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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 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 "qplatformscreenpageflipper.h"
QT_BEGIN_NAMESPACE
/*!
\class QPlatformScreenBuffer
\since 5.0
\internal
\preliminary
\ingroup qpa
\brief The QPlatformScreenBuffer class provides an abstraction for screen buffers.
*/
QPlatformScreenBuffer::QPlatformScreenBuffer()
: m_destroyed(false)
, m_ready(true)
{
}
QPlatformScreenBuffer::~QPlatformScreenBuffer()
{
}
bool QPlatformScreenBuffer::isDestroyed() const
{
return m_destroyed;
}
bool QPlatformScreenBuffer::isReady() const
{
return m_ready;
}
void QPlatformScreenBuffer::aboutToBeDisplayed()
{
}
void QPlatformScreenBuffer::displayed()
{
}
/*!
\class QPlatformScreenPageFlipper
\since 5.0
\internal
\preliminary
\ingroup qpa
\brief The QPlatformScreenPageFlipper class provides an abstract interface for display buffer swapping
Implement the displayBuffer() function to initiate a buffer swap. The
bufferDisplayed() signal should be emitted once the buffer is actually displayed on
the screen. The bufferReleased() signal should be emitted when the buffer data is no
longer owned by the display hardware.
*/
QPlatformScreenPageFlipper::QPlatformScreenPageFlipper(QObject *parent)
:QObject(parent)
{
}
/*!
\fn bool QPlatformScreenPageFlipper::displayBuffer(QPlatformScreenBuffer *buffer)
Implemented in subclasses to display \a buffer directly on the screen. Returns \c true
if it is possible to display the buffer, and \c false if the buffer cannot be displayed.
If this function returns true, the buffer must not be modified or destroyed before the
bufferReleased() signal is emitted. The signal bufferDisplayed() is emitted when the buffer
is displayed on the screen. The two signals may be emitted in either order.
This function is allowed to block.
*/
QT_END_NAMESPACE
|
