Fix positioning of dynamically populated QToolButton::MenuButtonPopup's in screen corners

The existing code positioning the menu in
QToolButtonPrivate::popupTimerDone() had a clause checking
whether any receivers were connnected to QMenu::aboutToShow()
causing the sizeHint to be -1,-1 in that case (apparently
trying to accommodate menus populated in slots). In that
case, the checking for screen borders would not work, causing
the similar checks in QMenu::popup() to trigger, potentially
positioning the menu over the mouse.

To solve this dilemma, add a parameter taking a std::function
calulating the position of the menu from the sizeHint to
QMenuPrivate::exec()/popup() and invoke that in QMenuPrivate::popup()
after emitting QMenu::aboutToShow() when the sizeHint is known.

Fixes: QTBUG-78966
Change-Id: I180bd2dc7eadcaca6cadca13745ed4a2dd89e412
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

0 files changed, 0 insertions, 0 deletions