@nightingale-elements/nightingale-new-core/dist/mixins/withCanvas/index.d.ts

Base Elements for Nightingale Components

import { Selection } from "d3";
import NightingaleBaseElement, { Constructor } from "../../nightingale-base-element";
import { WithResizableInterface } from "../withResizable";
export interface WithCanvasInterface {
    /** D3 selection with this element's <canvas> node. Is automatically set to the first ancestor <canvas> node when first rendered. */
    canvas?: Selection<HTMLCanvasElement, unknown, HTMLElement, unknown>;
    /** Canvas rendering context. */
    canvasCtx?: CanvasRenderingContext2D;
    /** Ratio of canvas logical size versus canvas display size. */
    canvasScale: number;
    /** Runs when device pixel ratio (`this.canvasScale`) changes, e.g. when browser zoom is changed or browser window is moved to a different screen. */
    onCanvasScaleChange(): void;
    /** Adjust width and height of `this.canvasCtx` based on canvas size and scale if needed (clears canvas content!). Subclass should call this method just before redrawing the canvas. */
    adjustCanvasCtxLogicalSize(): void;
}
declare const withCanvas: <T extends Constructor<NightingaleBaseElement & WithResizableInterface>>(superClass: T) => Constructor<WithCanvasInterface> & T;
export default withCanvas;
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