QWT API (中文) 7.3.0
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qwt_polar_marker.h
1/******************************************************************************
2 * QwtPolar Widget Library
3 * Copyright (C) 2008 Uwe Rathmann
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the Qwt License, Version 1.0
7 *****************************************************************************/
8
9#ifndef QWT_POLAR_MARKER_H
10#define QWT_POLAR_MARKER_H
11
12#include "qwt_global.h"
13#include "qwt_polar_item.h"
14#include "qwt_point_polar.h"
15
16class QRect;
17class QwtText;
18class QwtSymbol;
19
35class QWT_EXPORT QwtPolarMarker : public QwtPolarItem
36{
37public:
39 explicit QwtPolarMarker();
41 ~QwtPolarMarker() override;
42
44 virtual int rtti() const override;
45
47 void setPosition(const QwtPointPolar&);
49 QwtPointPolar position() const;
50
52 void setSymbol(const QwtSymbol* s);
54 const QwtSymbol* symbol() const;
55
57 void setLabel(const QwtText&);
59 QwtText label() const;
60
62 void setLabelAlignment(Qt::Alignment);
64 Qt::Alignment labelAlignment() const;
65
67 virtual void draw(QPainter* painter,
68 const QwtScaleMap& azimuthMap,
69 const QwtScaleMap& radialMap,
70 const QPointF& pole,
71 double radius,
72 const QRectF& canvasRect) const override;
73
75 virtual QwtInterval boundingInterval(int scaleId) const override;
76
77private:
78 QWT_DECLARE_PRIVATE(QwtPolarMarker)
79};
80
81#endif
A class representing an interval
Definition qwt_interval.h:39
A point in polar coordinates
Definition qwt_point_polar.h:45
Base class for items on a polar plot
Definition qwt_polar_item.h:35
virtual void draw(QPainter *painter, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, double radius, const QRectF &canvasRect) const =0
Draw the item
virtual QwtInterval boundingInterval(int scaleId) const
Get the bounding interval for a scale
Definition qwt_polar_item.cpp:373
virtual int rtti() const
Get the runtime type information
Definition qwt_polar_item.cpp:103
A class for drawing markers
Definition qwt_polar_marker.h:36
~QwtPolarMarker() override
Destructor
A scale map
Definition qwt_scale_map.h:44
A class for drawing symbols
Definition qwt_symbol.h:51
A class representing a text
Definition qwt_text.h:70