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 <qwidget.h>
#include "qwt_global.h"
#include "qwt_double_range.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 )
#ifndef Q_MOC_RUN // Qt3 moc
#define QWT_PROPERTY Q_PROPERTY
    Q_PROPERTY( Orientation orientation 
        READ orientation WRITE setOrientation )
#else // Qt4 moc
// MOC_SKIP_BEGIN
    Q_PROPERTY( Qt::Orientation orientation 
        READ orientation WRITE setOrientation )
// MOC_SKIP_END
#endif

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;

#if QT_VERSION >= 0x040000
    virtual void setOrientation(Qt::Orientation o);
    Qt::Orientation orientation() const;
#else
    virtual void setOrientation(Orientation o);
    Orientation orientation() const;
#endif

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

    virtual void setReadOnly(bool); 

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 &p,
                  int &scrollMode, int &direction) = 0;

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

    int scrollMode() const;

private:
    void buttonReleased();

    class PrivateData;
    PrivateData *d_data;
};

#endif