tictac.h

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/****************************************************************************
** tictac.h,v 1.1.10.1 2003/08/29 06:50:40 harlekin Exp
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#ifndef TICTAC_H
#define TICTAC_H


#include <qpushbutton.h>
#include <qvector.h>

class QComboBox;
class QLabel;


// --------------------------------------------------------------------------
// TicTacButton implements a single tic-tac-toe button
//

class TicTacButton : public QPushButton
{
    Q_OBJECT
public:
    TicTacButton( QWidget *parent );
    enum Type { Blank, Circle, Cross };
    Type        type() const            { return t; }
    void        setType( Type type )    { t = type; repaint(); }
    QSizePolicy sizePolicy() const
    { return QSizePolicy( QSizePolicy::Preferred, QSizePolicy::Preferred ); }
    QSize sizeHint() const { return QSize( 32, 32 ); }
    QSize minimumSizeHint() const { return QSize( 10, 10 ); }
protected:
    void        drawButtonLabel( QPainter * );
private:
    Type t;
};

// Using template vector to make vector-class of TicTacButton.
// This vector is used by the TicTacGameBoard class defined below.

typedef QVector<TicTacButton>   TicTacButtons;
typedef QArray<int>             TicTacArray;


// --------------------------------------------------------------------------
// TicTacGameBoard implements the tic-tac-toe game board.
// TicTacGameBoard is a composite widget that contains N x N TicTacButtons.
// N is specified in the constructor.
//

class TicTacGameBoard : public QWidget
{
    Q_OBJECT
public:
    TicTacGameBoard( int n, QWidget *parent=0, const char *name=0 );
   ~TicTacGameBoard();
    enum        State { Init, HumansTurn, HumanWon, ComputerWon, NobodyWon };
    State       state() const           { return st; }
    void        computerStarts( bool v );
    void        newGame();
signals:
    void        finished();                     // game finished
private slots:
    void        buttonClicked();
private:
    void        setState( State state ) { st = state; }
    void        updateButtons();
    int         checkBoard( TicTacArray * );
    void        computerMove();
    State       st;
    int         nBoard;
    bool        comp_starts;
    TicTacArray *btArray;
    TicTacButtons *buttons;
};


// --------------------------------------------------------------------------
// TicTacToe implements the complete game.
// TicTacToe is a composite widget that contains a TicTacGameBoard and
// two push buttons for starting the game and quitting.
//

class TicTacToe : public QWidget
{
    Q_OBJECT
public:
    TicTacToe( QWidget *parent=0, const char *name=0, WFlags fl = 0 );
    static QString appName() { return QString::fromLatin1("tictac"); }

private slots:
    void        newGameClicked();
    void        gameOver();
private:
    void        newState();
    QComboBox   *whoStarts;
    QPushButton *newGame;
    QPushButton *quit;
    QLabel      *message;
    TicTacGameBoard *board;
    int boardSize;
};


#endif // TICTAC_H

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