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 ());
82 Timing_translator::do_pre_move_processing()
84 timing_req_l_arr_
.set_size (0);
86 Global_translator
*global_l
=0;
89 t
= t
->daddy_trans_l_
;
90 global_l
= dynamic_cast<Global_translator
*> (t
);
94 /* allbars == ! skipbars */
95 SCM sb
= get_property ("skipBars", 0);
96 bool allbars
= !(gh_boolean_p (sb
)&&gh_scm2bool (sb
));
98 // urg: multi bar rests: should always process whole of first bar?
99 SCM tim
= get_property ("timing", 0);
100 bool timb
= to_boolean (tim
);
103 Moment barleft
= (measure_length () - measure_position ());
105 if (barleft
> Moment (0))
106 global_l
->add_moment_to_process (now_mom () + barleft
);
111 ADD_THIS_TRANSLATOR(Timing_translator
);
114 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",
119 (new Moment
)->smobify_self());
120 daddy_trans_l_
->set_property ("oneBeat",
121 (new Moment (1,4))->smobify_self ());
122 daddy_trans_l_
->set_property("measureLength",
123 (new Moment (1))->smobify_self());
127 Timing_translator::measure_length () const
129 SCM l
= get_property("measureLength",0);
130 if (SMOB_IS_TYPE_B(Moment
, l
))
131 return *SMOB_TO_TYPE (Moment
, l
);
138 Timing_translator::get_time_signature (int *n
, int *d
) const
140 Moment
one_beat (1,4);
141 SCM one
= get_property ("beatLength",0);
142 if (SMOB_IS_TYPE_B (Moment
, one
))
143 one_beat
= *SMOB_TO_TYPE (Moment
, one
);
144 *n
= measure_length () / one_beat
;
145 *d
= one_beat
.den_i ();
150 Timing_translator::set_time_signature (int l
, int o
)
152 Moment one_beat
= Moment (1)/Moment (o
);
153 Moment len
= Moment (l
) * one_beat
;
154 daddy_trans_l_
->set_property ("measureLength",
155 (new Moment (len
))->smobify_self ());
156 daddy_trans_l_
->set_property ("beatength",
157 (new Moment (one_beat
))->smobify_self ());
160 Timing_translator::Timing_translator()
166 Timing_translator::measure_position () const
168 SCM sm
= get_property ("measurePosition",0);
171 if (SMOB_IS_TYPE_B (Moment
, sm
))
173 m
= *SMOB_TO_TYPE (Moment
, sm
);
174 while (m
< Moment (0))
175 m
+= measure_length ();
182 Timing_translator::do_post_move_processing()
184 Translator
*t
= this;
185 Global_translator
*global_l
=0;
188 t
= t
->daddy_trans_l_
;
189 global_l
= dynamic_cast<Global_translator
*> (t
);
193 Moment dt
= global_l
->now_mom_
- global_l
-> prev_mom_
;
196 programming_error ("Moving backwards in time");
203 Moment
* measposp
=0;
205 SCM s
= get_property ("measurePosition", 0);
206 if (SMOB_IS_TYPE_B (Moment
, s
))
208 measposp
= SMOB_TO_TYPE (Moment
,s
);
212 measposp
= new Moment
;
213 daddy_trans_l_
->set_property ("measurePosition", measposp
->smobify_self ());
217 // don't need to set_property
219 Translator_group
* tr
=daddy_trans_l_
;
220 SCM barn
= get_property ("currentBarNumber", &tr
);
222 if (gh_number_p(barn
))
224 b
= gh_scm2int (barn
);
227 SCM cad
= get_property ("timing", 0);
228 bool c
= to_boolean (cad
);
230 Moment len
= measure_length ();
231 while (c
&& *measposp
>= len
)
237 tr
->set_property ("currentBarNumber", gh_int2scm (b
));