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// -*- related-file-name: "../include/efont/metrics.hh" -*-
/* metrics.{cc,hh} -- generic font metrics
*
* Copyright (c) 1998-2012 Eddie Kohler
*
* This program 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 2 of the License, or (at your option)
* any later version. This program 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.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <efont/metrics.hh>
#include <efont/t1cs.hh> /* for UNKDOUBLE */
namespace Efont {
Metrics::Metrics()
: _name_map(-1),
_scale(1), _fdv(fdLast, UNKDOUBLE),
_xt_map(0),
_uses(0)
{
_xt.push_back((MetricsXt *)0);
}
Metrics::Metrics(PermString font_name, PermString full_name, const Metrics &m)
: _font_name(font_name),
_family(m._family), _full_name(full_name), _version(m._version),
_name_map(m._name_map), _names(m._names), _encoding(m._encoding),
_scale(1), _fdv(fdLast, UNKDOUBLE),
_pairp(m._pairp),
_xt_map(0),
_uses(0)
{
reserve_glyphs(m._wdv.size());
_kernv.resize(m._kernv.size(), UNKDOUBLE);
_xt.push_back((MetricsXt *)0);
}
Metrics::~Metrics()
{
assert(_uses == 0);
for (int i = 1; i < _xt.size(); i++)
delete _xt[i];
}
void
Metrics::set_font_name(PermString n)
{
assert(!_font_name);
_font_name = n;
}
void
Metrics::reserve_glyphs(int amt)
{
if (amt <= _wdv.size()) return;
_wdv.resize(amt, UNKDOUBLE);
_lfv.resize(amt, UNKDOUBLE);
_rtv.resize(amt, UNKDOUBLE);
_tpv.resize(amt, UNKDOUBLE);
_btv.resize(amt, UNKDOUBLE);
_encoding.reserve_glyphs(amt);
_pairp.reserve_glyphs(amt);
for (int i = 1; i < _xt.size(); i++)
_xt[i]->reserve_glyphs(amt);
}
GlyphIndex
Metrics::add_glyph(PermString n)
{
if (nglyphs() >= _wdv.size())
reserve_glyphs(nglyphs() ? nglyphs() * 2 : 64);
GlyphIndex gi = _names.size();
_names.push_back(n);
_name_map.insert(n, gi);
return gi;
}
static void
set_dimen(Vector<double> &dest, const Vector<double> &src, double scale,
bool increment)
{
int c = src.size();
if (increment)
for (int i = 0; i < c; i++)
dest.at_u(i) += src.at_u(i) * scale;
else if (scale < 0.9999 || scale > 1.0001)
for (int i = 0; i < c; i++)
dest.at_u(i) = src.at_u(i) * scale;
else
dest = src;
}
void
Metrics::interpolate_dimens(const Metrics &m, double scale, bool increment)
{
set_dimen(_fdv, m._fdv, scale, increment);
set_dimen(_wdv, m._wdv, scale, increment);
set_dimen(_lfv, m._lfv, scale, increment);
set_dimen(_rtv, m._rtv, scale, increment);
set_dimen(_tpv, m._tpv, scale, increment);
set_dimen(_btv, m._btv, scale, increment);
set_dimen(_kernv, m._kernv, scale, increment);
}
void
Metrics::add_xt(MetricsXt *mxt)
{
int n = _xt.size();
_xt.push_back(mxt);
_xt_map.insert(mxt->kind(), n);
if (_wdv.size() > 0)
mxt->reserve_glyphs(_wdv.size());
}
}
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