Vue3实现一个可左右滑动操作组件的示例代码

<script setup>
import { ref } from "vue";

const props = defineProps({
  leftDisabled: {
    type: Boolean,
    default: false
  },
  rightDisabled: {
    type: Boolean,
    default: false
  }
});

const emit = defineEmits(["change"]);

// 纵向滑动时禁止水平滑动，水平滑动时禁止纵向滑动；
// 水平滑动结束超过屏幕二分之一时则toggle；
// 最大可滑动不超过屏幕的三分之二；
const startX = ref(0);
const startY = ref(0);
const endX = ref(0);
const endY = ref(0);
const dValueX = ref(0);
const dValueY = ref(0);
const translateX = ref(0);
const horizontalMoved = ref(false);
const verticalMoved = ref(false);

const onTouchStart = (e) => {
  startX.value = e.targetTouches[0].pageX;
  startY.value = e.targetTouches[0].pageY;
};

const onTouchMove = (e) => {
  endX.value = e.targetTouches[0].pageX;
  endY.value = e.targetTouches[0].pageY;
  dValueX.value = Math.abs(startX.value - endX.value);
  dValueY.value = Math.abs(startY.value - endY.value);
  const stopRange = window.screen.width - window.screen.width / 3;
  // 水平滑动长度大于纵向滑动长度，选择水平滑动
  if (dValueX.value > dValueY.value) {
    if (verticalMoved.value) {
      e.preventDefault();
      return;
    } else horizontalMoved.value = true;

    if (dValueX.value < stopRange) {
      if (startX.value > endX.value) {
        if (!props.leftDisabled) translateX.value = dValueX.value * -1; // 向左划
      } else {
        if (!props.rightDisabled) translateX.value = dValueX.value;
      }
    }

    e.preventDefault();
  } else {
    if (horizontalMoved.value) e.preventDefault();
    else verticalMoved.value = true;
  }
};

const onTouchEnd = (e) => {
  const range = window.screen.width / 2;
  if (horizontalMoved.value) {
    if (dValueX.value > range) {
      if (startX.value > endX.value) {
        // console.log("向左划");
        if (!props.leftDisabled) handleChange("left");
      } else if (startX.value < endX.value) {
        // console.log("向右划");
        if (!props.rightDisabled) handleChange("right");
      }
    }
  }
  horizontalMoved.value = false;
  verticalMoved.value = false;
  translateX.value = 0;
  startX.value = endX.value = 0;
  startY.value = endY.value = 0;
};

const handleChange = (value) => emit("change", value);
</script>

<template>
  <div
    :style="`transition-duration: 200ms; transform: translateX(${translateX}px)`"
  >
    <slot
      :touchstart="onTouchStart"
      :touchmove="onTouchMove"
      :touchend="onTouchEnd"
    ></slot>
  </div>
</template>

<swipe-container @change="onToggleChange">
  <template #default="{ touchstart, touchmove, touchend }">
    <div
      class="list"
      @touchstart="touchstart"
      @touchmove="touchmove"
      @touchend="touchend"
    >
      <div
        v-for="item in list"
        class="card"
      ></div>
    </div>
  </template>
</swipe-container>