<template>
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<div class="upload-box">
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<el-upload
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:id="uuid"
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action="#"
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:class="['upload', self_disabled ? 'disabled' : '', drag ? 'no-border' : '']"
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:multiple="false"
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:disabled="self_disabled"
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:show-file-list="false"
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:http-request="handleHttpUpload"
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:before-upload="beforeUpload"
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:on-success="uploadSuccess"
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:on-error="uploadError"
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:drag="drag"
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:accept="fileType.join(',')"
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>
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<template v-if="imageUrl">
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<img :src="imageUrl" class="upload-image" />
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<div class="upload-handle" @click.stop>
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<div v-if="!self_disabled" class="handle-icon" @click="editImg">
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<el-icon><Edit /></el-icon>
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<span>编辑</span>
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</div>
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<div class="handle-icon" @click="imgViewVisible = true">
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<el-icon><ZoomIn /></el-icon>
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<span>查看</span>
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</div>
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<div v-if="!self_disabled" class="handle-icon" @click="deleteImg">
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<el-icon><Delete /></el-icon>
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<span>删除</span>
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</div>
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</div>
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</template>
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<template v-else>
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<div class="upload-empty">
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<slot name="empty">
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<el-icon><Plus /></el-icon>
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<!-- <span>请上传图片</span> -->
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</slot>
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</div>
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</template>
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</el-upload>
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<div class="el-upload__tip">
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<slot name="tip"></slot>
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</div>
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<el-image-viewer v-if="imgViewVisible" :url-list="[imageUrl]" @close="imgViewVisible = false" />
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</div>
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</template>
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<script setup lang="ts" name="UploadImg">
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import { ref, computed, inject } from "vue";
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import { generateUUID } from "@/utils";
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import { uploadUserImg } from "@/api/modules/upload";
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import { ElNotification, formContextKey, formItemContextKey } from "element-plus";
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import type { UploadProps, UploadRequestOptions } from "element-plus";
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interface UploadFileProps {
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imageUrl: string; // 图片地址 ==> 必传
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api?: (params: any) => Promise<any>; // 上传图片的 api 方法，一般项目上传都是同一个 api 方法，在组件里直接引入即可 ==> 非必传
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drag?: boolean; // 是否支持拖拽上传 ==> 非必传（默认为 true）
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disabled?: boolean; // 是否禁用上传组件 ==> 非必传（默认为 false）
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fileSize?: number; // 图片大小限制 ==> 非必传（默认为 5M）
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fileType?: File.ImageMimeType[]; // 图片类型限制 ==> 非必传（默认为 ["image/jpeg", "image/png", "image/gif"]）
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height?: string; // 组件高度 ==> 非必传（默认为 150px）
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width?: string; // 组件宽度 ==> 非必传（默认为 150px）
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borderRadius?: string; // 组件边框圆角 ==> 非必传（默认为 8px）
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}
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// 接受父组件参数
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const props = withDefaults(defineProps<UploadFileProps>(), {
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imageUrl: "",
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drag: true,
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disabled: false,
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fileSize: 5,
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fileType: () => ["image/jpeg", "image/png", "image/gif"],
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height: "150px",
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width: "150px",
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borderRadius: "8px"
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});
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// 生成组件唯一id
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const uuid = ref("id-" + generateUUID());
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// 查看图片
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const imgViewVisible = ref(false);
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// 获取 el-form 组件上下文
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const formContext = inject(formContextKey, void 0);
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// 获取 el-form-item 组件上下文
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const formItemContext = inject(formItemContextKey, void 0);
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// 判断是否禁用上传和删除
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const self_disabled = computed(() => {
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return props.disabled || formContext?.disabled;
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});
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/**
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* @description 图片上传
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* @param options upload 所有配置项
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* */
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const emit = defineEmits<{
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"update:imageUrl": [value: string];
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}>();
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const handleHttpUpload = async (options: UploadRequestOptions) => {
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let formData = new FormData();
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formData.append("file", options.file);
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try {
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const api = props.api ?? uploadUserImg;
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const { data } = await api(formData);
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emit("update:imageUrl", data.fileUrl);
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// 调用 el-form 内部的校验方法（可自动校验）
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formItemContext?.prop && formContext?.validateField([formItemContext.prop as string]);
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} catch (error) {
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options.onError(error as any);
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}
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};
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/**
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* @description 删除图片
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* */
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const deleteImg = () => {
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emit("update:imageUrl", "");
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};
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/**
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* @description 编辑图片
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* */
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const editImg = () => {
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const dom = document.querySelector(`#${uuid.value} .el-upload__input`);
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dom && dom.dispatchEvent(new MouseEvent("click"));
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};
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/**
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* @description 文件上传之前判断
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* @param rawFile 选择的文件
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* */
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const beforeUpload: UploadProps["beforeUpload"] = rawFile => {
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const imgSize = rawFile.size / 1024 / 1024 < props.fileSize;
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const imgType = props.fileType.includes(rawFile.type as File.ImageMimeType);
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if (!imgType)
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ElNotification({
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title: "温馨提示",
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message: "上传图片不符合所需的格式！",
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type: "warning"
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});
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if (!imgSize)
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setTimeout(() => {
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ElNotification({
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title: "温馨提示",
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message: `上传图片大小不能超过 ${props.fileSize}M！`,
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type: "warning"
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});
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}, 0);
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return imgType && imgSize;
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};
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/**
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* @description 图片上传成功
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* */
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const uploadSuccess = () => {
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ElNotification({
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title: "温馨提示",
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message: "图片上传成功！",
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type: "success"
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});
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};
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/**
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* @description 图片上传错误
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* */
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const uploadError = () => {
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ElNotification({
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title: "温馨提示",
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message: "图片上传失败，请您重新上传！",
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type: "error"
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});
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};
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</script>
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<style scoped lang="scss">
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.is-error {
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.upload {
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:deep(.el-upload),
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:deep(.el-upload-dragger) {
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border: 1px dashed var(--el-color-danger) !important;
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&:hover {
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border-color: var(--el-color-primary) !important;
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}
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}
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}
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}
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:deep(.disabled) {
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.el-upload,
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.el-upload-dragger {
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cursor: not-allowed !important;
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background: var(--el-disabled-bg-color);
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border: 1px dashed var(--el-border-color-darker) !important;
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&:hover {
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border: 1px dashed var(--el-border-color-darker) !important;
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}
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}
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}
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.upload-box {
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.no-border {
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:deep(.el-upload) {
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border: none !important;
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}
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}
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:deep(.upload) {
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.el-upload {
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position: relative;
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display: flex;
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align-items: center;
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justify-content: center;
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width: v-bind(width);
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height: v-bind(height);
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overflow: hidden;
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border: 1px dashed var(--el-border-color-darker);
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border-radius: v-bind(borderRadius);
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transition: var(--el-transition-duration-fast);
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&:hover {
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border-color: var(--el-color-primary);
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.upload-handle {
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opacity: 1;
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}
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}
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.el-upload-dragger {
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display: flex;
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align-items: center;
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justify-content: center;
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width: 100%;
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height: 100%;
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padding: 0;
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overflow: hidden;
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background-color: transparent;
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border: 1px dashed var(--el-border-color-darker);
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border-radius: v-bind(borderRadius);
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&:hover {
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border: 1px dashed var(--el-color-primary);
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}
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}
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.el-upload-dragger.is-dragover {
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background-color: var(--el-color-primary-light-9);
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border: 2px dashed var(--el-color-primary) !important;
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}
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.upload-image {
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width: 100%;
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height: 100%;
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object-fit: contain;
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}
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.upload-empty {
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position: relative;
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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font-size: 12px;
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line-height: 30px;
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color: var(--el-color-info);
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.el-icon {
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font-size: 28px;
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color: var(--el-text-color-secondary);
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}
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}
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.upload-handle {
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position: absolute;
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top: 0;
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right: 0;
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box-sizing: border-box;
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display: flex;
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align-items: center;
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justify-content: center;
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width: 100%;
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height: 100%;
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cursor: pointer;
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background: rgb(0 0 0 / 60%);
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opacity: 0;
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transition: var(--el-transition-duration-fast);
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.handle-icon {
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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padding: 0 6%;
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color: aliceblue;
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.el-icon {
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margin-bottom: 40%;
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font-size: 130%;
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line-height: 130%;
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}
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span {
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font-size: 85%;
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line-height: 85%;
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}
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}
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}
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}
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}
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.el-upload__tip {
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line-height: 18px;
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text-align: center;
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}
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}
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</style>
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