import { type ParticleColor } from "@galacean/editor-ui";
import { type Color } from "@galacean/editor-ui";
export type GradientPropertyType = "constant" | "gradient" | "two-constant" | "two-gradient";
export type IEngineParticleColor = {
    color: {
        value: Color;
        time: number;
    }[];
    alpha: {
        value: number;
        time: number;
    }[];
};
export type ConstantValue = {
    type: "constant";
    label?: string;
    value: Color;
};
export type TwoConstantValue = {
    type: "two-constant";
    label?: string;
    value: [Color, Color];
};
export type GradientValue = {
    type: "gradient";
    label?: string;
    value: IEngineParticleColor;
};
export type GradientInsideValue = {
    type: "gradient";
    label?: string;
    value: ParticleColor;
};
export type TwoGradientValue = {
    type: "two-gradient";
    label?: string;
    value: [IEngineParticleColor, IEngineParticleColor];
};
export type TwoGradientInsideValue = {
    type: "two-gradient";
    label?: string;
    value: [ParticleColor, ParticleColor];
};
export type ParticleColorValue = ConstantValue | TwoConstantValue | GradientValue | TwoGradientValue;
export type ParticleColorInsideValue = ConstantValue | TwoConstantValue | GradientInsideValue | TwoGradientInsideValue;
export interface FormItemGradientProps {
    type?: GradientPropertyType;
    label: string;
    info?: string;
    labelFirst?: boolean;
    value: ParticleColorValue[];
    onValueChange?: (value: FormItemGradientProps["value"], type: GradientPropertyType) => void;
}
export declare function FormItemGradient(props: FormItemGradientProps): import("react/jsx-runtime").JSX.Element;