/**
 例子：
     var ctrl = new ScrollSelector({
        element: "#div1",
        showRows: 5,
        bgColor: "#F5F5F5",
        data:[2500,3800,-8966,2112,2323,31221,21212,7878,894646]
    });
    ctrl.onchange = function () {
        console.log(ctrl.selectedIndex);
    }
 * */
declare class ScrollSelector {
    option: ScrollSelectorOption;
    onchange: (sender: ScrollSelector) => any;
    private _offsetTop;
    private _selectedIndex;
    get selectedIndex(): number;
    set selectedIndex(value: number);
    private canvas;
    private ctx;
    constructor(option: ScrollSelectorOption);
    dispose(): void;
    setData(data: any[]): void;
    private moveTo;
    private getPixelRatio;
    private init;
    private draw;
}
declare class ScrollSelectorOption {
    data: any[];
    element: HTMLElement;
    bgColor: string;
    showRows: number;
    selectedTextColor: string;
    textColor: string;
}