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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtWidgets/QApplication>
#include <QtWidgets/QGraphicsView>
#include <QtWidgets/QGraphicsScene>
#include <QtWidgets/QGraphicsItem>
#include <QtWidgets/QMessageBox>
class MyObject : public QObject
{
public:
MyObject(QGraphicsItem *i, QObject *parent = 0) : QObject(parent), itemToToggle(i)
{
startTimer(500);
}
protected:
void timerEvent(QTimerEvent *)
{
itemToToggle->setVisible(!itemToToggle->isVisible());
}
private:
QGraphicsItem *itemToToggle;
};
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QGraphicsView gv;
QGraphicsScene *scene = new QGraphicsScene(&gv);
gv.setScene(scene);
QGraphicsItem *rect = scene->addRect(0, 0, 200, 200, QPen(Qt::NoPen), QBrush(Qt::yellow));
rect->setFlag(QGraphicsItem::ItemHasNoContents);
rect->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
QGraphicsItem *childRect = scene->addRect(0, 0, 100, 100, QPen(Qt::NoPen), QBrush(Qt::red));
childRect->setParentItem(rect);
gv.show();
MyObject o(rect);
QMessageBox::information(0, "What you should see",
"The red rectangle should toggle visiblity, so you should see it flash on and off");
return a.exec();
}
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