2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1998--2011 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 Item *last_command_item_;
60 vector<Spanner *> numbers_;
61 vector<Spanner *> last_numbers_;
64 Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
66 last_command_item_ = 0;
69 For the start of a score.
78 IMPLEMENT_TRANSLATOR_LISTENER (Multi_measure_rest_engraver, multi_measure_rest);
80 Multi_measure_rest_engraver::listen_multi_measure_rest (Stream_event *ev)
82 /* FIXME: Should use ASSIGN_EVENT_ONCE. Can't do that yet because of
83 the kill-mm-rests hack in part-combine-iterator. */
85 stop_moment_ = now_mom () + get_event_length (rest_ev_, now_mom ());
87 if (ASSIGN_EVENT_ONCE (rest_ev_, ev))
88 stop_moment_ = now_mom () + get_event_length (rest_ev_);
92 IMPLEMENT_TRANSLATOR_LISTENER (Multi_measure_rest_engraver, multi_measure_text);
94 Multi_measure_rest_engraver::listen_multi_measure_text (Stream_event *ev)
96 text_events_.push_back (ev);
100 Multi_measure_rest_engraver::process_music ()
102 if (rest_ev_ && !mmrest_
103 && stop_moment_ > now_mom ())
105 mmrest_ = make_spanner ("MultiMeasureRest", rest_ev_->self_scm ());
108 = make_spanner ("MultiMeasureRestNumber", rest_ev_->self_scm ());
109 numbers_.push_back (sp);
111 if (text_events_.size ())
113 for (vsize i = 0; i < text_events_.size (); i++)
115 Stream_event *e = text_events_[i];
117 = make_spanner ("MultiMeasureRestText", e->self_scm ());
118 SCM t = e->get_property ("text");
119 SCM dir = e->get_property ("direction");
120 sp->set_property ("text", t);
121 if (is_direction (dir))
122 sp->set_property ("direction", dir);
124 numbers_.push_back (sp);
128 Stack different scripts.
134 for (vsize i = 0; i < numbers_.size (); i++)
136 if (scm_from_int (d) == numbers_[i]->get_property ("direction"))
139 Side_position_interface::add_support (numbers_[i], last);
144 while (flip (&d) != DOWN);
147 for (vsize i = 0; i < numbers_.size (); i++)
149 Side_position_interface::add_support (numbers_[i], mmrest_);
150 numbers_[i]->set_parent (mmrest_, Y_AXIS);
154 = scm_to_int (get_property ("internalBarNumber"));
157 bar_seen_ = bar_seen_ || scm_is_string (get_property ("whichBar"));
161 Multi_measure_rest_engraver::stop_translation_timestep ()
163 /* We cannot do this earlier, as breakableSeparationItem is not yet
166 Actually, we no longer use breakableSeparationItem -- should this be moved?
170 Grob *cmc = unsmob_grob (get_property ("currentCommandColumn"));
172 /* Ugh, this is a kludge - need this for multi-measure-rest-grace.ly */
173 last_command_item_ = dynamic_cast<Item *> (cmc);
176 if (last_command_item_ && (mmrest_ || last_rest_))
180 add_bound_item (last_rest_, last_command_item_);
181 for (vsize i = 0; i < last_numbers_.size (); i++)
182 add_bound_item (last_numbers_[i], last_command_item_);
187 add_bound_item (mmrest_, last_command_item_);
188 for (vsize i = 0; i < numbers_.size (); i++)
189 add_bound_item (numbers_[i], last_command_item_);
191 last_command_item_ = 0;
195 Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
199 last_numbers_.clear ();
202 text_events_.clear ();
207 Multi_measure_rest_engraver::start_translation_timestep ()
209 if (now_mom ().main_part_ >= stop_moment_.main_part_)
212 Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
214 Moment now = now_mom ();
216 && now.main_part_ != last_main_moment_
217 && mp.main_part_ == Rational (0))
219 last_rest_ = mmrest_;
220 last_numbers_ = numbers_;
222 int cur = scm_to_int (get_property ("internalBarNumber"));
223 int num = cur - start_measure_;
226 We can't plug a markup directly into the grob, since the
227 measure-count determines the formatting of the mmrest.
229 last_rest_->set_property ("measure-count", scm_from_int (num));
234 Grob *last = last_numbers_.size () ? last_numbers_[0] : 0;
235 if (last && last->get_property ("text") == SCM_EOL)
237 SCM thres = get_property ("restNumberThreshold");
239 if (scm_is_number (thres))
240 t = scm_to_int (thres);
247 = scm_number_to_string (scm_from_int (num), scm_from_int (10));
248 last->set_property ("text", text);
253 last_main_moment_ = now.main_part_;
257 Multi_measure_rest_engraver::finalize ()
261 ADD_TRANSLATOR (Multi_measure_rest_engraver,
263 "Engrave multi-measure rests that are produced with"
264 " @samp{R}. It reads @code{measurePosition} and"
265 " @code{internalBarNumber} to determine what number to print"
266 " over the @ref{MultiMeasureRest}.",
270 "MultiMeasureRestNumber "
271 "MultiMeasureRestText ",
275 "restNumberThreshold "
276 "currentCommandColumn "