diff options
Diffstat (limited to 'src/gui/embedded/qscreendriverfactory_qws.cpp')
| -rw-r--r-- | src/gui/embedded/qscreendriverfactory_qws.cpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/gui/embedded/qscreendriverfactory_qws.cpp b/src/gui/embedded/qscreendriverfactory_qws.cpp new file mode 100644 index 0000000..8b17fba --- /dev/null +++ b/src/gui/embedded/qscreendriverfactory_qws.cpp @@ -0,0 +1,183 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 qt-sales@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 <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 |