lily/time-signature-engraver.cc

   1 /*
   2   time_signature-reg.cc -- implement Time_signature_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "time-signature-engraver.hh"
  10 #include "time-signature.hh"
  11 #include "command-request.hh"
  12 #include "timing-engraver.hh"
  13 #include "engraver-group.hh"
  14
  15 Time_signature_engraver::Time_signature_engraver()
  16 {
  17   time_signature_p_ =0;
  18 }
  19
  20 void
  21 Time_signature_engraver::do_process_requests()
  22 {
  23   Translator * result =
  24     daddy_grav_l()->get_simple_translator ("Timing_engraver");  // ugh
  25
  26   if (!result)
  27     {
  28       warning (_ ("lost in time") + ": " + _ ("can't find")
  29         + " Timing_translator");
  30       return ;
  31     }
  32
  33   Timing_engraver * timing_grav_l= dynamic_cast<Timing_engraver *> (result);
  34
  35   Time_signature_change_req *req = timing_grav_l->time_signature_req_l();
  36   if (req)
  37     {
  38       Array<int> args;
  39       args.push (req->beats_i_);
  40       args.push (req->one_beat_i_);
  41
  42       time_signature_p_ = new Time_signature ();
  43       time_signature_p_->args_ = args;
  44       time_signature_p_->break_priority_i_ = 1; // ugh
  45     }
  46
  47
  48   if (time_signature_p_)
  49     announce_element (Score_element_info (time_signature_p_, req));
  50 }
  51
  52 void
  53 Time_signature_engraver::do_pre_move_processing()
  54 {
  55   if (time_signature_p_)
  56     {
  57       Scalar sigstyle = get_property ("timeSignatureStyle", 0);
  58       if (sigstyle.length_i ())
  59         {
  60           time_signature_p_->time_sig_type_str_ = sigstyle;
  61         }
  62
  63       typeset_element (time_signature_p_);
  64       time_signature_p_ =0;
  65     }
  66 }
  67
  68
  69 ADD_THIS_TRANSLATOR(Time_signature_engraver);
  70