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3** Copyright (C) 2016 The Qt Company Ltd.
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6** This file is part of the Qt Charts module of the Qt Toolkit.
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29
30#ifndef VIEW_H
31#define VIEW_H
32#include <QtWidgets/QGraphicsView>
33#include <QtCharts/QChartGlobal>
34
35QT_BEGIN_NAMESPACE
36class QGraphicsScene;
37class QMouseEvent;
38class QResizeEvent;
39QT_END_NAMESPACE
40
41QT_CHARTS_BEGIN_NAMESPACE
42class QChart;
43QT_CHARTS_END_NAMESPACE
44
45class Callout;
46
47QT_CHARTS_USE_NAMESPACE
48
49class View: public QGraphicsView
50{
51 Q_OBJECT
52
53public:
54 View(QWidget *parent = 0);
55
56protected:
57 void resizeEvent(QResizeEvent *event);
58 void mouseMoveEvent(QMouseEvent *event);
59
60public slots:
61 void keepCallout();
62 void tooltip(QPointF point, bool state);
63
64private:
65 QGraphicsSimpleTextItem *m_coordX;
66 QGraphicsSimpleTextItem *m_coordY;
67 QChart *m_chart;
68 Callout *m_tooltip;
69 QList<Callout *> m_callouts;
70};
71
72#endif
73

source code of qtcharts/examples/charts/callout/view.h