Long live Qt 4.5!

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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 demonstration applications 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 GUIDE_H
+#define GUIDE_H
+
+#include "demoitem.h"
+
+class Guide
+{
+public:
+    Guide(Guide *follows = 0);
+    virtual ~Guide();
+
+    virtual void guide(DemoItem *item, float moveSpeed) = 0;
+    void move(DemoItem *item, QPointF &dest, float moveSpeed);
+    virtual QPointF startPos(){ return QPointF(0, 0); };
+    virtual QPointF endPos(){ return QPointF(0, 0); };
+    virtual float length(){ return 1; };
+    float lengthAll();
+
+    void setScale(float scaleX, float scaleY, bool all = true);
+    void setFence(const QRectF &fence, bool all = true);
+
+    int startLength;
+    Guide *nextGuide;
+    Guide *firstGuide;
+    Guide *prevGuide;
+    float scaleX;
+    float scaleY;
+    QRectF fence;
+};
+
+#endif // GUIDE_H
+