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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 examples of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

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    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

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    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

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

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    38 ** $QT_END_LICENSE$

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

    41 

    42 #include <QGraphicsWidget>

    43 #include <QGraphicsProxyWidget>

    44 #include <QGraphicsAnchorLayout>

    45 #include <QtGui>

    46 

    47 static QGraphicsProxyWidget *createItem(const QSizeF &minimum = QSizeF(100.0, 100.0),

    48                                    const QSizeF &preferred = QSize(150.0, 100.0),

    49                                    const QSizeF &maximum = QSizeF(200.0, 100.0),

    50                                    const QString &name = "0")

    51 {

    52     QGraphicsProxyWidget *w = new QGraphicsProxyWidget;

    53     w->setWidget(new QPushButton(name));

    54     w->setData(0, name);

    55     w->setMinimumSize(minimum);

    56     w->setPreferredSize(preferred);

    57     w->setMaximumSize(maximum);

    58 

    59     w->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);

    60     return w;

    61 }

    62 

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

    64 {

    65     QApplication app(argc, argv);

    66 

    67     QGraphicsScene scene;

    68     scene.setSceneRect(0, 0, 800, 480);

    69 

    70     QSizeF minSize(30, 100);

    71     QSizeF prefSize(210, 100);

    72     QSizeF maxSize(300, 100);

    73 

    74     QGraphicsProxyWidget *a = createItem(minSize, prefSize, maxSize, "A");

    75     QGraphicsProxyWidget *b = createItem(minSize, prefSize, maxSize, "B");

    76     QGraphicsProxyWidget *c = createItem(minSize, prefSize, maxSize, "C");

    77     QGraphicsProxyWidget *d = createItem(minSize, prefSize, maxSize, "D");

    78     QGraphicsProxyWidget *e = createItem(minSize, prefSize, maxSize, "E");

    79     QGraphicsProxyWidget *f = createItem(QSizeF(30, 50), QSizeF(150, 50), maxSize, "F");

    80     QGraphicsProxyWidget *g = createItem(QSizeF(30, 50), QSizeF(30, 100), maxSize, "G");

    81 

    82     QGraphicsAnchorLayout *l = new QGraphicsAnchorLayout;

    83     l->setSpacing(0);

    84 

    85     QGraphicsWidget *w = new QGraphicsWidget(0, Qt::Window);

    86     w->setPos(20, 20);

    87     w->setLayout(l);

    88 

    89     // vertical

    90     QGraphicsAnchor *anchor = l->addAnchor(a, Qt::AnchorTop, l, Qt::AnchorTop);

    91     anchor = l->addAnchor(b, Qt::AnchorTop, l, Qt::AnchorTop);

    92 

    93     anchor = l->addAnchor(c, Qt::AnchorTop, a, Qt::AnchorBottom);

    94     anchor = l->addAnchor(c, Qt::AnchorTop, b, Qt::AnchorBottom);

    95     anchor = l->addAnchor(c, Qt::AnchorBottom, d, Qt::AnchorTop);

    96     anchor = l->addAnchor(c, Qt::AnchorBottom, e, Qt::AnchorTop);

    97 

    98     anchor = l->addAnchor(d, Qt::AnchorBottom, l, Qt::AnchorBottom);

    99     anchor = l->addAnchor(e, Qt::AnchorBottom, l, Qt::AnchorBottom);

   100 

   101     anchor = l->addAnchor(c, Qt::AnchorTop, f, Qt::AnchorTop);

   102     anchor = l->addAnchor(c, Qt::AnchorVerticalCenter, f, Qt::AnchorBottom);

   103     anchor = l->addAnchor(f, Qt::AnchorBottom, g, Qt::AnchorTop);

   104     anchor = l->addAnchor(c, Qt::AnchorBottom, g, Qt::AnchorBottom);

   105 

   106     // horizontal

   107     anchor = l->addAnchor(l, Qt::AnchorLeft, a, Qt::AnchorLeft);

   108     anchor = l->addAnchor(l, Qt::AnchorLeft, d, Qt::AnchorLeft);

   109     anchor = l->addAnchor(a, Qt::AnchorRight, b, Qt::AnchorLeft);

   110 

   111     anchor = l->addAnchor(a, Qt::AnchorRight, c, Qt::AnchorLeft);

   112     anchor = l->addAnchor(c, Qt::AnchorRight, e, Qt::AnchorLeft);

   113 

   114     anchor = l->addAnchor(b, Qt::AnchorRight, l, Qt::AnchorRight);

   115     anchor = l->addAnchor(e, Qt::AnchorRight, l, Qt::AnchorRight);

   116     anchor = l->addAnchor(d, Qt::AnchorRight, e, Qt::AnchorLeft);

   117 

   118     anchor = l->addAnchor(l, Qt::AnchorLeft, f, Qt::AnchorLeft);

   119     anchor = l->addAnchor(l, Qt::AnchorLeft, g, Qt::AnchorLeft);

   120     anchor = l->addAnchor(f, Qt::AnchorRight, g, Qt::AnchorRight);

   121 

   122 

   123     scene.addItem(w);

   124     scene.setBackgroundBrush(Qt::darkGreen);

   125     QGraphicsView *view = new QGraphicsView(&scene);

   126     view->show();

   127 

   128     return app.exec();

   129 }