forked from mirrors/gecko-dev
490d5e355e
There are some mediaqueries-5 features that we still don't support and
explain the remaining failures in at-container-{parsing,serialization}.
Differential Revision: https://phabricator.services.mozilla.com/D144446
34 lines
1 KiB
Rust
34 lines
1 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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//! Common feature values between media and container features.
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/// The orientation media / container feature.
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#[derive(Clone, Copy, Debug, FromPrimitive, Parse, ToCss)]
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#[repr(u8)]
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#[allow(missing_docs)]
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pub enum Orientation {
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Landscape,
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Portrait,
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}
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impl Orientation {
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/// A helper to evaluate a orientation query given a generic size getter.
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pub fn eval<T>(size: euclid::default::Size2D<T>, value: Option<Self>) -> bool
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where
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T: PartialOrd,
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{
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let query_orientation = match value {
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Some(v) => v,
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None => return true,
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};
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// Per spec, square viewports should be 'portrait'
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let is_landscape = size.width > size.height;
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match query_orientation {
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Self::Landscape => is_landscape,
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Self::Portrait => !is_landscape,
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}
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}
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}
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