CanvasDecoration Interface
A Decoration that is drawn onto the 2d canvas on top of a ScreenViewport. CanvasDecorations may be pickable by implementing CanvasDecoration.pick.
extensions
Implemented by
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: Readonly<WritableXAndY>): 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 | Readonly<WritableXAndY> | Optional view coordinates position of this overlay decoration. |
Defined in
Last Updated: 20 June, 2023