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r? @bholley
Source-Repo: https://github.com/servo/servo
Source-Revision: 1b2450339c40dbcb65e94a346ea434d45f0edf90
This removes the `[replace]` override in geckolib and therefore unblocks https://github.com/servo/servo/pull/12391.
This includes the `gecko_string_cache` redesign discussed in https://github.com/servo/servo/pull/12548.
r? @bholley
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Source-Repo: https://github.com/servo/servo
Source-Revision: 5e83b3f83bfcf48d0096442bdf5c9bf753623970
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r? @bholley
cc @heycam
Source-Repo: https://github.com/servo/servo
Source-Revision: cbf71a2cf39e792f75309e68f7cabe862d4a70eb
This commit adds hooks to the Servo style traversal to avoid traversing all the
DOM for every restyle. Additionally it changes the behavior of the dirty flag to
be propagated top down, to prevent extra overhead when an element is dirtied.
This commit doesn't aim to change the behavior on Servo just yet, since Servo does extra job when dirtying the node related with DOM revision counters that might be necessary.
CC @asajeffrey for the DOM revision counters stuff. When a node is dirty, do all its descendants really need to increment the revision counter, or is this an unintended effect? My intuition is that this is hurting performance quite a lot for servo.
r? @bholley
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Source-Repo: https://github.com/servo/servo
Source-Revision: 944d371b8f0e72f6aa5465be38c0c8daeab66127
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This is a rewrite for how style interfaces with its consumers in order to allow
different representations for an element snapshot.
This also changes the requirements of an element snapshot, requiring them to
only implement MatchAttr, instead of MatchAttrGeneric. This is important for
stylo since implementing MatchAttrGeneric is way more difficult for us given the
atom limitations. This also allows for more performant implementations in the
Gecko side of things.
I don't want to get this merged just yet, mainly because the stylo part is not
implemented, but I'd like early feedback from @bholley and/or @heycam: How do
you see this approach? I don't think we'll have much problem to implement
MatchAttr for our element snapshots, but... worth checking.
r? @heycam
Source-Repo: https://github.com/servo/servo
Source-Revision: 1e0321f7dde5f33f7d26bbd4f088622fa3660477
Background:
The changes to Servo code to support Stylo began in the `selectors` crate with making pseudo-elements generic, defined be the user, so that different users (such as Servo and Gecko/Stylo) could have a different set of pseudo-elements supported and parsed. Adding a trait makes sense there since `selectors` is in its own repository and has others users (or at least [one](https://github.com/SimonSapin/kuchiki)).
Then we kind of kept going with the same pattern and added a bunch of traits in the `style` crate to make everything generic, allowing Servo and Gecko/Stylo to do things differently. But we’ve also added a `gecko` Cargo feature to do conditional compilation, at first to enable or disable some CSS properties and values in the Mako templates. Since we’re doing conditional compilation anyway, it’s often easier and simpler to do it more (with `#[cfg(feature = "gecko")]` and `#[cfg(feature = "servo")]`) that to keep adding traits and making everything generic. When a type is generic, any method that we want to call on it needs to be part of some trait.
----
The first several commits move some code around, mostly from `geckolib` to `style` (with `#[cfg(feature = "gecko")]`) but otherwise don’t change much.
The following commits remove some traits and many type parameters through the `style` crate, replacing them with pairs of conditionally-compiled API-compatible items (types, methods, …).
Simplifying code is nice to make it more maintainable, but this is motivated by another change described in https://github.com/servo/servo/pull/12391#issuecomment-232183942. (Porting Servo for that change proved difficult because some code in the `style` crate was becoming generic over `String` vs `Atom`, and this PR will help make that concrete. That change, in turn, is motivated by removing geckolib’s `[replace]` override for string-cache, in order to enable using a single Cargo "workspace" in this repository.)
r? @bholley
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Source-Repo: https://github.com/servo/servo
Source-Revision: 2d01d41a506bcbc7f26a2284b9f42390d6ef96ab
--HG--
rename : servo/ports/geckolib/selector_impl.rs => servo/components/style/gecko_selector_impl.rs
rename : servo/ports/geckolib/values.rs => servo/components/style/gecko_values.rs
rename : servo/ports/geckolib/properties.mako.rs => servo/components/style/properties/gecko.mako.rs
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Bug 10104 - Only restyle nodes that uses viewport percentage units on viewport size change
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Source-Repo: https://github.com/servo/servo
Source-Revision: d87ea67bf2efec45368d3e48634c6c16de7486ff
This marshaling is slow, because Gecko stores attributes as UTF-16 and does not atomize them in all cases, and it turns out that the need for them in Servo is pretty minimal. With some refactoring across servo and rust-selectors we can fix this.
Source-Repo: https://github.com/servo/servo
Source-Revision: abdf2f28a0bd25a76a31b4fd2410c7a87448ed54
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This allows removing `#![feature(as_unsafe_cell)]` in geckolib and make progress towards #11815.
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The bulk of this is adding cargo features to make derived implementations of `heapsize` and `serde` traits optional.
"Almost" because `std::intrinsics::discriminant_value` is currently unstable and doesn’t have any stable replacement that I know of. For now, this PR conditionally replaces it with `unimplemented!()`.
r? @nox
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Source-Repo: https://github.com/servo/servo
Source-Revision: 0fb5d634a007f3d0424f95569ac3f83d500d054c
This builds on top of #10815, so it's really just the last commit the one that should be reviewed.
I tried to apply the new infrastructure to servo, but failed (for now?).
The problem with it is that it'd require `ThreadSafeLayoutElement` to implement `selectors::Element`, which is a lot of work and might be racy (not totally sure about it though). Thus, I prefered to keep selectors eager until knowing that it's safe to do it.
r? @mbrubeck for style changes, @bholley for the geckolib changes (minimal for now, glue + a list of lazy PEs must be added)
Source-Repo: https://github.com/servo/servo
Source-Revision: 29823cb378ad0b05a82cfdd133c401a678a19007
This is a work-in-progress that:
* Adds support for some pseudo-elements to skip the cascade entirely, in an analogous way to Gecko's anonymous box pseudo-elements.
* Takes rid of `StylistWrapper`, and uses `Arc::get_mut` instead.
* Uses the first bullet to precompute the `-servo-details-content` pseudo's style.
I'd like @bholley to take a look before following, do you think that the aproach is the correct?
Also, @SimonSapin could want to put some eyes on it.
Depends on https://github.com/servo/rust-selectors/pull/81
Source-Repo: https://github.com/servo/servo
Source-Revision: 407f991c8aba5dcf5312bb2c34a3dd4fe12e5471
This allows geckolib to pass gecko style structs and have the style system write to them directly, provided we implement all the traits.
Source-Repo: https://github.com/servo/servo
Source-Revision: 605842f193aedc1151ab38a99c49f693c76e5cf3
Right now, there's a huge amount of complexity in T{Node,Element,Document} and friends because of the lifetime parameter.
Before I started generalizing this code for use by Gecko, these wrappers were plain structs. They had (and still have) a phantom lifetime associated with them to prevent references to DOM nodes from leaking past the end of restyle, when they might be invalidated by a GC.
When I generalized them, I decided to put the lifetime on the trait as well, since there are some situations where the lifetime is, in fact, necessary. Specifically, they are necessary for the compiler to understand that all the things borrowed from all the nodes and elements and so on have the same lifetime (the lifetime of the restyle), rather than the lifetime of whichever particular element or node pointer the value was borrowed from. This come up in situations where we do |let el = node.as_element()| or |let n = el.as_node()| and then borrow something from the result. The compiler thinks the borrow lifetime is that of |el| or |n|, when it's actually longer.
In practice though, I think the style and layout algorithms we use don't run into this issue much, and we can hack around it where it comes up. So I think we should remove the lifetimes from the traits, which will let us aggregate the embedding-provided traits together onto a single meta-trait and significantly simplify the code.
Source-Repo: https://github.com/servo/servo
Source-Revision: aea8d8959dcb157a8cc381f1403246ce8ca1ca00
This allows, among other things, having different implementations for parsing pseudo{elements, classes} in both `ports/geckolib` and in servo.
Source-Repo: https://github.com/servo/servo
Source-Revision: c11844cbf28054784c8d65781cff20045d8ee48b
This commits updates rust-selectors to use the generic parser, and as
such it moves the element state into the style crate.
Source-Repo: https://github.com/servo/servo
Source-Revision: ae20f2556bc7807b39b6649ac1f738644abcc26a
The wrapper stuff is partially-complete, modulo some unimplemented methods. The glue code is just a toy for now. Regardless, I think it's worth getting some of this stuff in-tree to minimize breakage.
Source-Repo: https://github.com/servo/servo
Source-Revision: 77d3fbcca3c6f7e8b4068f89e25b090977fe5672
This should be the last major hoisting necessary to use the style system standalone. \o/
Source-Repo: https://github.com/servo/servo
Source-Revision: ddc3b7942eea8328e9eb22d864d34fce572d5535
This is a step towards removing the dependency of stylo on layout/.
This PR depends on #9004.
Source-Repo: https://github.com/servo/servo
Source-Revision: 0f5c614609fd8867a9e7c27b8a398ea7d877c714
