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 "separation-item.hh"
12 #include "paper-column.hh"
13 #include "paper-def.hh"
14 #include "dimensions.hh"
15 #include "group-interface.hh"
18 make_rod (Item *l, Item *r)
22 Interval li (Separation_item::my_width (l));
23 Interval ri (Separation_item::my_width (r));
25 rod.item_l_drul_[LEFT] =l;
26 rod.item_l_drul_[RIGHT]=r;
28 if (li.empty_b () || ri.empty_b ())
31 rod.distance_f_ = li[RIGHT] - ri[LEFT];
39 Separating_group_spanner::get_rods () const
43 for (SCM s = get_elt_property ("elements"); gh_pair_p (s) && gh_pair_p (gh_cdr (s)); s = gh_cdr (s))
46 Order of elements is reversed!
48 SCM elt = gh_cadr (s);
49 SCM next_elt = gh_car (s);
51 Item *l = dynamic_cast<Item*> (unsmob_element (elt));
52 Item *r = dynamic_cast<Item*> (unsmob_element ( next_elt));
58 = dynamic_cast<Item*>(l->find_prebroken_piece (RIGHT));
61 = dynamic_cast<Item*>(r->find_prebroken_piece (LEFT));
63 a.push (make_rod(l, r));
66 Rod rod(make_rod (lb, r));
72 a.push (make_rod (l, rb));
77 Rod rod(make_rod (lb, rb));
83 We've done our job, so we get lost.
85 for (SCM s = get_elt_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
87 Item * it =dynamic_cast<Item*>(unsmob_element (gh_car (s)));
88 if (it && it->broken_b ())
90 it->find_prebroken_piece (LEFT) ->suicide ();
91 it->find_prebroken_piece (RIGHT)->suicide ();
96 ((Separating_group_spanner *)this)->suicide ();
102 Separating_group_spanner::add_spacing_unit (Score_element* me ,Item*i)
104 Pointer_group_interface (me, "elements").add_element (i);
105 me->add_dependency (i);
109 Separating_group_spanner::Separating_group_spanner (SCM s)
112 set_elt_property ("elements", SCM_EOL);