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

Sergey Bylokhov Sergey.Bylokhov at oracle.com
Wed Oct 28 21:20:08 UTC 2015

On 06.10.15 9:15, Semyon Sadetsky wrote:
> Sorry. I meant it is not guaranteed to be sent by every WM.

     But fetch the data of 100 times also doesn't guarantee that we will 
get the necessary data. It will be better at least to try to check the 
specified atom for this(it seems it is supported by all our platfrom). 
For example on osx insets can be changed on the fly w/o notification, 
because of this we fetch the insets on each reshapeEvent and posts the 
necessary message up to hierarchy.

> On 10/6/2015 9:03 AM, Semyon Sadetsky wrote:
>> In is extended event. In does not guaranteed to be sent by any WM.
>> On 10/5/2015 6:12 PM, Sergey Bylokhov wrote:
>>> 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 revalidated?
>>> 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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