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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**
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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 LINEARROWITEM_P_H
40#define LINEARROWITEM_P_H
41
42#include <private/chartaxiselement_p.h>
43#include <private/qabstractaxis_p.h>
44#include <QtWidgets/QGraphicsLineItem>
45#include <QtCharts/private/qchartglobal_p.h>
46
47QT_CHARTS_BEGIN_NAMESPACE
48
49class Q_CHARTS_PRIVATE_EXPORT LineArrowItem: public QGraphicsLineItem
50{
51public:
52 explicit LineArrowItem(ChartAxisElement *axis, QGraphicsItem *parent = 0)
53 : QGraphicsLineItem(parent),
54 m_axis(axis),
55 m_axisOrientation(axis->axis()->orientation())
56 {
57 }
58
59protected:
60 void mousePressEvent(QGraphicsSceneMouseEvent *event)
61 {
62 m_axis->axisSelected();
63 QGraphicsLineItem::mousePressEvent(event);
64 }
65
66 QRectF boundingRect() const
67 {
68 return shape().boundingRect();
69 }
70
71 QPainterPath shape() const
72 {
73 QPainterPath path = QGraphicsLineItem::shape();
74 QRectF rect = path.boundingRect();
75 path.addRect(rect: rect.adjusted(xp1: 0, yp1: 0, xp2: m_axisOrientation != Qt::Horizontal ? 8 : 0, yp2: m_axisOrientation != Qt::Vertical ? 8 : 0));
76 return path;
77 }
78
79private:
80 ChartAxisElement *m_axis;
81 Qt::Orientation m_axisOrientation;
82};
83
84QT_CHARTS_END_NAMESPACE
85
86#endif /* LINEARROWITEM_P_H */
87

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