8dfcebf0cd
I also update the wpt becasue it seems the original one lets <ratio> support the addition. However, the spec says "Addition of <ratio>s is not possible". Differential Revision: https://phabricator.services.mozilla.com/D106219
51 lines
1.4 KiB
Rust
51 lines
1.4 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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//! Generic types for CSS values related to <ratio>.
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//! https://drafts.csswg.org/css-values/#ratios
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use std::fmt::{self, Write};
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use style_traits::{CssWriter, ToCss};
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/// A generic value for the `<ratio>` value.
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#[derive(
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Clone,
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Copy,
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Debug,
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MallocSizeOf,
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PartialEq,
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SpecifiedValueInfo,
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ToComputedValue,
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ToResolvedValue,
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ToShmem,
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)]
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#[repr(C)]
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pub struct Ratio<N>(pub N, pub N);
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impl<N> ToCss for Ratio<N>
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where
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N: ToCss,
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{
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fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
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where
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W: Write,
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{
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self.0.to_css(dest)?;
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// Even though 1 could be omitted, we don't per
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// https://drafts.csswg.org/css-values-4/#ratio-value:
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//
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// The second <number> is optional, defaulting to 1. However,
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// <ratio> is always serialized with both components.
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//
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// And for compat reasons, see bug 1669742.
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//
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// We serialize with spaces for consistency with all other
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// slash-delimited things, see
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// https://github.com/w3c/csswg-drafts/issues/4282
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dest.write_str(" / ")?;
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self.1.to_css(dest)?;
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Ok(())
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}
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}
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