伏龙阁资源网

vue-cli结合Element-ui基于cropper.js封装vue实现图片裁剪组件功能
站长资源 2024/11/28 佚名
2 0

前端工作中，经常需要图片裁剪的场景，cropper.js是一款优秀的前端插件，api十分丰富。

本文是在vue-cli项目下封装图片裁剪插件，效果图如下：

vue-cli结合Element-ui基于cropper.js封装vue实现图片裁剪组件功能

话不多说，看步骤吧。

第一步：准备开发环境

cropper.js是基于jquery的，所以要先安装jquery

执行命令：

  npm  install --save-dev jquery cropper

 为webpack配置添加jquery的映射

修改webpack.base.conf.js配置，添加标红的一行

vue-cli结合Element-ui基于cropper.js封装vue实现图片裁剪组件功能

第二步：新建图片裁剪组件

vue-cli结合Element-ui基于cropper.js封装vue实现图片裁剪组件功能

index.vue内容：

由于用了element-ui,其中布局就引用了element-ui的组件

 template:

<template>
 <div class="modal-dialog modal-lg" :id="id">
 <div class="modal-content">
  <form class="avatar-form" enctype="multipart/form-data" method="post">
  <div class="modal-header">
  </div>
  <div class="modal-body">
   <div class="avatar-body">
   <!-- Upload image and data -->
   <div class="avatar-upload">
    <input type="hidden" class="avatar-src" name="avatar_src">
    <input type="hidden" class="avatar-data" name="ci">
    <label for="avatarInput" class="el-button el-button--primary">选择图片</label>
    <input type="file" class="avatar-input " style="visibility: hidden" id="avatarInput" name="file">
   </div>
   <!-- Crop and preview -->
   <el-row>
    <el-col :span="18">
    <div class="avatar-wrapper"></div>
    </el-col>
    <el-col :span="6" style="overflow: hidden;">
    <div style="padding-left: 10px">
     <div class="avatar-preview preview-lg" ></div>
     <div class="avatar-preview avatar-preview-round preview-md"></div>
    <!--<div class="avatar-preview preview-sm"></div>-->
    </div>
    </el-col>
   </el-row>
   <el-row class="avatar-btns">
    <el-col :span="18">
    <el-button-group>
     <button type="primary" class="el-button el-button--primary" data-method="rotate" data-option="-180" title="Rotate -180 degrees">-180deg</button>
     <button type="primary" class="el-button el-button--primary" data-method="rotate" data-option="-90" title="Rotate -90 degrees">-90deg</button>
     <button type="primary" class="el-button el-button--primary" data-method="rotate" data-option="-45" title="Rotate -45 degrees">-45deg</button>
     <button type="primary" class="el-button el-button--primary" data-method="rotate" data-option="45" title="Rotate 45 degrees">45deg</button>
     <button type="primary" class="el-button el-button--primary" data-method="rotate" data-option="90" title="Rotate 90 degrees">90deg</button>
     <button type="primary" class="el-button el-button--primary" data-method="rotate" data-option="180" title="Rotate 180 degrees">180deg</button>
    </el-button-group>
    </el-col>
    <el-col :span="6"></el-col>
   </el-row>
   <el-row>
    <!--<button type="submit" class="btn btn-primary btn-block avatar-save">裁取</button>-->
   </el-row>
   </div>
  </div>
  </form>
 </div>
 </div>
</template>

style:

<style rel="stylesheet/scss" lang='scss' scoped>
 /*@import "cropper/dist/cropper.css";*/
 /*!
 * Cropper v3.1.3
 * https://github.com/fengyuanchen/cropper
 *
 * Copyright (c) 2014-2017 Chen Fengyuan
 * Released under the MIT license
 *
 * Date: 2017-10-21T10:03:37.133Z
 */
 .avatar-wrapper{
 width: 100%;
 height: 100%;
 overflow: hidden;
 }
 .cropper-container {
 direction: ltr;
 font-size: 0;
 line-height: 0;
 position: relative;
 -ms-touch-action: none;
 touch-action: none;
 -webkit-user-select: none;
 -moz-user-select: none;
 -ms-user-select: none;
 user-select: none;
 }
 .cropper-container img {/*Avoid margin top issue (Occur only when margin-top <= -height)
 */
 display: block;
 height: 100%;
 image-orientation: 0deg;
 max-height: none !important;
 max-width: none !important;
 min-height: 0 !important;
 min-width: 0 !important;
 width: 100%;
 }
 .cropper-wrap-box,
 .cropper-canvas,
 .cropper-drag-box,
 .cropper-crop-box,
 .cropper-modal {
 bottom: 0;
 left: 0;
 position: absolute;
 right: 0;
 top: 0;
 }
 .cropper-wrap-box,
 .cropper-canvas {
 overflow: hidden;
 }
 .cropper-drag-box {
 background-color: #fff;
 opacity: 0;
 }
 .cropper-modal {
 background-color: #000;
 opacity: .5;
 }
 .cropper-view-box {
 display: block;
 height: 100%;
 outline-color: rgba(51, 153, 255, 0.75);
 outline: 1px solid #39f;
 overflow: hidden;
 width: 100%;
 }
 .cropper-dashed {
 border: 0 dashed #eee;
 display: block;
 opacity: .5;
 position: absolute;
 }
 .cropper-dashed.dashed-h {
 border-bottom-width: 1px;
 border-top-width: 1px;
 height: 33.33333%;
 left: 0;
 top: 33.33333%;
 width: 100%;
 }
 .cropper-dashed.dashed-v {
 border-left-width: 1px;
 border-right-width: 1px;
 height: 100%;
 left: 33.33333%;
 top: 0;
 width: 33.33333%;
 }
 .cropper-center {
 display: block;
 height: 0;
 left: 50%;
 opacity: .75;
 position: absolute;
 top: 50%;
 width: 0;
 }
 .cropper-center:before,
 .cropper-center:after {
 background-color: #eee;
 content: ' ';
 display: block;
 position: absolute;
 }
 .cropper-center:before {
 height: 1px;
 left: -3px;
 top: 0;
 width: 7px;
 }
 .cropper-center:after {
 height: 7px;
 left: 0;
 top: -3px;
 width: 1px;
 }
 .cropper-face,
 .cropper-line,
 .cropper-point {
 display: block;
 height: 100%;
 opacity: .1;
 position: absolute;
 width: 100%;
 }
 .cropper-face {
 background-color: #fff;
 left: 0;
 top: 0;
 }
 .cropper-line {
 background-color: #39f;
 }
 .cropper-line.line-e {
 cursor: e-resize;
 right: -3px;
 top: 0;
 width: 5px;
 }
 .cropper-line.line-n {
 cursor: n-resize;
 height: 5px;
 left: 0;
 top: -3px;
 }
 .cropper-line.line-w {
 cursor: w-resize;
 left: -3px;
 top: 0;
 width: 5px;
 }
 .cropper-line.line-s {
 bottom: -3px;
 cursor: s-resize;
 height: 5px;
 left: 0;
 }
 .cropper-point {
 background-color: #39f;
 height: 5px;
 opacity: .75;
 width: 5px;
 }
 .cropper-point.point-e {
 cursor: e-resize;
 margin-top: -3px;
 right: -3px;
 top: 50%;
 }
 .cropper-point.point-n {
 cursor: n-resize;
 left: 50%;
 margin-left: -3px;
 top: -3px;
 }
 .cropper-point.point-w {
 cursor: w-resize;
 left: -3px;
 margin-top: -3px;
 top: 50%;
 }
 .cropper-point.point-s {
 bottom: -3px;
 cursor: s-resize;
 left: 50%;
 margin-left: -3px;
 }
 .cropper-point.point-ne {
 cursor: ne-resize;
 right: -3px;
 top: -3px;
 }
 .cropper-point.point-nw {
 cursor: nw-resize;
 left: -3px;
 top: -3px;
 }
 .cropper-point.point-sw {
 bottom: -3px;
 cursor: sw-resize;
 left: -3px;
 }
 .cropper-point.point-se {
 bottom: -3px;
 cursor: se-resize;
 height: 20px;
 opacity: 1;
 right: -3px;
 width: 20px;
 }
 @media (min-width: 768px) {
 .cropper-point.point-se {
  height: 15px;
  width: 15px;
 }
 }
 @media (min-width: 992px) {
 .cropper-point.point-se {
  height: 10px;
  width: 10px;
 }
 }
 @media (min-width: 1200px) {
 .cropper-point.point-se {
  height: 5px;
  opacity: .75;
  width: 5px;
 }
 }
 .cropper-point.point-se:before {
 background-color: #39f;
 bottom: -50%;
 content: ' ';
 display: block;
 height: 200%;
 opacity: 0;
 position: absolute;
 right: -50%;
 width: 200%;
 }
 .cropper-invisible {
 opacity: 0;
 }
 .cropper-bg {
 background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAAA3NCSVQICAjb4U/gAAAABlBMVEXMzMz////TjRV2AAAACXBIWXMAAArrAAAK6wGCiw1aAAAAHHRFWHRTb2Z0d2FyZQBBZG9iZSBGaXJld29ya3MgQ1M26LyyjAAAABFJREFUCJlj+M/AgBVhF/0PAH6/D/HkDxOGAAAAAElFTkSuQmCC');
 }
 .cropper-hide {
 display: block;
 height: 0;
 position: absolute;
 width: 0;
 }
 .cropper-hidden {
 display: none !important;
 }
 .cropper-move {
 cursor: move;
 }
 .cropper-crop {
 cursor: crosshair;
 }
 .cropper-disabled .cropper-drag-box,
 .cropper-disabled .cropper-face,
 .cropper-disabled .cropper-line,
 .cropper-disabled .cropper-point {
 cursor: not-allowed;
 }
 .avatar-view {
 display: block;
 margin: 15% auto 5%;
 height: 220px;
 width: 220px;
 border: 3px solid #fff;
 border-radius: 5px;
 box-shadow: 0 0 5px rgba(0,0,0,.15);
 cursor: pointer;
 overflow: hidden;
 }
 .avatar-view img {
 width: 100%;
 }
 .avatar-body {
 padding-right: 15px;
 padding-left: 15px;
 }
 .avatar-upload {
 overflow: hidden;
 }
 .avatar-upload label {
 display: block;
 float: left;
 clear: left;
 width: 100px;
 }
 .avatar-upload input {
 display: block;
 margin-left: 110px;
 }
 .avatar-alert {
 margin-top: 10px;
 margin-bottom: 10px;
 }
 .avatar-wrapper {
 height: 364px;
 width: 100%;
 margin-top: 15px;
 box-shadow: inset 0 0 5px rgba(0,0,0,.25);
 background-color: #fcfcfc;
 overflow: hidden;
 }
 .avatar-wrapper img {
 display: block;
 height: auto;
 max-width: 100%;
 }
 .avatar-preview {
 float: left;
 margin-top: 15px;
 margin-right: 15px;
 border: 1px solid #eee;
 border-radius: 4px;
 background-color: #fff;
 overflow: hidden;
 }
 .avatar-preview:hover {
 border-color: #ccf;
 box-shadow: 0 0 5px rgba(0,0,0,.15);
 }
 .avatar-preview img {
 width: 100%;
 }
 .avatar-preview-round{
 border-radius: 50%;
 }
 .preview-lg {
 height: 184px;
 width: 184px;
 margin-top: 15px;
 }
 .preview-md {
 height: 100px;
 width: 100px;
 }
 .preview-sm {
 height: 50px;
 width: 50px;
 }
 @media (min-width: 992px) {
 .avatar-preview {
  float: none;
 }
 }
 .avatar-btns {
 margin-top: 30px;
 margin-bottom: 15px;
 }
 .avatar-btns .btn-group {
 margin-right: 5px;
 }
</style>

script:

<script>
 import $ from 'jquery'
 import 'cropper/dist/cropper.js'
 export default {
 props:{
  id:String
 },
 data(){
  return {
  $container:null,
  $avatarView:null,
  $avatarModal : null,
  $loading : null,
  $avatarForm : null,
  $avatarUpload : null,
  $avatarSrc : null,
  $avatarData : null,
  $avatarInput : null,
  $avatarSave: null,
  $avatarBtns : null,
  $avatarWrapper : null,
  $avatarPreview: null,
  support: {
  fileList: !!$('<input type="file">').prop('files'),
   blobURLs: !!window.URL && URL.createObjectURL,
   formData: !!window.FormData
  }
  }
 },
 created(){},
 mounted(){
  this.$container = $('#'+this.id);
  this.$avatarForm = this.$container.find('.avatar-form');
  this.$avatarUpload = this.$avatarForm.find('.avatar-upload');
  this.$avatarSrc = this.$avatarForm.find('.avatar-src');
  this.$avatarData = this.$avatarForm.find('.avatar-data');
  this.$avatarInput = this.$avatarForm.find('.avatar-input');
  this.$avatarSave = this.$avatarForm.find('.avatar-save');
  this.$avatarWrapper = this.$container.find('.avatar-wrapper');
  this.$avatarPreview = this.$container.find('.avatar-preview');
  this.$avatarBtns = this.$container.find('.avatar-btns');
  this.$nextTick(function () {
   this.init();
  })
 },
 methods:{
  init: function () {
  this.support.datauri = this.support.fileList && this.support.blobURLs;
  this.addListener();
//  this.startCropper();
  },
  addListener: function () {
  this.$avatarInput.on('change', $.proxy(this.change, this));
  this.$avatarForm.on('submit', $.proxy(this.submit, this));
  this.$avatarBtns.on('click', $.proxy(this.rotate, this));
  },
  initPreview: function () {
  var url = this.$avatar.attr('src');
  this.$avatarPreview.html('<img src="/UploadFiles/2021-04-02/' + url + '">


第三步：父组件引用子组件


用了element-ui中的 el-dialog组件，此时el-dialog组件为父组件


在父组件中引入子组件





import cropper from '@/components/Cropper/index'







template:





<template>
 <div class="app-main-content" >
 <el-dialog :visible.sync="showCropper" title="封面裁图" width="70%">
  <cropper id="avatarCrop" ref="cropper" @cropper-success="cropperSuccessHandle"></cropper>
  <span slot="footer" class="dialog-footer">
  <el-button @click="cancelCropper">取 消</el-button>
  <el-button type="primary" @click="toCropper">确 定</el-button>
  </span>
 </el-dialog>
 </div>





script：





import cropper from '@/components/Cropper/index'
export default {
 name: 'addNews',
 components:{
  cropper
 },
 data(){
  return {
  avatarUrl2: null,
  showCropper:false
  }
 },
 methods:{
  //隐藏裁剪框
  cancelCropper(){
  this.showCropper = false
  this.$refs.cropper.cropDone();
  },
  //父组件调用子组件裁剪方法
  toCropper(){
   this.$refs.cropper.submit();
  },
  //子组件裁剪方法成功执行后与父组件通信
  cropperSuccessHandle(data){
   //返回data
  this.showCropper = false
  this.avatarUrl2 = data.url
  }
 }
 }





本文结合element-ui，vue-cli,jquery,cropper.js,实现裁图组件的封装，先写到这啦，如果对你有帮助，还请点个赞噢！
广告合作：本站广告合作请联系QQ：858582 申请时备注：广告合作（否则不回）
免责声明：本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除！
www.wwsws.com 伏龙阁资源网
39,976影音资源
44,792技术资源
21,817软件资源
651,128站长资源

P70系列延期，华为新旗舰将在下月发布

3月20日消息，近期博主@数码闲聊站 透露，原定三月份发布的华为新旗舰P70系列延期发布，预计4月份上市。

而博主@定焦数码 爆料，华为的P70系列在定位上已经超过了Mate60，成为了重要的旗舰系列之一。它肩负着重返影像领域顶尖的使命。那么这次P70会带来哪些令人惊艳的创新呢？

根据目前爆料的消息来看，华为P70系列将推出三个版本，其中P70和P70 Pro采用了三角形的摄像头模组设计，而P70 Art则采用了与上一代P60 Art相似的不规则形状设计。这样的外观是否好看见仁见智，但辨识度绝对拉满。

更新日志

友情链接

杰晶网络 DDR爱好者之家 桃源资源网 杰网资源 富贵资源网 南强小屋 铁雪资源网 幽灵资源网 万梅资源网 狼山资源网 白云岛资源网 昆仑资源网 相思资源网 明霞山资源网 内蒙古资源网 黑松山资源网 茶园资源网 饿虎岗资源网 大旗谷资源网 常春岛资源网 岱庙资源网 兴国资源网 快活林资源网 蝙蝠岛资源网 帝王谷资源网 白云城资源网 伏龙阁资源网 清风细雨楼 天枫庄资源网 圆月山庄资源网 无争山庄资源网 神水资源网 移花宫资源网 神剑山庄资源网 无为清净楼资源网 金钱帮资源网 丐帮资源网 华山资源网 极乐门资源网 小李飞刀资源网 凤求凰客栈 风云阁资源网 金狮镖局 鸳鸯亭资源网 千金楼资源网 更多链接