Struct Bitmap 

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

A one-bit picture file, read without copying (Bitmap::parse).

Implementations

impl<'a> Bitmap<'a>

pub fn is_bitmap(bytes: &[u8]) -> bool

Whether bytes starts as a one-bit picture file does.

pub fn parse(bytes: &'a [u8]) -> Result<Self, &'static str>

Reads the file bytes, or says in plain words what is wrong with it.

pub const fn stride(width: u16) -> usize

Bytes per row of a picture width pixels wide.

pub const fn plane_bytes(width: u16, height: u16) -> usize

Bytes of one style (or of the mask) of a width × height picture.

pub const fn width(&self) -> u16

Width in pixels.

pub const fn height(&self) -> u16

Height in pixels.

pub const fn source_size(&self) -> (u16, u16)

The size of the PNG it was made from, in that PNG’s pixels.

pub const fn styles(&self) -> usize

How many styles it holds.

pub fn style(&self, n: usize) -> Option<&'a [u8]>

The rows of style n (0 is the first), or None past the last.

pub const fn mask(&self) -> Option<&'a [u8]>

The mask’s rows, if it has one.

pub fn pixel(&self, n: usize, x: u16, y: u16) -> Option<bool>

Pixel (x, y) of style n: Some(true) white, Some(false) black, None see-through, off the picture or past the last style.

Trait Implementations

impl<'a> Clone for Bitmap<'a>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Bitmap<'a>

impl<'a> Debug for Bitmap<'a>

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

Formats the value using the given formatter.

impl<'a> Eq for Bitmap<'a>

impl<'a> PartialEq for Bitmap<'a>

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

Equality operator ==.

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

Inequality operator !=.

impl<'a> StructuralPartialEq for Bitmap<'a>