import { type NormalisedTextOrSegments, type ResolvedTextAlign } from 'ag-charts-core';
import type { AgAxisLabelFormatterParams, AgBaseAxisLabelStyleOptions, AgTimeIntervalUnit, DateFormatterStyle, FormatterParams, VerticalAlign } from 'ag-charts-types';
import type { ChartAxisLabelFlipFlag } from '../chartAxis';
export type FormatterCacheKey = `${DateFormatterStyle}:${'year' | 'month' | 'day' | 'none'}`;
export interface FormatterCache {
    type: string;
    mergedFormat: string | Record<string, string>;
    unit: AgTimeIntervalUnit | undefined;
    formatter: ((value: any, fractionDigits?: number) => string) | undefined;
}
export type AxisLabelFormatterCache = Record<FormatterCacheKey, FormatterCache | undefined>;
export declare function createAxisLabelFormatterCache(): AxisLabelFormatterCache;
export declare function getAxisLabelSideFlag(mirrored: boolean): ChartAxisLabelFlipFlag;
/**
 * Offsets of a tick label's near and far edges from its anchor, along the axis. `textAlign`
 * `undefined` means the axis's own computed alignment, which is measured centre-anchored and
 * without regard to rotation.
 */
export declare function getTickLabelEdgeOffsets(width: number, rotation: number, textAlign: ResolvedTextAlign | undefined): {
    leading: number;
    trailing: number;
};
/**
 * Offset from a tick's position - the middle of its band - to the band edge a configured alignment
 * anchors against. A scale with no bands puts the tick at no band edge, so the anchor stays put.
 *
 * The alignment is in canvas space, so `'right'` is the band's larger coordinate whichever way the
 * scale's range runs - hence the magnitude of a bandwidth a descending range gives a sign to.
 */
export declare function getBandEdgeOffset(bandwidth: number, textAlign: ResolvedTextAlign | undefined): number;
/**
 * Offset from a tick's position - the middle of its band - to the band edge a configured vertical
 * alignment anchors against. A scale with no bands puts the tick at no band edge, so the anchor
 * stays put.
 *
 * The alignment is in canvas space, so `'bottom'` is the band's larger coordinate whichever way the
 * scale's range runs - hence the magnitude of a bandwidth a descending range gives a sign to.
 */
export declare function getVerticalBandEdgeOffset(bandwidth: number, verticalAlign: VerticalAlign | undefined): number;
/**
 * Vertical shift that takes a text box measured under `from` to where `to` would place it. Both
 * alignments anchor the same glyphs, so the box only slides along its own height.
 */
export declare function getVerticalAlignShift(height: number, from: VerticalAlign, to: VerticalAlign): number;
export interface LabelExtent {
    x0: number;
    x1: number;
    y0: number;
    y1: number;
}
export interface LabelBox {
    x: number;
    y: number;
    width: number;
    height: number;
}
/**
 * Extent of a label's glyph box relative to its anchor, once the label's own rotation about that
 * anchor is applied. `box` must be the untransformed, anchor-positioned glyph box, so that the
 * node's own rotation is not folded in twice.
 */
export declare function getRotatedLabelExtent(box: LabelBox, anchorX: number, anchorY: number, rotation: number): LabelExtent;
/**
 * Horizontal shift that takes a text box measured under `from` to where `to` would place it. Both
 * alignments anchor the same glyphs, so the box only slides along its own width.
 */
export declare function getTextAlignShift(width: number, from: ResolvedTextAlign, to: ResolvedTextAlign): number;
export declare function formatAxisLabelValue(label: (Pick<AgBaseAxisLabelStyleOptions, never> & {
    formatter?: AgAxisLabelFormatterParams extends never ? never : (params: AgAxisLabelFormatterParams) => NormalisedTextOrSegments | undefined;
    format?: string | Record<string, string>;
}) | undefined, cache: AxisLabelFormatterCache, callWithContext: (formatter: (params: AgAxisLabelFormatterParams) => NormalisedTextOrSegments | undefined, params: AgAxisLabelFormatterParams) => NormalisedTextOrSegments | undefined, params: FormatterParams<any>, index: number, options?: {
    specifier?: string | Record<string, string>;
    dateStyle: DateFormatterStyle | undefined;
    truncateDate: 'year' | 'month' | 'day' | undefined;
    depth?: number;
}): NormalisedTextOrSegments | undefined;