This implements the ability to drag the timeline and volume buttons on
UA-rendered media controls. The two behave a bit differently:
Volume is updated as the user drags the volume button. This isn't a very
expensive operation, so updating in real-time and hearing the volume
change feels nice.
The current time, on the other hand, is not committed until the user
releases the mouse button. Performing a seek every time we get a mouse-
move event is pretty laggy, especially for video. However, we still want
to render updates on the timeline itself (so the position of the button
and the timestamp update as you drag). To do so, we internally pause the
media and override the timestamp provided to the layout node.
In the future, we may be able to seek video periodically to provide some
visual feedback. For example, we can seek after every N seconds of
scrubbing, or when the user pauses scrubbing for a while.
It's currently possible to seek to the total sample count of an audio
loader. We must limit seeking to one less than that count.
This mistake was duplicated in both AudioCodecPluginSerenity/Ladybird,
so the computation was moved to a helper in the base AudioCodecPlugin.
Instead of a custom struct, use an AK::Variant for flex-basis.
A flex-basis is either `content` or a CSS size value, so we don't need
anything custom for that.
By using a CSS size, we also avoid having to convert in and out of size
in various places, simplifying the code.
This finally gets rid of the "Unsupported main size for flex-basis"
debug spam. :^)
Return error when input svg is not valid and SVGSVGElement is not
present in the tree instead of doing svg_root nullptr dereference.
Fixes crash on https://apps.kde.org/en-gb/
Adding undistributable space right before setting the content width is
incorrect when it's a percentage. Follow the specification and add it to
GRIDMIN and GRIDMAX instead.
The main thread in the WebContent process is often busy with layout and
running JavaScript. This can cause audio to sound jittery and crack. To
avoid this behavior, we now drive audio on a secondary thread.
Note: Browser on Serenity uses AudioServer, the connection for which is
already handled on a secondary thread within LibAudio. So this only
applies to Lagom.
Rather than using LibThreading, our hands are tied to QThread for now.
Internally, the Qt media objects use a QTimer, which is forbidden from
running on a thread that is not a QThread (the debug console is spammed
with messages pointing this out). Ideally, in the future AudioServer
will be able to run for non-Serenity platforms, and most of this can be
aligned with the Serenity implementation.
In particular, in BFC:
- Non-floating, non-replaced elements
- Floating, non-replaced elements
- Floating, replaced elements
The first two regressed in 1d76126abe
The third one seems to have been introduced by this regression, as it
was seemingly copied from compute_width_for_floating_box in
7f9ede07bc
The fix here has two parts:
1. Don't use the fallback viewBox at all if we're not in SVG-as-image.
2. Don't make a fallback viewBox with zero width and/or height.
This fixes a crash on Bandcamp pages. Thanks Tim Flynn for reporting!
The shortcut we put in place didn't resolve percentage widths and
ignored border spacing. We can still return early after we compute the
width per the specifications.
- The check for `local()` sources wasn't working, and output `local()`
every time. Since we don't parse `local()` yet, let's just always
output a regular URL source.
- Put a space between the URL and the `format()`.
- Stop double-quoting the format string.
While CSS 2.2 does tell us to use the "auto height for BFC roots"
calculation when resolving auto heights for abspos elements, that
doesn't make sense for other formatting context roots, e.g flex.
In lieu of implementing the entire new absolute positioning model from
CSS-POSITION-3, this patch borrows one small nugget from it: using
fit-content height as the auto height for non-BFC-root abspos elements.
When embedding an SVG in an img element, if the external SVG's root
element has both width and height attributes, but no viewBox attribute,
we now create a fallback viewBox with "0 0 width height".
This appears to match the behavior of other browsers. Inspired by
discussion on Mozilla's bug tracker:
https://bugzilla.mozilla.org/show_bug.cgi?id=614649
Compute the contributions to a spanning cell width from each cell in the
span. This better handles uneven column widths, since each cell
contribution is proportional with its own width as opposed to the own
width of the first cell in the span.
This better matches the behavior of other browsers and further aligns
with the specification.
Always use `would_be_fully_clipped_by_painter` to check if painting can
be skipped.
This allows to quickly find all the places where this check happens and
also removes incosistency that before we checked for intersection with
viewport rect in some places and for intersection with painter clip
rect in other places.
The part in FFC where we ask the parent formatting context to size the
flex container midway through layout is really weird, but let's at least
be consistently weird for BFC and IFC. Since IFC always works within its
parent BFC, it can simply forward these requests to the BFC.
This fixes an issue where inline-flex containers incorrectly had main
axis margins subtracted from their content size.
Fixes the bug that currently we don't ever close webdriver client
connection socket when header "Connection: keep-alive" is specified.
This allows to run more WPT tests without running out of free file
descriptors :)
