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For a long time, `gfx_traits` has held a lot of things unrelated to graphics
and also unrelated to the `gfx` crate (which is mostly about fonts).
This is a cleanup which does a few things:
1. Move non `gfx` crate things out of `gfx_traits`. This is important in
order to prevent dependency cycles with a different integration between
layout, script, and fonts.
2. Rename the `msg` crate to `base`. It didn't really contain anything
to do with messages and instead mostly holds ids, which are used
across many different crates in Servo. This new crate will hold the
*rare* data types that are widely used.
Details:
- All BackgroundHangMonitor-related things from base to a new
`background_hang_monitor_api` crate.
- Moved `TraversalDirection` to `script_traits`
- Moved `Epoch`-related things from `gfx_traits` to `base`.
- Moved `PrintTree` to base. This should be widely useful in Servo.
- Moved `WebrenderApi` from `base` to `webrender_traits` and renamed it
to `WebRenderFontApi`.
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* Remove script_plugins
* Use crown instead of script_plugins
* crown_is_not_used
* Use crown in command base
* bootstrap crown
* tidy happy
* disable sccache
* Bring crown in tree
* Install crown from tree
* fix windows ci
* fix warning
* fix mac
libscript_plugins.dylib is not available anymore
* Update components/script/lib.rs
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
* Update for nightly-2023-03-18
Mostly just based off https://github.com/servo/servo/pull/30630
* Always install crown
it's slow only when there is new version
* Run crown test with `mach test-unit`
* Small fixups; better trace_in_no_trace tests
* Better doc
* crown in config.toml
* Fix tidy for real
* no sccache on rustc_wrapper
* document rustc overrides
* fixup of compiletest
* Make a few minor comment adjustments
* Fix a typo in python/servo/platform/base.py
Co-authored-by: Samson <16504129+sagudev@users.noreply.github.com>
* Proper test types
* Ignore tidy on crown/tests
---------
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
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* strict imports formatting
* Reformat all imports
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* remove extern crate
* Update components/script_plugins/lib.rs
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
---------
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
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* Add `no_trace` option to JSTraceable derive
* NoTrace wrapper
* Port some types to no_trace schematics
* Fixing my unsafe mistakes (not tracing traceables)
* Add docs & safety guards for no_trace
Safety guards (trait shenanigans) guarantees safety usage of `no_trace`
* Port canvas_traits to no_trace
* Port servo_media to no_trace
* Port net_traits to no_trace
* Port style to no_trace
* Port webgpu to no_trace
* Port script_traits to no_trace
* Port canvas_traits, devtools_traits, embedder_traits, profile_traits to no_trace
* unrooted_must_root lint in seperate file
* Add trace_in_no_trace_lint as script_plugin
* Composable types in must_not_have_traceable
* Introduced HashMapTracedValues wrapper
* `HashMap<NoTrace<K>,V>`->`HashMapTracedValues<K,V>`
* Port rest of servo's types to no_trace
* Port html5ever, euclid, mime and http to no_trace
* Port remaining externals to no_trace
* Port webxr and Arc<Mutex<_>>
* Fix spelling in notrace doc
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1. When updating the animation timeline, ensure that nodes that are
animating are marked dirty, if necessary, so any style queries will
force an layout flush.
2. Disable the problematic transition test suites, as they are in Gecko.
These suites often fail when Servo is so overloaded that it cannot
deliver frames fast enough to get more than two samples during the
animation lifecycle.
Fixes #28334.
Fixes #26435.
Fixes #21486.
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empty
Fixes the test case `/_mozilla/css/css-transition-cancel-event
.html`, which was failing under a specific circumstance.
The observed sequence of events during the failing test run looks like
this:
1. Transitions start in `div1` and `div2`.
2. `div1` generates a `transitionend` event.
3. The `transitionend` event handler removes `div2` from DOM, cancelling
its ongoing transition.
4. `div2` is supposed to generate a `transitioncancel` event in a timely
manner, which it does not. The test fails as a result.
What is going on here? Here's a possible explaination:
1. During one invocation of `ScriptThread::handle_msgs`...
2. In step 2, `ScriptThread::update_animations_send_events` -> `Document
::update_for_new_timeline_value` detects the completion of the
transition, and in response, pends the `transitionend` event.
3. In step 3, `ScriptThread::update_animations_send_events` ->
`Animations::send_pending_events` calls the `transitionend` handler.
4. The `transitionend` event handler removes `div2`, thereby cancelling
its ongoing transition and triggering a reflow.
5. Reflow takes place. During this, `Animations::do_post_reflow_update`
-> `Animations::handle_canceled_animations` pends the
`transitioncancel` event (precursor to step 4).
6. Having discovering that there was no running animation, `Animations::
do_post_reflow_update` calls `self.update_running_animation_presence
(_, false)`, which sends `AnimationState::NoAnimationsPresent`.
7. The invocation of `ScriptThread::handle_msgs` ends, and another
starts. It blocks waiting for events.
8. Meanwhile, the compositor receives `AnimationState::
NoAnimationsPresent` and stops further generation of animation ticks.
9. With no events to wake it up, the script thread is stuck waiting
despite having the pending `transitioncancel` event (step 4).
The HTML specification [says][1] that "an event loop must continually
run [...] as long as it exists" and does not say it can block if there
is nothing to do. Blocking is merely optimization in a user agent
implementation. Pending animation-related events must be processed every
time a "rendering opportunity" arises unless the user agent has a reason
to believe that it "would have no visible effect".
Skipping the processing of animation-related events would have visible
effect if such events are indeed present. The correct implementation in
Servo, therefore, would be to request more animation ticks so that such
events are processed in a subsequent tick.
[1]: https://html.spec.whatwg.org/multipage/#event-loop-processing-model
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animations: Finish support for fractional iteration counts
This change also improves support for creating animations with negative
delays, as that is necessary to test support for fractional iteration
lengths.
Fixes: #14858
<!-- Please describe your changes on the following line: -->
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #14858
- [x] There are tests for these changes
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->
<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
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This change also improves support for creating animations with negative
delays, as that is necessary to test support for fractional iteration
lengths.
This change also adjusts existing Servo animation tests which assumed
that advancing to the exact moment of the end of the animation would be
considered "before the end." With this change, this moment is "after the
end."
Fixes: #14858
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This includes nodes which are being reparented.
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This change extends the DocumentAnimationSet to hold animations for
pseudo-elements. Since pseudo-elements in Servo are not in the DOM like
in Gecko, they need to be handled a bit carefully in stylo. When a
pseudo-element has an animation, recascade the style. Finally, this
change passes the pseudo-element string properly to animation events.
Fixes: #10316
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This will be used in order to hold animations for pseudo elements in the
DocumentAnimationSet. Also no longer store the OpaqueNode in the
animation and transition data structures. This is already part of the
DocumentAnimationSet key.
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Fixes #21564.
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Instead of having `ScriptThread` handle rooting nodes, do this in
`Animations`. This makes it easier to know when it is appropriate to
root and unroot nodes instead of relying on a certain order of events.
This also allows reducing quite a bit the amount of unsafe code.
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For legacy reasons, transitions were marked as finished after updating the
style. According to the spec, they should be marked as finished when
animations are updated and before restyle. This change does that as well
as preventing replacement of finished transitions.
Having finished transitions survive a full restyle cycle and allowing
the replacement of finished transition, could lead to issues were
removed from the global list of animating transitions too soon:
1. A transitions finishes
2. Restyle
3. Transitions is marked as finished and events are queued
4. Restyle cancels finished transition and replaces it instead of
clearing finished transition
5. Events are sent for the incorrectly canceled transition removing it
completely from the list of running transitions due to the extra
event.
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This event is triggered when an animation iterates. This change also
moves iteration out of style calculation to an "update animations" which
is the next part of having animation event handling match the HTML spec.
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This removes an extra layer of abstraction and allows Servo to share
more code with Gecko. In addition, we will need to handle raw
`AnimationValue` structs soon in order to fully implement "faster
reversing of interrupted transitions."
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This is preparation for sharing this code with layout_2020 and
implementing selective off-the-main-thread animations.
We still look for nodes not in the flow tree in the layout thread.
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