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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.
81 lines
2.4 KiB
Rust
81 lines
2.4 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 http://mozilla.org/MPL/2.0/. */
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//! Computed values for inherited box
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use std::fmt::{self, Write};
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use style_traits::{CssWriter, ToCss};
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use values::specified::Angle;
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/// An angle rounded and normalized per https://drafts.csswg.org/css-images/#propdef-image-orientation
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#[allow(missing_docs)]
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#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, PartialEq)]
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pub enum Orientation {
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Angle0 = 0,
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Angle90,
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Angle180,
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Angle270,
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}
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impl Orientation {
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/// Get the actual angle that this orientation value represents.
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pub fn angle(&self) -> Angle {
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match *self {
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Orientation::Angle0 => Angle::from_degrees(0.0, false),
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Orientation::Angle90 => Angle::from_degrees(90.0, false),
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Orientation::Angle180 => Angle::from_degrees(180.0, false),
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Orientation::Angle270 => Angle::from_degrees(270.0, false),
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}
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}
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}
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impl ToCss for Orientation {
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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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// Should agree with Angle::to_css.
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match *self {
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Orientation::Angle0 => dest.write_str("0deg"),
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Orientation::Angle90 => dest.write_str("90deg"),
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Orientation::Angle180 => dest.write_str("180deg"),
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Orientation::Angle270 => dest.write_str("270deg"),
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}
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}
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}
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/// https://drafts.csswg.org/css-images/#propdef-image-orientation
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#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq)]
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pub enum ImageOrientation {
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/// 'from-image'
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FromImage,
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/// '<angle>' | '<angle>? flip'
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AngleWithFlipped(Orientation, bool),
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}
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impl ImageOrientation {
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#[allow(missing_docs)]
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pub fn zero() -> Self {
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ImageOrientation::AngleWithFlipped(Orientation::Angle0, false)
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}
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}
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impl ToCss for ImageOrientation {
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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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match *self {
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ImageOrientation::FromImage => dest.write_str("from-image"),
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ImageOrientation::AngleWithFlipped(angle, flipped) => {
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angle.to_css(dest)?;
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if flipped {
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dest.write_str(" flip")?;
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}
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Ok(())
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},
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}
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}
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}
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