2 repeat-engraver.cc -- implement Repeat_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--1999 Jan Nieuwenhuizen <janneke@gnu.org>
9 #include "repeat-engraver.hh"
11 #include "bar-engraver.hh"
12 #include "musical-request.hh"
13 #include "multi-measure-rest.hh"
14 #include "command-request.hh"
15 #include "time-description.hh"
16 #include "engraver-group-engraver.hh"
17 #include "new-repeated-music.hh"
18 #include "time-description.hh"
19 #include "volta-spanner.hh"
20 #include "note-column.hh"
21 #include "paper-def.hh"
22 #include "music-list.hh"
24 ADD_THIS_TRANSLATOR (Repeat_engraver);
27 Repeat_engraver::do_try_music (Music* m)
29 if (Repeated_music* r = dynamic_cast<Repeated_music *> (m))
31 if (repeated_music_l_)
33 m->warning ("Already have repeated music.");
39 repeated_music_l_ = r;
47 Walk through repeat music, and generate events for appropriate times.
50 Repeat_engraver::queue_events ()
52 Music_sequence* alt = repeated_music_l_->alternatives_p_;
53 Moment walk_mom = now_mom () + repeated_music_l_->repeat_body_p_->length_mom ();
56 Cons_list<Bar_create_event> becel;
57 becel.append (new Bar_create_event (now_mom (), "|:"));
61 becel.append (new Bar_create_event (walk_mom, ":|"));
62 becel.append (new Bar_create_event (walk_mom, "stop"));
67 int volta_number = repeated_music_l_->repeats_i_ - alt->length_i () + 1;
70 all repeat alternatives, and generate events with
71 appropriate timestamps. The volta spanner event (a number string)
72 happens at the begin of the alt. The :| bar event at the ending.
74 for (Cons<Music> *i = alt->music_p_list_p_->head_; i; i = i->next_)
78 some idiot might typeset a repeat not starting on a
79 barline. Make sure there is one.
81 (todo: should try to avoid line breaks?)
85 becel.append (new Bar_create_event (walk_mom, ""));
89 Bar_create_event * c = new Bar_create_event (walk_mom, last_number+ 1,
96 last_number = volta_number;
99 // should think about voltaSpannerDuration
100 walk_mom += i->car_->length_mom();
103 becel.append (new Bar_create_event (walk_mom, ":|"));
105 becel.append (new Bar_create_event (walk_mom, "stop"));
108 create_barmoments_queue_ = becel.head_ ;
113 Repeat_engraver::do_process_requests ()
115 if (repeated_music_l_ && !done_this_one_b_)
118 done_this_one_b_ = true;
122 Cons<Bar_create_event> * head = create_barmoments_queue_;
126 Bar_engraver* bar_engraver_l = dynamic_cast <Bar_engraver*>
127 (daddy_grav_l ()->get_simple_translator ("Bar_engraver"));
130 Do all the events that need to be done now.
133 while (head && now_mom () == head->car_->when_)
135 create_barmoments_queue_ = create_barmoments_queue_->next_;
139 String t = head->car_->type_;
140 if (head->car_->bar_b_)
142 if (t == "stop" || t == ":|")
144 end_volta_span_p_ = volta_span_p_;
149 bar_engraver_l->request_bar (t);
151 bar_engraver_l->request_bar ("");
155 assert (!volta_span_p_);
156 volta_span_p_ = new Volta_spanner;
157 announce_element (Score_element_info (volta_span_p_,0));
158 volta_span_p_->number_str_ = t;
159 volta_span_p_->last_b_ = head->car_->last_b_;
160 // voltaSpannerDuration stuff here.
161 // other property stuff here.
167 warning ("No bar engraver found. Ignoring repeats.");
173 head = create_barmoments_queue_;
176 assert (!head || head->car_->when_ > now_mom ());
181 Repeat_engraver::acknowledge_element (Score_element_info i)
183 if (Note_column *c = dynamic_cast<Note_column *> (i.elem_l_))
186 volta_span_p_->add_column (c);
187 if (end_volta_span_p_)
188 end_volta_span_p_->add_column (c);
190 if (Bar *c = dynamic_cast<Bar*> (i.elem_l_))
193 volta_span_p_->add_bar (c);
194 if (end_volta_span_p_)
195 end_volta_span_p_ ->add_bar(c);
201 Repeat_engraver::do_removal_processing ()
205 typeset_element(volta_span_p_);
207 if (end_volta_span_p_)
209 typeset_element (end_volta_span_p_);
211 // todo: the paranoid may also delete create_barmoments_queue_
215 Repeat_engraver::do_post_move_processing ()
217 for (Cons<Bar_create_event> *p = create_barmoments_queue_;
218 p && p->car_->when_ == now_mom (); p = p->next_)
219 if (p->car_->type_ == "stop")
221 repeated_music_l_ = 0;
222 done_this_one_b_ = false;
227 Repeat_engraver::do_pre_move_processing ()
229 if (end_volta_span_p_)
231 typeset_element (end_volta_span_p_ );
232 end_volta_span_p_ =0;
238 Repeat_engraver::Repeat_engraver()
240 repeated_music_l_ =0;
241 end_volta_span_p_ =0;
243 done_this_one_b_ = false;
244 create_barmoments_queue_ =0;
248 Bar_create_event::Bar_create_event()
254 Bar_create_event::Bar_create_event (Moment w, String s)
262 Bar_create_event::Bar_create_event (Moment w, int i, int j)
269 type_ = to_str (i) + ".-" ;
271 type_ += to_str(j) + ".";