RESOLVED FIXED307919
AX: When servicing a hit test, preemptively hit-test nearby points and cache the results to make future AT hit-tests faster 
https://bugs.webkit.org/show_bug.cgi?id=307919
Summary AX: When servicing a hit test, preemptively hit-test nearby points and cache ...
Tyler Wilcock
Reported 2026-02-14 15:33:39 PST
Certain assistive technologies (like HoverText) send very rapid hit-tests that are all close to each other (think of a mouse moving across the screen). Use this knowledge to build an optimization where when we get a hit-test from an AT, we asynchronously also hit test nearby points and cache the results, meaning we can instantly serve follow-up AT hit-tests for nearby points.
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Radar WebKit Bug Importer
Comment 1 2026-02-14 15:33:44 PST
<rdar://problem/170401294>
Tyler Wilcock
Comment 2 2026-02-14 15:38:52 PST
Pull request: https://github.com/WebKit/WebKit/pull/58735
EWS
Comment 3 2026-02-17 21:17:57 PST
Committed 307742@main (9014e0de0c56): <https://commits.webkit.org/307742@main> Reviewed commits have been landed. Closing PR #58735 and removing active labels.
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