legendmarkeritem_p.h

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// 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 LEGENDMARKERITEM_P_H

#define LEGENDMARKERITEM_P_H

#include <QtCharts/QChartGlobal>

#include <QtCharts/QLegend>

#include <QGraphicsObject>

#include <QtGui/QFont>

#include <QtGui/QBrush>

#include <QtGui/QPen>

#include <QtWidgets/QGraphicsTextItem>

#include <QtWidgets/QGraphicsLayoutItem>

#include <QtCharts/private/qchartglobal_p.h>

QT_BEGIN_NAMESPACE

class QLegendMarkerPrivate;

class Q_CHARTS_EXPORT LegendMarkerItem : public QGraphicsObject, public QGraphicsLayoutItem

    Q_OBJECT

    Q_INTERFACES(QGraphicsLayoutItem)

public:

    enum ItemType {

        TypeRect,

        TypeLine,

        TypeCircle,

        TypeRotatedRect,

        TypeTriangle,

        TypeStar,

        TypePentagon

};

    explicit LegendMarkerItem(QLegendMarkerPrivate *marker, QGraphicsObject *parent = nullptr);

    ~LegendMarkerItem();

    void setPen(const QPen &pen);

    QPen pen() const;

    void setBrush(const QBrush &brush);

    QBrush brush() const;

    void setSeriesPen(const QPen &pen);

    void setSeriesBrush(const QBrush &brush);

    void setSeriesLightMarker(const QImage &image);

    void setFont(const QFont &font);

    QFont font() const;

    void setLabel(const QString label);

    QString label() const;

    void setLabelBrush(const QBrush &brush);

    QBrush labelBrush() const;

    void setGeometry(const QRectF &rect) override;

    QRectF boundingRect() const override;

    QRectF markerRect() const;

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

    QSizeF sizeHint (Qt::SizeHint which, const QSizeF &constraint) const override;

    void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override;

    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;

    QString displayedLabel() const;

    void setToolTip(const QString &tooltip);

    QLegend::MarkerShape markerShape() const;

    void setMarkerShape(QLegend::MarkerShape shape);

    void updateMarkerShapeAndSize();

    QLegend::MarkerShape effectiveMarkerShape() const;

    qreal effectiveMarkerWidth() const;

    ItemType itemType() const { return m_itemType; }

Q_SIGNALS:

    void markerRectChanged();

protected:

    void setItemBrushAndPen();

    void setItemRect();

    bool useMaxWidth() const;

    QLegendMarkerPrivate *m_marker; // Knows

    QRectF m_defaultMarkerRect;

    QRectF m_markerRect;

    QRectF m_boundingRect;

    QGraphicsTextItem *m_textItem;

    QGraphicsItem *m_markerItem;

    qreal m_margin;

    qreal m_space;

    QString m_label;

    QLegend::MarkerShape m_markerShape;

    QImage m_seriesLightMarker;

    QBrush m_labelBrush;

    QPen m_pen;

    QBrush m_brush;

    QPen m_seriesPen;

    QBrush m_seriesBrush;

    QFont m_font;

    bool m_hovering;

    ItemType m_itemType;

    friend class QLegendMarker;

    friend class QLegendMarkerPrivate;

    friend class LegendLayout;

};

QT_END_NAMESPACE

#endif // LEGENDMARKERITEM_P_H