Struct WidgetSignal 

pub struct WidgetSignal {
    pub widget_id: u64,
    pub essential: bool,
    pub priority: f32,
    pub staleness_ms: u64,
    pub focus_boost: f32,
    pub interaction_boost: f32,
    pub area_cells: u32,
    pub cost_estimate_us: f32,
    pub recent_cost_us: f32,
    pub estimate_source: CostEstimateSource,
}

Per-widget scheduling signals captured during rendering.

These signals are used by runtime policies (budgeted refresh, greedy selection) to prioritize which widgets to render when budget is tight.

Fields

widget_id: u64

Stable widget identifier.

essential: bool

Whether this widget is essential.

priority: f32

Base priority in [0, 1].

staleness_ms: u64

Milliseconds since last render.

focus_boost: f32

Focus boost in [0, 1].

interaction_boost: f32

Interaction boost in [0, 1].

area_cells: u32

Widget area in cells (width * height).

cost_estimate_us: f32

Estimated render cost in microseconds.

recent_cost_us: f32

Recent measured cost (EMA), if available.

estimate_source: CostEstimateSource

Cost estimate provenance.

Implementations

impl WidgetSignal

pub fn new(widget_id: u64) -> Self

Create a widget signal with neutral defaults.

Trait Implementations

impl Clone for WidgetSignal

fn clone(&self) -> WidgetSignal

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WidgetSignal

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

Formats the value using the given formatter.

impl Default for WidgetSignal

fn default() -> Self

Returns the “default value” for a type.