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feat(color): add Color::from_u32 constructor (#785)

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Convert a u32 in the format 0x00RRGGBB to a Color.

```rust
let white = Color::from_u32(0x00FFFFFF);
let black = Color::from_u32(0x00000000);
```
This commit is contained in:
Josh McKinney 2024-01-11 04:23:16 -08:00 • committed by GitHub
parent 34648941d4
commit ffd5fc79fc
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1 changed files with 21 additions and 0 deletions
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21
src/style/color.rs
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@ -127,6 +127,18 @@ pub enum Color {
Indexed(u8),
}
impl Color {
/// Convert a u32 to a Color
///
/// The u32 should be in the format 0x00RRGGBB.
pub const fn from_u32(u: u32) -> Color {
let r = (u >> 16) as u8;
let g = (u >> 8) as u8;
let b = u as u8;
Color::Rgb(r, g, b)
}
}
#[cfg(feature = "serde")]
impl<'de> serde::Deserialize<'de> for Color {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
@ -270,6 +282,15 @@ mod tests {
use super::*;
#[test]
fn from_u32() {
assert_eq!(Color::from_u32(0x000000), Color::Rgb(0, 0, 0));
assert_eq!(Color::from_u32(0xFF0000), Color::Rgb(255, 0, 0));
assert_eq!(Color::from_u32(0x00FF00), Color::Rgb(0, 255, 0));
assert_eq!(Color::from_u32(0x0000FF), Color::Rgb(0, 0, 255));
assert_eq!(Color::from_u32(0xFFFFFF), Color::Rgb(255, 255, 255));
}
#[test]
fn from_rgb_color() {
let color: Color = Color::from_str("#FF0000").unwrap();