QWindowSurface *QGLGraphicsSystem::createWindowSurface(QWidget *widget) const
{
#ifdef Q_WS_WIN
// On Windows the QGLWindowSurface class can't handle
// drop shadows and native effects, e.g. fading a menu in/out using
// top level window opacity.
if (widget->windowType() == Qt::Popup)
return new QRasterWindowSurface(widget);
#endif
#if defined(Q_WS_X11) && !defined(QT_NO_EGL)
if (m_useX11GL && QX11GLPixmapData::hasX11GLPixmaps()) {
// If the widget is a QGraphicsView which will be re-drawing the entire
// scene each frame anyway, we should use QGLWindowSurface as this may
// provide proper buffer flipping, which should be faster than QX11GL's
// blitting approach:
QGraphicsView* qgv = qobject_cast<QGraphicsView*>(widget);
if (qgv && qgv->viewportUpdateMode() == QGraphicsView::FullViewportUpdate)
return new QGLWindowSurface(widget);
else
return new QX11GLWindowSurface(widget);
}
#endif
#if defined(Q_OS_SYMBIAN)
if (!QApplicationPrivate::instance()->useTranslucentEGLSurfaces) {
QWidgetPrivate *d = qt_widget_private(widget);
if (!d->isOpaque && widget->testAttribute(Qt::WA_TranslucentBackground))
return d->createDefaultWindowSurface_sys();
}
#endif
return new QGLWindowSurface(widget);
}
QWindowSurface *QVGGraphicsSystem::createWindowSurface(QWidget *widget) const
{
#if defined(Q_OS_SYMBIAN)
if (!QApplicationPrivate::instance()->useTranslucentEGLSurfaces) {
QWidgetPrivate *d = qt_widget_private(widget);
if (!d->isOpaque && widget->testAttribute(Qt::WA_TranslucentBackground))
return d->createDefaultWindowSurface_sys();
}
#endif
return new QVGWindowSurface(widget);
}
