2 breathing_sign.cc -- implement Breathing_sign
4 (c) 1999--2009 Michael Krause
6 written for the GNU LilyPond music typesetter
8 TODO: --> see breathing-sign-engraver.cc
10 Extensions for ancient notation (c) 2003--2009 by Juergen Reuter
13 #include "breathing-sign.hh"
15 #include "staff-symbol-referencer.hh"
16 #include "directional-element-interface.hh"
17 #include "output-def.hh"
19 #include "dimensions.hh"
20 #include "direction.hh"
21 #include "text-interface.hh"
22 #include "font-interface.hh"
26 TODO: thickness should be a grob property (unit: linethickness)
27 rather than hardwired to (staff_space / 6).
31 UGH : this is full of C&P code. Consolidate! --hwn
35 Gregorian chant divisio minima. (Actually, this was the original
36 breathing sign by Michael. -- jr)
38 MAKE_SCHEME_CALLBACK (Breathing_sign
, divisio_minima
, 1);
40 Breathing_sign::divisio_minima (SCM smob
)
42 Grob
*me
= unsmob_grob (smob
);
43 Real staff_space
= Staff_symbol_referencer::staff_space (me
);
45 Real thickness
= Staff_symbol_referencer::line_thickness (me
);
46 thickness
*= robust_scm2double (me
->get_property ("thickness"), 1.0);
48 Real blotdiameter
= me
->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
51 * Draw a small vertical line through the uppermost (or, depending
52 * on direction, lowermost) staff line.
54 Interval
xdim (0, thickness
);
55 Interval
ydim (-0.5 * staff_space
, +0.5 * staff_space
);
57 Stencil out
= Lookup::round_filled_box (b
, blotdiameter
);
58 return out
.smobbed_copy ();
62 Gregorian chant divisio maior.
64 MAKE_SCHEME_CALLBACK (Breathing_sign
, divisio_maior
, 1);
66 Breathing_sign::divisio_maior (SCM smob
)
68 Grob
*me
= unsmob_grob (smob
);
69 Real staff_space
= Staff_symbol_referencer::staff_space (me
);
71 Real thickness
= Staff_symbol_referencer::line_thickness (me
);
72 thickness
*= robust_scm2double (me
->get_property ("thickness"), 1.0);
74 if (Staff_symbol_referencer::get_staff_symbol (me
))
75 staff_size
= (Staff_symbol_referencer::line_count (me
) - 1) * staff_space
;
79 Real blotdiameter
= me
->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
82 * Draw a vertical line that is vertically centered in the staff
83 * (just like a bar). The height of this line should be a little
84 * more than half the size of the staff, such that the endings of
85 * the line are in the middle of a staff space.
87 int lines
= Staff_symbol_referencer::line_count (me
);
88 int height
= lines
/ 2; // little more than half of staff size
89 if ((lines
& 1) != (height
& 1))
90 height
++; // ensure endings are centered in staff space
92 Interval
xdim (0, thickness
);
93 Interval
ydim (-0.5 * height
, +0.5 * height
);
95 Stencil out
= Lookup::round_filled_box (b
, blotdiameter
);
96 return out
.smobbed_copy ();
100 Gregorian chant divisio maxima.
102 MAKE_SCHEME_CALLBACK (Breathing_sign
, divisio_maxima
, 1);
104 Breathing_sign::divisio_maxima (SCM smob
)
106 Grob
*me
= unsmob_grob (smob
);
107 Real staff_space
= Staff_symbol_referencer::staff_space (me
);
109 Real thickness
= Staff_symbol_referencer::line_thickness (me
);
110 thickness
*= robust_scm2double (me
->get_property ("thickness"), 1.0);
112 if (Staff_symbol_referencer::get_staff_symbol (me
))
113 staff_size
= (Staff_symbol_referencer::line_count (me
) - 1) * staff_space
;
117 Real blotdiameter
= me
->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
119 // like a "|" type bar
120 Interval
xdim (0, thickness
);
121 Interval
ydim (-0.5 * staff_size
, +0.5 * staff_size
);
123 Stencil out
= Lookup::round_filled_box (b
, blotdiameter
);
124 return out
.smobbed_copy ();
128 Gregorian chant finalis.
130 MAKE_SCHEME_CALLBACK (Breathing_sign
, finalis
, 1);
132 Breathing_sign::finalis (SCM smob
)
134 Grob
*me
= unsmob_grob (smob
);
135 Real staff_space
= Staff_symbol_referencer::staff_space (me
);
137 Real thickness
= Staff_symbol_referencer::line_thickness (me
);
138 thickness
*= robust_scm2double (me
->get_property ("thickness"), 1.0);
140 if (Staff_symbol_referencer::get_staff_symbol (me
))
141 staff_size
= (Staff_symbol_referencer::line_count (me
) - 1) * staff_space
;
145 Real blotdiameter
= me
->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
147 // like a "||" type bar
148 Interval
xdim (0, thickness
);
149 Interval
ydim (-0.5 * staff_size
, +0.5 * staff_size
);
151 Stencil line1
= Lookup::round_filled_box (b
, blotdiameter
);
152 Stencil
line2 (line1
);
153 line2
.translate_axis (0.5 * staff_space
, X_AXIS
);
154 line1
.add_stencil (line2
);
156 return line1
.smobbed_copy ();
159 MAKE_SCHEME_CALLBACK (Breathing_sign
, offset_callback
, 1);
161 Breathing_sign::offset_callback (SCM smob
)
163 Grob
*me
= unsmob_grob (smob
);
165 Direction d
= get_grob_direction (me
);
169 set_grob_direction (me
, d
);
172 Real inter
= Staff_symbol_referencer::staff_space (me
) / 2;
173 int sz
= Staff_symbol_referencer::line_count (me
) - 1;
174 return scm_from_double (inter
* sz
* d
);
177 ADD_INTERFACE (Breathing_sign
,