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);
35 /* This callback exists for the sole purpose of allowing us to override
36 its pure equivalent to accidental-interface::pure-height */
37 MAKE_SCHEME_CALLBACK (Accidental_interface, height, 1);
39 Accidental_interface::height (SCM smob)
41 return Grob::stencil_height (smob);
44 /* If this gets called before line breaking, we will return a non-trivial
45 width even if we belong to a tie and won't actually get printed. */
46 MAKE_SCHEME_CALLBACK (Accidental_interface, width, 1);
48 Accidental_interface::width (SCM smob)
50 Grob *me = unsmob_grob (smob);
51 Stencil *s = unsmob_stencil (get_stencil (me));
54 return ly_interval2scm (s->extent (X_AXIS));
55 return ly_interval2scm (Interval ());
58 MAKE_SCHEME_CALLBACK (Accidental_interface, pure_height, 3);
60 Accidental_interface::pure_height (SCM smob, SCM start_scm, SCM)
62 Item *me = dynamic_cast<Item*> (unsmob_grob (smob));
63 int start = scm_to_int (start_scm);
64 int rank = me->get_column ()->get_rank ();
66 bool visible = to_boolean (me->get_property ("forced"))
67 || !unsmob_grob (me->get_object ("tie"))
68 || rank != start + 1; /* we are in the middle of a line */
70 return visible ? Grob::stencil_height (smob) : ly_interval2scm (Interval ());
74 Accidental_interface::accurate_boxes (Grob *me, Grob **common)
77 b[X_AXIS] = me->extent (me, X_AXIS);
78 b[Y_AXIS] = me->extent (me, Y_AXIS);
82 bool parens = to_boolean (me->get_property ("parenthesized"));
86 if (!to_boolean (me->get_property ("restore-first"))
89 SCM alist = me->get_property ("glyph-name-alist");
90 SCM alt = me->get_property ("alteration");
91 string glyph_name = robust_scm2string (ly_assoc_get (alt, alist, SCM_BOOL_F),
94 if (glyph_name == "accidentals.flat"
95 || glyph_name == "accidentals.mirroredflat")
101 we could make the stem thinner, but that places the flats
105 glyph_name=="accidentals.mirroredflat" ? LEFT : RIGHT;
106 stem[X_AXIS][bulb_dir] = stem[X_AXIS].center ();
109 To prevent vertical alignment for 6ths
112 bulb[Y_AXIS][UP] *= .35;
114 boxes.push_back (bulb);
115 boxes.push_back (stem);
117 else if (glyph_name == "accidentals.natural")
123 lstem[Y_AXIS] *= 1.1;
124 rstem[Y_AXIS] *= 1.1;
126 belly[Y_AXIS] *= 0.75;
127 lstem[X_AXIS][RIGHT] *= .33;
128 rstem[X_AXIS][LEFT] = rstem[X_AXIS].linear_combination (1.0 / 3.0);
129 lstem[Y_AXIS][DOWN] = belly[Y_AXIS][DOWN];
130 rstem[Y_AXIS][UP] = belly[Y_AXIS][UP];
131 boxes.push_back (belly);
132 boxes.push_back (lstem);
133 boxes.push_back (rstem);
136 TODO: add support for, double flat.
143 Offset o (me->relative_coordinate (common[X_AXIS], X_AXIS),
144 me->relative_coordinate (common[Y_AXIS], Y_AXIS));
146 for (vsize i = boxes.size (); i--;)
147 boxes[i].translate (o);
152 MAKE_SCHEME_CALLBACK (Accidental_interface, print, 1);
154 Accidental_interface::print (SCM smob)
156 Grob *me = unsmob_grob (smob);
157 Grob *tie = unsmob_grob (me->get_object ("tie"));
159 if (tie && !tie->original ()
160 && !to_boolean (me->get_property ("forced")))
166 return get_stencil (me);
170 Accidental_interface::get_stencil (Grob *me)
172 Font_metric *fm = Font_interface::get_default_font (me);
174 SCM alist = me->get_property ("glyph-name-alist");
175 SCM alt = me->get_property ("alteration");
176 SCM glyph_name = ly_assoc_get (alt, alist, SCM_BOOL_F);
178 if (!scm_is_string (glyph_name))
180 me->warning (_f ("Could not find glyph-name for alteration %s",
181 ly_scm_write_string (alt).c_str ()));
185 Stencil mol (fm->find_by_name (scm_i_string_chars (glyph_name)));
186 if (to_boolean (me->get_property ("restore-first")))
189 this isn't correct for ancient accidentals, but they don't
190 use double flats/sharps anyway.
192 Stencil acc (fm->find_by_name ("accidentals.natural"));
195 me->warning (_ ("natural alteration glyph not found"));
197 mol.add_at_edge (X_AXIS, LEFT, acc, 0.1);
200 if (to_boolean (me->get_property ("parenthesized")))
201 mol = parenthesize (me, mol);
203 return mol.smobbed_copy ();
207 ADD_INTERFACE (Accidental_interface,
208 "a single accidental",