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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef TETRIXBOARD_H
+#define TETRIXBOARD_H
+
+#include <QBasicTimer>
+#include <QFrame>
+#include <QPointer>
+
+#include "tetrixpiece.h"
+
+QT_BEGIN_NAMESPACE
+class QLabel;
+QT_END_NAMESPACE
+
+//! [0]
+class TetrixBoard : public QFrame
+{
+    Q_OBJECT
+
+public:
+    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);
+//! [0]
+
+//! [1]
+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];
+};
+//! [1]
+
+#endif