2 repeat-engraver.cc -- implement Repeat_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2000 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 "timing-translator.hh"
16 #include "engraver-group-engraver.hh"
17 #include "repeated-music.hh"
18 #include "timing-translator.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_)
36 repeated_music_l_ = r;
40 We acknowledge other types of unfolded music as well, to
41 get auto context selection right.
43 if (r->type_ == "volta" || r->type_ == "unfolded")
51 Walk through repeat music, and generate events for appropriate times.
53 UGH. Should use Music_iteration for this.
55 Should also queue some event to get timing information reset during
56 2nd and following voltas.
59 Repeat_engraver::queue_events ()
61 Music_sequence* alt = repeated_music_l_->alternatives_p_;
62 Moment walk_mom = now_mom () + repeated_music_l_->repeat_body_p_->length_mom ();
64 SCM novolta = get_property ("noVoltaBraces");
65 bool create_volta = !to_boolean (novolta);
67 Cons_list<Bar_create_event> becel;
68 becel.append (new Bar_create_event (now_mom (), "|:"));
72 becel.append (new Bar_create_event (walk_mom, ":|"));
73 becel.append (new Bar_create_event (walk_mom, "stop"));
78 int volta_number = repeated_music_l_->repeats_i_ - alt->length_i () + 1;
81 all repeat alternatives, and generate events with
82 appropriate timestamps. The volta spanner event (a number string)
83 happens at the begin of the alt. The :| bar event at the ending.
85 for (Cons<Music> *i = alt->music_p_list_p_->head_; i; i = i->next_)
89 some idiot might typeset a repeat not starting on a
90 barline. Make sure there is one.
92 (todo: should try to avoid line breaks?)
96 becel.append (new Bar_create_event (walk_mom, ""));
102 Bar_create_event * c = new Bar_create_event (walk_mom, last_number+ 1,
109 last_number = volta_number;
111 SCM l (get_property ("voltaSpannerDuration"));
112 if (SMOB_IS_TYPE_B (Moment, l))
114 Moment vSD_mom = *SMOB_TO_TYPE (Moment,l);
115 if ( vSD_mom < i->car_->length_mom() ) // terminate volta early ?
119 becel.append (new Bar_create_event (vSD_mom, "stop"));
123 walk_mom += i->car_->length_mom();
126 becel.append (new Bar_create_event (walk_mom, ":|"));
128 becel.append (new Bar_create_event (walk_mom, "stop"));
132 Cons<Bar_create_event> *&tail = create_barmoments_queue_
133 ? last_cons (create_barmoments_queue_)->next_
134 : create_barmoments_queue_;
141 Repeat_engraver::do_process_music ()
143 if (repeated_music_l_ && !done_this_one_b_)
146 done_this_one_b_ = true;
150 Cons<Bar_create_event> * head = create_barmoments_queue_;
154 Bar_engraver* bar_engraver_l = dynamic_cast <Bar_engraver*>
155 (daddy_grav_l ()->get_simple_translator ("Bar_engraver"));
158 Do all the events that need to be done now.
160 while (head && now_mom () == head->car_->when_)
162 create_barmoments_queue_ = create_barmoments_queue_->next_;
166 String t = head->car_->type_;
167 if (head->car_->bar_b_)
169 if (t == "stop" || t == ":|")
171 end_volta_span_p_ = volta_span_p_;
176 bar_engraver_l->request_bar (t);
178 bar_engraver_l->request_bar ("");
182 assert (!volta_span_p_);
183 volta_span_p_ = new Volta_spanner (SCM_EOL);
184 announce_element (Score_element_info (volta_span_p_,0));
185 volta_span_p_->set_elt_property ("text",
186 ly_str02scm (t.ch_C()));
187 volta_span_p_->set_elt_property ("last-volta",
188 gh_bool2scm (head->car_->last_b_));
189 // voltaSpannerDuration stuff here.
190 // other property stuff here.
196 warning (_ ("No bar engraver found. Ignoring repeats."));
202 head = create_barmoments_queue_;
205 assert (!head || head->car_->when_ > now_mom ());
210 Repeat_engraver::acknowledge_element (Score_element_info i)
212 if (Note_column *c = dynamic_cast<Note_column *> (i.elem_l_))
215 volta_span_p_->add_column (c);
216 if (end_volta_span_p_)
217 end_volta_span_p_->add_column (c);
219 if (Bar *c = dynamic_cast<Bar*> (i.elem_l_))
222 volta_span_p_->add_bar (c);
223 if (end_volta_span_p_)
224 end_volta_span_p_ ->add_bar(c);
230 Repeat_engraver::do_removal_processing ()
234 typeset_element(volta_span_p_);
236 if (end_volta_span_p_)
238 typeset_element (end_volta_span_p_);
240 // todo: the paranoid may also delete create_barmoments_queue_
244 Repeat_engraver::do_post_move_processing ()
246 for (Cons<Bar_create_event> *p = create_barmoments_queue_;
247 p && p->car_->when_ == now_mom (); p = p->next_)
248 if (p->car_->type_ == "stop")
250 repeated_music_l_ = 0;
251 done_this_one_b_ = false;
256 Repeat_engraver::do_pre_move_processing ()
258 if (end_volta_span_p_)
260 typeset_element (end_volta_span_p_ );
261 end_volta_span_p_ =0;
267 Repeat_engraver::Repeat_engraver()
269 repeated_music_l_ =0;
270 end_volta_span_p_ =0;
272 done_this_one_b_ = false;
273 create_barmoments_queue_ =0;
277 Bar_create_event::Bar_create_event()
283 Bar_create_event::Bar_create_event (Moment w, String s)
291 Bar_create_event::Bar_create_event (Moment w, int i, int j)
298 type_ = to_str (i) + ".-" ;
300 type_ += to_str(j) + ".";