1/****************************************************************************
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** $QT_BEGIN_LICENSE:GPL$
9** Commercial License Usage
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16**
17** GNU General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU
19** General Public License version 3 or (at your option) any later version
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21** the Free Software Foundation and appearing in the file LICENSE.GPL3
22** included in the packaging of this file. Please review the following
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28****************************************************************************/
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 BAR_H
40#define BAR_H
41
42#include <QtCharts/QChartGlobal>
43#include <QtCharts/private/qchartglobal_p.h>
44#include <QtWidgets/QGraphicsRectItem>
45#include <QtWidgets/QGraphicsTextItem>
46
47QT_CHARTS_BEGIN_NAMESPACE
48
49class QBarSet;
50
51// Single visual bar item of chart
52class Q_CHARTS_PRIVATE_EXPORT Bar : public QObject, public QGraphicsRectItem
53{
54 Q_OBJECT
55public:
56 Bar(QBarSet *barset, QGraphicsItem *parent = 0);
57 ~Bar();
58
59public:
60 void mousePressEvent(QGraphicsSceneMouseEvent *event);
61 void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
62 void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
63 void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
64 void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
65
66 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
67 void setVisualsDirty(bool dirty) { m_visualsDirty = dirty; }
68 bool visualsDirty() const { return m_visualsDirty; }
69 void setLabelDirty(bool dirty) { m_labelDirty = dirty; }
70 bool labelDirty() const { return m_labelDirty; }
71
72 void setLabelItem(QGraphicsTextItem *labelItem) { m_labelItem = labelItem; }
73 QGraphicsTextItem *labelItem() const { return m_labelItem; }
74
75 void setIndex(int index) { m_index = index; }
76 int index() const { return m_index; }
77 void setLayoutIndex(int index) { m_layoutIndex = index; }
78 int layoutIndex() const { return m_layoutIndex; }
79
80Q_SIGNALS:
81 void clicked(int index, QBarSet *barset);
82 void hovered(bool status, int index, QBarSet *barset);
83 void pressed(int index, QBarSet *barset);
84 void released(int index, QBarSet *barset);
85 void doubleClicked(int index, QBarSet *barset);
86
87private:
88 int m_index;
89 int m_layoutIndex;
90 QBarSet *m_barset;
91 QGraphicsTextItem *m_labelItem;
92 bool m_hovering;
93 bool m_mousePressed;
94 bool m_visualsDirty;
95 bool m_labelDirty;
96};
97
98QT_CHARTS_END_NAMESPACE
99
100#endif // BAR_H
101

source code of qtcharts/src/charts/barchart/bar_p.h