import * as i0 from "@angular/core";
export interface TooltipRow {
    name: string;
    value: number | string;
    color: string;
    formattedValue?: string;
}
export interface TooltipState {
    visible: boolean;
    x: number;
    y: number;
    title: string;
    rows: TooltipRow[];
    pinned?: boolean;
}
export declare class ChartTooltipService {
    readonly state: import("@angular/core").WritableSignal<TooltipState | null>;
    show(x: number, y: number, title: string, rows: TooltipRow[]): void;
    hide(): void;
    togglePin(): void;
    /** Compute flip position if tooltip hits viewport right/bottom bounds */
    getAdjustedPosition(x: number, y: number, containerW: number, containerH: number, tooltipW?: number, tooltipH?: number): {
        left: number;
        top: number;
    };
    static ɵfac: i0.ɵɵFactoryDeclaration<ChartTooltipService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ChartTooltipService>;
}