Function cosmic::cosmic_theme::palette::serde::deserialize_with_optional_pre_alpha
source ยท pub fn deserialize_with_optional_pre_alpha<'de, T, D>(
deserializer: D,
) -> Result<PreAlpha<T>, <D as Deserializer<'de>>::Error>where
T: Premultiply + Deserialize<'de>,
<T as Premultiply>::Scalar: Stimulus + Deserialize<'de>,
D: Deserializer<'de>,
Expand description
Deserialize a premultiplied transparent color without requiring the alpha to be specified.
A color with missing alpha will be interpreted as fully opaque.
use serde::Deserialize;
use palette::{LinSrgba, LinSrgb, blend::PreAlpha};
type PreRgba = PreAlpha<LinSrgb<f32>>;
#[derive(Deserialize, PartialEq, Debug)]
struct MyColors {
#[serde(deserialize_with = "palette::serde::deserialize_with_optional_pre_alpha")]
opaque: PreRgba,
#[serde(deserialize_with = "palette::serde::deserialize_with_optional_pre_alpha")]
transparent: PreRgba,
}
let my_colors = MyColors {
opaque: LinSrgba::new(0.6, 0.8, 0.3, 1.0).into(),
transparent: LinSrgba::new(0.6, 0.8, 0.3, 0.5).into(),
};
let json = r#"{
"opaque":{"red":0.6,"green":0.8,"blue":0.3},
"transparent":{"red":0.3,"green":0.4,"blue":0.15,"alpha":0.5}
}"#;
assert_eq!(
serde_json::from_str::<MyColors>(json).unwrap(),
my_colors
);