Struct PaletteBuilder 

pub struct PaletteBuilder { /* private fields */ }

Fluent builder for a Palette with WCAG contrast validation.

All fields are optional; build falls back to safe defaults for any field not provided so that partial palettes compile.

Implementations

impl PaletteBuilder

pub fn new() -> Self

Create a new builder with all fields unset.

pub fn background(self, c: Color) -> Self

Set the background colour.

pub fn surface(self, c: Color) -> Self

Set the surface colour (cards, dialogs).

pub fn text_primary(self, c: Color) -> Self

Set the primary text colour.

pub fn text_secondary(self, c: Color) -> Self

Set the secondary / muted text colour.

pub fn primary(self, c: Color) -> Self

Set the primary brand / accent colour.

pub fn on_primary(self, c: Color) -> Self

Set the “on-primary” text colour (drawn on top of primary).

pub fn validate(&self) -> ValidationResult

Validate all foreground/background pairs and return a ValidationResult.

pub fn build(self) -> Result<CooljapanTheme, Vec<ContrastWarning>>

Assemble a CooljapanTheme from the builder’s colours.

Returns Err if any foreground/background pair fails WCAG AA (< 4.5:1).

Trait Implementations

impl Clone for PaletteBuilder

fn clone(&self) -> PaletteBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PaletteBuilder

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

Formats the value using the given formatter.

impl Default for PaletteBuilder

fn default() -> PaletteBuilder

Returns the “default value” for a type.