Trait HTMLCanvasElementMethods 

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

Required Methods

fn Width(&self) -> u32

fn SetWidth(&self, cx: &mut JSContext, value: u32) -> Result<(), Error>

fn Height(&self) -> u32

fn SetHeight(&self, cx: &mut JSContext, value: u32) -> Result<(), Error>

fn GetContext( &self, cx: &mut JSContext, contextId: DOMString, options: Handle<'_, Value>, ) -> Result<Option<CanvasRenderingContext2DOrImageBitmapRenderingContextOrWebGLRenderingContextOrWebGL2RenderingContextOrGPUCanvasContext<D>>, Error>

fn ToDataURL( &self, type_: DOMString, quality: Handle<'_, Value>, ) -> Result<USVString, Error>

fn ToBlob( &self, callback: RootedCallback<BlobCallback<D>>, type_: DOMString, quality: Handle<'_, Value>, ) -> Result<(), Error>

fn TransferControlToOffscreen( &self, cx: &mut JSContext, ) -> Result<Root<Dom<<D as DomTypes>::OffscreenCanvas>>, Error>

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

Dyn Compatibility

This trait is dyn compatible.

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

Implementors