import { IDimension, IStoreState } from '../index.data';
import { SpreadSheetRuntime } from '../RuntimeContext';
export declare function inFrozenArea(state: IStoreState): boolean;
/**
 * 根据上述exceeds, 重新设置 scrollX/scrollY
 */
export declare function tryMoveSelectedIntoView(context: SpreadSheetRuntime, dim: IDimension): boolean;
/**
 * 计算scrollX/scrollY, 使选中的区域移到屏幕内
 * @param state
 * @param 当前选区的位置, 可以很容易地判断哪个方向在选区外. 这个参数是冗余的, 但避免了重复计算
 * @return
 */
export declare function getScrollByMoveSelectIntoView(state: IStoreState, dim: IDimension): {
    scrollX: number;
    scrollY: number;
};
/**
 * 当selectedRow底部超出视口时, 重新计算scrollY, 使底部上升到视口中
 * @param state
 * @param viewport
 * @param _rowIndex
 * @return 新的scrollY, 此scrollY将使rowIndex代表的行滚动到视口内部
 */
export declare function getScrollYMadeBottomVisible_whenBottomExceed(state: IStoreState, viewport: {
    w: number;
    h: number;
}, _rowIndex: number): number;
export declare function getScrollYMadeTopVisible_whenTopExceed(state: IStoreState, viewport: {
    w: number;
    h: number;
}, _rowIndex: number): number;
export declare function getScrollXMadeLeftVisible_whenLeftExceed(state: IStoreState, viewport: {
    w: number;
    h: number;
}, _colIndex: number): number;