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"
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++)
24 if (timing_req_l_arr_[i]->equal_b(t))
26 if (String (classname (timing_req_l_arr_[i])) == classname (r))
28 r->warning (_ ("conflicting timing request"));
33 timing_req_l_arr_.push(t);
41 Time_signature_change_req*
42 Timing_translator::time_signature_req_l() const
44 Time_signature_change_req *m_l=0;
45 for (int i=0; !m_l && i < timing_req_l_arr_.size (); i++)
47 m_l=dynamic_cast<Time_signature_change_req*> (timing_req_l_arr_[i]);
53 Timing_translator::do_process_requests()
55 for (int i=0; i < timing_req_l_arr_.size (); i++)
57 Timing_req * tr_l = timing_req_l_arr_[i];
59 if (Time_signature_change_req *m_l = dynamic_cast <Time_signature_change_req *> (tr_l))
61 int b_i= m_l->beats_i_;
62 int o_i = m_l->one_beat_i_;
63 set_time_signature (b_i, o_i);
65 else if (dynamic_cast <Barcheck_req *> (tr_l))
67 if (measure_position ())
69 tr_l ->warning (_f ("barcheck failed at: %s",
70 measure_position ().str ()));
72 daddy_trans_l_->set_property("measurePosition",
73 (new Moment)->smobify_self ());
85 Timing_translator::do_pre_move_processing()
87 timing_req_l_arr_.set_size (0);
89 Global_translator *global_l =0;
92 t = t->daddy_trans_l_ ;
93 global_l = dynamic_cast<Global_translator*> (t);
97 /* allbars == ! skipbars */
98 SCM sb = get_property ("skipBars", 0);
99 bool allbars = !(gh_boolean_p (sb)&&gh_scm2bool (sb));
101 // urg: multi bar rests: should always process whole of first bar?
102 SCM tim = get_property ("timing", 0);
103 bool timb = gh_boolean_p (tim) && gh_scm2bool ( tim);
108 Moment barleft = (measure_length () - measure_position ());
110 if (barleft < Moment (0))
113 global_l->add_moment_to_process (now_mom () + barleft);
118 ADD_THIS_TRANSLATOR(Timing_translator);
121 Timing_translator::do_creation_processing()
123 daddy_trans_l_->set_property ("timing" , SCM_BOOL_T);
124 daddy_trans_l_->set_property ("currentBarNumber" , gh_int2scm (1));
125 daddy_trans_l_->set_property("measurePosition",
126 (new Moment)->smobify_self());
127 daddy_trans_l_->set_property("measureLength",
128 (new Moment (1))->smobify_self());
133 Timing_translator::measure_length () const
135 SCM l = get_property("measureLength",0);
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 *n = measure_length () / one_beat_;
147 *d = one_beat_.den_i ();
152 Timing_translator::set_time_signature (int l, int o)
154 one_beat_ = Moment (1)/Moment (o);
155 Moment len = Moment (l) * one_beat_;
156 daddy_trans_l_->set_property ("measureLength",
157 (new Moment (len))->smobify_self ());
160 Timing_translator::Timing_translator()
162 one_beat_ = Moment( 1,4);
167 Timing_translator::measure_position () const
169 SCM sm = get_property ("measurePosition",0);
172 if (SMOB_IS_TYPE_B (Moment, sm))
174 m = *SMOB_TO_TYPE (Moment, sm);
175 while (m < Moment (0))
176 m += measure_length ();
183 Timing_translator::do_post_move_processing()
185 Translator *t = this;
186 Global_translator *global_l =0;
189 t = t->daddy_trans_l_ ;
190 global_l = dynamic_cast<Global_translator*> (t);
194 Moment dt = global_l->now_mom_ - global_l -> prev_mom_;
197 programming_error ("Moving backwards in time");
204 Moment * measposp =0;
206 SCM s = get_property ("measurePosition", 0);
207 if (SMOB_IS_TYPE_B (Moment, s))
209 measposp = SMOB_TO_TYPE (Moment,s);
213 measposp = new Moment;
214 daddy_trans_l_->set_property ("measurePosition", measposp->smobify_self ());
218 // don't need to set_property
220 Translator_group * tr =daddy_trans_l_;
221 SCM barn = get_property ("currentBarNumber", &tr);
223 if (gh_number_p(barn))
225 b = gh_scm2int (barn);
228 SCM cad = get_property ("timing", 0);
229 bool c= gh_boolean_p (cad ) && gh_scm2bool (cad);
231 Moment len = measure_length ();
232 while (c && *measposp >= len)
238 tr->set_property ("currentBarNumber", gh_int2scm (b));
244 Timing_translator::bars_i () const
246 return gh_scm2int (get_property ("currentBarNumber", 0));