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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, 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 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qscreendriverfactory_qws.h"
#include "qscreen_qws.h"
#include "qapplication.h"
#include "qscreenlinuxfb_qws.h"
#include "qscreentransformed_qws.h"
#include "qscreenvfb_qws.h"
#include "qscreenmulti_qws_p.h"
#include <stdlib.h>
#include "private/qfactoryloader_p.h"
#include "qscreendriverplugin_qws.h"
#ifndef QT_NO_QWS_VNC
#include "qscreenvnc_qws.h"
#endif
QT_BEGIN_NAMESPACE
#if !defined(Q_OS_WIN32) || defined(QT_MAKEDLL)
#ifndef QT_NO_LIBRARY
Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
(QScreenDriverFactoryInterface_iid,
QLatin1String("/gfxdrivers"), Qt::CaseInsensitive))
#endif //QT_NO_LIBRARY
#endif //QT_MAKEDLL
/*!
\class QScreenDriverFactory
\ingroup qws
\brief The QScreenDriverFactory class creates screen drivers in
Qt for Embedded Linux.
Note that this class is only available in \l{Qt for Embedded Linux}.
QScreenDriverFactory is used to detect and instantiate the
available screen drivers, allowing \l{Qt for Embedded Linux} to load the
preferred driver into the server application at runtime. The
create() function returns a QScreen object representing the screen
driver identified by a given key. The valid keys (i.e. the
supported drivers) can be retrieved using the keys() function.
\l{Qt for Embedded Linux} provides several built-in screen drivers. In
addition, custom screen drivers can be added using Qt's plugin
mechanism, i.e. by subclassing the QScreen class and creating a
screen driver plugin (QScreenDriverPlugin). See the
\l{Qt for Embedded Linux Display Management}{display management}
documentation for details.
\sa QScreen, QScreenDriverPlugin
*/
/*!
Creates the screen driver specified by the given \a key, using the
display specified by the given \a displayId.
Note that the keys are case-insensitive.
\sa keys()
*/
QScreen *QScreenDriverFactory::create(const QString& key, int displayId)
{
QString driver = key.toLower();
#ifndef QT_NO_QWS_QVFB
if (driver == QLatin1String("qvfb") || driver.isEmpty())
return new QVFbScreen(displayId);
#endif
#ifndef QT_NO_QWS_LINUXFB
if (driver == QLatin1String("linuxfb") || driver.isEmpty())
return new QLinuxFbScreen(displayId);
#endif
#ifndef QT_NO_QWS_TRANSFORMED
if (driver == QLatin1String("transformed"))
return new QTransformedScreen(displayId);
#endif
#ifndef QT_NO_QWS_VNC
if (driver == QLatin1String("vnc"))
return new QVNCScreen(displayId);
#endif
#ifndef QT_NO_QWS_MULTISCREEN
if (driver == QLatin1String("multi"))
return new QMultiScreen(displayId);
#endif
#if !defined(Q_OS_WIN32) || defined(QT_MAKEDLL)
#ifndef QT_NO_LIBRARY
if (QScreenDriverFactoryInterface *factory = qobject_cast<QScreenDriverFactoryInterface*>(loader()->instance(key)))
return factory->create(driver, displayId);
#endif
#endif
return 0;
}
/*!
Returns the list of valid keys, i.e. the available screen drivers.
\sa create()
*/
QStringList QScreenDriverFactory::keys()
{
QStringList list;
#ifndef QT_NO_QWS_QVFB
list << QLatin1String("QVFb");
#endif
#ifndef QT_NO_QWS_LINUXFB
list << QLatin1String("LinuxFb");
#endif
#ifndef QT_NO_QWS_TRANSFORMED
list << QLatin1String("Transformed");
#endif
#ifndef QT_NO_QWS_VNC
list << QLatin1String("VNC");
#endif
#ifndef QT_NO_QWS_MULTISCREEN
list << QLatin1String("Multi");
#endif
#if !defined(Q_OS_WIN32) || defined(QT_MAKEDLL)
#ifndef QT_NO_LIBRARY
QStringList plugins = loader()->keys();
for (int i = 0; i < plugins.size(); ++i) {
# ifdef QT_NO_QWS_QVFB
// give QVFb top priority for autodetection
if (plugins.at(i) == QLatin1String("QVFb"))
list.prepend(plugins.at(i));
else
# endif
if (!list.contains(plugins.at(i)))
list += plugins.at(i);
}
#endif //QT_NO_LIBRARY
#endif //QT_MAKEDLL
return list;
}
QT_END_NAMESPACE
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