API Reference > imodeljs-frontend > Rendering > CanvasDecoration CanvasDecoration Interface A Decoration that is drawn onto the 2d canvas on top of a ScreenViewport. CanvasDecorations may be pickable by implementing CanvasDecoration.pick. Implemented by Marker SpriteLocation Methods Name Description drawDecoration(ctx: CanvasRenderingContext2D): void Required method to draw this decoration into the supplied CanvasRenderingContext2D. onMouseButton(ev: BeButtonEvent): boolean Optional Optional method to be called whenever this decorator is picked and a mouse button is pressed or released inside this decoration. onMouseEnter(ev: BeButtonEvent): void Optional Optional method to be called whenever this decorator is picked and the mouse first enters this decoration. onMouseLeave(): void Optional Optional method to be called whenever when the mouse leaves this decoration. onMouseMove(ev: BeButtonEvent): void Optional Optional method to be called whenever when the mouse moves inside this decoration. onWheel(ev: BeWheelEvent): boolean Optional Optional method to be called when the mouse wheel is rolled with the pointer over this decoration. pick(pt: XAndY): boolean Optional Optional method to provide feedback when mouse events occur on this decoration. Properties Name Type Description decorationCursor undefined | string Cursor to use when mouse is inside this decoration. position undefined | XAndY Optional view coordinates position of this overlay decoration. Defined in core/frontend/src/render/CanvasDecoration.ts Line 20 Last Updated: 13 June, 2024