export declare const drawLine: (ctx: CanvasRenderingContext2D, startX: number, startY: number, endX: number, endY: number, color?: string) => void;
export declare const drawRect: (ctx: CanvasRenderingContext2D, startX: number, startY: number, width: number, height: number, color?: string) => void;
export declare const text2Ellipsis: (ctx: CanvasRenderingContext2D, str: string, maxWidth: number, ellipsis?: string) => string;
export declare const noData: (ctx: CanvasRenderingContext2D, x: number, y: number, w: number, h: number, originW?: number) => void;