2 breathing_sign.cc -- implement Breathing_sign
4 (c) 1999--2003 Michael Krause
6 written for the GNU LilyPond music typesetter
8 TODO: --> see breathing-sign-engraver.cc
10 Extensions for ancient notation (c) 2003 by Juergen Reuter
13 #include "staff-symbol-referencer.hh"
14 #include "directional-element-interface.hh"
15 #include "breathing-sign.hh"
17 #include "molecule.hh"
18 #include "paper-def.hh"
21 #include "dimensions.hh"
22 #include "direction.hh"
23 #include "text-item.hh"
24 #include "font-interface.hh"
27 TODO: thickness should be a grob property (unit: stafflinethickness)
28 rather than hardwired to (staff_space / 6).
34 UGH : this is full of C&P code. Consolidate! --hwn
38 Gregorian chant divisio minima. (Actually, this was the original
39 breathing sign by Michael. -- jr)
41 MAKE_SCHEME_CALLBACK (Breathing_sign,divisio_minima,1);
43 Breathing_sign::divisio_minima (SCM smob)
45 Grob *me = unsmob_grob (smob);
46 Real staff_space = Staff_symbol_referencer::staff_space (me);
48 Real thickness = me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness"));
49 SCM lt = me->get_grob_property ("thickness");
51 thickness *= gh_scm2double (lt);
52 if (Staff_symbol_referencer::get_staff_symbol (me))
54 staff_size = (Staff_symbol_referencer::line_count (me) - 1) * staff_space;
59 Real blotdiameter = me->get_paper ()->get_realvar (ly_symbol2scm ("blotdiameter"));
62 * Draw a small vertical line through the uppermost (or, depending
63 * on direction, lowermost) staff line.
65 Interval xdim (0, thickness);
66 Interval ydim (-0.5 * staff_space, +0.5 * staff_space);
68 Molecule out = Lookup::round_filled_box (b, blotdiameter);
69 return out.smobbed_copy ();
73 Gregorian chant divisio maior.
75 MAKE_SCHEME_CALLBACK (Breathing_sign,divisio_maior,1);
77 Breathing_sign::divisio_maior (SCM smob)
79 Grob *me = unsmob_grob (smob);
80 Real staff_space = Staff_symbol_referencer::staff_space (me);
82 Real thickness = me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness"));
83 SCM lt = me->get_grob_property ("thickness");
85 thickness *= gh_scm2double (lt);
86 if (Staff_symbol_referencer::get_staff_symbol (me))
88 staff_size = (Staff_symbol_referencer::line_count (me) - 1) * staff_space;
93 Real blotdiameter = me->get_paper ()->get_realvar (ly_symbol2scm ("blotdiameter"));
96 * Draw a vertical line that is vertically centered in the staff
97 * (just like a bar). The height of this line should be a little
98 * more than half the size of the staff, such that the endings of
99 * the line are in the middle of a staff space.
101 int lines = Staff_symbol_referencer::line_count (me);
102 int height = lines / 2; // little more than half of staff size
103 if ((lines & 1) != (height & 1))
104 height++; // ensure endings are centered in staff space
106 Interval xdim (0, thickness);
107 Interval ydim (-0.5 * height, +0.5 * height);
109 Molecule out = Lookup::round_filled_box (b, blotdiameter);
110 return out.smobbed_copy ();
114 Gregorian chant divisio maxima.
116 MAKE_SCHEME_CALLBACK (Breathing_sign,divisio_maxima,1);
118 Breathing_sign::divisio_maxima (SCM smob)
120 Grob *me = unsmob_grob (smob);
121 Real staff_space = Staff_symbol_referencer::staff_space (me);
123 Real thickness = me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness"));
124 SCM lt = me->get_grob_property ("thickness");
125 if (gh_number_p (lt))
126 thickness *= gh_scm2double (lt);
127 if (Staff_symbol_referencer::get_staff_symbol (me))
129 staff_size = (Staff_symbol_referencer::line_count (me) - 1) * staff_space;
134 Real blotdiameter = me->get_paper ()->get_realvar (ly_symbol2scm ("blotdiameter"));
136 // like a "|" type bar
137 Interval xdim (0, thickness);
138 Interval ydim (-0.5 * staff_size, +0.5 * staff_size);
140 Molecule out = Lookup::round_filled_box (b, blotdiameter);
141 return out.smobbed_copy ();
145 Gregorian chant finalis.
147 MAKE_SCHEME_CALLBACK (Breathing_sign,finalis,1);
149 Breathing_sign::finalis (SCM smob)
151 Grob *me = unsmob_grob (smob);
152 Real staff_space = Staff_symbol_referencer::staff_space (me);
154 Real thickness = me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness"));
155 SCM lt = me->get_grob_property ("thickness");
156 if (gh_number_p (lt))
157 thickness *= gh_scm2double (lt);
158 if (Staff_symbol_referencer::get_staff_symbol (me))
160 staff_size = (Staff_symbol_referencer::line_count (me) - 1) * staff_space;
165 Real blotdiameter = me->get_paper ()->get_realvar (ly_symbol2scm ("blotdiameter"));
167 // like a "||" type bar
168 Interval xdim (0, thickness);
169 Interval ydim (-0.5 * staff_size, +0.5 * staff_size);
171 Molecule line1 = Lookup::round_filled_box (b, blotdiameter);
172 Molecule line2 (line1);
173 line2.translate_axis (0.5 * staff_space, X_AXIS);
174 line1.add_molecule (line2);
176 return line1.smobbed_copy ();
179 MAKE_SCHEME_CALLBACK (Breathing_sign,offset_callback,2);
181 Breathing_sign::offset_callback (SCM element_smob, SCM)
183 Grob *me = unsmob_grob (element_smob);
185 Direction d = get_grob_direction (me);
189 set_grob_direction (me, d);
192 Real inter_f = Staff_symbol_referencer::staff_space (me)/2;
193 int sz = Staff_symbol_referencer::line_count (me)-1;
194 return gh_double2scm (inter_f * sz * d);
197 ADD_INTERFACE(Breathing_sign, "breathing-sign-interface",