2 accidental.cc -- implement Accidental_interface
4 source file of the GNU LilyPond music typesetter
6 (c) 2001--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "accidental-interface.hh"
10 #include "font-interface.hh"
11 #include "international.hh"
13 #include "output-def.hh"
14 #include "paper-column.hh"
19 parenthesize (Grob *me, Stencil m)
22 = Font_interface::get_default_font (me);
24 = font->find_by_name ("accidentals.leftparen");
26 = font->find_by_name ("accidentals.rightparen");
28 m.add_at_edge (X_AXIS, LEFT, Stencil (open), 0);
29 m.add_at_edge (X_AXIS, RIGHT, Stencil (close), 0);
34 /* If this gets called before line breaking, we will return a non-trivial
35 extent even if we belong to a tie and won't actually get printed. */
37 get_extent (Grob *me, Axis a)
39 Stencil *s = unsmob_stencil (Accidental_interface::get_stencil (me));
42 return ly_interval2scm (s->extent (a));
43 return ly_interval2scm (Interval ());
46 MAKE_SCHEME_CALLBACK (Accidental_interface, height, 1);
48 Accidental_interface::height (SCM smob)
50 return get_extent (unsmob_grob (smob), Y_AXIS);
53 MAKE_SCHEME_CALLBACK (Accidental_interface, width, 1);
55 Accidental_interface::width (SCM smob)
57 return get_extent (unsmob_grob (smob), X_AXIS);
60 MAKE_SCHEME_CALLBACK (Accidental_interface, pure_height, 3);
62 Accidental_interface::pure_height (SCM smob, SCM start_scm, SCM)
64 Item *me = dynamic_cast<Item*> (unsmob_grob (smob));
65 int start = scm_to_int (start_scm);
66 int rank = me->get_column ()->get_rank ();
68 if (to_boolean (me->get_property ("forced"))
69 || !unsmob_grob (me->get_object ("tie"))
70 || rank == start + 1) /* we are at the start of a line */
72 Stencil *s = unsmob_stencil (get_stencil (me));
74 return ly_interval2scm (s->extent (Y_AXIS));
77 return ly_interval2scm (Interval ());
81 Accidental_interface::accurate_boxes (Grob *me, Grob **common)
84 b[X_AXIS] = me->extent (me, X_AXIS);
85 b[Y_AXIS] = me->extent (me, Y_AXIS);
89 bool parens = to_boolean (me->get_property ("parenthesized"));
93 if (!to_boolean (me->get_property ("restore-first"))
96 SCM alist = me->get_property ("glyph-name-alist");
97 SCM alt = me->get_property ("alteration");
98 string glyph_name = robust_scm2string (ly_assoc_get (alt, alist, SCM_BOOL_F),
101 if (glyph_name == "accidentals.flat"
102 || glyph_name == "accidentals.mirroredflat")
108 we could make the stem thinner, but that places the flats
112 glyph_name=="accidentals.mirroredflat" ? LEFT : RIGHT;
113 stem[X_AXIS][bulb_dir] = stem[X_AXIS].center ();
116 To prevent vertical alignment for 6ths
119 bulb[Y_AXIS][UP] *= .35;
121 boxes.push_back (bulb);
122 boxes.push_back (stem);
124 else if (glyph_name == "accidentals.natural")
130 lstem[Y_AXIS] *= 1.1;
131 rstem[Y_AXIS] *= 1.1;
133 belly[Y_AXIS] *= 0.75;
134 lstem[X_AXIS][RIGHT] *= .33;
135 rstem[X_AXIS][LEFT] = rstem[X_AXIS].linear_combination (1.0 / 3.0);
136 lstem[Y_AXIS][DOWN] = belly[Y_AXIS][DOWN];
137 rstem[Y_AXIS][UP] = belly[Y_AXIS][UP];
138 boxes.push_back (belly);
139 boxes.push_back (lstem);
140 boxes.push_back (rstem);
143 TODO: add support for, double flat.
150 Offset o (me->relative_coordinate (common[X_AXIS], X_AXIS),
151 me->relative_coordinate (common[Y_AXIS], Y_AXIS));
153 for (vsize i = boxes.size (); i--;)
154 boxes[i].translate (o);
159 MAKE_SCHEME_CALLBACK (Accidental_interface, print, 1);
161 Accidental_interface::print (SCM smob)
163 Grob *me = unsmob_grob (smob);
164 Grob *tie = unsmob_grob (me->get_object ("tie"));
166 if (tie && !tie->original ()
167 && !to_boolean (me->get_property ("forced")))
173 return get_stencil (me);
177 Accidental_interface::get_stencil (Grob *me)
179 Font_metric *fm = Font_interface::get_default_font (me);
181 SCM alist = me->get_property ("glyph-name-alist");
182 SCM alt = me->get_property ("alteration");
183 SCM glyph_name = ly_assoc_get (alt, alist, SCM_BOOL_F);
185 if (!scm_is_string (glyph_name))
187 me->warning (_f ("Could not find glyph-name for alteration %s",
188 ly_scm_write_string (alt).c_str ()));
192 Stencil mol (fm->find_by_name (ly_scm2string (glyph_name)));
193 if (to_boolean (me->get_property ("restore-first")))
196 this isn't correct for ancient accidentals, but they don't
197 use double flats/sharps anyway.
199 Stencil acc (fm->find_by_name ("accidentals.natural"));
202 me->warning (_ ("natural alteration glyph not found"));
204 mol.add_at_edge (X_AXIS, LEFT, acc, 0.1);
207 if (to_boolean (me->get_property ("parenthesized")))
208 mol = parenthesize (me, mol);
210 return mol.smobbed_copy ();
214 ADD_INTERFACE (Accidental_interface,
215 "A single accidental.",