piechartitem_p.h - mozsearch

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// Copyright (C) 2016 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 PIECHARTITEM_H

#define PIECHARTITEM_H

#include <QtCharts/QPieSeries>

#include <private/chartitem_p.h>

#include <private/piesliceitem_p.h>

#include <QtCore/QPointer>

#include <QtCharts/private/qchartglobal_p.h>

QT_BEGIN_NAMESPACE

class QGraphicsItem;

QT_END_NAMESPACE

QT_BEGIN_NAMESPACE

class QPieSlice;

class ChartPresenter;

class PieAnimation;

class Q_CHARTS_EXPORT PieChartItem : public ChartItem

    Q_OBJECT

public:

    explicit PieChartItem(QPieSeries *series, QGraphicsItem* item = 0);

    ~PieChartItem();

    // from QGraphicsItem

    QRectF boundingRect() const override { return m_rect; }

    void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *) override {}

    ChartAnimation *animation() const override;

protected:

    void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override;

    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;

    void mousePressEvent(QGraphicsSceneMouseEvent *event) override;

    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;

    void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override;

public Q_SLOTS:

    // from Chart

    void handleDomainUpdated() override;

    void updateLayout();

    void handleSlicesAdded(const QList<QPieSlice *> &slices);

    void handleSlicesRemoved(const QList<QPieSlice *> &slices);

    void handleSliceChanged();

    void handleSeriesVisibleChanged();

    void handleOpacityChanged();

    void setAnimation(PieAnimation *animation);

    // From ChartItem

    void cleanup() override;

private:

    PieSliceData updateSliceGeometry(QPieSlice *slice);

private:

    QHash<QPieSlice *, PieSliceItem *> m_sliceItems;

    QPointer<QPieSeries> m_series;

    QRectF m_rect;

    QPointF m_pieCenter;

    qreal m_pieRadius;

    qreal m_holeSize;

    PieAnimation *m_animation;

};

QT_END_NAMESPACE

#endif // PIECHARTITEM_H