tdesign-mobile-vue/lib/_util/useTouch.js

tdesign-mobile-vue

/**
 * tdesign v1.7.0
 * (c) 2024 TDesign Group
 * @license MIT
 */

import { ref } from 'vue';

var MIN_DISTANCE = 10;
function getDirection(x, y) {
  if (x > y && x > MIN_DISTANCE) {
    return "horizontal";
  }
  if (y > x && y > MIN_DISTANCE) {
    return "vertical";
  }
  return "";
}
function useTouch() {
  var startX = ref(0);
  var startY = ref(0);
  var deltaX = ref(0);
  var deltaY = ref(0);
  var offsetX = ref(0);
  var offsetY = ref(0);
  var direction = ref("");
  var isVertical = function isVertical() {
    return direction.value === "vertical";
  };
  var isHorizontal = function isHorizontal() {
    return direction.value === "horizontal";
  };
  var reset = function reset() {
    deltaX.value = 0;
    deltaY.value = 0;
    offsetX.value = 0;
    offsetY.value = 0;
    direction.value = "";
  };
  var start = function start(event) {
    reset();
    startX.value = event.touches[0].clientX;
    startY.value = event.touches[0].clientY;
  };
  var move = function move(event) {
    var touch = event.touches[0];
    deltaX.value = touch.clientX < 0 ? 0 : touch.clientX - startX.value;
    deltaY.value = touch.clientY - startY.value;
    offsetX.value = Math.abs(deltaX.value);
    offsetY.value = Math.abs(deltaY.value);
    if (!direction.value) {
      direction.value = getDirection(offsetX.value, offsetY.value);
    }
  };
  return {
    move: move,
    start: start,
    reset: reset,
    startX: startX,
    startY: startY,
    deltaX: deltaX,
    deltaY: deltaY,
    offsetX: offsetX,
    offsetY: offsetY,
    direction: direction,
    isVertical: isVertical,
    isHorizontal: isHorizontal
  };
}

export { useTouch };
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