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layout: Implement support for image-set() notation (#36210)

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Signed-off-by: Chocolate Pie <106949016+chocolate-pie@users.noreply.github.com>
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chocolate-pie 2025-03-29 22:20:16 +09:00 • committed by GitHub
parent 40133ce29a
commit 987716ca4b
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27 changed files with 61 additions and 124 deletions
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43
components/layout_2020/context.rs
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@ -12,11 +12,12 @@ use net_traits::image_cache::{
ImageCache, ImageCacheResult, ImageOrMetadataAvailable, UsePlaceholder,
};
use parking_lot::{Mutex, RwLock};
use pixels::Image;
use pixels::Image as PixelImage;
use script_layout_interface::{IFrameSizes, ImageAnimationState, PendingImage, PendingImageState};
use servo_url::{ImmutableOrigin, ServoUrl};
use style::context::SharedStyleContext;
use style::dom::OpaqueNode;
use style::values::computed::image::{Gradient, Image};
use crate::display_list::WebRenderImageInfo;
@ -46,6 +47,11 @@ pub struct LayoutContext<'a> {
pub node_image_animation_map: Arc<RwLock<FxHashMap<OpaqueNode, ImageAnimationState>>>,
}
pub enum ResolvedImage<'a> {
Gradient(&'a Gradient),
Image(WebRenderImageInfo),
}
impl Drop for LayoutContext<'_> {
fn drop(&mut self) {
if !std::thread::panicking() {
@ -104,7 +110,7 @@ impl LayoutContext<'_> {
}
}
pub fn handle_animated_image(&self, node: OpaqueNode, image: Arc<Image>) {
pub fn handle_animated_image(&self, node: OpaqueNode, image: Arc<PixelImage>) {
let mut store = self.node_image_animation_map.write();
// 1. first check whether node previously being track for animated image.
@ -124,7 +130,7 @@ impl LayoutContext<'_> {
}
}
pub fn get_webrender_image_for_url(
fn get_webrender_image_for_url(
&self,
node: OpaqueNode,
url: ServoUrl,
@ -157,4 +163,35 @@ impl LayoutContext<'_> {
None | Some(ImageOrMetadataAvailable::MetadataAvailable(..)) => None,
}
}
pub fn resolve_image<'a>(
&self,
node: Option<OpaqueNode>,
image: &'a Image,
) -> Option<ResolvedImage<'a>> {
match image {
// TODO: Add support for PaintWorklet and CrossFade rendering.
Image::None | Image::CrossFade(_) | Image::PaintWorklet(_) => None,
Image::Gradient(gradient) => Some(ResolvedImage::Gradient(gradient)),
Image::Url(image_url) => {
// FIXME: images won’t always have in intrinsic width or
// height when support for SVG is added, or a WebRender
// `ImageKey`, for that matter.
//
// FIXME: It feels like this should take into account the pseudo
// element and not just the node.
let image_url = image_url.url()?;
let webrender_info = self.get_webrender_image_for_url(
node?,
image_url.clone().into(),
UsePlaceholder::No,
)?;
Some(ResolvedImage::Image(webrender_info))
},
Image::ImageSet(image_set) => image_set
.items
.get(image_set.selected_index)
.and_then(|image| self.resolve_image(node, &image.image)),
}
}
}