343 lines
6.8 KiB
C++
343 lines
6.8 KiB
C++
// -*- C++ -*-
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/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
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Written by James Clark (jjc@jclark.com)
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This file is part of groff.
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groff is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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groff is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with groff; see the file COPYING. If not, write to the Free Software
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: hvunits.h,v 1.3 1993/08/02 17:45:36 mycroft Exp $
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*/
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class vunits {
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int n;
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public:
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vunits();
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vunits(units);
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units to_units();
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int is_zero();
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vunits& operator+=(const vunits&);
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vunits& operator-=(const vunits&);
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friend inline vunits scale(vunits n, units x, units y); // scale n by x/y
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friend inline vunits scale(vunits n, vunits x, vunits y);
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friend inline vunits operator +(const vunits&, const vunits&);
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friend inline vunits operator -(const vunits&, const vunits&);
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friend inline vunits operator -(const vunits&);
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friend inline int operator /(const vunits&, const vunits&);
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friend inline vunits operator /(const vunits&, int);
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friend inline vunits operator *(const vunits&, int);
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friend inline vunits operator *(int, const vunits&);
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friend inline int operator <(const vunits&, const vunits&);
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friend inline int operator >(const vunits&, const vunits&);
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friend inline int operator <=(const vunits&, const vunits&);
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friend inline int operator >=(const vunits&, const vunits&);
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friend inline int operator ==(const vunits&, const vunits&);
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friend inline int operator !=(const vunits&, const vunits&);
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};
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extern vunits V0;
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class hunits {
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int n;
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public:
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hunits();
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hunits(units);
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units to_units();
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int is_zero();
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hunits& operator+=(const hunits&);
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hunits& operator-=(const hunits&);
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friend inline hunits scale(hunits n, units x, units y); // scale n by x/y
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friend inline hunits scale(hunits n, double x);
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friend inline hunits operator +(const hunits&, const hunits&);
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friend inline hunits operator -(const hunits&, const hunits&);
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friend inline hunits operator -(const hunits&);
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friend inline int operator /(const hunits&, const hunits&);
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friend inline hunits operator /(const hunits&, int);
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friend inline hunits operator *(const hunits&, int);
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friend inline hunits operator *(int, const hunits&);
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friend inline int operator <(const hunits&, const hunits&);
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friend inline int operator >(const hunits&, const hunits&);
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friend inline int operator <=(const hunits&, const hunits&);
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friend inline int operator >=(const hunits&, const hunits&);
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friend inline int operator ==(const hunits&, const hunits&);
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friend inline int operator !=(const hunits&, const hunits&);
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};
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extern hunits H0;
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extern int get_vunits(vunits *, unsigned char si);
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extern int get_hunits(hunits *, unsigned char si);
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extern int get_vunits(vunits *, unsigned char si, vunits prev_value);
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extern int get_hunits(hunits *, unsigned char si, hunits prev_value);
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inline vunits:: vunits() : n(0)
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{
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}
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inline units vunits::to_units()
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{
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return n*vresolution;
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}
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inline int vunits::is_zero()
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{
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return n == 0;
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}
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inline vunits operator +(const vunits & x, const vunits & y)
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{
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vunits r;
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r = x;
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r.n += y.n;
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return r;
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}
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inline vunits operator -(const vunits & x, const vunits & y)
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{
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vunits r;
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r = x;
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r.n -= y.n;
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return r;
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}
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inline vunits operator -(const vunits & x)
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{
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vunits r;
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r.n = -x.n;
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return r;
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}
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inline int operator /(const vunits & x, const vunits & y)
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{
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return x.n/y.n;
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}
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inline vunits operator /(const vunits & x, int n)
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{
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vunits r;
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r = x;
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r.n /= n;
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return r;
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}
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inline vunits operator *(const vunits & x, int n)
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{
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vunits r;
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r = x;
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r.n *= n;
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return r;
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}
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inline vunits operator *(int n, const vunits & x)
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{
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vunits r;
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r = x;
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r.n *= n;
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return r;
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}
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inline int operator <(const vunits & x, const vunits & y)
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{
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return x.n < y.n;
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}
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inline int operator >(const vunits & x, const vunits & y)
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{
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return x.n > y.n;
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}
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inline int operator <=(const vunits & x, const vunits & y)
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{
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return x.n <= y.n;
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}
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inline int operator >=(const vunits & x, const vunits & y)
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{
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return x.n >= y.n;
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}
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inline int operator ==(const vunits & x, const vunits & y)
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{
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return x.n == y.n;
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}
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inline int operator !=(const vunits & x, const vunits & y)
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{
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return x.n != y.n;
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}
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inline vunits& vunits::operator+=(const vunits & x)
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{
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n += x.n;
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return *this;
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}
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inline vunits& vunits::operator-=(const vunits & x)
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{
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n -= x.n;
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return *this;
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}
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inline hunits:: hunits() : n(0)
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{
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}
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inline units hunits::to_units()
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{
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return n*hresolution;
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}
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inline int hunits::is_zero()
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{
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return n == 0;
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}
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inline hunits operator +(const hunits & x, const hunits & y)
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{
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hunits r;
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r = x;
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r.n += y.n;
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return r;
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}
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inline hunits operator -(const hunits & x, const hunits & y)
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{
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hunits r;
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r = x;
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r.n -= y.n;
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return r;
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}
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inline hunits operator -(const hunits & x)
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{
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hunits r;
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r = x;
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r.n = -x.n;
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return r;
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}
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inline int operator /(const hunits & x, const hunits & y)
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{
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return x.n/y.n;
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}
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inline hunits operator /(const hunits & x, int n)
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{
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hunits r;
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r = x;
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r.n /= n;
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return r;
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}
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inline hunits operator *(const hunits & x, int n)
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{
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hunits r;
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r = x;
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r.n *= n;
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return r;
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}
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inline hunits operator *(int n, const hunits & x)
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{
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hunits r;
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r = x;
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r.n *= n;
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return r;
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}
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inline int operator <(const hunits & x, const hunits & y)
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{
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return x.n < y.n;
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}
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inline int operator >(const hunits & x, const hunits & y)
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{
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return x.n > y.n;
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}
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inline int operator <=(const hunits & x, const hunits & y)
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{
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return x.n <= y.n;
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}
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inline int operator >=(const hunits & x, const hunits & y)
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{
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return x.n >= y.n;
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}
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inline int operator ==(const hunits & x, const hunits & y)
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{
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return x.n == y.n;
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}
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inline int operator !=(const hunits & x, const hunits & y)
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{
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return x.n != y.n;
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}
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inline hunits& hunits::operator+=(const hunits & x)
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{
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n += x.n;
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return *this;
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}
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inline hunits& hunits::operator-=(const hunits & x)
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{
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n -= x.n;
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return *this;
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}
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inline hunits scale(hunits n, units x, units y)
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{
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hunits r;
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r.n = scale(n.n, x, y);
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return r;
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}
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inline vunits scale(vunits n, units x, units y)
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{
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vunits r;
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r.n = scale(n.n, x, y);
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return r;
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}
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inline vunits scale(vunits n, vunits x, vunits y)
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{
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vunits r;
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r.n = scale(n.n, x.n, y.n);
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return r;
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}
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inline hunits scale(hunits n, double x)
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{
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hunits r;
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r.n = int(n.n*x);
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return r;
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}
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inline units scale(units n, double x)
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{
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return int(n*x);
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}
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inline units points_to_units(units n)
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{
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return scale(n, units_per_inch, 72);
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}
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