On Sun, 31 May 2026 13:47:54 GMT, Thiago Milczarek Sayao <[email protected]> 
wrote:

>> This is a continuation to 
>> [JDK-8236651](https://bugs.openjdk.org/browse/JDK-8236651) and it aims to 
>> stabilize the linux glass gtk backend.
>> 
>> It refactors the Glass GTK implementation with a primary focus on window 
>> sizing, positioning, and state management, addressing a number of 
>> long-standing issues.
>> 
>> Previously, three separate context classes existed, two of which were used 
>> for Java Web Start and Applets. These have been unified, as they are no 
>> longer required.
>> 
>> Additional tests have been introduced to improve coverage. Some tests 
>> produced different results depending on the StageStyle, so they have been 
>> converted to use `@ParameterizedTest` to exercise multiple styles.
>> 
>> Although the primary focus is XWayland, the changes have also been verified 
>> to work correctly on Xorg.
>> 
>> This replaces #1789. It removes the use of GdkWindow in favor of GtkWindow, 
>> reducing risk and simplifying the review process while preserving the same 
>> set of bug fixes. Additionally, #2025 requires a `GtkWindow` to be used when 
>> setting the parent of the file chooser dialog.
>> 
>> java -Djavafx.enablePreview=true -Djdk.gtk.verbose=true 
>> -Dglass.gtk.logCategories=size,lifecycle  -Dprism.order=sw @build/run.args 
>> tests/manual/stage/TestStage.java 
>> 
>> To show debug messages,  build with `-PCONF=DebugNative`  and run with 
>> `-Djdk.gtk.verbose=true`. Log categories can be passed with 
>> `-Dglass.gtk.logCategories=CATEGORY` 
>> 
>> `CATEGORY` can be one or more of:
>> - all
>> - size
>> - position
>> - focus
>> - state
>> - lifecycle
>> - input
>> - dialog
>> 
>> Multiple categories can be specified by separating them with commas (e.g. 
>> size,focus,input).
>> 
>> A manual test is provided:
>> `java @build/run.args tests/manual/stage/TestStage.java`
>> 
>> When a window property is set, it is reported immediately. However, once it 
>> reaches the native Glass layer, it may be adjusted or rejected, causing the 
>> property to be updated again. Introducing a delay helps ensure the final 
>> state has been applied before it is verified.
>> 
>> ---------
>> - [x] I confirm that I make this contribution in accordance with the 
>> [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai).
>
> Thiago Milczarek Sayao has updated the pull request with a new target base 
> due to a merge or a rebase. The pull request now contains 39 commits:
> 
>  - Remove configurable delays
>  - Fix test
>  - Xorg fixes
>  - Revert "Rewrite WrongStageFocusWithApplicationModalityTest because it 
> fails intermittently"
>    
>    This reverts commit c6b9dd745e5d762adb89a3b596e53b0d8a790d7f.
>  - Rewrite WrongStageFocusWithApplicationModalityTest because it fails 
> intermittently
>  - Use existing verbose flag for GTK
>  - Fix window size update
>  - StageOwnershipTest: Update Y_DELTA
>  - Copyright year
>  - Merge branch 'master' into 8354943_v2
>  - ... and 29 more: https://git.openjdk.org/jfx/compare/b690b3c4...68d684f9

All tests pass on Xorg and XWayland (primarily on Ubuntu 24.04). The new tests 
were also validated on macOS Tahoe. Additionally, extensive manual testing was 
conducted.

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

PR Comment: https://git.openjdk.org/jfx/pull/2139#issuecomment-4586888672

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