lily/pointer-group-interface.cc

   1 /*
   2   pointer-group-interface.cc -- implement Pointer_group_interface
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "pointer-group-interface.hh"
  10
  11 #include "lily-proto.hh"
  12 #include "item.hh"
  13 #include "grob-array.hh"
  14 #include "grob.hh"
  15
  16 int
  17 Pointer_group_interface::count (Grob *me, SCM sym)
  18 {
  19   Grob_array *arr = unsmob_grob_array (me->internal_get_object (sym));
  20   return arr ? arr->size () : 0;
  21 }
  22
  23 void
  24 Pointer_group_interface::add_grob (Grob *me, SCM sym, SCM p)
  25 {
  26   add_grob (me, sym, unsmob_grob (p));
  27 }
  28
  29 void
  30 Pointer_group_interface::set_ordered (Grob *me, SCM sym, bool ordered)
  31 {
  32   Grob_array *arr = get_grob_array (me, sym);
  33   arr->set_ordered (ordered);
  34 }
  35
  36 Grob_array *
  37 Pointer_group_interface::get_grob_array (Grob *me, SCM sym)
  38 {
  39   SCM scm_arr = me->internal_get_object (sym);
  40   Grob_array *arr = unsmob_grob_array (scm_arr);
  41   if (!arr)
  42     {
  43       scm_arr = Grob_array::make_array ();
  44       arr = unsmob_grob_array (scm_arr);
  45       me->set_object (sym, scm_arr);
  46     }
  47   return arr;
  48 }
  49
  50 void
  51 Pointer_group_interface::add_grob (Grob *me, SCM sym, Grob *p)
  52 {
  53   Grob_array *arr = get_grob_array (me, sym);
  54   arr->add (p);
  55 }
  56
  57 void
  58 Pointer_group_interface::add_unordered_grob (Grob *me, SCM sym, Grob *p)
  59 {
  60   Grob_array *arr = get_grob_array (me, sym);
  61   arr->add (p);
  62   arr->set_ordered (false);
  63 }
  64
  65 static vector<Grob*> empty_array;
  66
  67 vector<Grob*> const &
  68 ly_scm2link_array (SCM x)
  69 {
  70   Grob_array *arr = unsmob_grob_array (x);
  71   return arr ? arr->array () : empty_array;
  72 }
  73
  74 vector<Grob*> const &
  75 internal_extract_grob_array (Grob const *elt, SCM symbol)
  76 {
  77   return ly_scm2link_array (elt->internal_get_object (symbol));
  78 }
  79
  80 vector<Item*>
  81 internal_extract_item_array (Grob const *elt, SCM symbol)
  82 {
  83   Grob_array *arr = unsmob_grob_array (elt->internal_get_object (symbol));
  84   vector<Item*> items;
  85   for (vsize i = 0; arr && i < arr->size (); i++)
  86     items.push_back (arr->item (i));
  87
  88   return items;
  89 }