2 script-column.cc -- implement Script_column
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2002 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_grob_property ("script-priority");
21 Pointer_group_interface::add_grob (me, ly_symbol2scm ("scripts"),i);
23 me->add_dependency (i);
26 LY_DEFINE(grob_script_priority_less,
27 "ly-grob-script-priority-less", 2, 0, 0,
29 "Compare two grobs by script priority. For internal use.")
31 Grob * i1 = unsmob_grob (a);
32 Grob* i2 = unsmob_grob (b);
34 SCM p1 = i1->get_grob_property ("script-priority");
35 SCM p2 = i2->get_grob_property ("script-priority");
37 return gh_scm2int (p1) < gh_scm2int (p2) ? SCM_BOOL_T : SCM_BOOL_F;
42 MAKE_SCHEME_CALLBACK (Script_column,before_line_breaking,1);
44 Script_column::before_line_breaking (SCM smob)
46 Grob* me = unsmob_grob (smob);
47 Drul_array<SCM> scripts (SCM_EOL, SCM_EOL);
48 Link_array<Grob> staff_sided
49 = Pointer_group_interface__extract_grobs (me, (Grob*)0, "scripts");
51 for (int i=0; i < staff_sided.size (); i++)
53 Grob* g = staff_sided[i];
54 Direction d = Side_position_interface::get_direction (g);
57 programming_error ( "No direction for script?");
59 g->set_grob_property ("direction", gh_int2scm (d));
62 scripts[d] = scm_cons (g->self_scm(), scripts[d]);
67 SCM ss = scm_reverse_x (scripts[d], SCM_EOL);
69 ss = scm_stable_sort_x (ss, grob_script_priority_less_proc);
72 for (SCM s = ss; gh_pair_p (s); s = gh_cdr (s))
74 Grob* g = unsmob_grob (gh_car (s));
76 Side_position_interface::add_support (g,last);
81 } while (flip (&d) != DOWN);
83 return SCM_UNSPECIFIED;
87 ADD_INTERFACE (Script_column,"script-column-interface",
88 "An interface that sorts scripts according to their @code{script-priority}",