* scrollLeft/scrollTop returned values of parent or even document root
Only the scroll of the node itself is returned. Otherwise 0.0.
* Scrolling via script had set viewport.
This resulted in other nodes appearing scrolled.
Now scroll_offsets are updated with correct node id.
These bugs caused other odd behavior like both body and
document.documentElement being scrolled or the view for scrolled
elements jumping.
Also try scrolling this [example page](https://pyfisch.org/stuff/scrolltest.html) in servo with and without this change.
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handles the case where `GlobalScope::current` calls `CurrentGlobalOrNull` and the result is null
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`parse_node_data` does not need to store `data` and `target`, they can automatically be passed as parameters to the parser operation (`ParseOperation::CreatePI`) that we already create to be processed.
Also, this frees up `process_op` from depending on the sink's `parse_node_data` field, which will later allow for the sink to exist on the parser thread separately.
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This patch fixes a couple of issues in the compositor:
1) Remove the delayed composition code. Previously, this would schedule
a composite for 12ms in the future. This doesn't really make any sense
with WR. There's no point in doing a composite unless WR has provided
a new frame to be drawn. This fixes issues in several benchmarks where
we were doing multiple composite / renders per rAF, which is a waste
of CPU time. This *does* make the framerate slower in some cases (such
as a slow rAF callback) but it's more correct - otherwise we were just
compositing the same frame multiple times for no real benefit.
2) Inform the window of the current animation state of the compositor.
Specifically, if an animation (or rAF) is currently active, the
window system switches to use event polling, and does not block on
the OS-level event loop. In the case of active animation, we just
assume that we want to be running as the vsync interval and not
blocking. This means the compositor thread only sleeps on vsync
during animation, which reduces OS scheduling and results in much
smoother animation.
Source-Repo: https://github.com/servo/servo
Source-Revision: 819a40bfb0fd2e1f4832fa3d773c266e9179ae21
Design: I realized having two different parsers for sync and async was wrong, because the API for both was fundamentally the same. All I needed to do was create another Tokenizer, because `ParseNode` ( representation for nodes which are yet to be created) is used by the TreeBuilder and the Sink, and the `Tokenizer` is the 'lowermost' type concerned with these two types.
Therefore, I created one and placed it in `async_html.rs`, and also created a new Sink which deals with `ParseNode`s. I changed the methods in ServoParser to take an `async` argument too, which decides which Tokenizer will be used. The Tokenizer isn't exactly *async* for now, but this PR separates action creation from execution, which allows the async behaviour to be implemented later. Right now, all actions are executed soon after they are created.
The Sink consists of two Hashmaps, `nodes`, which contains the actual nodes, with the key being their corresponding `ParseNode`'s id, and `parse_node_data`, which contains metadata about the nodes.
It's still a bit rough, (I can't figure out how to deal with `complete_script` and `is_mathml_annotation_xml_integration_point`, along with some other parts I wrote in a hurry), but I believe the overall design is sound. I'd like to hear what you think about it.
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This addresses a longstanding source of intermittent test failures where the stderr and stdout outputs get interleaved and the test harness becomes confused.
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This is a rebase of #17325 with `[replace]` entries removed, a bunch more dependencies updated, and some more compile fixes. Original work by @Eijebong, thanks a lot!
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spec: https://html.spec.whatwg.org/multipage/#htmlconstructor
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Setting an image source asynchronously (e.g. using `setTimeout` or in the callback of an `XMLHttpRequest`) before `window.onload` fired would cause a panic due to a preexisting load blocker not being terminated before assigning a new one.
This PR fixes that and adds a test for it.
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- [x] `./mach build -d` does not report any errors (kinda, need webrender published and Cargo.toml fixed up)
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https://bugzilla.mozilla.org/show_bug.cgi?id=1369588
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Reviewed by bholley and emilo on the bugzilla bug.
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This requires https://github.com/servo/rust-cssparser/pull/143 for the final commit. There's no better way to split that work up, unfortunately, and it's extremely easy to bitrot. I would appreciate if we could expedite reviewing this work.
This is the work necessary to enable https://bugzilla.mozilla.org/show_bug.cgi?id=1352669. It makes sense to merge it separately because it's so much effort to keep it up to date with the ongoing Stylo work.
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Removed the special root browsing context from the constellation.
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Allow more than one brace per line when checking spec links in test-tidy.
We had problems caused by `if unsafe { ... } {`.
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This PR implements the plumbing for paint worklets:
* Adding CSS values for paint worklets.
* Implementing a skeleton for the `PaintWorkletGlobalScope` webidl.
* Implementing an executor for paint worklet tasks, and passing it from script to layout.
* Building the display list items for paint worklet images.
This PR does not implement registering or calling paint worklets in JS.
Before it merges, this PR needs a reftest added for basic paint worklet functionality.
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Introduces the pref `webgl.testing.context_creation_error`, to force creation of a new WebGLRenderingContext to fail.
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Implements https://html.spec.whatwg.org/multipage/#customelementregistry
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This file has become quite bloated lately. This commit deletes that file in
favor of a set of submodules.
The only noticeable change apart from code move, is converting deep_clone_foo
methods into a trait.
It also unifies logic related to different style rules in the same place.
There's some missing work, specially related to font-face and counter-style, but
I think this is worth landing in the meantime.
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r? @jdm
I ran some tests at random from the `navigating-across-documents` folder, and they are passing.
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@jdm I couldn't reproduce the crashes, but looking at the code, I can tell that if we hit the cache inside `fetch_image`, we go straight to `process_image_response`, so we're still in the same scope as that where the borrowing occurs in `prepare_image_request`. When there is no cache hit, `process_image_response` is executed as part of a task...
This should fix the issue, while retaining the original logic.
All tests in `the-img-element` are passing...
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Spec compliant implementation of the [update the image data algorithm](https://html.spec.whatwg.org/multipage/embedded-content.html#update-the-image-data).
Currently still a work in progress, the ['async src complete test`](https://github.com/servo/servo/blob/master/tests/wpt/web-platform-tests/html/semantics/embedded-content/the-img-element/img.complete.html#L33) is still passing as it was before, even though I switched to the new code, so I guess that's something.
@jdm I will be picking this up next weekend, I left a bunch of TODO and NOTES in the code, if you or someone else have time this week I would appreciate an initial scan and feedback.
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At the moment, a webdriver session stores a `pipeline_id`s, which causes a mismatch with the spec, which asks a session to store a browsing context and a top-level browsing context. This PR fixes this mismatch.
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Implements #16705. window.closed should evaluate to true if BrowsingContext is discarded
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Required for https://github.com/servo/servo/issues/16556
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remove unused style::restyle_hints::RestyleReplacements from line 134
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Added a `TopLevelBrowsingContextId` type, which is a subtype of `BrowsingContextId` that only refers to top-level browsing contexts.
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Implement MutationObserver childList mutations
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@jdm @KiChjang First pass at using microtasks to await a stable state. I ran into all sorts of problems to get it to compile, I think it's mainly related to the fact that the microtasks are stored in a `Vec`, which meant the `Runnalbe.handler(self: Box<Self>)` couldn't be called while iterating over the Vec... It compiles now although I haven't run any tests. I'm assuming I'm missing something fundamental and was hoping my changes would highlight the problems I run into, and you had a better idea of how to implement this... Perhaps we shouldn't pass a `Runnable` to `await_stable_state` at all?
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This enum type used to contain the result of parsing one CSS source declaration (`name: value;`) and expanding shorthands. Enum types are as big as the biggest of their variant (plus discriminant), which was quite big because some shorthands expand to many longhand properties. This type was returned through many functions and methods, wrapped and rewrapped in `Result` with different error types. This presumably caused significant `memmove` traffic.
Instead, we now allocate an `ArrayVec` on the stack and pass `&mut` references to it for various functions to push into it. This type is also very big, but we never move it.
We still use an intermediate data structure because we sometimes decide after shorthand expansion that a declaration is invalid after all and that we’re gonna drop it. Only later do we push to a `PropertyDeclarationBlock`, with an entire `ArrayVec` or nothing.
In future work we can try to avoid a large stack-allocated array, and instead writing directly to the heap allocation of the `Vec` inside `PropertyDeclarationBlock`. However this is tricky: we need to preserve this "all or nothing" aspect of parsing one source declaration, and at the same time we want to make it as little error-prone as possible for the various call sites. `PropertyDeclarationBlock` curently does property deduplication incrementally: as each `PropertyDeclaration` is pushed, we check if an existing declaration of the same property exists and if so overwrite it. To get rid of the stack allocated array we’d need to somehow deduplicate separately after pushing multiple `PropertyDeclaration`.
Source-Repo: https://github.com/servo/servo
Source-Revision: 60682cf81fe19a82c73dd98ba4c1eebc1dbbfcac
