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style: More fine-grained viewport units invalidation

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This should speed up window resize significantly.

Differential Revision: https://phabricator.services.mozilla.com/D118878
This commit is contained in:
Emilio Cobos Álvarez 2023-05-22 10:01:09 +02:00 • committed by Oriol Brufau
parent 85b7a60a69
commit 25edb3c21b
6 changed files with 88 additions and 1 deletions
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7
components/style/invalidation/element/restyle_hints.rs
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@ -60,7 +60,12 @@ impl RestyleHint {
/// Returns whether this hint invalidates the element and all its
/// descendants.
pub fn contains_subtree(&self) -> bool {
self.contains(RestyleHint::RESTYLE_SELF | RestyleHint::RESTYLE_DESCENDANTS)
self.contains(Self::restyle_subtree())
}
/// Returns whether we'll recascade all of the descendants.
pub fn will_recascade_subtree(&self) -> bool {
self.contains_subtree() || self.contains(Self::recascade_subtree())
}
/// Returns whether we need to restyle this element.