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// -*- C++ -*-
/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
Written by James Clark (jjc@jclark.com)
This file is part of groff.
groff 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, or (at your option) any later
version.
groff 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 groff; see the file COPYING. If not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
class vunits {
int n;
public:
vunits();
vunits(units);
units to_units();
int is_zero();
vunits& operator+=(const vunits&);
vunits& operator-=(const vunits&);
friend inline vunits scale(vunits n, units x, units y); // scale n by x/y
friend inline vunits scale(vunits n, vunits x, vunits y);
friend inline vunits operator +(const vunits&, const vunits&);
friend inline vunits operator -(const vunits&, const vunits&);
friend inline vunits operator -(const vunits&);
friend inline int operator /(const vunits&, const vunits&);
friend inline vunits operator /(const vunits&, int);
friend inline vunits operator *(const vunits&, int);
friend inline vunits operator *(int, const vunits&);
friend inline int operator <(const vunits&, const vunits&);
friend inline int operator >(const vunits&, const vunits&);
friend inline int operator <=(const vunits&, const vunits&);
friend inline int operator >=(const vunits&, const vunits&);
friend inline int operator ==(const vunits&, const vunits&);
friend inline int operator !=(const vunits&, const vunits&);
};
extern vunits V0;
class hunits {
int n;
public:
hunits();
hunits(units);
units to_units();
int is_zero();
hunits& operator+=(const hunits&);
hunits& operator-=(const hunits&);
friend inline hunits scale(hunits n, units x, units y); // scale n by x/y
friend inline hunits scale(hunits n, double x);
friend inline hunits operator +(const hunits&, const hunits&);
friend inline hunits operator -(const hunits&, const hunits&);
friend inline hunits operator -(const hunits&);
friend inline int operator /(const hunits&, const hunits&);
friend inline hunits operator /(const hunits&, int);
friend inline hunits operator *(const hunits&, int);
friend inline hunits operator *(int, const hunits&);
friend inline int operator <(const hunits&, const hunits&);
friend inline int operator >(const hunits&, const hunits&);
friend inline int operator <=(const hunits&, const hunits&);
friend inline int operator >=(const hunits&, const hunits&);
friend inline int operator ==(const hunits&, const hunits&);
friend inline int operator !=(const hunits&, const hunits&);
};
extern hunits H0;
extern int get_vunits(vunits *, unsigned char si);
extern int get_hunits(hunits *, unsigned char si);
extern int get_vunits(vunits *, unsigned char si, vunits prev_value);
extern int get_hunits(hunits *, unsigned char si, hunits prev_value);
inline vunits:: vunits() : n(0)
{
}
inline units vunits::to_units()
{
return n*vresolution;
}
inline int vunits::is_zero()
{
return n == 0;
}
inline vunits operator +(const vunits & x, const vunits & y)
{
vunits r;
r = x;
r.n += y.n;
return r;
}
inline vunits operator -(const vunits & x, const vunits & y)
{
vunits r;
r = x;
r.n -= y.n;
return r;
}
inline vunits operator -(const vunits & x)
{
vunits r;
r.n = -x.n;
return r;
}
inline int operator /(const vunits & x, const vunits & y)
{
return x.n/y.n;
}
inline vunits operator /(const vunits & x, int n)
{
vunits r;
r = x;
r.n /= n;
return r;
}
inline vunits operator *(const vunits & x, int n)
{
vunits r;
r = x;
r.n *= n;
return r;
}
inline vunits operator *(int n, const vunits & x)
{
vunits r;
r = x;
r.n *= n;
return r;
}
inline int operator <(const vunits & x, const vunits & y)
{
return x.n < y.n;
}
inline int operator >(const vunits & x, const vunits & y)
{
return x.n > y.n;
}
inline int operator <=(const vunits & x, const vunits & y)
{
return x.n <= y.n;
}
inline int operator >=(const vunits & x, const vunits & y)
{
return x.n >= y.n;
}
inline int operator ==(const vunits & x, const vunits & y)
{
return x.n == y.n;
}
inline int operator !=(const vunits & x, const vunits & y)
{
return x.n != y.n;
}
inline vunits& vunits::operator+=(const vunits & x)
{
n += x.n;
return *this;
}
inline vunits& vunits::operator-=(const vunits & x)
{
n -= x.n;
return *this;
}
inline hunits:: hunits() : n(0)
{
}
inline units hunits::to_units()
{
return n*hresolution;
}
inline int hunits::is_zero()
{
return n == 0;
}
inline hunits operator +(const hunits & x, const hunits & y)
{
hunits r;
r = x;
r.n += y.n;
return r;
}
inline hunits operator -(const hunits & x, const hunits & y)
{
hunits r;
r = x;
r.n -= y.n;
return r;
}
inline hunits operator -(const hunits & x)
{
hunits r;
r = x;
r.n = -x.n;
return r;
}
inline int operator /(const hunits & x, const hunits & y)
{
return x.n/y.n;
}
inline hunits operator /(const hunits & x, int n)
{
hunits r;
r = x;
r.n /= n;
return r;
}
inline hunits operator *(const hunits & x, int n)
{
hunits r;
r = x;
r.n *= n;
return r;
}
inline hunits operator *(int n, const hunits & x)
{
hunits r;
r = x;
r.n *= n;
return r;
}
inline int operator <(const hunits & x, const hunits & y)
{
return x.n < y.n;
}
inline int operator >(const hunits & x, const hunits & y)
{
return x.n > y.n;
}
inline int operator <=(const hunits & x, const hunits & y)
{
return x.n <= y.n;
}
inline int operator >=(const hunits & x, const hunits & y)
{
return x.n >= y.n;
}
inline int operator ==(const hunits & x, const hunits & y)
{
return x.n == y.n;
}
inline int operator !=(const hunits & x, const hunits & y)
{
return x.n != y.n;
}
inline hunits& hunits::operator+=(const hunits & x)
{
n += x.n;
return *this;
}
inline hunits& hunits::operator-=(const hunits & x)
{
n -= x.n;
return *this;
}
inline hunits scale(hunits n, units x, units y)
{
hunits r;
r.n = scale(n.n, x, y);
return r;
}
inline vunits scale(vunits n, units x, units y)
{
vunits r;
r.n = scale(n.n, x, y);
return r;
}
inline vunits scale(vunits n, vunits x, vunits y)
{
vunits r;
r.n = scale(n.n, x.n, y.n);
return r;
}
inline hunits scale(hunits n, double x)
{
hunits r;
r.n = int(n.n*x);
return r;
}
inline units scale(units n, double x)
{
return int(n*x);
}
inline units points_to_units(units n)
{
return scale(n, units_per_inch, 72);
}
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