Struct RgbaColor 

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

An RGBA color value with 8 bits per component.

Fields

r: u8

Red component.

g: u8

Green component.

b: u8

Blue component.

a: u8

Alpha component (255 = fully opaque).

Implementations

impl RgbaColor

pub const WHITE: Self

Opaque white.

pub const BLACK: Self

Opaque black.

pub const TRANSPARENT: Self

Fully transparent.

pub fn new(r: u8, g: u8, b: u8, a: u8) -> Self

Create a new RGBA color.

pub fn from_pdf_color(color: &Color, alpha: f32) -> Self

Convert a PDF color to RGBA.

The alpha parameter is in the range [0.0, 1.0]. Color components are interpreted based on the number of components:

• 1 component: DeviceGray
• 3 components: DeviceRGB
• 4 components: DeviceCMYK (simple subtractive conversion)

pub fn from_resolved_color( color: &Color, cs: &ResolvedColorSpace, alpha: f32, ) -> Self

Convert a color using a resolved color space to RGBA.

This handles advanced color spaces (CalGray, CalRGB, Lab, ICCBased, Indexed, Separation, DeviceN) by converting through intermediate device-independent steps to sRGB.

Trait Implementations

impl Clone for RgbaColor

fn clone(&self) -> RgbaColor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RgbaColor

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

Formats the value using the given formatter.

impl Default for RgbaColor

fn default() -> RgbaColor

Returns the “default value” for a type.

impl Hash for RgbaColor

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

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 RgbaColor

fn eq(&self, other: &RgbaColor) -> 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 Copy for RgbaColor

impl Eq for RgbaColor

impl StructuralPartialEq for RgbaColor