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 stop_translation_timestep ();
43 void start_translation_timestep ();
44 virtual void finalize ();
45 DECLARE_TRANSLATOR_LISTENER (multi_measure_rest);
46 DECLARE_TRANSLATOR_LISTENER (multi_measure_text);
49 Stream_event *rest_ev_;
50 vector<Stream_event *> text_events_;
52 Rational last_main_moment_;
56 // Ugh, this is a kludge - need this for multi-measure-rest-grace.ly
57 Item *last_command_item_;
61 // text_[0] is a MultiMeasureRestNumber grob
62 // the rest are optional MultiMeasureRestText grobs
63 vector<Spanner *> text_;
64 vector<Spanner *> last_text_;
67 Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
69 last_command_item_ = 0;
72 For the start of a score.
81 IMPLEMENT_TRANSLATOR_LISTENER (Multi_measure_rest_engraver, multi_measure_rest);
83 Multi_measure_rest_engraver::listen_multi_measure_rest (Stream_event *ev)
85 /* FIXME: Should use ASSIGN_EVENT_ONCE. Can't do that yet because of
86 the kill-mm-rests hack in part-combine-iterator. */
88 stop_moment_ = now_mom () + get_event_length (rest_ev_, now_mom ());
90 if (ASSIGN_EVENT_ONCE (rest_ev_, ev))
91 stop_moment_ = now_mom () + get_event_length (rest_ev_);
95 IMPLEMENT_TRANSLATOR_LISTENER (Multi_measure_rest_engraver, multi_measure_text);
97 Multi_measure_rest_engraver::listen_multi_measure_text (Stream_event *ev)
99 text_events_.push_back (ev);
103 Multi_measure_rest_engraver::process_music ()
105 if (rest_ev_ && !mmrest_
106 && stop_moment_ > now_mom ())
108 mmrest_ = make_spanner ("MultiMeasureRest", rest_ev_->self_scm ());
111 = make_spanner ("MultiMeasureRestNumber", rest_ev_->self_scm ());
112 text_.push_back (sp);
114 if (text_events_.size ())
116 for (vsize i = 0; i < text_events_.size (); i++)
118 Stream_event *e = text_events_[i];
120 = make_spanner ("MultiMeasureRestText", e->self_scm ());
121 SCM t = e->get_property ("text");
122 SCM dir = e->get_property ("direction");
123 sp->set_property ("text", t);
124 if (is_direction (dir))
125 sp->set_property ("direction", dir);
127 text_.push_back (sp);
131 Stack different scripts.
133 for (DOWN_and_UP (d))
136 for (vsize i = 0; i < text_.size (); i++)
138 if (scm_is_eq (scm_from_int (d),
139 text_[i]->get_property ("direction")))
142 Side_position_interface::add_support (text_[i], last);
149 for (vsize i = 0; i < text_.size (); i++)
151 Side_position_interface::add_support (text_[i], mmrest_);
152 text_[i]->set_parent (mmrest_, Y_AXIS);
153 text_[i]->set_parent (mmrest_, X_AXIS);
157 = scm_to_int (get_property ("internalBarNumber"));
160 bar_seen_ = bar_seen_ || scm_is_string (get_property ("whichBar"));
164 Multi_measure_rest_engraver::stop_translation_timestep ()
166 /* We cannot do this earlier, as breakableSeparationItem is not yet
169 Actually, we no longer use breakableSeparationItem -- should this be moved?
173 Grob *cmc = unsmob<Grob> (get_property ("currentCommandColumn"));
174 last_command_item_ = dynamic_cast<Item *> (cmc);
177 if (last_command_item_ && (mmrest_ || last_rest_))
181 add_bound_item (last_rest_, last_command_item_);
182 for (vsize i = 0; i < last_text_.size (); i++)
183 add_bound_item (last_text_[i], last_command_item_);
188 add_bound_item (mmrest_, last_command_item_);
189 for (vsize i = 0; i < text_.size (); i++)
190 add_bound_item (text_[i], last_command_item_);
192 last_command_item_ = 0;
196 Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
203 text_events_.clear ();
208 Multi_measure_rest_engraver::start_translation_timestep ()
210 if (now_mom ().main_part_ >= stop_moment_.main_part_)
213 Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
215 Moment now = now_mom ();
217 && now.main_part_ != last_main_moment_
218 && mp.main_part_ == Rational (0))
220 last_rest_ = mmrest_;
223 int cur = scm_to_int (get_property ("internalBarNumber"));
224 int num = cur - start_measure_;
227 We can't plug a markup directly into the grob, since the
228 measure-count determines the formatting of the mmrest.
230 last_rest_->set_property ("measure-count", scm_from_int (num));
235 Grob *g = last_text_.size () ? last_text_[0] : 0;
236 if (g && scm_is_null (g->get_property ("text")))
238 SCM thres = get_property ("restNumberThreshold");
240 if (scm_is_number (thres))
241 t = scm_to_int (thres);
248 = scm_number_to_string (scm_from_int (num), scm_from_int (10));
249 g->set_property ("text", text);
254 last_main_moment_ = now.main_part_;
258 Multi_measure_rest_engraver::finalize ()
262 ADD_TRANSLATOR (Multi_measure_rest_engraver,
264 "Engrave multi-measure rests that are produced with"
265 " @samp{R}. It reads @code{measurePosition} and"
266 " @code{internalBarNumber} to determine what number to print"
267 " over the @ref{MultiMeasureRest}.",
271 "MultiMeasureRestNumber "
272 "MultiMeasureRestText ",
276 "restNumberThreshold "
277 "currentCommandColumn "