2 timing-translator.cc -- implement Timing_translator
5 source file of the GNU LilyPond music typesetter
7 (c) 1997--1999 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"
17 ADD_THIS_TRANSLATOR (Timing_translator);
20 Timing_translator::do_try_music (Music*r)
22 if (Timing_req *t = dynamic_cast <Timing_req *> (r))
24 for (int i=0; i < timing_req_l_arr_.size (); i++)
26 if (timing_req_l_arr_[i]->equal_b(t))
28 if (String (classname (timing_req_l_arr_[i])) == classname (r))
30 r->warning (_ ("conflicting timing request"));
35 timing_req_l_arr_.push(t);
43 Time_signature_change_req*
44 Timing_translator::time_signature_req_l() const
46 Time_signature_change_req *m_l=0;
47 for (int i=0; !m_l && i < timing_req_l_arr_.size (); i++)
49 m_l=dynamic_cast<Time_signature_change_req*> (timing_req_l_arr_[i]);
55 Timing_translator::do_process_requests()
57 for (int i=0; i < timing_req_l_arr_.size (); i++)
59 Timing_req * tr_l = timing_req_l_arr_[i];
61 if (Time_signature_change_req *m_l = dynamic_cast <Time_signature_change_req *> (tr_l))
63 int b_i= m_l->beats_i_;
64 int o_i = m_l->one_beat_i_;
65 set_time_signature (b_i, o_i);
67 else if (dynamic_cast <Barcheck_req *> (tr_l))
69 if (measure_position ())
71 tr_l ->warning (_f ("barcheck failed at: %s",
72 measure_position ().str ()));
74 daddy_trans_l_->set_property("measurePosition",
75 (new Moment)->smobify_self ());
84 Timing_translator::do_pre_move_processing()
86 timing_req_l_arr_.set_size (0);
88 Global_translator *global_l =0;
91 t = t->daddy_trans_l_ ;
92 global_l = dynamic_cast<Global_translator*> (t);
96 /* allbars == ! skipbars */
97 SCM sb = get_property ("skipBars", 0);
98 bool allbars = !(gh_boolean_p (sb)&&gh_scm2bool (sb));
100 // urg: multi bar rests: should always process whole of first bar?
101 SCM tim = get_property ("timing", 0);
102 bool timb = to_boolean (tim);
105 Moment barleft = (measure_length () - measure_position ());
107 if (barleft > Moment (0))
108 global_l->add_moment_to_process (now_mom () + barleft);
113 Timing_translator::do_creation_processing()
115 daddy_trans_l_->set_property ("timing" , SCM_BOOL_T);
116 daddy_trans_l_->set_property ("currentBarNumber" , gh_int2scm (1));
117 daddy_trans_l_->set_property("measurePosition",
118 (new Moment)->smobify_self());
119 daddy_trans_l_->set_property ("oneBeat",
120 (new Moment (1,4))->smobify_self ());
121 daddy_trans_l_->set_property("measureLength",
122 (new Moment (1))->smobify_self());
126 Timing_translator::measure_length () const
128 SCM l = get_property("measureLength",0);
129 if (SMOB_IS_TYPE_B(Moment, l))
130 return *SMOB_TO_TYPE (Moment, l);
137 Timing_translator::get_time_signature (int *n, int *d) const
139 Moment one_beat (1,4);
140 SCM one = get_property ("beatLength",0);
141 if (SMOB_IS_TYPE_B (Moment, one))
142 one_beat = *SMOB_TO_TYPE (Moment, one);
143 *n = measure_length () / one_beat;
144 *d = one_beat.den_i ();
149 Timing_translator::set_time_signature (int l, int o)
151 Moment one_beat = Moment (1)/Moment (o);
152 Moment len = Moment (l) * one_beat;
153 daddy_trans_l_->set_property ("measureLength",
154 (new Moment (len))->smobify_self ());
155 daddy_trans_l_->set_property ("beatength",
156 (new Moment (one_beat))->smobify_self ());
159 Timing_translator::Timing_translator()
165 Timing_translator::measure_position () const
167 SCM sm = get_property ("measurePosition",0);
170 if (SMOB_IS_TYPE_B (Moment, sm))
172 m = *SMOB_TO_TYPE (Moment, sm);
173 while (m < Moment (0))
174 m += measure_length ();
181 Timing_translator::do_post_move_processing()
183 Translator *t = this;
184 Global_translator *global_l =0;
187 t = t->daddy_trans_l_ ;
188 global_l = dynamic_cast<Global_translator*> (t);
192 Moment dt = global_l->now_mom_ - global_l -> prev_mom_;
195 programming_error ("Moving backwards in time");
202 Moment * measposp =0;
204 SCM s = get_property ("measurePosition", 0);
205 if (SMOB_IS_TYPE_B (Moment, s))
207 measposp = SMOB_TO_TYPE (Moment,s);
211 measposp = new Moment;
212 daddy_trans_l_->set_property ("measurePosition", measposp->smobify_self ());
216 // don't need to set_property
218 Translator_group * tr =daddy_trans_l_;
219 SCM barn = get_property ("currentBarNumber", &tr);
221 if (gh_number_p(barn))
223 b = gh_scm2int (barn);
226 SCM cad = get_property ("timing", 0);
227 bool c= to_boolean (cad );
229 Moment len = measure_length ();
230 while (c && *measposp >= len)
236 tr->set_property ("currentBarNumber", gh_int2scm (b));