qlegend_p.h - mozsearch

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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 QLEGEND_P_H

#define QLEGEND_P_H

#include <QtCharts/QLegend>

#include <QtCharts/private/qchartglobal_p.h>

#include <QtCore/qlist.h>

#include <QtCore/qhash.h>

QT_BEGIN_NAMESPACE

class QChart;

class ChartPresenter;

class QAbstractSeries;

class LegendLayout;

class LegendMoveResizeHandler;

class QLegendMarker;

class Q_CHARTS_EXPORT QLegendPrivate : public QObject

    Q_OBJECT

public:

    QLegendPrivate(ChartPresenter *presenter, QChart *chart, QLegend *q);

    ~QLegendPrivate();

    void setOffset(const QPointF &offset);

    QPointF offset() const;

    int roundness(qreal size);

    QGraphicsItemGroup* items() { return m_items; }

    QList<QLegendMarker*> markers(QAbstractSeries *series = 0);

    qreal maxMarkerWidth() const;

    static QObject *relatedObject(const QLegendMarker *l);

public Q_SLOTS:

    void handleSeriesAdded(QAbstractSeries *series);

    void handleSeriesRemoved(QAbstractSeries *series);

    void handleSeriesVisibleChanged();

    void handleCountChanged();

private:

    // Internal helpers

    void insertMarkerHelper(QLegendMarker *marker);

    void addMarkers(const QList<QLegendMarker *> &markers);

    void removeMarkerHelper(QLegendMarker *marker);

    void removeMarkers(const QList<QLegendMarker *> &markers);

    void decorateMarker(QLegendMarker *marker);

    void decorateMarkers(const QList<QLegendMarker *> &markers);

    void updateToolTips();

private:

    QLegend *q_ptr;

    ChartPresenter *m_presenter;

    LegendLayout *m_layout;

    LegendMoveResizeHandler *m_resizer;

    QChart *m_chart;

    QGraphicsItemGroup *m_items;

    Qt::Alignment m_alignment;

    QBrush m_brush;

    QPen m_pen;

    QFont m_font;

    QBrush m_labelBrush;

    qreal m_diameter;

    bool m_attachedToChart;

    bool m_backgroundVisible;

    bool m_reverseMarkers;

    bool m_showToolTips;

    bool m_interactive;

    QLegend::MarkerShape m_markerShape;

    QList<QLegendMarker *> m_markers;

    QList<QAbstractSeries *> m_series;

    QHash<QGraphicsItem *, QLegendMarker *> m_markerHash;

    friend class QLegend;

    friend class LegendMarkerItem;

    friend class LegendLayout;

    friend class QLegendMarkerPrivate;

    friend class LegendScroller;

    friend class LegendMoveResizeHandler;

};

QT_END_NAMESPACE

#endif