import { IKeyObjectValue } from "../../../type";
export declare class Chart {
    private _bgColor?;
    private _fgColor?;
    private _leftVisibleBarTime?;
    private _rightVisibleBarTime?;
    isUseBgColor: boolean;
    updateOptions(options: IKeyObjectValue): void;
    get bg_color(): string | undefined;
    get fg_color(): string | undefined;
    get is_heikinashi(): boolean;
    get is_kagi(): boolean;
    get is_linebreak(): boolean;
    get is_pnf(): boolean;
    get is_range(): boolean;
    get is_renko(): boolean;
    get is_standard(): boolean;
    get left_visible_bar_time(): number | undefined;
    get right_visible_bar_time(): number | undefined;
    private _parseColor;
    private _parserRgbColor;
    private _contrastColor;
}