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Prefetch img and scripts during parsing

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This commit is contained in:
Alan Jeffrey 2019-09-05 11:57:21 -05:00
parent 5bcb1b579c
commit 1aeb97b281
8 changed files with 351 additions and 45 deletions
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21
components/script/dom/htmlimageelement.rs
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@ -53,6 +53,7 @@ use html5ever::{LocalName, Prefix};
use ipc_channel::ipc;
use ipc_channel::router::ROUTER;
use mime::{self, Mime};
use msg::constellation_msg::PipelineId;
use net_traits::image::base::{Image, ImageMetadata};
use net_traits::image_cache::UsePlaceholder;
use net_traits::image_cache::{CanRequestImages, ImageCache, ImageOrMetadataAvailable};
@ -61,6 +62,7 @@ use net_traits::request::RequestBuilder;
use net_traits::{FetchMetadata, FetchResponseListener, FetchResponseMsg, NetworkError};
use net_traits::{ResourceFetchTiming, ResourceTimingType};
use num_traits::ToPrimitive;
use servo_url::origin::ImmutableOrigin;
use servo_url::origin::MutableOrigin;
use servo_url::ServoUrl;
use std::cell::{Cell, RefMut};
@ -261,6 +263,17 @@ impl PreInvoke for ImageContext {
}
}
// This function is also used to prefetch an image in `script::dom::servoparser::prefetch`.
pub(crate) fn image_fetch_request(
img_url: ServoUrl,
origin: ImmutableOrigin,
pipeline_id: PipelineId,
) -> RequestBuilder {
RequestBuilder::new(img_url)
.origin(origin)
.pipeline_id(Some(pipeline_id))
}
impl HTMLImageElement {
/// Update the current image with a valid URL.
fn fetch_image(&self, img_url: &ServoUrl) {
@ -326,9 +339,11 @@ impl HTMLImageElement {
}),
);
let request = RequestBuilder::new(img_url.clone())
.origin(document.origin().immutable().clone())
.pipeline_id(Some(document.global().pipeline_id()));
let request = image_fetch_request(
img_url.clone(),
document.origin().immutable().clone(),
document.global().pipeline_id(),
);
// This is a background load because the load blocker already fulfills the
// purpose of delaying the document's load event.