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# tictactoe.h Example File
designer/taskmenuextension/tictactoe.h

        /****************************************************************************
        **
        ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
        **
        ** This file is part of the example classes of the Qt Toolkit.
        **
        ** Licensees holding valid Qt Preview licenses may use this file in
        ** accordance with the Qt Preview License Agreement provided with the
        ** Software.
        **
        ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
        ** information about Qt Commercial License Agreements.
        **
        ** Contact info@trolltech.com if any conditions of this licensing are
        ** not clear to you.
        **
        ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
        ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        **
        ****************************************************************************/

        #ifndef TICTACTOE_H
        #define TICTACTOE_H

        #include <QWidget>

        class QRect;
        class QSize;

        class TicTacToe : public QWidget
        {
            Q_OBJECT
            Q_PROPERTY(QString state READ state WRITE setState)

        public:
            TicTacToe(QWidget *parent = 0);

            QSize minimumSizeHint() const;
            QSize sizeHint() const;
            void setState(const QString &newState);
            QString state() const;
            void clearBoard();

        protected:
            void mousePressEvent(QMouseEvent *event);
            void paintEvent(QPaintEvent *event);

        private:
            enum { Empty = '-', Cross = 'X', Nought = 'O' };

            QRect cellRect(int row, int col) const;
            int cellWidth() const { return width() / 3; }
            int cellHeight() const { return height() / 3; }

            QString myState;
            int turnNumber;
        };

        #endif