import { TableBorderValue } from './index.js';
/**
 * Composition of a compound (multi-rule) border band.
 *
 * `segments` alternate rule, gap, rule, ... starting at the band's OUTER face
 * (table boundary / neighbor-facing side) and ending at the inner face (cell
 * content side). 3 segments = 2 rules, 5 segments = 3 rules. `band` is the sum.
 */
export type BorderBandProfile = {
    segments: number[];
    band: number;
};
/**
 * Band composition for a compound border style, or null for single-rule styles
 * (callers keep their existing single-rule path). Rules and gaps are clamped to
 * >= 1px so hairline components stay visible, matching Word's measured minimums.
 */
export declare function getBorderBandProfile(value: TableBorderValue | null | undefined): BorderBandProfile | null;
/**
 * Rendered border band width in pixels for a table or cell border value.
 *
 * This is the SINGLE source of truth for how wide a border paints, shared by the
 * DOM painter (CSS border width) and the measuring engine (row-height reservation)
 * so geometry and paint never disagree.
 *
 * Width semantics per ECMA-376 / Word rendering:
 * - `none`/nil (or explicit `{none:true}`) paint nothing: band 0.
 * - `thick` paints a single rule at the authored width (NOT doubled). Word renders
 *   ST_Border `thick` at the w:sz width, same weight as `single` for a given sz
 *   (150dpi Word probe of st-thick sz=12 = 3px@150 ≈ 1.5pt = authored). A 1px floor
 *   keeps a hairline visible. (SD-3028: prior 2x multiplier painted ~2x Word.)
 * - Compound styles (double, triple, thinThick*) paint a multi-rule band whose
 *   total width is the sum of the measured profile segments; see
 *   `getBorderBandProfile`. For `double` this preserves the original semantics:
 *   w:sz is the width of EACH rule, band = 3x the authored width, floored at 3px
 *   so both rules always render. (SD-3308)
 * - Every other style paints at the authored width.
 *
 * @param value - Border value from table attrs (`TableBorderValue`) or a cell-side
 *   `BorderSpec` (the `{none:true}` marker form is also accepted).
 * @returns Band width in pixels (always >= 0).
 */
export declare function getBorderBandWidthPx(value: TableBorderValue | null | undefined): number;
/**
 * True when a band border renders correctly via the native CSS `border-style: double`
 * (two equal rules + gap) and must NOT be routed through the multi-rule nested-rectangle
 * overlay. `double` is the only ECMA-376 multi-rule style CSS expresses exactly (triple = 3
 * rules, thinThick* = unequal rules — CSS cannot, so those keep the overlay). Routing `double`
 * through the overlay forces its native CSS border transparent and repaints a single inner
 * rule, collapsing the double to one line. (SD-3028)
 *
 * @param style - A border style name (or undefined).
 * @returns true only for the `double` style.
 */
export declare function isNativeCssDoubleStyle(style: string | undefined): boolean;
//# sourceMappingURL=border-band.d.ts.map