gameoflifemodel.h - mozsearch

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// Copyright (C) 2018 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

#ifndef GAMEOFLIFEMODEL_H

#define GAMEOFLIFEMODEL_H

#include <array>

#include <QAbstractTableModel>

#include <QPoint>

#include <QtQml/qqml.h>

//! [modelclass]

class GameOfLifeModel : public QAbstractTableModel

    Q_OBJECT

    QML_ELEMENT

public:

    enum Roles {

        CellRole

};

    Q_ENUM(Roles)

    QHash<int, QByteArray> roleNames() const override {

        return {

            { CellRole, "value" }

};

    explicit GameOfLifeModel(QObject *parent = nullptr);

    int rowCount(const QModelIndex &parent = QModelIndex()) const override;

    int columnCount(const QModelIndex &parent = QModelIndex()) const override;

    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;

    bool setData(const QModelIndex &index, const QVariant &value,

                 int role = Qt::EditRole) override;

    Qt::ItemFlags flags(const QModelIndex &index) const override;

    Q_INVOKABLE void nextStep();

    Q_INVOKABLE bool loadFile(const QString &fileName);

    Q_INVOKABLE void loadPattern(const QString &plainText);

    Q_INVOKABLE void clear();

private:

    static constexpr int width = 256;

    static constexpr int height = 256;

    static constexpr int size = width * height;

    using StateContainer = std::array<bool, size>;

    StateContainer m_currentState;

    int cellNeighborsCount(const QPoint &cellCoordinates) const;

    static bool areCellCoordinatesValid(const QPoint &coordinates);

    static QPoint cellCoordinatesFromIndex(int cellIndex);

    static std::size_t cellIndex(const QPoint &coordinates);

};

//! [modelclass]

#endif // GAMEOFLIFEMODEL_H