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 Hmm. Need separate callback, or perhaps #'live bool property.
37 MAKE_SCHEME_CALLBACK (Accidental_interface, after_line_breaking, 1);
39 Accidental_interface::after_line_breaking (SCM smob)
41 Grob *me = unsmob_grob (smob);
42 Grob *tie = unsmob_grob (me->get_object ("tie"));
44 if (tie && !tie->original ()
45 && !to_boolean (me->get_property ("forced")))
50 return SCM_UNSPECIFIED;
53 /* This callback exists for the sole purpose of allowing us to override
54 its pure equivalent to accidental-interface::pure-height */
55 MAKE_SCHEME_CALLBACK (Accidental_interface, height, 1);
57 Accidental_interface::height (SCM smob)
59 return Grob::stencil_height (smob);
62 MAKE_SCHEME_CALLBACK (Accidental_interface, pure_height, 3);
64 Accidental_interface::pure_height (SCM smob, SCM start_scm, SCM)
66 Item *me = dynamic_cast<Item*> (unsmob_grob (smob));
67 int start = scm_to_int (start_scm);
68 int rank = me->get_column ()->get_rank ();
70 bool visible = to_boolean (me->get_property ("forced"))
71 || !unsmob_grob (me->get_object ("tie"))
72 || rank != start + 1; /* we are in the middle of a line */
74 return visible ? Grob::stencil_height (smob) : ly_interval2scm (Interval ());
78 Accidental_interface::accurate_boxes (Grob *me, Grob **common)
81 b[X_AXIS] = me->extent (me, X_AXIS);
82 b[Y_AXIS] = me->extent (me, Y_AXIS);
86 bool parens = to_boolean (me->get_property ("parenthesized"));
90 if (!to_boolean (me->get_property ("restore-first"))
93 SCM alist = me->get_property ("glyph-name-alist");
94 SCM alt = me->get_property ("alteration");
95 string glyph_name = robust_scm2string (ly_assoc_get (alt, alist, SCM_BOOL_F),
98 if (glyph_name == "accidentals.flat"
99 || glyph_name == "accidentals.mirroredflat")
105 we could make the stem thinner, but that places the flats
109 glyph_name=="accidentals.mirroredflat" ? LEFT : RIGHT;
110 stem[X_AXIS][bulb_dir] = stem[X_AXIS].center ();
113 To prevent vertical alignment for 6ths
116 bulb[Y_AXIS][UP] *= .35;
118 boxes.push_back (bulb);
119 boxes.push_back (stem);
121 else if (glyph_name == "accidentals.natural")
127 lstem[Y_AXIS] *= 1.1;
128 rstem[Y_AXIS] *= 1.1;
130 belly[Y_AXIS] *= 0.75;
131 lstem[X_AXIS][RIGHT] *= .33;
132 rstem[X_AXIS][LEFT] = rstem[X_AXIS].linear_combination (1.0 / 3.0);
133 lstem[Y_AXIS][DOWN] = belly[Y_AXIS][DOWN];
134 rstem[Y_AXIS][UP] = belly[Y_AXIS][UP];
135 boxes.push_back (belly);
136 boxes.push_back (lstem);
137 boxes.push_back (rstem);
140 TODO: add support for, double flat.
147 Offset o (me->relative_coordinate (common[X_AXIS], X_AXIS),
148 me->relative_coordinate (common[Y_AXIS], Y_AXIS));
150 for (vsize i = boxes.size (); i--;)
151 boxes[i].translate (o);
156 MAKE_SCHEME_CALLBACK (Accidental_interface, print, 1);
158 Accidental_interface::print (SCM smob)
160 Grob *me = unsmob_grob (smob);
162 Font_metric *fm = Font_interface::get_default_font (me);
164 SCM alist = me->get_property ("glyph-name-alist");
165 SCM alt = me->get_property ("alteration");
166 SCM glyph_name = ly_assoc_get (alt, alist, SCM_BOOL_F);
168 if (!scm_is_string (glyph_name))
170 me->warning (_f ("Could not find glyph-name for alteration %s",
171 ly_scm_write_string (alt).c_str ()));
175 Stencil mol (fm->find_by_name (scm_i_string_chars (glyph_name)));
176 if (to_boolean (me->get_property ("restore-first")))
179 this isn't correct for ancient accidentals, but they don't
180 use double flats/sharps anyway.
182 Stencil acc (fm->find_by_name ("accidentals.natural"));
185 me->warning (_ ("natural alteration glyph not found"));
187 mol.add_at_edge (X_AXIS, LEFT, acc, 0.1);
190 if (to_boolean (me->get_property ("parenthesized")))
191 mol = parenthesize (me, mol);
193 return mol.smobbed_copy ();
197 ADD_INTERFACE (Accidental_interface,
198 "a single accidental",