2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1998--2015 Jan Nieuwenhuizen <janneke@gnu.org>
5 Han-Wen Nienhuys <hanwen@xs4all.nl>
7 LilyPond is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 LilyPond is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
21 #include "multi-measure-rest.hh"
22 #include "paper-column.hh"
23 #include "engraver-group.hh"
24 #include "side-position-interface.hh"
25 #include "staff-symbol-referencer.hh"
26 #include "stream-event.hh"
30 #include "translator.icc"
33 The name says it all: make multi measure rests
35 class Multi_measure_rest_engraver : public Engraver
38 TRANSLATOR_DECLARATIONS (Multi_measure_rest_engraver);
41 void process_music ();
42 void start_translation_timestep ();
43 DECLARE_TRANSLATOR_LISTENER (multi_measure_rest);
44 DECLARE_TRANSLATOR_LISTENER (multi_measure_text);
47 void add_bound_item_to_grobs (Item *);
48 void clear_lapsed_events (const Moment &now);
49 bool grobs_initialized () const { return mmrest_; }
50 void initialize_grobs ();
52 void set_measure_count (int n);
55 vector<Stream_event *> text_events_;
56 // text_[0] is a MultiMeasureRestNumber grob
57 // the rest are optional MultiMeasureRestText grobs
58 vector<Spanner *> text_;
59 Stream_event *rest_ev_;
63 // Ugh, this is a kludge - need this for multi-measure-rest-grace.ly
64 Item *last_command_item_;
68 Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
72 last_command_item_ (0),
78 Multi_measure_rest_engraver::listen_multi_measure_rest (Stream_event *ev)
80 /* FIXME: Should use ASSIGN_EVENT_ONCE. Can't do that yet because of
81 the kill-mm-rests hack in part-combine-iterator. */
83 const Moment now (now_mom ());
84 stop_moment_ = now + get_event_length (rest_ev_, now);
86 if (ASSIGN_EVENT_ONCE (rest_ev_, ev))
87 stop_moment_ = now_mom () + get_event_length (rest_ev_);
90 clear_lapsed_events (now);
94 Multi_measure_rest_engraver::listen_multi_measure_text (Stream_event *ev)
96 text_events_.push_back (ev);
100 Multi_measure_rest_engraver::add_bound_item_to_grobs (Item *item)
102 add_bound_item (mmrest_, item);
103 for (vsize i = 0; i < text_.size (); ++i)
104 add_bound_item (text_[i], item);
108 Multi_measure_rest_engraver::clear_lapsed_events (const Moment &now)
110 if (now.main_part_ >= stop_moment_.main_part_)
113 text_events_.clear ();
118 Multi_measure_rest_engraver::initialize_grobs ()
120 mmrest_ = make_spanner ("MultiMeasureRest", rest_ev_->self_scm ());
121 text_.push_back (make_spanner ("MultiMeasureRestNumber",
122 rest_ev_->self_scm ()));
124 if (text_events_.size ())
126 for (vsize i = 0; i < text_events_.size (); i++)
128 Stream_event *e = text_events_[i];
129 Spanner *sp = make_spanner ("MultiMeasureRestText", e->self_scm ());
130 SCM t = e->get_property ("text");
131 SCM dir = e->get_property ("direction");
132 sp->set_property ("text", t);
133 if (is_direction (dir))
134 sp->set_property ("direction", dir);
136 text_.push_back (sp);
140 Stack different scripts.
142 for (DOWN_and_UP (d))
144 SCM dir = scm_from_int (d);
146 for (vsize i = 0; i < text_.size (); i++)
148 if (scm_is_eq (dir, text_[i]->get_property ("direction")))
151 Side_position_interface::add_support (text_[i], last);
158 for (vsize i = 0; i < text_.size (); i++)
160 Side_position_interface::add_support (text_[i], mmrest_);
161 text_[i]->set_parent (mmrest_, Y_AXIS);
162 text_[i]->set_parent (mmrest_, X_AXIS);
167 Multi_measure_rest_engraver::reset_grobs ()
174 Multi_measure_rest_engraver::set_measure_count (int n)
176 SCM n_scm = scm_from_int (n);
178 mmrest_->set_property ("measure-count", n_scm);
180 Grob *g = text_[0]; // the MultiMeasureRestNumber
182 if (scm_is_null (g->get_property ("text")))
184 SCM thres = get_property ("restNumberThreshold");
186 if (scm_is_number (thres))
187 t = scm_to_int (thres);
193 SCM text = scm_number_to_string (n_scm, scm_from_int (10));
194 g->set_property ("text", text);
200 Multi_measure_rest_engraver::process_music ()
202 const bool measure_end
203 = scm_is_string (get_property ("whichBar"))
204 && (robust_scm2moment (get_property ("measurePosition"),
205 Moment (0)).main_part_ == Rational (0));
207 if (measure_end || first_time_)
209 last_command_item_ = unsmob<Item> (get_property ("currentCommandColumn"));
211 // Finalize the current grobs.
212 if (grobs_initialized ())
214 int curr_measure = scm_to_int (get_property ("internalBarNumber"));
215 set_measure_count (curr_measure - start_measure_);
216 if (last_command_item_)
217 add_bound_item_to_grobs (last_command_item_);
222 // Create new grobs if a rest event is (still) active.
223 if (!grobs_initialized () && rest_ev_)
226 text_events_.clear ();
228 if (last_command_item_)
230 add_bound_item_to_grobs (last_command_item_);
231 last_command_item_ = 0;
234 start_measure_ = scm_to_int (get_property ("internalBarNumber"));
241 Multi_measure_rest_engraver::start_translation_timestep ()
243 clear_lapsed_events (now_mom ());
247 Multi_measure_rest_engraver::boot ()
249 ADD_LISTENER (Multi_measure_rest_engraver, multi_measure_rest);
250 ADD_LISTENER (Multi_measure_rest_engraver, multi_measure_text);
253 ADD_TRANSLATOR (Multi_measure_rest_engraver,
255 "Engrave multi-measure rests that are produced with"
256 " @samp{R}. It reads @code{measurePosition} and"
257 " @code{internalBarNumber} to determine what number to print"
258 " over the @ref{MultiMeasureRest}.",
262 "MultiMeasureRestNumber "
263 "MultiMeasureRestText ",
267 "restNumberThreshold "
268 "currentCommandColumn "