import { Matrix } from '../css/property-descriptors/transform';
import { Path } from './path';
export declare const enum EffectType {
    TRANSFORM = 0,
    CLIP = 1,
    OPACITY = 2,
    CLIP_PATH = 3
}
export declare const enum EffectTarget {
    BACKGROUND_BORDERS = 2,
    CONTENT = 4
}
export interface IElementEffect {
    readonly type: EffectType;
    readonly target: number;
}
export declare class TransformEffect implements IElementEffect {
    readonly offsetX: number;
    readonly offsetY: number;
    readonly matrix: Matrix;
    readonly type: EffectType;
    readonly target: number;
    constructor(offsetX: number, offsetY: number, matrix: Matrix);
}
export declare class ClipEffect implements IElementEffect {
    readonly path: Path[];
    readonly target: EffectTarget;
    readonly type: EffectType;
    constructor(path: Path[], target: EffectTarget);
}
export declare class OpacityEffect implements IElementEffect {
    readonly opacity: number;
    readonly type: EffectType;
    readonly target: number;
    constructor(opacity: number);
}
/**
 * Clips the element and all its descendants to an arbitrary canvas-drawn shape.
 * The `applyClip` callback is responsible for calling beginPath, the shape
 * operations, and ctx.clip() — giving each shape type full control over how
 * the path is constructed (arc, ellipse, lineTo, Path2D, etc.).
 */
export declare class ClipPathEffect implements IElementEffect {
    readonly applyClip: (ctx: CanvasRenderingContext2D) => void;
    readonly type: EffectType;
    readonly target: number;
    constructor(applyClip: (ctx: CanvasRenderingContext2D) => void);
}
export declare const isTransformEffect: (effect: IElementEffect) => effect is TransformEffect;
export declare const isClipEffect: (effect: IElementEffect) => effect is ClipEffect;
export declare const isOpacityEffect: (effect: IElementEffect) => effect is OpacityEffect;
export declare const isClipPathEffect: (effect: IElementEffect) => effect is ClipPathEffect;