import * as _angular_core from '@angular/core';

/** One bar's worth of data. */
interface WrBarChartDatum {
    readonly label: string;
    readonly value: number;
    readonly color?: string;
}

/**
 * Minimal vertical bar chart. Pass `[data]` — each datum becomes a bar.
 * Axis-free; for the simple "show me a comparison" case.
 *
 * @example
 * ```html
 * <wr-bar-chart [data]="[
 *   { label: 'Mon', value: 12 },
 *   { label: 'Tue', value: 18, color: 'var(--wr-color-success)' },
 *   { label: 'Wed', value: 9 }
 * ]" />
 * ```
 *
 * @see https://ngwr.dev/components/bar-chart
 */
declare class WrBarChart {
    readonly data: _angular_core.InputSignal<readonly WrBarChartDatum[]>;
    /** Default bar colour when a datum has none. @default primary */
    readonly color: _angular_core.InputSignal<string>;
    /** Show value labels above each bar. @default true */
    readonly showValues: _angular_core.InputSignalWithTransform<boolean, any>;
    /** Pixel height of the chart area. @default 200 */
    readonly height: _angular_core.InputSignalWithTransform<number, unknown>;
    /** Explicit max value. `0` = auto. @default 0 */
    readonly max: _angular_core.InputSignalWithTransform<number, unknown>;
    protected readonly resolvedMax: _angular_core.Signal<number>;
    protected readonly bars: _angular_core.Signal<{
        label: string;
        value: number;
        color: string;
        heightPercent: number;
    }[]>;
    static ɵfac: _angular_core.ɵɵFactoryDeclaration<WrBarChart, never>;
    static ɵcmp: _angular_core.ɵɵComponentDeclaration<WrBarChart, "wr-bar-chart", never, { "data": { "alias": "data"; "required": false; "isSignal": true; }; "color": { "alias": "color"; "required": false; "isSignal": true; }; "showValues": { "alias": "showValues"; "required": false; "isSignal": true; }; "height": { "alias": "height"; "required": false; "isSignal": true; }; "max": { "alias": "max"; "required": false; "isSignal": true; }; }, {}, never, never, true, never>;
}

export { WrBarChart };
export type { WrBarChartDatum };