1 files changed, 14 insertions, 16 deletions
diff --git a/src/widgets/widgets/qmenu.cpp b/src/widgets/widgets/qmenu.cpp
index 7dc67c8efe..14964a696d 100644
--- a/src/widgets/widgets/qmenu.cpp
+++ b/src/widgets/widgets/qmenu.cpp
@@ -78,6 +78,7 @@
 #include <private/qguiapplication_p.h>
 #include <qpa/qplatformtheme.h>
 #include <private/qdesktopwidget_p.h>
+#include <private/qstyle_p.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -307,29 +308,26 @@ int QMenuPrivate::scrollerHeight() const
     return qMax(QApplication::globalStrut().height(), q->style()->pixelMetric(QStyle::PM_MenuScrollerHeight, 0, q));
 }
 
-//Windows and KDE allow menus to cover the taskbar, while GNOME and Mac don't
+// Windows and KDE allow menus to cover the taskbar, while GNOME and macOS
+// don't. Torn-off menus are again different
+inline bool QMenuPrivate::useFullScreenForPopup() const
+{
+    return !tornoff && QStylePrivate::useFullScreenForPopup();
+}
+
 QRect QMenuPrivate::popupGeometry() const
 {
     Q_Q(const QMenu);
-    if (!tornoff && // Torn-off menus are different
-            QGuiApplicationPrivate::platformTheme() &&
-            QGuiApplicationPrivate::platformTheme()->themeHint(QPlatformTheme::UseFullScreenForPopupMenu).toBool()) {
-        return QDesktopWidgetPrivate::screenGeometry(q);
-    } else {
-        return QDesktopWidgetPrivate::availableGeometry(q);
-    }
+    return useFullScreenForPopup()
+        ? QDesktopWidgetPrivate::screenGeometry(q)
+        : QDesktopWidgetPrivate::availableGeometry(q);
 }
 
-//Windows and KDE allow menus to cover the taskbar, while GNOME and Mac don't
 QRect QMenuPrivate::popupGeometry(int screen) const
 {
-    if (!tornoff && // Torn-off menus are different
-            QGuiApplicationPrivate::platformTheme() &&
-            QGuiApplicationPrivate::platformTheme()->themeHint(QPlatformTheme::UseFullScreenForPopupMenu).toBool()) {
-        return QDesktopWidgetPrivate::screenGeometry(screen);
-    } else {
-        return QDesktopWidgetPrivate::availableGeometry(screen);
-    }
+    return useFullScreenForPopup()
+        ? QDesktopWidgetPrivate::screenGeometry(screen)
+        : QDesktopWidgetPrivate::availableGeometry(screen);
 }
 
 QVector<QPointer<QWidget> > QMenuPrivate::calcCausedStack() const