2 separating-group-spanner.cc -- implement Separating_group_spanner
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "separating-group-spanner.hh"
11 #include "single-malt-grouping-item.hh"
12 #include "paper-column.hh"
13 #include "paper-def.hh"
14 #include "dimensions.hh"
17 make_rod (Single_malt_grouping_item *l, Single_malt_grouping_item *r)
21 Interval li (l->my_width ());
22 Interval ri (r->my_width ());
24 rod.item_l_drul_[LEFT] =l;
25 rod.item_l_drul_[RIGHT]=r;
27 if (li.empty_b () || ri.empty_b ())
30 rod.distance_f_ = li[RIGHT] - ri[LEFT];
38 Separating_group_spanner::get_rods () const
42 for (SCM s = get_elt_property ("elements"); gh_pair_p (s) && gh_pair_p (gh_cdr (s)); s = gh_cdr (s))
45 Order of elements is reversed!
47 SCM elt = gh_cadr (s);
48 SCM next_elt = gh_car (s);
50 Single_malt_grouping_item *l = dynamic_cast<Single_malt_grouping_item*> (unsmob_element (elt));
51 Single_malt_grouping_item *r = dynamic_cast<Single_malt_grouping_item*> (unsmob_element ( next_elt));
56 Single_malt_grouping_item *lb
57 = dynamic_cast<Single_malt_grouping_item*>(l->find_prebroken_piece (RIGHT));
59 Single_malt_grouping_item *rb
60 = dynamic_cast<Single_malt_grouping_item*>(r->find_prebroken_piece (LEFT));
62 a.push (make_rod(l, r));
65 Rod rod(make_rod (lb, r));
71 a.push (make_rod (l, rb));
76 Rod rod(make_rod (lb, rb));
82 We've done our job, so we get lost.
84 for (SCM s = get_elt_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
86 Item * it =dynamic_cast<Item*>(unsmob_element (gh_car (s)));
87 if (it && it->broken_b ())
89 it->find_prebroken_piece (LEFT) ->suicide ();
90 it->find_prebroken_piece (RIGHT)->suicide ();
95 ((Separating_group_spanner *)this)->suicide ();
101 Separating_group_spanner::add_spacing_unit (Single_malt_grouping_item*i)
103 set_elt_property ("elements",
104 gh_cons (i->self_scm_,
105 get_elt_property ("elements")));
110 Separating_group_spanner::Separating_group_spanner ()
112 set_elt_property ("elements", SCM_EOL);