import type { BitmapResolution, Dimension, FloatShrinkConfig, FloatShrinkMode, LayoutConfig, LayoutType, ResolvedLayoutConfig, ResolvedTextWrapConfig, TextWrapConfig } from '../types.js';
export declare const DEFAULT_COLUMN_RULE: {
    enabled: boolean;
    color: {
        readonly hex: "#cccccc";
        readonly model: "hex";
    };
    lineWidth: {
        readonly value: 0.5;
        readonly unit: "pt";
    };
};
/** The smallest scale `placement.shrink` sets a picture at, when nothing
 *  says otherwise (#626). */
export declare const DEFAULT_FLOAT_MIN_SCALE = 0.7;
/** A `floatShrink.mode` / `placement.shrink` as written: one of the three
 *  words, else `undefined`. */
export declare function floatShrinkModeOf(value: unknown): FloatShrinkMode | undefined;
/** A `minScale` as written: a number in (0, 1], else `undefined`. */
export declare function floatMinScaleOf(value: unknown): number | undefined;
/** `layout.floatShrink` resolved: a mode and a smallest scale. */
export declare function resolveFloatShrink(partial?: FloatShrinkConfig): {
    mode: FloatShrinkMode;
    minScale: number;
};
/** `layout.wrap` defaults (#627): no gap of its own (one body line), text
 *  no narrower than 12 em, two lines beside, 45 % of the column. */
export declare const DEFAULT_TEXT_WRAP: ResolvedTextWrapConfig;
/** A `minTextWidth` as written: a length, or a share of the column in
 *  (0, 1]; else `undefined`. */
export declare function wrapMinTextWidthOf(value: unknown): Dimension | number | undefined;
/** A `minLinesBeside` as written: a whole number, at least 1. */
export declare function wrapMinLinesOf(value: unknown): number | undefined;
/** A `defaultWidth` (or `placement.width`) as a wrap reads it: a share in
 *  (0, 1). */
export declare function wrapWidthOf(value: unknown): number | undefined;
/** `layout.wrap` resolved; misspelt values fall back to the defaults. */
export declare function resolveTextWrap(partial?: TextWrapConfig): ResolvedTextWrapConfig;
/** A `bitmapResolution` as written (#631): `'document'`, `'file'` or a
 *  positive ppi; else `undefined`. */
export declare function bitmapResolutionOf(value: unknown): BitmapResolution | undefined;
/** The share of a column a float heading the page that cites it may take
 *  (`layout.maxTopFraction`, #633). */
export declare const DEFAULT_MAX_TOP_FRACTION = 0.7;
/** A `maxTopFraction` as written: a number in (0, 1], else `undefined`. */
export declare function maxTopFractionOf(value: unknown): number | undefined;
export declare const DEFAULT_LAYOUT_CONFIG: ResolvedLayoutConfig;
export declare function resolveLayoutConfig(partial?: LayoutConfig): ResolvedLayoutConfig;
export declare function stripLayoutDefaults(layout?: LayoutConfig): LayoutConfig | undefined;
/** The fewest and most columns of a `multiple` layout. */
export declare const MULTIPLE_COLUMNS_MIN = 3;
export declare const MULTIPLE_COLUMNS_MAX = 8;
/** The column count a `multiple` layout cuts its columns with: `value`
 *  rounded to a whole number and clamped to 3 … 8; a value that is not a
 *  number takes the default (3). `collectConfigWarnings` reports each value
 *  this changes. */
export declare function columnCountUsed(value: number): number;
/** How many body columns a layout cuts a page into (the side column of a
 *  `oneAndHalf` layout counts). */
export declare function layoutColumnCount(layout: {
    layoutType: LayoutType;
    columnCount: number;
}): number;
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