lily/span-bar-engraver.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--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "span-bar.hh"
  10 #include "span-bar-engraver.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
  26 void
  27 Span_bar_engraver::do_creation_processing ()
  28 {
  29 }
  30
  31 void
  32 Span_bar_engraver::do_removal_processing ()
  33 {
  34 }
  35
  36 void
  37 Span_bar_engraver::acknowledge_element (Score_element_info i)
  38 {
  39   int depth = i.origin_grav_l_arr_.size();
  40   if (depth > 1
  41       && dynamic_cast<Bar *> (i.elem_l_))
  42     {
  43       bar_l_arr_.push (dynamic_cast<Bar *> (i.elem_l_));
  44
  45       if (bar_l_arr_.size() >= 2 && !spanbar_p_)
  46         /*
  47           hmm, i do want a bracket with one staff some times, but not always
  48           if (bar_l_arr_.size() >= 1 && !spanbar_p_)
  49
  50           --jcn
  51         */
  52
  53         /*
  54
  55           use a property?  get_property ("singleStaffBracket") ?
  56
  57           --hwn
  58          */
  59         {
  60           spanbar_p_ = get_span_bar_p();
  61           announce_element (Score_element_info (spanbar_p_,0));
  62           spanbar_p_-> type_str_ = bar_l_arr_[0]->type_str_;
  63         }
  64     }
  65   else if  (dynamic_cast<Vertical_align_spanner *> (i.elem_l_)
  66             && i.origin_grav_l_arr_.size() <= 2)
  67     {
  68       valign_l_ = dynamic_cast<Vertical_align_spanner *> (i.elem_l_);
  69     }
  70 }
  71
  72 void
  73 Span_bar_engraver::do_pre_move_processing()
  74 {
  75   if (spanbar_p_)
  76     {
  77       for (int i=0; i < bar_l_arr_.size() ; i++)
  78         spanbar_p_->add_bar (bar_l_arr_[i]);
  79       spanbar_p_->set_align (valign_l_);
  80       typeset_element (spanbar_p_);
  81       spanbar_p_ =0;
  82     }
  83   bar_l_arr_.set_size (0);
  84 }
  85
  86
  87
  88 ADD_THIS_TRANSLATOR(Span_bar_engraver);