/**
 * Shared pointer-input primitives used across every drag/resize/select/scroll
 * interaction in the grid.
 *
 * The grid is built on **Pointer Events** rather than legacy mouse events so a
 * single code path serves mouse, touch, and pen. Because `PointerEvent extends
 * MouseEvent`, every existing `button` / `buttons` / `clientX` / modifier-key
 * check keeps working unchanged — the only additions are the `pointerType`
 * branch (to give touch a different gesture where needed) and the shared
 * thresholds below.
 *
 * Centralizing these constants here keeps gesture behavior consistent (a "drag"
 * starts at the same distance everywhere) and avoids each interaction site
 * re-deriving the same magic numbers.
 */
/** Pointer type reported by the browser for a {@link PointerEvent}. */
export declare const enum PointerKind {
    Mouse = "mouse",
    Touch = "touch",
    Pen = "pen"
}
/** `true` when the event originates from a touch contact (finger). */
export declare function isTouchPointer(e: PointerEvent): boolean;
/** `true` when the event originates from a mouse or trackpad. */
export declare function isMousePointer(e: PointerEvent): boolean;
/**
 * Movement (px) a pointer must travel before a press is treated as a drag.
 *
 * Touch gets a larger threshold than mouse because fingers jitter on contact
 * and the extra slack prevents a stationary tap from being misread as a drag.
 */
export declare const DRAG_THRESHOLD_MOUSE = 5;
export declare const DRAG_THRESHOLD_TOUCH = 8;
/** Returns the drag-start threshold appropriate for the pointer's type. */
export declare function dragThresholdFor(e: PointerEvent): number;
/**
 * Press duration (ms) after which a stationary touch is promoted to a drag
 * "pick up" — used to disambiguate a horizontal header drag (which should
 * scroll) from a column reorder (which requires intent). Mouse never waits;
 * it starts dragging as soon as it crosses {@link DRAG_THRESHOLD_MOUSE}.
 */
export declare const LONG_PRESS_MS = 400;
/**
 * Momentum (kinetic) scrolling tuning for touch panning.
 *
 * After the finger lifts, residual velocity is fed to the scroller each frame
 * and multiplied by {@link MOMENTUM_DECAY}; the glide ends once speed drops
 * below {@link MOMENTUM_MIN_VELOCITY} (px/ms).
 */
export declare const MOMENTUM_DECAY = 0.95;
export declare const MOMENTUM_MIN_VELOCITY = 0.02;
/**
 * CSS selector matching every element that owns its own pointer gesture and
 * must therefore be excluded from body/header touch-panning (so a press on a
 * resize handle, drag handle, fill handle, open editor, or floating AI panel
 * starts that interaction instead of scrolling the grid underneath it).
 */
export declare const PAN_EXCLUDE_SELECTOR = ".pg-th__resize-handle,[data-row-drag],.pg-fill-handle,.pg-ai-panel,.pg-editor,[data-detail-toggle],[data-detail-resize-handle]";
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