qpiemodelmapper_p.h

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// Copyright (C) 2024 The Qt Company Ltd.

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

// Qt-Security score:significant reason:default

//  W A R N I N G

//  -------------

//

// This file is not part of the QtGraphs 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 <QtGraphs/qpiemodelmapper.h>

#include <private/qobject_p.h>

QT_BEGIN_NAMESPACE

class QPieSlice;

class QPieSeries;

class QAbstractItemModel;

class QPieModelMapperPrivate : public QObjectPrivate

    Q_DECLARE_PUBLIC(QPieModelMapper)

public:

    explicit QPieModelMapperPrivate();

    ~QPieModelMapperPrivate() override;

    void onSliceLabelChanged(const QPieSlice *slice);

    void onSliceValueChanged(const QPieSlice *slice);

    QPieSlice *createSlice(QString label, double value);

    void connectSlice(QPieSlice *slice);

    void disconnectSlices();

    qsizetype mappedSliceCount() const;

public Q_SLOTS:

    // for the model

    void onModelUpdated(QModelIndex topLeft, QModelIndex bottomRight);

    void onModelRowsAdded(QModelIndex parent, qsizetype start, qsizetype end);

    void onModelRowsRemoved(QModelIndex parent, qsizetype start, qsizetype end);

    void onModelColumnsAdded(QModelIndex parent, qsizetype start, qsizetype end);

    void onModelColumnsRemoved(QModelIndex parent, qsizetype start, qsizetype end);

    void handleModelDestroyed();

    void onModelReset();

    // for the series

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

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

    void handleSeriesDestroyed();

    void initializePieFromModel();

    void syncSlices();

private:

    QPieSlice *pieSlice(QModelIndex index) const;

    bool isLabelIndex(QModelIndex index) const;

    bool isValueIndex(QModelIndex index) const;

    QModelIndex valueModelIndex(qsizetype sliceIndex);

    QModelIndex labelModelIndex(qsizetype sliceIndex);

    void insertData(qsizetype start, qsizetype end);

    void removeData(qsizetype start, qsizetype end);

    void blockModelSignals(bool block = true);

    void blockSeriesSignals(bool block = true);

private:

    QPieSeries *m_series = nullptr;

    QList<QPieSlice *> m_slices;

    QAbstractItemModel *m_model = nullptr;

    qsizetype m_first = 0;

    qsizetype m_count = -1;

    Qt::Orientation m_orientation = Qt::Vertical;

    qsizetype m_valuesSection = -1;

    qsizetype m_labelsSection = -1;

    bool m_seriesSignalsBlock = false;

    bool m_modelSignalsBlock = false;

    Q_DISABLE_COPY_MOVE(QPieModelMapperPrivate)

};

QT_END_NAMESPACE

#endif // QPIEMODELMAPPER_P_H