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layout: Use ServoLayoutNode directly instead of a generic impl (#36876)

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This makes it so that layout is no longer generic on the node type,
depending directly on `script`'s `ServoLayoutNode`. In addition to
greatly simplifying layout, this is necessary because incremental layout
needs to be able to create pseudo-element styles without having a handle
on the original `impl LayoutNode`. We feel this is a reasonable
tradeoff.

Testing: No functional changes, so covered by existing WPT tests.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
This commit is contained in:
Martin Robinson 2025-05-06 16:27:51 +02:00 • committed by GitHub
parent 51b95a6246
commit d5e008fd6a
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16 changed files with 217 additions and 309 deletions
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16
components/layout/formatting_contexts.rs
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@ -4,12 +4,12 @@
use app_units::Au;
use malloc_size_of_derive::MallocSizeOf;
use script::layout_dom::ServoLayoutElement;
use servo_arc::Arc;
use style::properties::ComputedValues;
use style::selector_parser::PseudoElement;
use crate::context::LayoutContext;
use crate::dom::NodeExt;
use crate::dom_traversal::{Contents, NodeAndStyleInfo};
use crate::flexbox::FlexContainer;
use crate::flow::BlockFormattingContext;
@ -69,9 +69,9 @@ impl Baselines {
}
impl IndependentFormattingContext {
pub fn construct<'dom, Node: NodeExt<'dom>>(
pub fn construct(
context: &LayoutContext,
node_and_style_info: &NodeAndStyleInfo<Node>,
node_and_style_info: &NodeAndStyleInfo,
display_inside: DisplayInside,
contents: Contents,
propagated_data: PropagatedBoxTreeData,
@ -111,11 +111,11 @@ impl IndependentFormattingContext {
let table_grid_style = context
.shared_context()
.stylist
.style_for_anonymous::<Node::ConcreteElement>(
&context.shared_context().guards,
&PseudoElement::ServoTableGrid,
&node_and_style_info.style,
);
.style_for_anonymous::<ServoLayoutElement>(
&context.shared_context().guards,
&PseudoElement::ServoTableGrid,
&node_and_style_info.style,
);
base_fragment_info.flags.insert(FragmentFlags::DO_NOT_PAINT);
IndependentNonReplacedContents::Table(Table::construct(
context,