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Add support for the ch unit in calc()

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This commit is contained in:
Simon Sapin 2015-09-01 18:45:14 +02:00
parent 80d471d5cf
commit b30c4f70f9
1 changed files with 8 additions and 3 deletions
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11
components/style/values.rs
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@ -424,6 +424,7 @@ pub mod specified {
pub vmax: Option<ViewportPercentageLength>,
pub em: Option<FontRelativeLength>,
pub ex: Option<FontRelativeLength>,
pub ch: Option<FontRelativeLength>,
pub rem: Option<FontRelativeLength>,
pub percentage: Option<Percentage>,
}
@ -584,6 +585,7 @@ pub mod specified {
let mut vmin = None;
let mut em = None;
let mut ex = None;
let mut ch = None;
let mut rem = None;
let mut percentage = None;
let mut number = None;
@ -611,6 +613,8 @@ pub mod specified {
em = Some(em.unwrap_or(0.) + val),
FontRelativeLength::Ex(val) =>
ex = Some(ex.unwrap_or(0.) + val),
FontRelativeLength::Ch(val) =>
ch = Some(ch.unwrap_or(0.) + val),
FontRelativeLength::Rem(val) =>
rem = Some(rem.unwrap_or(0.) + val),
},
@ -627,6 +631,7 @@ pub mod specified {
vmin: vmin.map(ViewportPercentageLength::Vmin),
em: em.map(FontRelativeLength::Em),
ex: ex.map(FontRelativeLength::Ex),
ch: ex.map(FontRelativeLength::Ch),
rem: rem.map(FontRelativeLength::Rem),
percentage: percentage.map(Percentage),
})
@ -668,14 +673,14 @@ pub mod specified {
};
}
let count = count!(em, ex, absolute, rem, vh, vmax, vmin, vw, percentage);
let count = count!(em, ex, ch, absolute, rem, vh, vmax, vmin, vw, percentage);
assert!(count > 0);
if count > 1 {
try!(write!(dest, "calc("));
}
serialize!(em, ex, absolute, rem, vh, vmax, vmin, vw, percentage);
serialize!(em, ex, ch, absolute, rem, vh, vmax, vmin, vw, percentage);
if count > 1 {
try!(write!(dest, ")"));
@ -1329,7 +1334,7 @@ pub mod computed {
val.to_computed_value(context.viewport_size));
}
}
for val in &[self.em, self.ex, self.rem] {
for val in &[self.em, self.ex, self.ch, self.rem] {
if let Some(val) = *val {
length = Some(length.unwrap_or(Au(0)) +
val.to_computed_value(context.font_size, context.root_font_size));