elementui弹框拖拽和放大缩小 第一节
作者:互联网
export default {
bind(el, binding, vnode, oldVnode) {
//弹框可拉伸最小宽高
let minWidth = 400;
let minHeight = 300;
//初始非全屏
let isFullScreen = false;
//当前宽高
let nowWidth = 0;
// let nowHight = 0;
//当前顶部高度
let nowMarginTop = 0;
//获取弹框头部(这部分可双击全屏)
const dialogHeaderEl = el.querySelector('.el-dialog__header');
let hasSetBodyHight = false;
//弹窗
const dragDom = el.querySelector('.el-dialog');
//给弹窗加上overflow auto;不然缩小时框内的标签可能超出dialog;
// dragDom.style.overflow = "auto";
//清除选择头部文字效果
dialogHeaderEl.onselectstart = new Function("return false");
//头部加上可拖动cursor
dialogHeaderEl.style.cursor = 'move';
// 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null);
//头部插入最大化最小化元素
let maxMin = document.createElement("button");
maxMin.className +=' el-dialog__headerbtn el-dialog__minmax';
maxMin.style.right = '40px';
maxMin.style.color = '#909399';
maxMin.title='最大化';
maxMin.innerHTML = '<i class="fa el-icon-full-screen" onm ouseOver="this.style.color=\'#409EFF\'" onm ouseOut="this.style.color=\'inherit\'"></i>';
dialogHeaderEl.insertBefore(maxMin,dialogHeaderEl.childNodes[1]);
let moveDown = (e) => {
// 鼠标按下,计算当前元素距离可视区的距离
const disX = e.clientX - dialogHeaderEl.offsetLeft;
const disY = e.clientY - dialogHeaderEl.offsetTop;
// 获取到的值带px 正则匹配替换
let styL, styT;
// 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px
if (sty.left.includes('%')) {
styL = +document.body.clientWidth * (+sty.left.replace(/\%/g, '') / 100);
styT = +document.body.clientHeight * (+sty.top.replace(/\%/g, '') / 100);
} else {
styL = +sty.left.replace(/\px/g, '');
styT = +sty.top.replace(/\px/g, '');
};
document.onmousemove = function (e) {
// 通过事件委托,计算移动的距离
const l = e.clientX - disX;
const t = e.clientY - disY;
// 移动当前元素 dragDom.style.left = `${l + styL}px`; dragDom.style.top = `${t + styT}px`;
//将此时的位置传出去 //binding.value({x:e.pageX,y:e.pageY}) }; document.onmouseup = function (e) { document.onmousemove = null; document.onmouseup = null; }; } dialogHeaderEl.onmousedown = moveDown; // let bodyHeight = 'auto';
// 移动当前元素 dragDom.style.left = `${l + styL}px`; dragDom.style.top = `${t + styT}px`;
//将此时的位置传出去 //binding.value({x:e.pageX,y:e.pageY}) }; document.onmouseup = function (e) { document.onmousemove = null; document.onmouseup = null; }; } dialogHeaderEl.onmousedown = moveDown; // let bodyHeight = 'auto';
标签:el,const,elementui,弹框,dialogHeaderEl,let,maxMin,document,拖拽 来源: https://www.cnblogs.com/Mr-dongjuntao/p/16249356.html