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3 commits

Author SHA1 Message Date
Andreas Kling
b14c6eaef3 LibWeb: Let paintables cache their containing block and absolute rect
The absolute rect of a paintable is somewhat expensive to compute. This
is because all coordinates are relative to the nearest containing block,
so we have to traverse the containing block chain and apply each offset
to get the final rect.

Paintables will never move between containing blocks, nor will their
absolute rect change. If anything changes, we'll simpl make a new
paintable and replace the old one.

Take advantage of this by caching the containing block and absolute rect
after first access.
2022-03-12 00:39:31 +01:00
Andreas Kling
ed84fbce47 LibWeb: Make Paintable ref-counted
This will allow us to use a protective NonnullRefPtr to keep paintables
alive while running arbitrary JavaScript in response to events.
2022-03-11 00:21:49 +01:00
Andreas Kling
aae356baf1 LibWeb: Port inline elements to the new Paintable system
This patch adds InlinePaintable which corresponds to Layout::InlineNode.
2022-03-11 00:21:49 +01:00