import { ElementRef, TemplateRef } from '@angular/core';
import { type ExportFormat } from '../shared/chart-export-menu.component';
import { ChartDataPoint, fmtNum } from '../shared/chart-utils';
import * as i0 from "@angular/core";
export interface DonutRing {
    name: string;
    data: ChartDataPoint[];
}
export declare class NestedDonutChartComponent {
    readonly instanceId: string;
    private readonly exportSvc;
    rings: import("@angular/core").InputSignal<DonutRing[]>;
    height: import("@angular/core").InputSignal<number>;
    ringWidth: import("@angular/core").InputSignal<number>;
    ringGap: import("@angular/core").InputSignal<number>;
    showLegend: import("@angular/core").InputSignal<boolean>;
    showLabels: import("@angular/core").InputSignal<boolean>;
    colors: import("@angular/core").InputSignal<string[]>;
    showExport: import("@angular/core").InputSignal<boolean>;
    centerTitle: import("@angular/core").InputSignal<string>;
    centerValue: import("@angular/core").InputSignal<string>;
    tooltipTemplate: import("@angular/core").InputSignal<TemplateRef<any> | null>;
    sliceClick: import("@angular/core").OutputEmitterRef<{
        ring: string;
        label: string;
        value: number;
    }>;
    svgEl: import("@angular/core").Signal<ElementRef<SVGElement> | undefined>;
    containerWidth: import("@angular/core").WritableSignal<number>;
    tooltip: import("@angular/core").WritableSignal<{
        x: number;
        y: number;
        ring: string;
        label: string;
        value: number;
        color: string;
    } | null>;
    activeSlice: import("@angular/core").WritableSignal<{
        ring: string;
        label: string;
    } | null>;
    centerX: import("@angular/core").Signal<number>;
    centerY: import("@angular/core").Signal<number>;
    allCategories: import("@angular/core").Signal<string[]>;
    ringData: import("@angular/core").Signal<{
        name: string;
        slices: {
            label: string;
            value: number;
            startAngle: number;
            endAngle: number;
            innerRadius: number;
            outerRadius: number;
            color: string;
        }[];
    }[]>;
    constructor();
    polarToCartesian(centerX: number, centerY: number, radius: number, angleInDegrees: number): {
        x: number;
        y: number;
    };
    getArcPath(startAngle: number, endAngle: number, innerRadius: number, outerRadius: number): string;
    onMouseEnter(event: MouseEvent, ringName: string, slice: any): void;
    onMouseLeave(): void;
    onSliceClick(ring: string, slice: any): void;
    onExport(type: ExportFormat): void;
    fmtNum: typeof fmtNum;
    static ɵfac: i0.ɵɵFactoryDeclaration<NestedDonutChartComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<NestedDonutChartComponent, "ngx-nested-donut-chart", never, { "rings": { "alias": "rings"; "required": false; "isSignal": true; }; "height": { "alias": "height"; "required": false; "isSignal": true; }; "ringWidth": { "alias": "ringWidth"; "required": false; "isSignal": true; }; "ringGap": { "alias": "ringGap"; "required": false; "isSignal": true; }; "showLegend": { "alias": "showLegend"; "required": false; "isSignal": true; }; "showLabels": { "alias": "showLabels"; "required": false; "isSignal": true; }; "colors": { "alias": "colors"; "required": false; "isSignal": true; }; "showExport": { "alias": "showExport"; "required": false; "isSignal": true; }; "centerTitle": { "alias": "centerTitle"; "required": false; "isSignal": true; }; "centerValue": { "alias": "centerValue"; "required": false; "isSignal": true; }; "tooltipTemplate": { "alias": "tooltipTemplate"; "required": false; "isSignal": true; }; }, { "sliceClick": "sliceClick"; }, never, never, true, never>;
}