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# qpoint.h

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

    /****************************************************************************
    ** $Id: qt/src/kernel/qpoint.h   2.3.1   edited 2001-01-26 $
    **
    ** Definition of QPoint 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 QPOINT_H
    #define QPOINT_H

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

    class Q_EXPORT QPoint
    {
    public:
        QPoint();
        QPoint( int xpos, int ypos );

        bool   isNull()     const;

        int    x()          const;
        int    y()          const;
        void   setX( int x );
        void   setY( int y );

        int manhattanLength() const;

        QCOORD &rx();
        QCOORD &ry();

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

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

    private:
        static void warningDivByZero();

    #if defined(_OS_MAC_)
        QCOORD yp;
        QCOORD xp;
    #else
        QCOORD xp;
        QCOORD yp;
    #endif
    };

    /*****************************************************************************
      QPoint stream functions
     *****************************************************************************/
    #ifndef QT_NO_DATASTREAM
    Q_EXPORT QDataStream &operator<<( QDataStream &, const QPoint & );
    Q_EXPORT QDataStream &operator>>( QDataStream &, QPoint & );
    #endif

    /*****************************************************************************
      QPoint inline functions
     *****************************************************************************/

    inline QPoint::QPoint()
    { xp=0; yp=0; }

    inline QPoint::QPoint( int xpos, int ypos )
    { xp=(QCOORD)xpos; yp=(QCOORD)ypos; }

    inline bool QPoint::isNull() const
    { return xp == 0 && yp == 0; }

    inline int QPoint::x() const
    { return xp; }

    inline int QPoint::y() const
    { return yp; }

    inline void QPoint::setX( int x )
    { xp = (QCOORD)x; }

    inline void QPoint::setY( int y )
    { yp = (QCOORD)y; }

    inline QCOORD &QPoint::rx()
    { return xp; }

    inline QCOORD &QPoint::ry()
    { return yp; }

    inline QPoint &QPoint::operator+=( const QPoint &p )
    { xp+=p.xp; yp+=p.yp; return *this; }

    inline QPoint &QPoint::operator-=( const QPoint &p )
    { xp-=p.xp; yp-=p.yp; return *this; }

    inline QPoint &QPoint::operator*=( int c )
    { xp*=(QCOORD)c; yp*=(QCOORD)c; return *this; }

    inline QPoint &QPoint::operator*=( double c )
    { xp=(QCOORD)(xp*c); yp=(QCOORD)(yp*c); return *this; }

    inline bool operator==( const QPoint &p1, const QPoint &p2 )
    { return p1.xp == p2.xp && p1.yp == p2.yp; }

    inline bool operator!=( const QPoint &p1, const QPoint &p2 )
    { return p1.xp != p2.xp || p1.yp != p2.yp; }

    inline QPoint operator+( const QPoint &p1, const QPoint &p2 )
    { return QPoint(p1.xp+p2.xp, p1.yp+p2.yp); }

    inline QPoint operator-( const QPoint &p1, const QPoint &p2 )
    { return QPoint(p1.xp-p2.xp, p1.yp-p2.yp); }

    inline QPoint operator*( const QPoint &p, int c )
    { return QPoint(p.xp*c, p.yp*c); }

    inline QPoint operator*( int c, const QPoint &p )
    { return QPoint(p.xp*c, p.yp*c); }

    inline QPoint operator*( const QPoint &p, double c )
    { return QPoint((QCOORD)(p.xp*c), (QCOORD)(p.yp*c)); }

    inline QPoint operator*( double c, const QPoint &p )
    { return QPoint((QCOORD)(p.xp*c), (QCOORD)(p.yp*c)); }

    inline QPoint operator-( const QPoint &p )
    { return QPoint(-p.xp, -p.yp); }

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

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

    inline QPoint operator/( const QPoint &p, int c )
    {
    #if defined(CHECK_MATH)
        if ( c == 0 )
            QPoint::warningDivByZero();
    #endif
        return QPoint(p.xp/c, p.yp/c);
    }

    inline QPoint operator/( const QPoint &p, double c )
    {
    #if defined(CHECK_MATH)
        if ( c == 0.0 )
            QPoint::warningDivByZero();
    #endif
        return QPoint((QCOORD)(p.xp/c), (QCOORD)(p.yp/c));
    }

    #endif // QPOINT_H