import { Editor, BlockElement } from "../interface";
export interface IRect {
    x: number;
    y: number;
    width: number;
    height: number;
}
export declare class DragSnapshot {
    private static readonly SNAPSHOT_SCALE;
    private static readonly SCALE_HEIGHT_THRESHOLD;
    private static readonly SNAPSHOT_CONTAINER;
    private popover;
    private cursorLayer;
    private scrollElement;
    private editor;
    private isShow;
    private createCursorLayer;
    constructor(editor: Editor);
    destroy(): void;
    createSnapshot(target: IRect | BlockElement): Promise<HTMLDivElement>;
    showSnapshot(left: number, top: number, content: HTMLElement): void;
    show(event: MouseEvent, target: IRect | BlockElement): Promise<void>;
    private handleBlock;
    private handleBlocks;
    private handleContentSize;
    showDom(left: number, top: number, target: BlockElement | BlockElement[]): void;
    hide(): void;
}