2 timing-translator.cc -- implement Timing_translator
5 source file of the GNU LilyPond music typesetter
7 (c) 1997--2001 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. */
22 Timing_translator::try_music (Music*r)
24 if (dynamic_cast<Barcheck_req*> (r))
33 Timing_translator::process_music ()
35 if (check_ && measure_position ().main_part_)
37 check_->origin ()->warning (_f ("barcheck failed at: %s",
38 measure_position ().str ()));
41 if (!to_boolean (get_property ("barCheckNoSynchronize")))
42 daddy_trans_l_->set_property ("measurePosition", zero.smobbed_copy ());
47 Timing_translator::stop_translation_timestep ()
52 Global_translator *global_l =0;
55 t = t->daddy_trans_l_ ;
56 global_l = dynamic_cast<Global_translator*> (t);
60 /* allbars == ! skipbars */
61 SCM sb = get_property ("skipBars");
62 bool allbars = !to_boolean (sb);
64 // urg: multi bar rests: should always process whole of first bar?
65 SCM tim = get_property ("timing");
66 bool timb = to_boolean (tim);
69 Moment barleft = (measure_length () - measure_position ());
71 if (barleft > Moment (0))
72 global_l->add_moment_to_process (now_mom () + barleft);
77 ADD_THIS_TRANSLATOR (Timing_translator);
80 Timing_translator::initialize ()
83 daddy_trans_l_->set_property ("timing" , SCM_BOOL_T);
84 daddy_trans_l_->set_property ("currentBarNumber" , gh_int2scm (1));
85 daddy_trans_l_->set_property ("measurePosition", m.smobbed_copy ());
86 daddy_trans_l_->set_property ("timeSignatureFraction",
87 gh_cons (gh_int2scm (4), gh_int2scm (4)));
89 daddy_trans_l_->set_property ("measureLength", Moment (1).smobbed_copy ());
90 daddy_trans_l_->set_property ("beatLength", Moment (1,4).smobbed_copy ());
94 Timing_translator::measure_length () const
96 SCM l = get_property ("measureLength");
97 if (unsmob_moment (l))
98 return unsmob_moment (l)->main_part_;
103 Timing_translator::Timing_translator ()
109 Timing_translator::measure_position () const
111 SCM sm = get_property ("measurePosition");
114 if (unsmob_moment (sm))
116 m = *unsmob_moment (sm);
117 while (m.main_part_ < Rational (0))
118 m.main_part_ += measure_length ();
125 Timing_translator::start_translation_timestep ()
128 Translator *t = this;
129 Global_translator *global_l =0;
132 t = t->daddy_trans_l_ ;
133 global_l = dynamic_cast<Global_translator*> (t);
137 Moment dt = global_l->now_mom_ - global_l -> prev_mom_;
140 programming_error ("Moving backwards in time");
149 SCM s = get_property ("measurePosition");
150 if (unsmob_moment (s))
152 measposp = *unsmob_moment (s);
156 daddy_trans_l_->set_property ("measurePosition", measposp.smobbed_copy ());
161 SCM barn = get_property ("currentBarNumber");
163 if (gh_number_p (barn))
165 b = gh_scm2int (barn);
168 SCM cad = get_property ("timing");
169 bool c= to_boolean (cad);
171 Rational len = measure_length ();
172 while (c && measposp.main_part_ >= len)
174 measposp.main_part_ -= len;
178 daddy_trans_l_->set_property ("currentBarNumber", gh_int2scm (b));
179 daddy_trans_l_->set_property ("measurePosition", measposp.smobbed_copy ());