Struct Shadow 

pub struct Shadow {
    pub offset_y: f32,
    pub blur: f32,
    pub color: AlphaColor<Srgb>,
}

One step of the elevation ramp — a complete description of a drop shadow, and the only description a surface is allowed to use.

• offset_y — how far the shadow sits below the surface, held at a quarter of blur all the way up the ramp; larger and the shadow reads as a dark bar under one edge rather than depth.
• blur — a CSS-style blur radius; crate::surface::shadow halves it for the Gaussian’s standard deviation, so falloff dies out about 1.25 * blur past the surface’s outline.
• color — hue and strength. Alpha is honoured, not decorative: dropping it is how the quick-settings panel once rendered a 43%-black token as a 100%-black smear.

Fields

offset_y: f32

blur: f32

color: AlphaColor<Srgb>

Implementations

impl Shadow

pub fn with_alpha_scaled(self, factor: f32) -> Shadow

The same shadow with its alpha scaled by factor — the one way an animating surface fades its elevation with itself.

Trait Implementations

impl Clone for Shadow

fn clone(&self) -> Shadow

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Shadow

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

Formats the value using the given formatter.

impl PartialEq for Shadow

fn eq(&self, other: &Shadow) -> 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 Copy for Shadow

impl StructuralPartialEq for Shadow