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
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.
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 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
System font keywords are not a valid value for those properties.
The newly-added #[css(skip)] would be reused by deriving algorithm of
SpecifiedValueInfo to skip them as well.
Bug: 1434130
Reviewed-by: emilio
MozReview-Commit-ID: EmnhkaA9RR5
Shipped since Firefox 48, other browsers have similar impls, and the related
spec has been in CR since a while ago.
The syntax of this property as implemented should be considered to be pretty
stable, so we can remove this pref.
Bug: 1417761
Reviewed-by: xidorn
MozReview-Commit-ID: H7lDsdbUamD
Most of types just derive it using proc_macro directly. Some of value
types need manual impl.
In my current plan, this new trait will be used in bug 1434130 to expose
values as well.
Bug: 1455576
Reviewed-by: emilio
MozReview-Commit-ID: LI7fy45VkRw
These won't "just work", pending changes from bug 1436048 to use a floating
point representation for those.
Bug: 1454883
Reviewed-by: xidorn
MozReview-Commit-ID: Bi5iTdFreMA
Update to smallbitvec 2.1
---
- [x] `./mach build -d` does not report any errors
- [x] `./mach build-geckolib` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes do not require tests because covered by existing tests
<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/20662)
<!-- Reviewable:end -->
