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style: Always compute angle values to degrees.

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This matches the spec, https://drafts.csswg.org/css-values/#angles, which says:

> All <angle> units are compatible, and deg is their canonical unit.

And https://drafts.csswg.org/css-values/#compat, which says:

>When serializing computed values [...], compatible units [...] are converted into a single canonical unit.

And also other implementations (Blink always serializes angles as degrees in
computed style for example).

Also allows us to get rid of quite a bit of code, and makes computed angle value
representation just a number, which is nice.

Differential Revision: https://phabricator.services.mozilla.com/D8619
This commit is contained in:
Emilio Cobos Álvarez 2018-10-13 00:41:03 +00:00
parent 11fedf18d9
commit 42def5a011
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11 changed files with 142 additions and 209 deletions
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2
components/style/values/specified/font.rs
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@ -301,7 +301,7 @@ impl SpecifiedFontStyle {
}
fn compute_angle(angle: &Angle) -> ComputedAngle {
ComputedAngle::Deg(Self::compute_angle_degrees(angle))
ComputedAngle::from_degrees(Self::compute_angle_degrees(angle))
}
/// Parse a suitable angle for font-style: oblique.