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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
LilyPond is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
LilyPond is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#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 "grob.hh"
#include "international.hh"
#include "staff-symbol.hh"
#include "staff-symbol-referencer.hh"
#include "warn.hh"
static Stencil
internal_print (Grob *me, string *font_char)
{
string style = robust_symbol2string (me->get_property ("style"), "default");
string suffix = ::to_string (min (robust_scm2int (me->get_property ("duration-log"), 2), 2));
if (style != "default")
suffix = robust_scm2string (me->get_property ("glyph-name"), "");
Font_metric *fm = Font_interface::get_default_font (me);
string prefix = "noteheads.";
string idx_symmetric;
string idx_directed;
string idx_either = idx_symmetric = prefix + "s";
Stencil out = fm->find_by_name (idx_either + suffix);
if (out.is_empty ())
{
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_either = idx_directed = prefix + (stem_dir == UP ? "u" : "d");
out = fm->find_by_name (idx_either + suffix);
}
if (style == "mensural"
|| style == "neomensural"
|| style == "petrucci"
|| style == "baroque"
|| style == "kievan")
{
if (!Staff_symbol_referencer::on_line
(me,
robust_scm2int (me->get_property ("staff-position"), 0)))
{
Stencil test = fm->find_by_name (idx_either + "r" + suffix);
if (!test.is_empty ())
{
idx_either += "r";
out = test;
}
}
}
if (style == "kievan"
&& 3 == robust_scm2int (me->get_property ("duration-log"), 2))
{
Grob *stem = unsmob<Grob> (me->get_object ("stem"));
Grob *beam = unsmob<Grob> (stem->get_object ("beam"));
if (beam)
out = fm->find_by_name (idx_either + "2kievan");
}
idx_either += suffix;
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 ();
}
MAKE_SCHEME_CALLBACK (Note_head, include_ledger_line_height, 1);
SCM
Note_head::include_ledger_line_height (SCM smob)
{
Grob *me = unsmob<Grob> (smob);
Grob *staff = Staff_symbol_referencer::get_staff_symbol (me);
if (staff)
{
Real ss = Staff_symbol::staff_space (staff);
Interval lines = Staff_symbol::line_span (staff) * (ss / 2.0);
Real my_pos = Staff_symbol_referencer::get_position (me) * ss / 2.0;
Interval my_ext = me->extent (me, Y_AXIS) + my_pos;
// The +1 and -1 come from the fact that we only want to add
// the interval between the note and the first ledger line, not
// the whole interval between the note and the staff.
Interval iv (min (0.0, lines[UP] - my_ext[DOWN] + 1),
max (0.0, lines[DOWN] - my_ext[UP] - 1));
return ly_interval2scm (iv);
}
return ly_interval2scm (Interval (0, 0));
}
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, const string &key)
{
Offset att;
int k = fm->name_to_index (key);
if (k >= 0)
{
Box b = fm->get_indexed_char_dimensions (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,
"A note head. There are many possible values for"
" @code{style}. For a complete list, see"
" @ruser{Note head styles}.",
/* properties */
"duration-log "
"note-names "
"accidental-grob "
"ignore-ambitus "
"glyph-name "
"stem-attachment "
"style "
"ledger-positions "
);
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