mirror of
https://github.com/servo/servo.git
synced 2025-07-28 09:40:33 +01:00
82 lines
2.2 KiB
Rust
82 lines
2.2 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
|
|
|
|
use cssparser::RGBA;
|
|
use style::values::animated::{Animate, Procedure, ToAnimatedValue};
|
|
|
|
fn interpolate_rgba(from: RGBA, to: RGBA, progress: f64) -> RGBA {
|
|
let from = from.to_animated_value();
|
|
let to = to.to_animated_value();
|
|
RGBA::from_animated_value(
|
|
from.animate(&to, Procedure::Interpolate { progress })
|
|
.unwrap(),
|
|
)
|
|
}
|
|
|
|
// Color
|
|
#[test]
|
|
fn test_rgba_color_interepolation_preserves_transparent() {
|
|
assert_eq!(
|
|
interpolate_rgba(RGBA::transparent(), RGBA::transparent(), 0.5),
|
|
RGBA::transparent()
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_rgba_color_interepolation_alpha() {
|
|
assert_eq!(
|
|
interpolate_rgba(RGBA::new(200, 0, 0, 100), RGBA::new(0, 200, 0, 200), 0.5),
|
|
RGBA::new(67, 133, 0, 150)
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_rgba_color_interepolation_out_of_range_1() {
|
|
// Some cubic-bezier functions produce values that are out of range [0, 1].
|
|
// Unclamped cases.
|
|
assert_eq!(
|
|
interpolate_rgba(
|
|
RGBA::from_floats(0.3, 0.0, 0.0, 0.4),
|
|
RGBA::from_floats(0.0, 1.0, 0.0, 0.6),
|
|
-0.5
|
|
),
|
|
RGBA::new(154, 0, 0, 77)
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_rgba_color_interepolation_out_of_range_2() {
|
|
assert_eq!(
|
|
interpolate_rgba(
|
|
RGBA::from_floats(1.0, 0.0, 0.0, 0.6),
|
|
RGBA::from_floats(0.0, 0.3, 0.0, 0.4),
|
|
1.5
|
|
),
|
|
RGBA::new(0, 154, 0, 77)
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_rgba_color_interepolation_out_of_range_clamped_1() {
|
|
assert_eq!(
|
|
interpolate_rgba(
|
|
RGBA::from_floats(1.0, 0.0, 0.0, 0.8),
|
|
RGBA::from_floats(0.0, 1.0, 0.0, 0.2),
|
|
-0.5
|
|
),
|
|
RGBA::from_floats(1.0, 0.0, 0.0, 1.0)
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_rgba_color_interepolation_out_of_range_clamped_2() {
|
|
assert_eq!(
|
|
interpolate_rgba(
|
|
RGBA::from_floats(1.0, 0.0, 0.0, 0.8),
|
|
RGBA::from_floats(0.0, 1.0, 0.0, 0.2),
|
|
1.5
|
|
),
|
|
RGBA::from_floats(0.0, 0.0, 0.0, 0.0)
|
|
);
|
|
}
|