element 弹窗位置拖拽；拖拽宽高

逃离我推掉我的手 2023-02-21 04:52 45阅读 0赞

vue

directives.js

import Vue from 'vue';
    
    // v-dialogDrag: 弹窗拖拽
    Vue.directive('dialogDrag', {
        bind(el, binding, vnode, oldVnode) {
            const dialogHeaderEl = el.querySelector('.el-dialog__header');
            const dragDom = el.querySelector('.el-dialog');
            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);
            
            dialogHeaderEl.onmousedown = (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;
                };
            }  
        }
    })
    
    // v-dialogDragWidth: 弹窗宽度拖大 拖小
    Vue.directive('dialogDragWidth', {
     bind(el, binding, vnode, oldVnode) {
            const dragDom = binding.value.$el.querySelector('.el-dialog');
    
            el.onmousedown = (e) => {
                
                // 鼠标按下，计算当前元素距离可视区的距离
                const disX = e.clientX - el.offsetLeft;
                
                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 l = e.clientX - disX;
                    dragDom.style.width = `${l}px`;
                };
    
                document.onmouseup = function (e) {
                    document.onmousemove = null;
                    document.onmouseup = null;
                };
            }  
        }
    })

main.js

// 引入自定义指令
    import './directives.js';