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. */
23 Timing_translator::try_music (Music*r)
25 if (dynamic_cast<Barcheck_req*> (r))
34 Timing_translator::process_music()
36 if (check_ && measure_position ())
38 check_->origin ()->warning (_f ("barcheck failed at: %s",
39 measure_position ().str ()));
42 if (!to_boolean (get_property ("barCheckNoSynchronize")))
43 daddy_trans_l_->set_property("measurePosition", zero.smobbed_copy ());
46 SCM fr = get_property ("timeSignatureFraction");
48 if (scm_equal_p (fr, last_time_sig_) == SCM_BOOL_F)
51 set_time_signature ();
57 Timing_translator::stop_translation_timestep()
62 Global_translator *global_l =0;
65 t = t->daddy_trans_l_ ;
66 global_l = dynamic_cast<Global_translator*> (t);
70 /* allbars == ! skipbars */
71 SCM sb = get_property ("skipBars");
72 bool allbars = !to_boolean (sb);
74 // urg: multi bar rests: should always process whole of first bar?
75 SCM tim = get_property ("timing");
76 bool timb = to_boolean (tim);
79 Moment barleft = (measure_length () - measure_position ());
81 if (barleft > Moment (0))
82 global_l->add_moment_to_process (now_mom () + barleft);
87 ADD_THIS_TRANSLATOR(Timing_translator);
90 Timing_translator::initialize()
93 daddy_trans_l_->set_property ("timing" , SCM_BOOL_T);
94 daddy_trans_l_->set_property ("currentBarNumber" , gh_int2scm (1));
95 daddy_trans_l_->set_property ("measurePosition", m.smobbed_copy ());
96 daddy_trans_l_->set_property ("timeSignatureFraction",
97 gh_cons (gh_int2scm (4), gh_int2scm (4)));
99 set_time_signature ();
103 Timing_translator::measure_length () const
105 SCM l = get_property("measureLength");
106 if (unsmob_moment(l))
107 return *unsmob_moment (l);
114 Timing_translator::set_time_signature ()
116 SCM fr = get_property ("timeSignatureFraction");
117 int l = gh_scm2int (gh_car (fr));
118 int o = gh_scm2int (gh_cdr (fr));
120 Moment one_beat = Moment (1)/Moment (o);
121 Moment len = Moment (l) * one_beat;
123 daddy_trans_l_->set_property ("measureLength", len.smobbed_copy ());
124 daddy_trans_l_->set_property ("beatLength", one_beat.smobbed_copy ());
127 Timing_translator::Timing_translator()
130 last_time_sig_ = SCM_BOOL_F;
136 Timing_translator::measure_position () const
138 SCM sm = get_property ("measurePosition");
141 if (unsmob_moment (sm))
143 m = *unsmob_moment(sm);
144 while (m < Moment (0))
145 m += measure_length ();
152 Timing_translator::start_translation_timestep()
155 Translator *t = this;
156 Global_translator *global_l =0;
159 t = t->daddy_trans_l_ ;
160 global_l = dynamic_cast<Global_translator*> (t);
164 Moment dt = global_l->now_mom_ - global_l -> prev_mom_;
167 programming_error ("Moving backwards in time");
176 SCM s = get_property ("measurePosition");
177 if (unsmob_moment (s))
179 measposp = *unsmob_moment(s);
183 daddy_trans_l_->set_property ("measurePosition", measposp.smobbed_copy());
188 SCM barn = get_property ("currentBarNumber");
190 if (gh_number_p(barn))
192 b = gh_scm2int (barn);
195 SCM cad = get_property ("timing");
196 bool c= to_boolean (cad );
198 Moment len = measure_length ();
199 while (c && measposp >= len)
205 daddy_trans_l_->set_property ("currentBarNumber", gh_int2scm (b));
206 daddy_trans_l_->set_property ("measurePosition", measposp.smobbed_copy());