On Mon, 13 Mar 2023 14:58:53 GMT, Lukasz Kostyra <lkost...@openjdk.org> wrote:

>> Issue happened during setting a new Scene - updating a new View was done 
>> while the Window reference it kept was null. This caused it to default 
>> scaling values to 1.0f (or 100%) while processing a resize notification, 
>> which for high DPI screens with scaling different than 100% caused UI issues.
>> 
>> Resolved by splitting `_setView()` native call into two parts - first one 
>> sets the view, then back in JVM side we set a correct Window reference, then 
>> we trigger the notification. It has to be triggered from native side, 
>> because Windows backend of Glass sends back new width/height pulled from 
>> WinAPI `::GetClientRect()` call.
>> 
>> In process of working on this issue I also found another scenario causing 
>> the same problem - calling `Stage.setScene()` after `Stage.show()`. The 
>> patch fixed that case as well.
>> 
>> Added a system test which is supposed to check for above issues. I didn't 
>> limit it to run only on platforms with UI scaling enabled because it also 
>> serves as a good sanity check in case there are some other changes to code 
>> that might move/scale the UI unwantingly. I tested this patch both on macOS 
>> Ventura and Windows 11, with `d9c091f` all tests pass while without 
>> `d9c091f` on Windows tests `testShowAndSetScene` and `testSecondSetScene` 
>> fail as expected.
>
> Lukasz Kostyra has updated the pull request incrementally with two additional 
> commits since the last revision:
> 
>  - SetSceneScalingTest: Address review issues
>    
>    - Calculate robot.mouseMove coords based on Stage/Scene position
>    - Use stage.setOnShown() instead of addEventListener()
>  - GlassWindow: Fix Copy-Paste's Error with unnecessary View variable

Marked as reviewed by arapte (Reviewer).

-------------

PR: https://git.openjdk.org/jfx/pull/1054

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