Casting `*const T` to `*const U` with `U: Sized` is allowed even if `T: ?Sized`. This safely extracts the data pointer out of a trait object, without relying on the memory representation of trait objects.
Source-Repo: https://github.com/servo/servo
Source-Revision: 86a5135ffaa60d4743b6f6950fc395c2615e85ba
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Source-Revision: b2df99cb65a585907e59f70081c3b3c15317b11a
These are the inter-dependent patches of bug 1392161. We want to handle
extreme small lengths carefully for some properties, such as transform, so we
shouldn't use |Au| as the computed value of specified::Length. Now, we introduce
a new type, CSSPixelLength, which is a wrapper of CSSFloat, and it is the
computed value of specified::Length, so we can keep the fractional part
of computed::Length.
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- [X] These changes do not require tests because there is a wpt test for this, and I also add some others in Gecko.
Source-Repo: https://github.com/servo/servo
Source-Revision: ac1b49b1987d37b3c1ba67213b43c6d5fc373579
This leverages the position:sticky support in WebRender to bring basic
support for position:sticky in Servo. There are still some issues with
nested sticky flows as well as a few other corner cases. Tests are
imported from WPT and can be removed once we update to the latest
version.
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Source-Revision: f1fab036ab16910587c3b0d7813c78b49562f6d9
No need to call the `assign_block_size_block_base()` method of normal block in flex.rs since it is implemented for CSS2.
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Automatically verify that derive() lists are alphabetically ordered #18172
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Source-Revision: 474369618965569407d127b1e8c481e757cc59d3
Instead of only promoting flows with positioned fragments to containing
blocks, also do this for flows which have the transform, perspective or
filter properties set. This is what the spec requires and also fixes
some failing tests. It will allow us to stop creating stacking contexts
for overflow:hidden and overflow:scroll flows.
Fixes#18091.
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Source-Revision: 12607531d812ee87e0b4a70f961c1aa3ec4c414d
This is a better approach than relying on
contains_positioned_fragments, because in the future other properties
will create absolute containing blocks.
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Source-Revision: 7806784eb4761bf9018d342d29594eb6c9058fc3
Various refactorings of the code for traversing flow trees, including:
* Add a generic inorder traversal method
* Remove unused `traverse_postorder_absolute_flows` method
* Combine `compute_absolute_position` and `build_display_list` into a single traversal
* Move all generic traversal code into the `layout::traversal` module
And some changes to add documentation and more-accurate names:
* Fix spelling of `bottom_up_flow`
* Rename `compute_absolute_position` to `compute_stacking_relative_position`
* Change the mis-named `traverse_flow_tree_preorder` to `reflow`
---
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Source-Repo: https://github.com/servo/servo
Source-Revision: ed3c2b95573c355c11c99eb43320d604fc95a5e9
The `stylearc` alias is left there temporarilly and will be removed completely in a later commit/PR where also `components/style/gecko/generated/structs_{debug|release}.rs` are re-generated (they still use the old alias).
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Source-Revision: 31228c18499d1c7f68b6b64b559354c768e81215
- [x] `./mach build -d` does not report any errors (kinda, need webrender published and Cargo.toml fixed up)
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Source-Revision: 18653f69581693a5bae1ce4e350e78bc16159b08
Hey,
First of all, this is my first PR to Servo project and I'm learning Rust, so sorry if you see something that it's not correct. I did that as best as I know.
This PR fix the issue #6799; I tried all the corner cases that I can think about it and always get the right result and the same as other browsers.
Related to the build:
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#6799
In the other hand, I added the test in the cssom folder, is where getBoundingClientRect is defined, so I think that is the best place.
I'm sure that the line 122 can be better, but I didn't find a way to transform a Point2D from f32 to px in a easy way.
I'm here to listen to your recommendations and fix any issue.
Thanks!
Source-Repo: https://github.com/servo/servo
Source-Revision: 9d32b9cc35377f5d74197514435199e407c096fa
The root element doesn't have a containing block, so use the viewport size instead of `self.base.absolute_cb`.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 10cc59dd2ef7509c724f5c81c0dcd22b31071590
overflow:clip doesn't exist, it's just called clip internally. Renamed, and added the other missing values.
I also removed the overflow newtype -- no need for extra code bloat, and it's not protecting us from much.
Source-Repo: https://github.com/servo/servo
Source-Revision: cd8af862446ed8e4787d36d5de5d4dc254339a5e
* Add calc method to calculate formula value with parent size
* Add unit test case
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Please see this issue: https://github.com/servo/servo/issues/15986
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Source-Revision: 418c3e8cc74b561c9c704da4dfdfb74681bf42a1
When reflowing a block format context during the inorder traversal,
propagate restyle damage manually to its children since they were
already reflowed. Also, test the border box to see if it can fit into
floats according to CSS 2.1 § 9.5.
Improves reddit and yahoo.
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Source-Revision: 541db5f9a791f52e22d409d3b40b13223df69b4c
Instead of passing down a complex clipping region to each item, used
shared clipping to handle overflow:hidden and CSS clips. In addition to
being more efficient, this should also fix quite a few issues related
to absolutely positioned elements.
One existing reftest is slightly modified to avoid tickling a quirk
with the way that WebRender rasterizes masks. We are working out how to
best express these combined masks with the API or need to. The change
does not affect the original subject of the reftest.
Fixes#13109.
Fixes#10151.
Fixes#7575.
Fixes#8074.
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Source-Revision: ab7e1e2d36829e20df130f7174c3c7d1dbbd5cc5
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Before this PR, every object reflected in CSSOM is in `Arc<RwLock<_>>` to enable safe (synchronized) mutable aliasing. Acquiring all these locks has significant cost during selector matching:
* https://bugzilla.mozilla.org/show_bug.cgi?id=1311469
* https://bugzilla.mozilla.org/show_bug.cgi?id=1335941
* https://bugzilla.mozilla.org/show_bug.cgi?id=1339703
This PR introduce a mechanism to protect many objects with the same `RwLock` that only needs to be acquired once.
In Stylo, there is one such lock per process (in a `lazy_static`), used for everything.
I non-Stylo Servo, I originally intended to have one such lock per document (for author-origin stylesheets, and one per process for user-agent and user sytlesheets since they’re shared across documents, and never mutated anyway). However I failed to have the same document-specific (or pipeline-specific) `Arc` reachable from both `Document` nodes and `LayoutThread`. Recursively following callers lead me to include this `Arc` in `UnprivilegedPipelineContent`, but that needs to be serializable. So there is a second process-wide lock.
This was previously #15998, closed accidentally.
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Source-Revision: bb54f0a429de0e8b8861f8071b6cf82f73622664
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According to https://github.com/servo/servo/pull/3069 the cached thread local context is introduced for green threads. Now green threads has gone, and the existence of cache force us to create a `LayoutContext`, an `AssignISizes` and an `AssignBSizes` for each flow during parallel layout, so the pull request tries to remove it. And it also switch `assign_inline_sizes()` to accept a `LayoutContext` parameter, as according to my current design we need to do full layout to some flex items for column flexbox during assign isize traversal.
Part of #14123.
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Source-Revision: c75946c3ed52d262aae585055023becd5a2e9769
Only create scroll roots for overflow regions when the overflow region
is actually larger than the container size. This prevents creating
scrolling roots for elements that do not have overflow scroll as a
side-effect of the way their height and width is defined. For example,
tables should never respect overflow:scroll since their height and
width should always be large enough to prevent overflow. This also
decreases the size and complexity of the display list in many other
circumstances.
As part of this change, transformed overflow calculation is moved from
display list construction to layout. This should mean that overflow is
handled more accurately earlier.
Fixes#14574.
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Collect scroll roots during the collect_stacking_context phase instead
of during display list construction. This will be useful in order to
collect containing block scroll roots as well as to give scroll roots
sequential ids in the future. This change also pulls stacking context
children out of the StackingContext struct itself, which should reduce
very slightly the memory used by the finished display list. This also
simplifies the DisplayListBuilder because it no longer has to maintain
a stack of ScrollRootIds and StackingContextIds and can instead just
rely on the program stack.
Source-Repo: https://github.com/servo/servo
Source-Revision: dabb79c7878fce31b8b979dd5fcfdfb8713a9d80
These methods are not only used during display list construction, so
they are a better fit for the flow structs themselves. This does
not introduce any behavior change, but should make it easier to fix
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Source-Revision: 23265321988113b290aff190f859be2290a81545
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I've added a new tidy rule (no = in the beginning of line) + tests for it. Also cleaned up a few rust source files to accord with the new rule.
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Source-Revision: b6c137b36f8b9f9cc5c0105bb94a4edeaf7d09be
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This PR removes the `util` crate.
* Replaced the `spawn_named` and `clamp` functions by appropriate uses of `std:🧵:Builder::spawn`, `std::cmp::min` and `std::cmp::max`.
* Moved `opts`, `prefs` and `resource_files` into a new `config` crate.
* Moved `remutex` and `geometry` into their own crates.
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Source-Revision: 4eb653817f87e5fb47de34356f558eb76ecbca9f
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Set the flag of the fragment of children in a flex container according
to the direction of the container. The mark is done on the fragment
because flex item enstablish a stacking context when its z-index is
non-zero ,despite its `position' property.
Part of #14123.
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r? @pcwalton
Source-Repo: https://github.com/servo/servo
Source-Revision: 333c397f03bc2d143e0d8c112138d5758d37f6f5
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Don't promote all scrollable regions to stacking contexts
Instead annotate all flows with their owning ScrollRoots. When
processing the display list items into a flattened display list, we add
PushScrollRoot and PopScrollRoot to signal when scrolling regions start
and end. It is possible for content from different scrolling regions to
intersect and when they do, the stack of scrolling regions is
duplicated. When these duplicated scrolling regions stacks reach
WebRender, it will scroll them in tandem.
The PushScrollRoot and PopScrollRoot items are currently represented as
StackingContexts in WebRender, but eventually these will be replaced
with special WebRender display items.
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Source-Repo: https://github.com/servo/servo
Source-Revision: ef5ca14283f1f47654093b5c196ab813efb53ea8
We need to hang both snapshots and restyle damage off of ElementData, and so we need them to be concrete to avoid infecting ElementData with the trait hierarchy.
Source-Repo: https://github.com/servo/servo
Source-Revision: d8ac5100e81ccbad4b5131688b96bedb9b5e279d
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Migrated the trace-layout code from old `rustc-serialize` to `serde_json`. This will help us iterate faster on the layout viewer (#13432), #13436, #12675 and fix#12936.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 1c26f44cbb23e7da3b9d63f0223c8d5d43eec958
This creates a sharp distinction between `Arc<Flow>`s, which may be
owned by anyone, and `FlowRef`s, which may only be owned by the
traversal code. By checking the reference count, we ensure that a `Flow`
cannot be pointed to by `Arc`s and `FlowRef`s simultaneously.
This is not a complete fix for #6503, though it is a necessary start
(enforcing the no-aliasing rule of `FlowRef::deref_mut` will require far
more work).
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Source-Repo: https://github.com/servo/servo
Source-Revision: 2b4a7b0b7ad9dd568dfde15ab47dc634ec561d70
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Source-Revision: 3a3f3192a87dbcd5d05efb82a1f4dde23f9c4cf7
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Layers were a feature of the legacy drawing path. If we re-add them at
some point, it probably makes more sense to make them a product of
display list inspection.
This change also remove a bunch of dead painting code.
Source-Repo: https://github.com/servo/servo
Source-Revision: bb271ef4afea02b6b1b5d207e773d1fedccd2906
This removes paint threads, rust-layers dependency, and changes
optional webrender types to be required.
The use_webrender option has been removed, however I've left
the "-w" command line option in place for now so that wpt
runner can continue to pass that. Once it's removed from there
we can also remove the -w option.
Once this stage is complete, it should be fine to change the
display list building code to generate webrender display
lists directly and avoid the conversion step.
Source-Repo: https://github.com/servo/servo
Source-Revision: f96718d03da969510dc992699cb6f25c2e21ae1e
Clipping region computation now follows a simple process: (1) in the
parent's coordinate system, parents store appropriate clipping regions
into children; (2) each child moves its clipping region to its own
coordinate system if necessary.
Because clipping region computation is now based on stacking-relative
border box positions and the `transform_rect` method, it can handle
`position: relative` offsets and more types of transforms, such as
scaling.
Improves etsy.com.
Closes#13753.
Source-Repo: https://github.com/servo/servo
Source-Revision: c1abd8797c5b257c9339fbaf6ca4b7480c43a755
