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5e77ba9bf4
1. Add `generics::motion::OffsetPath`, and use specified `Angle` and
computed `Angle` to define specified `OffsetPath` and computed `OffsetPath`.
2. Add `ray` function into `OffsetPath`.
We also tweak the degree from 150deg to 135deg in wpt (e.g.
offset-path-ray-001.html and others) to avoid floating point precision issues.
For example:
```
// offset-path: ray(150deg ...);
// offset-distance: 20px;
matrix:
{
{0.500000 0.866025 0.000000 0.000000},
{-0.866025 0.500000 0.000000 0.000000},
{0.000000 0.000000 1.000000 0.000000},
{10.000000 17.320509 0.000000 1.000000}
}
// rotate(60deg) translate(20px)
matrix:
{
{0.500000 0.866025 0.000000 0.000000},
{-0.866025 0.500000 0.000000 0.000000},
{0.000000 0.000000 1.000000 0.000000},
{10.000000 17.320507 0.000000 1.000000}
}
```
Their translate parts, 17.320509 vs 17.320507, are almost the same (only
tiny difference), which may cause the reftest failed.
Differential Revision: https://phabricator.services.mozilla.com/D42721
110 lines
2.6 KiB
Rust
110 lines
2.6 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 Motion Path.
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use crate::values::specified::SVGPathData;
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/// The <size> in ray() function.
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///
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/// https://drafts.fxtf.org/motion-1/#valdef-offsetpath-size
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#[allow(missing_docs)]
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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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Parse,
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PartialEq,
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SpecifiedValueInfo,
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ToAnimatedZero,
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ToComputedValue,
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ToCss,
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ToResolvedValue,
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ToShmem,
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)]
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#[repr(u8)]
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pub enum RaySize {
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ClosestSide,
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ClosestCorner,
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FarthestSide,
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FarthestCorner,
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Sides,
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}
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/// The `ray()` function, `ray( [ <angle> && <size> && contain? ] )`
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///
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/// https://drafts.fxtf.org/motion-1/#valdef-offsetpath-ray
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#[derive(
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Animate,
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Clone,
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ComputeSquaredDistance,
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Debug,
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MallocSizeOf,
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PartialEq,
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SpecifiedValueInfo,
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ToAnimatedZero,
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ToComputedValue,
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ToCss,
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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 RayFunction<Angle> {
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/// The bearing angle with `0deg` pointing up and positive angles
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/// representing clockwise rotation.
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pub angle: Angle,
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/// Decide the path length used when `offset-distance` is expressed
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/// as a percentage.
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#[animation(constant)]
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pub size: RaySize,
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/// Clamp `offset-distance` so that the box is entirely contained
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/// within the path.
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#[animation(constant)]
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#[css(represents_keyword)]
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pub contain: bool,
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}
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/// The offset-path value.
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///
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/// https://drafts.fxtf.org/motion-1/#offset-path-property
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#[derive(
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Animate,
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Clone,
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ComputeSquaredDistance,
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Debug,
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MallocSizeOf,
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PartialEq,
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SpecifiedValueInfo,
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ToAnimatedZero,
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ToComputedValue,
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ToCss,
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ToResolvedValue,
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ToShmem,
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)]
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#[repr(C, u8)]
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pub enum GenericOffsetPath<Angle> {
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// We could merge SVGPathData into ShapeSource, so we could reuse them. However,
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// we don't want to support other value for offset-path, so use SVGPathData only for now.
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/// Path value for path(<string>).
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#[css(function)]
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Path(SVGPathData),
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/// ray() function, which defines a path in the polar coordinate system.
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#[css(function)]
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Ray(RayFunction<Angle>),
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/// None value.
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#[animation(error)]
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None,
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// Bug 1186329: Implement <basic-shape>, <geometry-box>, and <url>.
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}
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pub use self::GenericOffsetPath as OffsetPath;
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impl<Angle> OffsetPath<Angle> {
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/// Return None.
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#[inline]
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pub fn none() -> Self {
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OffsetPath::None
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}
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}
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