104 lines
2.7 KiB
C++
104 lines
2.7 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <qwindow.h>
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#include <qbackingstore.h>
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#include <qpainter.h>
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#include <QtTest/QtTest>
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#include <QEvent>
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// For QSignalSpy slot connections.
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Q_DECLARE_METATYPE(Qt::ScreenOrientation)
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class tst_QBackingStore : public QObject
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{
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Q_OBJECT
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private slots:
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void flush();
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};
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class Window : public QWindow
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{
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public:
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Window()
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: backingStore(this)
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{
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}
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void resizeEvent(QResizeEvent *)
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{
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backingStore.resize(size());
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}
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void exposeEvent(QExposeEvent *event)
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{
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QRect rect(QPoint(), size());
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backingStore.beginPaint(rect);
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QPainter p(backingStore.paintDevice());
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p.fillRect(rect, Qt::white);
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p.end();
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backingStore.endPaint();
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backingStore.flush(event->region().boundingRect());
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}
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private:
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QBackingStore backingStore;
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};
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void tst_QBackingStore::flush()
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{
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Window window;
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window.setGeometry(20, 20, 200, 200);
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window.showMaximized();
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QTRY_VERIFY(window.isExposed());
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}
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#include <tst_qbackingstore.moc>
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QTEST_MAIN(tst_QBackingStore);
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