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67f2185f54
According to the spec: https://compat.spec.whatwg.org/#css-media-queries-webkit-device-pixel-ratio And to the Chromium implementation: https://cs.chromium.org/chromium/src/third_party/blink/renderer/core/css/media_query_evaluator.cc?l=366&rcl=1d7328865bcf06a687aafc18ff95d55317030672 They're no different than resolution. In our implementation `resolution` does slightly different stuff. Given we still haven't shipped -webkit-device-pixel-ratio, making this match resolution looks better than the opposite. Differential Revision: https://phabricator.services.mozilla.com/D3588
54 lines
1.3 KiB
Rust
54 lines
1.3 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 http://mozilla.org/MPL/2.0/. */
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//! Resolution values:
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//!
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//! https://drafts.csswg.org/css-values/#resolution
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use std::fmt::{self, Write};
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use style_traits::{CssWriter, ToCss};
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use values::CSSFloat;
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use values::computed::{Context, ToComputedValue};
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use values::specified;
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/// A computed `<resolution>`.
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pub struct Resolution(CSSFloat);
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impl Resolution {
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/// Returns this resolution value as dppx.
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#[inline]
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pub fn dppx(&self) -> CSSFloat {
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self.0
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}
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/// Return a computed `resolution` value from a dppx float value.
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#[inline]
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pub fn from_dppx(dppx: CSSFloat) -> Self {
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Resolution(dppx)
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}
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}
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impl ToComputedValue for specified::Resolution {
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type ComputedValue = Resolution;
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#[inline]
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fn to_computed_value(&self, _: &Context) -> Self::ComputedValue {
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Resolution(self.to_dppx())
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}
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#[inline]
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fn from_computed_value(computed: &Self::ComputedValue) -> Self {
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specified::Resolution::Dppx(computed.dppx())
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}
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}
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impl ToCss for Resolution {
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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: fmt::Write,
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{
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self.dppx().to_css(dest)?;
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dest.write_str("dppx")
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}
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}
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