Struct Opacity 

pub struct Opacity(/* private fields */);

Surface-global fade coverage in [0, 1] — how present the whole frosted surface is, distinct from Tint’s alpha (which is the film mix, blur vs tint color) and from BlurStrength (the radius). It scales the composite’s final blend weight: 1.0 is the surface fully composited (the default — every existing caller and golden is unchanged), 0.0 leaves the destination untouched (the surface absent), and a fractional value blends the frosted result over the destination by that factor. A consumer animating a surface in/out (a modal scrim fading with its dialog) drives this per frame.

Two-sided clamp [0, 1] (unlike BlurStrength/CornerRadius, which clamp only the lower bound) — the precedent is LinearRgba’s alpha. Non-finite input falls back to 1.0 (fully present, behavior-preserving), not 0.0: a NaN propagates through f32::clamp, and a silently-invisible surface is a worse failure than a silently-opaque one.

Implementations

impl Opacity

pub const FULL: Opacity

A fully-present surface — the default.

pub fn new(factor: f32) -> Opacity

Construct from a [0, 1] factor. Out-of-range clamps; non-finite (NaN/±∞) falls back to 1.0 (fully present).

pub fn value(self) -> f32

The fade factor in [0, 1].

Trait Implementations

impl Clone for Opacity

fn clone(&self) -> Opacity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Opacity

impl Debug for Opacity

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

Formats the value using the given formatter.

impl Default for Opacity

fn default() -> Opacity

Returns the “default value” for a type.

impl PartialEq for Opacity

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Opacity