We will obsolete StyleAnimationValue in the future, and can treat
AnimationValue as a wrapper of RawServoAnimationValue to hide the FFIs
at that moment. For now, we still need both types, so it's better to make sure
they are mutually exclusive in AnimationValue. Therefore, let's add some
assertions.
Besides, I think those FFIs might do many things and it seems those methods
are not critical, so let's move them into the cpp file, so we can remove
some dependencies to avoid re-compiling so many files if someone needs
revise ServoBindings.h.
MozReview-Commit-ID: FJ1uTvEQ7NT
For Android we want to be able to set a global zoom factor that will scale any page where font inflation is not turned on.
Android makes the system font scale available as a float factor. For our purposes, converting this to a percentage based value and rounding to an integer is accurate enough and enables us to pass this value as a standard Gecko int preference. This means we can make use of the standard infrastructure for setting and retrieving Gecko-side preferences both from Java and JS (the latter during testing), as opposed to having to write custom JNI and C++/IDL helper functions.
To that effect, we implement a method for retrieving that setting via nsLayoutUtils, analogous to the current font inflation settings. Since we later want to clamp the effective text zoom resulting from that setting by zoom.minPercent and maxPercent, we add var caches for them in nsLayoutUtils as well.
MozReview-Commit-ID: Ler2YmwzImE
It's a very general mechanism for replacing the implementation of
printf_stderr().
It's primarily used by the profiler, sparingly, and not in an important way.
Worse, it prevents us from using MOZ_LOG in the profiler, which is something I
want. Because if any code that locks gPSMutex also calls MOZ_LOG, that then
calls printf_stderr(), which calls profiler_log(), which locks gPSMutex, which
deadlocks.
The only other use of set_stderr_callback() is for the ultra-hacky,
for-local-use-only copy_stderr_to_file() function, which was added for B2G
debugging and is no longer necessary.
This patch removes set_stderr_callback() altogether.
This change is to use gecko_enum_prefix in helpers.mako.rs, so that we do not
need to manually write code for nsStyleDisplay::mTransformBox.
MozReview-Commit-ID: 7UAL0iUcSIO
If we disable APZ on an individual scrollable element by setting the "disable APZ"
flag on the ScrollMetadata, we should also disable paint-skipping for that element.
If we don't do this, we end up in a situation where the APZ code is not applying
the async transform but is sending repaint requests expecting the main thread to
do repaints. Meanwhile the main-thread thinks that it can send empty transactions
and have APZ update the async transform (a.k.a. paint-skipping). So visually
neither APZ nor main-thread have an effect and the element doesn't appear to
scroll except with the tile-aligned displayport shifts. Disabling paint-skipping
on the element fixes the issue.
MozReview-Commit-ID: H4wpVLw8r8X
Various pieces of browser chrome, such as the accessible carets or new
find-in-page highlighter, overlay the content with anonymous content elements.
These overlays are positioned with respect to the root document. This means that
if the overlay really pertains to a scrollable subframe (e.g. carets for a text
selection inside an iframe), then scrolling the subframe would result in the
anonymous contents being "mispositioned" from the user's point of view. The
browser chrome code that creates the overlay is responsible for moving it in
response to user scrolling, so that it appears correct. However, the only
mechanism the browser chrome code has to detect user scrolling are the main-thread
events, which are asynchronous with respect to APZ.
Therefore, in order to improve the user experience, we need to disable APZ in
cases where this happens. We specifically isolate the case where the root content
document has visible anonymous content elements, and disable APZ on scrollable
subframe elements inside that document. Note that APZ remains enabled on the
root scroller itself, because we expect the browser chrome code to use absolute-
positioning on their anonymous contents, so that even with APZ scrolling they
will stay where they are supposed to.
MozReview-Commit-ID: 770edaGWMLi
Mark video element as tainted (stored on the decoder owned by video element) when the video is used as source to drawImage() on canvas.
MozReview-Commit-ID: HdciVwhqPu3
