source: trunk/examples/demo/qthumbwheel.h@ 168

/****************************************************************************
** $Id: qthumbwheel.h 160 2006-12-11 20:15:57Z dmik $
**
** Definition of QThumbWheel class
**
** Created : 010205
**
** 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 QTHUMBWHEEL_H
#define QTHUMBWHEEL_H

#ifndef QT_H
#include "qframe.h"
#include "qrangecontrol.h"
#endif // QT_H

#ifndef QT_NO_THUMBWHEEL

class QThumbWheel : public QFrame, public QRangeControl
{
    Q_OBJECT

public:
    QThumbWheel( QWidget *parent=0, const char *name=0 );
    ~QThumbWheel();

    virtual void        setOrientation( Orientation );
    Orientation         orientation() const;
    virtual void        setTracking( bool enable );
    bool                tracking() const;
    virtual void        setTransmissionRatio( double r );
    double              transmissionRatio() const;

public slots:
    virtual void setValue( int );

signals:
    void        valueChanged( int value );

protected:
    void        valueChange();
    void        rangeChange();
    void        stepChange();

    void        keyPressEvent( QKeyEvent * );
    void        mousePressEvent( QMouseEvent * );
    void        mouseReleaseEvent( QMouseEvent * );
    void        mouseMoveEvent( QMouseEvent * );
    void        wheelEvent( QWheelEvent * );
    void        focusInEvent( QFocusEvent *e );
    void        focusOutEvent( QFocusEvent *e );

    void        drawContents( QPainter * );

private:
    void        init();
    int         valueFromPosition( const QPoint & );


    double      rat;
    int         pressedAt;
    Orientation orient;
    uint        track : 1;
    uint        mousePressed : 1;

    class QThumbWheelPrivate;
    QThumbWheelPrivate *d;
};

inline QThumbWheel::Orientation QThumbWheel::orientation() const
{
    return orient;
}

inline bool QThumbWheel::tracking() const
{
    return (bool)track;
}

inline double QThumbWheel::transmissionRatio() const
{
    return rat;
}

#endif // QT_NO_WHEEL

#endif // QWHEEL_H