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 (new Moment)->smobify_self ());
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",
128 (new Moment)->smobify_self());
129 daddy_trans_l_->set_property ("oneBeat",
130 (new Moment (1,4))->smobify_self ());
131 daddy_trans_l_->set_property("measureLength",
132 (new Moment (1))->smobify_self());
136 Timing_translator::measure_length () const
138 SCM l = get_property("measureLength");
139 if (SMOB_IS_TYPE_B(Moment, l))
140 return *SMOB_TO_TYPE (Moment, l);
147 Timing_translator::get_time_signature (int *n, int *d) const
149 Moment one_beat (1,4);
150 SCM one = get_property ("beatLength");
151 if (SMOB_IS_TYPE_B (Moment, one))
152 one_beat = *SMOB_TO_TYPE (Moment, one);
153 *n = measure_length () / one_beat;
154 *d = one_beat.den_i ();
159 Timing_translator::set_time_signature (int l, int o)
161 Moment one_beat = Moment (1)/Moment (o);
162 Moment len = Moment (l) * one_beat;
163 daddy_trans_l_->set_property ("measureLength",
164 (new Moment (len))->smobify_self ());
165 daddy_trans_l_->set_property ("beatLength",
166 (new Moment (one_beat))->smobify_self ());
169 Timing_translator::Timing_translator()
175 Timing_translator::measure_position () const
177 SCM sm = get_property ("measurePosition");
180 if (SMOB_IS_TYPE_B (Moment, sm))
182 m = *SMOB_TO_TYPE (Moment, sm);
183 while (m < Moment (0))
184 m += measure_length ();
191 Timing_translator::do_post_move_processing()
193 Translator *t = this;
194 Global_translator *global_l =0;
197 t = t->daddy_trans_l_ ;
198 global_l = dynamic_cast<Global_translator*> (t);
202 Moment dt = global_l->now_mom_ - global_l -> prev_mom_;
205 programming_error ("Moving backwards in time");
212 Moment * measposp =0;
214 SCM s = get_property ("measurePosition");
215 if (SMOB_IS_TYPE_B (Moment, s))
217 measposp = SMOB_TO_TYPE (Moment,s);
221 measposp = new Moment;
222 daddy_trans_l_->set_property ("measurePosition", measposp->smobify_self ());
226 // don't need to set_property
228 SCM barn = get_property ("currentBarNumber");
230 if (gh_number_p(barn))
232 b = gh_scm2int (barn);
235 SCM cad = get_property ("timing");
236 bool c= to_boolean (cad );
238 Moment len = measure_length ();
239 while (c && *measposp >= len)
245 daddy_trans_l_->set_property ("currentBarNumber", gh_int2scm (b));