2 script-column.cc -- implement Script_column
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "script-column.hh"
11 #include "side-position-interface.hh"
13 #include "pointer-group-interface.hh"
16 Script_column::add_staff_sided (Grob *me, Item *item)
18 SCM p = item->get_property ("script-priority");
19 if (!scm_is_number (p))
22 Pointer_group_interface::add_grob (me, ly_symbol2scm ("scripts"), item);
25 LY_DEFINE (ly_grob_script_priority_less, "ly:grob-script-priority-less",
26 2, 0, 0, (SCM a, SCM b),
27 "Compare two grobs by script priority. For internal use.")
29 Grob *i1 = unsmob_grob (a);
30 Grob *i2 = unsmob_grob (b);
32 SCM p1 = i1->get_property ("script-priority");
33 SCM p2 = i2->get_property ("script-priority");
35 return scm_to_int (p1) < scm_to_int (p2) ? SCM_BOOL_T : SCM_BOOL_F;
38 MAKE_SCHEME_CALLBACK (Script_column, before_line_breaking, 1);
40 Script_column::before_line_breaking (SCM smob)
42 Grob *me = unsmob_grob (smob);
43 Drul_array<SCM> scripts_drul (SCM_EOL, SCM_EOL);
44 Link_array<Grob> staff_sided;
46 extract_grob_set (me, "scripts", scripts);
47 for (int i = 0; i < scripts.size (); i++)
49 Grob *sc = scripts[i];
52 Don't want to consider scripts horizontally next to notes.
54 if (!sc->has_offset_callback (Side_position_interface::aligned_side_proc,
56 staff_sided.push (sc);
59 for (int i = 0; i < staff_sided.size (); i++)
61 Grob *g = staff_sided[i];
62 Direction d = Side_position_interface::get_direction (g);
65 programming_error ("no direction for script");
67 g->set_property ("direction", scm_from_int (d));
70 scripts_drul[d] = scm_cons (g->self_scm (), scripts_drul[d]);
76 SCM ss = scm_reverse_x (scripts_drul[d], SCM_EOL);
77 ss = scm_stable_sort_x (ss, ly_grob_script_priority_less_proc);
80 for (SCM s = ss; scm_is_pair (s); s = scm_cdr (s))
82 Grob *g = unsmob_grob (scm_car (s));
84 Side_position_interface::add_support (g, last);
89 while (flip (&d) != DOWN);
91 return SCM_UNSPECIFIED;
94 ADD_INTERFACE (Script_column, "script-column-interface",
95 "An interface that sorts scripts "
96 "according to their @code{script-priority}",