Trait HTMLCanvasElementMethods 

pub trait HTMLCanvasElementMethods<D: DomTypes> {
    // Required methods
    fn Width(&self) -> u32;
    fn SetWidth(&self, cx: &mut JSContext, value: u32) -> ErrorResult;
    fn Height(&self) -> u32;
    fn SetHeight(&self, cx: &mut JSContext, value: u32) -> ErrorResult;
    fn GetContext(
        &self,
        cx: &mut JSContext,
        contextId: DOMString,
        options: HandleValue<'_>,
    ) -> Fallible<Option<CanvasRenderingContext2DOrImageBitmapRenderingContextOrWebGLRenderingContextOrWebGL2RenderingContextOrGPUCanvasContext<D>>>;
    fn ToDataURL(
        &self,
        type_: DOMString,
        quality: HandleValue<'_>,
    ) -> Fallible<USVString>;
    fn ToBlob(
        &self,
        callback: RootedCallback<BlobCallback<D>>,
        type_: DOMString,
        quality: HandleValue<'_>,
    ) -> Fallible<()>;
    fn TransferControlToOffscreen(
        &self,
        cx: &mut JSContext,
    ) -> Fallible<DomRoot<D::OffscreenCanvas>>;
    fn CaptureStream(
        &self,
        cx: &mut JSContext,
        frameRequestRate: Option<Finite<f64>>,
    ) -> DomRoot<D::MediaStream>;
}

Required Methods

fn Width(&self) -> u32

fn SetWidth(&self, cx: &mut JSContext, value: u32) -> ErrorResult

fn Height(&self) -> u32

fn SetHeight(&self, cx: &mut JSContext, value: u32) -> ErrorResult

fn GetContext( &self, cx: &mut JSContext, contextId: DOMString, options: HandleValue<'_>, ) -> Fallible<Option<CanvasRenderingContext2DOrImageBitmapRenderingContextOrWebGLRenderingContextOrWebGL2RenderingContextOrGPUCanvasContext<D>>>

fn ToDataURL( &self, type_: DOMString, quality: HandleValue<'_>, ) -> Fallible<USVString>

fn ToBlob( &self, callback: RootedCallback<BlobCallback<D>>, type_: DOMString, quality: HandleValue<'_>, ) -> Fallible<()>

fn TransferControlToOffscreen( &self, cx: &mut JSContext, ) -> Fallible<DomRoot<D::OffscreenCanvas>>

fn CaptureStream( &self, cx: &mut JSContext, frameRequestRate: Option<Finite<f64>>, ) -> DomRoot<D::MediaStream>

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors