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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module 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 <qplatformbackingstore_qpa.h>
#include <qwindow.h>
#include <qpixmap.h>
#include <private/qwindow_p.h>
QT_BEGIN_NAMESPACE
class QPlatformBackingStorePrivate
{
public:
QPlatformBackingStorePrivate(QWindow *w)
: window(w)
{
}
QWindow *window;
QSize size;
};
/*!
\class QPlatformBackingStore
\since 5.0
\internal
\preliminary
\ingroup qpa
\brief The QPlatformBackingStore class provides the drawing area for top-level
windows.
*/
/*!
\fn void QPlatformBackingStore::flush(QWindow *window, const QRegion ®ion,
const QPoint &offset)
Flushes the given \a region from the specified \a window onto the
screen.
Note that the \a offset parameter is currently unused.
*/
/*!
\fn QPaintDevice* QPlatformBackingStore::paintDevice()
Implement this function to return the appropriate paint device.
*/
/*!
Constructs an empty surface for the given top-level \a window.
*/
QPlatformBackingStore::QPlatformBackingStore(QWindow *window)
: d_ptr(new QPlatformBackingStorePrivate(window))
{
}
/*!
Destroys this surface.
*/
QPlatformBackingStore::~QPlatformBackingStore()
{
delete d_ptr;
}
/*!
Returns a pointer to the top-level window associated with this
surface.
*/
QWindow* QPlatformBackingStore::window() const
{
return d_ptr->window;
}
/*!
This function is called before painting onto the surface begins,
with the \a region in which the painting will occur.
\sa endPaint(), paintDevice()
*/
void QPlatformBackingStore::beginPaint(const QRegion &)
{
}
/*!
This function is called after painting onto the surface has ended.
\sa beginPaint(), paintDevice()
*/
void QPlatformBackingStore::endPaint()
{
}
/*!
Scrolls the given \a area \a dx pixels to the right and \a dy
downward; both \a dx and \a dy may be negative.
Returns true if the area was scrolled successfully; false otherwise.
*/
bool QPlatformBackingStore::scroll(const QRegion &area, int dx, int dy)
{
Q_UNUSED(area);
Q_UNUSED(dx);
Q_UNUSED(dy);
return false;
}
QT_END_NAMESPACE
|
