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# qrangecontrol.h

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

    /****************************************************************************
    ** $Id: qt/src/widgets/qrangecontrol.h   2.3.5   edited 2001-01-26 $
    **
    ** Definition of QRangeControl class
    **
    ** Created : 940427
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the widgets 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 QRANGECONTROL_H
    #define QRANGECONTROL_H

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

    #ifndef QT_NO_RANGECONTROL

    class QRangeControlPrivate;

    class Q_EXPORT QRangeControl
    {
    public:
        QRangeControl();
        QRangeControl( int minValue, int maxValue,
                       int lineStep, int pageStep, int value );

        int         value()         const;
        void        setValue( int );
        void        addPage();
        void        subtractPage();
        void        addLine();
        void        subtractLine();

        int         minValue()      const;
        int         maxValue()      const;
        void        setRange( int minValue, int maxValue );

        int         lineStep()      const;
        int         pageStep()      const;
        void        setSteps( int line, int page );

        int         bound( int ) const;

    protected:
        int         positionFromValue( int val, int space ) const;
        int         valueFromPosition( int pos, int space ) const;
        void        directSetValue( int val );
        int         prevValue()     const;

        virtual void valueChange();
        virtual void rangeChange();
        virtual void stepChange();

    private:
        int         minVal, maxVal;
        int         line, page;
        int         val, prevVal;

        QRangeControlPrivate * d;

    private:        // Disabled copy constructor and operator=
    #if defined(Q_DISABLE_COPY)
        QRangeControl( const QRangeControl & );
        QRangeControl &operator=( const QRangeControl & );
    #endif
    };

    inline int QRangeControl::value() const
    { return val; }

    inline int QRangeControl::prevValue() const
    { return prevVal; }

    inline int QRangeControl::minValue() const
    { return minVal; }

    inline int QRangeControl::maxValue() const
    { return maxVal; }

    inline int QRangeControl::lineStep() const
    { return line; }

    inline int QRangeControl::pageStep() const
    { return page; }

    #endif // QT_NO_RANGECONTROL

    #endif // QRANGECONTROL_H