2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1999--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include "script-column.hh"
22 #include "accidental-placement.hh"
23 #include "arpeggio.hh"
24 #include "directional-element-interface.hh"
25 #include "side-position-interface.hh"
28 #include "pointer-group-interface.hh"
32 typedef map<Grob *, vector <Grob *> > Grob_scripts_map;
35 Script_column::add_side_positioned (Grob *me, Grob *script)
37 SCM p = script->get_property ("script-priority");
38 if (!scm_is_number (p))
41 Pointer_group_interface::add_grob (me, ly_symbol2scm ("scripts"), script);
42 script->set_object ("script-column", me->self_scm ());
45 LY_DEFINE (ly_grob_script_priority_less, "ly:grob-script-priority-less",
46 2, 0, 0, (SCM a, SCM b),
47 "Compare two grobs by script priority. For internal use.")
49 Grob *i1 = unsmob<Grob> (a);
50 Grob *i2 = unsmob<Grob> (b);
52 SCM p1 = i1->get_property ("script-priority");
53 SCM p2 = i2->get_property ("script-priority");
55 return scm_to_int (p1) < scm_to_int (p2) ? SCM_BOOL_T : SCM_BOOL_F;
58 MAKE_SCHEME_CALLBACK (Script_column, row_before_line_breaking, 1);
60 Script_column::row_before_line_breaking (SCM smob)
62 Grob *me = unsmob<Grob> (smob);
63 vector<Grob *> horizontal_grobs;
64 extract_grob_set (me, "scripts", scripts);
66 Grob_scripts_map head_scripts_map;
67 vector<Grob *> affect_all_grobs;
68 for (vsize i = 0; i < scripts.size (); i++)
70 Grob *sc = scripts[i];
73 Don't want to consider scripts horizontally next to notes.
75 if (has_interface<Accidental_placement> (sc)
76 || has_interface<Arpeggio> (sc))
78 affect_all_grobs.push_back (sc);
80 else if (sc->get_property_data ("Y-offset")
81 != Side_position_interface::y_aligned_side_proc)
83 head_scripts_map[sc->get_parent (Y_AXIS)].push_back (sc);
87 for (Grob_scripts_map::const_iterator i (head_scripts_map.begin ());
88 i != head_scripts_map.end ();
91 vector<Grob *> grobs = (*i).second;
93 // this isn't right in all cases, but in general a safe assumption.
94 concat (grobs, affect_all_grobs);
98 return SCM_UNSPECIFIED;
101 MAKE_SCHEME_CALLBACK (Script_column, before_line_breaking, 1);
103 Script_column::before_line_breaking (SCM smob)
105 Grob *me = unsmob<Grob> (smob);
106 vector<Grob *> staff_sided;
108 extract_grob_set (me, "scripts", scripts);
109 for (vsize i = 0; i < scripts.size (); i++)
111 Grob *sc = scripts[i];
113 Don't want to consider scripts horizontally next to notes.
115 if (sc->get_property_data ("X-offset")
116 != Side_position_interface::x_aligned_side_proc)
117 staff_sided.push_back (sc);
120 order_grobs (staff_sided);
121 return SCM_UNSPECIFIED;
125 Script_column::order_grobs (vector<Grob *> grobs)
127 Drul_array<SCM> scripts_drul (SCM_EOL, SCM_EOL);
128 for (vsize i = 0; i < grobs.size (); i++)
131 Direction d = get_grob_direction (g);
133 scripts_drul[d] = scm_cons (g->self_scm (), scripts_drul[d]);
136 for (DOWN_and_UP (d))
138 SCM ss = scm_reverse_x (scripts_drul[d], SCM_EOL);
139 ss = scm_stable_sort_x (ss, ly_grob_script_priority_less_proc);
141 Grob *g = 0; // current grob in list
142 Grob *last = 0; // previous grob in list
143 SCM initial_outside_staff = SCM_EOL; // initial outside_staff_priority of current grob
144 SCM last_initial_outside_staff = SCM_EOL; // initial outside_staff_priority of previous grob
146 // loop over all grobs in script column (already sorted by script_priority)
147 for (SCM s = ss; scm_is_pair (s);
148 s = scm_cdr (s), last = g, last_initial_outside_staff = initial_outside_staff)
150 g = unsmob<Grob> (scm_car (s));
151 initial_outside_staff = g->get_property ("outside-staff-priority");
152 if (last) //not the first grob in the list
154 SCM last_outside_staff = last->get_property ("outside-staff-priority");
156 if outside_staff_priority is missing for previous grob,
157 use all the scripts so far as support for the current grob
159 if (!scm_is_number (last_outside_staff))
160 for (SCM t = ss; !scm_is_eq (t, s); t = scm_cdr (t))
161 Side_position_interface::add_support (g, unsmob<Grob> (scm_car (t)));
163 if outside_staff_priority is missing or is equal to original
164 outside_staff_priority of previous grob, set new
165 outside_staff_priority to just higher than outside_staff_priority
166 of previous grob in order to preserve ordering.
168 else if ((!scm_is_number (initial_outside_staff))
169 || (fabs (scm_to_double (initial_outside_staff)
170 - robust_scm2double (last_initial_outside_staff, 0)) < 0.001))
171 g->set_property ("outside-staff-priority",
172 scm_from_double (scm_to_double (last_outside_staff) + 0.1));
178 ADD_INTERFACE (Script_column,
179 "An interface that sorts scripts according to their"
180 " @code{script-priority} and @code{outside-staff-priority}.",