/**
 * Copyright 2023-present DreamNum Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import type { Documents, IViewportInfo, Scene, UniverRenderingContext } from '@univerjs/engine-render';
import { BaseObject } from '@univerjs/engine-render';
/** A paint-only overlay. It never participates in hit testing or selection. */
export declare class HeaderFooterContentCover extends BaseObject {
    private readonly _documents;
    private readonly _scene;
    color: string;
    constructor(key: string, _documents: Documents, _scene: Scene);
    render(ctx: UniverRenderingContext, viewport?: IViewportInfo): void;
    private _collectStoryBounds;
    private _collectDrawingBounds;
    private _transformBounds;
    private _appendClipped;
    private _collectTextAndTables;
}