Qt Reference Documentation

# cloud.h Example File

network/bearercloud/cloud.h

     /****************************************************************************
     **
     ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** You may use this file under the terms of the BSD license as follows:
     **
     ** "Redistribution and use in source and binary forms, with or without
     ** modification, are permitted provided that the following conditions are
     ** met:
     **   * Redistributions of source code must retain the above copyright
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
     **     the names of its contributors may be used to endorse or promote
     **     products derived from this software without specific prior written
     **     permission.
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #include <QNetworkConfiguration>
     #include <QNetworkSession>

     #include <QGraphicsItem>
     QT_USE_NAMESPACE

     class QGraphicsTextItem;
     class QGraphicsSvgItem;

     class Cloud : public QObject, public QGraphicsItem
     {
         Q_OBJECT
         Q_INTERFACES(QGraphicsItem)

     public:
         explicit Cloud(const QNetworkConfiguration &config, QGraphicsItem *parent = 0);
         ~Cloud();

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

         void setFinalScale(qreal factor);
         void setDeleteAfterAnimation(bool deleteAfter);

         void calculateForces();

         bool advance();
         QRectF boundingRect() const;
         void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);

         static qreal getRadiusForState(QNetworkConfiguration::StateFlags state);

     protected:
         QVariant itemChange(GraphicsItemChange change, const QVariant &value);
         void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);

     private Q_SLOTS:
         void stateChanged(QNetworkSession::State state);
         void newConfigurationActivated();

     private:
         QNetworkConfiguration configuration;
         QNetworkSession *session;

         QGraphicsTextItem *text;
         QGraphicsSvgItem *icon;

         qreal finalOpacity;
         qreal finalScale;
         qreal currentScale;

         QPointF newPos;

         bool deleteAfterAnimation;
     };