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Image

Struct Image 

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pub struct Image { /* private fields */ }
Available on crate feature images only.
Expand description

Immutable owned image bytes with a stable, process-unique reference.

Cloning preserves reference identity. References are opaque tokens, not security capabilities and not portable serialization identifiers.

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impl Image

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pub fn from_bytes(data: impl Into<Arc<[u8]>>) -> Result<Self>

Inspect owned bytes without decoding or modifying pixels.

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Returns InvalidImage for unsupported signatures, malformed inspected headers, animation, file/dimension/area limit violations, or exhausted reference identities. Successful inspection does not prove pixel decodability.

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pub fn from_path(path: impl AsRef<Path>) -> Result<Self>

Read a caller-selected local path, with a bounded read and redacted errors.

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Returns InvalidImage if the file cannot be opened/read or its bytes fail Image::from_bytes validation. Errors omit the supplied path.

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pub fn from_base64(text: &str) -> Result<Self>

Decode standard padded base64, ignoring whitespace; data URLs are rejected.

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Returns InvalidImage for a data-URL prefix, invalid base64, excessive encoded/decoded size, or any Image::from_bytes validation failure.

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pub fn bytes(&self) -> &[u8] ⓘ

Original immutable bytes.

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pub fn format(&self) -> ImageFormat

Encoding discovered from the file signature.

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pub fn width(&self) -> u32

Width in pixels.

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pub fn height(&self) -> u32

Height in pixels.

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pub fn size(&self) -> usize

Original encoded byte length.

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pub fn placeholder(&self) -> &str

Opaque reference to embed in state or question strings.

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pub fn diagnostics(&self) -> &[ImageDiagnostic]

Metadata observations that have not been applied to the pixels.

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pub fn base64(&self) -> String

Standard padded base64 of the original bytes.

Trait Implementations§

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impl Clone for Image

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for Image

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

Formats the value using the given formatter. Read more
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impl Display for Image

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl Freeze for Image

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impl RefUnwindSafe for Image

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impl Send for Image

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impl Sync for Image

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impl Unpin for Image

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impl UnsafeUnpin for Image

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impl UnwindSafe for Image

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more