Summary:
Mouse actions like wheel and double click were restricted to the titleBar
area. This made the top most pixel non-interactive as it's not part of the
titleBarArea.
This change makes the complete titlebarPosition interactive. That is it
includes for a "normal" (top) setup also the TopLeft/Top/Right section.
Thus the top most pixel can be double clicked, mouse wheeled, etc.
For the Wayland case the test case is adjusted.
BUG: 362860
FIXED-IN: 5.7.0
Reviewers: #plasma
Subscribers: plasma-devel
Projects: #plasma
Differential Revision: https://phabricator.kde.org/D1596
First test case is whether wheel events are forwarded correctly.
From the code it seems to me like up/down is inversed. Needs manual
testing.
As this requires working decorations it's possible that this test
will fail on build.kde.org.