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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, 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 The Qt Company Ltd 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 <QtWidgets>
-
-static QGraphicsProxyWidget *createItem(const QSizeF &minimum = QSizeF(100.0, 100.0),
- const QSizeF &preferred = QSize(150.0, 100.0),
- const QSizeF &maximum = QSizeF(200.0, 100.0),
- const QString &name = "0")
-{
- QGraphicsProxyWidget *w = new QGraphicsProxyWidget;
- w->setWidget(new QPushButton(name));
- w->setData(0, name);
- w->setMinimumSize(minimum);
- w->setPreferredSize(preferred);
- w->setMaximumSize(maximum);
-
- w->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
- return w;
-}
-
-int main(int argc, char **argv)
-{
- QApplication app(argc, argv);
-
- QGraphicsScene scene;
- scene.setSceneRect(0, 0, 800, 480);
-
- QSizeF minSize(30, 100);
- QSizeF prefSize(210, 100);
- QSizeF maxSize(300, 100);
-
- QGraphicsProxyWidget *a = createItem(minSize, prefSize, maxSize, "A");
- QGraphicsProxyWidget *b = createItem(minSize, prefSize, maxSize, "B");
- QGraphicsProxyWidget *c = createItem(minSize, prefSize, maxSize, "C");
- QGraphicsProxyWidget *d = createItem(minSize, prefSize, maxSize, "D");
- QGraphicsProxyWidget *e = createItem(minSize, prefSize, maxSize, "E");
- QGraphicsProxyWidget *f = createItem(QSizeF(30, 50), QSizeF(150, 50), maxSize, "F (overflow)");
- QGraphicsProxyWidget *g = createItem(QSizeF(30, 50), QSizeF(30, 100), maxSize, "G (overflow)");
-
- QGraphicsAnchorLayout *l = new QGraphicsAnchorLayout;
- l->setSpacing(0);
-
- QGraphicsWidget *w = new QGraphicsWidget(nullptr, Qt::Window);
- w->setPos(20, 20);
- w->setLayout(l);
-
- // vertical
- l->addAnchor(a, Qt::AnchorTop, l, Qt::AnchorTop);
- l->addAnchor(b, Qt::AnchorTop, l, Qt::AnchorTop);
-
- l->addAnchor(c, Qt::AnchorTop, a, Qt::AnchorBottom);
- l->addAnchor(c, Qt::AnchorTop, b, Qt::AnchorBottom);
- l->addAnchor(c, Qt::AnchorBottom, d, Qt::AnchorTop);
- l->addAnchor(c, Qt::AnchorBottom, e, Qt::AnchorTop);
-
- l->addAnchor(d, Qt::AnchorBottom, l, Qt::AnchorBottom);
- l->addAnchor(e, Qt::AnchorBottom, l, Qt::AnchorBottom);
-
- l->addAnchor(c, Qt::AnchorTop, f, Qt::AnchorTop);
- l->addAnchor(c, Qt::AnchorVerticalCenter, f, Qt::AnchorBottom);
- l->addAnchor(f, Qt::AnchorBottom, g, Qt::AnchorTop);
- l->addAnchor(c, Qt::AnchorBottom, g, Qt::AnchorBottom);
-
- // horizontal
- l->addAnchor(l, Qt::AnchorLeft, a, Qt::AnchorLeft);
- l->addAnchor(l, Qt::AnchorLeft, d, Qt::AnchorLeft);
- l->addAnchor(a, Qt::AnchorRight, b, Qt::AnchorLeft);
-
- l->addAnchor(a, Qt::AnchorRight, c, Qt::AnchorLeft);
- l->addAnchor(c, Qt::AnchorRight, e, Qt::AnchorLeft);
-
- l->addAnchor(b, Qt::AnchorRight, l, Qt::AnchorRight);
- l->addAnchor(e, Qt::AnchorRight, l, Qt::AnchorRight);
- l->addAnchor(d, Qt::AnchorRight, e, Qt::AnchorLeft);
-
- l->addAnchor(l, Qt::AnchorLeft, f, Qt::AnchorLeft);
- l->addAnchor(l, Qt::AnchorLeft, g, Qt::AnchorLeft);
- l->addAnchor(f, Qt::AnchorRight, g, Qt::AnchorRight);
-
-
- scene.addItem(w);
- scene.setBackgroundBrush(Qt::darkGreen);
- QGraphicsView view(&scene);
-
- view.show();
-
- return app.exec();
-}