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robot.h Example File
graphicsview/dragdroprobot/robot.h

 /****************************************************************************
 **
 ** Copyright (C) 2006-2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** Licensees holding a valid Qt License Agreement may use this file in
 ** accordance with the rights, responsibilities and obligations
 ** contained therein.  Please consult your licensing agreement or
 ** contact [email protected] if any conditions of this licensing
 ** agreement are not clear to you.
 **
 ** Further information about Qt licensing is available at:
 ** http://trolltech.com/products/appdev/licensing.
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 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 ****************************************************************************/

 #ifndef ROBOT_H
 #define ROBOT_H

 #include <QGraphicsItem>

 class QGraphicsSceneMouseEvent;
 class QTimeLine;

 class RobotPart : public QGraphicsItem
 {
 public:
     RobotPart(QGraphicsItem *parent = 0);

 protected:
     void dragEnterEvent(QGraphicsSceneDragDropEvent *event);
     void dragLeaveEvent(QGraphicsSceneDragDropEvent *event);
     void dropEvent(QGraphicsSceneDragDropEvent *event);

     QPixmap pixmap;
     QColor color;
     bool dragOver;
 };

 class RobotHead : public RobotPart
 {
 public:
     RobotHead(QGraphicsItem *parent = 0);

     QRectF boundingRect() const;
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);

     enum { Type = UserType + 1 };
     int type() const;
 };

 class RobotTorso : public RobotPart
 {
 public:
     RobotTorso(QGraphicsItem *parent = 0);

     QRectF boundingRect() const;
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
 };

 class RobotLimb : public RobotPart
 {
 public:
     RobotLimb(QGraphicsItem *parent = 0);

     QRectF boundingRect() const;
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
 };

 class Robot : public RobotPart
 {
 public:
     Robot();
     ~Robot();

     QRectF boundingRect() const;
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);

 private:
     QTimeLine *timeLine;
 };

 #endif