Enum `Extension`

#[repr(u8)]
pub enum Extension

Known GIF extension labels.

These are extensions which may be interpreted by the library and to which a specification with the internal data layout is known.

Variants

Text = 0x01

Plain Text extension.

This instructs the decoder to render a text as characters in a grid of cells, in a mono-spaced font of its choosing. This is seldom actually implemented and ignored by ImageMagick. The color is always taken from the global table which further complicates any use. No real information on the frame sequencing of this block is available in the standard.

Control = 0xF9

Control extension.

Comment = 0xFE

Comment extension.

Application = 0xFF

Application extension.

See ImageMagick for an idea of commonly recognized extensions.

Implementations

`impl Extension`

const fn from_u8(n: u8) -> Option<Self>: Converts u8 to a Extension if it is known.

Trait Implementations

`impl Clone for Extension`

fn clone(&self) -> Extension

`impl Copy for Extension`

`impl Debug for Extension`

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

`impl Eq for Extension`

`impl PartialEq for Extension`

fn eq(&self, other: &Extension) -> bool

`impl StructuralPartialEq for Extension`

Auto Trait Implementations

`impl Freeze for Extension`

`impl RefUnwindSafe for Extension`

`impl Send for Extension`

`impl Sync for Extension`

`impl Unpin for Extension`

`impl UnsafeUnpin for Extension`

`impl UnwindSafe for Extension`

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

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

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

`impl<T> From<T> for Extension`

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

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

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

`impl<T, U> Into<U> for Extension 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 Extension where U: Into<T>,`

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

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

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