qwt_abstract_slider.h

/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
 * Qwt Widget Library
 * Copyright (C) 1997   Josef Wilgen
 * Copyright (C) 2002   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/

#ifndef QWT_ABSTRACT_SLIDER_H
#define QWT_ABSTRACT_SLIDER_H

#include "qwt_global.h"
#include "qwt_double_range.h"
#include <qwidget.h>

class QWT_EXPORT QwtAbstractSlider : public QWidget, public QwtDoubleRange
{
    Q_OBJECT
    Q_PROPERTY( bool readOnly READ isReadOnly WRITE setReadOnly )
    Q_PROPERTY( bool valid READ isValid WRITE setValid )
    Q_PROPERTY( double mass READ mass WRITE setMass )
    Q_PROPERTY( Qt::Orientation orientation
                READ orientation WRITE setOrientation )

public:
    enum ScrollMode
    {
        ScrNone,

        ScrMouse,

        ScrTimer,

        ScrDirect,

        ScrPage
    };

    explicit QwtAbstractSlider( Qt::Orientation, QWidget *parent = NULL );
    virtual ~QwtAbstractSlider();

    void setUpdateTime( int t );
    void stopMoving();
    void setTracking( bool enable );

    virtual void setMass( double val );
    virtual double mass() const;

    virtual void setOrientation( Qt::Orientation o );
    Qt::Orientation orientation() const;

    bool isReadOnly() const;

    /*
        Wrappers for QwtDblRange::isValid/QwtDblRange::setValid made
        to be available as Q_PROPERTY in the designer.
    */

    bool isValid() const
    {
        return QwtDoubleRange::isValid();
    }

    void setValid( bool valid )
    {
        QwtDoubleRange::setValid( valid );
    }

public Q_SLOTS:
    virtual void setValue( double val );
    virtual void fitValue( double val );
    virtual void incValue( int steps );

    virtual void setReadOnly( bool );

Q_SIGNALS:

    void valueChanged( double value );

    void sliderPressed();

    void sliderReleased();
    void sliderMoved( double value );

protected:
    virtual void setPosition( const QPoint & );
    virtual void valueChange();

    virtual void timerEvent( QTimerEvent *e );
    virtual void mousePressEvent( QMouseEvent *e );
    virtual void mouseReleaseEvent( QMouseEvent *e );
    virtual void mouseMoveEvent( QMouseEvent *e );
    virtual void keyPressEvent( QKeyEvent *e );
    virtual void wheelEvent( QWheelEvent *e );

    virtual double getValue( const QPoint & p ) = 0;

    virtual void getScrollMode( const QPoint &pos,
        ScrollMode &scrollMode, int &direction ) const = 0;

    void setMouseOffset( double );
    double mouseOffset() const;

    int scrollMode() const;

private:
    void buttonReleased();

    class PrivateData;
    PrivateData *d_data;
};

#endif