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Import victor's layout system 🍷

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This commit is contained in:
Anthony Ramine 2019-09-09 17:21:26 +02:00
parent 86904757e6
commit 4444c5a2ad
25 changed files with 1270 additions and 712 deletions
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33
components/style/values/generics/length.rs
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@ -69,6 +69,39 @@ impl<LengthPercentage> LengthPercentageOrAuto<LengthPercentage> {
}
}
impl<LengthPercentage> LengthPercentageOrAuto<LengthPercentage>
where
LengthPercentage: Clone,
{
/// Resolves `auto` values by calling `f`.
#[inline]
pub fn auto_is(&self, f: impl Fn() -> LengthPercentage) -> LengthPercentage {
match self {
LengthPercentageOrAuto::LengthPercentage(length) => length.clone(),
LengthPercentageOrAuto::Auto => f(),
}
}
/// Returns the non-`auto` value, if any.
#[inline]
pub fn non_auto(&self) -> Option<LengthPercentage> {
match self {
LengthPercentageOrAuto::LengthPercentage(length) => Some(length.clone()),
LengthPercentageOrAuto::Auto => None,
}
}
/// Maps the length of this value.
pub fn map(&self, f: impl FnOnce(LengthPercentage) -> LengthPercentage) -> Self {
match self {
LengthPercentageOrAuto::LengthPercentage(l) => {
LengthPercentageOrAuto::LengthPercentage(f(l.clone()))
},
LengthPercentageOrAuto::Auto => LengthPercentageOrAuto::Auto,
}
}
}
impl<LengthPercentage: Zero> Zero for LengthPercentageOrAuto<LengthPercentage> {
fn zero() -> Self {
LengthPercentageOrAuto::LengthPercentage(Zero::zero())