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qwidgetbackingstore.cpp from 5.12.1

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This commit is contained in:
kleuter 2018-12-21 22:53:05 +01:00
parent 7d4c5a3a3d
commit 54152e1fc7
1 changed files with 8 additions and 13 deletions
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21
5.12.0/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp
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@ -101,6 +101,13 @@ void QWidgetBackingStore::qt_flush(QWidget *widget, const QRegion &region, QBack
if (tlw->testAttribute(Qt::WA_DontShowOnScreen) || widget->testAttribute(Qt::WA_DontShowOnScreen))
return;
// Foreign Windows do not have backing store content and must not be flushed
if (QWindow *widgetWindow = widget->windowHandle()) {
if (widgetWindow->type() == Qt::ForeignWindow)
return;
}
static bool fpsDebug = qEnvironmentVariableIntValue("QT_DEBUG_FPS");
if (fpsDebug) {
if (!widgetBackingStore->perfFrames++)
@ -1053,21 +1060,9 @@ static QPlatformTextureList *widgetTexturesFor(QWidget *tlw, QWidget *widget)
static bool switchableWidgetComposition =
QGuiApplicationPrivate::instance()->platformIntegration()
->hasCapability(QPlatformIntegration::SwitchableWidgetComposition);
if (!switchableWidgetComposition
// The Windows compositor handles fullscreen OpenGL window specially. Besides
// having trouble with popups, it also has issues with flip-flopping between
// OpenGL-based and normal flushing. Therefore, stick with GL for fullscreen
// windows (QTBUG-53515). Similary, translucent windows should not switch to
// layered native windows (QTBUG-54734).
#if defined(Q_OS_WIN) && !defined(Q_OS_WINRT) && !defined(Q_OS_WINCE)
|| tlw->windowState().testFlag(Qt::WindowFullScreen)
|| tlw->testAttribute(Qt::WA_TranslucentBackground)
#endif
)
{
if (!switchableWidgetComposition)
return qt_dummy_platformTextureList();
}
}
return 0;
}