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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 <qwindow.h>
#include <qbackingstore.h>
#include <qpainter.h>
#include <QtTest/QtTest>
#include <QEvent>
// For QSignalSpy slot connections.
Q_DECLARE_METATYPE(Qt::ScreenOrientation)
class tst_QBackingStore : public QObject
{
Q_OBJECT
private slots:
void flush();
};
class Window : public QWindow
{
public:
Window()
: backingStore(this)
{
}
void resizeEvent(QResizeEvent *)
{
backingStore.resize(size());
}
void exposeEvent(QExposeEvent *event)
{
QRect rect(QPoint(), size());
backingStore.beginPaint(rect);
QPainter p(backingStore.paintDevice());
p.fillRect(rect, Qt::white);
p.end();
backingStore.endPaint();
backingStore.flush(event->region().boundingRect());
}
private:
QBackingStore backingStore;
};
void tst_QBackingStore::flush()
{
Window window;
window.setGeometry(20, 20, 200, 200);
window.showMaximized();
QTRY_VERIFY(window.isExposed());
}
#include <tst_qbackingstore.moc>
QTEST_MAIN(tst_QBackingStore);
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