All callsites already assert, so moving the assertion into the method
should be fine. It is not expected to handle a null image value anyway.
Bug: 1461858
Reviewed-by: emilio
MozReview-Commit-ID: J8CA8m22eSv
There were a check in CssUrl::parse_from_string for extra data, which
was removed as part of servo/servo#16241, so it never fails now.
CssUrl::from_url_value_data doesn't seem to need Result from the very
beginning. It is unclear why it was made that way.
Bug: 1461858
Reviewed-by: emilio
MozReview-Commit-ID: LXzKlZ6wPYW
For now just return sans-serif, though as the FIXME comment indicates we should
probably just carry around the font-name instead.
Bug: 1442195
Reviewed-by: xidorn
MozReview-Commit-ID: CIPbV3R5Ul
This removes some dubious font-family code too.
It ensures that vector longhands have a proper clone implementation
auto-generating it using `collect()`.
Bug: 1461296
Reviewed-by: xidorn
MozReview-Commit-ID: FkdnbTkeF6E
Our implementation is totally not what the spec says, but totally what other
UAs do, see https://github.com/w3c/csswg-drafts/issues/2474.
So given this is causing webcompat pain, I think we should be pragmatic and just
unprefix this.
We could keep serialization and getComputedStyle with ::selection working with a
bit more effort, like we do for :-moz-placeholder, but I'd prefer not doing at
least the serialization bit, and just alias in nsCSSPseudoElements
:-moz-selection to selection too.
Bug: 509958
Reviewed-by: dbaron,xidorn
MozReview-Commit-ID: 6lxctozRDqv
Prior to this change, if none of the fonts specified in CSS contained a
glyph for a codepoint, we tried only one fallback font. If that font
didn't contain the glyph, we'd give up.
With this change, we try multiple fonts in turn. The font names we try
differ across each platform, and based on the codepoint we're trying to
match. The current implementation is heavily inspired by the analogous
code in Gecko, but I've used to ucd lib to make it more readable,
whereas Gecko matches raw unicode ranges.
This fixes some of the issues reported in #17267, although colour emoji
support is not implemented.
== Notes on changes to WPT metadata ==
=== css/css-text/i18n/css3-text-line-break-opclns-* ===
A bunch of these have started failing on macos when they previously
passed.
These tests check that the browser automatically inserts line breaks
near certain characters that are classified as "opening and closing
punctuation". The idea is that if we have e.g. an opening parenthesis,
it does not make sense for it to appear at the end of a line box; it
should "stick" to the next character and go into the next line box.
Before this change, a lot of these codepoints rendered as a missing
glyph on Mac and Linux. In some cases, that meant that the test was
passing.
After this change, a bunch of these codepoints are now rendering glyphs
on Mac (but not Linux). In some cases, the test should continue to pass
where it previously did when rendering with the missing glyph.
However, it seems this has also exposed a layout bug. The "ref" div in
these tests contains a <br> element, and it seems that this, combined
with these punctuation characters, makes the spacing between glyphs ever
so slightly different to the "test" div. (Speculation: might be
something to do with shaping?)
Therefore I've had to mark a bunch of these tests failing on mac.
=== css/css-text/i18n/css3-text-line-break-baspglwj-* ===
Some of these previously passed on Mac due to a missing glyph. Now that
we're rendering the correct glyph, they are failing.
=== css/css-text/word-break/word-break-normal-bo-000.html ===
The characters now render correctly on Mac, and the test is passing. But
we do not find a suitable fallback font on Linux, so it is still failing
on that platform.
=== css/css-text/word-break/word-break-break-all-007.html ===
This was previously passing on Mac, but only because missing character
glyphs were rendered. Now that a fallback font is able to be found, it
(correctly) fails.
=== mozilla/tests/css/font_fallback_* ===
These are new tests added in this commit. 01 and 02 are marked failing
on Linux because the builders don't have the appropriate fonts installed
(that will be a follow-up).
Fix build errors from rebase
FontTemplateDescriptor can no longer just derive(Hash). We need to
implement it on each component part, because the components now
generally wrap floats, which do not impl Hash because of NaN. However in
this case we know that we won't have a NaN, so it is safe to manually
impl Hash.
Inserting a lot of rules in the root level is super-inefficient. This fixes it
by not doing it.
It gives the root rule node to the style, but that's fine, since it's useless.
All this code-path is already pretty messy.
Bug: 1457678
Reviewed-by: xidorn,hiro
MozReview-Commit-ID: GoGHI4YJbKr
It's not sound to insert random matrices in random positions in the transform
operation list.
I cannot make any sense of what the old code was trying to do.
Bug: 1458715
Reviewed-by: hiro
MozReview-Commit-ID: 5BtCiueEPlR
This also changes their ToCss impl to use SequenceWriter instead of
checking has_value manually.
SpecifiedValueInfo for those types are also implemented in this patch.
Bug: 1434130
Reviewed-by: emilio
MozReview-Commit-ID: 23h2VWS417H
This is the basic structure of the stuff. Following patches will fill
the gap between Gecko and Servo on value generating, and finally hook
it into InspectorUtils.
Bug: 1434130
Reviewed-by: emilio
MozReview-Commit-ID: KNLAfFBiY6e
