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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtCore module of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

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    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

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    36 **

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    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include <QtCore>

    43 #include <QtGui>

    44 

    45 

    46 class Pixmap : public QGraphicsWidget

    47 {

    48     Q_OBJECT

    49 

    50 public:

    51     Pixmap(const QPixmap &pix, QGraphicsItem *parent = 0)

    52         : QGraphicsWidget(parent), orig(pix), p(pix)

    53     {

    54     }

    55 

    56     void paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)

    57     {

    58         painter->drawPixmap(QPointF(), p);

    59     }

    60 

    61     virtual void mousePressEvent(QGraphicsSceneMouseEvent * )

    62     {

    63         emit clicked();

    64     }

    65 

    66     virtual void setGeometry(const QRectF &rect)

    67     {

    68         QGraphicsWidget::setGeometry(rect);

    69 

    70         if (rect.size().width() > orig.size().width())

    71             p = orig.scaled(rect.size().toSize());

    72         else

    73             p = orig;

    74     }

    75 

    76 Q_SIGNALS:

    77     void clicked();

    78 

    79 private:

    80     QPixmap orig;

    81     QPixmap p;

    82 };

    83 

    84 void createStates(const QObjectList &objects,

    85                   const QRect &selectedRect, QState *parent)

    86 {

    87     for (int i = 0; i < objects.size(); ++i) {

    88         QState *state = new QState(parent);

    89         state->assignProperty(objects.at(i), "geometry", selectedRect);

    90         parent->addTransition(objects.at(i), SIGNAL(clicked()), state);

    91     }

    92 }

    93 

    94 void createAnimations(const QObjectList &objects, QStateMachine *machine)

    95 {

    96     for (int i=0; i<objects.size(); ++i)

    97         machine->addDefaultAnimation(new QPropertyAnimation(objects.at(i), "geometry"));    

    98 }

    99 

   100 int main(int argc, char **argv)

   101 {

   102     Q_INIT_RESOURCE(appchooser);

   103 

   104     QApplication app(argc, argv);

   105 

   106     Pixmap *p1 = new Pixmap(QPixmap(":/digikam.png"));

   107     Pixmap *p2 = new Pixmap(QPixmap(":/akregator.png"));

   108     Pixmap *p3 = new Pixmap(QPixmap(":/accessories-dictionary.png"));

   109     Pixmap *p4 = new Pixmap(QPixmap(":/k3b.png"));

   110 

   111     p1->setObjectName("p1");

   112     p2->setObjectName("p2");

   113     p3->setObjectName("p3");

   114     p4->setObjectName("p4");

   115 

   116     p1->setGeometry(QRectF(0.0, 0.0, 64.0, 64.0));

   117     p2->setGeometry(QRectF(236.0, 0.0, 64.0, 64.0));

   118     p3->setGeometry(QRectF(236.0, 236.0, 64.0, 64.0));

   119     p4->setGeometry(QRectF(0.0, 236.0, 64.0, 64.0));

   120 

   121     QGraphicsScene scene(0, 0, 300, 300);

   122     scene.setBackgroundBrush(Qt::white);

   123     scene.addItem(p1);

   124     scene.addItem(p2);

   125     scene.addItem(p3);

   126     scene.addItem(p4);

   127 

   128     QGraphicsView window(&scene);

   129     window.setFrameStyle(0);

   130     window.setAlignment(Qt::AlignLeft | Qt::AlignTop);

   131     window.setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

   132     window.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

   133 

   134     QStateMachine machine;

   135     machine.setGlobalRestorePolicy(QStateMachine::RestoreProperties);

   136 

   137     QState *group = new QState(&machine);

   138     group->setObjectName("group");

   139     QRect selectedRect(86, 86, 128, 128);

   140 

   141     QState *idleState = new QState(group);

   142     group->setInitialState(idleState);

   143 

   144     QObjectList objects; 

   145     objects << p1 << p2 << p3 << p4;

   146     createStates(objects, selectedRect, group);

   147     createAnimations(objects, &machine);

   148 

   149     machine.setInitialState(group);

   150     machine.start();

   151 

   152     window.resize(300, 300);

   153     window.show();

   154 

   155     return app.exec();

   156 }

   157 

   158 #include "main.moc"