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

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the QtGui module of the Qt Toolkit.

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** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

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** 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

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** $QT_END_LICENSE$

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

#include "qgraphicssystemfactory_p.h"

#include "qgraphicssystemplugin_p.h"

#include "private/qfactoryloader_p.h"

#include "qmutex.h"

#include "qapplication.h"

#include "qgraphicssystem_raster_p.h"

#include "qdebug.h"

QT_BEGIN_NAMESPACE

#ifndef QT_NO_LIBRARY

Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,

    (QGraphicsSystemFactoryInterface_iid, QLatin1String("/graphicssystems"), Qt::CaseInsensitive))

#endif

QGraphicsSystem *QGraphicsSystemFactory::create(const QString& key)

{

    QGraphicsSystem *ret = 0;

    QString system = key.toLower();

#if defined (QT_GRAPHICSSYSTEM_OPENGL)

    if (system.isEmpty()) {

        system = QLatin1String("opengl");

    }

#elif defined (QT_GRAPHICSSYSTEM_OPENVG)

    if (system.isEmpty()) {

        system = QLatin1String("openvg");

    }

#elif defined (QT_GRAPHICSSYSTEM_RASTER) && !defined(Q_WS_WIN) && !defined(Q_OS_SYMBIAN)

    if (system.isEmpty()) {

        system = QLatin1String("raster");

    }

#endif

    if (system == QLatin1String("raster"))

        return new QRasterGraphicsSystem;

    else if (system.isEmpty() || system == QLatin1String("native"))

        return 0;

#ifndef QT_NO_LIBRARY

    if (!ret) {

        if (QGraphicsSystemFactoryInterface *factory = qobject_cast<QGraphicsSystemFactoryInterface*>(loader()->instance(system)))

            ret = factory->create(system);

    }

#endif

    if (!ret)

        qWarning() << "Unable to load graphicssystem" << system;

    return ret;

}

/*!

    Returns the list of valid keys, i.e. the keys this factory can

    create styles for.

    \sa create()

*/

QStringList QGraphicsSystemFactory::keys()

{

#ifndef QT_NO_LIBRARY

    QStringList list = loader()->keys();

#else

    QStringList list;

#endif

    if (!list.contains(QLatin1String("Raster")))

        list << QLatin1String("raster");

    return list;

}

QT_END_NAMESPACE