Struct ThemeData 

pub struct ThemeData {
    pub colors: ColorScheme,
    pub animation: AnimationConfig,
    pub typography: Typography,
    pub spacing: Spacing,
    pub radius: BorderRadius,
    pub is_dark: bool,
    pub app_bar: AppBarStyle,
    pub ext: HashMap<TypeId, Arc<dyn Any + Send + Sync>>,
}

All design tokens bundled together as a single snapshot.

ThemeData is Clone so it can be cheaply shared via the global atom.

Fields

colors: ColorScheme

animation: AnimationConfig

Global animation policy — see AnimationConfig.

typography: Typography

spacing: Spacing

radius: BorderRadius

is_dark: bool

true for dark themes; false for light themes.

app_bar: AppBarStyle

Platform-adaptive AppBar defaults (D105). The first of what will become several per-widget Style fields — see Phase 23.

ext: HashMap<TypeId, Arc<dyn Any + Send + Sync>>

Type-keyed extension map (D105 Phase 23 Step 4): lets a custom widget stash and read its own theme-style struct without editing this type. Populate via ThemeData::with_ext, read via ThemeData::ext.

Implementations

impl ThemeData

pub fn animations(self, enabled: bool) -> Self

Enable or disable global animation (theme-level).

pub fn animation_ms(self, ms: f32) -> Self

Set the global animation duration in milliseconds.

pub fn with_ext<T: Any + Send + Sync + 'static>(self, ext: T) -> Self

Stash a custom per-widget style struct in the theme, keyed by its own type (D105 Phase 23 Step 4). Lets a new/custom widget theme itself without any change to ThemeData’s fields.

pub fn ext<T: Any + Send + Sync + 'static>(&self) -> Option<&T>

Read a previously-stashed extension struct by type, if the theme set one. Falls back to None so callers typically pair this with .unwrap_or_default() or a widget-local default.

Trait Implementations

impl Clone for ThemeData

fn clone(&self) -> ThemeData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ThemeData

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

Formats the value using the given formatter.