On Thu, 3 Sep 2026 22:10:39 GMT, Michael Strauß <[email protected]> wrote:

>> For the longest time, I've had the impression that scrolling in JavaFX is 
>> not quite right. Looking at it, that suspicion is quickly confirmed: the 
>> scroll distance is incorrectly divided by the render scale.
>> 
>> To reproduce, open MonkeyTester and scroll a ListView. On Windows 11 with a 
>> system setting of 3 lines per detent, the ListView scrolls exactly 3 lines 
>> at 100% render scale, 2 lines at 150% render scale, and 1.5 lines at 200% 
>> render scale.
>> 
>> The render scale conversion was introduced in 2015 when High-DPI support was 
>> added. However, mouse wheel rotation is a dimensionless number, it shouldn't 
>> be scaled at all. A line is a line, no matter the render scale.
>> 
>> ---------
>> - [x] I confirm that I make this contribution in accordance with the 
>> [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai).
>
> Michael Strauß has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   javadocs

Looks good on Windows as well.

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

Marked as reviewed by lkostyra (Reviewer).

PR Review: https://git.openjdk.org/jfx/pull/2282#pullrequestreview-5110879504

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