验证中...
elementUI的el-dialog弹窗优化
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import Vue from 'vue';
/*
* 定义公共js里,在入口文件main.js中import;
* 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。
*/
// v-dialogDrag: 弹窗拖拽+水平方向伸缩
Vue.directive('dialogDrag', {
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');
//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);
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;
//双击头部效果
dialogHeaderEl.ondblclick = (e) => {
if (isFullScreen == false) {
nowHight = 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;
}
}
//拉伸
let resizeEl=document.createElement("div");
dragDom.appendChild(resizeEl);
//在弹窗右下角加上一个10-10px的控制块
resizeEl.style.cursor = 'se-resize';
resizeEl.style.position = 'absolute';
resizeEl.style.height = '10px';
resizeEl.style.width = '10px';
resizeEl.style.right = '0px';
resizeEl.style.bottom = '0px';
//鼠标拉伸弹窗
resizeEl.onmousedown = (e) => {
// 记录初始x位置
const clientX = e.clientX;
// 鼠标按下,计算当前元素距离可视区的距离
const disX = e.clientX - resizeEl.offsetLeft;
const disY = e.clientY - resizeEl.offsetTop;
document.onmousemove = function (e) {
e.preventDefault(); // 移动时禁用默认事件
// 通过事件委托,计算移动的距离
const x = e.clientX - disX + (e.clientX - clientX);//这里 由于elementUI的dialog控制居中的,所以水平拉伸效果是双倍
const y = e.clientY - disY;
//比较是否小于最小宽高
dragDom.style.width = x > minWidth ? `${x}px` : minWidth + 'px';
dragDom.style.height = y > minHeight ? `${y}px` : minHeight + 'px';
};
//拉伸结束
document.onmouseup = function (e) {
document.onmousemove = null;
document.onmouseup = null;
};
}
}
})
/**
* 注意:如果是el-dialog弹出的表单el-form,最好不要把提交按钮当做el-form-item(elementUI文档是这么用的),放在el-dialog里。
* 不然按钮会同el-dialog中标签一样被overflow;
*/

Comment list( 3 )

洋洋 2019-06-25 21:08

好像拉伸不了呢

yuanjing 2018-06-07 16:15

文件放在static里,在main.js里import下,然后给el-dialog标签加一个v-dialogDrag,就行了啊

HK 2018-06-06 16:52

杂用啊,为啥没效果啊

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