RFR: 8338751: ConfigureNotify behavior has changed in KWin 6.2

[Vlad Zahorodnii]

On Thu, 10 Oct 2024 11:50:52 GMT, Vlad Zahorodnii <duke at openjdk.org> wrote:

> Prior to 6.2, kwin used to always send synthetic ConfigureNotify events regardless whether a real ConfigureNotify event is going to be sent. It used to do it because of some bugs in GTK2.
> 
> In 6.2, that workaround was dropped (it was needed to fix other issues during interactive resize) so kwin adheres to ICCCM 4.1.5 now.
> 
> Unfortunately, it seems like JDK relies on kwin always sending synthetic configure notify events, which is no longer the case.
> 
> This change makes AWT use the TranslateCoordinates request when a real ConfigureNotify event is received and running kwin as the window manager. It should work as expected even with kwin < 6.2.

Speaking for kwin, I tested various combinations just to make sure that nothing major breaks and this patch can be safely backported to stable branches.

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PR Comment: https://git.openjdk.org/jdk/pull/21449#issuecomment-2415375672