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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
55 lines
1.4 KiB
Rust
55 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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//! Computed types for CSS values that are related to motion path.
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use crate::values::computed::Angle;
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use crate::values::generics::motion::GenericOffsetPath;
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use crate::Zero;
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/// The computed value of `offset-path`.
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pub type OffsetPath = GenericOffsetPath<Angle>;
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#[inline]
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fn is_auto_zero_angle(auto: &bool, angle: &Angle) -> bool {
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*auto && angle.is_zero()
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}
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/// A computed offset-rotate.
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#[derive(
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Animate,
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Clone,
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ComputeSquaredDistance,
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Copy,
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Debug,
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MallocSizeOf,
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PartialEq,
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ToAnimatedZero,
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ToCss,
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ToResolvedValue,
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)]
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#[repr(C)]
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pub struct OffsetRotate {
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/// If auto is false, this is a fixed angle which indicates a
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/// constant clockwise rotation transformation applied to it by this
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/// specified rotation angle. Otherwise, the angle will be added to
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/// the angle of the direction in layout.
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#[animation(constant)]
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#[css(represents_keyword)]
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pub auto: bool,
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/// The angle value.
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#[css(contextual_skip_if = "is_auto_zero_angle")]
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pub angle: Angle,
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}
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impl OffsetRotate {
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/// Returns "auto 0deg".
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#[inline]
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pub fn auto() -> Self {
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OffsetRotate {
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auto: true,
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angle: Zero::zero(),
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}
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}
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}
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