lily/span-bar-grav.cc

   1 /*
   2   span-bar-grav.cc -- implement Span_bar_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "span-bar.hh"
  10 #include "span-bar-grav.hh"
  11 #include "vertical-align-spanner.hh"
  12
  13 Span_bar_engraver::Span_bar_engraver()
  14 {
  15   spanbar_p_ =0;
  16   valign_l_ =0;
  17 }
  18
  19 Span_bar*
  20 Span_bar_engraver::get_span_bar_p() const
  21 {
  22   return new Span_bar;
  23 }
  24
  25 void
  26 Span_bar_engraver::acknowledge_element (Score_elem_info i)
  27 {
  28   int depth = i.origin_grav_l_arr_.size();
  29   if (depth > 1
  30       && i.elem_l_->is_type_b (Bar::static_name()))
  31     {
  32       bar_l_arr_.push ((Bar*)i.elem_l_->item());
  33
  34       if (bar_l_arr_.size() >= 2 && !spanbar_p_)
  35         {
  36           spanbar_p_ = get_span_bar_p();
  37           announce_element (Score_elem_info (spanbar_p_,0));
  38           spanbar_p_-> type_str_ = bar_l_arr_[0]->type_str_;
  39         }
  40     }
  41   else if  (i.elem_l_->is_type_b (Vertical_align_spanner::static_name())
  42             && i.origin_grav_l_arr_.size() <= 2)
  43     {
  44       valign_l_ = (Vertical_align_spanner*)i.elem_l_->spanner();
  45     }
  46 }
  47
  48 void
  49 Span_bar_engraver::do_pre_move_processing()
  50 {
  51   if (spanbar_p_)
  52     {
  53       for (int i=0; i < bar_l_arr_.size() ; i++)
  54         spanbar_p_->add (bar_l_arr_[i]);
  55       spanbar_p_->set (valign_l_);
  56       typeset_element (spanbar_p_);
  57       spanbar_p_ =0;
  58     }
  59   bar_l_arr_.set_size (0);
  60
  61 }
  62
  63
  64 IMPLEMENT_IS_TYPE_B1(Span_bar_engraver,Engraver);
  65 ADD_THIS_TRANSLATOR(Span_bar_engraver);