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Implement Calc for LengthOrPercentageOrAuto

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This commit is contained in:
David Zbarsky 2015-08-11 21:08:05 -04:00
parent 9556141e57
commit cb4d878169
7 changed files with 44 additions and 0 deletions
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13
components/style/values.rs
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@ -490,6 +490,7 @@ pub mod specified {
Length(Length),
Percentage(CSSFloat), // [0 .. 100%] maps to [0.0 .. 1.0]
Auto,
Calc(Calc),
}
impl ToCss for LengthOrPercentageOrAuto {
@ -499,6 +500,7 @@ pub mod specified {
&LengthOrPercentageOrAuto::Percentage(percentage)
=> write!(dest, "{}%", percentage * 100.),
&LengthOrPercentageOrAuto::Auto => dest.write_str("auto"),
&LengthOrPercentageOrAuto::Calc(calc) => calc.to_css(dest),
}
}
}
@ -516,6 +518,10 @@ pub mod specified {
Ok(LengthOrPercentageOrAuto::Length(Length::Absolute(Au(0)))),
Token::Ident(ref value) if value.eq_ignore_ascii_case("auto") =>
Ok(LengthOrPercentageOrAuto::Auto),
Token::Function(ref name) if name.eq_ignore_ascii_case("calc") => {
let calc = try!(input.parse_nested_block(Calc::parse));
Ok(LengthOrPercentageOrAuto::Calc(calc))
},
_ => Err(())
}
}
@ -1122,6 +1128,7 @@ pub mod computed {
Length(Au),
Percentage(CSSFloat),
Auto,
Calc(Calc),
}
impl fmt::Debug for LengthOrPercentageOrAuto {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
@ -1129,6 +1136,8 @@ pub mod computed {
&LengthOrPercentageOrAuto::Length(length) => write!(f, "{:?}", length),
&LengthOrPercentageOrAuto::Percentage(percentage) => write!(f, "{}%", percentage * 100.),
&LengthOrPercentageOrAuto::Auto => write!(f, "auto"),
// XXX HACK WRONG
&LengthOrPercentageOrAuto::Calc(calc) => write!(f, "{}%", 100.),
}
}
}
@ -1148,6 +1157,9 @@ pub mod computed {
specified::LengthOrPercentageOrAuto::Auto => {
LengthOrPercentageOrAuto::Auto
}
specified::LengthOrPercentageOrAuto::Calc(calc) => {
LengthOrPercentageOrAuto::Calc(calc.to_computed_value(context))
}
}
}
}
@ -1159,6 +1171,7 @@ pub mod computed {
&LengthOrPercentageOrAuto::Percentage(percentage)
=> write!(dest, "{}%", percentage * 100.),
&LengthOrPercentageOrAuto::Auto => dest.write_str("auto"),
&LengthOrPercentageOrAuto::Calc(calc) => calc.to_css(dest),
}
}
}