Struct canvas::Layout

pub struct Layout<P> { /* fields omitted */ }

Describes the memory region used for the image.

The underlying buffer may have more data allocated than this region and cause the overhead to be reused when resizing the image. All ways to construct this already check that all pixels within the resulting image can be addressed via an index.

Methods

impl<P> Layout<P>

pub fn width_and_height_for_pixel(
    pixel: Pixel<P>,
    width: usize,
    height: usize
) -> Option<Self>

pub fn width_and_height(width: usize, height: usize) -> Option<Self> where
    P: AsPixel, 

pub fn byte_len(self) -> usize

Get the required bytes for this layout.

pub fn len(self) -> usize

The number of pixels in this layout

pub fn width(self) -> usize

pub fn height(self) -> usize

pub fn pixel(self) -> Pixel<P>

pub fn transmute<Q: AsPixel>(self) -> Layout<Q>

Reinterpret to another, same size pixel type.

See transmute_to for details.

pub fn transmute_to<Q>(self, pixel: Pixel<Q>) -> Layout<Q>

Reinterpret to another, same size pixel type.

Panics

Like std::mem::transmute, the size of the two types need to be equal. This ensures that all indices are valid in both directions.

Trait Implementations

impl<P> Copy for Layout<P>

impl<P: AsPixel> Default for Layout<P>

fn default() -> Self

Returns the "default value" for a type.

impl<P> Clone for Layout<P>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.