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"
35 The name says it all: make multi measure rests
37 class Multi_measure_rest_engraver : public Engraver
40 TRANSLATOR_DECLARATIONS (Multi_measure_rest_engraver);
43 void process_music ();
44 void stop_translation_timestep ();
45 void start_translation_timestep ();
46 virtual void finalize ();
47 DECLARE_TRANSLATOR_LISTENER (multi_measure_rest);
48 DECLARE_TRANSLATOR_LISTENER (multi_measure_text);
51 Stream_event *rest_ev_;
52 vector<Stream_event *> text_events_;
54 Rational last_main_moment_;
58 Item *last_command_item_;
62 vector<Spanner *> numbers_;
63 vector<Spanner *> last_numbers_;
66 Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
68 last_command_item_ = 0;
71 For the start of a score.
80 IMPLEMENT_TRANSLATOR_LISTENER (Multi_measure_rest_engraver, multi_measure_rest);
82 Multi_measure_rest_engraver::listen_multi_measure_rest (Stream_event *ev)
84 /* FIXME: Should use ASSIGN_EVENT_ONCE. Can't do that yet because of
85 the kill-mm-rests hack in part-combine-iterator. */
87 stop_moment_ = now_mom () + get_event_length (rest_ev_, now_mom ());
89 if (ASSIGN_EVENT_ONCE (rest_ev_, ev))
90 stop_moment_ = now_mom () + get_event_length (rest_ev_);
94 IMPLEMENT_TRANSLATOR_LISTENER (Multi_measure_rest_engraver, multi_measure_text);
96 Multi_measure_rest_engraver::listen_multi_measure_text (Stream_event *ev)
98 text_events_.push_back (ev);
102 Multi_measure_rest_engraver::process_music ()
104 if (rest_ev_ && !mmrest_
105 && stop_moment_ > now_mom ())
107 mmrest_ = make_spanner ("MultiMeasureRest", rest_ev_->self_scm ());
110 = make_spanner ("MultiMeasureRestNumber", rest_ev_->self_scm ());
111 numbers_.push_back (sp);
113 if (text_events_.size ())
115 for (vsize i = 0; i < text_events_.size (); i++)
117 Stream_event *e = text_events_[i];
119 = make_spanner ("MultiMeasureRestText", e->self_scm ());
120 SCM t = e->get_property ("text");
121 SCM dir = e->get_property ("direction");
122 sp->set_property ("text", t);
123 if (is_direction (dir))
124 sp->set_property ("direction", dir);
126 numbers_.push_back (sp);
130 Stack different scripts.
132 for (DOWN_and_UP (d))
135 for (vsize i = 0; i < numbers_.size (); i++)
137 if (scm_is_eq (scm_from_int (d),
138 numbers_[i]->get_property ("direction")))
141 Side_position_interface::add_support (numbers_[i], last);
148 for (vsize i = 0; i < numbers_.size (); i++)
150 Side_position_interface::add_support (numbers_[i], mmrest_);
151 numbers_[i]->set_parent (mmrest_, Y_AXIS);
152 numbers_[i]->set_parent (mmrest_, X_AXIS);
156 = scm_to_int (get_property ("internalBarNumber"));
159 bar_seen_ = bar_seen_ || scm_is_string (get_property ("whichBar"));
163 Multi_measure_rest_engraver::stop_translation_timestep ()
165 /* We cannot do this earlier, as breakableSeparationItem is not yet
168 Actually, we no longer use breakableSeparationItem -- should this be moved?
172 Grob *cmc = unsmob<Grob> (get_property ("currentCommandColumn"));
174 /* Ugh, this is a kludge - need this for multi-measure-rest-grace.ly */
175 last_command_item_ = dynamic_cast<Item *> (cmc);
178 if (last_command_item_ && (mmrest_ || last_rest_))
182 add_bound_item (last_rest_, last_command_item_);
183 for (vsize i = 0; i < last_numbers_.size (); i++)
184 add_bound_item (last_numbers_[i], last_command_item_);
189 add_bound_item (mmrest_, last_command_item_);
190 for (vsize i = 0; i < numbers_.size (); i++)
191 add_bound_item (numbers_[i], last_command_item_);
193 last_command_item_ = 0;
197 Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
201 last_numbers_.clear ();
204 text_events_.clear ();
209 Multi_measure_rest_engraver::start_translation_timestep ()
211 if (now_mom ().main_part_ >= stop_moment_.main_part_)
214 Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
216 Moment now = now_mom ();
218 && now.main_part_ != last_main_moment_
219 && mp.main_part_ == Rational (0))
221 last_rest_ = mmrest_;
222 last_numbers_ = numbers_;
224 int cur = scm_to_int (get_property ("internalBarNumber"));
225 int num = cur - start_measure_;
228 We can't plug a markup directly into the grob, since the
229 measure-count determines the formatting of the mmrest.
231 last_rest_->set_property ("measure-count", scm_from_int (num));
236 Grob *last = last_numbers_.size () ? last_numbers_[0] : 0;
237 if (last && scm_is_null (last->get_property ("text")))
239 SCM thres = get_property ("restNumberThreshold");
241 if (scm_is_number (thres))
242 t = scm_to_int (thres);
249 = scm_number_to_string (scm_from_int (num), scm_from_int (10));
250 last->set_property ("text", text);
255 last_main_moment_ = now.main_part_;
259 Multi_measure_rest_engraver::finalize ()
263 ADD_TRANSLATOR (Multi_measure_rest_engraver,
265 "Engrave multi-measure rests that are produced with"
266 " @samp{R}. It reads @code{measurePosition} and"
267 " @code{internalBarNumber} to determine what number to print"
268 " over the @ref{MultiMeasureRest}.",
272 "MultiMeasureRestNumber "
273 "MultiMeasureRestText ",
277 "restNumberThreshold "
278 "currentCommandColumn "