Stylo: Add constructors for @font-face descriptors
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Part of https://bugzilla.mozilla.org/show_bug.cgi?id=1340728
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Update nsstring.
This should fix bug 1334579
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r? @bholley @heycam or @Manishearth
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Major pain point is that I had to write the bitfield stuff manually, but that
should be resolved soon again.
Now we generate proper layout for _every_ struct, including field offsets \o/.
This introduces a basic framework for servo's style system to be able
to query the style of presentation attributes which it can then insert
into the cascade. It uses that framework to implement the size and
color attributes on <font>.
There are a number of improvements that can be done on top of this:
- Implement all other properties
- Abstractify the ruledata parameter of the mappers using templates or virtual dispatch so that it can be a Servo decl block instead
- Implement aforementiond abstraction over Servo decl blocks (this obsoletes the code in the first item above, so it might just be better to skip that and directly do this)
- Replace uses of nsHTMLStyleSheet with an abstract base class containing common elements between Servo and Gecko
I'd prefer for these to be done in separate steps.
Counter part of bug 1328787 - Stylo: Convert Servo's animation keyframes and store them into Gecko's keyframes
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Reviewed by @heycam, An exception is auto-generated bindgen stuff, I did not include it in patches on bugzilla. The bindgen diff included in this PR was generated with b5c94bad37. It might be bit-rotted.
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Now animation-timing-function in keyframe is stored as specified
TransitionTimingFunction. We need a way to convert it to nsTimingFunction too.
MozReview-Commit-ID: C8j5PmJFm2i
We use TElement::get_animation_rule to get the animation rules from
Gecko side, which contain the interpolated values of the specific
element and the pseudo type.
