import { type SharedValue } from "react-native-reanimated";
import type { SkFont } from "@shopify/react-native-skia";
import type { ChartEngineLayout } from "../core/useLiveChartEngine";
import { type YAxisEntry } from "../draw/grid";
import type { ChartPadding } from "../draw/line";
import type { ReferenceLine } from "../types";
/** Screen-space geometry for one reference line / band, recomputed each frame. */
export interface ReferenceLineLayout {
    visible: boolean;
    /** Line y, or band top-edge y. */
    y: number;
    /** Band bottom-edge y (value/time band); equals `y` for a plain line. */
    yBottom: number;
    /** Left x extent of the plot (badge / label / connector anchor). */
    x1: number;
    /** Right x extent of the plot (badge / label / connector anchor). */
    x2: number;
    /**
     * Left x of the **drawn** line / band. Equals {@link x1} normally, or `0`
     * (canvas edge) when the line is full-width. Decoupled from {@link x1} so the
     * line can run through the gutter while the badge/label stays in the plot.
     */
    lineX1: number;
    /** Right x of the drawn line / band: {@link x2} normally, or the canvas width when full-width. */
    lineX2: number;
    /** Stroke the plain horizontal line (true for a plain Form-A line, or a full-width badged line). */
    drawLine: boolean;
    /** Resolved label text (with appended value when `showValue`); "" when hidden. */
    label: string;
    labelX: number;
    labelY: number;
    /** True when a Form-A value is off-screen (badge pinned to the edge + chevron). */
    offAxis: boolean;
    /** Off-axis chevron points up (target above range) vs down (below). */
    chevronUp: boolean;
    /** True when the value renders as a pill badge (icon / text / chevron tag). */
    badge: boolean;
    /** Badge pill rect left x. */
    pillX: number;
    /** Badge pill rect width. */
    pillW: number;
    /** Badge icon glyph x (-1 when no icon). */
    iconX: number;
    /** Badge icon glyph (""/none). */
    icon: string;
    /** Off-axis chevron center x (-1 when no chevron). */
    chevronCx: number;
    /** Connector dashed-line start x (-1 when no connector). */
    connStart: number;
    /** Connector dashed-line end x. */
    connEnd: number;
}
/** Axis-aligned screen rect of a reference-line badge pill (the press hit-target). */
export interface ReferenceBadgeRect {
    x: number;
    y: number;
    w: number;
    h: number;
}
/**
 * Screen-space pill rect for a Form-A reference line's **badge**, or `null` when
 * the line has no pressable badge (no `badge`/`offAxisBadge`, not a value line, a
 * legacy off-axis badge while in range, or the canvas isn't laid out / range is
 * degenerate). Shares `badgeGeometry` + the edge classification with
 * {@link useReferenceLine}, so the hit-target tracks the rendered pill exactly.
 * Pure worklet — used by {@link useReferenceLinePress} for tap hit-testing.
 */
export declare function computeReferenceBadgeRect(line: ReferenceLine, canvasWidth: number, canvasHeight: number, padding: ChartPadding, dMin: number, dMax: number, font: SkFont, formatValue: (value: number) => string, 
/** Live value override (e.g. a dragged value), defaulting to `line.value`. */
valueOverride?: number): ReferenceBadgeRect | null;
/**
 * Derives screen-space layout for a single reference line or band. Supports all
 * three scalar/band `ReferenceLine` forms (horizontal line, horizontal value
 * band, vertical time band) plus the pill badge for a Form-A value (in-range tag
 * + off-screen chevron pin). The series form is handled by
 * `ReferenceLineSeriesOverlay`.
 */
export declare function useReferenceLine(engine: ChartEngineLayout, padding: ChartPadding, line: ReferenceLine | undefined, formatValue: (v: number) => string, font: SkFont, 
/**
 * Per-line live value overrides (e.g. dragged values), index-aligned with the
 * chart's `referenceLines`. When provided and the slot at {@link index} holds a
 * number, the Form-A line tracks that value instead of the static `line.value`,
 * so a drag updates the rendered line/badge on the UI thread. Omit for static lines.
 */
dragValues?: SharedValue<number[]>, index?: number, 
/** Y-axis labels used to match the right-anchored grid endpoint. */
yAxisEntries?: SharedValue<YAxisEntry[]>, 
/** Enables clipping when set; matches {@link YAxisConfig.labelRightMargin}. */
labelRightMargin?: number, 
/** Gap before the label column; matches {@link YAxisConfig.gridEndGap}. */
gridEndGap?: number, 
/** Font used by the Y-axis labels; badge font overrides must not move the line. */
yAxisFont?: SkFont): SharedValue<ReferenceLineLayout>;
//# sourceMappingURL=useReferenceLine.d.ts.map