/******************************************************************************** Copyright (C) 2004-2006 Trolltech ASA. All rights reserved.**** This file is part of the example classes of the Qt Toolkit.**** This file may be used under the terms of the GNU General Public** License version 2.0 as published by the Free Software Foundation** and appearing in the file LICENSE.GPL included in the packaging of** this file.  Please review the following information to ensure GNU** General Public Licensing requirements will be met:** http://www.trolltech.com/products/qt/opensource.html**** If you are unsure which license is appropriate for your use, please** review the following information:** http://www.trolltech.com/products/qt/licensing.html or contact the** sales department at sales@trolltech.com.**** 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 TETRIXBOARD_H#define TETRIXBOARD_H#include <QBasicTimer>#include <QFrame>#include <QPointer>#include "tetrixpiece.h"class QLabel;class TetrixBoard : public QFrame{    Q_OBJECTpublic:    TetrixBoard(QWidget *parent = 0);    void setNextPieceLabel(QLabel *label);    QSize sizeHint() const;    QSize minimumSizeHint() const;public slots:    void start();    void pause();signals:    void scoreChanged(int score);    void levelChanged(int level);    void linesRemovedChanged(int numLines);protected:    void paintEvent(QPaintEvent *event);    void keyPressEvent(QKeyEvent *event);    void timerEvent(QTimerEvent *event);private:    enum { BoardWidth = 10, BoardHeight = 22 };    TetrixShape &shapeAt(int x, int y) { return board[(y * BoardWidth) + x]; }    int timeoutTime() { return 1000 / (1 + level); }    int squareWidth() { return contentsRect().width() / BoardWidth; }    int squareHeight() { return contentsRect().height() / BoardHeight; }    void clearBoard();    void dropDown();    void oneLineDown();    void pieceDropped(int dropHeight);    void removeFullLines();    void newPiece();    void showNextPiece();    bool tryMove(const TetrixPiece &newPiece, int newX, int newY);    void drawSquare(QPainter &painter, int x, int y, TetrixShape shape);    QBasicTimer timer;    QPointer<QLabel> nextPieceLabel;    bool isStarted;    bool isPaused;    bool isWaitingAfterLine;    TetrixPiece curPiece;    TetrixPiece nextPiece;    int curX;    int curY;    int numLinesRemoved;    int numPiecesDropped;    int score;    int level;    TetrixShape board[BoardWidth * BoardHeight];};#endif