官网:
https://github.com/xyxiao001/vue-cropper
一、安装:
npm install vue-cropper
或者
yarn add vue-cropper
二、使用:
import VueCropper from 'vue-cropper'
设置component
:
export default {
components: {
VueCropper
}
}
template
中插入:(外面需要套一个div,用于设置插件显示的大小)
<vueCropper
ref="cropper"
:img="option.img"
:outputSize="option.size"
:outputType="option.outputType"
></vueCropper>
data(){
return{
option:{
img: 'imgUrl', // img的URL或者base64
size: 1,
outputType: 'png',
}
}
}
三、内置方法:
名称 | 功能 | 默认值 | 可选值 |
---|---|---|---|
img | 裁剪图片的地址 | 空 | url 地址 / base64 / blob |
outputSize | 裁剪生成图片的质量 | 1 | 0.1 - 1 |
outputType | 裁剪图片的地址 | jpg (jpg 需要传入jpeg) | jpeg / png / web |
内置方法:通过this.$refs.cropper
调用插件。
this.$refs.cropper.startCrop()
开始截图(如果没有设置截图框的话,通过这个启动截图框)
this.$refs.cropper.stopCrop()
停止截图
this.$refs.cropper.clearCrop()
清除截图
this.$refs.cropper.getCropData()
获取截图信息(得到截图的URL或者base64)
// 获取截图的base64 数据
this.$refs.cropper.getCropData((data) => {
// do something
console.log(data)
})
// 获取截图的blob数据
this.$refs.cropper.getCropBlob((data) => {
// do something
console.log(data)
})
四、使用:
<template>
<div>
<el-dialog title="图片剪裁" :visible.sync="show" append-to-body width="950px" center>
<div class="cropper-content">
<div class="cropper-box">
<div class="cropper">
<vue-cropper ref="cropper" :img="option.img" :outputSize="option.outputSize" :outputType="option.outputType" :info="option.info" :canScale="option.canScale" :autoCrop="option.autoCrop" :autoCropWidth="option.autoCropWidth" :autoCropHeight="option.autoCropHeight" :fixed="option.fixed" :fixedNumber="option.fixedNumber" :full="option.full" :fixedBox="option.fixedBox" :canMove="option.canMove" :canMoveBox="option.canMoveBox" :original="option.original" :centerBox="option.centerBox" :height="option.height" :infoTrue="option.infoTrue" :maxImgSize="option.maxImgSize" :enlarge="option.enlarge" :mode="option.mode" @realTime="realTime" @imgLoad="imgLoad">
</vue-cropper>
</div>
<!--底部操作工具按钮-->
<div class="footer-btn">
<div class="scope-btn">
<label class="btn" for="uploads">选择图片</label>
<input type="file" id="uploads" style="position:absolute; clip:rect(0 0 0 0);" accept="image/png, image/jpeg, image/gif, image/jpg" @change="selectImg($event)">
<el-button size="mini" type="danger" plain icon="el-icon-zoom-in" @click="changeScale(1)">放大</el-button>
<el-button size="mini" type="danger" plain icon="el-icon-zoom-out" @click="changeScale(-1)">缩小</el-button>
<el-button size="mini" type="danger" plain @click="rotateLeft">↺ 左旋转</el-button>
<el-button size="mini" type="danger" plain @click="rotateRight">↻ 右旋转</el-button>
</div>
<div class="upload-btn">
<el-button size="mini" type="success" @click="uploadImg('blob')">上传图片 <i class="el-icon-upload"></i></el-button>
</div>
</div>
</div>
<!--预览效果图-->
<div class="show-preview">
<div :style="previews.div" class="preview">
<img :src="previews.url" :style="previews.img">
</div>
</div>
</div>
</el-dialog>
</div>
</template>
<script>
import { VueCropper } from 'vue-cropper'
export default {
name: "CropperImage",
components: {
VueCropper
},
data () {
return {
show: this.visible,
name: this.Name,
previews: {},
option: {
img: '', //裁剪图片的地址
outputSize: 1, //裁剪生成图片的质量(可选0.1 - 1)
outputType: 'jpeg', //裁剪生成图片的格式(jpeg || png || webp)
info: true, //裁剪框的大小信息,图片大小信息
canScale: true, //图片是否允许滚轮缩放
autoCrop: true, //是否默认生成截图框
autoCropWidth: 300, //默认生成截图框宽度
autoCropHeight: 200, //默认生成截图框高度
fixed: true, //是否开启截图框宽高固定比例
fixedNumber: [1.5, 1], //截图框的宽高比例
full: true, //false按原比例裁切图片,不失真
fixedBox: true, //固定截图框大小,不允许改变
canMove: false, //上传图片是否可以移动
canMoveBox: true, //截图框能否拖动
original: false, //上传图片按照原始比例渲染
centerBox: false, //截图框是否被限制在图片里面
height: true, //是否按照设备的dpr 输出等比例图片
infoTrue: false, //true为展示真实输出图片宽高,false展示看到的截图框宽高
maxImgSize: 3000, //限制图片最大宽度和高度
enlarge: 1, //图片根据截图框输出比例倍数
mode: '230px 150px' //图片默认渲染方式
}
};
},
props: {
visible: {
type: Boolean,
default: false
},
Name: {
type: String,
default: ''
}
},
watch: {
visible () {
this.show = this.visible
}
},
methods: {
//初始化函数
imgLoad (msg) {
},
//图片缩放
changeScale (num) {
num = num || 1
this.$refs.cropper.changeScale(num)
},
//向左旋转
rotateLeft () {
this.$refs.cropper.rotateLeft()
},
//向右旋转
rotateRight () {
this.$refs.cropper.rotateRight()
},
//实时预览函数
realTime (data) {
this.previews = data
},
//选择图片
selectImg (e) {
let file = e.target.files[0]
if (!/\.(jpg|jpeg|png|JPG|PNG)$/.test(e.target.value)) {
this.$message({
message: '图片类型要求:jpeg、jpg、png',
type: "error"
});
return false
}
//转化为blob
let reader = new FileReader()
reader.onload = (e) => {
let data
if (typeof e.target.result === 'object') {
data = window.URL.createObjectURL(new Blob([e.target.result]))
} else {
data = e.target.result
}
this.option.img = data
}
//转化为base64
reader.readAsDataURL(file)
},
//上传图片
uploadImg (type) {
let _this = this
if (type === 'blob') {
// 获取截图的blob数据
this.$refs.cropper.getCropBlob(async (data) => {
let formData = new FormData();
formData.append('file', data, new Date().getTime() + '.png')
// 调用axios上传
let { data: res } = await _this.$http.post(`${msBaseUrl}common-tools-web/file/upload/image`, formData)
if (res.code === 200) {
_this.$message({
message: res.desc,
type: "success"
});
let data = res.result
let imgInfo = {
name: data.name,
id: data.id,
url: data.url
};
_this.$emit('uploadImgSuccess', imgInfo);
} else {
_this.$message({
message: '文件服务异常,请联系管理员!',
type: "error"
})
}
})
}
}
}
}
</script>
<style scoped lang="less">
.cropper-content {
display: flex;
display: -webkit-flex;
justify-content: flex-end;
.cropper-box {
flex: 1;
width: 100%;
.cropper {
width: auto;
height: 300px;
}
}
.show-preview {
flex: 1;
-webkit-flex: 1;
display: flex;
display: -webkit-flex;
justify-content: center;
.preview {
overflow: hidden;
border: 1px solid #67c23a;
background: #cccccc;
}
}
}
.footer-btn {
margin-top: 30px;
display: flex;
display: -webkit-flex;
justify-content: flex-end;
.scope-btn {
display: flex;
display: -webkit-flex;
justify-content: space-between;
padding-right: 10px;
}
.upload-btn {
flex: 1;
-webkit-flex: 1;
display: flex;
display: -webkit-flex;
justify-content: center;
}
.btn {
outline: none;
display: inline-block;
line-height: 1;
white-space: nowrap;
cursor: pointer;
-webkit-appearance: none;
text-align: center;
-webkit-box-sizing: border-box;
box-sizing: border-box;
outline: 0;
-webkit-transition: 0.1s;
transition: 0.1s;
font-weight: 500;
padding: 8px 15px;
font-size: 12px;
border-radius: 3px;
color: #fff;
background-color: #409eff;
border-color: #409eff;
margin-right: 10px;
}
}
</style>
效果:
总结
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