source file of the GNU LilyPond music typesetter
- (c) 1998--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "separating-group-spanner.hh"
-#include "single-malt-grouping-item.hh"
+#include "separation-item.hh"
#include "paper-column.hh"
#include "paper-def.hh"
#include "dimensions.hh"
+#include "group-interface.hh"
-static Rod
-make_rod (Single_malt_grouping_item *l, Single_malt_grouping_item *r)
+void
+Separating_group_spanner::find_rods (Item * r, SCM next)
{
- Rod rod;
- rod.item_l_drul_[LEFT] =l;
- rod.item_l_drul_[RIGHT]=r;
+ Interval ri (Separation_item::my_width (r));
+ if (ri.empty_b ())
+ return;
- Interval li (l->my_width ());
- Interval ri (r->my_width ());
-
- if (li.empty_b () || ri.empty_b ())
- rod.distance_f_ = 0;
- else
- rod.distance_f_ = li[RIGHT] - ri[LEFT];
+ /*
+ 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 = gh_cdr (next))
+ {
+ Item *l = dynamic_cast<Item*> (unsmob_grob (gh_car( next)));
+ Item *lb = l->find_prebroken_piece (RIGHT);
- return rod;
+ if (lb)
+ {
+ 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 ();
+ }
+ }
+
+ Interval li (Separation_item::my_width (l));
+ if (!li.empty_b ())
+ {
+ 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. */
+ ;
+ }
}
-
-Array<Rod>
-Separating_group_spanner::get_rods () const
+MAKE_SCHEME_CALLBACK (Separating_group_spanner,set_spacing_rods,1);
+SCM
+Separating_group_spanner::set_spacing_rods (SCM smob)
{
- Array<Rod> a;
+ Grob*me = unsmob_grob (smob);
- for (SCM s = get_elt_property ("elements"); gh_pair_p (s) && gh_pair_p (gh_cdr (s)); s = gh_cdr (s))
+ for (SCM s = me->get_grob_property ("elements"); gh_pair_p (s) && gh_pair_p (gh_cdr (s)); s = gh_cdr (s))
{
/*
Order of elements is reversed!
*/
- SCM elt = gh_cadr (s);
- SCM next_elt = gh_car (s);
+ SCM elt = gh_car (s);
+ Item *r = dynamic_cast<Item*> (unsmob_grob (elt));
- Single_malt_grouping_item *l = dynamic_cast<Single_malt_grouping_item*> (unsmob_element (elt));
- Single_malt_grouping_item *r = dynamic_cast<Single_malt_grouping_item*> (unsmob_element ( next_elt));
-
- if (!r || !l)
+ if (!r)
continue;
-
- Single_malt_grouping_item *lb
- = dynamic_cast<Single_malt_grouping_item*>(l->find_broken_piece (RIGHT));
- Single_malt_grouping_item *rb
- = dynamic_cast<Single_malt_grouping_item*>(r->find_broken_piece (LEFT));
-
- a.push (make_rod(l, r));
- if (lb)
- {
- Rod rod(make_rod (lb, r));
- a.push (rod);
- }
+ Item *rb
+ = dynamic_cast<Item*> (r->find_prebroken_piece (LEFT));
+ find_rods (r, gh_cdr (s));
if (rb)
+ find_rods (rb, gh_cdr (s));
+ }
+
+ /*
+ We've done our job, so we get lost.
+ */
+ for (SCM s = me->get_grob_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
+ {
+ Item * it =dynamic_cast<Item*> (unsmob_grob (gh_car (s)));
+ if (it && it->broken_b ())
{
- a.push (make_rod (l, rb));
- }
-
- if (lb && rb)
- {
- Rod rod(make_rod (lb, rb));
- a.push (rod);
+ it->find_prebroken_piece (LEFT) ->suicide ();
+ it->find_prebroken_piece (RIGHT)->suicide ();
}
+ it->suicide ();
}
-
- return a;
+ me->suicide ();
+ return SCM_UNSPECIFIED ;
}
void
-Separating_group_spanner::add_spacing_unit (Single_malt_grouping_item*i)
+Separating_group_spanner::add_spacing_unit (Grob* me ,Item*i)
{
- set_elt_property ("elements",
- gh_cons (i->self_scm_,
- get_elt_property ("elements")));
- add_dependency (i);
+ Pointer_group_interface::add_element (me, "elements",i);
+ me->add_dependency (i);
}
-Separating_group_spanner::Separating_group_spanner ()
+void
+Separating_group_spanner::set_interface (Grob*)
{
- set_elt_property ("elements", SCM_EOL);
+}
+
+bool
+Separating_group_spanner::has_interface (Grob*)
+{//todo
+ assert (false);
}