Cocoa: Make QScreen::topLevelAt() work correctly

The QPlatformScreen::topLevelAt() default implementation
is flawed in that it does not check z-ordering but
simply returns the first window in the window list
that contains the test point.

Add QCocoaScreen::topLevelAt(). Use [NSApp orderedWindows]
to iterate through the window list in z order. Add
a NSWindow->QCococaWindow mapping hash to QCocoaIntegration
for getting the corresponding QWindow once a NSWindow
is found.

Task-number: QTBUG-37597
Change-Id: I7af70163a32528cb56f8d6caa037b98f580ee191
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>

0 files changed, 0 insertions, 0 deletions