For a long time, we've used two terms, inconsistently:
- "Identifier" is a spec term, but refers to a sequence of alphanumeric
characters, which may or may not be a keyword. (Keywords are a
subset of all identifiers.)
- "ValueID" is entirely non-spec, and is directly called a "keyword" in
the CSS specs.
So to avoid confusion as much as possible, let's align with the spec
terminology. I've attempted to change variable names as well, but
obviously we use Keywords in a lot of places in LibWeb and so I may
have missed some.
One exception is that I've not renamed "valid-identifiers" in
Properties.json... I'd like to combine that and the "valid-types" array
together eventually, so there's no benefit to doing an extra rename
now.
The `start` and `end` value set the text alignment based on the computed
value of `direction`. The default value of `text-align` is now `start`
instead of `left`.
If given, the spec expects the input URL to be manipulated on the fly
as it is being parsed, and may ignore any errors thrown by the URL
parser.
Previously, we were not exactly following the specs assumption here
which resulted in us needed to make awkward copies of the URL in these
situations.
For most cases this is not an issue. But it does cause problems for
situations where URL parsing would result in a failure (which is
ignored by the caller), and the URL is _partially_ updated
while parsing.
Such a situation can occur when setting the host of an href alongside a
port number which is not valid. It is expected that this situation will
result in the host being updates - but not the port number.
Adjust the URL parser API so that it mutates the URL given (if any), and
adjust the callers accordingly.
Fixes two tests on https://wpt.live/url/url-setters-a-area.window.html
This isn't an issue now because this is only invoked from a macro that
is expanded within this file. But in an upcoming commit, it will be
invoked from a helper function in the Test namespace. At that point, the
compiler complains about the comparitor not being found (and helpfully
indicates we should move this one to the AK namespace to allow ADL to
succeed).
Otherwise, the following code would not compile:
constexpr Array<int, 3> array { 4, 5, 6 };
Vector<int> vector { 4, 5, 6 };
if (array == vector.span()) { }
We do such comparisons in tests quite a bit. But it currently doesn't
become an issue because of the way EXPECT_EQ copies its input parameters
to non-const locals. In a future patch, that copying will be removed,
and the compiler would otherwise complain about not finding a suitable
comparison operator.
Because the type returned by to_string is a String, _not_ an
Optional<String>, the following code:
if (serialized_query.is_empty())
serialized_query = {};
Was achieving nothing at all! Make sure that the type is an
Optional<String> so that we're not just setting an empty string to an
empty string.
Quick sort is not a stable sort. This meant we had a subtle issue
implementing this portion of the spec comment:
> The relative order between name-value pairs with equal names must
> be preserved.
Switch to insertion sort which is a stable sort, and properly handles
keys which are the same.
Fixes 8 tests on https://wpt.live/url/urlsearchparams-sort.any.html
This fixes a crash using URLSearchParams when provided a percent encoded
string which does not percent decode to valid UTF-8.
Fixes a crash running https://wpt.live/url/urlencoded-parser.any.html
While introducing clip and scroll frame trees, I made a mistake by
assuming that the paintable tree includes boxes from nested navigables.
Therefore, this comment in the code was incorrect, and clip/scroll
frames were simply not assigned for iframes:
// NOTE: We only need to refresh the scroll state for traversables
// because they are responsible for tracking the state of all
// nested navigables.
As a result, anything with "overflow: scroll" is currently not
scrollable inside an iframe
This change fixes that by ensuring clip and scroll frames are assigned
and refreshed for each navigable. To achieve this, I had to modify the
display list building process to record a separate display list for each
navigable. This is necessary because scroll frame ids are local to a
navigable, making it impossible to call
`DisplayList::apply_scroll_offsets()` on a display list that contains
ids from multiple navigables.
In calculating the base size of a flex item, we have a piece of ad-hoc
code that deals with an item that does have an instrinsic aspect ratio,
but not a cross size to resolve that ratio against. In determining the
actual flex item size however, we also take into account the minimum
content width and height, which assumes the box' intrinsic width or
height when available. This would break having an image as a flex item,
which gets stretched to its maximum size within the flex container
instead of the flex item being shrunk to the instrinsic size of the
image.
Fix this by only stretching flex items that do not have an instrinsic
width nor height set.
Implements the corresponding encoders, selects the appropriate one when
encoding URL search params. If an encoder for the given encoding could
not be found, fallback to utf-8.
USVString is defined in the IDL spec as:
> The USVString type corresponds to scalar value strings. Depending on
> the context, these can be treated as sequences of either 16-bit
> unsigned integer code units or scalar values.
This means we need to account for surrogate code points by using the
replacement character.
This fixes the last test in https://wpt.live/url/url-constructor.any.html
When converting a `Gfx::Bitmap` to a Skia bitmap, we cannot assume the
color data is unpremultiplied. For example, everything canvas-related
uses premultiplied color data:
https://html.spec.whatwg.org/multipage/canvas.html#premultiplied-alpha-and-the-2d-rendering-context
We were probably assuming unpremultiplied since that is what the PNG
decoder gives us. Since we now make `Gfx::Bitmap` identify what alpha
type is being used, we can instruct Skia a bit better :^)
Update our `EdgeFlagPathRasterizer` to use premultiplied alpha instead
of unpremultiplied so we can apply alpha correctly for path masks.
This fixes the dark borders sometimes visible when SVGs are blended
with a colored background.
This also exposed an issue with our `CanvasRenderingContext2D`, which is
supposed to hold a bitmap with premultiplied alpha internally but expose
a bitmap with unpremultiplied alpha in `CanvasImageData`. Expand our C2D
test to include the alpha channel as well.
Finally, this also exposed an off-by-one issue in
`EdgeFlagPathRasterizer` which caused the last scanlines for edges to
render incorrectly. We had some reference images which included these
corruptions (they were almost unnoticeable), so update them as well.
Right now, we deviate from the CSSOM spec regarding our
CSSStyleDeclaration classes, so this is not as close to the spec as I'd
like. But it works, which means we'll be able to test pseudo-element
styling a lot more easily. :^)
