We already walk the entire paint tree within each stacking context in
the main hit testing function (StackingContext::hit_test()), so there's
no need for each individual paintable to walk its own children again.
By not doing that, we remove a source of O(n^2) traversal which made hit
testing on deeply nested web pages unbearably slow.
This is a convenience accessor to avoid having to say this everywhere:
result.paintable->layout_node().dom_node()
Instead, you can now do:
result.dom_node()
I came across some websites that change an elements CSS "opacity" in
their :hover selectors. That caused us to relayout on hover, which we'd
like to avoid.
With this patch, we now check if a property only affects the stacking
context tree, and if nothing layout-affecting has changed, we only
invalidate the stacking context tree, causing it to be rebuilt on next
paint or hit test.
This makes :hover { opacity: ... } rules much faster. :^)
There's no actual need to build the stacking context tree before
performing layout. Instead, make it lazy and build the tree when it's
actually needed for something.
This avoids a bunch of work in situations where multiple synchronous
layouts are forced (typically by JavaScript) without painting or hit
testing taking place in between.
It also opens up for style invalidations that only target the stacking
context tree.
We want to return a view to a constant object, not a constant view,
which we can implicitly copy to get a mutable reference to the object.
Clang-Tidy helpfully pointed this out.
The spec says:
> <delim-token> has a value composed of a single code point.
So using StringView is a bit overkill.
This also allows us to use switch statements in the future.
The HTML Specification is quite tricky in this case.
Usually "have a particular element in <x> scope" mentions
"consisting of the following element types:", but in this case it's
"consisting of all element types except the following:"
Thanks to @AtkinsSJ for spotting this difference
run.sh builds i686 by default, and the aarch64 port of serenity
isn't very far along yet.
Without this change, `run.sh` without arguments unceremoniously
fails with:
[0/1] cd .../serenity/Build/i686 && /usr...
ENITY_ARCH=i686 /home/thakis/src/serenity/Meta/run.sh
qemu-system-i386: invalid accelerator kvm
That's because /dev/kvm exists, but that's no good on a non-intel host.
When building on an arm host system, char defaults to unsigned,
leading to errors such as:
serenity/AK/StringBuilder.cpp:198:20:
error: comparison is always true due to limited range of data type
[-Werror=type-limits]
198 | if (ch >= 0 && ch <= 0x1f)
|
Building with -fsigned-char makes things work like on Intel, and
it's what we already do in Kernel/CMakeLists.txt for the same reasons.
- Switch from "Mozilla/4.0" to "Mozilla/5.0" to match other browsers.
- Remove references to KHTML and Gecko.
- Identify ourselves as "LibWeb+LibJS/1.0 Browser/1.0"
New UA: "Mozilla/5.0 (SerenityOS; x86_64) LibWeb+LibJS/1.0 Browser/1.0"
For CSS properties that are known to not affect layout, we can avoid
doing a layout before returning their current resolved value.
It should be enough to only update style for the target element here,
but we don't currently have a mechanism for that.
GlyphMapWidget now reports context menu requests when secondary
clicking the map. This also adds a new Select All action and updates
the Copy Character action to work on multi-glyph selections. Glyph
navigation actions have been moved to a separate Go menu, as is
common in other apps.
Fixes an edge case in which mousing down on the active glyph within
a larger selection would reset the selection but fail to update the
glyph map. Now we can grow or shrink the selection by dragging the
active glyph even after an initial selection is made.
