lily/separating-group-spanner.cc

   1 /*
   2   separating-group-spanner.cc --  implement Separating_group_spanner
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1998 Han-Wen Nienhuys <hanwen@cs.ruu.nl>
   7
   8  */
   9
  10 #include "separating-group-spanner.hh"
  11 #include "single-malt-grouping-item.hh"
  12 #include "p-col.hh"
  13
  14 Array<Rod>
  15 Separating_group_spanner::get_rods () const
  16 {
  17   Array<Rod> a;
  18
  19   for (int i=0; i < spacing_unit_l_arr_.size () -1; i++)
  20     {
  21       a.push (Rod (spacing_unit_l_arr_[i], spacing_unit_l_arr_[i+1]));
  22       bool lb =spacing_unit_l_arr_[i]->column_l ()->breakable_b_;
  23       if (lb)
  24         {
  25           a.push (Rod ((Single_malt_grouping_item*)
  26                        spacing_unit_l_arr_[i]->find_prebroken_piece (RIGHT),
  27                        spacing_unit_l_arr_[i+1]));
  28         }
  29       bool rb=spacing_unit_l_arr_[i+1]->column_l ()->breakable_b_;
  30       if (rb)
  31         {
  32           a.push (Rod (spacing_unit_l_arr_[i],
  33                        (Single_malt_grouping_item*)
  34                        spacing_unit_l_arr_[i+1]->find_prebroken_piece (LEFT)));
  35         }
  36       if (lb && rb)
  37         {
  38           a.push (Rod ((Single_malt_grouping_item*)
  39                        spacing_unit_l_arr_[i]->find_prebroken_piece (RIGHT),
  40                        (Single_malt_grouping_item*)
  41                        spacing_unit_l_arr_[i+1]->find_prebroken_piece (LEFT)));
  42         }
  43
  44     }
  45
  46   return a;
  47 }
  48
  49 void
  50 Separating_group_spanner::add_spacing_unit (Single_malt_grouping_item*i)
  51 {
  52   spacing_unit_l_arr_.push (i);
  53   add_dependency (i);
  54 }
  55
  56 IMPLEMENT_IS_TYPE_B1(Separating_group_spanner, Spanner);
  57
  58 void
  59 Separating_group_spanner::do_substitute_dependency (Score_elem*o, Score_elem*n)
  60 {
  61   if (o->is_type_b (Single_malt_grouping_item::static_name ()))
  62     {
  63       Single_malt_grouping_item*ns = n ?
  64         (Single_malt_grouping_item*)n->item () : 0;
  65       spacing_unit_l_arr_.substitute ((Single_malt_grouping_item*)o->item (), ns);
  66     }
  67 }
  68