lily/bar-number-engraver.cc

   1 /*
   2   bar-number-grav.cc -- implement Bar_number_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
  10 #include "bar-number-engraver.hh"
  11 #include "timing-translator.hh"
  12 #include "timing-engraver.hh"
  13 #include "engraver-group-engraver.hh"
  14 #include "text-item.hh"
  15
  16 Bar_number_engraver::Bar_number_engraver()
  17 {
  18   axis_ = Y_AXIS;
  19   type_ = "barNumber";
  20   visibility_lambda_
  21     = ly_eval_str ("postbreak-only-visibility");
  22 }
  23
  24 void
  25 Bar_number_engraver::do_process_requests ()
  26 {
  27   Translator *tr = daddy_grav_l ()->get_simple_translator ("Timing_engraver");
  28   Timing_translator *time = dynamic_cast<Timing_translator*>(tr);
  29
  30   // todo include (&&!time->cadenza_b_ )
  31   SCM bn = get_property("currentBarNumber",0);
  32
  33   if (gh_number_p (bn) &&
  34       !time->measure_position () && now_mom () > Moment (0))
  35     {
  36       create_items (0);
  37
  38       // guh.
  39       text_p_->set_elt_property ("text",
  40                                  ly_str02scm (to_str (gh_scm2int (bn)).ch_C()));
  41
  42     }
  43 }
  44
  45 ADD_THIS_TRANSLATOR(Bar_number_engraver);