After running an `rAF` callback, if no new callbacks were registered, we
send a `NoAnimationFramesCallback` to the compositor to stop ticking
animations using video refresh callbacks. This interacts badly with the
mechanism to track spurious animations frames i.e. rAF callbacks that
don't mutate the DOM. Such 'faked' rAF callbacks are triggered by
registering a oneshot timer instead of the compositor callback.
The compositor's refresh callback is never enabled back again once a
non-spurious rAF callback runs and registers a new rAF callback. If the
former callback resets the `spurious_animations_frames` counter, then when
the latter rAF callback runs, it will not schedule a OneShotTimer timer
for any rAF callback that itself registers, since the counter was reset
previously. Hence that third rAF callback that never runs as it relies
on the compsitor's refresh callback, which was disabled previously.
The current logic also doesn't actually recognize spurious animation
frames because the `spurious_animations_frames` counter is updated at
the end of the `run_the_animation_frame_callbacks`, effectively meaning
`was_faking_animation_frames` and `self.is_faking_animation_frames` will
always be the same value but the logic effectively only runs when
`(!was_faking && is_faking)` is true.
This patch fixes the logic to detect spurious animations frames by
moving logic to update the counter to be before the check for spurious
frames. It also ensures that the compositor's refesh callbacks is
re-enabled once we see a non-spurious callback.
Fixes#35386
Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>
In #34998, I inadvertantly enabled shader precaching by default during a
cleanup. This change reverts that particular mistake.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Instead of telling the Constellation to tell the embedder that new
frames are ready, have the compositor tell the embedder directly. This
should reduce frame latency. Now, after processing compositor
updates, run any pending `WebView::new_frame_ready` delegate methods.
This change also removes the `refresh` call from the Java interface as
that was the only other place that the compositor was rendering the
WebRender scene outside of event looping spinning. This `refresh` call
was completely unused.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Add a delegate method for HTTP authentication and a related
`AuthenticationRequest` object that carries with it the URL as well as
whether or not the authentication request is for a proxy or not.
This is now separate from the prompt API because requesting
authentication doesn't necessarily involve prompting -- this is an
implementation detail of the embedder. In addition, the internal bits
are cleaned up slightly.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
- Update the script crate to better reflect the modern Permission
specifcation -- removing the necessity for an `Insecure` variant of
the permissions prompt.
- Have all allow/deny type requests in the internal API use an
`AllowOrDeny` enum for clarity.
- Expose `PermissionsRequest` and `PermissionFeature` data types to the
API and use them in the delegate method.
- Update both servoshell implementations to use the API.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Mukilan Thiyagarajan <mukilan@igalia.com>
Background:
> JavaScript strings are potentially ill-formed UTF-16 (arbitrary
> Vec<u16>) and can contain unpaired surrogates. Rust’s String type is
> well-formed UTF-8 and can not contain any surrogate. Surrogates are
> never emitted when decoding bytes from the network, but they can sneak
> in through document.write, the Element.innerHtml setter, or other DOM
> APIs.
In 2015, Servo launched an experiment to see if unpaired surrogates
cropped up in page content. That experiment caused Servo to panic if
unpaired surrogates were encountered with a request to report the page
to bug #6564. During that time several pages were reported with unpaired
surrogates, causing Servo to panic. In addition, when running the WPT
tests Servo will never panic due to the `-Z replace-surrogates` option
being passed by the test driver.
Motivation:
After this 10 year experiment, it's clear that unpaired surrogates are a
real concern in page content. Several reports were filed of Servo
panicking after encountering them in real world pages. A complete fix for
this issue would be to somehow maintain unpaired surrogates in the DOM,
but that is a much larger task than simply emitting U+FFD instead of an
unpaired surrogate.
Since it is clear that this kind of content exists, it is better for
Servo to try its best to handle the content rather than crash as
production browsers should not crash due to user content when possible.
In this change, I modify Servo to always replace unpaired surrogates.
It would have been ideal to only crash when debug assertions are
enabled, but debug assertions are enabled by default in release mode --
so this wouldn't be effective for WPT tests.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Using environment variables is not really an option on ohos/android,
so add a CLI option to configure tracing.
Making it a `pref`, so that we can persist the filter
might also be desirable.
Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>
* Handle slots in an event's path
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Update WPT expectations
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
---------
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
This is only used in servoshell, even though it was plumbed through
script previously. It's just about how the `RenderingContext` is set up,
which is something managed entirely outside of servo itself.
In addition, make the name of `servo_shell_preferences` in `app.rs` more
consistent with the rest of the codebase.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
In addition to some small API changes, this downstream version of
WebRender no longer depends on a very old version of time. This is the
last step toward removing the dependency on `time0.1`.
The review for this commit should also include: 9f552bebab
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Add a `ClipboardDelegate` to the `WebView` API and a default
implementation in libservo for this delegate that works on Mac, Windows,
and Linux. Support for Android will be added in the future. This means
that embedders do not need to do anything special to get clipboard
support, but can choose to override it or implement it for other
platforms.
In addition, this adds support for handling fetches of clipboard contents
and renames things to reflect that eventually other types of clipboard
content will be supported. Part of this is removing the string
argument from the `ClipboardEventType::Paste` enum because script will
need to get other types of content from the clipboard than just a
string. It now talks to the embedder to get this information directly.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
