vue自动滚动组件 可以支持鼠标滚轮操作

vue自动滚动组件 可以支持鼠标滚轮操作

<template>
  <div ref="scrollMain" class="auto-scroll-list-main" @click="autoScrollClick($event)"
       :key="keyValue" @mouseover="mEnter" @mouseleave="mLeave"
  >
      <div ref="scrollItemBox" class="seamless-warp-box" >
        <slot/>
      div>
      <div v-html="copyHtml" class="seamless-warp-box">div>
  div>
template>

<script>

import LOG from '@/utils/self-log'

export default {
  name: 'AutoScrollList',
  props: {
    listData: {
      type: Array
    },
    isPause: {
      type: Boolean,
      default: false
    },
    keyValue: { type: String, default: '' }
  },
  mounted() {
    // 如果列表数据是异步获取的，记得初始化在获取数据后再调用
    this.initScroll()
  },
  data() {
    return {
      scrollTop: 0, //列表滚动高度
      speed: 70, //滚动的速度
      copyHtml: null,
      scrollInterval: null,
    }
  },
  watch: {
    isPause(newValue, _) {
      LOG.info('isPause='+ newValue)
      if (newValue) {
        this.mEnter()
      } else {
        this.mLeave()
      }
    },
    listData(newValue, _) {
      this.mEnter()
      this.initScroll()
    },
  },
  methods: {
    initScroll() {
      this.$nextTick(() => {
        this.copyHtml = this.$refs.scrollItemBox.innerHTML
        this.startScroll()
      })
    },
    // 鼠标移入停止滚动
    mEnter() {
      if (this.scrollInterval) {
        clearInterval(this.scrollInterval)
        this.scrollInterval=null
      }
    },
    // 鼠标移出继续滚动
    mLeave() {
      this.startScroll()
    },
    // 开始滚动
    startScroll() {
      //在当前位置开始滚动
      this.scrollTop=this.$refs.scrollMain.scrollTop
      this.scrollInterval = setInterval(this.scroll, this.speed)
    },
    // 滚动处理方法
    scroll() {
      this.scrollTop=this.scrollTop+1
      this.$refs.scrollMain.scrollTop=this.scrollTop
      // 获取需要滚动的盒子的高度
      let scrollItemBox = this.$refs.scrollMain.scrollHeight/2
      // 当判断滚动的高度大于等于盒子高度时，从头开始滚动
      if (this.scrollTop >= scrollItemBox) {
        this.scrollTop = 0
      }
    },
    autoScrollClick(e) {
      let index = e.target.dataset.index
      if (index === undefined) {
        return
      }
      this.$emit('autoScrollClick', index)
    }
  },
  destroyed(){
    this.mEnter()
  }
}
script>

<style lang="scss" scoped>
.auto-scroll-list-main {
  overflow: auto;
  height: 100%;
}

.auto-scroll-list-main::-webkit-scrollbar {
  display: none
}

.seamless-warp-box {
  width: 100%;
}
style>


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123