2 tie-column.cc -- implement Tie_column
4 source file of the GNU LilyPond music typesetter
6 (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "tie-column.hh"
11 #include "group-interface.hh"
13 #include "directional-element-interface.hh"
14 #include "rhythmic-head.hh"
16 Tie_column::Tie_column (SCM s)
22 Tie_column::set_interface (Score_element*me)
24 me-> set_elt_property ("ties", SCM_EOL);
25 me->set_extent_callback (0, X_AXIS);
26 me->set_extent_callback (0, Y_AXIS);
30 Tie_column::add_tie (Score_element*me,Tie *s)
32 Pointer_group_interface g (me, "ties");
35 dynamic_cast<Spanner*> (me)->set_bound (LEFT, Tie::head (s,LEFT));
36 dynamic_cast<Spanner*> (me)->set_bound (RIGHT, Tie::head (s,RIGHT));
39 Pointer_group_interface (me, "ties").add_element (s);
40 s->add_dependency (me);
45 tie_compare (Tie* const & s1,
48 return sign (Tie::position_f (s1) - Tie::position_f(s2));
55 In normal chord cases, the outer ties point outwards, and the
56 direction of the rest is determined by their staff position.
58 Ross forgets about the tie that is *on* the middle staff line. We
59 assume it goes UP. (TODO: make me settable) */
61 Tie_column::set_directions (Score_element*me)
63 Link_array<Tie> ties =
64 Pointer_group_interface__extract_elements (me, (Tie*)0, "ties");
67 Direction d = Directional_element_interface (me).get ();
71 for (int i = ties.size (); i--;)
74 Directional_element_interface (t).set (d);
79 if (ties.size () == 1)
82 Directional_element_interface (t).set (Tie::get_default_dir (t));
86 ties.sort (tie_compare);
87 Directional_element_interface tie0(ties[0]);
91 Directional_element_interface tietop(ties.pop ());
94 for (int i=ties.size(); i--; )
97 Real p = Tie::position_f (t);
98 Direction d = (Direction) sign (p);
101 Directional_element_interface (t).set (d);
106 MAKE_SCHEME_CALLBACK(Tie_column,after_line_breaking);
108 Tie_column::after_line_breaking (SCM smob)
110 set_directions (unsmob_element (smob));
111 return SCM_UNDEFINED;