domEventSequences.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.
 *
 * @emails react-core
 */

'use strict';

import {
  buttonType,
  buttonsType,
  defaultPointerId,
  defaultPointerSize,
  defaultBrowserChromeSize,
} from './constants';
import * as domEvents from './domEvents';
import {hasPointerEvent, platform} from './domEnvironment';
import * as touchStore from './touchStore';

/**
 * Converts a PointerEvent payload to a Touch
 */
function createTouch(target, payload) {
  const {
    height = defaultPointerSize,
    pageX,
    pageY,
    pointerId,
    pressure = 1,
    twist = 0,
    width = defaultPointerSize,
    x = 0,
    y = 0,
  } = payload;

  return {
    clientX: x,
    clientY: y,
    force: pressure,
    identifier: pointerId,
    pageX: pageX || x,
    pageY: pageY || y,
    radiusX: width / 2,
    radiusY: height / 2,
    rotationAngle: twist,
    target,
    screenX: x,
    screenY: y + defaultBrowserChromeSize,
  };
}

/**
 * Converts a PointerEvent to a TouchEvent
 */
function createTouchEventPayload(target, touch, payload) {
  const {
    altKey = false,
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