source file of the GNU LilyPond music typesetter
- (c) 1998--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "separating-group-spanner.hh"
-#include "single-malt-grouping-item.hh"
-#include "p-col.hh"
+#include "separation-item.hh"
+#include "paper-column.hh"
#include "paper-def.hh"
+#include "dimensions.hh"
+#include "group-interface.hh"
-Array<Rod>
-Separating_group_spanner::get_rods () const
+void
+Separating_group_spanner::find_rods (Item * r, SCM next)
{
- Array<Rod> a;
-
- for (int i=0; i < spacing_unit_l_arr_.size () -1; i++)
+ Interval ri (Separation_item::my_width (r));
+ if (ri.empty_b ())
+ return;
+
+ /*
+ This is an inner loop, however, in most cases, the interesting L
+ will just be the first entry of NEXT, making it linear in most of
+ the cases. */
+ for(; gh_pair_p (next); next = ly_cdr (next))
{
- Single_malt_grouping_item *l =spacing_unit_l_arr_[i];
- Single_malt_grouping_item *lb
- = dynamic_cast<Single_malt_grouping_item*>(l->find_prebroken_piece (RIGHT));
- Single_malt_grouping_item *r = spacing_unit_l_arr_[i+1];
- Single_malt_grouping_item *rb
- = dynamic_cast<Single_malt_grouping_item*>(r->find_prebroken_piece (LEFT));
-
- a.push (Rod (spacing_unit_l_arr_[i], spacing_unit_l_arr_[i+1]));
+ Item *l = dynamic_cast<Item*> (unsmob_grob (ly_car( next)));
+ Item *lb = l->find_prebroken_piece (RIGHT);
+
if (lb)
{
- Rod rod(lb, r);
- rod.distance_f_ += padding_f_;
- a.push (rod);
- }
-
- if (rb)
- {
- a.push (Rod (l, rb));
+ Interval li (Separation_item::my_width (lb));
+
+ if (!li.empty_b ())
+ {
+ Rod rod;
+
+ rod.item_l_drul_[LEFT] = lb;
+ rod.item_l_drul_[RIGHT] = r;
+
+ rod.distance_f_ = li[RIGHT] - ri[LEFT];
+
+ rod.columnize ();
+ rod.add_to_cols ();
+ }
}
-
- if (lb && rb)
+
+ Interval li (Separation_item::my_width (l));
+ if (!li.empty_b ())
{
- Rod rod(lb, rb);
- rod.distance_f_ += padding_f_;
- a.push (rod);
+ Rod rod;
+
+ rod.item_l_drul_[LEFT] =l;
+ rod.item_l_drul_[RIGHT]=r;
+
+ rod.distance_f_ = li[RIGHT] - ri[LEFT];
+
+ rod.columnize ();
+ rod.add_to_cols ();
+
+ break;
}
+ else
+ /*
+ this grob doesn't cause a constraint. We look further until we
+ find one that does. */
+ ;
}
-
- return a;
}
-void
-Separating_group_spanner::add_spacing_unit (Single_malt_grouping_item*i)
+MAKE_SCHEME_CALLBACK (Separating_group_spanner,set_spacing_rods_and_seqs,1);
+SCM
+Separating_group_spanner::set_spacing_rods_and_seqs (SCM smob)
{
- spacing_unit_l_arr_.push (i);
- add_dependency (i);
+ set_spacing_rods (smob);
+
+ return SCM_UNSPECIFIED;
}
-void
-Separating_group_spanner::do_substitute_element_pointer (Score_element*o, Score_element*n)
+MAKE_SCHEME_CALLBACK (Separating_group_spanner,set_spacing_rods,1);
+SCM
+Separating_group_spanner::set_spacing_rods (SCM smob)
{
- if (dynamic_cast<Single_malt_grouping_item *> (o))
+ Grob*me = unsmob_grob (smob);
+
+ for (SCM s = me->get_grob_property ("elements"); gh_pair_p (s) && gh_pair_p (ly_cdr (s)); s = ly_cdr (s))
+ {
+ /*
+ Order of elements is reversed!
+ */
+ SCM elt = ly_car (s);
+ Item *r = unsmob_item (elt);
+
+ if (!r)
+ continue;
+
+ Item *rb
+ = dynamic_cast<Item*> (r->find_prebroken_piece (LEFT));
+
+ find_rods (r, ly_cdr (s));
+ if (rb)
+ find_rods (rb, ly_cdr (s));
+ }
+
+#if 0
+ /*
+ TODO; restore this.
+ */
+ /*
+ We've done our job, so we get lost.
+ */
+ for (SCM s = me->get_grob_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
{
- Single_malt_grouping_item*ns = dynamic_cast<Single_malt_grouping_item *> (n);
- spacing_unit_l_arr_.substitute (dynamic_cast<Single_malt_grouping_item *> (o), ns);
+ Item * it =dynamic_cast<Item*> (unsmob_grob (ly_car (s)));
+ if (it && it->broken_b ())
+ {
+ it->find_prebroken_piece (LEFT) ->suicide ();
+ it->find_prebroken_piece (RIGHT)->suicide ();
+ }
+ it->suicide ();
}
+ me->suicide ();
+#endif
+ return SCM_UNSPECIFIED ;
}
-Separating_group_spanner::Separating_group_spanner()
+void
+Separating_group_spanner::add_spacing_unit (Grob* me ,Item*i)
{
- set_elt_property (break_helper_only_scm_sym, SCM_BOOL_T);
- padding_f_ =0.0;
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("elements"), i);
+ me->add_dependency (i);
}
+
+
+
+
+
+ADD_INTERFACE (Separating_group_spanner,"separation-spanner-interface",
+ "Spanner that containing @code{separation-item-interface} grobs to calculate rods",
+ "");