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# qrect.h

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

    /****************************************************************************
    ** $Id: qt/src/kernel/qrect.h   2.3.7   edited 2001-01-26 $
    **
    ** Definition of QRect 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 QRECT_H
    #define QRECT_H

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

    #if defined(topLeft)
    #error "Macro definition of topLeft conflicts with QRect"
    // don't just silently undo people's defines: #undef topLeft
    #endif

    class Q_EXPORT QRect                                    // rectangle class
    {
    public:
        QRect()     { x1 = y1 = 0; x2 = y2 = -1; }
        QRect( const QPoint &topleft, const QPoint &bottomright );
        QRect( const QPoint &topleft, const QSize &size );
        QRect( int left, int top, int width, int height );

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

        int    left()       const;
        int    top()        const;
        int    right()      const;
        int    bottom()     const;

        QCOORD &rLeft();
        QCOORD &rTop();
        QCOORD &rRight();
        QCOORD &rBottom();

        int    x()          const;
        int    y()          const;
        void   setLeft( int pos );
        void   setTop( int pos );
        void   setRight( int pos );
        void   setBottom( int pos );
        void   setX( int x );
        void   setY( int y );

        QPoint topLeft()     const;
        QPoint bottomRight() const;
        QPoint topRight()    const;
        QPoint bottomLeft()  const;
        QPoint center()      const;

        void   rect( int *x, int *y, int *w, int *h ) const;
        void   coords( int *x1, int *y1, int *x2, int *y2 ) const;

        void   moveTopLeft( const QPoint &p );
        void   moveBottomRight( const QPoint &p );
        void   moveTopRight( const QPoint &p );
        void   moveBottomLeft( const QPoint &p );
        void   moveCenter( const QPoint &p );
        void   moveBy( int dx, int dy );

        void   setRect( int x, int y, int w, int h );
        void   setCoords( int x1, int y1, int x2, int y2 );

        QSize  size()       const;
        int    width()      const;
        int    height()     const;
        void   setWidth( int w );
        void   setHeight( int h );
        void   setSize( const QSize &s );

        QRect  operator|(const QRect &r) const;
        QRect  operator&(const QRect &r) const;
        QRect&  operator|=(const QRect &r);
        QRect&  operator&=(const QRect &r);

        bool   contains( const QPoint &p, bool proper=FALSE ) const;
        bool   contains( int x, int y, bool proper=FALSE ) const;
        bool   contains( const QRect &r, bool proper=FALSE ) const;
        QRect  unite( const QRect &r ) const;
        QRect  intersect( const QRect &r ) const;
        bool   intersects( const QRect &r ) const;

        friend Q_EXPORT bool operator==( const QRect &, const QRect & );
        friend Q_EXPORT bool operator!=( const QRect &, const QRect & );

    private:
    #if defined(_OS_MAC_)
        QCOORD y1;
        QCOORD x1;
        QCOORD y2;
        QCOORD x2;
    #else
        QCOORD x1;
        QCOORD y1;
        QCOORD x2;
        QCOORD y2;
    #endif
    };

    Q_EXPORT bool operator==( const QRect &, const QRect & );
    Q_EXPORT bool operator!=( const QRect &, const QRect & );

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

    /*****************************************************************************
      QRect inline member functions
     *****************************************************************************/

    inline QRect::QRect( int left, int top, int width, int height )
    {
        x1 = (QCOORD)left;
        y1 = (QCOORD)top;
        x2 = (QCOORD)(left+width-1);
        y2 = (QCOORD)(top+height-1);
    }

    inline bool QRect::isNull() const
    { return x2 == x1-1 && y2 == y1-1; }

    inline bool QRect::isEmpty() const
    { return x1 > x2 || y1 > y2; }

    inline bool QRect::isValid() const
    { return x1 <= x2 && y1 <= y2; }

    inline int QRect::left() const
    { return x1; }

    inline int QRect::top() const
    { return y1; }

    inline int QRect::right() const
    { return x2; }

    inline int QRect::bottom() const
    { return y2; }

    inline QCOORD &QRect::rLeft()
    { return x1; }

    inline QCOORD & QRect::rTop()
    { return y1; }

    inline QCOORD & QRect::rRight()
    { return x2; }

    inline QCOORD & QRect::rBottom()
    { return y2; }

    inline int QRect::x() const
    { return x1; }

    inline int QRect::y() const
    { return y1; }

    inline void QRect::setLeft( int pos )
    { x1 = (QCOORD)pos; }

    inline void QRect::setTop( int pos )
    { y1 = (QCOORD)pos; }

    inline void QRect::setRight( int pos )
    { x2 = (QCOORD)pos; }

    inline void QRect::setBottom( int pos )
    { y2 = (QCOORD)pos; }

    inline void QRect::setX( int x )
    { x1 = (QCOORD)x; }

    inline void QRect::setY( int y )
    { y1 = (QCOORD)y; }

    inline QPoint QRect::topLeft() const
    { return QPoint(x1, y1); }

    inline QPoint QRect::bottomRight() const
    { return QPoint(x2, y2); }

    inline QPoint QRect::topRight() const
    { return QPoint(x2, y1); }

    inline QPoint QRect::bottomLeft() const
    { return QPoint(x1, y2); }

    inline QPoint QRect::center() const
    { return QPoint((x1+x2)/2, (y1+y2)/2); }

    inline int QRect::width() const
    { return  x2 - x1 + 1; }

    inline int QRect::height() const
    { return  y2 - y1 + 1; }

    inline QSize QRect::size() const
    { return QSize(x2-x1+1, y2-y1+1); }

    inline bool QRect::contains( int x, int y, bool proper ) const
    {
        if ( proper )
            return x > x1 && x < x2 &&
                   y > y1 && y < y2;
        else
            return x >= x1 && x <= x2 &&
                   y >= y1 && y <= y2;
    }

    #endif // QRECT_H