Andreas Kling 6d7a2f5cc9 LibWeb: Prune old paintable pointers from layout tree after relayout ...

When text paintables shift around in the tree due to line wrapping,
we may end up in a situation where some text node does not generate
a paintable (due to being all whitespace, for example), even though
in the previous layout pass, it *did* generate a paintable.

To prevent holding on to old paintables in such cases, we now do a
pass in LayoutState::commit() where we explicitly detach all old
paintables from the layout tree.

2023-08-29 17:05:16 +02:00

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