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/*
notehead.cc -- implement Note_head
source file of the GNU LilyPond music typesetter
(c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "note-head.hh"
#include <cmath>
#include <cctype>
#include <algorithm> // min, max
using namespace std;
#include "directional-element-interface.hh"
#include "font-interface.hh"
#include "international.hh"
#include "warn.hh"
#include "grob.hh"
static Stencil
internal_print (Grob *me, string *font_char)
{
SCM style = me->get_property ("style");
if (!scm_is_symbol (style))
style = ly_symbol2scm ("default");
string suffix = to_string (min (robust_scm2int (me->get_property ("duration-log"), 2), 2));
if (style != ly_symbol2scm ("default"))
{
SCM gn = me->get_property ("glyph-name");
if (scm_is_string (gn))
suffix = ly_scm2string (gn);
}
Font_metric *fm = Font_interface::get_default_font (me);
string idx_symmetric;
string idx_directed;
string idx_either;
idx_symmetric = idx_either = "noteheads.s" + suffix;
Stencil out = fm->find_by_name (idx_symmetric);
if (out.is_empty ())
{
string prefix = "noteheads.";
Grob *stem = unsmob_grob (me->get_object ("stem"));
Direction stem_dir = stem ? get_grob_direction (stem) : CENTER;
if (stem_dir == CENTER)
programming_error ("must have stem dir for note head");
idx_directed = idx_either =
prefix + ((stem_dir == UP) ? "u" : "d") + suffix;
out = fm->find_by_name (idx_directed);
}
if (out.is_empty ())
{
me->warning (_f ("none of note heads `%s' or `%s' found",
idx_symmetric.c_str (), idx_directed.c_str ()));
out = Stencil (Box (Interval (0, 0), Interval (0, 0)), SCM_EOL);
}
else
*font_char = idx_either;
return out;
}
/*
TODO: make stem X-parent of notehead.
*/
MAKE_SCHEME_CALLBACK (Note_head, stem_x_shift, 1);
SCM
Note_head::stem_x_shift (SCM smob)
{
Grob *me = unsmob_grob (smob);
Grob *stem = unsmob_grob (me->get_object ("stem"));
if (stem)
(void) stem->get_property ("positioning-done");
return scm_from_int (0);
}
MAKE_SCHEME_CALLBACK (Note_head, print, 1);
SCM
Note_head::print (SCM smob)
{
Grob *me = unsmob_grob (smob);
string idx;
return internal_print (me, &idx).smobbed_copy ();
}
Real
Note_head::stem_attachment_coordinate (Grob *me, Axis a)
{
Offset off = robust_scm2offset (me->get_property ("stem-attachment"),
Offset (0,0));
return off [a];
}
Offset
Note_head::get_stem_attachment (Font_metric *fm, string key)
{
Offset att;
int k = fm->name_to_index (key);
if (k >= 0)
{
Box b = fm->get_indexed_char (k);
Offset wxwy = fm->attachment_point (key);
for (int i = X_AXIS ; i < NO_AXES; i++)
{
Axis a = Axis (i);
Interval v = b[a];
if (!v.is_empty ())
{
att[a] = (2 * (wxwy[a] - v.center ()) / v.length ());
}
}
}
return att;
}
MAKE_SCHEME_CALLBACK (Note_head, calc_stem_attachment, 1);
SCM
Note_head::calc_stem_attachment (SCM smob)
{
Grob *me = unsmob_grob (smob);
Font_metric *fm = Font_interface::get_default_font (me);
string key;
internal_print (me, &key);
return ly_offset2scm (get_stem_attachment (fm, key));
}
ADD_INTERFACE (Note_head,
"Note head.",
/* properties */
"note-names "
"accidental-grob "
"glyph-name "
"stem-attachment "
"style "
);
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