2 timing-translator.cc -- implement Timing_translator
5 source file of the GNU LilyPond music typesetter
7 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
11 #include "timing-translator.hh"
12 #include "command-request.hh"
13 #include "translator-group.hh"
14 #include "global-translator.hh"
15 #include "multi-measure-rest.hh"
18 TODO: change the rest of lily, so communication with
19 Timing_translator is only done through properties. This means the
20 class declaration can go here. */
23 Timing_translator::do_try_music (Music*r)
25 if (Timing_req *t = dynamic_cast <Timing_req *> (r))
27 for (int i=0; i < timing_req_l_arr_.size (); i++)
32 if (timing_req_l_arr_[i]->equal_b(t))
34 if (String (classname (timing_req_l_arr_[i])) == classname (r))
36 r->origin ()->warning (_ ("conflicting timing request"));
37 timing_req_l_arr_[i]->origin ()->warning (_("This is the other timing request"));
42 timing_req_l_arr_.push(t);
48 Timing_translator::do_process_music()
50 for (int i=0; i < timing_req_l_arr_.size (); i++)
52 Timing_req * tr_l = timing_req_l_arr_[i];
54 if (Time_signature_change_req *m_l = dynamic_cast <Time_signature_change_req *> (tr_l))
56 int b_i= m_l->beats_i_;
57 int o_i = m_l->one_beat_i_;
58 set_time_signature (b_i, o_i);
60 else if (dynamic_cast <Barcheck_req *> (tr_l))
62 if (measure_position ())
65 tr_l ->origin ()->warning (_f ("barcheck failed at: %s",
66 measure_position ().str ()));
68 daddy_trans_l_->set_property("measurePosition", nm.make_scm ());
76 Timing_translator::do_pre_move_processing()
78 timing_req_l_arr_.set_size (0);
80 Global_translator *global_l =0;
83 t = t->daddy_trans_l_ ;
84 global_l = dynamic_cast<Global_translator*> (t);
88 /* allbars == ! skipbars */
89 SCM sb = get_property ("skipBars");
90 bool allbars = !to_boolean (sb);
92 // urg: multi bar rests: should always process whole of first bar?
93 SCM tim = get_property ("timing");
94 bool timb = to_boolean (tim);
97 Moment barleft = (measure_length () - measure_position ());
99 if (barleft > Moment (0))
100 global_l->add_moment_to_process (now_mom () + barleft);
105 ADD_THIS_TRANSLATOR(Timing_translator);
108 Timing_translator::do_creation_processing()
111 daddy_trans_l_->set_property ("timing" , SCM_BOOL_T);
112 daddy_trans_l_->set_property ("currentBarNumber" , gh_int2scm (1));
113 daddy_trans_l_->set_property ("measurePosition", m.make_scm ());
114 daddy_trans_l_->set_property ("beatLength", Moment (1,4).make_scm ());
115 daddy_trans_l_->set_property ("measureLength", Moment (1).make_scm());
116 daddy_trans_l_->set_property ("timeSignatureFraction",
117 gh_cons (gh_int2scm (4), gh_int2scm (4)));
121 Timing_translator::measure_length () const
123 SCM l = get_property("measureLength");
124 if (unsmob_moment(l))
125 return *unsmob_moment (l);
132 Timing_translator::set_time_signature (int l, int o)
134 Moment one_beat = Moment (1)/Moment (o);
135 Moment len = Moment (l) * one_beat;
136 daddy_trans_l_->set_property ("measureLength", len.make_scm ());
137 daddy_trans_l_->set_property ("beatLength", one_beat.make_scm ());
138 daddy_trans_l_->set_property ("timeSignatureFraction",
139 gh_cons (gh_int2scm (l), gh_int2scm (o)));
142 Timing_translator::Timing_translator()
148 Timing_translator::measure_position () const
150 SCM sm = get_property ("measurePosition");
153 if (unsmob_moment (sm))
155 m = *unsmob_moment(sm);
156 while (m < Moment (0))
157 m += measure_length ();
164 Timing_translator::do_post_move_processing()
166 Translator *t = this;
167 Global_translator *global_l =0;
170 t = t->daddy_trans_l_ ;
171 global_l = dynamic_cast<Global_translator*> (t);
175 Moment dt = global_l->now_mom_ - global_l -> prev_mom_;
178 programming_error ("Moving backwards in time");
187 SCM s = get_property ("measurePosition");
188 if (unsmob_moment (s))
190 measposp = *unsmob_moment(s);
194 daddy_trans_l_->set_property ("measurePosition", measposp.make_scm());
199 SCM barn = get_property ("currentBarNumber");
201 if (gh_number_p(barn))
203 b = gh_scm2int (barn);
206 SCM cad = get_property ("timing");
207 bool c= to_boolean (cad );
209 Moment len = measure_length ();
210 while (c && measposp >= len)
216 daddy_trans_l_->set_property ("currentBarNumber", gh_int2scm (b));
217 daddy_trans_l_->set_property ("measurePosition", measposp.make_scm());