2 multi_measure_rest-engraver.cc -- implement Multi_measure_rest_engraver
4 (c) 1998--2006 Jan Nieuwenhuizen <janneke@gnu.org>
5 Han-Wen Nienhuys <hanwen@xs4all.nl>
8 #include "multi-measure-rest.hh"
9 #include "paper-column.hh"
10 #include "engraver-group.hh"
11 #include "side-position-interface.hh"
12 #include "staff-symbol-referencer.hh"
13 #include "stream-event.hh"
16 #include "translator.icc"
19 The name says it all: make multi measure rests
21 class Multi_measure_rest_engraver : public Engraver
24 TRANSLATOR_DECLARATIONS (Multi_measure_rest_engraver);
27 void process_music ();
28 void stop_translation_timestep ();
29 void start_translation_timestep ();
30 virtual void finalize ();
31 DECLARE_TRANSLATOR_LISTENER (multi_measure_rest);
32 DECLARE_TRANSLATOR_LISTENER (multi_measure_text);
35 Stream_event *rest_ev_;
36 vector<Stream_event*> text_events_;
38 Rational last_main_moment_;
42 Item *last_command_item_;
46 vector<Spanner*> numbers_;
47 vector<Spanner*> last_numbers_;
50 Multi_measure_rest_engraver::Multi_measure_rest_engraver ()
52 last_command_item_ = 0;
55 For the start of a score.
64 IMPLEMENT_TRANSLATOR_LISTENER (Multi_measure_rest_engraver, multi_measure_rest);
66 Multi_measure_rest_engraver::listen_multi_measure_rest (Stream_event *ev)
68 /* FIXME: Should use ASSIGN_EVENT_ONCE. Can't do that yet because of
69 the kill-mm-rests hack in part-combine-iterator. */
71 stop_moment_ = now_mom () + get_event_length (rest_ev_);
73 if (ASSIGN_EVENT_ONCE (rest_ev_, ev))
74 stop_moment_ = now_mom () + get_event_length (rest_ev_);
78 IMPLEMENT_TRANSLATOR_LISTENER (Multi_measure_rest_engraver, multi_measure_text);
80 Multi_measure_rest_engraver::listen_multi_measure_text (Stream_event *ev)
82 text_events_.push_back (ev);
86 Multi_measure_rest_engraver::process_music ()
88 if (rest_ev_ && !mmrest_
89 && stop_moment_ > now_mom ())
91 mmrest_ = make_spanner ("MultiMeasureRest", rest_ev_->self_scm ());
94 = make_spanner ("MultiMeasureRestNumber", rest_ev_->self_scm ());
95 numbers_.push_back (sp);
97 if (text_events_.size ())
99 for (vsize i = 0; i < text_events_.size (); i++)
101 Stream_event *e = text_events_[i];
103 = make_spanner ("MultiMeasureRestText", e->self_scm ());
104 SCM t = e->get_property ("text");
105 SCM dir = e->get_property ("direction");
106 sp->set_property ("text", t);
107 if (is_direction (dir))
108 sp->set_property ("direction", dir);
110 numbers_.push_back (sp);
114 Stack different scripts.
120 for (vsize i = 0; i < numbers_.size (); i++)
122 if (scm_from_int (d) == numbers_[i]->get_property ("direction"))
125 Side_position_interface::add_support (numbers_[i], last);
130 while (flip (&d) != DOWN);
133 for (vsize i = 0; i < numbers_.size (); i++)
135 Side_position_interface::add_support (numbers_[i], mmrest_);
136 numbers_[i]->set_parent (mmrest_, Y_AXIS);
140 = scm_to_int (get_property ("internalBarNumber"));
143 bar_seen_ = bar_seen_ || scm_is_string (get_property ("whichBar"));
147 Multi_measure_rest_engraver::stop_translation_timestep ()
149 /* We cannot do this earlier, as breakableSeparationItem is not yet
153 Grob *cmc = unsmob_grob (get_property ("breakableSeparationItem"));
155 cmc = unsmob_grob (get_property ("currentCommandColumn"));
157 /* Ugh, this is a kludge - need this for multi-measure-rest-grace.ly */
158 last_command_item_ = dynamic_cast<Item *> (cmc);
161 if (last_command_item_ && (mmrest_ || last_rest_))
165 add_bound_item (last_rest_, last_command_item_);
166 for (vsize i = 0; i < last_numbers_.size (); i++)
167 add_bound_item (last_numbers_[i], last_command_item_);
172 add_bound_item (mmrest_, last_command_item_);
173 for (vsize i = 0; i < numbers_.size (); i++)
174 add_bound_item (numbers_[i], last_command_item_);
176 last_command_item_ = 0;
180 Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
184 last_numbers_.clear ();
187 text_events_.clear ();
192 Multi_measure_rest_engraver::start_translation_timestep ()
194 if (now_mom ().main_part_ >= stop_moment_.main_part_)
197 Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
199 Moment now = now_mom ();
201 && now.main_part_ != last_main_moment_
202 && mp.main_part_ == Rational (0))
204 last_rest_ = mmrest_;
205 last_numbers_ = numbers_;
207 int cur = scm_to_int (get_property ("internalBarNumber"));
208 int num = cur - start_measure_;
211 We can't plug a markup directly into the grob, since the
212 measure-count determines the formatting of the mmrest.
214 last_rest_->set_property ("measure-count", scm_from_int (num));
216 SCM sml = get_property ("measureLength");
217 Rational ml = (unsmob_moment (sml)) ? unsmob_moment (sml)->main_part_ : Rational (1);
218 if (ml >= Rational (2))
219 last_rest_->set_property ("use-breve-rest", SCM_BOOL_T);
224 Grob *last = last_numbers_.size () ? last_numbers_[0] : 0;
225 if (last && last->get_property ("text") == SCM_EOL)
227 SCM thres = get_property ("restNumberThreshold");
229 if (scm_is_number (thres))
230 t = scm_to_int (thres);
237 = scm_number_to_string (scm_from_int (num), scm_from_int (10));
238 last->set_property ("text", text);
243 last_main_moment_ = now.main_part_;
247 Multi_measure_rest_engraver::finalize ()
251 ADD_TRANSLATOR (Multi_measure_rest_engraver,
253 "Engraves multi-measure rests that are produced with @code{R}. Reads "
254 "@code{measurePosition} and @code{internalBarNumber} to determine what number to print "
255 "over the @ref{MultiMeasureRest}. Reads @code{measureLength} to determine if it "
256 "should use a whole rest or a breve rest to represent 1 measure ",
260 "MultiMeasureRestNumber "
261 "MultiMeasureRestText ",
264 "multi-measure-rest-event "
265 "multi-measure-text-event ",
269 "restNumberThreshold "
270 "breakableSeparationItem "
271 "currentCommandColumn "