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/* This file is part of the KDE project
Copyright (C) 2001 Lukas Tinkl <[email protected]>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
This file borrows from the QSize class;
Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
*/
#ifndef koSize_h
#define koSize_h
#include <qsize.h>
#include <qtl.h>
/**
* A size whose coordinates are floating-point values ( "double"s ).
* The API isn't documented, it's a perfect mirror of QSize.
*/
class KoSize
{
public:
KoSize();
KoSize( double w, double h );
bool isNull() const;
bool isEmpty() const;
bool isValid() const;
double width() const;
double height() const;
void setWidth( double w );
void setHeight( double h );
KoSize expandedTo( const KoSize & ) const;
KoSize boundedTo( const KoSize & ) const;
double &rwidth();
double &rheight();
KoSize &operator+=( const KoSize & );
KoSize &operator-=( const KoSize & );
KoSize &operator*=( int c );
KoSize &operator*=( double c );
KoSize &operator/=( int c );
KoSize &operator/=( double c );
friend inline bool operator==( const KoSize &, const KoSize & );
friend inline bool operator!=( const KoSize &, const KoSize & );
friend inline const KoSize operator+( const KoSize &, const KoSize & );
friend inline const KoSize operator-( const KoSize &, const KoSize & );
friend inline const KoSize operator*( const KoSize &, int );
friend inline const KoSize operator*( int, const KoSize & );
friend inline const KoSize operator*( const KoSize &, double );
friend inline const KoSize operator*( double, const KoSize & );
friend inline const KoSize operator/( const KoSize &, int );
friend inline const KoSize operator/( const KoSize &, double );
inline QSize toQSize() const;
static KoSize fromQSize( const QSize &size )
{
return KoSize(size.width(), size.height());
}
void transpose()
{
qSwap(wd, ht);
}
private:
static void warningDivByZero()
{
#if defined(QT_CHECK_MATH)
qWarning( "KoSize: Division by zero error" );
#endif
}
double wd;
double ht;
};
/*****************************************************************************
KoSize inline functions
*****************************************************************************/
inline KoSize::KoSize()
{ wd = ht = -1.0; }
inline KoSize::KoSize( double w, double h )
{ wd=w; ht=h; }
inline bool KoSize::isNull() const
{ return wd==0.0 && ht==0.0; }
inline bool KoSize::isEmpty() const
{ return wd<=0.0 || ht<=0.0; }
inline bool KoSize::isValid() const
{ return wd>=0.0 && ht>=0.0; }
inline double KoSize::width() const
{ return wd; }
inline double KoSize::height() const
{ return ht; }
inline void KoSize::setWidth( double w )
{ wd=w; }
inline void KoSize::setHeight( double h )
{ ht=h; }
inline double &KoSize::rwidth()
{ return wd; }
inline double &KoSize::rheight()
{ return ht; }
inline KoSize &KoSize::operator+=( const KoSize &s )
{ wd+=s.wd; ht+=s.ht; return *this; }
inline KoSize &KoSize::operator-=( const KoSize &s )
{ wd-=s.wd; ht-=s.ht; return *this; }
inline KoSize &KoSize::operator*=( int c )
{ wd*=c; ht*=c; return *this; }
inline KoSize &KoSize::operator*=( double c )
{ wd=wd*c; ht=ht*c; return *this; }
inline bool operator==( const KoSize &s1, const KoSize &s2 )
{ return s1.wd == s2.wd && s1.ht == s2.ht; }
inline bool operator!=( const KoSize &s1, const KoSize &s2 )
{ return s1.wd != s2.wd || s1.ht != s2.ht; }
inline const KoSize operator+( const KoSize & s1, const KoSize & s2 )
{ return KoSize(s1.wd+s2.wd, s1.ht+s2.ht); }
inline const KoSize operator-( const KoSize &s1, const KoSize &s2 )
{ return KoSize(s1.wd-s2.wd, s1.ht-s2.ht); }
inline const KoSize operator*( const KoSize &s, int c )
{ return KoSize(s.wd*c, s.ht*c); }
inline const KoSize operator*( int c, const KoSize &s )
{ return KoSize(s.wd*c, s.ht*c); }
inline const KoSize operator*( const KoSize &s, double c )
{ return KoSize(s.wd*c, s.ht*c); }
inline const KoSize operator*( double c, const KoSize &s )
{ return KoSize(s.wd*c, s.ht*c); }
inline KoSize &KoSize::operator/=( int c )
{
#if defined(QT_CHECK_MATH)
if ( c == 0 )
warningDivByZero();
#endif
wd/=c; ht/=c;
return *this;
}
inline KoSize &KoSize::operator/=( double c )
{
#if defined(QT_CHECK_MATH)
if ( c == 0.0 )
warningDivByZero();
#endif
wd=wd/c; ht=ht/c;
return *this;
}
inline const KoSize operator/( const KoSize &s, int c )
{
#if defined(QT_CHECK_MATH)
if ( c == 0 )
KoSize::warningDivByZero();
#endif
return KoSize(s.wd/c, s.ht/c);
}
inline const KoSize operator/( const KoSize &s, double c )
{
#if defined(QT_CHECK_MATH)
if ( c == 0.0 )
KoSize::warningDivByZero();
#endif
return KoSize(s.wd/c, s.ht/c);
}
inline KoSize KoSize::expandedTo( const KoSize & otherSize ) const
{
return KoSize( QMAX(wd,otherSize.wd), QMAX(ht,otherSize.ht) );
}
inline KoSize KoSize::boundedTo( const KoSize & otherSize ) const
{
return KoSize( QMIN(wd,otherSize.wd), QMIN(ht,otherSize.ht) );
}
inline QSize KoSize::toQSize() const
{
return QSize(qRound(wd), qRound(ht));
}
/******************************
kdDebug support
*******************************/
#include <kdebug.h>
inline kdbgstream operator<<( kdbgstream str, const KoSize & sz ) { str << "[" << sz.width() << "x" << sz.height() << "]"; return str; }
inline kndbgstream operator<<( kndbgstream str, const KoSize & ) { return str; }
#endif
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