Enum Transform 

#[non_exhaustive]
pub enum Transform {
    ResizeToLimit {
        width: u32,
        height: u32,
    },
    ResizeToFill {
        width: u32,
        height: u32,
    },
    Rotate {
        degrees: u16,
    },
    StripMetadata,
}

A single transform applied to the source image.

Transforms are applied in order and serialised to JSON for content addressing — the order matters for both the visual output and the cache key.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

ResizeToLimit

Resize to fit within width × height, preserving aspect ratio. Never upscales: an image smaller than the limit is stored as-is.

Fields

width: u32

Maximum output width in pixels.

height: u32

Maximum output height in pixels.

ResizeToFill

Resize and crop to exactly width × height, centred.

Fields

width: u32

Exact output width in pixels.

height: u32

Exact output height in pixels.

Rotate

Rotate clockwise by the given number of degrees. Values outside {90, 180, 270} are treated as no-op rotations.

Fields

degrees: u16

Clockwise rotation in degrees (0, 90, 180, or 270).

StripMetadata

Strip all embedded metadata (EXIF, GPS, ICC profiles, comment chunks).

Re-encoding through the image crate already drops EXIF data; this variant is a no-op on pixel data but explicitly documents the intent so the transform spec is unambiguous.

Implementations

impl Transform

pub const fn resize_to_limit(width: u32, height: u32) -> Self

Shorthand constructor for Transform::ResizeToLimit.

pub const fn resize_to_fill(width: u32, height: u32) -> Self

Shorthand constructor for Transform::ResizeToFill.

pub const fn rotate(degrees: u16) -> Self

Shorthand constructor for Transform::Rotate.

pub const fn strip_metadata() -> Self

Shorthand constructor for Transform::StripMetadata.

Trait Implementations

impl Clone for Transform

fn clone(&self) -> Transform

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Transform

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Transform

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Transform

impl Hash for Transform

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Transform

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Transform

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Transform