source: ntrip/trunk/BNC/qwt/qwt_round_scale_draw.h@ 6429

Last change on this file since 6429 was 4271, checked in by mervart, 12 years ago
File size: 2.0 KB
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1/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10#ifndef QWT_ROUND_SCALE_DRAW_H
11#define QWT_ROUND_SCALE_DRAW_H
12
13#include "qwt_global.h"
14#include "qwt_abstract_scale_draw.h"
15#include <qpoint.h>
16
17class QPen;
18
19/*!
20 \brief A class for drawing round scales
21
22 QwtRoundScaleDraw can be used to draw round scales.
23 The circle segment can be adjusted by QwtRoundScaleDraw::setAngleRange().
24 The geometry of the scale can be specified with
25 QwtRoundScaleDraw::moveCenter() and QwtRoundScaleDraw::setRadius().
26
27 After a scale division has been specified as a QwtScaleDiv object
28 using QwtAbstractScaleDraw::setScaleDiv(const QwtScaleDiv &s),
29 the scale can be drawn with the QwtAbstractScaleDraw::draw() member.
30*/
31
32class QWT_EXPORT QwtRoundScaleDraw: public QwtAbstractScaleDraw
33{
34public:
35 QwtRoundScaleDraw();
36 virtual ~QwtRoundScaleDraw();
37
38 void setRadius( int radius );
39 int radius() const;
40
41 void moveCenter( double x, double y );
42 void moveCenter( const QPointF & );
43 QPointF center() const;
44
45 void setAngleRange( double angle1, double angle2 );
46
47 virtual double extent( const QFont & ) const;
48
49protected:
50 virtual void drawTick( QPainter *p, double val, double len ) const;
51 virtual void drawBackbone( QPainter *p ) const;
52 virtual void drawLabel( QPainter *p, double val ) const;
53
54private:
55 QwtRoundScaleDraw( const QwtRoundScaleDraw & );
56 QwtRoundScaleDraw &operator=( const QwtRoundScaleDraw &other );
57
58 class PrivateData;
59 PrivateData *d_data;
60};
61
62//! Move the center of the scale draw, leaving the radius unchanged
63inline void QwtRoundScaleDraw::moveCenter( double x, double y )
64{
65 moveCenter( QPointF( x, y ) );
66}
67
68#endif
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