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Add font-size absolute size keywords. Fix #3417.

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Relative size keywords are still missing:
https://github.com/servo/servo/issues/3423
This commit is contained in:
Simon Sapin 2014-09-19 14:27:30 +01:00
parent 010d87b93e
commit 4e71b215b8
7 changed files with 47 additions and 49 deletions
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29
components/style/properties/mod.rs.mako
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@ -904,8 +904,9 @@ pub mod longhands {
use super::super::Au;
pub type T = Au;
}
static MEDIUM_PX: int = 16;
#[inline] pub fn get_initial_value() -> computed_value::T {
Au::from_px(16) // medium
Au::from_px(MEDIUM_PX)
}
#[inline]
pub fn to_computed_value(_value: SpecifiedValue, context: &computed::Context)
@ -913,16 +914,26 @@ pub mod longhands {
// We already computed this element's font size; no need to compute it again.
return context.font_size
}
/// <length> | <percentage>
/// TODO: support <absolute-size> and <relative-size>
/// <length> | <percentage> | <absolute-size>
/// TODO: support <relative-size>
pub fn from_component_value(input: &ComponentValue, _base_url: &Url)
-> Result<SpecifiedValue, ()> {
specified::LengthOrPercentage::parse_non_negative(input).map(|value| {
match value {
specified::LP_Length(value) => value,
specified::LP_Percentage(value) => specified::Em(value),
}
})
match specified::LengthOrPercentage::parse_non_negative(input) {
Ok(specified::LP_Length(value)) => return Ok(value),
Ok(specified::LP_Percentage(value)) => return Ok(specified::Em(value)),
Err(()) => (),
}
let au = match try!(get_ident_lower(input)).as_slice() {
"xx-small" => Au::from_px(MEDIUM_PX) * 3 / 5,
"x-small" => Au::from_px(MEDIUM_PX) * 3 / 4,
"small" => Au::from_px(MEDIUM_PX) * 8 / 9,
"medium" => Au::from_px(MEDIUM_PX),
"large" => Au::from_px(MEDIUM_PX) * 6 / 5,
"x-large" => Au::from_px(MEDIUM_PX) * 3 / 2,
"xx-large" => Au::from_px(MEDIUM_PX) * 2,
_ => return Err(())
};
Ok(specified::Au_(au))
}
</%self:single_component_value>