| 提交 | 用户 | 时间 | ||
| e57a89 | 1 | /** |
| 懒 | 2 | * v-dialogDrag 弹窗拖拽 |
| 3 | * Copyright (c) 2019 jcdm | |
| 4 | */ | |
| 5 | ||
| 6 | export default { | |
| 7 | bind(el, binding, vnode, oldVnode) { | |
| 8 | const value = binding.value | |
| 9 | if (value == false) return | |
| 10 | // 获取拖拽内容头部 | |
| 11 | const dialogHeaderEl = el.querySelector('.el-dialog__header'); | |
| 12 | const dragDom = el.querySelector('.el-dialog'); | |
| 13 | dialogHeaderEl.style.cursor = 'move'; | |
| 14 | // 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null); | |
| 15 | const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null); | |
| 16 | dragDom.style.position = 'absolute'; | |
| 17 | dragDom.style.marginTop = 0; | |
| 18 | let width = dragDom.style.width; | |
| 19 | if (width.includes('%')) { | |
| 20 | width = +document.body.clientWidth * (+width.replace(/\%/g, '') / 100); | |
| 21 | } else { | |
| 22 | width = +width.replace(/\px/g, ''); | |
| 23 | } | |
| 24 | dragDom.style.left = `${(document.body.clientWidth - width) / 2}px`; | |
| 25 | // 鼠标按下事件 | |
| 26 | dialogHeaderEl.onmousedown = (e) => { | |
| 27 | // 鼠标按下，计算当前元素距离可视区的距离 (鼠标点击位置距离可视窗口的距离) | |
| 28 | const disX = e.clientX - dialogHeaderEl.offsetLeft; | |
| 29 | const disY = e.clientY - dialogHeaderEl.offsetTop; | |
| 30 | ||
| 31 | // 获取到的值带px 正则匹配替换 | |
| 32 | let styL, styT; | |
| 33 | ||
| 34 | // 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px | |
| 35 | if (sty.left.includes('%')) { | |
| 36 | styL = +document.body.clientWidth * (+sty.left.replace(/\%/g, '') / 100); | |
| 37 | styT = +document.body.clientHeight * (+sty.top.replace(/\%/g, '') / 100); | |
| 38 | } else { | |
| 39 | styL = +sty.left.replace(/\px/g, ''); | |
| 40 | styT = +sty.top.replace(/\px/g, ''); | |
| 41 | }; | |
| 42 | ||
| 43 | // 鼠标拖拽事件 | |
| 44 | document.onmousemove = function (e) { | |
| 45 | // 通过事件委托，计算移动的距离 （开始拖拽至结束拖拽的距离） | |
| 46 | const l = e.clientX - disX; | |
| 47 | const t = e.clientY - disY; | |
| 48 | ||
| 49 | let finallyL = l + styL | |
| 50 | let finallyT = t + styT | |
| 51 | ||
| 52 | // 移动当前元素 | |
| 53 | dragDom.style.left = `${finallyL}px`; | |
| 54 | dragDom.style.top = `${finallyT}px`; | |
| 55 | ||
| 56 | }; | |
| 57 | ||
| 58 | document.onmouseup = function (e) { | |
| 59 | document.onmousemove = null; | |
| 60 | document.onmouseup = null; | |
| 61 | }; | |
| 62 | } | |
| 63 | } | |
| 64 | }; | |
