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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_ROUND_SCALE_DRAW_H
#define QWT_ROUND_SCALE_DRAW_H
#include <qpoint.h>
#include "qwt_global.h"
#include "qwt_abstract_scale_draw.h"
class QPen;
/*!
\brief A class for drawing round scales
QwtRoundScaleDraw can be used to draw round scales.
The circle segment can be adjusted by QwtRoundScaleDraw::setAngleRange().
The geometry of the scale can be specified with
QwtRoundScaleDraw::moveCenter() and QwtRoundScaleDraw::setRadius().
After a scale division has been specified as a QwtScaleDiv object
using QwtAbstractScaleDraw::setScaleDiv(const QwtScaleDiv &s),
the scale can be drawn with the QwtAbstractScaleDraw::draw() member.
*/
class QWT_EXPORT QwtRoundScaleDraw: public QwtAbstractScaleDraw
{
public:
QwtRoundScaleDraw();
QwtRoundScaleDraw(const QwtRoundScaleDraw &);
virtual ~QwtRoundScaleDraw();
QwtRoundScaleDraw &operator=(const QwtRoundScaleDraw &other);
void setRadius(int radius);
int radius() const;
void moveCenter(int x, int y);
void moveCenter(const QPoint &);
QPoint center() const;
void setAngleRange(double angle1, double angle2);
virtual int extent(const QPen &, const QFont &) const;
protected:
virtual void drawTick(QPainter *p, double val, int len) const;
virtual void drawBackbone(QPainter *p) const;
virtual void drawLabel(QPainter *p, double val) const;
private:
class PrivateData;
PrivateData *d_data;
};
inline void QwtRoundScaleDraw::moveCenter(int x, int y)
{
moveCenter(QPoint(x, y));
}
#endif