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 Stream_event *rest_ev_;
48 vector<Stream_event *> text_events_;
50 Rational last_main_moment_;
54 // Ugh, this is a kludge - need this for multi-measure-rest-grace.ly
55 Item *last_command_item_;
59 // text_[0] is a MultiMeasureRestNumber grob
60 // the rest are optional MultiMeasureRestText grobs
61 vector<Spanner *> text_;
62 vector<Spanner *> last_text_;
65 Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
67 last_command_item_ = 0;
70 For the start of a score.
79 IMPLEMENT_TRANSLATOR_LISTENER (Multi_measure_rest_engraver, multi_measure_rest);
81 Multi_measure_rest_engraver::listen_multi_measure_rest (Stream_event *ev)
83 /* FIXME: Should use ASSIGN_EVENT_ONCE. Can't do that yet because of
84 the kill-mm-rests hack in part-combine-iterator. */
86 stop_moment_ = now_mom () + get_event_length (rest_ev_, now_mom ());
88 if (ASSIGN_EVENT_ONCE (rest_ev_, ev))
89 stop_moment_ = now_mom () + get_event_length (rest_ev_);
93 IMPLEMENT_TRANSLATOR_LISTENER (Multi_measure_rest_engraver, multi_measure_text);
95 Multi_measure_rest_engraver::listen_multi_measure_text (Stream_event *ev)
97 text_events_.push_back (ev);
101 Multi_measure_rest_engraver::process_music ()
103 Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
105 Moment now = now_mom ();
107 && now.main_part_ != last_main_moment_
108 && mp.main_part_ == Rational (0))
110 last_rest_ = mmrest_;
113 int cur = scm_to_int (get_property ("internalBarNumber"));
114 int num = cur - start_measure_;
117 We can't plug a markup directly into the grob, since the
118 measure-count determines the formatting of the mmrest.
120 last_rest_->set_property ("measure-count", scm_from_int (num));
125 Grob *g = last_text_.size () ? last_text_[0] : 0;
126 if (g && scm_is_null (g->get_property ("text")))
128 SCM thres = get_property ("restNumberThreshold");
130 if (scm_is_number (thres))
131 t = scm_to_int (thres);
138 = scm_number_to_string (scm_from_int (num), scm_from_int (10));
139 g->set_property ("text", text);
144 last_main_moment_ = now.main_part_;
146 if (rest_ev_ && !mmrest_
147 && stop_moment_ > now_mom ())
149 mmrest_ = make_spanner ("MultiMeasureRest", rest_ev_->self_scm ());
152 = make_spanner ("MultiMeasureRestNumber", rest_ev_->self_scm ());
153 text_.push_back (sp);
155 if (text_events_.size ())
157 for (vsize i = 0; i < text_events_.size (); i++)
159 Stream_event *e = text_events_[i];
161 = make_spanner ("MultiMeasureRestText", e->self_scm ());
162 SCM t = e->get_property ("text");
163 SCM dir = e->get_property ("direction");
164 sp->set_property ("text", t);
165 if (is_direction (dir))
166 sp->set_property ("direction", dir);
168 text_.push_back (sp);
172 Stack different scripts.
174 for (DOWN_and_UP (d))
177 for (vsize i = 0; i < text_.size (); i++)
179 if (scm_is_eq (scm_from_int (d),
180 text_[i]->get_property ("direction")))
183 Side_position_interface::add_support (text_[i], last);
190 for (vsize i = 0; i < text_.size (); i++)
192 Side_position_interface::add_support (text_[i], mmrest_);
193 text_[i]->set_parent (mmrest_, Y_AXIS);
194 text_[i]->set_parent (mmrest_, X_AXIS);
198 = scm_to_int (get_property ("internalBarNumber"));
201 bar_seen_ = bar_seen_ || scm_is_string (get_property ("whichBar"));
204 Grob *cmc = unsmob<Grob> (get_property ("currentCommandColumn"));
205 last_command_item_ = dynamic_cast<Item *> (cmc);
208 if (last_command_item_ && (mmrest_ || last_rest_))
212 add_bound_item (last_rest_, last_command_item_);
213 for (vsize i = 0; i < last_text_.size (); i++)
214 add_bound_item (last_text_[i], last_command_item_);
219 add_bound_item (mmrest_, last_command_item_);
220 for (vsize i = 0; i < text_.size (); i++)
221 add_bound_item (text_[i], last_command_item_);
223 last_command_item_ = 0;
233 text_events_.clear ();
238 Multi_measure_rest_engraver::start_translation_timestep ()
240 if (now_mom ().main_part_ >= stop_moment_.main_part_)
244 ADD_TRANSLATOR (Multi_measure_rest_engraver,
246 "Engrave multi-measure rests that are produced with"
247 " @samp{R}. It reads @code{measurePosition} and"
248 " @code{internalBarNumber} to determine what number to print"
249 " over the @ref{MultiMeasureRest}.",
253 "MultiMeasureRestNumber "
254 "MultiMeasureRestText ",
258 "restNumberThreshold "
259 "currentCommandColumn "