lily/axis-group-spanner.cc

   1 /*
   2   axis-group-spanner.cc -- implement Axis_group_spanner
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "axis-group-spanner.hh"
  10 #include "debug.hh"
  11 #include "item.hh"
  12 #include "paper-column.hh"
  13
  14 /** Do stuff if we're not broken. In this case the last and first
  15   columns usually are pre- and postbreak respectively,
  16   so the items from these columns need adjusting.
  17   */
  18 void
  19 Axis_group_spanner::do_break_processing_if_unbroken()
  20 {
  21   Link_array<Score_element> elems = elem_l_arr ();
  22   Line_of_score *my_line = line_l();
  23   for (int i=0; i < elems.size(); i++)
  24     {
  25       if (!elems[i]->line_l())
  26         {
  27           Item * item_l = dynamic_cast<Item*> (elems[i]);
  28           if  (item_l
  29                && item_l->breakable_b ()
  30                && item_l->break_status_dir() == 0)
  31             {
  32               // last two checks are paranoia
  33               Item * broken_item_l =
  34                 item_l->find_prebroken_piece (my_line);
  35               add_element (broken_item_l);
  36             }
  37
  38           Spanner *spanner_l = dynamic_cast<Spanner*> (elems[i]);
  39           if (spanner_l)
  40             {
  41               Spanner *broken_spanner_l =
  42                 spanner_l->find_broken_piece (my_line);
  43               add_element (broken_spanner_l);
  44             }
  45           remove_element (elems[i]);
  46         }
  47
  48     }
  49 }
  50
  51 void
  52 Axis_group_spanner::do_break_processing()
  53 {
  54
  55   bool breaking_self_b = ! Spanner::line_l();
  56   if (!breaking_self_b)
  57     {
  58       do_break_processing_if_unbroken();
  59       Spanner::do_break_processing();
  60       return;
  61     }
  62
  63   break_into_pieces ();
  64   Link_array<Score_element> loose_elems = elem_l_arr ();
  65   remove_all();
  66
  67   for (int i=0; i < loose_elems.size(); i++)
  68     {
  69       Score_element * elt = loose_elems[i];
  70       Line_of_score *elt_line = elt->line_l();
  71
  72       if (! elt_line)
  73         {
  74           /* this piece doesn't know where it belongs.
  75              Find out if it was broken, and use the broken remains
  76              */
  77
  78           Item *it = dynamic_cast <Item *> (elt) ;
  79           if (Spanner * sp =dynamic_cast <Spanner *> (elt))
  80             {
  81               for (int j =0; j < sp->broken_into_l_arr_.size(); j++)
  82                 {
  83                   Line_of_score *l = sp->broken_into_l_arr_[j]->line_l ();
  84
  85                   Axis_group_spanner * my_broken_l
  86                     = dynamic_cast<Axis_group_spanner*>(find_broken_piece (l));
  87
  88                   Spanner * broken_span_l
  89                     = sp->find_broken_piece (l);
  90
  91                   if (broken_span_l)
  92                     my_broken_l->add_element (broken_span_l);
  93                 }
  94             }
  95           else if (it && it->broken_original_b ())
  96             {
  97               // broken items
  98               Direction  j=LEFT;
  99               do
 100                 {
 101                   Item * broken_item = it->find_prebroken_piece (j);
 102                   Line_of_score * item_line_l = broken_item->line_l() ;
 103                   if (! item_line_l)
 104                     continue;
 105
 106                   Axis_group_spanner * v
 107                     = dynamic_cast<Axis_group_spanner*>(find_broken_piece (item_line_l));
 108                   if (v)
 109                     v->add_element (broken_item);
 110                   else
 111                     {
 112                       broken_item->set_elt_property (transparent_scm_sym, SCM_BOOL_T);
 113                       broken_item->set_empty (true);
 114                     }
 115
 116                 }
 117               while (flip(&j) != LEFT);
 118             }
 119         }
 120       else
 121         {
 122           /* this piece *does* know where it belongs.
 123              Put it in appropriate piece of this spanner
 124              */
 125           Axis_group_spanner * my_broken_l
 126             = dynamic_cast<Axis_group_spanner*> (find_broken_piece (elt->line_l()));
 127           my_broken_l->add_element (elt);
 128         }
 129     }
 130
 131   Spanner::do_break_processing();
 132 }
 133
 134 void
 135 Axis_group_spanner::do_print() const
 136 {
 137   Axis_group_element::do_print();
 138
 139   Spanner::do_print ();
 140 }
 141
 142
 143 Interval
 144 Axis_group_spanner::do_width () const
 145 {
 146   return Spanner::do_width ();
 147 }