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->warning (_ ("conflicting timing request"));
37 timing_req_l_arr_[i]->warning (_("This is the other timing request"));
42 timing_req_l_arr_.push(t);
50 Time_signature_change_req*
51 Timing_translator::time_signature_req_l() const
53 Time_signature_change_req *m_l=0;
54 for (int i=0; !m_l && i < timing_req_l_arr_.size (); i++)
56 m_l=dynamic_cast<Time_signature_change_req*> (timing_req_l_arr_[i]);
62 Timing_translator::do_process_music()
64 for (int i=0; i < timing_req_l_arr_.size (); i++)
66 Timing_req * tr_l = timing_req_l_arr_[i];
68 if (Time_signature_change_req *m_l = dynamic_cast <Time_signature_change_req *> (tr_l))
70 int b_i= m_l->beats_i_;
71 int o_i = m_l->one_beat_i_;
72 set_time_signature (b_i, o_i);
74 else if (dynamic_cast <Barcheck_req *> (tr_l))
76 if (measure_position ())
78 tr_l ->warning (_f ("barcheck failed at: %s",
79 measure_position ().str ()));
81 daddy_trans_l_->set_property("measurePosition",
82 smobify (new Moment));
91 Timing_translator::do_pre_move_processing()
93 timing_req_l_arr_.set_size (0);
95 Global_translator *global_l =0;
98 t = t->daddy_trans_l_ ;
99 global_l = dynamic_cast<Global_translator*> (t);
103 /* allbars == ! skipbars */
104 SCM sb = get_property ("skipBars");
105 bool allbars = !to_boolean (sb);
107 // urg: multi bar rests: should always process whole of first bar?
108 SCM tim = get_property ("timing");
109 bool timb = to_boolean (tim);
112 Moment barleft = (measure_length () - measure_position ());
114 if (barleft > Moment (0))
115 global_l->add_moment_to_process (now_mom () + barleft);
120 ADD_THIS_TRANSLATOR(Timing_translator);
123 Timing_translator::do_creation_processing()
125 daddy_trans_l_->set_property ("timing" , SCM_BOOL_T);
126 daddy_trans_l_->set_property ("currentBarNumber" , gh_int2scm (1));
127 daddy_trans_l_->set_property ("measurePosition", smobify (new Moment));
128 daddy_trans_l_->set_property ("oneBeat", smobify (new Moment (1,4)));
129 daddy_trans_l_->set_property ("measureLength", smobify (new Moment (1)));
133 Timing_translator::measure_length () const
135 SCM l = get_property("measureLength");
136 if (SMOB_IS_TYPE_B(Moment, l))
137 return *SMOB_TO_TYPE (Moment, l);
144 Timing_translator::get_time_signature (int *n, int *d) const
146 Moment one_beat (1,4);
147 SCM one = get_property ("beatLength");
148 if (SMOB_IS_TYPE_B (Moment, one))
149 one_beat = *SMOB_TO_TYPE (Moment, one);
150 *n = measure_length () / one_beat;
151 *d = one_beat.den_i ();
156 Timing_translator::set_time_signature (int l, int o)
158 Moment one_beat = Moment (1)/Moment (o);
159 Moment len = Moment (l) * one_beat;
160 daddy_trans_l_->set_property ("measureLength", smobify (new Moment (len)));
161 daddy_trans_l_->set_property ("beatLength", smobify (new Moment (one_beat)));
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", smobify (measposp));
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));