1998--2015 Jan Nieuwenhuizen <janneke@gnu.org>
+ 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 "multi-measure-rest.hh"
#include "engraver-group.hh"
#include "side-position-interface.hh"
#include "staff-symbol-referencer.hh"
+#include "stream-event.hh"
#include "moment.hh"
+#include "spanner.hh"
+
+#include "translator.icc"
/**
The name says it all: make multi measure rests
TRANSLATOR_DECLARATIONS (Multi_measure_rest_engraver);
protected:
- virtual bool try_music (Music *);
void process_music ();
- void stop_translation_timestep ();
void start_translation_timestep ();
- virtual void finalize ();
+ void listen_multi_measure_rest (Stream_event *);
+ void listen_multi_measure_text (Stream_event *);
private:
- Music *rest_ev_;
- Link_array<Music> text_events_;
- int start_measure_;
- Rational last_main_moment_;
- Moment stop_moment_;
+ void add_bound_item_to_grobs (Item *);
+ void clear_lapsed_events (const Moment &now);
+ bool grobs_initialized () const { return mmrest_; }
+ void initialize_grobs ();
+ void reset_grobs ();
+ void set_measure_count (int n);
- bool bar_seen_;
- Item *last_command_item_;
- Spanner *last_rest_;
+private:
+ vector<Stream_event *> text_events_;
+ // text_[0] is a MultiMeasureRestNumber grob
+ // the rest are optional MultiMeasureRestText grobs
+ vector<Spanner *> text_;
+ Stream_event *rest_ev_;
Spanner *mmrest_;
-
- Link_array<Spanner> numbers_;
- Link_array<Spanner> last_numbers_;
+ Moment stop_moment_;
+ int start_measure_;
+ // Ugh, this is a kludge - need this for multi-measure-rest-grace.ly
+ Item *last_command_item_;
+ bool first_time_;
};
-Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
+Multi_measure_rest_engraver::Multi_measure_rest_engraver (Context *c)
+ : Engraver (c),
+ rest_ev_ (0),
+ mmrest_ (0),
+ start_measure_ (0),
+ last_command_item_ (0),
+ first_time_ (true)
{
- last_command_item_ = 0;
+}
+void
+Multi_measure_rest_engraver::listen_multi_measure_rest (Stream_event *ev)
+{
+ /* FIXME: Should use ASSIGN_EVENT_ONCE. Can't do that yet because of
+ the kill-mm-rests hack in part-combine-iterator. */
+ rest_ev_ = ev;
+ const Moment now (now_mom ());
+ stop_moment_ = now + get_event_length (rest_ev_, now);
/*
- For the start of a score.
+ if (ASSIGN_EVENT_ONCE (rest_ev_, ev))
+ stop_moment_ = now_mom () + get_event_length (rest_ev_);
*/
- bar_seen_ = true;
- start_measure_ = 0;
- mmrest_ = 0;
- last_rest_ = 0;
- rest_ev_ = 0;
+
+ clear_lapsed_events (now);
}
-bool
-Multi_measure_rest_engraver::try_music (Music *event)
+void
+Multi_measure_rest_engraver::listen_multi_measure_text (Stream_event *ev)
{
- if (event->is_mus_type ("multi-measure-rest-event"))
- {
- rest_ev_ = event;
- stop_moment_ = now_mom () + rest_ev_->get_length ();
+ text_events_.push_back (ev);
+}
- return true;
- }
- else if (event->is_mus_type ("multi-measure-text-event"))
- {
- text_events_.push (event);
- return true;
- }
- return false;
+void
+Multi_measure_rest_engraver::add_bound_item_to_grobs (Item *item)
+{
+ add_bound_item (mmrest_, item);
+ for (vsize i = 0; i < text_.size (); ++i)
+ add_bound_item (text_[i], item);
}
void
-Multi_measure_rest_engraver::process_music ()
+Multi_measure_rest_engraver::clear_lapsed_events (const Moment &now)
{
- if (rest_ev_ && !mmrest_
- && stop_moment_ > now_mom ())
+ if (now.main_part_ >= stop_moment_.main_part_)
{
- mmrest_ = make_spanner ("MultiMeasureRest", rest_ev_->self_scm ());
-
- Spanner *sp
- = make_spanner ("MultiMeasureRestNumber", rest_ev_->self_scm ());
- numbers_.push (sp);
-
- if (text_events_.size ())
- {
- for (int i = 0; i < text_events_.size (); i++)
- {
-
- Music *e = text_events_[i];
- Spanner *sp
- = make_spanner ("MultiMeasureRestText", e->self_scm ());
- SCM t = e->get_property ("text");
- SCM dir = e->get_property ("direction");
- sp->set_property ("text", t);
- if (is_direction (dir))
- sp->set_property ("direction", dir);
-
- numbers_.push (sp);
- }
-
- /*
- Stack different scripts.
- */
- Direction d = DOWN;
- do
- {
- Grob *last = 0;
- for (int i = 0; i < numbers_.size (); i++)
- {
- if (scm_from_int (d) == numbers_[i]->get_property ("direction"))
- {
- if (last)
- Side_position_interface::add_support (numbers_[i], last);
- last = numbers_[i];
- }
- }
- }
- while (flip (&d) != DOWN);
- }
-
- for (int i = 0; i < numbers_.size (); i++)
- {
- Side_position_interface::add_support (numbers_[i], mmrest_);
- numbers_[i]->set_parent (mmrest_, Y_AXIS);
- }
-
- start_measure_
- = scm_to_int (get_property ("currentBarNumber"));
+ rest_ev_ = 0;
+ text_events_.clear ();
}
-
- bar_seen_ = bar_seen_ || scm_is_string (get_property ("whichBar"));
}
void
-Multi_measure_rest_engraver::stop_translation_timestep ()
+Multi_measure_rest_engraver::initialize_grobs ()
{
- /* We cannot do this earlier, as breakableSeparationItem is not yet
- there. */
- if (bar_seen_)
+ mmrest_ = make_spanner ("MultiMeasureRest", rest_ev_->self_scm ());
+ text_.push_back (make_spanner ("MultiMeasureRestNumber",
+ mmrest_->self_scm ()));
+
+ if (text_events_.size ())
{
- Grob *cmc = unsmob_grob (get_property ("breakableSeparationItem"));
- if (!cmc)
- cmc = unsmob_grob (get_property ("currentCommandColumn"));
+ for (vsize i = 0; i < text_events_.size (); i++)
+ {
+ Stream_event *e = text_events_[i];
+ Spanner *sp = make_spanner ("MultiMeasureRestText", e->self_scm ());
+ SCM t = e->get_property ("text");
+ SCM dir = e->get_property ("direction");
+ sp->set_property ("text", t);
+ if (is_direction (dir))
+ sp->set_property ("direction", dir);
+
+ text_.push_back (sp);
+ }
- /* Ugh, this is a kludge - need this for multi-measure-rest-grace.ly */
- last_command_item_ = dynamic_cast<Item *> (cmc);
+ /*
+ Stack different scripts.
+ */
+ for (DOWN_and_UP (d))
+ {
+ SCM dir = scm_from_int (d);
+ Grob *last = 0;
+ for (vsize i = 0; i < text_.size (); i++)
+ {
+ if (ly_is_equal (dir, text_[i]->get_property ("direction")))
+ {
+ if (last)
+ Side_position_interface::add_support (text_[i], last);
+ last = text_[i];
+ }
+ }
+ }
}
- if (last_command_item_ && (mmrest_ || last_rest_))
+ for (vsize i = 0; i < text_.size (); i++)
{
- if (last_rest_)
- {
- add_bound_item (last_rest_, last_command_item_);
- for (int i = 0; i < last_numbers_.size (); i++)
- add_bound_item (last_numbers_[i], last_command_item_);
- }
-
- if (mmrest_)
- {
- add_bound_item (mmrest_, last_command_item_);
- for (int i = 0; i < numbers_.size (); i++)
- add_bound_item (numbers_[i], last_command_item_);
-
- last_command_item_ = 0;
- }
+ Side_position_interface::add_support (text_[i], mmrest_);
+ text_[i]->set_parent (mmrest_, Y_AXIS);
+ text_[i]->set_parent (mmrest_, X_AXIS);
}
+}
+
+void
+Multi_measure_rest_engraver::reset_grobs ()
+{
+ text_.clear ();
+ mmrest_ = 0;
+}
+
+void
+Multi_measure_rest_engraver::set_measure_count (int n)
+{
+ SCM n_scm = scm_from_int (n);
+ assert (mmrest_);
+ mmrest_->set_property ("measure-count", n_scm);
- Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
- if (last_rest_)
+ Grob *g = text_[0]; // the MultiMeasureRestNumber
+ assert (g);
+ if (scm_is_null (g->get_property ("text")))
{
- last_rest_ = 0;
- last_numbers_.clear ();
+ SCM thres = get_property ("restNumberThreshold");
+ int t = 1;
+ if (scm_is_number (thres))
+ t = scm_to_int (thres);
+
+ if (n <= t)
+ g->suicide ();
+ else
+ {
+ SCM text = scm_number_to_string (n_scm, scm_from_int (10));
+ g->set_property ("text", text);
+ }
}
-
- text_events_.clear ();
- bar_seen_ = false;
}
void
-Multi_measure_rest_engraver::start_translation_timestep ()
+Multi_measure_rest_engraver::process_music ()
{
- if (now_mom ().main_part_ >= stop_moment_.main_part_)
- rest_ev_ = 0;
+ const bool measure_end
+ = scm_is_string (get_property ("whichBar"))
+ && (robust_scm2moment (get_property ("measurePosition"),
+ Moment (0)).main_part_ == Rational (0));
- Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
+ if (measure_end || first_time_)
+ {
+ last_command_item_ = unsmob<Item> (get_property ("currentCommandColumn"));
+
+ // Finalize the current grobs.
+ if (grobs_initialized ())
+ {
+ int curr_measure = scm_to_int (get_property ("internalBarNumber"));
+ set_measure_count (curr_measure - start_measure_);
+ if (last_command_item_)
+ add_bound_item_to_grobs (last_command_item_);
+ reset_grobs ();
+ }
+ }
- Moment now = now_mom ();
- if (mmrest_
- && now.main_part_ != last_main_moment_
- && mp.main_part_ == Rational (0))
+ // Create new grobs if a rest event is (still) active.
+ if (!grobs_initialized () && rest_ev_)
{
- last_rest_ = mmrest_;
- last_numbers_ = numbers_;
+ initialize_grobs ();
+ text_events_.clear ();
- int cur = scm_to_int (get_property ("currentBarNumber"));
- int num = cur - start_measure_;
+ if (last_command_item_)
+ {
+ add_bound_item_to_grobs (last_command_item_);
+ last_command_item_ = 0;
+ }
- /*
- We can't plug a markup directly into the grob, since the
- measure-count determines the formatting of the mmrest.
- */
- last_rest_->set_property ("measure-count", scm_from_int (num));
-
- SCM sml = get_property ("measureLength");
- Rational ml = (unsmob_moment (sml)) ? unsmob_moment (sml)->main_part_ : Rational (1);
- if (ml >= Rational (2))
- last_rest_->set_property ("use-breve-rest", SCM_BOOL_T);
-
- mmrest_ = 0;
- numbers_.clear ();
-
- Grob *last = last_numbers_.size () ? last_numbers_[0] : 0;
- if (last && last->get_property ("text") == SCM_EOL)
- {
- SCM thres = get_property ("restNumberThreshold");
- int t = 1;
- if (scm_is_number (thres))
- t = scm_to_int (thres);
-
- if (num <= t)
- last->suicide ();
- else
- {
- SCM text
- = scm_number_to_string (scm_from_int (num), scm_from_int (10));
- last->set_property ("text", text);
- }
- }
+ start_measure_ = scm_to_int (get_property ("internalBarNumber"));
}
- last_main_moment_ = now.main_part_;
+ first_time_ = false;
}
void
-Multi_measure_rest_engraver::finalize ()
+Multi_measure_rest_engraver::start_translation_timestep ()
{
+ clear_lapsed_events (now_mom ());
}
-#include "translator.icc"
+void
+Multi_measure_rest_engraver::boot ()
+{
+ ADD_LISTENER (Multi_measure_rest_engraver, multi_measure_rest);
+ ADD_LISTENER (Multi_measure_rest_engraver, multi_measure_text);
+}
ADD_TRANSLATOR (Multi_measure_rest_engraver,
- /* doc */
- "Engraves multi-measure rests that are produced with @code{R}. Reads "
- "measurePosition and currentBarNumber to determine what number to print "
- "over the MultiMeasureRest. Reads measureLength to determine if it "
- "should use a whole rest or a breve rest to represent 1 measure ",
- /* create */ "MultiMeasureRest MultiMeasureRestNumber MultiMeasureRestText",
- /* accept */ "multi-measure-rest-event multi-measure-text-event",
- /* read */
- "currentBarNumber "
- "restNumberThreshold "
- "breakableSeparationItem "
- "currentCommandColumn "
- "measurePosition "
- "measureLength",
- /* write */ "");
+ /* doc */
+ "Engrave multi-measure rests that are produced with"
+ " @samp{R}. It reads @code{measurePosition} and"
+ " @code{internalBarNumber} to determine what number to print"
+ " over the @ref{MultiMeasureRest}.",
+
+ /* create */
+ "MultiMeasureRest "
+ "MultiMeasureRestNumber "
+ "MultiMeasureRestText ",
+
+ /* read */
+ "internalBarNumber "
+ "restNumberThreshold "
+ "currentCommandColumn "
+ "measurePosition "
+ "whichBar ",
+
+ /* write */
+ ""
+ );
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