lily/bar-number-grav.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--1998 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9
  10 #include "bar-number-grav.hh"
  11 #include "script.hh"
  12 #include "text-def.hh"
  13 #include "command-request.hh"
  14 #include "bar.hh"
  15 #include "stem.hh"
  16 #include "time-description.hh"
  17
  18 Bar_number_engraver::Bar_number_engraver()
  19 {
  20   script_p_ =0;
  21 }
  22
  23 static Command_script_req dummy;
  24 static Stem support;
  25
  26 void
  27 Bar_number_engraver::acknowledge_element (Score_elem_info i)
  28 {
  29   if (i.origin_grav_l_arr_.size() == 1 &&
  30       i.elem_l_->is_type_b (Bar::static_name()) && !script_p_)
  31     {
  32       Time_description const * time = get_staff_info().time_C_;
  33       if (!time || time->cadenza_b_)
  34         return ;
  35
  36       script_p_ = new Script;
  37       Text_def *td_p =new Text_def;
  38       td_p->text_str_ = time->bars_i_;
  39       td_p->align_i_ = LEFT;
  40
  41       script_p_->specs_l_ = td_p;
  42       script_p_->breakable_b_ = true;
  43
  44       // ugh, howto move this up?
  45       script_p_->dir_ = UP;
  46 ////      script_p_->y_ += 2;
  47       script_p_->y_ = 10;
  48
  49       support.dir_ = UP;
  50       support.set_stemend (10);
  51       script_p_->set_stem (&support);
  52
  53       announce_element (Score_elem_info (script_p_, &dummy));
  54     }
  55 }
  56
  57 void
  58 Bar_number_engraver::do_pre_move_processing()
  59 {
  60   if (script_p_)
  61     {
  62       typeset_element (script_p_);
  63       script_p_ =0;
  64     }
  65 }
  66
  67 IMPLEMENT_IS_TYPE_B1(Bar_number_engraver,Engraver);
  68 ADD_THIS_TRANSLATOR(Bar_number_engraver);