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add font-stretch to font shorthand sub-property

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modify to_css_declared function

update comment and Err condition
use statement split to two lines
This commit is contained in:
kkkkkkkk 2017-01-21 11:29:36 +08:00
parent 1b68f79468
commit 7c654048d2
1 changed files with 18 additions and 5 deletions
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23
components/style/properties/shorthand/font.mako.rs
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@ -4,21 +4,22 @@
<%namespace name="helpers" file="/helpers.mako.rs" />
<%helpers:shorthand name="font" sub_properties="font-style font-variant font-weight
<%helpers:shorthand name="font" sub_properties="font-style font-variant font-weight font-stretch
font-size line-height font-family"
spec="https://drafts.csswg.org/css-fonts-3/#propdef-font">
use properties::longhands::{font_style, font_variant, font_weight, font_size,
line_height, font_family};
use properties::longhands::{font_style, font_variant, font_weight, font_stretch};
use properties::longhands::{font_size, line_height, font_family};
pub fn parse_value(context: &ParserContext, input: &mut Parser) -> Result<Longhands, ()> {
let mut nb_normals = 0;
let mut style = None;
let mut variant = None;
let mut weight = None;
let mut stretch = None;
let size;
loop {
// Special-case 'normal' because it is valid in each of
// font-style, font-weight and font-variant.
// font-style, font-weight, font-variant and font-stretch.
// Leaves the values to None, 'normal' is the initial value for each of them.
if input.try(|input| input.expect_ident_matching("normal")).is_ok() {
nb_normals += 1;
@ -42,6 +43,12 @@
continue
}
}
if stretch.is_none() {
if let Ok(value) = input.try(|input| font_stretch::parse(context, input)) {
stretch = Some(value);
continue
}
}
size = Some(try!(font_size::parse(context, input)));
break
}
@ -49,7 +56,7 @@
fn count<T>(opt: &Option<T>) -> u8 {
if opt.is_some() { 1 } else { 0 }
}
if size.is_none() || (count(&style) + count(&weight) + count(&variant) + nb_normals) > 3 {
if size.is_none() || (count(&style) + count(&weight) + count(&variant) + count(&stretch) + nb_normals) > 4 {
return Err(())
}
let line_height = if input.try(|input| input.expect_delim('/')).is_ok() {
@ -62,6 +69,7 @@
font_style: style,
font_variant: variant,
font_weight: weight,
font_stretch: stretch,
font_size: size,
line_height: line_height,
font_family: Some(font_family::SpecifiedValue(family))
@ -86,6 +94,11 @@
try!(write!(dest, " "));
}
if let DeclaredValue::Value(ref stretch) = *self.font_stretch {
try!(stretch.to_css(dest));
try!(write!(dest, " "));
}
try!(self.font_size.to_css(dest));
if let DeclaredValue::Value(ref height) = *self.line_height {
match *height {