import { type LineStyleType, type PPTElementOutline, type PPTShapeElement } from '../types/slides';
/** Clamp a resolved pixel corner radius to half the shorter box side. */
export declare const clampOutlineRadius: (radius: number, width: number, height: number) => number;
/** Pixel radius for paint/CSS. `radius` is 0–1 of max rounding, or legacy px when `> 1`. */
export declare const resolveOutlineRadiusPx: (radius: number | undefined, width: number, height: number) => number;
/** Slider / label percent (0–100) for an authored outline radius. */
export declare const outlineRadiusToPercent: (radius: number | undefined, width: number, height: number) => number;
export declare const percentToOutlineRadius: (percent: number) => number;
export declare const outlineRadiusCss: (radius: number | undefined, width: number, height: number) => string | undefined;
/**
 * Rounded rect in local units. `rx`/`ry` are elliptical radii of that space
 * (circular after a matching non-uniform scale). Skips zero-length edges so
 * 100% rounding is a pill/circle instead of collapsed quadratic chamfers.
 */
export declare const roundedRectEllipsePath: (width: number, height: number, rx: number, ry: number) => string;
/** Circular-corner rounded rect in pixel space. 100% radius → pill / circle. */
export declare const roundedRectArcPath: (width: number, height: number, radiusPx: number) => string;
/** SVG path for a rectangular outline (optionally rounded). */
export declare const roundedRectOutlinePath: (width: number, height: number, radius?: number) => string;
/** Rectangles and rectangle-family formulas the border-radius slider can round. */
export declare const isRoundableRectShape: (el: Pick<PPTShapeElement, 'path' | 'viewBox' | 'pathFormula'>) => boolean;
/**
 * Path the editor / painter / hit-test should use. Outline radius is a 0–1
 * fraction of max rounding; viewBox scale keeps the corners circular.
 */
export declare const resolveShapePaintPath: (el: PPTShapeElement) => string;
/** Keep ROUND_RECT keypoints / path in sync when the radius slider moves. */
export declare const shapePropsForOutlineRadius: (el: PPTShapeElement, radius: number) => Partial<PPTShapeElement>;
export declare const outlineElementPatch: (el: {
    type: string;
}, outline: PPTElementOutline, radiusChanged?: boolean) => {
    outline: PPTElementOutline;
} & Partial<PPTShapeElement>;
/**
 * pptxgenjs-plus `rectRadius` (ECMA-376 `a:gd name="adj"` / 50000).
 * 0 = sharp corners, 1 = maximum rounding, 0.2 = 20%.
 */
export declare const outlineRadiusToPptxRectRadius: (radius: number, width: number, height: number) => number;
/** pptxtojson emits border colors as a structured solid/gradient object. */
export type PptxBorderColor = string | {
    type: 'color';
    value: string;
} | {
    type: 'gradient';
    value: {
        colors: {
            color: string;
            pos: string;
        }[];
        path: string;
        rot: number;
    };
};
/**
 * Flatten a pptxtojson border color to the single CSS color Fika outlines
 * and lines support. Gradient strokes fall back to their first stop.
 */
export declare const pptxBorderColorToString: (borderColor?: PptxBorderColor) => string | undefined;
interface PptxOutlineSource {
    borderColor?: PptxBorderColor;
    borderWidth?: number;
    borderType?: LineStyleType;
    shapType?: string;
    keypoints?: Record<string, number>;
    width: number;
    height: number;
}
export declare const importOutlineFromPptx: (el: PptxOutlineSource, ratio: number, options?: {
    includeCornerRadius?: boolean;
}) => PPTElementOutline;
export {};