qpiemodelmapper_p.h

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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 QPIEMODELMAPPER_P_H

#define QPIEMODELMAPPER_P_H

#include <QtCore/QObject>

#include <QtCharts/QPieModelMapper>

#include <QtCharts/private/qchartglobal_p.h>

QT_BEGIN_NAMESPACE

class QModelIndex;

QT_END_NAMESPACE

QT_BEGIN_NAMESPACE

class QPieSlice;

class Q_CHARTS_EXPORT QPieModelMapperPrivate : public QObject

    Q_OBJECT

public:

    explicit QPieModelMapperPrivate(QPieModelMapper *q);

public Q_SLOTS:

    // for the model

    void modelUpdated(QModelIndex topLeft, QModelIndex bottomRight);

    void modelRowsAdded(QModelIndex parent, int start, int end);

    void modelRowsRemoved(QModelIndex parent, int start, int end);

    void modelColumnsAdded(QModelIndex parent, int start, int end);

    void modelColumnsRemoved(QModelIndex parent, int start, int end);

    void handleModelDestroyed();

    // for the series

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

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

    void sliceLabelChanged();

    void sliceValueChanged();

    void handleSeriesDestroyed();

    void initializePieFromModel();

private:

    QPieSlice *pieSlice(QModelIndex index) const;

    bool isLabelIndex(QModelIndex index) const;

    bool isValueIndex(QModelIndex index) const;

    QModelIndex valueModelIndex(int slicePos);

    QModelIndex labelModelIndex(int slicePos);

    void insertData(int start, int end);

    void removeData(int start, int end);

    void blockModelSignals(bool block = true);

    void blockSeriesSignals(bool block = true);

private:

    QPieSeries *m_series;

    QList<QPieSlice *> m_slices;

    QAbstractItemModel *m_model;

    int m_first;

    int m_count;

    Qt::Orientation m_orientation;

    int m_valuesSection;

    int m_labelsSection;

    bool m_seriesSignalsBlock;

    bool m_modelSignalsBlock;

private:

    QPieModelMapper *q_ptr;

    Q_DECLARE_PUBLIC(QPieModelMapper)

};

QT_END_NAMESPACE

#endif // QPIEMODELMAPPER_P_H