Struct `PnmHeader`

pub struct PnmHeader { /* private fields */ }

Stores the complete header data of a file.

Internally, provides mechanisms for lossless reencoding. After reading a file with the decoder it is possible to recover the header and construct an encoder. Using the encoder on the just loaded image should result in a byte copy of the original file (for single image pnms without additional trailing data).

Implementations

`impl PnmHeader`

fn subtype(&self) -> PnmSubtype: Retrieve the format subtype from which the header was created.
fn width(&self) -> u32: The width of the image this header is for.
fn height(&self) -> u32: The height of the image this header is for.
fn maximal_sample(&self) -> u32: The biggest value a sample can have. In other words, the colour resolution.
fn as_bitmap(&self) -> Option<&BitmapHeader>: Retrieve the underlying bitmap header if any
fn as_graymap(&self) -> Option<&GraymapHeader>: Retrieve the underlying graymap header if any
fn as_pixmap(&self) -> Option<&PixmapHeader>: Retrieve the underlying pixmap header if any
fn as_arbitrary(&self) -> Option<&ArbitraryHeader>: Retrieve the underlying arbitrary header if any
fn write(&self, writer: &mut dyn Write) -> Result<()>: Write the header back into a binary stream

Trait Implementations

`impl Clone for PnmHeader`

fn clone(&self) -> PnmHeader

`impl From<ArbitraryHeader> for PnmHeader`

fn from(header: ArbitraryHeader) -> Self

`impl From<BitmapHeader> for PnmHeader`

fn from(header: BitmapHeader) -> Self

`impl From<GraymapHeader> for PnmHeader`

fn from(header: GraymapHeader) -> Self

`impl From<PixmapHeader> for PnmHeader`

fn from(header: PixmapHeader) -> Self

Auto Trait Implementations

`impl Freeze for PnmHeader`

`impl RefUnwindSafe for PnmHeader`

`impl Send for PnmHeader`

`impl Sync for PnmHeader`

`impl Unpin for PnmHeader`

`impl UnsafeUnpin for PnmHeader`

`impl UnwindSafe for PnmHeader`

Blanket Implementations

`impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for PnmHeader where ST: ?Sized, DT: ?Sized,`

`impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for PnmHeader where ST: ?Sized, DT: ?Sized,`

`impl<T> Any for PnmHeader where T: 'static + ?Sized,`

fn type_id(&self) -> TypeId

`impl<T> Borrow<T> for PnmHeader where T: ?Sized,`

fn borrow(&self) -> &T

`impl<T> BorrowMut<T> for PnmHeader where T: ?Sized,`

fn borrow_mut(&mut self) -> &mut T

`impl<T> CloneToUninit for PnmHeader where T: Clone,`

unsafe fn clone_to_uninit(&self, dest: *mut u8)

`impl<T> From<T> for PnmHeader`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> IntoEither for PnmHeader`

`impl<T> Pointable for PnmHeader`

const ALIGN: usize = _;
type Init = T;
unsafe fn init(init: <T as Pointable>::Init) -> usize
unsafe fn deref<'a>(ptr: usize) -> &'a T
unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T
unsafe fn drop(ptr: usize)

`impl<T> Read<Exclusive, BecauseExclusive> for PnmHeader where T: ?Sized,`

`impl<T> ToOwned for PnmHeader where T: Clone,`

type Owned = T;
fn to_owned(&self) -> T
fn clone_into(&self, target: &mut T)

`impl<T, U> Into<U> for PnmHeader where U: From<T>,`

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom<U> for PnmHeader where U: Into<T>,`

type Error = never;
fn try_from(value: U) -> Result<T, never>

`impl<T, U> TryInto<U> for PnmHeader where U: TryFrom<T>,`

type Error = <U as TryFrom<T>>::Error;
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>