import type { QText } from './qtext';
declare class QCanvasViewer {
    width: number;
    height: number;
    background: HTMLImageElement | ImageBitmap;
    backgroundSize?: [x: number, y: number];
    scaleX: number;
    scaleY: number;
    renderCanvas: HTMLCanvasElement;
    renderContext: CanvasRenderingContext2D;
    textList: QText[];
    devicePixelRatio: number;
    flipY: boolean;
    constructor(canvas: string | HTMLCanvasElement, width: number, height: number, scaleX?: number, scaleY?: number, flipY?: boolean);
    initDimension(width: number, height: number, scaleX?: number, scaleY?: number): void;
    clearText(): void;
    clearCanvasWithContext(ctx: CanvasRenderingContext2D): void;
    clearCanvas(): void;
    addObject(text: QText): void;
    render(): void;
}
export { QCanvasViewer };