Struct TransferState 

pub struct TransferState {
    pub gray: Option<TransferTable>,
    pub color: Option<[Option<TransferTable>; 4]>,
}

Transfer function state captured at paint time.

Fields

gray: Option<TransferTable>

Single-component transfer (from settransfer). None = identity.

color: Option<[Option<TransferTable>; 4]>

Per-component color transfer [R, G, B, Gray] (from setcolortransfer). When set, overrides gray.

Implementations

impl TransferState

pub fn has_functions(&self) -> bool

Returns true if any non-identity transfer function is set.

Trait Implementations

impl Clone for TransferState

fn clone(&self) -> TransferState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TransferState

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

Formats the value using the given formatter.

impl Default for TransferState

fn default() -> TransferState

Returns the “default value” for a type.