Struct raw_window_handle::WebCanvasWindowHandle

#[non_exhaustive]
pub struct WebCanvasWindowHandle {
    pub obj: NonNull<c_void>,
}

Raw window handle for a Web canvas registered via wasm-bindgen.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

obj: NonNull<c_void>

A pointer to the JsValue of an HtmlCanvasElement.

Note: This uses c_void to avoid depending on wasm-bindgen directly.

Implementations

impl WebCanvasWindowHandle

pub fn new(obj: NonNull<c_void>) -> Self

Create a new handle from a pointer to HtmlCanvasElement.

Example

let canvas: &HtmlCanvasElement;
let value: &JsValue = &canvas; // Deref to `JsValue`
let obj: NonNull<c_void> = NonNull::from(value).cast();
let mut handle = WebCanvasWindowHandle::new(obj);

Trait Implementations

impl Clone for WebCanvasWindowHandle

fn clone(&self) -> WebCanvasWindowHandle

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for WebCanvasWindowHandle

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

Formats the value using the given formatter.

impl From<WebCanvasWindowHandle> for RawWindowHandle

fn from(value: WebCanvasWindowHandle) -> Self

Converts to this type from the input type.

impl Hash for WebCanvasWindowHandle

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 WebCanvasWindowHandle

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for WebCanvasWindowHandle

impl Eq for WebCanvasWindowHandle

impl StructuralEq for WebCanvasWindowHandle

impl StructuralPartialEq for WebCanvasWindowHandle