QScreenDriverFactory Class Reference

The QScreenDriverFactory class creates screen drivers in Qt for Embedded Linux. More...

#include <qscreendriverfactory_qws.h>

Static Public Functions
static QScreen *	create (const QString &, int)
static QStringList	keys ()
	Returns the list of valid keys, i.e. More...

Detailed Description

The QScreenDriverFactory class creates screen drivers in Qt for Embedded Linux.

Note that this class is only available in Qt for Embedded Linux.

QScreenDriverFactory is used to detect and instantiate the available screen drivers, allowing 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.

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 Qt for Embedded Linux Display Management{display management} documentation for details.

See also

QScreen, QScreenDriverPlugin

Definition at line 56 of file qscreendriverfactory_qws.h.

Functions

create()

static QScreen* QScreenDriverFactory::create ( const QString &  , int    )

static

Referenced by qt_get_screen().

keys()

QStringList QScreenDriverFactory::keys ( )

static

Returns the list of valid keys, i.e.

the available screen drivers.

See also

create()

Definition at line 163 of file qscreendriverfactory_qws.cpp.

Referenced by QVNCScreen::connect(), QTransformedScreen::connect(), and qt_get_screen().

{
    QStringList list;

#if defined(Q_OS_QNX) && !defined(QT_NO_QWS_QNX)
    list << QLatin1String("QNX");
#endif
#if defined(Q_OS_INTEGRITY) && !defined(QT_NO_QWS_INTEGRITY)
    list << QLatin1String("INTEGRITYFB");
#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;
}

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The documentation for this class was generated from the following files:

• /src/gui/embedded/qscreendriverfactory_qws.h
• /src/gui/embedded/qscreendriverfactory_qws.cpp