更新兼容PC 滑塊組件開箱即用 slider 可以設置最大值最小值

<template>
  <div class="slider_all">
    <div
      class="number"
    >{{ showNumber+this.$store.state.surveyAnswer.surveyAnswerobj[this.parentIndex].weight.minNumber }}</div>
    <div class="content">
      <div class="describe" style="width:270px;">
        <div class="left">最小比值（{{minNumber}}）</div>
        <div class="right">最大比值（{{maxNumber}}）</div>
      </div>
      <!-- 滑動條 -->
      <div
        class="slider"
        id="slider"
        style="width:270px;"
        @mousedown="mouseDown"
        @mousemove="mouseMove"
        @mouseup="mouseLeave"
        @touchstart="touchStart"
        @touchmove="touchMove"
        @touchend="touchEnd"
      >
        <div class="process" :style="{width:process+'px'}"></div>
        <div class="item" :style="{left:process-10+'px'}">
          <span class="center"></span>
        </div>
      </div>
      <!-- 標記 -->
      <!-- <div class="lable">
        <div class="lable_item">
          <span class="line"></span>
          0
        </div>
        <div class="lable_item">
          <span class="line"></span>
          20
        </div>
        <div class="lable_item">
          <span class="line"></span>
          40
        </div>
        <div class="lable_item">
          <span class="line"></span>
          60
        </div>
        <div class="lable_item">
          <span class="line"></span>
          80
        </div>
        <div class="lable_item">
          <span class="line"></span>
          100
        </div>
      </div>-->
    </div>
  </div>
</template>

<script>
export default {
  props: ["parentIndex", "childIndex"],
  data() {
    return {
      //當前進度數
      process: 0,
      //實際顯示number
      showNumber: 0,
      //鼠標是否點擊
      mouseIsClick: false,
      //初始pageX位置
      pageX: 0,
      //最小比重值
      minNumber: this.$store.state.surveyAnswer.surveyAnswerobj[
        this.parentIndex
      ].weight.minNumber
        ? this.$store.state.surveyAnswer.surveyAnswerobj[this.parentIndex]
            .weight.minNumber
        : 0,
      //最大比重
      maxNumber: this.$store.state.surveyAnswer.surveyAnswerobj[
        this.parentIndex
      ].weight.maxNumber
        ? this.$store.state.surveyAnswer.surveyAnswerobj[this.parentIndex]
            .weight.maxNumber
        : 100,
      //倍數比例
      proportion:
        100 /
        (this.$store.state.surveyAnswer.surveyAnswerobj[this.parentIndex].weight
          .maxNumber -
          this.$store.state.surveyAnswer.surveyAnswerobj[this.parentIndex]
            .weight.minNumber)
    };
  },
  computed: {
    //得到權重參數
    getItem() {
      return this.$store.state.surveyAnswer.surveyAnswerobj[this.parentIndex];
    },
    getProp() {
      return 100 / (this.maxNumber - this.minNumber);
    }
  },
  watch: {
    process(val) {
      val = val / this.getProp;
      this.showNumber =
        Math.floor(val * 0.4) >= this.maxNumber - this.minNumber
          ? this.maxNumber - this.minNumber
          : Math.floor(val * 0.4);
      this.$store.commit("surveyAnswer/changeWeight", {
        parentIndex: this.parentIndex,
        childIndex: this.childIndex,
        val: this.showNumber
      });
    }
  },
  methods: {
    //觸摸開始
    touchStart(e) {
      console.log("滑動開始");
      let tempVal = e.touches[0].pageX - 70;

      if (tempVal >= 0 && tempVal <= 270) {
        this.process = tempVal;
      }
    },
    //滑動過程
    touchMove(e) {
      let tempVal = e.changedTouches[0].pageX - 70;
      if (tempVal >= 0 && tempVal <= 270) {
        console.log(tempVal);
        this.process = tempVal;
      }
    },
    //滑動結束
    touchEnd(e) {
      console.log("滑動結束");
      let tempVal = e.changedTouches[0].pageX - 70;
      if (tempVal >= 0 && tempVal <= 270) {
        console.log(tempVal);
        this.process = tempVal;
      }
    },
    //鼠標結束事件
    mouseLeave(e) {
      console.log("鼠標結束");
      this.mouseIsClick = false;
    },
    //PC端模擬事件
    mouseDown(e) {
      if (!this.mouseIsClick) {
        this.mouseIsClick = true;
        let tempVal = e.offsetX;
        this.pageX = e.pageX-e.offsetX;
        if (tempVal >= 0 && tempVal <= 270) {
          this.process = tempVal;
        }
      }
    },
    //鼠標移動
    mouseMove(e) {
      if (this.mouseIsClick) {
        let tempVal = e.pageX - this.pageX;
        if (tempVal >= 0 && tempVal <= 270) {
          this.process = tempVal;
        }
      }
    }
  }
};
</script>

<style lang="less" scoped>
.slider_all {
  width: 667px;
  display: flex;
  flex-direction: row;
  .number {
    width: 100px;
    height: 110px;
    text-align: center;
    line-height: 110px;
    font-size: 40px;
    font-family: PingFang SC;
    font-weight: bold;
    color: rgba(192, 65, 61, 1);
  }
  .content {
    width: 526px;
    .describe {
      width: 100%;
      display: flex;
      flex-direction: row;
      font-size: 20px;
      font-family: PingFang SC;
      font-weight: 400;
      margin-bottom: 15px;
      color: rgba(51, 51, 51, 1);
      .left {
      }
      .right {
        flex: 1;
        text-align: right;
      }
    }
    // 滑塊樣式
    .slider {
      height: 25px;
      background: rgba(89, 101, 199, 0.1);
      border-radius: 12px;
      position: relative;
      .process {
        height: 25px;
        width: 50px;
        border-radius: 12px;
        background: rgba(89, 101, 199, 1);
        position: absolute;
        left: 0;
        top: 0;
      }
      .item {
        width: 45px;
        height: 45px;
        background: rgba(89, 101, 199, 1);
        box-shadow: 0px 4px 20px 4px rgba(50, 33, 112, 0.2);
        border-radius: 50%;
        position: absolute;
        top: -10px;
        left: 35px;
        .center {
          width: 21px;
          height: 21px;
          background: rgba(255, 255, 255, 0.85);
          box-shadow: 0px 4px 20px 4px rgba(50, 33, 112, 0.2);
          border-radius: 50%;
          position: absolute;
          top: 0;
          left: 0;
          bottom: 0;
          right: 0;
          margin: auto;
        }
      }
    }

    // 標籤
    .lable {
      width: 100%;
      margin-top: 10px;
      display: flex;
      flex-direction: row;
      .lable_item {
        margin-right: 74px;
        display: flex;
        flex-direction: column;
        align-items: center;
        font-size: 20px;
        font-family: PingFang SC;
        font-weight: 400;
        color: rgba(51, 51, 51, 0.5);
        .line {
          width: 1px;
          height: 27px;
          border: 1px solid rgba(51, 51, 51, 0.2);
          margin-bottom: 10px;
        }
      }
      .lable_item:last-child {
        margin-right: 0;
      }
    }
  }
}
</style>