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diff --git a/examples/widgets/tetrix/tetrixpiece.cpp b/examples/widgets/tetrix/tetrixpiece.cpp
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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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore>
+
+#include <stdlib.h>
+
+#include "tetrixpiece.h"
+
+//! [0]
+void TetrixPiece::setRandomShape()
+{
+    setShape(TetrixShape(qrand() % 7 + 1));
+}
+//! [0]
+
+//! [1]
+void TetrixPiece::setShape(TetrixShape shape)
+{
+    static const int coordsTable[8][4][2] = {
+        { { 0, 0 },   { 0, 0 },   { 0, 0 },   { 0, 0 } },
+        { { 0, -1 },  { 0, 0 },   { -1, 0 },  { -1, 1 } },
+        { { 0, -1 },  { 0, 0 },   { 1, 0 },   { 1, 1 } },
+        { { 0, -1 },  { 0, 0 },   { 0, 1 },   { 0, 2 } },
+        { { -1, 0 },  { 0, 0 },   { 1, 0 },   { 0, 1 } },
+        { { 0, 0 },   { 1, 0 },   { 0, 1 },   { 1, 1 } },
+        { { -1, -1 }, { 0, -1 },  { 0, 0 },   { 0, 1 } },
+        { { 1, -1 },  { 0, -1 },  { 0, 0 },   { 0, 1 } }
+    };
+
+    for (int i = 0; i < 4 ; i++) {
+        for (int j = 0; j < 2; ++j)
+            coords[i][j] = coordsTable[shape][i][j];
+    }
+    pieceShape = shape;
+//! [1] //! [2]
+}
+//! [2]
+
+//! [3]
+int TetrixPiece::minX() const
+{
+    int min = coords[0][0];
+    for (int i = 1; i < 4; ++i)
+        min = qMin(min, coords[i][0]);
+    return min;
+}
+
+int TetrixPiece::maxX() const
+//! [3] //! [4]
+{
+    int max = coords[0][0];
+    for (int i = 1; i < 4; ++i)
+        max = qMax(max, coords[i][0]);
+    return max;
+}
+//! [4]
+
+//! [5]
+int TetrixPiece::minY() const
+{
+    int min = coords[0][1];
+    for (int i = 1; i < 4; ++i)
+        min = qMin(min, coords[i][1]);
+    return min;
+}
+
+int TetrixPiece::maxY() const
+//! [5] //! [6]
+{
+    int max = coords[0][1];
+    for (int i = 1; i < 4; ++i)
+        max = qMax(max, coords[i][1]);
+    return max;
+}
+//! [6]
+
+//! [7]
+TetrixPiece TetrixPiece::rotatedLeft() const
+{
+    if (pieceShape == SquareShape)
+        return *this;
+
+    TetrixPiece result;
+    result.pieceShape = pieceShape;
+    for (int i = 0; i < 4; ++i) {
+        result.setX(i, y(i));
+        result.setY(i, -x(i));
+    }
+//! [7]
+    return result;
+}
+
+//! [9]
+TetrixPiece TetrixPiece::rotatedRight() const
+{
+    if (pieceShape == SquareShape)
+        return *this;
+
+    TetrixPiece result;
+    result.pieceShape = pieceShape;
+    for (int i = 0; i < 4; ++i) {
+        result.setX(i, -y(i));
+        result.setY(i, x(i));
+    }
+//! [9]
+    return result;
+}