Andreas Kling 7bc7e80042 LibWeb: Only invalidate affected elements when @font-face font loads ...

Previously, when a @font-face font finished loading, we would clear the
entire computed font cache and invalidate style for the whole document.

This was overly conservative since most elements don't use the newly
loaded font. We now take a targeted approach inspired by Firefox:

1. Only clear cache entries that reference the loaded font family
2. Walk the DOM tree (including shadow trees) and only invalidate
   elements whose font-family property (or pseudo-elements' font-family)
   actually references the loaded font

This significantly reduces style invalidation work on pages with many
elements but only some using custom fonts.

2026-01-26 12:40:36 +01:00

28 KiB

Raw Blame History

View Raw