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diff --git a/examples/animation/research/photobrowser/river.h b/examples/animation/research/photobrowser/river.h
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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 QtCore module 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 __RIVER__H__
+#define __RIVER__H__
+
+#include <QtCore/QDirIterator>
+#include <QtGui/QGraphicsWidget>
+
+#include "menu.h"
+
+class RiverItem;
+
+class River : public QGraphicsWidget
+{
+    Q_OBJECT
+public:
+    enum Mode
+    {
+        RiverMode,
+        GridMode,
+        GridFullScreenMode,
+        CoverMode
+    };
+
+    River(const QString &path);
+    void addUnusedRiverItem(RiverItem * item);
+
+    static QSize fixedSize();
+
+    void switchPaused();
+
+    void setMode(Mode m);
+    Mode mode() const;
+
+    Menu *menu;
+
+protected:
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
+    void keyPressEvent ( QKeyEvent * keyEvent );
+    void makeCenterAvailable(qreal size);
+    QPointF gridItemPosition(int row, int col) const;
+    QPixmap pixmap(int index) const;
+
+protected slots:
+    void animationFinished();
+public slots:
+    void setRiverMode();
+    void setGridMode();
+    void setCoverMode();
+
+private:
+    const QFileInfoList m_images;
+    int m_currentImage;
+    mutable QVector<QPixmap> m_pixmaps;
+    QHash<int, RiverItem*> m_items;
+    QList<RiverItem*> m_gridItem;
+    QList<QItemAnimation*> m_pausedAnimations;
+    Mode m_mode;
+    
+    void adjustGrid(int topRight);
+    RiverItem *currentItem() { return m_items.value(m_selectedItem); }
+    RiverItem *createItem(int imageIndex);
+    void setCurrentItem(int currentItem);
+    void navigateBy(int offset);
+    
+    int m_selectedItem;
+    int m_topLeftIndex;
+
+};
+
+
+#endif //__RIVERITEM__H__