scatterchartitem_p.h

Enable keyboard shortcuts

// Copyright (C) 2021 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

//  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>

#include <QtCore/qhash.h>

QT_BEGIN_NAMESPACE

class QScatterSeries;

class Q_CHARTS_EXPORT ScatterChartItem : public XYChart

    Q_OBJECT

    Q_INTERFACES(QGraphicsItem)

public:

    explicit ScatterChartItem(QScatterSeries *series, QGraphicsItem *item = 0);

public:

    //from QGraphicsItem

    QRectF boundingRect() const override;

    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;

    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 handleMarkerMouseReleaseEvent(QGraphicsItem *item);

    void setMousePressed(bool pressed = true) {m_mousePressed = pressed;}

    bool mousePressed() {return m_mousePressed;}

public Q_SLOTS:

    void handleSeriesUpdated() override;

private:

    void createPoints(int count);

    void deletePoints(int count);

    void resizeMarker(QGraphicsItem *marker, const int size);

protected:

    void updateGeometry() override;

    void mousePressEvent(QGraphicsSceneMouseEvent *event) override;

    void hoverMoveEvent(QGraphicsSceneHoverEvent *event) override;

    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;

    void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override;

private:

    QScatterSeries *m_series;

    QGraphicsItemGroup m_items;

    bool m_visible;

    int m_markerShape;

    QRectF m_rect;

    QHash<QGraphicsItem *, QPointF> m_markerMap;

    bool m_pointsVisible;

    bool m_pointLabelsVisible;

    qreal m_markerSize;

    QString m_pointLabelsFormat;

    QFont m_pointLabelsFont;

    QColor m_pointLabelsColor;

    bool m_pointLabelsClipping;

    QPointF m_lastHoveredPoint;

    QPointF m_lastMousePos;

    bool m_mousePressed;

};

template <class T>

class Q_CHARTS_EXPORT ChartMarker : public T

public:

    explicit ChartMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent);

    explicit ChartMarker(ScatterChartItem *parent);

protected:

    void mousePressEvent(QGraphicsSceneMouseEvent *event) override;

    void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override;

    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;

    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;

    void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override;

private:

    ScatterChartItem *m_parent;

};

class Q_CHARTS_EXPORT RotatedRectangleMarker : public ChartMarker<QGraphicsPolygonItem>

public:

    explicit RotatedRectangleMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent);

    static QPolygonF polygon(qreal x = 0.0, qreal y = 0.0, qreal w = 10.0, qreal h = 10.0);

};

class Q_CHARTS_EXPORT TriangleMarker : public ChartMarker<QGraphicsPolygonItem>

public:

    explicit TriangleMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent);

    static QPolygonF polygon(qreal x = 0.0, qreal y = 0.0, qreal w = 10.0, qreal h = 10.0);

};

class Q_CHARTS_EXPORT StarMarker : public ChartMarker<QGraphicsPolygonItem>

public:

    explicit StarMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent);

    static QPolygonF polygon(qreal x = 0.0, qreal y = 0.0, qreal w = 10.0, qreal h = 10.0);

};

class Q_CHARTS_EXPORT PentagonMarker : public ChartMarker<QGraphicsPolygonItem>

public:

    explicit PentagonMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent);

    static QPolygonF polygon(qreal x = 0.0, qreal y = 0.0, qreal w = 10.0, qreal h = 10.0);

};

QT_END_NAMESPACE

#endif // SCATTERPRESENTER_H