qlegend.h - mozsearch

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

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

#ifndef QLEGEND_H

#define QLEGEND_H

#include <QtCharts/QChartGlobal>

#include <QtWidgets/QGraphicsWidget>

#include <QtGui/QPen>

#include <QtGui/QBrush>

QT_BEGIN_NAMESPACE

class QChart;

class QLegendPrivate;

class QLegendMarker;

class QAbstractSeries;

class Q_CHARTS_EXPORT QLegend : public QGraphicsWidget

    Q_OBJECT

    Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment)

    Q_PROPERTY(bool backgroundVisible READ isBackgroundVisible WRITE setBackgroundVisible NOTIFY backgroundVisibleChanged)

    Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged)

    Q_PROPERTY(QColor borderColor READ borderColor WRITE setBorderColor NOTIFY borderColorChanged)

    Q_PROPERTY(QFont font READ font WRITE setFont NOTIFY fontChanged)

    Q_PROPERTY(QColor labelColor READ labelColor WRITE setLabelColor NOTIFY labelColorChanged)

    Q_PROPERTY(bool reverseMarkers READ reverseMarkers WRITE setReverseMarkers NOTIFY reverseMarkersChanged)

    Q_PROPERTY(bool showToolTips READ showToolTips WRITE setShowToolTips NOTIFY showToolTipsChanged)

    Q_PROPERTY(MarkerShape markerShape READ markerShape WRITE setMarkerShape NOTIFY markerShapeChanged)

private:

    explicit QLegend(QChart *chart);

public:

    enum MarkerShape {

        MarkerShapeDefault,

        MarkerShapeRectangle,

        MarkerShapeCircle,

        MarkerShapeFromSeries,

        MarkerShapeRotatedRectangle,

        MarkerShapeTriangle,

        MarkerShapeStar,

        MarkerShapePentagon

};

    Q_ENUM(MarkerShape)

    ~QLegend();

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

    void setBrush(const QBrush &brush);

    QBrush brush() const;

    void setColor(QColor color);

    QColor color();

    void setPen(const QPen &pen);

    QPen pen() const;

    void setBorderColor(QColor color);

    QColor borderColor();

    void setFont(const QFont &font);

    QFont font() const;

    void setLabelBrush(const QBrush &brush);

    QBrush labelBrush() const;

    void setLabelColor(QColor color);

    QColor labelColor() const;

    void setAlignment(Qt::Alignment alignment);

    Qt::Alignment alignment() const;

    void detachFromChart();

    void attachToChart();

    bool isAttachedToChart();

    void setBackgroundVisible(bool visible = true);

    bool isBackgroundVisible() const;

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

    bool reverseMarkers();

    void setReverseMarkers(bool reverseMarkers = true);

    bool showToolTips() const;

    void setShowToolTips(bool show);

    bool isInteractive() const;

    void setInteractive(bool interactive);

    MarkerShape markerShape() const;

    void setMarkerShape(MarkerShape shape);

protected:

    void hideEvent(QHideEvent *event) override;

    void showEvent(QShowEvent *event) override;

Q_SIGNALS:

    void backgroundVisibleChanged(bool visible);

    void colorChanged(QColor color);

    void borderColorChanged(QColor color);

    void fontChanged(QFont font);

    void labelColorChanged(QColor color);

    void reverseMarkersChanged(bool reverseMarkers);

    void showToolTipsChanged(bool showToolTips);

    void markerShapeChanged(MarkerShape shape);

    Q_REVISION(6, 2) void attachedToChartChanged(bool attachedToChart);

    void interactiveChanged(bool interactive);

private:

    QScopedPointer<QLegendPrivate> d_ptr;

    Q_DISABLE_COPY(QLegend)

    friend class LegendScroller;

    friend class LegendLayout;

    friend class LegendMoveResizeHandler;

    friend class ChartLayout;

    friend class LegendMarkerItem;

    friend class QLegendMarkerPrivate;

};

QT_END_NAMESPACE

#endif // QLEGEND_H