Implement ::first-line support in stylo
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Fixes Gecko bug 1324619.
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style: Remove now-unused empty Variables struct.
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The `Servo_GetEmptyVariables` FFI function no longer has any callers from Gecko, so we can remove it and the code that creates/frees that struct.
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stylo: Fix compute_squared_distance for AnimatedFilterList
We implement compute_distance for Angle to avoid returning Err(()) from it, and then rewrite compute_squared_distance of AnimatedFilterLIst to avoid using unwrap() and make it simpler.
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- [X] These changes fix [Bug 1384014](https://bugzilla.mozilla.org/show_bug.cgi?id=1384014).
- [X] These changes do not require tests because there is a DevTools test for this already.
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We already have a more-specific check further down in the file, which was added in the same revision.
I think this one was erroneous.
MozReview-Commit-ID: CnP0zCpBtnp
stylo: remove bogus optimization check in replace_rules() for visited styles.
We skipped updating the rule nodes for visited rules during animation-only restyle.
However, this causes isseus that visited style overrides animation styles on visited element.
So, it turns out that we should update the visited rules even during animation-only restyle.
Gecko bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1381235
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We skipped updating the rule nodes for visited rules during animation-only restyle.
However, this causes isseus that visited style overrides animation styles on visited element.
So, it turns out that we should update the visited rules even during animation-only restyle.
Gecko bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1381235
When computing the distance between two filter functions, e.g.
HueRotate(0deg) and HueRotate(-360deg), we got an Err(()) and unwrap it
immediately in compute_filter_square_distance(), which causes a crash.
The root-cause is that we don't implement computed_distance of Angle, and we
assume we always get a valid result from compute_squared_distance() for
each filter function.
stylo: call update_border_foo when inheriting borders too
this fixes the reftest failure in layout/reftests/bugs/731521-1.html
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In the case where we accumulate transform:none onto decomposed matrix for
iteration composite whose iteration count is over 2, we pass zero
other_portion and self_portion which is over 1.0. We should care about the
case.
Add support for having two separate parent styles. Fixes gecko bug 1382806.
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This is needed for ::first-line support. See https://drafts.csswg.org/css-pseudo-4/#first-line-inheritance
This PR doesn't quite implement what the CSS spec draft says right now. It implements what Gecko does, which is what an earlier draft said.
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- [X] These changes do not require tests because servo doesn't support ::first-line yet
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Cleanup @font-face rule constructor
Passing SourceLocation into constructor instead of assigning
immediately after construction cleans up the code and helps to
prevent leaving an invalid SourceLocation in the future.
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Passing SourceLocation into constructor instead of assigning
immediately after construction cleans up the code and helps to
prevent leaving an invalid SourceLocation in the future.
The concept of inherited style is about to get a bit more complicated, and this
will prevent consumers from doing it wrong.
Part 1 of Gecko bug1382806. r=emilio
Add message suffixes to stylo error reports.
This is the Servo-side part of https://bugzilla.mozilla.org/show_bug.cgi?id=1381137. This allows us to add the "Declaration dropped" or "Skipped to next declaration" messages after relevant CSS errors that are reported.
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style: Don't skip computation of pseudo-elements of display: none elements
We have optimizations to avoid doing selector-matching when the style attribute
changes, so, given you can toggle the display property and the pseudo-elements
will suddenly become effective, we can't really skip them.
Furthermore, we assume that if an element has an ElementStyles, they're
up-to-date and we can use them for getComputedStyle, so it's pretty easy to
prove that we do the wrong thing when calling getComputedStyle with a
pseudo-element on a display: none root.
Bug: 1384065
Reviewed-by: heycam
MozReview-Commit-ID: BIOqevGZyrm
We have optimizations to avoid doing selector-matching when the style attribute
changes, so, given you can toggle the display property and the pseudo-elements
will suddenly become effective, we can't really skip them.
Furthermore, we assume that if an element has an ElementStyles, they're
up-to-date and we can use them for getComputedStyle, so it's pretty easy to
prove that we do the wrong thing when calling getComputedStyle with a
pseudo-element on a display: none root.
Bug: 1384065
Reviewed-by: heycam
MozReview-Commit-ID: BIOqevGZyrm
