时间:2022-12-04 12:55:37 | 栏目:vue | 点击:次
本文实例为大家分享了vue实现指定区域自由拖拽、打印功能的具体代码,供大家参考,具体内容如下
先看下效果图,实现指定区域内内容自由拖拽,不超出。动态设置字体颜色及字号;设置完成实现打印指定区域内容,样式不丢失。
1、运行命令npm i vue-draggable-resizable -S, 安装拖拽插件vue-draggable-resizable,并引入使用(下面引入是放入main.js文件中)
import VueDraggableResizable from 'vue-draggable-resizable' // optionally import default styles import 'vue-draggable-resizable/dist/VueDraggableResizable.css' Vue.component('vue-draggable-resizable', VueDraggableResizable)
2、 实现指定区域内自由拖拽代码:
<div class="p-event" id="print" style="border: 1px solid red; box-sizing: border-box; height: 500px; width: 900px;"> <template v-for="(item, index) in list"> <vue-draggable-resizable parent=".p-event" :grid="[10,10]" :x="item.x" :y="item.y" :left="form.paddingLeft" :key="item+index" :parent="true" w="auto" h="auto" @dragging="onDrag" @resizing="onResize"> <p :style="{ fontSize: item.fontSize, color: item.color, lineHeight: item.lineHeight }">{{ item.name }}</p> </vue-draggable-resizable> </template> </div>
class=“p-event”, parent=".p-event", :parent=“true” 是为了设置父元素,且拖拽区域不能超过父元素。
x与y采用随机数,是为了初次进入,不会多个数据不会挤在左上角。
3、打印指定区域内内容
/** 打印方法 */ doPrint() { const subOutputRankPrint = document.getElementById('print') const newContent = subOutputRankPrint.innerHTML const oldContent = document.body.innerHTML document.body.innerHTML = newContent window.print() window.location.reload() document.body.innerHTML = oldContent return false },
去掉页头页尾
<style media="print" scoped> /** 去掉页头和页尾 */ @page { size: auto; /* auto is the initial value */ margin: 0mm; /* this affects the margin in the printer settings */ } </style>
整体代码如下:
<template> <div style="padding:30px;"> <h1>拖拽</h1> <el-button @click="doPrint">打印</el-button> <el-form ref="form" :model="form" label-width="80px"> <el-form-item label="字号设置"> <el-row :gutter="20"> <el-col :span="4"> <el-select v-model="form.name" @change="changeName();changeVal()"> <el-option v-for="(item,index) in list" :label="item.label" :key="index+item.label" :value="item.name"></el-option> </el-select> </el-col> <el-col :span="4"> <el-select v-model="form.selectVal" @change="changeHeight"> <el-option label="字体大小" value="fontSize"></el-option> <el-option label="行高设置" key="index+item.value" value="lineHeight"></el-option> </el-select> </el-col> <el-col :span="4"> <el-select v-model="form.fontSize" @change="changeVal"> <el-option v-for="(item,index) in sizeList" :key="index+item.value" :label="item.label" :value="item.value"></el-option> </el-select> </el-col> <el-col :span="4"> <el-color-picker v-model="form.color" @change="changeVal"></el-color-picker> </el-col> </el-row> </el-form-item> </el-form> <div class="p-event" id="print" style="border: 1px solid red; box-sizing: border-box; height: 500px; width: 900px;"> <template v-for="(item, index) in list"> <vue-draggable-resizable parent=".p-event" :grid="[10,10]" :x="item.x" :y="item.y" :left="form.paddingLeft" :key="item+index" :parent="true" w="auto" h="auto" @dragging="onDrag" @resizing="onResize"> <p :style="{ fontSize: item.fontSize, color: item.color, lineHeight: item.lineHeight }">{{ item.name }}</p> </vue-draggable-resizable> </template> </div> </div> </template> <script> export default { data: function() { return { width: 0, height: 0, x: 0, y: 0, form: { name: '', fontSize: '', selectVal: '', color: '', paddingTop: 20, paddingBottom: 0, paddingLeft: 0, paddingRight: 0 }, sizeList: [], // 字体号数组 apiArr: [ // 后期从接口中获取name集合 { name: '公司名称' }, { name: '抬头' }, { name: '公司简介' } ], list: [] // apiArr带上所有属性的集合 } }, mounted() { // 字号数组获取 for (let i = 12; i <= 48; i++) { this.sizeList.push({ label: `${i}px`, value: `${i}px` }) } // 网格上的数据获取 for (const it of this.apiArr) { this.list.push({ name: it.name, // 表名对应的值 label: it.name, // 表名 fontSize: '16px', // 默认字体 lineHeight: 'normal', // 默认行高 color: '#000000', // 默认颜色 x: Math.floor(Math.random() * (800 - 10)) + 10, // x默认值 y: Math.floor(Math.random() * (450 - 10)) + 10 // y 默认值 }) } }, methods: { /** 打印方法 */ doPrint() { const subOutputRankPrint = document.getElementById('print') const newContent = subOutputRankPrint.innerHTML const oldContent = document.body.innerHTML document.body.innerHTML = newContent window.print() window.location.reload() document.body.innerHTML = oldContent return false }, onResize: function(x, y, width, height) { this.x = x this.y = y this.width = width this.height = height }, onDrag: function(x, y) { this.x = x this.y = y }, /** 选择列下拉框 */ changeName() { this.form.fontSize = '' this.form.color = '' }, changeHeight() { this.form.fontSize = '' }, /** 下拉框改变的时候进行动态设置样式 */ changeVal() { if (this.form.name && this.form.fontSize && this.form.selectVal === 'fontSize') { this.commonMethod('fontSize') } if (this.form.name && this.form.fontSize && this.form.selectVal === 'lineHeight') { this.commonMethod('lineHeight') } if (this.form.name && this.form.color) { this.commonMethod('color') } }, /** 公共的设置样式方法 */ commonMethod(val) { for (const it of this.list) { if (it.label === this.form.name) { if (val === 'lineHeight') { it[val] = this.form.fontSize } else { it[val] = this.form[val] } } } } } } </script> <style scoped> /** 这里vdr的样式设置是为了当没有选中目标文字时,去掉默认的虚线框,只有选中的时候才有虚线框 */ .vdr { border: none; } .handle, .active.vdr { border: 1px dashed #000; } #print { position: relative; /** 网格样式 */ background: linear-gradient(-90deg, rgba(0, 0, 0, 0.1) 1px, transparent 1px) 0% 0% / 10px 10px, linear-gradient(rgba(0, 0, 0, 0.1) 1px, transparent 1px) 0% 0% / 10px 10px; } </style> <style media="print" scoped> /** 去掉页头和页尾 */ @page { size: auto; /* auto is the initial value */ margin: 0mm; /* this affects the margin in the printer settings */ } </style>