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Make use of generics for transform-origin

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This allows us to preserve keywords during serialisation.
This commit is contained in:
Anthony Ramine 2017-05-30 15:38:26 +02:00
parent b42aaf28df
commit 5d70580813
12 changed files with 241 additions and 221 deletions
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90
components/style/properties/longhand/effects.mako.rs
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@ -429,96 +429,6 @@ ${helpers.predefined_type("clip",
}
</%helpers:longhand>
pub struct OriginParseResult {
pub horizontal: Option<specified::LengthOrPercentage>,
pub vertical: Option<specified::LengthOrPercentage>,
pub depth: Option<specified::NoCalcLength>
}
pub fn parse_origin(context: &ParserContext, input: &mut Parser) -> Result<OriginParseResult,()> {
use values::specified::{LengthOrPercentage, Percentage};
let (mut horizontal, mut vertical, mut depth, mut horizontal_is_center) = (None, None, None, false);
loop {
if let Err(_) = input.try(|input| {
let token = try!(input.expect_ident());
match_ignore_ascii_case! {
&token,
"left" => {
if horizontal.is_none() {
horizontal = Some(LengthOrPercentage::Percentage(Percentage(0.0)))
} else if horizontal_is_center && vertical.is_none() {
vertical = Some(LengthOrPercentage::Percentage(Percentage(0.5)));
horizontal = Some(LengthOrPercentage::Percentage(Percentage(0.0)));
} else {
return Err(())
}
},
"center" => {
if horizontal.is_none() {
horizontal_is_center = true;
horizontal = Some(LengthOrPercentage::Percentage(Percentage(0.5)))
} else if vertical.is_none() {
vertical = Some(LengthOrPercentage::Percentage(Percentage(0.5)))
} else {
return Err(())
}
},
"right" => {
if horizontal.is_none() {
horizontal = Some(LengthOrPercentage::Percentage(Percentage(1.0)))
} else if horizontal_is_center && vertical.is_none() {
vertical = Some(LengthOrPercentage::Percentage(Percentage(0.5)));
horizontal = Some(LengthOrPercentage::Percentage(Percentage(1.0)));
} else {
return Err(())
}
},
"top" => {
if vertical.is_none() {
vertical = Some(LengthOrPercentage::Percentage(Percentage(0.0)))
} else {
return Err(())
}
},
"bottom" => {
if vertical.is_none() {
vertical = Some(LengthOrPercentage::Percentage(Percentage(1.0)))
} else {
return Err(())
}
},
_ => return Err(())
}
Ok(())
}) {
match input.try(|input| LengthOrPercentage::parse(context, input)) {
Ok(value) => {
if horizontal.is_none() {
horizontal = Some(value);
} else if vertical.is_none() {
vertical = Some(value);
} else if let LengthOrPercentage::Length(length) = value {
depth = Some(length);
} else {
break;
}
}
_ => break,
}
}
}
if horizontal.is_some() || vertical.is_some() {
Ok(OriginParseResult {
horizontal: horizontal,
vertical: vertical,
depth: depth,
})
} else {
Err(())
}
}
${helpers.single_keyword("mix-blend-mode",
"""normal multiply screen overlay darken lighten color-dodge
color-burn hard-light soft-light difference exclusion hue