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Remove legacy layout (layout 2013) (#35943)

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We were already not compiling it and not running tests on it by default.
So it's simpler to just completely remove it.

Signed-off-by: Oriol Brufau <obrufau@igalia.com>
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Oriol Brufau 2025-03-13 08:26:57 +01:00 • committed by GitHub
parent f93006af95
commit 7594dc6991
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17224 changed files with 23 additions and 1584835 deletions
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152
components/layout/context.rs
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@ -1,152 +0,0 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
//! Data needed by layout.
use std::collections::HashMap;
use std::hash::BuildHasherDefault;
use std::sync::{Arc, Mutex};
use std::thread;
use base::id::PipelineId;
use fnv::FnvHasher;
use fonts::FontContext;
use net_traits::image_cache::{
ImageCache, ImageCacheResult, ImageOrMetadataAvailable, UsePlaceholder,
};
use parking_lot::RwLock;
use script_layout_interface::{PendingImage, PendingImageState};
use script_traits::Painter;
use servo_url::{ImmutableOrigin, ServoUrl};
use style::context::{RegisteredSpeculativePainter, SharedStyleContext};
use stylo_atoms::Atom;
use crate::display_list::items::{OpaqueNode, WebRenderImageInfo};
type WebrenderImageCache =
HashMap<(ServoUrl, UsePlaceholder), WebRenderImageInfo, BuildHasherDefault<FnvHasher>>;
/// Layout information shared among all workers. This must be thread-safe.
pub struct LayoutContext<'a> {
/// The pipeline id of this LayoutContext.
pub id: PipelineId,
/// The origin of this layout context.
pub origin: ImmutableOrigin,
/// Bits shared by the layout and style system.
pub style_context: SharedStyleContext<'a>,
/// Reference to the script thread image cache.
pub image_cache: Arc<dyn ImageCache>,
/// A FontContext to be used during layout.
pub font_context: Arc<FontContext>,
/// A cache of WebRender image info.
pub webrender_image_cache: Arc<RwLock<WebrenderImageCache>>,
/// Paint worklets
pub registered_painters: &'a dyn RegisteredPainters,
/// A list of in-progress image loads to be shared with the script thread.
pub pending_images: Mutex<Vec<PendingImage>>,
}
impl Drop for LayoutContext<'_> {
fn drop(&mut self) {
if !thread::panicking() {
assert!(self.pending_images.lock().unwrap().is_empty());
}
}
}
impl LayoutContext<'_> {
#[inline(always)]
pub fn shared_context(&self) -> &SharedStyleContext {
&self.style_context
}
pub fn get_or_request_image_or_meta(
&self,
node: OpaqueNode,
url: ServoUrl,
use_placeholder: UsePlaceholder,
) -> Option<ImageOrMetadataAvailable> {
// Check for available image or start tracking.
let cache_result = self.image_cache.get_cached_image_status(
url.clone(),
self.origin.clone(),
None,
use_placeholder,
);
match cache_result {
ImageCacheResult::Available(img_or_meta) => Some(img_or_meta),
// Image has been requested, is still pending. Return no image for this paint loop.
// When the image loads it will trigger a reflow and/or repaint.
ImageCacheResult::Pending(id) => {
let image = PendingImage {
state: PendingImageState::PendingResponse,
node: node.into(),
id,
origin: self.origin.clone(),
};
self.pending_images.lock().unwrap().push(image);
None
},
// Not yet requested - request image or metadata from the cache
ImageCacheResult::ReadyForRequest(id) => {
let image = PendingImage {
state: PendingImageState::Unrequested(url),
node: node.into(),
id,
origin: self.origin.clone(),
};
self.pending_images.lock().unwrap().push(image);
None
},
// Image failed to load, so just return nothing
ImageCacheResult::LoadError => None,
}
}
pub fn get_webrender_image_for_url(
&self,
node: OpaqueNode,
url: ServoUrl,
use_placeholder: UsePlaceholder,
) -> Option<WebRenderImageInfo> {
if let Some(existing_webrender_image) = self
.webrender_image_cache
.read()
.get(&(url.clone(), use_placeholder))
{
return Some(*existing_webrender_image);
}
match self.get_or_request_image_or_meta(node, url.clone(), use_placeholder) {
Some(ImageOrMetadataAvailable::ImageAvailable { image, .. }) => {
let image_info = WebRenderImageInfo::from_image(&image);
if image_info.key.is_none() {
Some(image_info)
} else {
let mut webrender_image_cache = self.webrender_image_cache.write();
webrender_image_cache.insert((url, use_placeholder), image_info);
Some(image_info)
}
},
None | Some(ImageOrMetadataAvailable::MetadataAvailable(..)) => None,
}
}
}
/// A registered painter
pub trait RegisteredPainter: RegisteredSpeculativePainter + Painter {}
/// A set of registered painters
pub trait RegisteredPainters: Sync {
/// Look up a painter
fn get(&self, name: &Atom) -> Option<&dyn RegisteredPainter>;
}