1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
****************************************************************************/
// W A R N I N G
// -------------
//
// This file is not part of the Qt Chart API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef PIESLICEITEM_H
#define PIESLICEITEM_H
#include <QtCharts/QChartGlobal>
#include <private/charttheme_p.h>
#include <QtCharts/QPieSeries>
#include <private/pieslicedata_p.h>
#include <QtCharts/private/qchartglobal_p.h>
#include <QtWidgets/QGraphicsItem>
#include <QtCore/QRectF>
#include <QtGui/QColor>
#include <QtGui/QPen>
#define PIESLICE_LABEL_GAP 5
QT_CHARTS_BEGIN_NAMESPACE
class PieChartItem;
class PieSliceLabel;
class QPieSlice;
class Q_CHARTS_PRIVATE_EXPORT PieSliceItem : public QGraphicsObject
{
Q_OBJECT
public:
PieSliceItem(QGraphicsItem *parent = 0);
~PieSliceItem();
// from QGraphicsItem
QRectF boundingRect() const;
QPainterPath shape() const;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
void mousePressEvent(QGraphicsSceneMouseEvent *event);
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
void setLayout(const PieSliceData &sliceData);
static QPointF sliceCenter(QPointF point, qreal radius, QPieSlice *slice);
Q_SIGNALS:
void clicked(Qt::MouseButtons buttons);
void hovered(bool state);
void pressed(Qt::MouseButtons buttons);
void released(Qt::MouseButtons buttons);
void doubleClicked(Qt::MouseButtons buttons);
private:
void updateGeometry();
QPainterPath slicePath(QPointF center, qreal radius, qreal startAngle, qreal angleSpan, qreal *centerAngle, QPointF *armStart);
QPainterPath labelArmPath(QPointF start, qreal angle, qreal length, qreal textWidth, QPointF *textStart);
private:
PieSliceData m_data;
QRectF m_boundingRect;
QPainterPath m_slicePath;
QPainterPath m_labelArmPath;
QRectF m_labelTextRect;
bool m_hovered;
QGraphicsTextItem *m_labelItem;
bool m_mousePressed;
friend class PieSliceAnimation;
};
QT_CHARTS_END_NAMESPACE
#endif // PIESLICEITEM_H
|
