<AWT Dev> <Awt Dev> [9] Review Request for 8036915: setLocationRelativeTo stopped working in Ubuntu 13.10 (Unity)

Sergey Bylokhov Sergey.Bylokhov at oracle.com
Mon Oct 5 15:12:54 UTC 2015

Why we cannot treat such a XA_NET_FRAME_EXTENTS as a ConfigureNotify in 
which only insets are changed, and the window bounds/insets should be 

On 05.10.15 14:56, Semyon Sadetsky wrote:
> Hello,
> Please review fix for JDK9:
> bug: https://bugs.openjdk.java.net/browse/JDK-8036915
> webrev: http://cr.openjdk.java.net/~ssadetsky/8036915/webrev.00/
> The test scenario attached to the jira contains potential errors because
> Componet.getLocation() won't return the location at any moment of time.
> Anyway a window location issue exists in Unity. The root cause is that
> the real insets sent with the XA_NET_FRAME_EXTENTS event can be
> overridden by the "guessed" insets which are zero on Unity. So the
> returned location is increased by real insets while the real window
> location is correct.
> Yet another issue I found in Unity is a window size issue which is also
> caused by the frame insets detection. The Unity WM doesn't provide the
> frame insets immediately and XA_NET_FRAME_EXTENTS event may come after
> the ConfigureNotify event for the frame.
> The solution proposes an adaptation of the existing frame insets request
> algorithm to the Unity WM so that makes it more stable.
> --Semyon

Best regards, Sergey.

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