Newer
Older
/* -*- 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
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
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