2 time-signature.cc -- implement Time_signature
4 source file of the GNU LilyPond music typesetter
6 (c) 1996--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "time-signature.hh"
12 #include "font-interface.hh"
13 #include "international.hh"
14 #include "output-def.hh"
15 #include "staff-symbol-referencer.hh"
16 #include "text-interface.hh"
22 this file should go ; The formatting can completely be done with
26 MAKE_SCHEME_CALLBACK (Time_signature
, print
, 1);
28 Time_signature::print (SCM smob
)
30 Grob
*me
= unsmob_grob (smob
);
31 SCM st
= me
->get_property ("style");
32 SCM frac
= me
->get_property ("fraction");
35 if (scm_is_pair (frac
))
37 n
= scm_to_int (scm_car (frac
));
38 d
= scm_to_int (scm_cdr (frac
));
42 if (st
== ly_symbol2scm ("single-digit"))
43 m
= numbered_time_signature (me
, n
, 0);
44 else if (scm_is_symbol (st
))
45 m
= special_time_signature (me
, st
, n
, d
);
47 m
= numbered_time_signature (me
, n
, d
);
49 if (Staff_symbol_referencer::line_count (me
) % 2 == 0)
50 m
.translate_axis (Staff_symbol_referencer::staff_space (me
) / 2, Y_AXIS
);
52 return m
.smobbed_copy ();
56 Time_signature::special_time_signature (Grob
*me
, SCM scm_style
, int n
, int d
)
58 string style
= ly_scm2string (scm_symbol_to_string (scm_style
));
60 if (style
== "numbered")
61 return numbered_time_signature (me
, n
, d
);
63 if ((style
== "default") || (style
== ""))
64 style
= to_string ("C");
68 if /* neither C2/2 nor C4/4 */
69 (((n
!= 2) || (d
!= 2))
70 && ((n
!= 4) || (d
!= 4)))
71 return numbered_time_signature (me
, n
, d
);
74 string char_name
= style
+ to_string (n
) + to_string (d
);
75 me
->set_property ("font-encoding", ly_symbol2scm ("fetaMusic"));
76 Stencil out
= Font_interface::get_default_font (me
)
77 ->find_by_name ("timesig." + char_name
);
81 /* If there is no such symbol, we default to the numbered style.
82 (Here really with a warning!) */
83 me
->warning (_f ("time signature symbol `%s' not found; "
84 "reverting to numbered style", char_name
));
85 return numbered_time_signature (me
, n
, d
);
89 Time_signature::numbered_time_signature (Grob
*me
, int num
, int den
)
91 SCM chain
= me
->get_property_alist_chain (Font_interface::text_font_alist_chain (me
));
92 chain
= scm_cons (scm_list_1 (scm_cons (ly_symbol2scm ("font-encoding"),
93 ly_symbol2scm ("fetaNumber"))),
96 SCM sn
= Text_interface::interpret_markup (me
->layout ()->self_scm (), chain
,
97 ly_string2scm (to_string (num
)));
98 SCM sd
= Text_interface::interpret_markup (me
->layout ()->self_scm (), chain
,
99 ly_string2scm (to_string (den
)));
101 Stencil n
= *unsmob_stencil (sn
);
102 Stencil d
= *unsmob_stencil (sd
);
104 n
.align_to (X_AXIS
, CENTER
);
105 d
.align_to (X_AXIS
, CENTER
);
109 m
.add_at_edge (Y_AXIS
, UP
, n
, 0.0);
110 m
.add_at_edge (Y_AXIS
, DOWN
, d
, 0.0);
115 m
.align_to (Y_AXIS
, CENTER
);
118 m
.align_to (X_AXIS
, LEFT
);
123 ADD_INTERFACE (Time_signature
,
124 "A time signature, in different styles.\n"
125 " The following values for 'style are are recognized:\n"
129 " 4/4 and 2/2 are typeset as C and struck C, respectively. All\n"
130 " other time signatures are written with two digits.\n"
132 " @item @code{neomensural}\n"
133 " 2/2, 3/2, 2/4, 3/4, 4/4, 6/4, 9/4, 4/8, 6/8 and 9/8 are\n"
134 " typeset with neo-mensural style mensuration marks. All other time\n"
135 " signatures are written with two digits.\n"
137 " @item @code{mensural}\n"
138 " 2/2, 3/2, 2/4, 3/4, 4/4, 6/4, 9/4, 4/8, 6/8 and 9/8 are\n"
139 " typeset with mensural style mensuration marks. All other time\n"
140 " signatures are written with two digits.\n"
142 " @item @code{single-digit}\n"
143 " All time signatures are typeset with a single\n"
144 " digit, e.g. 3/2 is written as 3.\n"
147 "See also the test-file @file{input/test/time.ly}.\n",