import Tooltip from './tooltip';
export default class CanvasTooltip extends Tooltip {
    private isShow;
    render(): void;
    open(fromEvent?: boolean): void;
    close(): void;
    private drawTooltipInCartesian;
    private drawTooltipInPolar;
    private drawTooltipWithImage;
    private drawTooltipWithImageInWeb;
    private drawTooltipWithImageInMp;
}