2 notehead.cc -- implement Note_head
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
12 #include "note-head.hh"
14 #include "font-interface.hh"
15 #include "molecule.hh"
16 #include "musical-request.hh"
18 #include "staff-symbol-referencer.hh"
21 build a ledger line for small pieces.
24 Note_head::ledger_line (Interval xwid, Grob *me)
26 Drul_array<Molecule> endings;
27 endings[LEFT] = Font_interface::get_default_font (me)->find_by_name ("noteheads-ledgerending");
28 Molecule *e = &endings[LEFT];
31 Real thick = e->extent (Y_AXIS).length ();
32 Real len = e->extent (X_AXIS).length () - thick;
37 endings[d].translate_axis (xwid[d] - endings[d].extent (X_AXIS)[d], X_AXIS);
38 total.add_molecule (endings[d]);
39 } while ((flip (&d)) != LEFT);
41 Real xpos = xwid [LEFT] + len;
43 while (xpos + len + thick /2 <= xwid[RIGHT])
45 e->translate_axis (len, X_AXIS);
46 total.add_molecule (*e);
54 MAKE_SCHEME_CALLBACK (Note_head,brew_molecule,1);
57 Note_head::brew_molecule (SCM smob)
59 Grob *me = unsmob_grob (smob);
62 Real inter_f = Staff_symbol_referencer::staff_space (me)/2;
63 int sz = Staff_symbol_referencer::line_count (me)-1;
64 int p = (int) rint (Staff_symbol_referencer::position_f (me));
65 int streepjes_i = abs (p) < sz
69 SCM style = me->get_grob_property ("style");
70 if (!gh_symbol_p (style))
78 UGH: use grob-property.
80 Molecule out = Font_interface::get_default_font (me)->find_by_name (String ("noteheads-") +
81 ly_scm2string (scm_eval2 (gh_list (ly_symbol2scm ("find-notehead-symbol"),
82 me->get_grob_property ("duration-log"),
89 Direction dir = (Direction)sign (p);
90 Interval hd = out.extent (X_AXIS);
91 Real hw = hd.length ()/4;
92 Molecule ledger (ledger_line (Interval (hd[LEFT] - hw,
93 hd[RIGHT] + hw), me));
96 ledger.set_empty (true);
97 Real offs = (Staff_symbol_referencer::on_staffline (me))
101 for (int i=0; i < streepjes_i; i++)
104 s.translate_axis (-dir * inter_f * i*2 + offs,
106 out.add_molecule (s);
109 return out.smobbed_copy ();
113 Note_head::has_interface (Grob*m)
115 return m&& m->has_interface (ly_symbol2scm ("note-head-interface"));
119 MAKE_SCHEME_CALLBACK (Note_head,brew_ez_molecule,1);
122 Note_head::brew_ez_molecule (SCM smob)
124 Grob *me = unsmob_grob (smob);
125 int l = gh_scm2int (me->get_grob_property ("duration-log"));
128 SCM at = gh_list (ly_symbol2scm ("ez-ball"),
129 me->get_grob_property ("note-character"),
133 Box bx (Interval (0, 1.0), Interval (-0.5, 0.5));
136 return m.smobbed_copy ();
141 Note_head::stem_attachment_coordinate (Grob *me, Axis a)
143 SCM v = me->get_grob_property ("stem-attachment-function");
145 if (!gh_procedure_p (v))
148 SCM st = me->get_grob_property ("style");
149 SCM result = gh_apply (v, gh_list (st, SCM_UNDEFINED));
151 if (!gh_pair_p (result))
154 result = (a == X_AXIS) ? gh_car (result) : gh_cdr (result);
156 return gh_number_p (result) ? gh_scm2double (result) : 0.0;