Fix animation serialization 15398 pt2
Fixes animation serialization so that an animation shorthand is serialized only when the value lists have the same length (part of #15398)
There are two commits here - the first is a refactoring to update PropertyDeclarationBlock::to_css to match the spec (please see the full commit message for perhaps too many details).
The second commit utilizes the changes in the first, and updates the animation serialization itself to write an empty serialization if the longhand value lists have different lengths, as per the original issue.
Interestingly, the refactoring of the first commit simplified quite a lot more than the fix for this bug, in particular, the special case of 'overflow' shorthand serialization is handled by default, without the extra special case code (now removed).
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Make Request throw less often (fixes#13457)
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Fixes#15398
The previous commit did most of the work here of updating the algorithm
to skip shorthands if a shorthand value was an empty string. This commit
just updates animations LonghandToSerialize's implementation of
to_css_declared to write an empty string value if the list lengths
differ (and updates the test to match).
Add support for most of the border-image properties, pass to WR.
This adds support for:
* border-image (images, not gradients yet)
* border-image-source
* border-image-slice
* border-image-repeat (stretch + repeat only for now)
Remaining work:
* Connect border-image-outset (WR supports this).
* border-image-width
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Implement an ExtremumLength type which contains all the enumerated
keyword values for min-width, min-height, max-width, and
max-height. Then, implement a MinLength which can be used for min-width
and min-height. So far this just maps to Gecko values.
Refs #13821.
Stylo: Add constructors for @font-face descriptors
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Part of https://bugzilla.mozilla.org/show_bug.cgi?id=1340728
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geckolib: use a global thread pool for styling
By having a single thread pool, rather than one per document, we use less memory. This addresses https://bugzilla.mozilla.org/show_bug.cgi?id=1324250.
This may be obvious to an experienced Rust programmer, but I went with raw pointers because trying to use `Option` global variables resulted in complaints about turning on feature flags in nightly Rust. Since this is for stylo, nightly features are not appropriate here.
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Do not pool HTTP connections.
HTTP connection pooling triggers consistent failures in #14620. Let's disable it until there's more time to solve the underlying problem in #15694.
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Stylo: add :-moz-table-border-nonzero pseudo-class.
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https://bugzilla.mozilla.org/show_bug.cgi?id=1340696
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possible shorthands matches the linked spec.
Previously substep 5 attempted to serialize the complete shorthand
declaration and substep 6 skipped to the next shorthand only if the
current shorthand was not serialized, but this did not catch empty
serializations. The spec on the other hand specifically says that the
*value* should be evaluated first and if the value is empty substep 6
should skip to the next shorthand - which is what happens now.
To do this required some refactoring which mostly simplifies the code.
Specifically:
- append_declaration_value was refactored so that importance is not
required as a arg (by moving it to the end of append_serialization)
and is_overflow_with_name was removed as an arg also (initially I
refactored it elsewhere, but it turns out it's no longer required at
all - more below). With these changes, append_declaration_value can
be used within the algorithm for to_css to obtain just the value for
substep 5.
- Substeps 7 and 8 of the algorithm become explicit (they were implicit
before) by passing the value, shorthand and importance to
append_serialization.
- serialize_shorthand_to_buffer is no longer required (as the algorithm
serializes the value first instead, as per the spec.
A surprising result of this was that I could also remove a lot of code
handling the special case of the overflow properties serialization. This
is because the overflow's LonghandToCss implementation of
to_css_declared already does the right thing according to the spec - it
writes the single value if both overflow-x and -y are equal, and
writes nothing otherwise - so that the algorithm now skips that shorthand
instead rendering the longhands.
Remove network requests from image cache thread
The design of initiating network requests from the image cache thread was simple, but it makes it difficult to implement image loading that conforms to the HTML specification. These changes make the implementation of HTMLImageElement responsible for network requests for `<img>` elements, and CSS-based images (background-image, bullets, etc.) are requested by the script thread to ensure that the layout thread does not attempt to retain unsafe pointers to DOM nodes during asynchronous operations.
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Simplify defining arc ffi types
r? @Manishearth
I don't have a good sense for creating syntax... so if you have any suggestion for the syntax of `impl_arc_ffi` macro, it would be appreciated.
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In support of this goal, the layout thread collects information about
CSS images that are missing image data and hands it off to the script
thread after layout completes. The script thread stores a list of
nodes that will need to be reflowed after the associated network
request is complete. The script thread ensures that the nodes are
not GCed while a request is ongoing, which the layout thread is
incapable of guaranteeing.
The image cache's API has also been redesigned in support of this
work. No network requests are made by the new image cache, since it
does not possess the document-specific information necessary to
initiate them. Instead, there is now a single, synchronous
query operation that optionally reserves a slot when a cache
entry for a URL cannot be found. This reserved slot is then
the responsibility of the queryer to populate with the contents
of the network response for the URL once it is complete. Any
subsequent queries for the same URL will be informed that the
response is pending until that occurs.
The changes to layout also remove the synchronous image loading
code path, which means that reftests now test the same code
that non-test binaries execute. The decision to take a screenshot
now considers whether there are any outstanding image
requests for layout in order to avoid intermittent failures in
reftests that use CSS images.
Update WR (inset box shadow fix, border-image support).
I have a follow up PR for Servo that uses the new border-image
APIs, but I'll land that separately, so that we don't delay
landing the WR update itself.
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Add ImmutableOrigin to allow for serializing origins
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This PR adds a serializable type `ImmutableOrigin` and a non-serializable type `MutableOrigin`. The immutable type represents an origin with `null` domain, and the mutable type represents an origin with a mutable domain. This separation is needed for implementing setting `document.domain`.
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Update heartbeats-simple dependencies for bug fixes
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Updates heartbeats-simple dependencies for some bug fixes in native code (primarily for Windows).
Now we create heartbeats as needed so we don't have to maintain a hardcoded list which keeps getting out of sync.
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Fill missing property in keyframe
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This is a PR of https://bugzilla.mozilla.org/show_bug.cgi?id=1340961
All patches has been reviewed by @emilio.
Thanks!
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@keyframes anim {
from { opacity: 0; transform: none; }
to { transform: none; }
}
In above case, we have to add opacity property and value in the 'to' keyframe.
@keyframes anim {
from { transform: none; }
to { opacity: 0; transform: none; }
}
In above case, we have to add opacity property and value in the 'from' keyframe.
I have a follow up PR for Servo that uses the new border-image
APIs, but I'll land that separately, so that we don't delay
landing the WR update itself.
