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Derive ToCss for FontSettings<T>

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This commit is contained in:
Anthony Ramine 2018-03-08 11:18:49 +01:00
parent 91e12563eb
commit 36db6f9cdd
1 changed files with 3 additions and 26 deletions
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29
components/style/values/generics/font.rs
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@ -68,8 +68,9 @@ where
}
/// A value both for font-variation-settings and font-feature-settings.
#[derive(Clone, Debug, Eq, MallocSizeOf, PartialEq, ToComputedValue)]
pub struct FontSettings<T>(pub Box<[T]>);
#[css(comma)]
#[derive(Clone, Debug, Eq, MallocSizeOf, PartialEq, ToComputedValue, ToCss)]
pub struct FontSettings<T>(#[css(if_empty = "normal", iterable)] pub Box<[T]>);
impl<T> FontSettings<T> {
/// Default value of font settings as `normal`.
@ -96,30 +97,6 @@ impl<T: Parse> Parse for FontSettings<T> {
}
}
impl<T: ToCss> ToCss for FontSettings<T> {
/// https://drafts.csswg.org/css-fonts-4/#descdef-font-face-font-feature-settings
/// https://drafts.csswg.org/css-fonts-4/#font-variation-settings-def
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
where
W: Write,
{
if self.0.is_empty() {
return dest.write_str("normal");
}
let mut first = true;
for item in self.0.iter() {
if !first {
dest.write_str(", ")?;
}
first = false;
item.to_css(dest)?;
}
Ok(())
}
}
/// A font four-character tag, represented as a u32 for convenience.
///
/// See: