4dkankan-components/docs/examples-bk/upload/custom-thumbnail.vue

<template>
    <el-upload action="#" list-type="picture-card" :auto-upload="false">
        <el-icon><Plus /></el-icon>

        <template #file="{ file }">
            <div>
                <img class="el-upload-list__item-thumbnail" :src="file.url" alt="" />
                <span class="el-upload-list__item-actions">
                    <span class="el-upload-list__item-preview" @click="handlePictureCardPreview(file)">
                        <el-icon><zoom-in /></el-icon>
                    </span>
                    <span v-if="!disabled" class="el-upload-list__item-delete" @click="handleDownload(file)">
                        <el-icon><Download /></el-icon>
                    </span>
                    <span v-if="!disabled" class="el-upload-list__item-delete" @click="handleRemove(file)">
                        <el-icon><Delete /></el-icon>
                    </span>
                </span>
            </div>
        </template>
    </el-upload>

    <el-dialog v-model="dialogVisible">
        <img w-full :src="dialogImageUrl" alt="Preview Image" />
    </el-dialog>
</template>
<script lang="ts" setup>
import { ref } from 'vue'
import { Delete, Download, Plus, ZoomIn } from '@element-plus/icons-vue'

import type { UploadFile } from 'element-plus'

const dialogImageUrl = ref('')
const dialogVisible = ref(false)
const disabled = ref(false)

const handleRemove = (file: UploadFile) => {
    console.log(file)
}

const handlePictureCardPreview = (file: UploadFile) => {
    dialogImageUrl.value = file.url!
    dialogVisible.value = true
}

const handleDownload = (file: UploadFile) => {
    console.log(file)
}
</script>