/****************************************************************************

**

** Copyright (C) 2009 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.

**

** $QT_BEGIN_LICENSE:LGPL$

** 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 Technology Preview License Agreement accompanying

** this package.

**

** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#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 "qscreenqnx_qws.h"

#include <stdlib.h>

#include "private/qfactoryloader_p.h"

#include "qscreendriverplugin_qws.h"

#ifndef QT_NO_QWS_DIRECTFB

#include "qdirectfbscreen.h"

#endif

#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();

#if defined(Q_OS_QNX) && !defined(QT_NO_QWS_QNX)

    if (driver == QLatin1String("qnx") || driver.isEmpty())

        return new QQnxScreen(displayId);

#endif

#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_DIRECTFB

    if (driver == QLatin1String("directfb") || driver.isEmpty())

        return new QDirectFBScreen(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;

#if defined(Q_OS_QNX) && !defined(QT_NO_QWS_QNX)

    list << QLatin1String("QNX");

#endif

#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