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->origin ()->warning (_ ("conflicting timing request"));
37 timing_req_l_arr_[i]->origin ()->warning (_("This is the other timing request"));
43 We have to do this soon enough. Maybe we'd better disguise
44 \time as a \property. Then all settings will be `immediate'.
46 if (Time_signature_change_req *c
47 = dynamic_cast <Time_signature_change_req *> (t))
49 int b = gh_scm2int (c->get_mus_property ("beats"));
50 int o = gh_scm2int (c->get_mus_property ("one-beat"));
52 set_time_signature (b, o);
55 timing_req_l_arr_.push(t);
62 Timing_translator::do_process_music()
64 for (int i=0; i < timing_req_l_arr_.size (); i++)
66 if (!dynamic_cast <Barcheck_req *> (timing_req_l_arr_[i]))
68 if (measure_position ())
70 timing_req_l_arr_[i]->origin ()->warning (_f ("barcheck failed at: %s",
71 measure_position ().str ()));
75 daddy_trans_l_->set_property("measurePosition", zero.make_scm ());
81 Timing_translator::do_pre_move_processing()
83 timing_req_l_arr_.set_size (0);
85 Global_translator *global_l =0;
88 t = t->daddy_trans_l_ ;
89 global_l = dynamic_cast<Global_translator*> (t);
93 /* allbars == ! skipbars */
94 SCM sb = get_property ("skipBars");
95 bool allbars = !to_boolean (sb);
97 // urg: multi bar rests: should always process whole of first bar?
98 SCM tim = get_property ("timing");
99 bool timb = to_boolean (tim);
102 Moment barleft = (measure_length () - measure_position ());
104 if (barleft > Moment (0))
105 global_l->add_moment_to_process (now_mom () + barleft);
110 ADD_THIS_TRANSLATOR(Timing_translator);
113 Timing_translator::do_creation_processing()
116 daddy_trans_l_->set_property ("timing" , SCM_BOOL_T);
117 daddy_trans_l_->set_property ("currentBarNumber" , gh_int2scm (1));
118 daddy_trans_l_->set_property ("measurePosition", m.make_scm ());
119 daddy_trans_l_->set_property ("beatLength", Moment (1,4).make_scm ());
120 daddy_trans_l_->set_property ("measureLength", Moment (1).make_scm());
121 daddy_trans_l_->set_property ("timeSignatureFraction",
122 gh_cons (gh_int2scm (4), gh_int2scm (4)));
126 Timing_translator::measure_length () const
128 SCM l = get_property("measureLength");
129 if (unsmob_moment(l))
130 return *unsmob_moment (l);
137 Timing_translator::set_time_signature (int l, int o)
139 Moment one_beat = Moment (1)/Moment (o);
140 Moment len = Moment (l) * one_beat;
141 daddy_trans_l_->set_property ("measureLength", len.make_scm ());
142 daddy_trans_l_->set_property ("beatLength", one_beat.make_scm ());
143 daddy_trans_l_->set_property ("timeSignatureFraction",
144 gh_cons (gh_int2scm (l), gh_int2scm (o)));
147 Timing_translator::Timing_translator()
153 Timing_translator::measure_position () const
155 SCM sm = get_property ("measurePosition");
158 if (unsmob_moment (sm))
160 m = *unsmob_moment(sm);
161 while (m < Moment (0))
162 m += measure_length ();
169 Timing_translator::do_post_move_processing()
171 Translator *t = this;
172 Global_translator *global_l =0;
175 t = t->daddy_trans_l_ ;
176 global_l = dynamic_cast<Global_translator*> (t);
180 Moment dt = global_l->now_mom_ - global_l -> prev_mom_;
183 programming_error ("Moving backwards in time");
192 SCM s = get_property ("measurePosition");
193 if (unsmob_moment (s))
195 measposp = *unsmob_moment(s);
199 daddy_trans_l_->set_property ("measurePosition", measposp.make_scm());
204 SCM barn = get_property ("currentBarNumber");
206 if (gh_number_p(barn))
208 b = gh_scm2int (barn);
211 SCM cad = get_property ("timing");
212 bool c= to_boolean (cad );
214 Moment len = measure_length ();
215 while (c && measposp >= len)
221 daddy_trans_l_->set_property ("currentBarNumber", gh_int2scm (b));
222 daddy_trans_l_->set_property ("measurePosition", measposp.make_scm());