/// <reference types="offscreencanvas" />
import { PAGView as NativePAGView } from '../pag-view';
import type { PAGComposition } from '../pag-composition';
export interface PAGViewOptions {
    /**
     * Render first frame when pag view init. default true.
     */
    firstFrame?: boolean;
}
export declare type wxCanvas = (HTMLCanvasElement | OffscreenCanvas) & {
    requestAnimationFrame: (callback: () => void) => number;
    cancelAnimationFrame: (requestID: number) => void;
};
export declare class PAGView extends NativePAGView {
    /**
     * Create pag view.
     * @param file pag file.
     * @param canvas target render canvas.
     * @param initOptions pag view options
     * @returns
     */
    static init(file: PAGComposition, canvas: HTMLCanvasElement | OffscreenCanvas, initOptions?: PAGViewOptions): Promise<PAGView>;
    protected pagViewOptions: PAGViewOptions;
    /**
     * Update size when changed canvas size.
     */
    updateSize(): void;
    protected flushLoop(): Promise<void>;
    protected flushNextFrame(): Promise<boolean>;
    protected getNowTime(): number;
    protected clearTimer(): void;
    protected resetSize(): void;
}