封装一个滑块控制灯光组件

效果如下gif

只进行了基础的事件和布局，可优化的地方：luminance-box这个div加上后，由于和slider-run-way都是absolute定位，导致slider-run-way的点击事件无法设置值，只能通过滑块设置。暂时想不到咋处理，有想法可以讨论一下

html布局

<div class="light-slider">
    <div
      class="slider-run-way"
      @click.stop="handleClickRunway($event)"
      ref="runwayRef"
    >
      <div class="active-bar" :style="{ width: activeWidth + '%' }">div>
      <div
        class="control-wrapper"
        :style="{ left: activeWidth + '%' }"
        @mousedown="handleMousedown($event)"
      >
        <div class="control-btn"><span>span><span>span>div>
      div>
    div>
    <div class="luminance-box" @click="handleRight">
      <img src="../../../../assets/home/homepage_control_bright.png" />
      <div class="right-box">
        <span class="num">{{ activeWidth }}%span>
        <span class="l-title">luminancespan>
      div>
    div>
  div>

js部分

export default {
  name: "lightingControl",
  props: {
    isDisabled: {
      type: Boolean,
      default: true,
    },
  },
  data() {
    return {
      activeWidth: 13,
      runWayWidth: 0, // 滑道总宽度
      startX: 0,
      dragging: false,
      isClick: true,
      startPosition: 0,
    };
  },
  mounted() {
    this.$nextTick(() => {
      this.runWayWidth = this.$refs.runwayRef.clientWidth;
    });
  },
  methods: {
    handleClickRunway(e) {
      if (!this.isClick || this.isDisabled) return;
      console.log(e);
      const { runWayWidth } = this;
      const { offsetX } = e;
      const percent = parseInt((offsetX / runWayWidth) * 100);
      this.activeWidth = percent;
    },
    handleRight(e) {
      return false;
    },
    handleMousedown(e) {
      if (this.isDisabled) return;
      e.preventDefault();
      this.startX = e.clientX;
      this.onDragStart(e);
      window.addEventListener("mousemove", this.onDragging);
      window.addEventListener("mouseup", this.onDragEnd);
    },
    onDragStart(e) {
      this.dragging = true;
      this.isClick = true;
      this.startPosition = parseFloat(this.activeWidth);
    },
    onDragging(e) {
      e.stopPropagation();
      if (this.dragging) {
        this.isClick = false;
        let currentX = e.clientX;
        let diff = ((currentX - this.startX) / this.runWayWidth) * 100;
        this.newPosition = this.startPosition + diff;
        this.setPosition(this.newPosition);
      }
    },
    onDragEnd() {
      if (this.dragging) {
        setTimeout(() => {
          this.dragging = false;
          if (!this.isClick) {
            this.setPosition(this.newPosition);
            this.isClick = true;
          }
        }, 0);
        window.removeEventListener("mousemove", this.onDragging);
        window.removeEventListener("mouseup", this.onDragEnd);
      }
    },
    setPosition(newPosition) {
      if (newPosition < 0) {
        newPosition = 0;
      } else if (newPosition > 100) {
        newPosition = 100;
      }
      this.activeWidth = Math.round(newPosition);
    },
  },
};

css

 
.light-slider {
  margin-top: 16px;
  position: relative;
  .slider-run-way {
    width: 100%;
    position: relative;
    cursor: pointer;
    height: 70px;
    background: #d7eeff;
    border-radius: 4px 4px 4px 4px;
 
    .active-bar {
      height: 100%;
 
      position: absolute;
      left: 0;
      border-top-left-radius: 4px;
      border-bottom-left-radius: 4px;
      background: #36c1fd;
    }
    .control-wrapper {
      display: flex;
      align-items: center;
      justify-content: center;
      height: 30px;
      width: 22px;
      position: absolute;
      user-select: none;
      z-index: 1001;
      top: 20px;
      transform: translateX(-50%);
      background-color: transparent;
      .control-btn {
        width: 16px;
        height: 24px;
        background: #fff;
        box-shadow: 0px 0px 5px 0px rgba(76, 115, 184, 0.5);
        border-radius: 2px 2px 2px 2px;
        color: #36c1fd;
        display: flex;
        align-items: center;
        justify-content: space-evenly;
        span {
          width: 2px;
          height: 6px;
          background: #36c1fd;
          border-radius: 30px 30px 30px 30px;
        }
      }
    }
  }
  .luminance-box {
    display: flex;
    width: 100%;
    height: 70px;
    justify-content: space-between;
    align-items: center;
    position: absolute;
    left: 0;
    top: 0;
 
    img {
      width: 20px;
      height: 20px;
      margin-left: 14px;
    }
    .l-title {
      font-size: 14px;
    }
    .right-box {
      color: #2e2e48;
      display: flex;
      flex-direction: column;
      align-items: center;
      font-weight: bolder;
      margin-right: 10px;
      .num {
        font-size: 24px;
      }
    }
  }
}