Struct Color 

pub struct Color {
    pub r: f32,
    pub g: f32,
    pub b: f32,
    pub a: f32,
}

An sRGB colour with straight (non-premultiplied) alpha.

Each component lies in the range 0 to 1. In JSON a colour is the string #rrggbb when it is opaque, or #rrggbbaa otherwise, so the stored precision is eight bits per component.

Fields

r: f32

The red component, from 0 to 1.

g: f32

The green component, from 0 to 1.

b: f32

The blue component, from 0 to 1.

a: f32

The opacity, from 0 (transparent) to 1 (opaque).

Implementations

impl Color

pub const BLACK: Color

Opaque black.

pub const WHITE: Color

Opaque white.

pub const fn rgb(r: f32, g: f32, b: f32) -> Color

Creates an opaque colour from red, green and blue components between 0 and 1.

pub const fn rgba(r: f32, g: f32, b: f32, a: f32) -> Color

Creates a colour from red, green, blue and alpha components between 0 and 1.

pub fn from_hex(hex: &str) -> Result<Color, IrError>

Parses a colour from #rrggbb or #rrggbbaa, accepting upper- or lower-case hexadecimal digits.

Each two-digit byte n becomes the component n as f32 / 255.0, so that a parsed colour compares equal to the same colour constructed from n / 255.

Errors

Returns IrError::InvalidColor when the string has any other form.

pub fn to_hex(&self) -> String

Formats the colour as lower-case #rrggbb when it is opaque, or as #rrggbbaa otherwise, rounding each component to the nearest of 256 levels.

Trait Implementations

impl Clone for Color

fn clone(&self) -> Color

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Color

impl Debug for Color

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

Formats the value using the given formatter.

impl Default for Color

fn default() -> Color

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Color

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

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl IntoColorSpec for Color

fn into_color_spec(self) -> ColorSpec

Converts the value into a colour specification.

impl JsonSchema for Color

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn json_schema(_generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

impl PartialEq for Color

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Color

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 StructuralPartialEq for Color