Enum ColorForm 

pub enum ColorForm {
    Premultiplied,
    Straight,
}

What space a color filter’s matrix expects its input in.

A dart:ui color matrix is defined on straight color, which is the form a person writes a saturation or a sepia matrix in. A blend against a constant color is defined on premultiplied color, which is the form the compositing rules are stated in. Both are affine, both are one matrix here, and this is which one – because the shader works in premultiplied color and has to know whether to undo that before applying the matrix.

Variants

Premultiplied

Premultiplied, which is what the shader already has.

Straight

Straight, which the shader divides out first and restores after.

Trait Implementations

impl Clone for ColorForm

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ColorForm

impl Debug for ColorForm

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

Formats the value using the given formatter.

impl Default for ColorForm

fn default() -> Self

Returns the “default value” for a type.

impl Eq for ColorForm

impl PartialEq for ColorForm

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ColorForm