import { ElementRef } from '@angular/core';
import { fmtNum } from '../shared/chart-utils';
import * as i0 from "@angular/core";
export interface SunburstNode {
    label: string;
    value?: number;
    color?: string;
    children?: SunburstNode[];
}
interface SunburstSlice {
    id: string;
    label: string;
    value: number;
    depth: number;
    startAngle: number;
    endAngle: number;
    path: string;
    color: string;
    parentPath: string;
    pct: number;
}
export declare class SunburstChartComponent {
    data: import("@angular/core").InputSignal<SunburstNode[]>;
    height: import("@angular/core").InputSignal<number>;
    showLegend: import("@angular/core").InputSignal<boolean>;
    showLabels: import("@angular/core").InputSignal<boolean>;
    theme: import("@angular/core").InputSignal<"light" | "dark">;
    colors: import("@angular/core").InputSignal<string[]>;
    showExport: import("@angular/core").InputSignal<boolean>;
    exportMenuOpen: import("@angular/core").WritableSignal<boolean>;
    hoveredSliceId: import("@angular/core").WritableSignal<string | null>;
    tooltip: import("@angular/core").WritableSignal<{
        x: number;
        y: number;
        label: string;
        parentPath: string;
        value: number;
        pct: number;
        color: string;
    } | null>;
    svgEl: import("@angular/core").Signal<ElementRef<SVGElement> | undefined>;
    cx: import("@angular/core").Signal<number>;
    cy: import("@angular/core").Signal<number>;
    radius: import("@angular/core").Signal<number>;
    topLevelNodes: import("@angular/core").Signal<SunburstNode[]>;
    maxDepth: import("@angular/core").Signal<number>;
    getNodeValue(node: SunburstNode): number;
    private adjustColorBrightness;
    private ringPath;
    slices: import("@angular/core").Signal<SunburstSlice[]>;
    labelTransform(slice: SunburstSlice): string;
    onSliceHover(event: MouseEvent, slice: SunburstSlice): void;
    onSliceLeave(): void;
    toggleExportMenu(event: MouseEvent): void;
    onExport(type: 'json' | 'csv' | 'svg'): void;
    exportToCsv(): void;
    exportToJson(): void;
    exportToSvg(): void;
    readonly fmtNum: typeof fmtNum;
    static ɵfac: i0.ɵɵFactoryDeclaration<SunburstChartComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<SunburstChartComponent, "ngx-sunburst-chart", never, { "data": { "alias": "data"; "required": false; "isSignal": true; }; "height": { "alias": "height"; "required": false; "isSignal": true; }; "showLegend": { "alias": "showLegend"; "required": false; "isSignal": true; }; "showLabels": { "alias": "showLabels"; "required": false; "isSignal": true; }; "theme": { "alias": "theme"; "required": false; "isSignal": true; }; "colors": { "alias": "colors"; "required": false; "isSignal": true; }; "showExport": { "alias": "showExport"; "required": false; "isSignal": true; }; }, {}, never, never, true, never>;
}
export {};