qrangecontrol.h

/****************************************************************************
** $Id: //depot/qt/main/src/widgets/qrangecontrol.h#27 $
**
** 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.
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**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
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**********************************************************************/

#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