source file of the GNU LilyPond music typesetter
- (c) 1998--2000 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 "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;
+ 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))
+ {
+ Item *l = dynamic_cast<Item*> (unsmob_grob (ly_car( next)));
+ Item *lb = l->find_prebroken_piece (RIGHT);
+
+ 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 (l->my_width ());
- Interval ri (r->my_width ());
+ 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.item_l_drul_[LEFT] =l;
+ rod.item_l_drul_[RIGHT]=r;
- if (li.empty_b () || ri.empty_b ())
- rod.distance_f_ = 0;
- else
- rod.distance_f_ = li[RIGHT] - ri[LEFT];
+ rod.distance_f_ = li[RIGHT] - ri[LEFT];
+
+ rod.columnize ();
+ rod.add_to_cols ();
- rod.columnize ();
- return rod;
+ 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_and_seqs,1);
+SCM
+Separating_group_spanner::set_spacing_rods_and_seqs (SCM smob)
{
- Array<Rod> a;
+ set_spacing_rods (smob);
+
+ return SCM_UNSPECIFIED;
+}
+
+MAKE_SCHEME_CALLBACK (Separating_group_spanner,set_spacing_rods,1);
+SCM
+Separating_group_spanner::set_spacing_rods (SCM smob)
+{
+ 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 (ly_cdr (s)); s = ly_cdr (s))
{
/*
Order of elements is reversed!
*/
- SCM elt = gh_cadr (s);
- SCM next_elt = gh_car (s);
-
- 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));
+ SCM elt = ly_car (s);
+ Item *r = unsmob_item (elt);
- if (!r || !l)
+ if (!r)
continue;
-
- Single_malt_grouping_item *lb
- = dynamic_cast<Single_malt_grouping_item*>(l->find_prebroken_piece (RIGHT));
- Single_malt_grouping_item *rb
- = dynamic_cast<Single_malt_grouping_item*>(r->find_prebroken_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, ly_cdr (s));
if (rb)
- {
- a.push (make_rod (l, rb));
- }
-
- if (lb && rb)
- {
- Rod rod(make_rod (lb, rb));
- a.push (rod);
- }
+ find_rods (rb, ly_cdr (s));
}
+#if 0
+ /*
+ TODO; restore this.
+ */
/*
We've done our job, so we get lost.
*/
- for (SCM s = get_elt_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
+ for (SCM s = me->get_grob_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
{
- Item * it =dynamic_cast<Item*>(unsmob_element (gh_car (s)));
+ Item * it =dynamic_cast<Item*> (unsmob_grob (ly_car (s)));
if (it && it->broken_b ())
{
it->find_prebroken_piece (LEFT) ->suicide ();
}
it->suicide ();
}
-
- ((Separating_group_spanner *)this)->suicide ();
-
- return a;
+ me->suicide ();
+#endif
+ 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_grob (me, ly_symbol2scm ("elements"), i);
+ me->add_dependency (i);
}
-Separating_group_spanner::Separating_group_spanner ()
-{
- set_elt_property ("elements", SCM_EOL);
-}
+
+
+
+ADD_INTERFACE (Separating_group_spanner,"separation-spanner-interface",
+ "Spanner that containing @code{separation-item-interface} grobs to calculate rods",
+ "");