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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 SCATTERCHARTITEM_H
40#define SCATTERCHARTITEM_H
41
42#include <QtCharts/QChartGlobal>
43#include <private/xychart_p.h>
44#include <QtWidgets/QGraphicsEllipseItem>
45#include <QtGui/QPen>
46#include <QtWidgets/QGraphicsSceneMouseEvent>
47#include <QtCharts/private/qchartglobal_p.h>
48
49QT_CHARTS_BEGIN_NAMESPACE
50
51class QScatterSeries;
52
53class Q_CHARTS_PRIVATE_EXPORT ScatterChartItem : public XYChart
54{
55 Q_OBJECT
56 Q_INTERFACES(QGraphicsItem)
57public:
58 explicit ScatterChartItem(QScatterSeries *series, QGraphicsItem *item = 0);
59
60public:
61 //from QGraphicsItem
62 QRectF boundingRect() const;
63 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
64
65 void setPen(const QPen &pen);
66 void setBrush(const QBrush &brush);
67
68 void markerSelected(QGraphicsItem *item);
69 void markerHovered(QGraphicsItem *item, bool state);
70 void markerPressed(QGraphicsItem *item);
71 void markerReleased(QGraphicsItem *item);
72 void markerDoubleClicked(QGraphicsItem *item);
73
74 void setMousePressed(bool pressed = true) {m_mousePressed = pressed;}
75 bool mousePressed() {return m_mousePressed;}
76
77
78public Q_SLOTS:
79 void handleUpdated();
80
81private:
82 void createPoints(int count);
83 void deletePoints(int count);
84
85protected:
86 void updateGeometry();
87
88private:
89 QScatterSeries *m_series;
90 QGraphicsItemGroup m_items;
91 bool m_visible;
92 int m_shape;
93 int m_size;
94 QRectF m_rect;
95 QMap<QGraphicsItem *, QPointF> m_markerMap;
96
97 bool m_pointLabelsVisible;
98 QString m_pointLabelsFormat;
99 QFont m_pointLabelsFont;
100 QColor m_pointLabelsColor;
101 bool m_pointLabelsClipping;
102
103 bool m_mousePressed;
104};
105
106class Q_CHARTS_PRIVATE_EXPORT CircleMarker: public QGraphicsEllipseItem
107{
108
109public:
110 CircleMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent)
111 : QGraphicsEllipseItem(x, y, w, h, parent),
112 m_parent(parent)
113 {
114 setAcceptHoverEvents(true);
115 setFlag(flag: QGraphicsItem::ItemIsSelectable);
116 }
117
118protected:
119 void mousePressEvent(QGraphicsSceneMouseEvent *event)
120 {
121 QGraphicsEllipseItem::mousePressEvent(event);
122 m_parent->markerPressed(item: this);
123 m_parent->setMousePressed();
124 }
125 void hoverEnterEvent(QGraphicsSceneHoverEvent *event)
126 {
127 QGraphicsEllipseItem::hoverEnterEvent(event);
128 m_parent->markerHovered(item: this, state: true);
129 }
130 void hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
131 {
132 QGraphicsEllipseItem::hoverLeaveEvent(event);
133 m_parent->markerHovered(item: this, state: false);
134 }
135 void mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
136 {
137 QGraphicsEllipseItem::mouseReleaseEvent(event);
138 m_parent->markerReleased(item: this);
139 if (m_parent->mousePressed())
140 m_parent->markerSelected(item: this);
141 m_parent->setMousePressed(false);
142 }
143 void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
144 {
145 QGraphicsEllipseItem::mouseDoubleClickEvent(event);
146 m_parent->markerDoubleClicked(item: this);
147 }
148
149private:
150 ScatterChartItem *m_parent;
151};
152
153class Q_CHARTS_PRIVATE_EXPORT RectangleMarker: public QGraphicsRectItem
154{
155
156public:
157 RectangleMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent)
158 : QGraphicsRectItem(x, y, w, h, parent),
159 m_parent(parent)
160 {
161 setAcceptHoverEvents(true);
162 setFlag(flag: QGraphicsItem::ItemIsSelectable);
163 }
164
165protected:
166 void mousePressEvent(QGraphicsSceneMouseEvent *event)
167 {
168 QGraphicsRectItem::mousePressEvent(event);
169 m_parent->markerPressed(item: this);
170 m_parent->setMousePressed();
171 }
172 void hoverEnterEvent(QGraphicsSceneHoverEvent *event)
173 {
174 QGraphicsRectItem::hoverEnterEvent(event);
175 m_parent->markerHovered(item: this, state: true);
176 }
177 void hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
178 {
179 QGraphicsRectItem::hoverLeaveEvent(event);
180 m_parent->markerHovered(item: this, state: false);
181 }
182 void mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
183 {
184 QGraphicsRectItem::mouseReleaseEvent(event);
185 m_parent->markerReleased(item: this);
186 if (m_parent->mousePressed())
187 m_parent->markerSelected(item: this);
188 m_parent->setMousePressed(false);
189 }
190 void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
191 {
192 QGraphicsRectItem::mouseDoubleClickEvent(event);
193 m_parent->markerDoubleClicked(item: this);
194 }
195
196private:
197 ScatterChartItem *m_parent;
198};
199
200QT_CHARTS_END_NAMESPACE
201
202#endif // SCATTERPRESENTER_H
203

source code of qtcharts/src/charts/scatterchart/scatterchartitem_p.h