Struct MaskView 

pub struct MaskView<'a> { /* private fields */ }

Borrowed, dimension-checked validity mask; zero is invalid and nonzero is valid.

Implementations

impl<'a> MaskView<'a>

pub fn new(width: u32, height: u32, data: &'a [u8]) -> Result<Self>

Creates a validity-mask view.

Errors

Returns an error when dimensions overflow or the mask length differs from width * height.

pub fn width(self) -> u32

Returns the mask width in pixels.

pub fn height(self) -> u32

Returns the mask height in pixels.

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

Returns the underlying byte mask.

pub fn pixel_count(self) -> Result<usize>

Returns the checked number of mask pixels.

pub fn valid_count(self) -> usize

Counts nonzero, valid mask entries.

Trait Implementations

impl<'a> Clone for MaskView<'a>

fn clone(&self) -> MaskView<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for MaskView<'a>

impl<'a> Debug for MaskView<'a>

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

Formats the value using the given formatter.

impl<'a> Eq for MaskView<'a>

impl<'a> PartialEq for MaskView<'a>

fn eq(&self, other: &MaskView<'a>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<'a> StructuralPartialEq for MaskView<'a>