Struct ChartPalette 

pub struct ChartPalette { /* private fields */ }

Implementations

impl ChartPalette

pub fn new( primary: AlphaColor<Srgb>, additional: impl IntoIterator<Item = AlphaColor<Srgb>>, ) -> ChartPalette

Build a non-empty custom palette. Requiring the primary colour makes an empty palette unrepresentable and keeps indexed lookup total.

pub fn from_theme(theme: &Theme) -> ChartPalette

A palette derived from live design tokens, including semantic colours selected by light, dark, and high-contrast themes.

pub fn with_sequential( self, low: AlphaColor<Srgb>, high: AlphaColor<Srgb>, ) -> ChartPalette

pub fn with_diverging( self, negative: AlphaColor<Srgb>, midpoint: AlphaColor<Srgb>, positive: AlphaColor<Srgb>, ) -> ChartPalette

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn categorical(&self, index: usize) -> AlphaColor<Srgb>

Stable wraparound lookup, suitable for an arbitrary number of series.

pub fn sequential(&self, value: f64) -> AlphaColor<Srgb>

Sample the sequential ramp. Values outside 0..=1 are clamped.

pub fn diverging(&self, value: f64) -> AlphaColor<Srgb>

Sample a diverging ramp where -1 is negative, 0 is the midpoint, and +1 is positive. Values outside that range are clamped.

Trait Implementations

impl Clone for ChartPalette

fn clone(&self) -> ChartPalette

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChartPalette

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

Formats the value using the given formatter.