2 script-column.cc -- implement Script_column
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "script-column.hh"
10 #include "side-position-interface.hh"
12 #include "group-interface.hh"
15 Script_column::add_staff_sided (Grob *me, Item *i)
17 SCM p = i->get_property ("script-priority");
18 if (!ly_c_number_p (p))
21 Pointer_group_interface::add_grob (me, ly_symbol2scm ("scripts"),i);
23 me->add_dependency (i);
26 LY_DEFINE (ly_grob_script_priority_less, "ly:grob-script-priority-less",
27 2, 0, 0, (SCM a, SCM b),
28 "Compare two grobs by script priority. For internal use.")
30 Grob *i1 = unsmob_grob (a);
31 Grob *i2 = unsmob_grob (b);
33 SCM p1 = i1->get_property ("script-priority");
34 SCM p2 = i2->get_property ("script-priority");
36 return ly_scm2int (p1) < ly_scm2int (p2) ? SCM_BOOL_T : SCM_BOOL_F;
39 MAKE_SCHEME_CALLBACK (Script_column, before_line_breaking, 1);
41 Script_column::before_line_breaking (SCM smob)
43 Grob* me = unsmob_grob (smob);
44 Drul_array<SCM> scripts (SCM_EOL, SCM_EOL);
45 Link_array<Grob> staff_sided;
47 for (SCM s = me->get_property ("scripts"); ly_c_pair_p (s); s = ly_cdr (s))
49 Grob *sc = unsmob_grob (ly_car (s));
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_int2num (d));
70 scripts[d] = scm_cons (g->self_scm (), scripts[d]);
76 SCM ss = scm_reverse_x (scripts[d], SCM_EOL);
77 ss = scm_stable_sort_x (ss, ly_grob_script_priority_less_proc);
80 for (SCM s = ss; ly_c_pair_p (s); s = ly_cdr (s))
82 Grob *g = unsmob_grob (ly_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}",