import { IRenderer } from './IRenderer';
export interface SVGLinearGradient {
    type: 'linear';
    id?: string;
    x0: number;
    y0: number;
    x1: number;
    y1: number;
    colorStops: {
        stop: number;
        color: string;
    }[];
    createMatrix: number[];
}
export declare class SVGRenderer implements IRenderer {
    /** Backend discriminator; see {@link IRenderer.kind}. */
    readonly kind = "svg";
    private width;
    private height;
    private buffer;
    private defsBuffer;
    private currentPath;
    private mStack;
    private ma;
    private mb;
    private mc;
    private md;
    private me;
    private mf;
    private alphaStack;
    private globalAlpha;
    private clipDepthStack;
    private clipDepth;
    private clipCounter;
    private batchCircles;
    private batchMatrix;
    private batchColor;
    private batchAlpha;
    private batchActive;
    private gradientCounter;
    private gradientCache;
    constructor(width: number, height: number);
    clear(): void;
    save(): void;
    restore(): void;
    translate(dx: number, dy: number): void;
    scale(sx: number, sy: number): void;
    rotate(angle: number): void;
    setGlobalAlpha(alpha: number): void;
    beginPath(): void;
    moveTo(x: number, y: number): void;
    lineTo(x: number, y: number): void;
    bezierCurveTo(cp1x: number, cp1y: number, cp2x: number, cp2y: number, x: number, y: number): void;
    closePath(): void;
    arc(x: number, y: number, r: number, startAngle: number, endAngle: number, ccw?: boolean): void;
    roundRect(x: number, y: number, w: number, h: number, radii: number | number[]): void;
    fill(colorOrGradient: string | SVGLinearGradient): void;
    stroke(colorOrGradient: string | SVGLinearGradient, lineWidth?: number): void;
    fillText(text: string, x: number, y: number, font: string, color: string | SVGLinearGradient): void;
    fillCircle(cx: number, cy: number, radius: number, color: string, alpha?: number): void;
    drawImage(source: any, dx: number, dy: number, dw: number, dh: number): void;
    /**
     * Embed SVG markup as an isolated nested image.
     *
     * This explicit path is used by `SVGEntity` during vector export. General
     * `drawImage()` input remains subject to the URL policy and therefore still
     * rejects caller-provided SVG data URLs.
     */
    drawSVG(source: string, dx: number, dy: number, dw: number, dh: number): void;
    flush(): void;
    createLinearGradient(x0: number, y0: number, x1: number, y1: number, colorStops: {
        stop: number;
        color: string;
    }[]): SVGLinearGradient;
    clip(x: number, y: number, width: number, height: number, radii?: number | number[]): void;
    toXMLString(): string;
    private resolveGradient;
    private escapeXML;
    private isSafeRasterDataUrl;
    /**
     * SVGRenderer accumulates strings in memory; nothing external is allocated.
     * Drop the buffers for GC and become idempotent.
     */
    dispose(): void;
}