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