import type { ExtensionMetadata, ISystem, MaskData } from '@pixi/core';
import type { Container } from '@pixi/display';
import type { Graphics } from '@pixi/graphics';
import type { CanvasRenderer } from './CanvasRenderer';
/**
 * A set of functions used to handle masking.
 *
 * Sprite masking is not supported on the CanvasRenderer.
 * @class
 * @memberof PIXI
 */
export declare class CanvasMaskSystem implements ISystem {
    /** @ignore */
    static extension: ExtensionMetadata;
    /** A reference to the current renderer */
    private renderer;
    private _foundShapes;
    /** @param renderer - A reference to the current renderer */
    constructor(renderer: CanvasRenderer);
    /**
     * This method adds it to the current stack of masks.
     * @param maskData - the maskData that will be pushed
     */
    pushMask(maskData: MaskData | Graphics): void;
    /**
     * Renders all PIXI.Graphics shapes in a subtree.
     * @param container - container to scan.
     * @param out - where to put found shapes
     */
    recursiveFindShapes(container: Container, out: Array<Graphics>): void;
    /**
     * Renders a PIXI.Graphics shape.
     * @param graphics - The object to render.
     */
    renderGraphicsShape(graphics: Graphics): void;
    /**
     * Restores the current drawing context to the state it was before the mask was applied.
     * @param renderer - The renderer context to use.
     */
    popMask(renderer: CanvasRenderer): void;
    /** Destroys this canvas mask manager. */
    destroy(): void;
}