/*
- multi_measure_rest-engraver.cc -- implement Multi_measure_rest_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- (c) 1998--2000 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 "proto.hh"
-#include "musical-request.hh"
#include "multi-measure-rest.hh"
#include "paper-column.hh"
-#include "engraver-group-engraver.hh"
-#include "bar.hh"
+#include "engraver-group.hh"
+#include "side-position-interface.hh"
#include "staff-symbol-referencer.hh"
-#include "engraver.hh"
+#include "stream-event.hh"
#include "moment.hh"
#include "spanner.hh"
+#include "translator.icc"
+
/**
- The name says it all: make multi measure rests
- */
+ The name says it all: make multi measure rests
+*/
class Multi_measure_rest_engraver : public Engraver
{
public:
- VIRTUAL_COPY_CONS(Translator);
- Multi_measure_rest_engraver ();
+ TRANSLATOR_DECLARATIONS (Multi_measure_rest_engraver);
protected:
- virtual void acknowledge_element (Score_element_info i);
- virtual void do_process_music ();
- virtual bool do_try_music (Music*);
- virtual void do_pre_move_processing ();
- virtual void do_post_move_processing ();
- virtual void do_removal_processing ();
+ void process_music ();
+ void start_translation_timestep ();
+ void listen_multi_measure_rest (Stream_event *);
+ void listen_multi_measure_text (Stream_event *);
+
private:
- Span_req * new_req_l_;
- Span_req * busy_span_req_l_;
- Span_req * stop_req_l_;
- int start_measure_i_;
- Moment start_moment_;
-
- Spanner *mmrest_p_;
- Spanner *lastrest_p_;
+ 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);
+
+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_;
+ 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_;
};
-ADD_THIS_TRANSLATOR (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)
+{
+}
-Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
+void
+Multi_measure_rest_engraver::listen_multi_measure_rest (Stream_event *ev)
{
- start_measure_i_ = 0;
- mmrest_p_ = lastrest_p_ =0;
- new_req_l_ = busy_span_req_l_ = stop_req_l_ =0;
+ /* 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);
+ /*
+ if (ASSIGN_EVENT_ONCE (rest_ev_, ev))
+ stop_moment_ = now_mom () + get_event_length (rest_ev_);
+ */
+
+ clear_lapsed_events (now);
}
void
-Multi_measure_rest_engraver::acknowledge_element (Score_element_info i)
+Multi_measure_rest_engraver::listen_multi_measure_text (Stream_event *ev)
{
- Item * item = dynamic_cast<Item*> (i.elem_l_);
- if (item && Bar::has_interface (item))
- {
- if (mmrest_p_)
- Multi_measure_rest::add_column (mmrest_p_,item);
- if (lastrest_p_)
- Multi_measure_rest::add_column (lastrest_p_,item);
- }
+ text_events_.push_back (ev);
+}
+
+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);
}
-bool
-Multi_measure_rest_engraver::do_try_music (Music* req_l)
+void
+Multi_measure_rest_engraver::clear_lapsed_events (const Moment &now)
{
- if (Span_req * sp = dynamic_cast<Span_req*> (req_l))
+ if (now.main_part_ >= stop_moment_.main_part_)
{
- if (sp->span_type_str_ == "rest")
- {
- if (sp->span_dir_ == STOP)
- {
- stop_req_l_ = sp;
- }
- else if (sp->span_dir_ == START && !new_req_l_)
- {
- new_req_l_ = sp;
- }
- return true;
- }
+ rest_ev_ = 0;
+ text_events_.clear ();
}
- return false;
}
-
-
void
-Multi_measure_rest_engraver::do_process_music ()
+Multi_measure_rest_engraver::initialize_grobs ()
{
- if (new_req_l_ && stop_req_l_)
- stop_req_l_ = 0;
-
- if (new_req_l_)
- start_moment_ = now_mom ();
+ mmrest_ = make_spanner ("MultiMeasureRest", rest_ev_->self_scm ());
+ text_.push_back (make_spanner ("MultiMeasureRestNumber",
+ mmrest_->self_scm ()));
- if (stop_req_l_)
+ if (text_events_.size ())
{
- busy_span_req_l_ =0;
- stop_req_l_ = 0;
+ 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);
+ }
+
+ /*
+ 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 (new_req_l_)
+
+ for (vsize i = 0; i < text_.size (); i++)
{
- busy_span_req_l_ = new_req_l_;
- new_req_l_ =0;
+ Side_position_interface::add_support (text_[i], mmrest_);
+ text_[i]->set_parent (mmrest_, Y_AXIS);
+ text_[i]->set_parent (mmrest_, X_AXIS);
}
+}
- if (busy_span_req_l_ && !mmrest_p_)
- {
- mmrest_p_ = new Spanner (get_property ("basicMultiMeasureRestProperties"));
+void
+Multi_measure_rest_engraver::reset_grobs ()
+{
+ text_.clear ();
+ mmrest_ = 0;
+}
- Multi_measure_rest::set_interface (mmrest_p_);
- Staff_symbol_referencer::set_interface (mmrest_p_);
+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);
+
+ Grob *g = text_[0]; // the MultiMeasureRestNumber
+ assert (g);
+ if (scm_is_null (g->get_property ("text")))
+ {
+ SCM thres = get_property ("restNumberThreshold");
+ int t = 1;
+ if (scm_is_number (thres))
+ t = scm_to_int (thres);
- announce_element (Score_element_info (mmrest_p_, busy_span_req_l_));
- start_measure_i_
- = gh_scm2int (get_property ("currentBarNumber"));
+ if (n <= t)
+ g->suicide ();
+ else
+ {
+ SCM text = scm_number_to_string (n_scm, scm_from_int (10));
+ g->set_property ("text", text);
+ }
}
}
void
-Multi_measure_rest_engraver::do_pre_move_processing ()
+Multi_measure_rest_engraver::process_music ()
{
- SCM smp = get_property ("measurePosition");
- Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+ const bool measure_end
+ = scm_is_string (get_property ("whichBar"))
+ && (robust_scm2moment (get_property ("measurePosition"),
+ Moment (0)).main_part_ == Rational (0));
- if (mmrest_p_ && (now_mom () >= start_moment_)
- && !mp
- && (scm_ilength (mmrest_p_->get_elt_property ("columns")) >= 2))
- {
- typeset_element (mmrest_p_);
- /*
- must keep mmrest_p_ around to set measures_i_
- */
- }
- if (lastrest_p_)
+ if (measure_end || first_time_)
{
- typeset_element (lastrest_p_);
- lastrest_p_ = 0;
+ 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 ();
+ }
}
- if (new_req_l_)
+ // Create new grobs if a rest event is (still) active.
+ if (!grobs_initialized () && rest_ev_)
{
- busy_span_req_l_ = new_req_l_;
- new_req_l_ =0;
+ initialize_grobs ();
+ text_events_.clear ();
+
+ if (last_command_item_)
+ {
+ add_bound_item_to_grobs (last_command_item_);
+ last_command_item_ = 0;
+ }
+
+ start_measure_ = scm_to_int (get_property ("internalBarNumber"));
}
-
+
+ first_time_ = false;
}
void
-Multi_measure_rest_engraver::do_post_move_processing ()
+Multi_measure_rest_engraver::start_translation_timestep ()
{
- Moment now (now_mom ());
-
-
- SCM smp = get_property ("measurePosition");
- Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
-
- if (mmrest_p_ && !mp)
- {
- lastrest_p_ = mmrest_p_;
- int cur = gh_scm2int (get_property ("currentBarNumber"));
- lastrest_p_->set_elt_property ("measure-count",
- gh_int2scm (cur - start_measure_i_));
- mmrest_p_ = 0;
- }
+ clear_lapsed_events (now_mom ());
}
-
void
-Multi_measure_rest_engraver::do_removal_processing ()
+Multi_measure_rest_engraver::boot ()
{
- if (mmrest_p_)
- typeset_element (mmrest_p_);
- if (lastrest_p_)
- typeset_element (lastrest_p_);
+ 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 */
+ "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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