vue实现可拖拽div大小的方法
时间:2022-06-01 11:25:10|栏目:vue|点击: 次
下面看下vue中可拖拽div大小的方法。
可封装为全局方法在项目中所需要地方直接调用(mixins)
方法:
参数:
1.allBox:最外层第div class;
2.leftBox:最左层第div class;
3.resizeBox:中间div class;
4.rightBox:最右层第div class;
leftMin /rightMin 距离左右2侧最小距离;
leftBox,resizeBox,rightBox设置宽度均需float;
*若是在内部容器中,须在最外层添加position: relative,否则会引起跳动,计算距离错误
dragDiv(allBox, leftBox, resizeBox, rightBox, leftMin = 200, rightMin = 200) { var box = document.getElementsByClassName(allBox); var left = document.getElementsByClassName(leftBox); var resize = document.getElementsByClassName(resizeBox); var right = document.getElementsByClassName(rightBox); for(let i = 0; i < resize.length; i++) { // 鼠标按下事件 resize[i].onmousedown = function(e) { // 颜色改变提醒 resize[i].style.background = '#818181'; var startX = e.clientX; resize[i].left = resize[i].offsetLeft; // 鼠标拖动事件 document.onmousemove = function(e) { var endX = e.clientX; var moveLen = resize[i].left + (endX - startX); // (endx-startx)=移动的距离。resize[i].left+移动的距离=左边区域最后的宽度 var maxT = box[i].clientWidth - resize[i].offsetWidth; // 容器宽度 - 左边区域的宽度 = 右边区域的宽度 if(moveLen < leftMin) moveLen = leftMin; if(moveLen > maxT - rightMin) moveLen = maxT - rightMin; resize[i].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'; right[j].style.width = (box[i].clientWidth - moveLen - 10) + 'px'; } }; // 鼠标松开事件 document.onmouseup = function(evt) { // 颜色恢复 resize[i].style.background = '#d6d6d6'; document.onmousemove = null; document.onmouseup = null; resize[i].releaseCapture && resize[i].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[i].setCapture && resize[i].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; }; } },
补充:vue中的可拖拽宽度div
主要思路
- 在需要拖拽宽度的区域设置一个div,高度设为 100%,宽度尽量窄一些(也不要太窄,3~6px左右)
- 在此div上绑定当“鼠标按下”时,触发document绑定“鼠标移动”方法和"鼠标抬起"方法
- 通过鼠标移动方法不断获取当前鼠标位置,设置需要变化大小div的宽高。
- 鼠标抬起时取消鼠标移动方法和鼠标抬起方法的绑定。
<template> <div class="container" id="content_box"> <div class="tab">左侧Tab</div> <div class="menu" ref="menu"> 左侧菜单 <div class="menu-resize" ref="menuResize"></div> </div> <div class="content"> 中心区域 <div class="opera" ref="opera"> <div class="opera-resize" ref="operaResize"></div> 操作区域 </div> </div> </template> <script> export default { name: "dropWidth", mounted() { this.$nextTick(() => { this.dropSize(); }) }, methods: { dropSize() { let that = this, menuWidth = 200, operaHeight = 200; this.$refs.menuResize.onmousedown = function () { document.onmousemove = function (e) { let clientX = e.clientX; // 最大宽度 if(clientX>=330){ clientX = 330; } // 最小宽度 if(clientX<=230){ clientX = 230; // TODO 这里减的是最左侧tab的宽度 menuWidth = clientX - 30; that.$refs.menu.style.width = clientX - 30 +"px"; } document.onmouseup = function () { console.log('当前宽度', menuWidth); document.onmousemove = null; document.onmouseup = null; that.releaseCapture && that.releaseCapture() } this.$refs.operaResize.onmousedown = function () { let clientY = e.clientY; console.log(clientY) if(clientY<=100){ clientY = 100; if(clientY>=300){ clientY = 300; operaHeight = clientY; // TODO 这里需要取反向 that.$refs.opera.style.height = 400 - clientY +"px"; console.log('当前宽度', operaHeight); } } } </script> <style scoped> .container { width: 1000px; height: 400px; border: 2px solid #dddddd; display: flex; justify-content: center; .tab { width: 30px; height: 100%; background-color: #EC8C32; flex-shrink: 0; flex-grow: 0; .menu { width: 200px; background-color: #AAB6E0; position: relative; .content { width: 100%; .opera { height: 200px; position: absolute; bottom: 0; background-color: #F2BE25; .menu-resize { width: 5px; top: 0; right: 0; cursor: col-resize; .opera-resize { height: 5px; left: 0; cursor: row-resize; </style>
实现效果