userAvatar.vue
<template>
<div class="user-info-head" @click="editCropper()">
<img :src="options.img" title="点击上传头像" class="img-circle img-lg" />
<el-dialog
:title="title"
v-model="open"
width="800px"
append-to-body
@opened="modalOpened"
@close="closeDialog"
>
<el-row>
<el-col :xs="24" :md="12" :style="{ height: '350px' }">
<vue-cropper
ref="cropper"
:img="options.img"
:info="true"
:autoCrop="options.autoCrop"
:autoCropWidth="options.autoCropWidth"
:autoCropHeight="options.autoCropHeight"
:fixedBox="options.fixedBox"
:outputType="options.outputType"
@realTime="realTime"
v-if="visible"
/>
</el-col>
<el-col :xs="24" :md="12" :style="{ height: '350px' }">
<div class="avatar-upload-preview">
<img :src="options.previews.url" :style="options.previews.img" />
</div>
</el-col>
</el-row>
<br />
<el-row>
<el-col :lg="2" :md="2">
<el-upload
action="#"
:http-request="requestUpload"
:show-file-list="false"
:before-upload="beforeUpload"
>
<el-button>
选择
<el-icon class="el-icon--right"><Upload /></el-icon>
</el-button>
</el-upload>
</el-col>
<el-col :lg="{ span: 1, offset: 2 }" :md="2">
<el-button icon="Plus" @click="changeScale(1)"></el-button>
</el-col>
<el-col :lg="{ span: 1, offset: 1 }" :md="2">
<el-button icon="Minus" @click="changeScale(-1)"></el-button>
</el-col>
<el-col :lg="{ span: 1, offset: 1 }" :md="2">
<el-button icon="RefreshLeft" @click="rotateLeft()"></el-button>
</el-col>
<el-col :lg="{ span: 1, offset: 1 }" :md="2">
<el-button icon="RefreshRight" @click="rotateRight()"></el-button>
</el-col>
<el-col :lg="{ span: 2, offset: 6 }" :md="2">
<el-button type="primary" @click="uploadImg()">提 交</el-button>
</el-col>
</el-row>
</el-dialog>
</div>
</template>
<script setup>
import "vue-cropper/dist/index.css";
import { VueCropper } from "vue-cropper";
import { uploadAvatar } from "@/api/login";
import useUserStore from "@/store/modules/user";
const userStore = useUserStore();
const { proxy } = getCurrentInstance();
const open = ref(false);
const visible = ref(false);
const title = ref("修改头像");
//图片裁剪数据
const options = reactive({
img: userStore.avatar, // 裁剪图片的地址
autoCrop: true, // 是否默认生成截图框
autoCropWidth: 200, // 默认生成截图框宽度
autoCropHeight: 200, // 默认生成截图框高度
fixedBox: true, // 固定截图框大小 不允许改变
outputType: "png", // 默认生成截图为PNG格式
previews: {}, //预览数据
});
/** 编辑头像 */
function editCropper() {
open.value = true;
}
/** 打开弹出层结束时的回调 */
function modalOpened() {
nextTick(() => {
visible.value = true;
});
}
/** 覆盖默认上传行为 */
function requestUpload() {}
/** 向左旋转 */
function rotateLeft() {
proxy.$refs.cropper.rotateLeft();
}
/** 向右旋转 */
function rotateRight() {
proxy.$refs.cropper.rotateRight();
}
/** 图片缩放 */
function changeScale(num) {
num = num || 1;
proxy.$refs.cropper.changeScale(num);
}
/** 上传预处理 */
function beforeUpload(file) {
if (file.type.indexOf("image/") == -1) {
proxy.$modal.msgError(
"文件格式错误,请上传图片类型,如:JPG,PNG后缀的文件。"
);
} else {
const reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = () => {
options.img = reader.result;
};
}
}
/** 上传图片 */
function uploadImg() {
// 获取截图的 base64 数据
proxy.$refs.cropper.getCropData((data) => {
// let formData = new FormData();
// formData.append("avatarfile", data);
let img = new Image();
img.src = data;
img.onload = async () => {
let _data = compress(img);
// console.log(_data)
uploadAvatar({ avatar: _data }).then((response) => {
open.value = false;
options.img = response.data.avatar;
userStore.avatar = userStore.user.avatar = options.img;
userStore.saveUser(userStore.user);
proxy.$modal.msgSuccess("修改成功");
visible.value = false;
});
};
});
}
// 压缩图片
function compress(img) {
let canvas = document.createElement("canvas");
let ctx = canvas.getContext("2d");
// let initSize = img.src.length;
let width = img.width;
let height = img.height;
canvas.width = width;
canvas.height = height;
// 铺底色
ctx.fillStyle = "#fff";
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.drawImage(img, 0, 0, width, height);
// 进行压缩
let ndata = canvas.toDataURL("image/jpeg", 0.8);
return ndata;
}
/** 实时预览 */
function realTime(data) {
options.previews = data;
}
/** 关闭窗口 */
function closeDialog() {
options.img = userStore.avatar;
options.visible = false;
}
</script>
<style lang="scss" scoped>
.user-info-head {
position: relative;
display: inline-block;
height: 120px;
}
.user-info-head:hover:after {
content: "+";
position: absolute;
left: 0;
right: 0;
top: 0;
bottom: 0;
color: #eee;
background: rgba(0, 0, 0, 0.5);
font-size: 24px;
font-style: normal;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
cursor: pointer;
line-height: 110px;
border-radius: 50%;
}
</style>