macOS: fix drawing of pushbuttons of non-standard size

Cocoa renders the bevel of a push button always in the default height of
32 pixels. We handled the case that the button is larger than that by
switching to "squared" mode, but buttons that are smaller than that got
rendered incorrectly, with the bevel being clipped.

Fix this by always rendering buttons in "squared" mode when the height
of the widget is not the same as the standard. Adjust the default height
for "mini" push buttons based on visual testing. Make the equivalent
adjustment to the focus frame logic and general positioning so that
buttons and frames are centered compared to other controls.

As a drive-by, get rid of expensive QObject::inherits calls, and replace
with qobject_cast. The headers for all the relevant widget types are
already included.

Fixes: QTBUG-85972
Pick-to: 6.2
Change-Id: I4ad66fac2313fbee385c1eadcc243f69c9cace70
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>

0 files changed, 0 insertions, 0 deletions