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Bug 1374233 - Part 2: Add NonNegativeAu.

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Add values::computed::NonNegativeAu, so BorderSideWith could be computed
to this non-negative Au, for the following properties:
1. outline-width
2. border-{*}-width
3. column-rule-width
4. -webkit-text-stroke-width

MozReview-Commit-ID: ASHaB2F7VtM
This commit is contained in:
Boris Chiou 2017-07-20 13:11:37 +08:00
parent 4cc97746f2
commit 191c2a282b
16 changed files with 113 additions and 64 deletions
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9
components/style/values/specified/border.rs
View file

@ -4,11 +4,10 @@
//! Specified types for CSS values related to borders.
use app_units::Au;
use cssparser::Parser;
use parser::{Parse, ParserContext};
use style_traits::ParseError;
use values::computed::{Context, ToComputedValue};
use values::computed::{Context, NonNegativeAu, ToComputedValue};
use values::generics::border::BorderCornerRadius as GenericBorderCornerRadius;
use values::generics::border::BorderImageSideWidth as GenericBorderImageSideWidth;
use values::generics::border::BorderImageSlice as GenericBorderImageSlice;
@ -72,7 +71,7 @@ impl Parse for BorderSideWidth {
}
impl ToComputedValue for BorderSideWidth {
type ComputedValue = Au;
type ComputedValue = NonNegativeAu;
#[inline]
fn to_computed_value(&self, context: &Context) -> Self::ComputedValue {
@ -84,12 +83,12 @@ impl ToComputedValue for BorderSideWidth {
BorderSideWidth::Medium => Length::from_px(3.).to_computed_value(context),
BorderSideWidth::Thick => Length::from_px(5.).to_computed_value(context),
BorderSideWidth::Length(ref length) => length.to_computed_value(context)
}
}.into()
}
#[inline]
fn from_computed_value(computed: &Self::ComputedValue) -> Self {
BorderSideWidth::Length(ToComputedValue::from_computed_value(computed))
BorderSideWidth::Length(ToComputedValue::from_computed_value(&computed.0))
}
}