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 "note-head.hh"
16 Tie_column::Tie_column (SCM s)
19 set_elt_pointer ("ties", SCM_EOL);
20 set_extent_callback (0, X_AXIS);
21 set_extent_callback (0, Y_AXIS);
25 Tie_column::add_tie (Tie *s)
27 Pointer_group_interface g (this, "ties");
30 set_bound (LEFT, s->head (LEFT));
31 set_bound (RIGHT, s->head (RIGHT));
34 Pointer_group_interface (this, "ties").add_element (s);
35 s->add_dependency (this);
40 tie_compare (Tie* const & s1,
43 return sign (s1->position_f () - s2->position_f());
50 In normal chord cases, the outer ties point outwards, and the
51 direction of the rest is determined by their staff position.
53 Ross forgets about the tie that is *on* the middle staff line. We
54 assume it goes UP. (TODO: make this settable) */
56 Tie_column::set_directions ()
59 Pointer_group_interface__extract_elements (this, (Tie*)0, "ties");
62 Direction d = directional_element (this).get ();
66 for (int i = s.size (); i--;)
67 directional_element (s[i]).set (d);
73 directional_element (s[0]).set (s[0]->get_default_dir ());
78 directional_element (s[0]).set (DOWN);
80 directional_element (s.pop ()).set (UP);
82 for (int i=s.size(); i--; )
84 Real p = s[i]->position_f ();
85 Direction d = (Direction) sign (p);
88 directional_element (s[i]).set (d);
93 GLUE_SCORE_ELEMENT(Tie_column,after_line_breaking);
95 Tie_column::member_after_line_breaking ()