Struct Rgba 

pub struct Rgba {
    pub r: u8,
    pub g: u8,
    pub b: u8,
    pub a: u8,
}

An sRGB color with alpha, stored as four u8 components.

All values are in the sRGB color space. When parsing hex strings, alpha defaults to 255 (fully opaque) if omitted.

Hex Format

Supports parsing from and displaying as hex strings:

• #RGB / RGB – 3-digit shorthand (each digit doubled: #abc -> #aabbcc)
• #RGBA / RGBA – 4-digit shorthand with alpha
• #RRGGBB / RRGGBB – standard 6-digit hex
• #RRGGBBAA / RRGGBBAA – 8-digit hex with alpha

Display outputs lowercase hex: #rrggbb when alpha is 255, #rrggbbaa otherwise.

Examples

use native_theme::Rgba;

// Create an opaque color
let blue = Rgba::rgb(0, 120, 215);
assert_eq!(blue.a, 255);

// Parse from a hex string
let parsed: Rgba = "#3daee9".parse().unwrap();
assert_eq!(parsed.r, 61);

// Convert to f32 array for toolkit interop
let arr = Rgba::rgb(255, 0, 0).to_f32_array();
assert_eq!(arr, [1.0, 0.0, 0.0, 1.0]);

Default

Rgba::default() is transparent black (0, 0, 0, 0), not opaque black. Use Rgba::rgb(0, 0, 0) for opaque black.

Fields

r: u8

Red component (0-255).

g: u8

Green component (0-255).

b: u8

Blue component (0-255).

a: u8

Alpha component (0-255, where 255 is fully opaque).

Implementations

impl Rgba

pub const fn rgb(r: u8, g: u8, b: u8) -> Rgba

Create an opaque color (alpha = 255).

pub const fn rgba(r: u8, g: u8, b: u8, a: u8) -> Rgba

Create a color with explicit alpha.

pub fn from_f32(r: f32, g: f32, b: f32, a: f32) -> Rgba

Create a color from floating-point components in the 0.0..=1.0 range.

Values are clamped to 0.0..=1.0 before conversion.

Note: round-trip through from_f32 -> to_f32_array is lossy due to u8 quantization (e.g., from_f32(0.5, ...) -> r=128 -> to_f32_array() -> 0.50196…).

pub fn to_f32_array(&self) -> [f32; 4]

Convert to [r, g, b, a] in the 0.0..=1.0 range (for toolkit interop).

Note: round-trip through from_f32 -> to_f32_array is lossy due to u8 quantization (256 discrete steps per channel).

pub fn to_f32_tuple(&self) -> (f32, f32, f32, f32)

Convert to (r, g, b, a) tuple in the 0.0..=1.0 range.

Trait Implementations

impl Clone for Rgba

fn clone(&self) -> Rgba

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Rgba

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Rgba

fn default() -> Rgba

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Rgba

fn deserialize<D>( deserializer: D, ) -> Result<Rgba, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Rgba

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl FromStr for Rgba

type Err = ParseColorError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Rgba, <Rgba as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for Rgba

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Rgba

fn eq(&self, other: &Rgba) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Rgba

fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Rgba

impl Eq for Rgba

impl StructuralPartialEq for Rgba