Qt Toolkit - qsize.h include file

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# qsize.h

This is the verbatim text of the qsize.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/src/kernel/qsize.h   2.3.7   edited 2001-01-26 $
    **
    ** Definition of QSize class
    **
    ** Created : 931028
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the kernel module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
    ** licenses may use this file in accordance with the Qt Commercial License
    ** Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QSIZE_H
    #define QSIZE_H

    #ifndef QT_H
    #include "qpoint.h"
    #endif // QT_H

    class Q_EXPORT QSize
    {
    public:
        QSize();
        QSize( int w, int h );

        bool   isNull()     const;
        bool   isEmpty()    const;
        bool   isValid()    const;

        int    width()      const;
        int    height()     const;
        void   setWidth( int w );
        void   setHeight( int h );
        void   transpose();

        QSize expandedTo( const QSize & ) const;
        QSize boundedTo( const QSize & ) const;

        QCOORD &rwidth();
        QCOORD &rheight();

        QSize &operator+=( const QSize & );
        QSize &operator-=( const QSize & );
        QSize &operator*=( int c );
        QSize &operator*=( double c );
        QSize &operator/=( int c );
        QSize &operator/=( double c );

        friend inline bool  operator==( const QSize &, const QSize & );
        friend inline bool  operator!=( const QSize &, const QSize & );
        friend inline QSize operator+( const QSize &, const QSize & );
        friend inline QSize operator-( const QSize &, const QSize & );
        friend inline QSize operator*( const QSize &, int );
        friend inline QSize operator*( int, const QSize & );
        friend inline QSize operator*( const QSize &, double );
        friend inline QSize operator*( double, const QSize & );
        friend inline QSize operator/( const QSize &, int );
        friend inline QSize operator/( const QSize &, double );

    private:
        static void warningDivByZero();

        QCOORD wd;
        QCOORD ht;
    };

    /*****************************************************************************
      QSize stream functions
     *****************************************************************************/

    Q_EXPORT QDataStream &operator<<( QDataStream &, const QSize & );
    Q_EXPORT QDataStream &operator>>( QDataStream &, QSize & );

    /*****************************************************************************
      QSize inline functions
     *****************************************************************************/

    inline QSize::QSize()
    { wd = ht = -1; }

    inline QSize::QSize( int w, int h )
    { wd=(QCOORD)w; ht=(QCOORD)h; }

    inline bool QSize::isNull() const
    { return wd==0 && ht==0; }

    inline bool QSize::isEmpty() const
    { return wd<1 || ht<1; }

    inline bool QSize::isValid() const
    { return wd>=0 && ht>=0; }

    inline int QSize::width() const
    { return wd; }

    inline int QSize::height() const
    { return ht; }

    inline void QSize::setWidth( int w )
    { wd=(QCOORD)w; }

    inline void QSize::setHeight( int h )
    { ht=(QCOORD)h; }

    inline QCOORD &QSize::rwidth()
    { return wd; }

    inline QCOORD &QSize::rheight()
    { return ht; }

    inline QSize &QSize::operator+=( const QSize &s )
    { wd+=s.wd; ht+=s.ht; return *this; }

    inline QSize &QSize::operator-=( const QSize &s )
    { wd-=s.wd; ht-=s.ht; return *this; }

    inline QSize &QSize::operator*=( int c )
    { wd*=(QCOORD)c; ht*=(QCOORD)c; return *this; }

    inline QSize &QSize::operator*=( double c )
    { wd=(QCOORD)(wd*c); ht=(QCOORD)(ht*c); return *this; }

    inline bool operator==( const QSize &s1, const QSize &s2 )
    { return s1.wd == s2.wd && s1.ht == s2.ht; }

    inline bool operator!=( const QSize &s1, const QSize &s2 )
    { return s1.wd != s2.wd || s1.ht != s2.ht; }

    inline QSize operator+( const QSize & s1, const QSize & s2 )
    { return QSize(s1.wd+s2.wd, s1.ht+s2.ht); }

    inline QSize operator-( const QSize &s1, const QSize &s2 )
    { return QSize(s1.wd-s2.wd, s1.ht-s2.ht); }

    inline QSize operator*( const QSize &s, int c )
    { return QSize(s.wd*c, s.ht*c); }

    inline QSize operator*( int c, const QSize &s )
    {  return QSize(s.wd*c, s.ht*c); }

    inline QSize operator*( const QSize &s, double c )
    { return QSize((QCOORD)(s.wd*c), (QCOORD)(s.ht*c)); }

    inline QSize operator*( double c, const QSize &s )
    { return QSize((QCOORD)(s.wd*c), (QCOORD)(s.ht*c)); }

    inline QSize &QSize::operator/=( int c )
    {
    #if defined(CHECK_MATH)
        if ( c == 0 )
            warningDivByZero();
    #endif
        wd/=(QCOORD)c; ht/=(QCOORD)c;
        return *this;
    }

    inline QSize &QSize::operator/=( double c )
    {
    #if defined(CHECK_MATH)
        if ( c == 0.0 )
            warningDivByZero();
    #endif
        wd=(QCOORD)(wd/c); ht=(QCOORD)(ht/c);
        return *this;
    }

    inline QSize operator/( const QSize &s, int c )
    {
    #if defined(CHECK_MATH)
        if ( c == 0 )
            QSize::warningDivByZero();
    #endif
        return QSize(s.wd/c, s.ht/c);
    }

    inline QSize operator/( const QSize &s, double c )
    {
    #if defined(CHECK_MATH)
        if ( c == 0.0 )
            QSize::warningDivByZero();
    #endif
        return QSize((QCOORD)(s.wd/c), (QCOORD)(s.ht/c));
    }

    inline QSize QSize::expandedTo( const QSize & otherSize ) const
    {
        return QSize( QMAX(wd,otherSize.wd), QMAX(ht,otherSize.ht) );
    }

    inline QSize QSize::boundedTo( const QSize & otherSize ) const
    {
        return QSize( QMIN(wd,otherSize.wd), QMIN(ht,otherSize.ht) );
    }

    #endif // QSIZE_H