import { ElementRef } from '@angular/core';
import type { ExportFormat } from '../shared/chart-export-menu.component';
import { ChartDataPoint } from '../shared/chart-utils';
import * as i0 from "@angular/core";
export declare class PolarAreaChartComponent {
    private readonly exportSvc;
    data: import("@angular/core").InputSignal<ChartDataPoint[]>;
    height: 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>;
    sliceClick: import("@angular/core").OutputEmitterRef<ChartDataPoint>;
    svgEl: import("@angular/core").Signal<ElementRef<SVGElement> | undefined>;
    hovered: import("@angular/core").WritableSignal<number>;
    tooltip: import("@angular/core").WritableSignal<{
        x: number;
        y: number;
        label: string;
        value: number;
        color: string;
    } | null>;
    svgSize: import("@angular/core").Signal<number>;
    cx: import("@angular/core").Signal<number>;
    cy: import("@angular/core").Signal<number>;
    maxRadius: import("@angular/core").Signal<number>;
    private maxValue;
    gridLevels: import("@angular/core").Signal<{
        value: number;
        radius: number;
    }[]>;
    slices: import("@angular/core").Signal<{
        index: number;
        label: string;
        value: number;
        color: string;
        path: string;
        midAngle: number;
        radius: number;
    }[]>;
    labelX(s: {
        midAngle: number;
        radius: number;
    }): number;
    labelY(s: {
        midAngle: number;
        radius: number;
    }): number;
    onSliceHover(event: MouseEvent, slice: {
        label: string;
        value: number;
        color: string;
    }): void;
    onSliceClick(slice: {
        label: string;
        value: number;
        color?: string;
    }): void;
    onExport(type: ExportFormat): void;
    exportToJson(): void;
    exportToCsv(): void;
    exportToSvg(): void;
    exportToPdf(): void;
    formatNumber(v: number): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<PolarAreaChartComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<PolarAreaChartComponent, "ngx-polar-area-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; }; "colors": { "alias": "colors"; "required": false; "isSignal": true; }; "showExport": { "alias": "showExport"; "required": false; "isSignal": true; }; }, { "sliceClick": "sliceClick"; }, never, never, true, never>;
}