Qt Toolkit - qsize.h include file

# qsize.h

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

    /****************************************************************************
    ** $Id: qsize.h,v 2.7.2.3 1998/11/02 16:09:37 hanord Exp $
    **
    ** Definition of QSize class
    **
    ** Created : 931028
    **
    ** Copyright (C) 1992-1999 Troll Tech AS.  All rights reserved.
    **
    ** This file is part of Qt Free Edition, version 1.45.
    **
    ** See the file LICENSE included in the distribution for the usage
    ** and distribution terms, or http://www.troll.no/free-license.html.
    **
    ** IMPORTANT NOTE: You may NOT copy this file or any part of it into
    ** your own programs or libraries.
    **
    ** Please see http://www.troll.no/pricing.html for information about
    ** Qt Professional Edition, which is this same library but with a
    ** license which allows creation of commercial/proprietary software.
    **
    *****************************************************************************/

    #ifndef QSIZE_H
    #define QSIZE_H

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

    #if (defined(QSIZE_C) || defined(DEBUG)) && !defined(_OS_WIN32_)
    #define QSIZE_DEBUG
    #endif

    class Q_EXPORT QSize
    {
    public:
        QSize()     { wd = ht = -1; }
        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*=( float c );
        QSize &operator/=( int c );
        QSize &operator/=( float 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 &, float );
        friend inline QSize operator*( float, const QSize & );
    #if defined(QSIZE_DEBUG)
        friend Q_EXPORT QSize operator/( const QSize &, int );
        friend Q_EXPORT QSize operator/( const QSize &, float );
    #else
        friend inline QSize operator/( const QSize &, int );
        friend inline QSize operator/( const QSize &, float );
    #endif

        static void warningDivByZero();

    private:
        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( 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*=( float 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, float c )
    { return QSize((QCOORD)(s.wd*c), (QCOORD)(s.ht*c)); }

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

    #if !defined(QSIZE_DEBUG)

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

    #endif // no-debug functions

    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