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cd8f96cc9e
This more concrete wrapper type can write a prefix the very first time something is written to it. This allows removing plenty of useless monomorphisations caused by the former W/SequenceWriter<W> pair of types.
51 lines
1.5 KiB
Rust
51 lines
1.5 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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//! CSS handling for the computed value of
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//! [`position`][position] values.
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//!
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//! [position]: https://drafts.csswg.org/css-backgrounds-3/#position
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use std::fmt::{self, Write};
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use style_traits::{CssWriter, ToCss};
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use values::computed::{LengthOrPercentage, Percentage};
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use values::generics::position::Position as GenericPosition;
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pub use values::specified::position::{GridAutoFlow, GridTemplateAreas};
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/// The computed value of a CSS `<position>`
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pub type Position = GenericPosition<HorizontalPosition, VerticalPosition>;
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/// The computed value of a CSS horizontal position.
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pub type HorizontalPosition = LengthOrPercentage;
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/// The computed value of a CSS vertical position.
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pub type VerticalPosition = LengthOrPercentage;
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impl Position {
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/// `50% 50%`
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#[inline]
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pub fn center() -> Self {
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Self::new(
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LengthOrPercentage::Percentage(Percentage(0.5)),
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LengthOrPercentage::Percentage(Percentage(0.5)),
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)
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}
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/// `0% 0%`
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#[inline]
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pub fn zero() -> Self {
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Self::new(LengthOrPercentage::zero(), LengthOrPercentage::zero())
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}
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}
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impl ToCss for Position {
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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.horizontal.to_css(dest)?;
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dest.write_str(" ")?;
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self.vertical.to_css(dest)
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}
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}
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