2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1996--2012 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 "time-signature.hh"
23 #include "font-interface.hh"
24 #include "international.hh"
25 #include "output-def.hh"
26 #include "staff-symbol.hh"
27 #include "staff-symbol-referencer.hh"
28 #include "text-interface.hh"
34 this file should go ; The formatting can completely be done with
38 MAKE_SCHEME_CALLBACK (Time_signature, print, 1);
40 Time_signature::print (SCM smob)
42 Grob *me = unsmob_grob (smob);
43 SCM st = me->get_property ("style");
44 SCM frac = me->get_property ("fraction");
47 if (scm_is_pair (frac))
49 n = scm_to_int (scm_car (frac));
50 d = scm_to_int (scm_cdr (frac));
54 if (st == ly_symbol2scm ("single-digit"))
55 m = numbered_time_signature (me, n, 0);
56 else if (scm_is_symbol (st))
57 m = special_time_signature (me, st, n, d);
59 m = numbered_time_signature (me, n, d);
62 position the signature centred on the staff line
63 nearest to the middle of the staff
65 if (Grob *staff = Staff_symbol_referencer::get_staff_symbol (me))
67 std::vector<Real> const linepos = Staff_symbol::line_positions (staff);
68 if (!linepos.empty ())
70 Interval const span = Staff_symbol::line_span (staff);
71 Real const mid = span.center ();
72 Real pos = linepos.front ();
73 Real dist = fabs (pos - mid);
74 for (std::vector<Real>::const_iterator
75 i = linepos.begin (), e = linepos.end ();
78 double const d = fabs (*i - mid);
87 (pos * Staff_symbol_referencer::staff_space (me) / 2, Y_AXIS);
91 return m.smobbed_copy ();
95 Time_signature::special_time_signature (Grob *me, SCM scm_style, int n, int d)
97 string style = robust_symbol2string (scm_style, "default");
99 if (style == "numbered")
100 return numbered_time_signature (me, n, d);
102 if ((style == "default") || (style == ""))
103 style = to_string ("C");
107 if /* neither C2/2 nor C4/4 */
108 (((n != 2) || (d != 2))
109 && ((n != 4) || (d != 4)))
110 return numbered_time_signature (me, n, d);
113 string char_name = style + to_string (n) + to_string (d);
114 me->set_property ("font-encoding", ly_symbol2scm ("fetaMusic"));
115 Stencil out = Font_interface::get_default_font (me)
116 ->find_by_name ("timesig." + char_name);
117 if (!out.is_empty ())
120 /* If there is no such symbol, we default to the numbered style.
121 (Here really with a warning!) */
122 me->warning (_f ("time signature symbol `%s' not found; "
123 "reverting to numbered style", char_name));
124 return numbered_time_signature (me, n, d);
128 Time_signature::numbered_time_signature (Grob *me, int num, int den)
130 SCM chain = me->get_property_alist_chain (Font_interface::text_font_alist_chain (me));
131 chain = scm_cons (scm_list_1 (scm_cons (ly_symbol2scm ("font-encoding"),
132 ly_symbol2scm ("fetaText"))),
135 SCM sn = Text_interface::interpret_markup (me->layout ()->self_scm (), chain,
136 ly_string2scm (to_string (num)));
137 SCM sd = Text_interface::interpret_markup (me->layout ()->self_scm (), chain,
138 ly_string2scm (to_string (den)));
140 Stencil n = *unsmob_stencil (sn);
141 Stencil d = *unsmob_stencil (sd);
143 n.align_to (X_AXIS, CENTER);
144 d.align_to (X_AXIS, CENTER);
148 m.add_at_edge (Y_AXIS, UP, n, 0.0);
149 m.add_at_edge (Y_AXIS, DOWN, d, 0.0);
154 m.align_to (Y_AXIS, CENTER);
157 m.align_to (X_AXIS, LEFT);
162 ADD_INTERFACE (Time_signature,
163 "A time signature, in different styles. The following values"
164 " for @code{style} are are recognized:\n"
168 "4/4 and 2/2 are typeset as C and struck C, respectively."
169 " All other time signatures are written with two digits."
170 " The value @code{default} is equivalent to @code{C}.\n"
171 "@item neomensural\n"
172 "2/2, 3/2, 2/4, 3/4, 4/4, 6/4, 9/4, 4/8, 6/8, and 9/8 are"
173 " typeset with neo-mensural style mensuration marks. All"
174 " other time signatures are written with two digits.\n"
176 "2/2, 3/2, 2/4, 3/4, 4/4, 6/4, 9/4, 4/8, 6/8, and 9/8 are"
177 " typeset with mensural style mensuration marks. All other"
178 " time signatures are written with two digits.\n"
179 "@item single-digit\n"
180 "All time signatures are typeset with a single digit, e.g.,"
181 " 3/2 is written as 3.\n"
183 "All time signatures are typeset with two digits.\n"