import { IStyleDeclaration } from '@daign/style-sheets';
/**
 * Implementation of IStyleDeclaration.
 */
export declare class GraphicStyle implements IStyleDeclaration {
    fill: string | null;
    fillOpacity: number | null;
    fillRule: string | null;
    stroke: string | null;
    strokeWidth: number | null;
    strokeOpacity: number | null;
    strokeLinecap: string | null;
    strokeLinejoin: string | null;
    strokeMiterlimit: number | null;
    strokeDasharray: string | null;
    strokeDashoffset: number | null;
    vectorEffect: string | null;
    display: string | null;
    visibility: string | null;
    opacity: number | null;
    paintOrder: string | null;
    mask: string | null;
    fontFamily: string | null;
    fontSize: string | null;
    fontStyle: string | null;
    fontVariant: string | null;
    fontWeight: string | null;
    fontStretch: string | null;
    letterSpacing: string | null;
    wordSpacing: string | null;
    textDecoration: string | null;
    pointerEvents: string | null;
    cursor: string | null;
    /**
     * Returns whether the declaration is empty (all attributes are equal null).
     */
    get isEmpty(): boolean;
    /**
     * Constructor.
     * @param fill - Optional.
     * @param fillOpacity - Optional.
     * @param fillRule - Optional.
     * @param stroke - Optional.
     * @param strokeWidth - Optional.
     * @param strokeOpacity - Optional.
     * @param strokeLinecap - Optional.
     * @param strokeLinejoin - Optional.
     * @param strokeMiterlimit - Optional.
     * @param strokeDasharray - Optional.
     * @param strokeDashoffset - Optional.
     * @param vectorEffect - Optional.
     * @param display - Optional.
     * @param visibility - Optional.
     * @param opacity - Optional.
     * @param paintOrder - Optional.
     * @param mask - Optional.
     * @param fontFamily - Optional.
     * @param fontSize - Optional.
     * @param fontStyle - Optional.
     * @param fontVariant - Optional.
     * @param fontWeight - Optional.
     * @param fontStretch - Optional.
     * @param letterSpacing - Optional.
     * @param wordSpacing - Optional.
     * @param textDecoration - Optional.
     * @param pointerEvents - Optional.
     * @param cursor - Optional.
     */
    constructor(fill?: string, fillOpacity?: number, fillRule?: string, stroke?: string, strokeWidth?: number, strokeOpacity?: number, strokeLinecap?: string, strokeLinejoin?: string, strokeMiterlimit?: number, strokeDasharray?: string, strokeDashoffset?: number, vectorEffect?: string, display?: string, visibility?: string, opacity?: number, paintOrder?: string, mask?: string, fontFamily?: string, fontSize?: string, fontStyle?: string, fontVariant?: string, fontWeight?: string, fontStretch?: string, letterSpacing?: string, wordSpacing?: string, textDecoration?: string, pointerEvents?: string, cursor?: string);
    /**
     * Parse the value of an attribute from string.
     * @param name - The name of the attribute.
     * @param value - The value as a string.
     */
    parseAttribute(name: string, value: string): void;
    /**
     * Copy style attributes from given style declaration but don't override already existing values.
     * @param declaration - The style declaration whose values to use.
     */
    complementWith(declaration: GraphicStyle): void;
    /**
     * Return the concatenated style declaration as string.
     * @returns The concatenated style declaration as string.
     */
    printStyle(): string;
}