Struct Bitmap 

pub struct Bitmap(/* private fields */);

A decoded image the toolkit holds, released when the last handle drops.

Cheap to clone (an Rc), so several nodes and the canvas can draw the same decode. !Send like everything else that talks to the toolkit.

Implementations

impl Bitmap

pub fn id(&self) -> BitmapId

The id the toolkit knows this image by, which day_spec::ImageSource::Decoded carries.

pub fn info(&self) -> BitmapInfo

Pixel size, scale, format and alpha, read once at decode (docs/images.md).

pub fn properties(&self) -> Option<ImageProperties>

The metadata beyond the pixels: EXIF orientation, DPI, capture time. None where this backend ships no metadata reader; probe Cap::ImageProperties before offering an affordance that needs it.

pub fn encode(&self, spec: EncodeSpec) -> EncodeFuture

Encode back to bytes, in spec’s format. Await it inside day::task.

pub fn encode_async( &self, spec: EncodeSpec, on_done: impl FnOnce(Result<Vec<u8>, ImageError>) + 'static, )

Bitmap::encode’s callback half, for a call site that is not already async.

Trait Implementations

impl Clone for Bitmap

fn clone(&self) -> Bitmap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Bitmap

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

Formats the value using the given formatter.

impl PartialEq for Bitmap

Two handles are the same image when they name the same decode.

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

Equality operator ==.

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

Inequality operator !=.