This significantly reduces realloc time at the expense of some additional
mmemmoves, but pencils out to a small win on my machine.
We wanted to do this anyway, and this avoids needing to remove the smallvec
dependency from Selectors and then add it back again.
MozReview-Commit-ID: HW4kDxzLACp
This improves cache locality and reduces allocations during parsing.
Note that this reverses the iteration order within a sequence of simple selectors,
but that shouldn't matter.
debug_assertions is not a reliable guide to whether Gecko C++ code is
being compiled with debugging assertions, since we can now compile Gecko
with --enable-optimize --disable-debug --enable-rust-debug: Gecko will
be compiled without debugging assertions (and debugging struct layouts)
and Rust code will be compiled with debug_assertions. The struct
mismatches in the binding layer lead to startup crashes.
This feature is not presently used, but will be set by some Gecko-side
changes and then used by some Servo-side changes. These changes need to
be made first so that CI on both sides works correctly at all
intermediate stages along the way.
Eliminate ScrollRootId
Just use WebRender's ClipId directly. This will allow us to create and
use ReferenceFrames in the future, if we need to do that. It will also
make it easier to have Servo responsible for creating the root
scrolling area, which will allow removing some old hacks in the future.
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Just use WebRender's ClipId directly. This will allow us to create and
use ReferenceFrames in the future, if we need to do that. It will also
make it easier to have Servo responsible for creating the root
scrolling area, which will allow removing some old hacks in the future.
Fix namespaces of elements created in XML documents
Correctly implement following step of [Dom Document Spec](https://dom.spec.whatwg.org/#dom-document-createelement):
> Let namespace be the HTML namespace, if the context object is an HTML document or context object’s content type is "application/xhtml+xml", and null otherwise.
Note, this will make following test in `tests/wpt/web-platform-tests/dom/nodes/Document-constructor.html` to fail, so related .ini file added to mark it as such:
```
test(function() {
var doc = new Document();
var a = doc.createElement("a");
// In UTF-8: 0xC3 0xA4
a.href = "http://example.org/?\u00E4";
assert_equals(a.href, "http://example.org/?%C3%A4");
}, "new Document(): URL parsing")
```
I'm not very familiar with specs, but from quick look at it, I'm doubtfull that it is valid in the first place. This is an "application/xml" document, so I don't see why it should encode a.href. Firefox also fails that.
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scriptlevel is a property that affects how font-size is inherited. If scriptlevel is
+1, for example, it will inherit as the script size multiplier times
the parent font. This does not affect cases where the font-size is
explicitly set.
However, this transformation is not allowed to reduce the size below
scriptminsize. If this inheritance will reduce it to below
scriptminsize, it will be set to scriptminsize or the parent size,
whichever is smaller (the parent size could be smaller than the min size
because it was explicitly specified).
Now, within a node that has inherited a font-size which was
crossing scriptminsize once the scriptlevel was applied, a negative
scriptlevel may be used to increase the size again.
This should work, however if we have already been capped by the
scriptminsize multiple times, this can lead to a jump in the size.
For example, if we have text of the form:
huge large medium small tiny reallytiny tiny small medium huge
which is represented by progressive nesting and scriptlevel values of
+1 till the center after which the scriptlevel is -1, the "tiny"s should
be the same size, as should be the "small"s and "medium"s, etc.
However, if scriptminsize kicked it at around "medium", then
medium/tiny/reallytiny will all be the same size (the min size).
A -1 scriptlevel change after this will increase the min size by the
multiplier, making the second tiny larger than medium.
Instead, we wish for the second "tiny" to still be capped by the script
level, and when we reach the second "large", it should be the same size
as the original one.
We do this by cascading two separate font sizes. The font size (mSize)
is the actual displayed font size. The unconstrained font size
(mScriptUnconstrainedSize) is the font size in the situation where
scriptminsize never applied.
We calculate the proposed inherited font size based on scriptlevel and
the parent unconstrained size, instead of using the parent font size.
This is stored in the node's unconstrained size and will also be stored
in the font size provided that it is above the min size.
All of this only applies when inheriting. When the font size is
manually set, scriptminsize does not apply, and both the real and
unconstrained size are set to the explicit value. However, if the font
size is manually set to an em or percent unit, the unconstrained size
will be set to the value of that unit computed against the parent
unconstrained size, whereas the font size will be set computing against
the parent font size.
MozReview-Commit-ID: 820BIWqno3L
Add `inline-axis` and `block-axis` aliases for `-moz-box-orient`.
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This issue is reported at https://bugzilla.mozilla.org/show_bug.cgi?id=1355005.
spec: https://developer.mozilla.org/en-US/docs/Web/CSS/box-orient
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stylo: Implement -moz-transform property
-moz-transform property is an alias shorthand property. It has transform as sub-property but their parsing is different in some cases(matrix/matrix3d). -moz-transform also accepts LengthOrPercentage in the nondiagonal homogeneous components of matrix and matrix3d.
It looks like length and percentage values are getting computed to number directly. For example 120px converts into 120 and calc(120px + 20%) converts into 140. So I did like this. But we need to check this behavior again to be sure, I guess.
Also I spent half day investigating why matrices are not serializing after this change and found out their ToCss functions is not completely implemented yet 😄 I was going to implement them but there is an easy issue about it(#15194) so I left it that way. Probably all tests won't pass without it.
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Create proper root ClipId when scrolling from script
WebRender currently makes a distinction between an external ClipId with
id equal to 0 and the root scroll ClipId. We need to detect this
situation and properly form the ClipId for the root.
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WebRender currently makes a distinction between an external ClipId with
id equal to 0 and the root scroll ClipId. We need to detect this
situation and properly form the ClipId for the root.
stylo: Bug 1353628 - Support shorthand properties for CSS Transition.
These patches add shorthand properties into TransitionProperty, so we can parse the shorthand properties properly and create transitions for them.
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stylo: Bug 1357671 - Make animation_type of logical properties be None.
Logical properties will be animatable (with discrete type), but for now, it is still non-animatable, so we assign "None" to the animation_type.
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In order to make TransitionProperty::parse() also work on shorthands, we
should add shorthands into TransitionProperty, and add the arms in other
functions which match TransitionProperty.
MozReview-Commit-ID: KFd26KcQf3N
Logical properties will be animatable (with discrete type), but for now
it is still non-animatable, so we assign "None" to the animation_type.
MozReview-Commit-ID: HRYwIhKkpoW
stylo: Centralize stylesheet handling.
This is needed for both bug 1357461 and bug 1273303, where I plan to add smarter
invalidations than what we have now.
Also, it's cleaner.
Ideally I'll move this onto stylist, though that may require extra work to make
it work fine for Servo, so for now let's just do the obvious thing.
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Make tidy check that opening and closing braces that begin a line do …
…so with proper alignment.
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This is needed for both bug 1357461 and bug 1273303, where I plan to add smarter
invalidations than what we have now.
Also, it's cleaner.
Ideally I'll move this onto stylist, though that may require extra work to make
it work fine for Servo, so for now let's just do the obvious thing.
