qwt_wheel.h
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/* -*- 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_WHEEL_H
#define QWT_WHEEL_H
#include "qwt_global.h"
#include "qwt_abstract_slider.h"
/*!
\brief The Wheel Widget
The wheel widget can be used to change values over a very large range
in very small steps. Using the setMass member, it can be configured
as a flywheel.
\sa The radio example.
*/
class QWT_EXPORT QwtWheel : public QwtAbstractSlider
{
Q_OBJECT
Q_PROPERTY( double totalAngle READ totalAngle WRITE setTotalAngle )
Q_PROPERTY( double viewAngle READ viewAngle WRITE setViewAngle )
Q_PROPERTY( int tickCnt READ tickCnt WRITE setTickCnt )
Q_PROPERTY( int wheelWidth READ wheelWidth WRITE setWheelWidth )
Q_PROPERTY( int borderWidth READ borderWidth WRITE setBorderWidth )
Q_PROPERTY( int wheelBorderWidth READ wheelBorderWidth WRITE setWheelBorderWidth )
Q_PROPERTY( double mass READ mass WRITE setMass )
public:
explicit QwtWheel( QWidget *parent = NULL );
virtual ~QwtWheel();
public Q_SLOTS:
void setTotalAngle ( double );
void setViewAngle( double );
public:
virtual void setOrientation( Qt::Orientation );
double totalAngle() const;
double viewAngle() const;
void setTickCnt( int );
int tickCnt() const;
void setMass( double );
double mass() const;
void setWheelWidth( int );
int wheelWidth() const;
void setWheelBorderWidth( int );
int wheelBorderWidth() const;
void setBorderWidth( int );
int borderWidth() const;
QRect wheelRect() const;
virtual QSize sizeHint() const;
virtual QSize minimumSizeHint() const;
protected:
virtual void paintEvent( QPaintEvent * );
virtual void resizeEvent( QResizeEvent * );
virtual void drawTicks( QPainter *, const QRectF & );
virtual void drawWheelBackground( QPainter *, const QRectF & );
virtual void valueChange();
virtual double getValue( const QPoint & );
virtual void getScrollMode( const QPoint &,
QwtAbstractSlider::ScrollMode &, int &direction ) const;
private:
class PrivateData;
PrivateData *d_data;
};
#endif