2 time-signature.cc -- implement Time_signature
4 source file of the GNU LilyPond music typesetter
6 (c) 1996--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "time-signature.hh"
11 #include "text-interface.hh"
12 #include "output-def.hh"
13 #include "font-interface.hh"
15 #include "staff-symbol-referencer.hh"
20 this file should go ; The formatting can completely be done with
24 MAKE_SCHEME_CALLBACK (Time_signature, print, 1);
26 Time_signature::print (SCM smob)
28 Grob *me = unsmob_grob (smob);
29 SCM st = me->get_property ("style");
30 SCM frac = me->get_property ("fraction");
33 if (scm_is_pair (frac))
35 n = scm_to_int (scm_car (frac));
36 d = scm_to_int (scm_cdr (frac));
40 if (st == ly_symbol2scm ("single-digit"))
41 m = numbered_time_signature (me, n, 0);
42 else if (scm_is_symbol (st))
43 m = special_time_signature (me, st, n, d);
45 m = numbered_time_signature (me, n, d);
47 if (Staff_symbol_referencer::line_count (me) % 2 == 0)
48 m.translate_axis (Staff_symbol_referencer::staff_space (me) / 2, Y_AXIS);
50 return m.smobbed_copy ();
54 Time_signature::special_time_signature (Grob *me, SCM scm_style, int n, int d)
56 String style = ly_scm2string (scm_symbol_to_string (scm_style));
58 if (style == "numbered")
59 return numbered_time_signature (me, n, d);
61 if ((style == "default") || (style == ""))
62 style = to_string ("C");
66 if /* neither C2/2 nor C4/4 */
67 (((n != 2) || (d != 2))
68 && ((n != 4) || (d != 4)))
69 return numbered_time_signature (me, n, d);
72 String char_name = style + to_string (n) + to_string (d);
73 me->set_property ("font-encoding", ly_symbol2scm ("fetaMusic"));
74 Stencil out = Font_interface::get_default_font (me)
75 ->find_by_name ("timesig." + char_name);
79 /* If there is no such symbol, we default to the numbered style.
80 (Here really with a warning!) */
81 me->warning (_f ("time signature symbol `%s' not found; "
82 "reverting to numbered style", char_name));
83 return numbered_time_signature (me, n, d);
87 Time_signature::numbered_time_signature (Grob *me, int num, int den)
89 SCM chain = me->get_property_alist_chain (Font_interface::text_font_alist_chain (me));
90 chain = scm_cons (scm_list_1 (scm_cons (ly_symbol2scm ("font-encoding"),
91 ly_symbol2scm ("fetaNumber"))),
94 SCM sn = Text_interface::interpret_markup (me->layout ()->self_scm (), chain,
95 scm_makfrom0str (to_string (num).to_str0 ()));
96 SCM sd = Text_interface::interpret_markup (me->layout ()->self_scm (), chain,
97 scm_makfrom0str (to_string (den).to_str0 ()));
99 Stencil n = *unsmob_stencil (sn);
100 Stencil d = *unsmob_stencil (sd);
102 n.align_to (X_AXIS, CENTER);
103 d.align_to (X_AXIS, CENTER);
107 m.add_at_edge (Y_AXIS, UP, n, 0.0, 0);
108 m.add_at_edge (Y_AXIS, DOWN, d, 0.0, 0);
113 m.align_to (Y_AXIS, CENTER);
116 m.align_to (X_AXIS, LEFT);
121 ADD_INTERFACE (Time_signature, "time-signature-interface",
122 "A time signature, in different styles.\n"
123 " The following values for 'style are are recognized:\n"
127 " 4/4 and 2/2 are typeset as C and struck C, respectively. All\n"
128 " other time signatures are written with two digits.\n"
130 " @item @code{neomensural}\n"
131 " 2/2, 3/2, 2/4, 3/4, 4/4, 6/4, 9/4, 4/8, 6/8 and 9/8 are\n"
132 " typeset with neo-mensural style mensuration marks. All other time\n"
133 " signatures are written with two digits.\n"
135 " @item @code{mensural}\n"
136 " 2/2, 3/2, 2/4, 3/4, 4/4, 6/4, 9/4, 4/8, 6/8 and 9/8 are\n"
137 " typeset with mensural style mensuration marks. All other time\n"
138 " signatures are written with two digits.\n"
140 " @item @code{single-digit}\n"
141 " All time signatures are typeset with a single\n"
142 " digit, e.g. 3/2 is written as 3.\n"
145 "See also the test-file @file{input/test/time.ly}.\n",