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/* 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
//! Animation implementations for text-related types.
use super::{Animate, Procedure, ToAnimatedZero};
use crate::values::computed::LengthPercentage;
use crate::values::{ComputeSquaredDistance, MallocSizeOf, SquaredDistance};
/// A `text-decoration-inset` value for animation: we resolve `auto` to a pair of lengths,
/// but record whether the original value was actually `auto`.
#[derive(Clone, Debug, MallocSizeOf, PartialEq)]
pub struct TextDecorationInset {
/// The inset at the start of the decoration.
pub start: LengthPercentage,
/// The inset at the end of the decoration.
pub end: LengthPercentage,
/// Whether this represents a resolved `auto` value.
pub is_auto: bool,
}
impl Animate for TextDecorationInset {
fn animate(&self, other: &Self, procedure: Procedure) -> Result<Self, ()> {
Ok(if self.is_auto && other.is_auto {
self.clone()
} else {
Self {
start: self.start.animate(&other.start, procedure)?,
end: self.end.animate(&other.end, procedure)?,
is_auto: false,
}
})
}
}
impl ComputeSquaredDistance for TextDecorationInset {
#[inline]
fn compute_squared_distance(&self, other: &Self) -> Result<SquaredDistance, ()> {
Ok(if self.is_auto && other.is_auto {
SquaredDistance::from_sqrt(0.)
} else {
self.start.compute_squared_distance(&other.start)?
+ self.end.compute_squared_distance(&other.end)?
})
}
}
impl ToAnimatedZero for TextDecorationInset {
#[inline]
fn to_animated_zero(&self) -> Result<Self, ()> {
Ok(Self {
start: self.start.to_animated_zero()?,
end: self.end.to_animated_zero()?,
is_auto: false,
})
}
}