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@@ -0,0 +1,187 @@
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+import Vue from 'vue'
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+/*
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+* 使用方法
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+* 将以下代码复制到一个drag.js文件中,然后在入口文件main.js中导入:import ‘./util/drag.js’;
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+* 给elementUI的dialog上加上 v-dialogDrag 指令就可以实现弹窗的全屏和拉伸了。
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+* 给dialog设置 :close-on-click-modal="false" , 禁止点击遮罩层关闭弹出层
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+* 如果是form表单,不要将提交等按钮放置el-form-item,以免在上下拉伸时被隐藏
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+*/
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+// v-dialogDrag: 弹窗拖拽+水平方向伸缩
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+Vue.directive('dialogDrag', {
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+ bind(el, binding, vnode, oldVnode) {
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+ // 弹框可拉伸最小宽高
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+ const minWidth = 400
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+ const minHeight = 300
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+ // 初始非全屏
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+ let isFullScreen = false
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+ // 当前顶部高度
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+ let nowMarginTop = 0
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+ // 获取弹框头部(这部分可双击全屏)
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+ const dialogHeaderEl = el.querySelector('.el-dialog__header')
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+ // 弹窗
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+ const dragDom = el.querySelector('.el-dialog')
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+ // 给弹窗加上overflow auto;不然缩小时框内的标签可能超出dialog;
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+ dragDom.style.overflow = 'auto'
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+ // 清除选择头部文字效果
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+ // dialogHeaderEl.onselectstart = new Function("return false");
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+ // 头部加上可拖动cursor
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+ dialogHeaderEl.style.cursor = 'move'
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+ // 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
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+ const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null)
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+ const moveDown = e => {
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+ // 鼠标按下,计算当前元素距离可视区的距离
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+ const disX = e.clientX - dialogHeaderEl.offsetLeft
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+ const disY = e.clientY - dialogHeaderEl.offsetTop
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+ // 获取到的值带px 正则匹配替换
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+ let styL, styT
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+ // 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
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+ if (sty.left.includes('%')) {
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+ styL = +document.body.clientWidth * (+sty.left.replace(/\%/g, '') / 100)
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+ styT = +document.body.clientHeight * (+sty.top.replace(/\%/g, '') / 100)
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+ } else {
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+ styL = +sty.left.replace(/\px/g, '')
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+ styT = +sty.top.replace(/\px/g, '')
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+ }
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+ document.onmousemove = function(e) {
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+ // 通过事件委托,计算移动的距离
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+ const l = e.clientX - disX
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+ const t = e.clientY - disY
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+ // 移动当前元素
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+ dragDom.style.left = `${l + styL}px`
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+ dragDom.style.top = `${t + styT}px`
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+ // 将此时的位置传出去
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+ // binding.value({x:e.pageX,y:e.pageY})
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+ }
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+ document.onmouseup = function(e) {
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+ document.onmousemove = null
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+ document.onmouseup = null
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+ }
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+ }
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+ dialogHeaderEl.onmousedown = moveDown
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+ // 当前宽高
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+ let nowWidth = 0
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+ // let nowHight = 0
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+ // 双击头部全屏效果
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+ dialogHeaderEl.ondblclick = e => {
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+ if (isFullScreen === false) {
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+ // nowHight = dragDom.clientHeight
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+ nowWidth = dragDom.clientWidth
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+ nowMarginTop = dragDom.style.marginTop
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+ dragDom.style.left = 0
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+ dragDom.style.top = 0
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+ dragDom.style.height = '100VH'
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+ dragDom.style.width = '100VW'
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+ dragDom.style.marginTop = 0
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+ isFullScreen = true
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+ dialogHeaderEl.style.cursor = 'initial'
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+ dialogHeaderEl.onmousedown = null
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+ } else {
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+ dragDom.style.height = 'auto'
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+ dragDom.style.width = nowWidth + 'px'
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+ dragDom.style.marginTop = nowMarginTop
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+ isFullScreen = false
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+ dialogHeaderEl.style.cursor = 'move'
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+ dialogHeaderEl.onmousedown = moveDown
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+ }
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+ }
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+ dragDom.onmousemove = function(e) {
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+ // let moveE = e
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+ if (
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+ e.clientX > dragDom.offsetLeft + dragDom.clientWidth - 10 ||
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+ dragDom.offsetLeft + 10 > e.clientX
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+ ) {
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+ dragDom.style.cursor = 'w-resize'
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+ } else if (
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+ el.scrollTop + e.clientY >
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+ dragDom.offsetTop + dragDom.clientHeight - 10
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+ ) {
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+ dragDom.style.cursor = 's-resize'
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+ } else {
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+ dragDom.style.cursor = 'default'
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+
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+ dragDom.onmousedown = null
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+ }
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+ dragDom.onmousedown = e => {
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+ const clientX = e.clientX
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+ const clientY = e.clientY
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+ const elW = dragDom.clientWidth
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+ const elH = dragDom.clientHeight
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+ const EloffsetLeft = dragDom.offsetLeft
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+ const EloffsetTop = dragDom.offsetTop
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+ dragDom.style.userSelect = 'none'
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+ const ELscrollTop = el.scrollTop
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+ // 判断点击的位置是不是为头部
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+ if (
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+ clientX > EloffsetLeft &&
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+ clientX < EloffsetLeft + elW &&
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+ clientY > EloffsetTop &&
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+ clientY < EloffsetTop + 100
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+ ) {
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+ // 如果是头部在此就不做任何动作,以上有绑定dialogHeaderEl.onmousedown = moveDown;
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+ } else {
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+ document.onmousemove = function(e) {
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+ // 移动时禁用默认事件
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+ e.preventDefault()
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+ // 左侧鼠标拖拽位置
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+ if (clientX > EloffsetLeft && clientX < EloffsetLeft + 10) {
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+ // 往左拖拽
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+ if (clientX > e.clientX) {
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+ dragDom.style.width = elW + (clientX - e.clientX) * 2 + 'px'
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+ }
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+ // 往右拖拽
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+ if (clientX < e.clientX) {
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+ if (dragDom.clientWidth < minWidth) {
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+ console.log()
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+ } else {
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+ dragDom.style.width = elW - (e.clientX - clientX) * 2 + 'px'
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+ }
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+ }
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+ }
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+ // 右侧鼠标拖拽位置
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+ if (
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+ clientX > EloffsetLeft + elW - 10 &&
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+ clientX < EloffsetLeft + elW
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+ ) {
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+ // 往左拖拽
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+ if (clientX > e.clientX) {
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+ if (dragDom.clientWidth < minWidth) {
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+ console.log()
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+ } else {
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+ dragDom.style.width = elW - (clientX - e.clientX) * 2 + 'px'
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+ }
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+ }
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+ // 往右拖拽
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+ if (clientX < e.clientX) {
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+ dragDom.style.width = elW + (e.clientX - clientX) * 2 + 'px'
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+ }
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+ }
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+ // 底部鼠标拖拽位置
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+ if (
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+ ELscrollTop + clientY > EloffsetTop + elH - 20 &&
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+ ELscrollTop + clientY < EloffsetTop + elH
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+ ) {
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+ // 往上拖拽
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+ if (clientY > e.clientY) {
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+ if (dragDom.clientHeight < minHeight) {
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+ console.log()
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+ } else {
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+ dragDom.style.height = elH - (clientY - e.clientY) * 2 + 'px'
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+ }
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+ }
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+ // 往下拖拽
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+ if (clientY < e.clientY) {
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+ dragDom.style.height = elH + (e.clientY - clientY) * 2 + 'px'
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+ }
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+ }
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+ }
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+ // 拉伸结束
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+ document.onmouseup = function(e) {
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+ document.onmousemove = null
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+
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+ document.onmouseup = null
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+ }
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+ }
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+ }
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+ }
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+ }
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+})
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