geometry.js — react Source File

Source Code

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow
 */

export type Point = $ReadOnly<{x: number, y: number}>;
export type Size = $ReadOnly<{width: number, height: number}>;
export type IntrinsicSize = {
  ...Size,

  // If content is this height or less, hide the scrollbar entirely,
  // so that it doesn't take up vertical space unnecessarily (e.g. for a single row of content).
  hideScrollBarIfLessThanHeight?: number,

  // The initial height should be the height of the content, or this, whichever is less.
  maxInitialHeight?: number,
};
export type Rect = $ReadOnly<{origin: Point, size: Size}>;

/**
 * Alternative representation of `Rect`.
 * A tuple of (`top`, `right`, `bottom`, `left`) coordinates.
 */
type Box = [number, number, number, number];

export const zeroPoint: Point = Object.freeze({x: 0, y: 0});
export const zeroSize: Size = Object.freeze({width: 0, height: 0});
export const zeroRect: Rect = Object.freeze({
  origin: zeroPoint,
  size: zeroSize,
});

export function pointEqualToPoint(point1: Point, point2: Point): boolean {
  return point1.x === point2.x && point1.y === point2.y;
}

export function sizeEqualToSize(size1: Size, size2: Size): boolean {
  return size1.width === size2.width && size1.height === size2.height;
}

export function rectEqualToRect(rect1: Rect, rect2: Rect): boolean {
  return (
    pointEqualToPoint(rect1.origin, rect2.origin) &&
    sizeEqualToSize(rect1.size, rect2.size)
  );
}

export function sizeIsValid({width, height}: Size): boolean {
  return width >= 0 && height >= 0;
}

export function sizeIsEmpty({width, height}: Size): boolean {
  return width <= 0 || height <= 0;
}

function rectToBox(rect: Rect): Box {
// ... (88 more lines)