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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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12
components/layout/replaced.rs
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@ -13,10 +13,12 @@ use euclid::{Scale, Size2D};
use malloc_size_of_derive::MallocSizeOf;
use net_traits::image_cache::{ImageOrMetadataAvailable, UsePlaceholder};
use pixels::Image;
use script::layout_dom::ServoLayoutNode;
use script_layout_interface::IFrameSize;
use servo_arc::Arc as ServoArc;
use style::Zero;
use style::computed_values::object_fit::T as ObjectFit;
use style::dom::TNode;
use style::logical_geometry::{Direction, WritingMode};
use style::properties::ComputedValues;
use style::servo::url::ComputedUrl;
@ -120,7 +122,7 @@ pub(crate) enum ReplacedContentKind {
}
impl ReplacedContents {
pub fn for_element<'dom>(element: impl NodeExt<'dom>, context: &LayoutContext) -> Option<Self> {
pub fn for_element(element: ServoLayoutNode<'_>, context: &LayoutContext) -> Option<Self> {
if let Some(ref data_attribute_string) = element.as_typeless_object_with_data_attribute() {
if let Some(url) = try_to_parse_image_data_url(data_attribute_string) {
return Self::from_image_url(
@ -184,8 +186,8 @@ impl ReplacedContents {
})
}
pub fn from_image_url<'dom>(
element: impl NodeExt<'dom>,
pub fn from_image_url(
element: ServoLayoutNode<'_>,
context: &LayoutContext,
image_url: &ComputedUrl,
) -> Option<Self> {
@ -213,8 +215,8 @@ impl ReplacedContents {
None
}
pub fn from_image<'dom>(
element: impl NodeExt<'dom>,
pub fn from_image(
element: ServoLayoutNode<'_>,
context: &LayoutContext,
image: &ComputedImage,
) -> Option<Self> {