servo/components/layout/flow
Martin Robinson a0dd2c1beb
layout: Share styles to inline box children via SharedInlineStyles (#36896)
`TextRun`s use their parent style to render. Previously, these styles
were cloned and stored directly in the box tree `TextRun` and resulting
`TextFragment`s. This presents a problem for incremental layout.
Wrapping the style in another layer of shared ownership and mutability
will allow updating all `TextFragment`s during repaint-only incremental
layout by simply updating the box tree styles of the original text
parents.

This adds a new set of borrows when accessing text styles, but also
makes it so that during box tree block construction
`InlineFormattingContext`s are created lazily and now
`InlineFormattingContextBuilder::finish` consumes the builder, making
the API make a bit more sense. This should also improve performance of
box tree block construction slightly.

Testing: This should not change observable behavior and thus is covered
by existing WPT tests.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
2025-05-12 09:38:50 +00:00
..
inline layout: Share styles to inline box children via SharedInlineStyles (#36896) 2025-05-12 09:38:50 +00:00
construct.rs layout: Share styles to inline box children via SharedInlineStyles (#36896) 2025-05-12 09:38:50 +00:00
float.rs layout: Use ServoLayoutNode directly instead of a generic impl (#36876) 2025-05-06 14:27:51 +00:00
mod.rs layout: Share styles to inline box children via SharedInlineStyles (#36896) 2025-05-12 09:38:50 +00:00
root.rs layout: Share styles to inline box children via SharedInlineStyles (#36896) 2025-05-12 09:38:50 +00:00