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2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the Qt Charts module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL$
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29
30// W A R N I N G
31// -------------
32//
33// This file is not part of the Qt Chart API. It exists purely as an
34// implementation detail. This header file may change from version to
35// version without notice, or even be removed.
36//
37// We mean it.
38
39#ifndef POLARCHARTAXIS_P_H
40#define POLARCHARTAXIS_P_H
41
42#include <private/chartaxiselement_p.h>
43#include <QtCharts/private/qchartglobal_p.h>
44
45QT_CHARTS_BEGIN_NAMESPACE
46
47class Q_CHARTS_PRIVATE_EXPORT PolarChartAxis : public ChartAxisElement
48{
49 Q_OBJECT
50 Q_INTERFACES(QGraphicsLayoutItem)
51public:
52 PolarChartAxis(QAbstractAxis *axis, QGraphicsItem *item, bool intervalAxis = false);
53 ~PolarChartAxis();
54
55 void setGeometry(const QRectF &axis, const QRectF &grid);
56 virtual qreal preferredAxisRadius(const QSizeF &maxSize) = 0;
57 int tickWidth() { return 3; }
58
59public: // from ChartAxisElement
60 QRectF gridGeometry() const;
61 bool isEmpty();
62
63protected:
64 void updateLayout(QVector<qreal> &layout);
65
66protected: // virtual functions
67 virtual void createItems(int count) = 0;
68 virtual void createAxisLabels(const QVector<qreal> &layout) = 0;
69 virtual void updateMinorTickItems() = 0;
70
71public Q_SLOTS:
72 virtual void handleShadesBrushChanged(const QBrush &brush);
73 virtual void handleShadesPenChanged(const QPen &pen);
74
75private:
76 void deleteItems(int count);
77};
78
79QT_CHARTS_END_NAMESPACE
80
81#endif // POLARCHARTAXIS_P_H
82

source code of qtcharts/src/charts/axis/polarchartaxis_p.h