image.png
首先---js文件
Vue.prototype.dropDialog = function (el){
// 彈框可拉伸最小寬高
const minWidth = 820
// eslint-disable-next-line no-unused-vars
const minHeight = 460
// 初始非全屏
let isFullScreen = false
// 當(dāng)前寬高
let nowWidth = 0
// eslint-disable-next-line no-unused-vars
let nowHeight = 0
// 當(dāng)前頂部高度
let nowMarginTop = 0
// 獲取彈框頭部（這部分可雙擊全屏）
const dialogHeaderEl = el.querySelector('.el-dialog__header')
// 彈窗
const dragDom = el.querySelector('.el-dialog')
// 給彈窗加上overflow auto师坎；不然縮小時框內(nèi)的標(biāo)簽可能超出dialog赠群；
dragDom.style.overflow = 'auto'
// 清除選擇頭部文字效果
// dialogHeaderEl.onselectstart = new Function("return false");
// 頭部加上可拖動cursor
dialogHeaderEl.style.cursor = 'move'
// 獲取原有屬性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null)
const moveDown = (e) => {
// 鼠標(biāo)按下蹂随，計算當(dāng)前元素距離可視區(qū)的距離
const disX = e.clientX - dialogHeaderEl.offsetLeft
const disY = e.clientY - dialogHeaderEl.offsetTop
// 獲取到的值帶px 正則匹配替換
let styL, styT
// 注意在ie中 第一次獲取到的值為組件自帶50% 移動之后賦值為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) {
// 通過事件委托曲饱，計算移動的距離
const l = e.clientX - disX
const t = e.clientY - disY
// 移動當(dāng)前元素
dragDom.style.left = `${l + styL}px`
dragDom.style.top = `${t + styT}px`
// 將此時的位置傳出去
// binding.value({ x: e.pageX, y: e.pageY })
}
document.onmouseup = function (e) {
document.onmousemove = null
document.onmouseup = null
}
}
dialogHeaderEl.onmousedown = moveDown
// 雙擊頭部全屏效果
dialogHeaderEl.ondblclick = (e) => {
if (isFullScreen === false) {
nowHeight = dragDom.clientHeight
nowWidth = dragDom.clientWidth
nowMarginTop = dragDom.style.marginTop
dragDom.style.left = 0
dragDom.style.top = 0
dragDom.style.height = '100VH'
dragDom.style.width = '100VW'
dragDom.style.marginTop = 0
isFullScreen = true
dialogHeaderEl.style.cursor = 'initial'
dialogHeaderEl.onmousedown = null
} else {
dragDom.style.height = 'auto'
dragDom.style.width = nowWidth + 'px'
dragDom.style.marginTop = nowMarginTop
isFullScreen = false
dialogHeaderEl.style.cursor = 'move'
dialogHeaderEl.onmousedown = moveDown
}
}
dragDom.onmousemove = function (e) {
// eslint-disable-next-line no-unused-vars
const moveE = e
if (e.clientX > dragDom.offsetLeft + dragDom.clientWidth - 10 || dragDom.offsetLeft + 10 > e.clientX) {
dragDom.style.cursor = 'w-resize'
// eslint-disable-next-line brace-style
}
else if (el.scrollTop + e.clientY > dragDom.offsetTop + dragDom.clientHeight - 10) {
dragDom.style.cursor = 's-resize'
} else {
dragDom.style.cursor = 'default'
dragDom.onmousedown = null
}
dragDom.onmousedown = (e) => {
const clientX = e.clientX
const clientY = e.clientY
const elW = dragDom.clientWidth
// eslint-disable-next-line no-unused-vars
const elH = dragDom.clientHeight
const EloffsetLeft = dragDom.offsetLeft
const EloffsetTop = dragDom.offsetTop
dragDom.style.userSelect = 'none'
// eslint-disable-next-line no-unused-vars
const ELscrollTop = el.scrollTop
// 判斷點(diǎn)擊的位置是不是為頭部
if (clientX > EloffsetLeft && clientX < EloffsetLeft + elW && clientY > EloffsetTop && clientY < EloffsetTop + 100) {
// 如果是頭部在此就不做任何動作阳啥，以上有綁定dialogHeaderEl.onmousedown = moveDown;
} else {
document.onmousemove = function (e) {
e.preventDefault() // 移動時禁用默認(rèn)事件
// 左側(cè)鼠標(biāo)拖拽位置
if (clientX > EloffsetLeft && clientX < EloffsetLeft + 10) {
// 往左拖拽
if (clientX > e.clientX) {
dragDom.style.width = elW + (clientX - e.clientX) * 2 + 'px'
}
// 往右拖拽
if (clientX < e.clientX) {
if (dragDom.clientWidth < minWidth) {
} else {
dragDom.style.width = elW - (e.clientX - clientX) * 2 + 'px'
}
}
}
// 右側(cè)鼠標(biāo)拖拽位置
if (clientX > EloffsetLeft + elW - 10 && clientX < EloffsetLeft + elW) {
// 往左拖拽
if (clientX > e.clientX) {
if (dragDom.clientWidth < minWidth) {
} else {
dragDom.style.width = elW - (clientX - e.clientX) * 2 + 'px'
}
}
// 往右拖拽
if (clientX < e.clientX) {
dragDom.style.width = elW + (e.clientX - clientX) * 2 + 'px'
}
}
// 底部鼠標(biāo)拖拽位置
if (ELscrollTop + clientY > EloffsetTop + elH - 20 && ELscrollTop + clientY < EloffsetTop + elH) {
// 往上拖拽
if (clientY > e.clientY) {
if (dragDom.clientHeight < minHeight) {
} else {
dragDom.style.height = elH - (clientY - e.clientY) * 2 + 'px'
}
}
// 往下拖拽
if (clientY < e.clientY) {
dragDom.style.height = elH + (e.clientY - clientY) * 2 + 'px'
}
}
}
// 拉伸結(jié)束
document.onmouseup = function (e) {
document.onmousemove = null
document.onmouseup = null
}
}
}
}
}
2.頁面引入js文件 給dialog加入open事件和 ref
image.png
methods調(diào)用方法
open_handling_Surrender() { //彈框拖拽
this.dropDialog(this.$refs.handling_SurrenderDialog.$el)
},
