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style: Support keywords [x|y|z] on rotate.

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Update the parser and the serialization to support the keywords, [x|y|z].

Differential Revision: https://phabricator.services.mozilla.com/D11531
This commit is contained in:
Boris Chiou 2018-11-13 18:37:14 +00:00 • committed by Emilio Cobos Álvarez
parent f486ef7e47
commit 41d2f7f3a2
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GPG key ID: 056B727BB9C1027C
4 changed files with 85 additions and 8 deletions
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12
components/style/values/computed/mod.rs
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@ -8,6 +8,7 @@ use super::animated::ToAnimatedValue;
use super::generics::grid::GridTemplateComponent as GenericGridTemplateComponent;
use super::generics::grid::{GridLine as GenericGridLine, TrackBreadth as GenericTrackBreadth};
use super::generics::grid::{TrackList as GenericTrackList, TrackSize as GenericTrackSize};
use super::generics::transform::IsParallelTo;
use super::generics::{GreaterThanOrEqualToOne, NonNegative};
use super::specified;
use super::{CSSFloat, CSSInteger};
@ -22,6 +23,7 @@ use crate::Atom;
#[cfg(feature = "servo")]
use crate::Prefix;
use euclid::Size2D;
use self::transform::DirectionVector;
use std::cell::RefCell;
use std::cmp;
use std::f32;
@ -459,6 +461,16 @@ trivial_to_computed_value!(Box<str>);
/// A `<number>` value.
pub type Number = CSSFloat;
impl IsParallelTo for (Number, Number, Number) {
fn is_parallel_to(&self, vector: &DirectionVector) -> bool {
use euclid::approxeq::ApproxEq;
// If a and b is parallel, the angle between them is 0deg, so
// a x b = |a|*|b|*sin(0)*n = 0 * n, |a x b| == 0.
let self_vector = DirectionVector::new(self.0, self.1, self.2);
self_vector.cross(*vector).square_length().approx_eq(&0.0f32)
}
}
/// A wrapper of Number, but the value >= 0.
pub type NonNegativeNumber = NonNegative<CSSFloat>;