25-vue中实现拖动调整左右两侧盒子的宽度
这里是直接完整一个组件，路由引入即可看到效果。
<template>
<div class="box" ref="box">
<div class="left">
<!--左侧div内容-->
<h1>到了时间你就一定要上场</h1>
<h1>当意识到达，那就必须上岸</h1>
</div>
<div class="resize" title="收缩侧边栏"></div>
<div class="mid">
<!--右侧div内容-->
<h1>我希望我希望的有希望</h1>
<h1>想着光向着光</h1>
</div>
</div>
</template>
<script>
export default {
data() {
return {};
},
methods: {
dragControllerDiv() {
var resize = document.getElementsByClassName("resize")[0];
var left = document.getElementsByClassName("left");
var mid = document.getElementsByClassName("mid");
var box = document.getElementsByClassName("box")[0];
// 鼠标按下事件
resize.onmousedown = function (e) {
//颜色改变提醒
resize.style.background = "#818181";
var startX = e.clientX;
resize.left = resize.offsetLeft;
// 鼠标拖动事件
document.onmousemove = function (e) {
var endX = e.clientX;
var moveLen = resize.left + (endX - startX); // （endx-startx）=移动的距离。resize.left+移动的距离=左边区域最后的宽度
var maxT = box.clientWidth - resize.offsetWidth; // 容器宽度 - 左边区域的宽度 = 右边区域的宽度
if (moveLen < 32) moveLen = 32; // 左边区域的最小宽度为32px
if (moveLen > maxT - 150) moveLen = maxT - 150; //右边区域最小宽度为150px
resize.style.left = moveLen; // 设置左侧区域的宽度
for (let j = 0; j < left.length; j++) {
left[j].style.width = moveLen + "px";
mid[j].style.width = box.clientWidth - moveLen - 10 + "px";
}
};
// 鼠标松开事件
document.onmouseup = function () {
//颜色恢复
resize.style.background = "#d6d6d6";
document.onmousemove = null;
document.onmouseup = null;
resize.releaseCapture && resize.releaseCapture(); //当你不在需要继续获得鼠标消息就要应该调用ReleaseCapture()释放掉
};
resize.setCapture && resize.setCapture(); //该函数在属于当前线程的指定窗口里设置鼠标捕获
return false;
};
},
},
mounted() {
this.dragControllerDiv();
},
};
</script>
<style scoped>
/* 拖拽相关样式 */
/*包围div样式*/
.box {
width: 100%;
height: 50vh;
margin: 5vh 0px;
overflow: hidden;
box-shadow: -1px 9px 10px 3px rgba(0, 0, 0, 0.11);
}
/*左侧div样式*/
.left {
width: calc(32% - 10px); /*左侧初始化宽度*/
height: 100%;
background: #ffffff;
float: left;
}
/*拖拽区div样式*/
.resize {
cursor: col-resize;
float: left;
position: relative;
top: 45%;
background-color: #d6d6d6;
border-radius: 5px;
margin-top: -10px;
width: 10px;
height: 50px;
background-size: cover;
background-position: center;
/*z-index: 99999;*/
font-size: 32px;
color: white;
}
/*拖拽区鼠标悬停样式*/
.resize:hover {
color: #444444;
}
/*右侧div'样式*/
.mid {
float: left;
width: 68%; /*右侧初始化宽度*/
height: 100%;
background: #fff;
box-shadow: -1px 4px 5px 3px rgba(0, 0, 0, 0.11);
}
</style>
封装好的组件：（vue文件）
<template>
<div id="dragLayoutBox">
<div class="left_box">
<slot name="left-content"></slot>
</div>
<div class="right_box">
<div v-if="iframeIsHave" class="opacity_box"></div>
<div
v-show="dragBtnFlag"
class="drag_btn"
@mousedown="changeBoxStyleFn('')"
@onmouseup="changeBoxStyleFn('none')"
></div>
<slot name="right-content"> </slot>
</div>
</div>
</template>
<script>
export default {
props: {
// 是否默认显示拖拽按钮
dragBtnFlag: {
typeof: Boolean,
default: true
},
// 盒子中是否有iframme
iframeIsHave: {
typeof: Boolean,
default: false
},
// 配置项 注意：色值暂时只支持16进制写法
setCssProps: {
typeof: Object,
default: () => ({
// 左右盒子最小拖动宽度
leftMinWidth: '200px',
rightMinWidth: '500px',
dragBtnCss: {
mousedown: {
background: '#919191'
},
onmouseup: {
background: '#d6d6d6'
}
}
})
}
},
mounted() {
if (this.iframeIsHave) {
this.changeBoxStyleFn('none')
}
this.dragChangeLayoutFn()
},
methods: {
getDomFn(name) {
const ele = document.querySelector(name)
const ws = new WeakSet()
ws.add(ele)
return ele
},
changeBoxStyleFn(value) {
if (this.iframeIsHave) {
const opacityBox = this.getDomFn('.opacity_box')
opacityBox.style.display = value
}
},
dragChangeLayoutFn() {
const that = this
const dragBtn = this.getDomFn('.drag_btn')
const left_box = this.getDomFn('.left_box')
const right_box = this.getDomFn('.right_box')
const dragLayoutBox = this.getDomFn('#dragLayoutBox')
dragBtn.onmousedown = function (e) {
const styleStr = that.handleEleStyleFn(that.setCssProps.dragBtnCss.mousedown)
dragBtn.style.cssText = `${styleStr}`
const startPos = e.clientX
dragBtn.left = dragBtn.offsetLeft
document.onmousemove = e => {
const endPos = e.clientX
let moveW = dragBtn.left - 20 + (endPos - startPos)
const maxW = dragLayoutBox.clientWidth - dragBtn.offsetWidth
// 左边区域的最小宽度
const leftValue = parseInt(that.setCssProps.leftMinWidth)
if (moveW < leftValue) {
moveW = leftValue
}
// 右边区域最小宽度
const rightValue = parseInt(that.setCssProps.rightMinWidth)
if (moveW > maxW - rightValue) {
moveW = maxW - rightValue
}
left_box.style.cssText = `width:${moveW}px`
right_box.style.width = dragLayoutBox.clientWidth - moveW + 'px'
}
document.onmouseup = () => {
const styleStr = that.handleEleStyleFn(that.setCssProps.dragBtnCss.onmouseup)
dragBtn.style.cssText = `${styleStr}`
document.onmousemove = document.onmouseup = null
if (that.iframeIsHave) {
that.changeBoxStyleFn('none')
}
dragBtn.releaseCapture && dragBtn.releaseCapture()
}
dragBtn.setCapture && dragBtn.setCapture()
return false
}
},
// 处理传来的对象：{k1:"v1",k2:"v2"} => "k1:v1;k2:v2"
handleEleStyleFn(obj) {
let str = JSON.stringify(obj)
const indexstart = str.indexOf('{')
const indexEnd = str.indexOf('}')
str = str.slice(indexstart + 1).slice(0, indexEnd - 1)
const reg1 = /,/g
const reg2 = /"|'/g
return str.replace(reg1, ';').replace(reg2, '')
}
}
}
</script>
<style scoped>
#dragLayoutBox {
width: 100%;
display: flex;
justify-content: space-between;
box-shadow: 0px 20px 40px 0px rgba(0, 0, 0, 0.08);
}
.drag_btn {
position: absolute;
top: calc((100vh - 50px) / 2);
width: 8px;
height: 50px;
cursor: col-resize;
background: rgba(0, 0, 0, 0.1);
border-radius: 5px;
margin-top: -10px;
background-size: cover;
background-position: center;
font-size: 32px;
color: white;
z-index: 1112;
}
.opacity_box {
width: 100%;
height: 100%;
position: absolute;
margin-top: 30px;
filter: alpha(opacity=0);
opacity: 0;
background: transparent;
z-index: 1111;
}
</style>
使用：
1.引入和注册
const LayoutDrag = () => import('./LayoutDrag/index.vue')
components: { LayoutDrag }
2.使用：iframeIsHave为true表示右侧区域内有iframe，默认不传则为false，这个的判定就是为了解决当有iframe（比如富文本）拖拽时卡顿问题
<LayoutDrag :iframeIsHave="true">
<template v-slot:left-content>
// 你的左侧盒子的盛放区域
</template>
<template v-slot:right-content>
// 你的右侧盒子盛放区域
</template>
</LayoutDrag>
