Long live Qt!

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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 ITEM_CIRCLE_ANIMATION_H
+#define ITEM_CIRCLE_ANIMATION_H
+
+#include <QtCore>
+#include <QObject>
+#include <QtGui>
+#include <QTimeLine>
+#include <QList>
+#include "demoitem.h"
+#include "letteritem.h"
+#include "guideline.h"
+#include "guidecircle.h"
+
+typedef QList<LetterItem *> LetterList;
+class TickerEffect;
+
+class ItemCircleAnimation : public QObject, public DemoItem
+{
+public:
+    ItemCircleAnimation(QGraphicsScene *scene = 0, QGraphicsItem *parent = 0);
+    virtual ~ItemCircleAnimation();
+
+    // overidden methods:
+    QRectF boundingRect() const;
+    void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget * = 0);
+    void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
+    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
+    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
+    void mousePressEvent(QGraphicsSceneMouseEvent *event);
+    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
+    void wheelEvent(QGraphicsSceneWheelEvent *event);
+    void animationStarted(int id = 0);
+    void animationStopped(int id = 0);
+    void prepare();
+    void tick();
+    void switchToNextEffect();
+    void useGuideQt();
+    void useGuideTt();
+    void pause(bool on);
+
+    bool tickOnPaint;
+    bool paused;
+    bool doIntroTransitions;
+
+private:
+    void setupLetters();
+    void createLetter(char c);
+    void setupGuides();
+    void useGuide(Guide *guide, int firstLetter, int lastLetter);
+    void swapModel();
+    void setTickerScale(float s);
+
+    int showCount;
+    float scale;
+    QPointF mouseMoveLastPosition;
+    int letterCount;
+    LetterList *letterList;
+    Guide *qtGuide1;
+    Guide *qtGuide2;
+    Guide *qtGuide3;
+    Guide *currGuide;
+    TickerEffect *effect;
+    QTime tickTimer;
+};
+
+#endif // ITEM_CIRCLE_ANIMATION_H
+
+
+