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/****************************************************************************
**
** 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 SCATTERCHARTITEM_H
#define SCATTERCHARTITEM_H
#include <QtCharts/QChartGlobal>
#include <private/xychart_p.h>
#include <QtWidgets/QGraphicsEllipseItem>
#include <QtGui/QPen>
#include <QtWidgets/QGraphicsSceneMouseEvent>
#include <QtCharts/private/qchartglobal_p.h>
QT_CHARTS_BEGIN_NAMESPACE
class QScatterSeries;
class Q_CHARTS_PRIVATE_EXPORT ScatterChartItem : public XYChart
{
Q_OBJECT
Q_INTERFACES(QGraphicsItem)
public:
explicit ScatterChartItem(QScatterSeries *series, QGraphicsItem *item = 0);
public:
//from QGraphicsItem
QRectF boundingRect() const;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
void setPen(const QPen &pen);
void setBrush(const QBrush &brush);
void markerSelected(QGraphicsItem *item);
void markerHovered(QGraphicsItem *item, bool state);
void markerPressed(QGraphicsItem *item);
void markerReleased(QGraphicsItem *item);
void markerDoubleClicked(QGraphicsItem *item);
void setMousePressed(bool pressed = true) {m_mousePressed = pressed;}
bool mousePressed() {return m_mousePressed;}
public Q_SLOTS:
void handleUpdated();
private:
void createPoints(int count);
void deletePoints(int count);
protected:
void updateGeometry();
private:
QScatterSeries *m_series;
QGraphicsItemGroup m_items;
bool m_visible;
int m_shape;
int m_size;
QRectF m_rect;
QMap<QGraphicsItem *, QPointF> m_markerMap;
bool m_pointLabelsVisible;
QString m_pointLabelsFormat;
QFont m_pointLabelsFont;
QColor m_pointLabelsColor;
bool m_pointLabelsClipping;
bool m_mousePressed;
};
class Q_CHARTS_PRIVATE_EXPORT CircleMarker: public QGraphicsEllipseItem
{
public:
CircleMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent)
: QGraphicsEllipseItem(x, y, w, h, parent),
m_parent(parent)
{
setAcceptHoverEvents(true);
setFlag(QGraphicsItem::ItemIsSelectable);
}
protected:
void mousePressEvent(QGraphicsSceneMouseEvent *event)
{
QGraphicsEllipseItem::mousePressEvent(event);
m_parent->markerPressed(this);
m_parent->setMousePressed();
}
void hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
QGraphicsEllipseItem::hoverEnterEvent(event);
m_parent->markerHovered(this, true);
}
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
QGraphicsEllipseItem::hoverLeaveEvent(event);
m_parent->markerHovered(this, false);
}
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
QGraphicsEllipseItem::mouseReleaseEvent(event);
m_parent->markerReleased(this);
if (m_parent->mousePressed())
m_parent->markerSelected(this);
m_parent->setMousePressed(false);
}
void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
{
QGraphicsEllipseItem::mouseDoubleClickEvent(event);
m_parent->markerDoubleClicked(this);
}
private:
ScatterChartItem *m_parent;
};
class Q_CHARTS_PRIVATE_EXPORT RectangleMarker: public QGraphicsRectItem
{
public:
RectangleMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent)
: QGraphicsRectItem(x, y, w, h, parent),
m_parent(parent)
{
setAcceptHoverEvents(true);
setFlag(QGraphicsItem::ItemIsSelectable);
}
protected:
void mousePressEvent(QGraphicsSceneMouseEvent *event)
{
QGraphicsRectItem::mousePressEvent(event);
m_parent->markerPressed(this);
m_parent->setMousePressed();
}
void hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
QGraphicsRectItem::hoverEnterEvent(event);
m_parent->markerHovered(this, true);
}
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
QGraphicsRectItem::hoverLeaveEvent(event);
m_parent->markerHovered(this, false);
}
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
QGraphicsRectItem::mouseReleaseEvent(event);
m_parent->markerReleased(this);
if (m_parent->mousePressed())
m_parent->markerSelected(this);
m_parent->setMousePressed(false);
}
void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
{
QGraphicsRectItem::mouseDoubleClickEvent(event);
m_parent->markerDoubleClicked(this);
}
private:
ScatterChartItem *m_parent;
};
QT_CHARTS_END_NAMESPACE
#endif // SCATTERPRESENTER_H
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