lily/span-brace-engraver.cc

   1 /*
   2   span-brace-engraver.cc -- implement Span_brace_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7            Jan Nieuwenhuizen <jan@digicash.com>
   8 */
   9
  10 #include "span-brace-item.hh"
  11 #include "span-brace-engraver.hh"
  12 #include "vertical-align-spanner.hh"
  13
  14 IMPLEMENT_STATIC_NAME(Span_brace_engraver);
  15 IMPLEMENT_IS_TYPE_B1(Span_brace_engraver,Engraver);
  16 ADD_THIS_ENGRAVER(Span_brace_engraver);
  17
  18 Span_brace_engraver::Span_brace_engraver()
  19 {
  20     span_brace_p_ = 0;
  21     valign_l_ = 0;
  22 }
  23
  24 Span_brace_engraver::~Span_brace_engraver()
  25 {
  26 }
  27
  28 void
  29 Span_brace_engraver::acknowledge_element( Score_elem_info i )
  30 {
  31     if ( i.elem_l_->is_type_b( Bar::static_name() ) ) {
  32         bar_l_arr_.push( (Bar*)i.elem_l_->item() );
  33
  34         if ( bar_l_arr_.size() >= 2 && !span_brace_p_ ) {
  35             span_brace_p_ = new Span_brace_item;
  36             announce_element( Score_elem_info( span_brace_p_, 0 ) );
  37         }
  38     }
  39     else if ( i.elem_l_->is_type_b( Vertical_align_spanner::static_name() )
  40         && i.origin_grav_l_arr_.size() <= 2 )
  41         valign_l_ = (Vertical_align_spanner*)i.elem_l_->spanner();
  42 }
  43
  44 void
  45 Span_brace_engraver::do_pre_move_processing()
  46 {
  47     if ( span_brace_p_ ) {
  48         for ( int i=0; i < bar_l_arr_.size() ; i++ )
  49             span_brace_p_->add( bar_l_arr_[ i ] );
  50         span_brace_p_->set( valign_l_ );
  51         typeset_breakable_item( span_brace_p_ );
  52         span_brace_p_ = 0;
  53     }
  54
  55     bar_l_arr_.clear();
  56 }
  57