fret_ui_kit/
corners4.rs

1use fret_core::Px;
2
3use crate::{MetricRef, Radius};
4
5/// A 4-corner value (top-left/top-right/bottom-right/bottom-left) used for fluent authoring ergonomics.
6///
7/// This intentionally lives in the ecosystem layer (`fret-ui-kit`) and is token-aware via
8/// `Radius`/`MetricRef` conversions (unlike `fret_core::Corners`, which is Px-only).
9#[derive(Debug, Clone, PartialEq)]
10pub struct Corners4<T> {
11    pub top_left: T,
12    pub top_right: T,
13    pub bottom_right: T,
14    pub bottom_left: T,
15}
16
17impl<T> Corners4<T> {
18    pub fn tltrbrbl(top_left: T, top_right: T, bottom_right: T, bottom_left: T) -> Self {
19        Self {
20            top_left,
21            top_right,
22            bottom_right,
23            bottom_left,
24        }
25    }
26
27    pub fn map<U>(self, mut f: impl FnMut(T) -> U) -> Corners4<U> {
28        Corners4 {
29            top_left: f(self.top_left),
30            top_right: f(self.top_right),
31            bottom_right: f(self.bottom_right),
32            bottom_left: f(self.bottom_left),
33        }
34    }
35}
36
37impl<T: Clone> Corners4<T> {
38    pub fn all(value: T) -> Self {
39        Self {
40            top_left: value.clone(),
41            top_right: value.clone(),
42            bottom_right: value.clone(),
43            bottom_left: value,
44        }
45    }
46}
47
48impl From<Corners4<Radius>> for Corners4<MetricRef> {
49    fn from(value: Corners4<Radius>) -> Self {
50        value.map(MetricRef::radius)
51    }
52}
53
54impl From<Corners4<Px>> for Corners4<MetricRef> {
55    fn from(value: Corners4<Px>) -> Self {
56        value.map(MetricRef::Px)
57    }
58}
fret_ui_kit/corners4.rs

fret_ui_kit/
corners4.rs
