| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation ([email protected])
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| 6 | **
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| 7 | ** This file is part of the QtGui module of the Qt Toolkit.
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| 8 | **
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| 9 | ** $QT_BEGIN_LICENSE:LGPL$
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| 10 | ** Commercial Usage
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the
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| 13 | ** Software or, alternatively, in accordance with the terms contained in
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| 14 | ** a written agreement between you and Nokia.
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| 15 | **
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| 16 | ** GNU Lesser General Public License Usage
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| 17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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| 18 | ** General Public License version 2.1 as published by the Free Software
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| 19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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| 20 | ** packaging of this file. Please review the following information to
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| 21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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| 22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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| 23 | **
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| 24 | ** In addition, as a special exception, Nokia gives you certain additional
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| 25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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| 26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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| 27 | **
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| 28 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 32 | ** packaging of this file. Please review the following information to
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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| 35 | **
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| 36 | ** If you have questions regarding the use of this file, please contact
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| 37 | ** Nokia at [email protected].
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| 38 | ** $QT_END_LICENSE$
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| 39 | **
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | #include "qscreendriverfactory_qws.h"
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| 43 |
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| 44 | #include "qscreen_qws.h"
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| 45 | #include "qapplication.h"
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| 46 | #include "qscreenlinuxfb_qws.h"
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| 47 | #include "qscreentransformed_qws.h"
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| 48 | #include "qscreenvfb_qws.h"
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| 49 | #include "qscreenmulti_qws_p.h"
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| 50 | #include "qscreenqnx_qws.h"
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| 51 | #include <stdlib.h>
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| 52 | #include "private/qfactoryloader_p.h"
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| 53 | #include "qscreendriverplugin_qws.h"
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| 54 | #ifndef QT_NO_QWS_DIRECTFB
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| 55 | #include "qdirectfbscreen.h"
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| 56 | #endif
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| 57 | #ifndef QT_NO_QWS_VNC
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| 58 | #include "qscreenvnc_qws.h"
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| 59 | #endif
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| 60 |
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| 61 | QT_BEGIN_NAMESPACE
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| 62 |
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| 63 | #if !defined(Q_OS_WIN32) || defined(QT_MAKEDLL)
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| 64 | #ifndef QT_NO_LIBRARY
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| 65 |
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| 66 | Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
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| 67 | (QScreenDriverFactoryInterface_iid,
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| 68 | QLatin1String("/gfxdrivers"), Qt::CaseInsensitive))
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| 69 |
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| 70 | #endif //QT_NO_LIBRARY
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| 71 | #endif //QT_MAKEDLL
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| 72 |
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| 73 | /*!
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| 74 | \class QScreenDriverFactory
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| 75 | \ingroup qws
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| 76 |
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| 77 | \brief The QScreenDriverFactory class creates screen drivers in
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| 78 | Qt for Embedded Linux.
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| 79 |
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| 80 | Note that this class is only available in \l{Qt for Embedded Linux}.
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| 81 |
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| 82 | QScreenDriverFactory is used to detect and instantiate the
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| 83 | available screen drivers, allowing \l{Qt for Embedded Linux} to load the
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| 84 | preferred driver into the server application at runtime. The
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| 85 | create() function returns a QScreen object representing the screen
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| 86 | driver identified by a given key. The valid keys (i.e. the
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| 87 | supported drivers) can be retrieved using the keys() function.
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| 88 |
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| 89 |
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| 90 | \l{Qt for Embedded Linux} provides several built-in screen drivers. In
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| 91 | addition, custom screen drivers can be added using Qt's plugin
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| 92 | mechanism, i.e. by subclassing the QScreen class and creating a
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| 93 | screen driver plugin (QScreenDriverPlugin). See the
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| 94 | \l{Qt for Embedded Linux Display Management}{display management}
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| 95 | documentation for details.
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| 96 |
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| 97 | \sa QScreen, QScreenDriverPlugin
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| 98 | */
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| 99 |
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| 100 | /*!
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| 101 | Creates the screen driver specified by the given \a key, using the
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| 102 | display specified by the given \a displayId.
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| 103 |
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| 104 | Note that the keys are case-insensitive.
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| 105 |
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| 106 | \sa keys()
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| 107 | */
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| 108 | QScreen *QScreenDriverFactory::create(const QString& key, int displayId)
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| 109 | {
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| 110 | QString driver = key.toLower();
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| 111 | #if defined(Q_OS_QNX) && !defined(QT_NO_QWS_QNX)
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| 112 | if (driver == QLatin1String("qnx") || driver.isEmpty())
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| 113 | return new QQnxScreen(displayId);
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| 114 | #endif
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| 115 | #ifndef QT_NO_QWS_QVFB
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| 116 | if (driver == QLatin1String("qvfb") || driver.isEmpty())
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| 117 | return new QVFbScreen(displayId);
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| 118 | #endif
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| 119 | #ifndef QT_NO_QWS_LINUXFB
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| 120 | if (driver == QLatin1String("linuxfb") || driver.isEmpty())
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| 121 | return new QLinuxFbScreen(displayId);
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| 122 | #endif
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| 123 | #ifndef QT_NO_QWS_DIRECTFB
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| 124 | if (driver == QLatin1String("directfb") || driver.isEmpty())
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| 125 | return new QDirectFBScreen(displayId);
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| 126 | #endif
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| 127 | #ifndef QT_NO_QWS_TRANSFORMED
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| 128 | if (driver == QLatin1String("transformed"))
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| 129 | return new QTransformedScreen(displayId);
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| 130 | #endif
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| 131 | #ifndef QT_NO_QWS_VNC
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| 132 | if (driver == QLatin1String("vnc"))
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| 133 | return new QVNCScreen(displayId);
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| 134 | #endif
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| 135 | #ifndef QT_NO_QWS_MULTISCREEN
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| 136 | if (driver == QLatin1String("multi"))
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| 137 | return new QMultiScreen(displayId);
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| 138 | #endif
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| 139 | #if !defined(Q_OS_WIN32) || defined(QT_MAKEDLL)
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| 140 | #ifndef QT_NO_LIBRARY
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| 141 |
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| 142 | if (QScreenDriverFactoryInterface *factory = qobject_cast<QScreenDriverFactoryInterface*>(loader()->instance(key)))
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| 143 | return factory->create(driver, displayId);
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| 144 |
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| 145 | #endif
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| 146 | #endif
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| 147 | return 0;
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| 148 | }
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| 149 |
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| 150 | /*!
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| 151 | Returns the list of valid keys, i.e. the available screen drivers.
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| 152 |
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| 153 | \sa create()
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| 154 | */
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| 155 | QStringList QScreenDriverFactory::keys()
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| 156 | {
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| 157 | QStringList list;
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| 158 |
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| 159 | #if defined(Q_OS_QNX) && !defined(QT_NO_QWS_QNX)
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| 160 | list << QLatin1String("QNX");
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| 161 | #endif
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| 162 | #ifndef QT_NO_QWS_QVFB
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| 163 | list << QLatin1String("QVFb");
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| 164 | #endif
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| 165 | #ifndef QT_NO_QWS_LINUXFB
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| 166 | list << QLatin1String("LinuxFb");
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| 167 | #endif
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| 168 | #ifndef QT_NO_QWS_TRANSFORMED
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| 169 | list << QLatin1String("Transformed");
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| 170 | #endif
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| 171 | #ifndef QT_NO_QWS_VNC
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| 172 | list << QLatin1String("VNC");
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| 173 | #endif
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| 174 | #ifndef QT_NO_QWS_MULTISCREEN
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| 175 | list << QLatin1String("Multi");
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| 176 | #endif
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| 177 |
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| 178 | #if !defined(Q_OS_WIN32) || defined(QT_MAKEDLL)
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| 179 | #ifndef QT_NO_LIBRARY
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| 180 | QStringList plugins = loader()->keys();
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| 181 | for (int i = 0; i < plugins.size(); ++i) {
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| 182 | # ifdef QT_NO_QWS_QVFB
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| 183 | // give QVFb top priority for autodetection
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| 184 | if (plugins.at(i) == QLatin1String("QVFb"))
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| 185 | list.prepend(plugins.at(i));
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| 186 | else
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| 187 | # endif
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| 188 | if (!list.contains(plugins.at(i)))
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| 189 | list += plugins.at(i);
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| 190 | }
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| 191 | #endif //QT_NO_LIBRARY
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| 192 | #endif //QT_MAKEDLL
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| 193 | return list;
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| 194 | }
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| 195 |
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| 196 | QT_END_NAMESPACE
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