servo/components/style/values/generics/gecko.rs
Anthony Ramine 43a5257a0c Introduce #[css(function)] for #[derive(ToCss)]
Any variant with this attribute gets serialised as a CSS function,
using the variant name as the function name.
2017-06-13 10:19:23 +02:00

33 lines
1,007 B
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//! Generic types for legacy Gecko-only properties that should probably be
//! unshipped at some point in the future.
/// A generic value for scroll snap points.
#[derive(Clone, Copy, Debug, HasViewportPercentage, PartialEq, ToComputedValue, ToCss)]
pub enum ScrollSnapPoint<LengthOrPercentage> {
/// `none`
None,
/// `repeat(<length-or-percentage>)`
#[css(function)]
Repeat(LengthOrPercentage)
}
impl<L> ScrollSnapPoint<L> {
/// Returns `none`.
#[inline]
pub fn none() -> Self {
ScrollSnapPoint::None
}
/// Returns the repeat argument, if any.
#[inline]
pub fn repeated(&self) -> Option<&L> {
match *self {
ScrollSnapPoint::None => None,
ScrollSnapPoint::Repeat(ref length) => Some(length),
}
}
}