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Serialize 'minmax(auto, <flex>)' as '<flex>'

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This commit is contained in:
Nazım Can Altınova 2017-07-17 23:18:56 -07:00
parent 638a306168
commit fd184f6b4a
2 changed files with 30 additions and 4 deletions
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32
components/style/values/generics/grid.rs
View file

@ -203,7 +203,7 @@ impl<L: ToComputedValue> ToComputedValue for TrackBreadth<L> {
///
/// https://drafts.csswg.org/css-grid/#typedef-track-size
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
#[derive(Clone, Debug, HasViewportPercentage, PartialEq, ToCss)]
#[derive(Clone, Debug, HasViewportPercentage, PartialEq)]
pub enum TrackSize<L> {
/// A flexible `<track-breadth>`
Breadth(TrackBreadth<L>),
@ -211,12 +211,10 @@ pub enum TrackSize<L> {
/// and a flexible `<track-breadth>`
///
/// https://drafts.csswg.org/css-grid/#valdef-grid-template-columns-minmax
#[css(comma, function)]
Minmax(TrackBreadth<L>, TrackBreadth<L>),
/// A `fit-content` function.
///
/// https://drafts.csswg.org/css-grid/#valdef-grid-template-columns-fit-content
#[css(function)]
FitContent(L),
}
@ -259,6 +257,34 @@ impl<L: PartialEq> TrackSize<L> {
}
}
impl<L: ToCss> ToCss for TrackSize<L> {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
match *self {
TrackSize::Breadth(ref breadth) => breadth.to_css(dest),
TrackSize::Minmax(ref min, ref max) => {
// According to gecko minmax(auto, <flex>) is equivalent to <flex>,
// and both are serialized as <flex>.
if let TrackBreadth::Keyword(TrackKeyword::Auto) = *min {
if let TrackBreadth::Flex(_) = *max {
return max.to_css(dest);
}
}
dest.write_str("minmax(")?;
min.to_css(dest)?;
dest.write_str(", ")?;
max.to_css(dest)?;
dest.write_str(")")
},
TrackSize::FitContent(ref lop) => {
dest.write_str("fit-content(")?;
lop.to_css(dest)?;
dest.write_str(")")
},
}
}
}
impl<L: ToComputedValue> ToComputedValue for TrackSize<L> {
type ComputedValue = TrackSize<L::ComputedValue>;

2
tests/unit/style/parsing/position.rs
View file

@ -237,7 +237,7 @@ fn test_computed_grid_template_rows_colums() {
assert_computed_serialization(grid_template_rows::parse,
"10px repeat(2, 1fr auto minmax(200px, 1fr))",
"10px minmax(auto, 1fr) auto minmax(200px, 1fr) minmax(auto, 1fr) auto minmax(200px, 1fr)");
"10px 1fr auto minmax(200px, 1fr) 1fr auto minmax(200px, 1fr)");
assert_computed_serialization(grid_template_rows::parse,
"subgrid [a] [] repeat(auto-fill, [])", "subgrid [a] [] repeat(auto-fill, [])");