vue模块移动组件

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一直都想实现类似于五百丁中简历填写中模块跟随鼠标移动的组件,最近闲来无事,自己琢磨实现了一个差不多的组件。


其中每个模块都是组件调入(项目经验、教育经验、工作经验等),所以这里也用到了动态加载组件方式。

思路:鼠标移入模块,显示相应模块的点击移动按钮,点击A模块移动按钮,此时原先A模块所在的位置上变为拖动到这里绿框模块,同时鼠标下悬浮着A模块,鼠标移动,悬浮的A模块跟随移动,绿框也跟随上下移动。

父组件

1、父组件template中的代码

<div class="component-box" ref="compBox">
  <component
      v-for="(item, index) in comRoute"
      :is="item"
      :key="index"
      @getData="getData">
</component>
  <div :class="['translate-box', {'move-icon':transType}]"
       ref="translateBox" v-if="transType">
    <component :is="transCom"></component>
  </div>
</div>

2、data中定义的属性

comList: ['educationExp', 'workExp', 'projectExp'], // 模块列表
comLen: 0, // 模块的长度
comType: '', // 当前移动的模块
transType: '', // 当前移动的模块
coordinate: { // 鼠标坐标
  mouseX: 0,
  mouseY: 0,
},
downFlag: false, // 当前是否点击模块移动
mouseYBefore: 0, // 记录鼠标点击时Y坐标以及鼠标每移动30后重新记录鼠标Y坐标
mouseYLast: 0, // 实时记录鼠标移动时的Y坐标
nowCom: '', // 移动模块时,上一个模块或者下一个模块的名称
forFlage: false, // forEach遍历结束的标识
comRoute: [], // 动态加载组件列表
transCom: null, // 点击后悬浮的组件
compBox: null, // 获取当前组件在页面中的位置信息

3、scrollTop为页面滚动的距顶部的距离,从父组件传过来

props: {  scrollTop: Number,}

4、watch一些属性

watch: {
  comList: { 
    handler(val) {
      this.getCom(val); // 模块列表改变时,实时加载组件
    },
    deep: true,
    immediate: true, // 声明了之后会立马执行handler里面的函数
  },
  transType(val) { // 悬浮模块加载组件
    if (val) {
      this.transCom = () => import(`./default/${val}`);
    }
  },
  scrollTop: { // 监听页面滚动
    handler() {},
    immediate: true,
  },
  comType(newVal) {
    if (newVal) {
      this.comList.forEach((item, index) => {
        if (item === newVal) {
          this.comList[index] = 'moveBox';  // 将组建列表中为comType的元素改为moveBox组件
        }
      });
      this.getCom(this.comList);
    }
  },
  downFlag(newVal) { // 鼠标已经点击
    const nowThis = this;
    document.onmousemove = function (e) {
      if (newVal) { // 鼠标移动赋值
        nowThis.coordinate.mouseX = e.clientX;
        nowThis.coordinate.mouseY = e.clientY;
      }
    };
    document.onmouseup = function () { // 鼠标松开
      document.onmousemove = null;
      if (newVal) {
        nowThis.transType = ''; // 悬浮组件置空
        nowThis.comList.forEach((item, index) => {
          if (item === 'moveBox') { // 寻找moveBox所在位置
            nowThis.comList[index] = nowThis.comType; // 还原成点击组件
          }
        });
        nowThis.downFlag = false;
        nowThis.comType = '';
        nowThis.getCom(nowThis.comList);
      }
    };
  },
  coordinate: {
    handler(newVal) { // 悬浮组件位置
      this.$refs.translateBox.style.top = `${newVal.mouseY + this.scrollTop - 40 - this.compBox.y}px`;
      this.$refs.translateBox.style.left = `${newVal.mouseX - this.compBox.x - 200}px`;
      this.mouseYLast = newVal.mouseY;
    },
    deep: true,
  },
  mouseYLast(newVal) { // 鼠标移动Y坐标
    this.forFlage = false; 
    if (newVal - this.mouseYBefore > 30) {   // 移动30鼠标向下移,每移动30,moveBox移动一次
      this.comList.forEach((item, index) => {
        if (item === 'moveBox' && index < this.comLen - 1 && !this.forFlage) {
          this.nowCom = this.comList[index + 1];
          this.$set(this.comList, index + 1, 'moveBox');
          this.$set(this.comList, index, this.nowCom);
          this.mouseYBefore = newVal;
          this.forFlage = true;
        }
      });
    } else if (newVal - this.mouseYBefore < -30) {      // 鼠标向上移
      this.comList.forEach((item, index) => {
        if (item === 'moveBox' && index > 0 && !this.forFlage) {
          this.nowCom = this.comList[index - 1];
          // this.comList[index - 1] = 'moveBox';
          // this.comList[index] = this.nowCom;
         // this.comList[index]数组中采用这种方式赋值,vue是不能检测到数组的变动的
          this.$set(this.comList, index - 1, 'moveBox');
          this.$set(this.comList, index, this.nowCom);
          this.mouseYBefore = newVal;
          this.forFlage = true;
        }
      });
    }
  },
},

其中forFlage的作用是,在forEach中不能使用break这样来结束循环,所以用forFlage来表示,当遍历到moveBox后, 就结束遍历

5、methods

methods: {
  getCom(val) {
    this.comRoute = [];
    val.forEach((item) => {
      this.comRoute.push(() => import(`./default/${item}`));
    });
  },
  getData(data, dataY, dataX) {  // 模块组件点击后,父组件中调用此方法,并传值过来
    this.comType = data;
    this.transType = data;    // 目前考虑点击后立即移动,点击不移动的情况后期再考虑
    this.downFlag = true;
    this.mouseYBefore = dataY;
    this.$nextTick(() => {
      this.$refs.translateBox.style.top = `${dataY + this.scrollTop - 40 - this.compBox.y}px`;
      this.$refs.translateBox.style.left = `${dataX - this.compBox.x - 200}px`;
    });
  },
},

6、mounted

mounted() {
  this.comLen = this.comList.length;
  this.compBox = this.$refs.compBox.getBoundingClientRect();
  const that = this;
  window.onresize = () => (() => {
    that.compBox = this.$refs.compBox.getBoundingClientRect();
  })();
},

子组件

1、子组件template代码

<div class="pad-box hover-box name-box">
  <p class="absolute-box">
    <i class="el-icon-rank operation-icon move-icon"       @mousedown="mouseDown"></i>
    <i class="el-icon-circle-plus operation-icon"></i>
    <i class="el-icon-s-tools operation-icon"></i>
  </p>
  教育经验
</div>

2、script

export default {
  name: 'educationExp',
  data() {
    return {
      comType: 'educationExp',
      mouseYBefore: 0,
      mouseXBefore: 0,
    };
  },
  methods: {
    mouseDown(e) {
      this.mouseYBefore = e.clientY;
      this.mouseXBefore = e.clientX;
      this.$emit('getData', this.comType, this.mouseYBefore, this.mouseXBefore);
    },
  },
};