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 Timing_translator::do_try_music (Music*r)
20 if (Timing_req *t = dynamic_cast <Timing_req *> (r))
22 for (int i=0; i < timing_req_l_arr_.size (); i++)
27 if (timing_req_l_arr_[i]->equal_b(t))
29 if (String (classname (timing_req_l_arr_[i])) == classname (r))
31 r->warning (_ ("conflicting timing request"));
32 timing_req_l_arr_[i]->warning (_("This is the other timing request"));
37 timing_req_l_arr_.push(t);
45 Time_signature_change_req*
46 Timing_translator::time_signature_req_l() const
48 Time_signature_change_req *m_l=0;
49 for (int i=0; !m_l && i < timing_req_l_arr_.size (); i++)
51 m_l=dynamic_cast<Time_signature_change_req*> (timing_req_l_arr_[i]);
57 Timing_translator::do_process_music()
59 for (int i=0; i < timing_req_l_arr_.size (); i++)
61 Timing_req * tr_l = timing_req_l_arr_[i];
63 if (Time_signature_change_req *m_l = dynamic_cast <Time_signature_change_req *> (tr_l))
65 int b_i= m_l->beats_i_;
66 int o_i = m_l->one_beat_i_;
67 set_time_signature (b_i, o_i);
69 else if (dynamic_cast <Barcheck_req *> (tr_l))
71 if (measure_position ())
73 tr_l ->warning (_f ("barcheck failed at: %s",
74 measure_position ().str ()));
76 daddy_trans_l_->set_property("measurePosition",
77 (new Moment)->smobify_self ());
86 Timing_translator::do_pre_move_processing()
88 timing_req_l_arr_.set_size (0);
90 Global_translator *global_l =0;
93 t = t->daddy_trans_l_ ;
94 global_l = dynamic_cast<Global_translator*> (t);
98 /* allbars == ! skipbars */
99 SCM sb = get_property ("skipBars");
100 bool allbars = !to_boolean (sb);
102 // urg: multi bar rests: should always process whole of first bar?
103 SCM tim = get_property ("timing");
104 bool timb = to_boolean (tim);
107 Moment barleft = (measure_length () - measure_position ());
109 if (barleft > Moment (0))
110 global_l->add_moment_to_process (now_mom () + barleft);
115 ADD_THIS_TRANSLATOR(Timing_translator);
118 Timing_translator::do_creation_processing()
120 daddy_trans_l_->set_property ("timing" , SCM_BOOL_T);
121 daddy_trans_l_->set_property ("currentBarNumber" , gh_int2scm (1));
122 daddy_trans_l_->set_property("measurePosition",
123 (new Moment)->smobify_self());
124 daddy_trans_l_->set_property ("oneBeat",
125 (new Moment (1,4))->smobify_self ());
126 daddy_trans_l_->set_property("measureLength",
127 (new Moment (1))->smobify_self());
131 Timing_translator::measure_length () const
133 SCM l = get_property("measureLength");
134 if (SMOB_IS_TYPE_B(Moment, l))
135 return *SMOB_TO_TYPE (Moment, l);
142 Timing_translator::get_time_signature (int *n, int *d) const
144 Moment one_beat (1,4);
145 SCM one = get_property ("beatLength");
146 if (SMOB_IS_TYPE_B (Moment, one))
147 one_beat = *SMOB_TO_TYPE (Moment, one);
148 *n = measure_length () / one_beat;
149 *d = one_beat.den_i ();
154 Timing_translator::set_time_signature (int l, int o)
156 Moment one_beat = Moment (1)/Moment (o);
157 Moment len = Moment (l) * one_beat;
158 daddy_trans_l_->set_property ("measureLength",
159 (new Moment (len))->smobify_self ());
160 daddy_trans_l_->set_property ("beatLength",
161 (new Moment (one_beat))->smobify_self ());
164 Timing_translator::Timing_translator()
170 Timing_translator::measure_position () const
172 SCM sm = get_property ("measurePosition");
175 if (SMOB_IS_TYPE_B (Moment, sm))
177 m = *SMOB_TO_TYPE (Moment, sm);
178 while (m < Moment (0))
179 m += measure_length ();
186 Timing_translator::do_post_move_processing()
188 Translator *t = this;
189 Global_translator *global_l =0;
192 t = t->daddy_trans_l_ ;
193 global_l = dynamic_cast<Global_translator*> (t);
197 Moment dt = global_l->now_mom_ - global_l -> prev_mom_;
200 programming_error ("Moving backwards in time");
207 Moment * measposp =0;
209 SCM s = get_property ("measurePosition");
210 if (SMOB_IS_TYPE_B (Moment, s))
212 measposp = SMOB_TO_TYPE (Moment,s);
216 measposp = new Moment;
217 daddy_trans_l_->set_property ("measurePosition", measposp->smobify_self ());
221 // don't need to set_property
223 SCM barn = get_property ("currentBarNumber");
225 if (gh_number_p(barn))
227 b = gh_scm2int (barn);
230 SCM cad = get_property ("timing");
231 bool c= to_boolean (cad );
233 Moment len = measure_length ();
234 while (c && *measposp >= len)
240 daddy_trans_l_->set_property ("currentBarNumber", gh_int2scm (b));