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/*
notehead.cc -- implement Note_head
source file of the GNU LilyPond music typesetter
(c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "misc.hh"
#include "dots.hh"
#include "note-head.hh"
#include "debug.hh"
#include "lookup.hh"
#include "molecule.hh"
#include "musical-request.hh"
#include "dimension-cache.hh"
#include "staff-symbol-referencer.hh"
/*
build a ledger line for small pieces.
*/
Molecule
Note_head::ledger_line (Interval xwid, Score_element *me)
{
Drul_array<Molecule> endings;
endings[LEFT] = me->lookup_l()->afm_find ("noteheads-ledgerending");
Molecule *e = &endings[LEFT];
endings[RIGHT] = *e;
Real thick = e->extent (Y_AXIS).length();
Real len = e->extent (X_AXIS).length () - thick;
Molecule total;
Direction d = LEFT;
do {
endings[d].translate_axis (xwid[d] - endings[d].extent (X_AXIS)[d], X_AXIS);
total.add_molecule (endings[d]);
} while ((flip(&d)) != LEFT);
Real xpos = xwid [LEFT] + len;
while (xpos + len + thick /2 <= xwid[RIGHT])
{
e->translate_axis (len, X_AXIS);
total.add_molecule (*e);
xpos += len;
}
return total;
}
MAKE_SCHEME_SCORE_ELEMENT_CALLBACK(Note_head,brew_molecule);
SCM
Note_head::brew_molecule (SCM smob)
{
Score_element *me = unsmob_element (smob);
Staff_symbol_referencer_interface si (me);
Real inter_f = si.staff_space ()/2;
int sz = si.line_count ()-1;
Real p = si.position_f ();
int streepjes_i = abs (p) < sz
? 0
: (abs((int)p) - sz) /2;
SCM style = me->get_elt_property ("style");
if (style == SCM_UNDEFINED)
{
style = ly_symbol2scm("default");
}
Molecule out = me->lookup_l()->afm_find (String ("noteheads-") +
ly_scm2string (scm_eval (gh_list (ly_symbol2scm("find-notehead-symbol"),
me->get_elt_property ("duration-log"),
ly_quote_scm(style),
SCM_UNDEFINED))));
if (streepjes_i)
{
Direction dir = (Direction)sign (p);
Interval hd = out.extent (X_AXIS);
Real hw = hd.length ()/4;
Molecule ledger (ledger_line (Interval (hd[LEFT] - hw,
hd[RIGHT] + hw), me));
ledger.set_empty (true);
int parity = abs(int (p)) % 2;
for (int i=0; i < streepjes_i; i++)
{
Molecule s (ledger);
s.translate_axis (-dir * inter_f * (i*2 + parity),
Y_AXIS);
out.add_molecule (s);
}
}
return out.create_scheme();
}
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