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50
51#ifndef GAMEOFLIFEMODEL_H
52#define GAMEOFLIFEMODEL_H
53
54#include <array>
55#include <QAbstractTableModel>
56#include <QPoint>
57#include <QtQml/qqml.h>
58
59//! [modelclass]
60class GameOfLifeModel : public QAbstractTableModel
61{
62 Q_OBJECT
63 QML_ELEMENT
64
65 Q_ENUMS(Roles)
66public:
67 enum Roles {
68 CellRole
69 };
70
71 QHash<int, QByteArray> roleNames() const override {
72 return {
73 { CellRole, "value" }
74 };
75 }
76
77 explicit GameOfLifeModel(QObject *parent = nullptr);
78
79 int rowCount(const QModelIndex &parent = QModelIndex()) const override;
80 int columnCount(const QModelIndex &parent = QModelIndex()) const override;
81
82 QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
83 bool setData(const QModelIndex &index, const QVariant &value,
84 int role = Qt::EditRole) override;
85
86 Qt::ItemFlags flags(const QModelIndex &index) const override;
87
88 Q_INVOKABLE void nextStep();
89 Q_INVOKABLE bool loadFile(const QString &fileName);
90 Q_INVOKABLE void loadPattern(const QString &plainText);
91 Q_INVOKABLE void clear();
92
93private:
94 static constexpr int width = 256;
95 static constexpr int height = 256;
96 static constexpr int size = width * height;
97
98 using StateContainer = std::array<bool, size>;
99 StateContainer m_currentState;
100
101 int cellNeighborsCount(const QPoint &cellCoordinates) const;
102 static bool areCellCoordinatesValid(const QPoint &coordinates);
103 static QPoint cellCoordinatesFromIndex(int cellIndex);
104 static std::size_t cellIndex(const QPoint &coordinates);
105};
106//! [modelclass]
107
108#endif // GAMEOFLIFEMODEL_H
109

source code of qtdeclarative/examples/quick/tableview/gameoflife/gameoflifemodel.h