Enum FractionalMask 

pub enum FractionalMask {
    Linear {
        from: (f32, f32),
        to: (f32, f32),
        from_color: Color,
        to_color: Color,
    },
    Radial {
        center: (f32, f32),
        radius: f32,
        from_color: Color,
        to_color: Color,
    },
}

A MaskShader written in fractions of the box it covers — (0, 0) the top-left corner, (1, 1) the bottom-right.

This is what a caller writes, because a caller knows the shape of the effect it wants and not the pixels the box will land on. LayerFilter::resolve_mask turns it into the absolute geometry a scene holds, once the box is known.

Variants

Linear

A straight fade from from to to.

Fields

from: (f32, f32)

Where from_color holds, in fractions of the box.

to: (f32, f32)

Where to_color holds, in fractions of the box.

from_color: Color

The colour at from.

to_color: Color

The colour at to.

Radial

A fade outwards from center, reaching to_color at radius — a fraction of the box smaller side.

Fields

center: (f32, f32)

The centre, in fractions of the box.

radius: f32

Where to_color holds, as a fraction of the box smaller side.

from_color: Color

The colour at the centre.

to_color: Color

The colour at radius and beyond.

Implementations

impl FractionalMask

pub fn fade_out_bottom() -> FractionalMask

A top-to-bottom fade from opaque to transparent: the common “the list fades out at the bottom” mask, written once.

Trait Implementations

impl Clone for FractionalMask

fn clone(&self) -> FractionalMask

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FractionalMask

impl Debug for FractionalMask

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

Formats the value using the given formatter.

impl PartialEq for FractionalMask

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for FractionalMask