Struct WebImage 

pub struct WebImage { /* private fields */ }

Implementations

impl WebImage

pub fn new(raw_pixels: Vec<u8>, width: u32, height: u32) -> Self

pub fn try_from_byte_slice(bytes: &[u8]) -> Result<WebImage, WebImageError>

Try to create a new WebImage from a byte slice

returns: Result<WebImage, WebImageError>

Errors

Errors if there’s an error while decoding the image from given data

pub async fn try_from_blob(blob: Blob) -> Result<WebImage, WebImageError>

Try to create a new WebImage from a blob

returns: Result<WebImage, WebImageError>

Errors

Errors if there’s an error while decoding the image from given data

pub fn try_into_image_data(self) -> Result<ImageData, JsValue>

Try to convert a WebImage to ImageDate that can be used with ImageData web APIs

returns: Result<ImageData, JsValue>

Errors

Errors if the web API throws an exception

pub async fn into_image_bitmap(self) -> Result<ImageBitmap, JsValue>

Try to convert a WebImage to ImageBitmap that can be used with canvas APIs

returns: Result<ImageBitmap, JsValue>

Errors

Errors if the web API throws an exception

pub fn raw_pixels(self) -> Vec<u8>

pub fn width(&self) -> u32

pub fn height(&self) -> u32

impl WebImage

pub fn resize( self, max_width: u32, max_height: u32, ) -> Result<WebImage, WebImageError>

Resize this image while preserving aspect ratio. The image is scaled to the maximum possible size that fits within the bounds specified by max_width and max_height.

returns: Result<WebImage, WebImageError>

Errors

Errors if conversion to DynamicImage fails

pub fn resize_exact( self, width: u32, height: u32, ) -> Result<WebImage, WebImageError>

Resize this image while ignoring aspect ratio. The width and height provided become the new dimensions for the image

returns: Result<WebImage, WebImageError>

Errors

Errors if conversion to DynamicImage fails

pub fn resize_to_fill( self, width: u32, height: u32, ) -> Result<WebImage, WebImageError>

Resize this image while preserving aspect ratio. The image is scaled to the maximum possible size that fits within the larger (relative to aspect ratio) of the bounds specified by width and height, then cropped to fit within the other bound.

returns: Result<WebImage, WebImageError>

Errors

Errors if conversion to DynamicImage fails

Trait Implementations

impl Clone for WebImage

fn clone(&self) -> WebImage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl From<&DynamicImage> for WebImage

fn from(image: &DynamicImage) -> Self

Converts to this type from the input type.

impl From<WebImage> for JsValue

fn from(value: WebImage) -> Self

Converts to this type from the input type.

impl FromWasmAbi for WebImage

type Abi = u32

The Wasm ABI type that this converts from when coming back out from the ABI boundary.

unsafe fn from_abi(js: u32) -> Self

Recover a Self from Self::Abi.

impl IntoWasmAbi for WebImage

type Abi = u32

The Wasm ABI type that this converts into when crossing the ABI boundary.

fn into_abi(self) -> u32

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary.

impl LongRefFromWasmAbi for WebImage

type Abi = u32

Same as RefFromWasmAbi::Abi

type Anchor = RcRef<WebImage>

Same as RefFromWasmAbi::Anchor

unsafe fn long_ref_from_abi(js: Self::Abi) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi

impl OptionFromWasmAbi for WebImage

fn is_none(abi: &Self::Abi) -> bool

Tests whether the argument is a “none” instance. If so it will be deserialized as None, and otherwise it will be passed to FromWasmAbi.

impl OptionIntoWasmAbi for WebImage

fn none() -> Self::Abi

Returns an ABI instance indicating “none”, which JS will interpret as the None branch of this option.

impl RefFromWasmAbi for WebImage

type Abi = u32

The Wasm ABI type references to Self are recovered from.

type Anchor = RcRef<WebImage>

The type that holds the reference to Self for the duration of the invocation of the function that has an &Self parameter. This is required to ensure that the lifetimes don’t persist beyond one function call, and so that they remain anonymous.

unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor

Recover a Self::Anchor from Self::Abi.

impl RefMutFromWasmAbi for WebImage

type Abi = u32

Same as RefFromWasmAbi::Abi

type Anchor = RcRefMut<WebImage>

Same as RefFromWasmAbi::Anchor

unsafe fn ref_mut_from_abi(js: Self::Abi) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi

impl TryFrom<WebImage> for DynamicImage

type Error = WebImageError

The type returned in the event of a conversion error.

fn try_from(value: WebImage) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFromJsValue for WebImage

fn try_from_js_value(value: JsValue) -> Result<Self, JsValue>

Performs the conversion.

fn try_from_js_value_ref(value: &JsValue) -> Option<Self>

Performs the conversion.

impl VectorFromWasmAbi for WebImage

type Abi = <Box<[JsValue]> as FromWasmAbi>::Abi

unsafe fn vector_from_abi(js: Self::Abi) -> Box<[WebImage]>

impl VectorIntoWasmAbi for WebImage

type Abi = <Box<[JsValue]> as IntoWasmAbi>::Abi

fn vector_into_abi(vector: Box<[WebImage]>) -> Self::Abi

impl WasmDescribe for WebImage

fn describe()

impl WasmDescribeVector for WebImage

fn describe_vector()

impl SupportsConstructor for WebImage

impl SupportsInstanceProperty for WebImage

impl SupportsStaticProperty for WebImage