Enum SoftMaskType 

pub enum SoftMaskType {
    None,
    Alpha,
    Luminosity,
}

Whether the group’s soft-mask channel is alpha-based or luminosity-based.

Variants

None

Not a soft mask — group is composited normally.

Alpha

Soft mask based on the group’s alpha channel.

Luminosity

Soft mask based on the perceived luminance of the group’s RGB pixels.

Only meaningful for RGB (3-byte) groups. For all other pixel modes extract_soft_mask falls back to the alpha plane.

Trait Implementations

impl Clone for SoftMaskType

fn clone(&self) -> SoftMaskType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SoftMaskType

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

Formats the value using the given formatter.

impl PartialEq for SoftMaskType

fn eq(&self, other: &SoftMaskType) -> 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 SoftMaskType

impl Eq for SoftMaskType

impl StructuralPartialEq for SoftMaskType