2 time_signature-reg.cc -- implement Time_signature_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "time-signature.hh"
10 #include "command-request.hh"
11 #include "engraver.hh"
13 #include "timing-engraver.hh"
14 #include "engraver-group-engraver.hh"
18 generate time_signatures.
20 class Time_signature_engraver : public Engraver {
22 virtual void do_process_music();
23 virtual void do_pre_move_processing();
25 VIRTUAL_COPY_CONS(Translator);
26 Item * time_signature_p_;
28 Time_signature_engraver();
32 Time_signature_engraver::Time_signature_engraver()
38 Time_signature_engraver::do_process_music()
42 this should use properties.
45 daddy_grav_l()->get_simple_translator ("Timing_engraver"); // ugh
49 warning (_ ("lost in time:"));
50 warning (_f ("can't find: `%s'", " Timing_translator"));
54 Timing_engraver * timing_grav_l= dynamic_cast<Timing_engraver *> (result);
56 Time_signature_change_req *req = timing_grav_l->time_signature_req_l();
59 time_signature_p_ = new Item (get_property ("basicTimeSignatureProperties"));
60 time_signature_p_->set_elt_property ("fraction",
61 gh_cons (gh_int2scm (req->beats_i_),
62 gh_int2scm (req->one_beat_i_)));
66 if (time_signature_p_)
67 announce_element (Score_element_info (time_signature_p_, req));
71 Time_signature_engraver::do_pre_move_processing()
73 if (time_signature_p_)
75 typeset_element (time_signature_p_);
81 ADD_THIS_TRANSLATOR(Time_signature_engraver);