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Implement a MinLength type

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Implement an ExtremumLength type which contains all the enumerated
keyword values for min-width, min-height, max-width, and
max-height. Then, implement a MinLength which can be used for min-width
and min-height. So far this just maps to Gecko values.

Refs #13821.
This commit is contained in:
Ethan Glasser-Camp 2016-11-30 16:14:47 -05:00
parent 063aec5ade
commit 76de979231
9 changed files with 199 additions and 10 deletions
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15
components/style/properties/helpers/animated_properties.mako.rs
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@ -33,6 +33,7 @@ use values::Either;
use values::computed::{Angle, LengthOrPercentageOrAuto, LengthOrPercentageOrNone};
use values::computed::{BorderRadiusSize, ClipRect, LengthOrNone};
use values::computed::{CalcLengthOrPercentage, Context, LengthOrPercentage};
use values::computed::MinLength;
use values::computed::position::{HorizontalPosition, Position, VerticalPosition};
use values::computed::ToComputedValue;
use values::specified::Angle as SpecifiedAngle;
@ -630,6 +631,20 @@ impl Interpolate for LengthOrPercentageOrNone {
}
}
/// https://drafts.csswg.org/css-transitions/#animtype-lpcalc
impl Interpolate for MinLength {
#[inline]
fn interpolate(&self, other: &Self, progress: f64) -> Result<Self, ()> {
match (*self, *other) {
(MinLength::LengthOrPercentage(ref this),
MinLength::LengthOrPercentage(ref other)) => {
this.interpolate(other, progress).map(MinLength::LengthOrPercentage)
}
_ => Err(()),
}
}
}
/// https://drafts.csswg.org/css-transitions/#animtype-number
/// https://drafts.csswg.org/css-transitions/#animtype-length
impl Interpolate for LineHeight {