Struct Mask 

pub struct Mask { /* private fields */ }

A clipping mask: width × height coverage values 0..=255.

Implementations

impl Mask

pub fn new(width: u32, height: u32) -> Option<Mask>

Creates an empty (fully transparent — everything is clipped) mask. None for zero dimensions or overflow.

pub fn from_path( width: u32, height: u32, path: &Path, fill_rule: FillRule, anti_alias: bool, transform: Transform, ) -> Option<Mask>

Creates a mask from a contour: inside the path — one, outside — zero.

pub fn width(&self) -> u32

pub fn height(&self) -> u32

pub fn data(&self) -> &[u8]

Raw coverage values (0..=255), one per pixel.

pub fn fill_path( &mut self, path: &Path, fill_rule: FillRule, anti_alias: bool, transform: Transform, )

Adds a contour to the mask (union: the maximum coverage is taken).

pub fn intersect_path( &mut self, path: &Path, fill_rule: FillRule, anti_alias: bool, transform: Transform, )

Intersects the mask with a contour (coverage is multiplied). Useful for nested clipping regions.

Trait Implementations

impl Clone for Mask

fn clone(&self) -> Mask

Returns a duplicate of the value.

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

Performs copy-assignment from source.