On Thu, 30 Jul 2026 22:49:30 GMT, Marius Hanl <[email protected]> wrote:

>> Another much better try to fix the issue.
>> I recommend to read: https://github.com/openjdk/jfx/pull/2201 first. All 
>> tests from there are included. 
>> I added some new ones that succeed before and after, a first step for more 
>> CSS tests as discussed in: 
>> https://github.com/openjdk/jfx/pull/2218#issuecomment-5094495306
>> 
>> My new idea is now the following constraint, which I think is also a much 
>> better approach:
>> - A `CssStyleHelper` always has a correct `firstStyleableAncestor`. We can 
>> at any time trust and rely on it.
>> - We will also reuse the existing loop for the `isUserSetFont` check to 
>> improve the performance a bit
>> 
>> Implementation:
>> - A new private `CssHelperState` is introduced on `Node`. We need to know 
>> whether we can trust the `styleHelper`.
>> - Not every `Node` has a `styleHelper` - it is only created when needed, so 
>> we can not attach the flag in there
>> 
>> This fixes the issue while a deep (optionally unstyled) scene graph has no 
>> performance penality.
>> The approach is similar than my previous PR, but more smart. And with the 
>> set constraint mentioned above.
>> 
>> ---
>> 
>> I do think we can improve the `CssStyleHelper` more. But for another day. 
>> Maybe at one point, with more tests and when all requirements are clear, we 
>> can find a way without `CssHelperState` and without creating an empty 
>> `CssStyleHelper` just to hold trigger states (because of that, we need to 
>> check `styleHelper.cacheContainer != null` a lot of times).
>> 
>> 
>> ---------
>> - [x] I confirm that I make this contribution in accordance with the 
>> [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai).
>
> Marius Hanl has updated the pull request with a new target base due to a 
> merge or a rebase. The pull request now contains two commits:
> 
>  - Merge branch 'master' of https://github.com/openjdk/jfx into 
> 8388277-REDO]-Looked-up-color-fails-for--fx-background-color-in-JavaFX-CSS-file
>    
>    # Conflicts:
>    #  
> modules/javafx.graphics/src/test/java/test/javafx/scene/CssStyleHelperTest.java
>  - 8388277: [REDO] Looked-up color fails for -fx-background-color in JavaFX 
> CSS file

modules/javafx.graphics/src/test/java/test/javafx/scene/CssStyleHelperTest.java 
line 1619:

> 1617:         return chain;
> 1618:     }
> 1619: 

toDataUrl: similar to 
https://github.com/openjdk/jfx/pull/2236#discussion_r3751856321

perhaps we could create a Utils class with this method.  no need to replicate 
utility code all over the place.

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

PR Review Comment: https://git.openjdk.org/jfx/pull/2225#discussion_r3752675833

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