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Backend API
<template>
<div class="widget-container flex-box">
<span>Profile Picture</span>
<div
id="dropzone-external"
class="flex-box"
:class="[isDropZoneActive
? 'dropzone-active'
: '']"
>
<img
id="dropzone-image"
:src="imageSource"
v-if="imageSource"
alt=""
>
<div
id="dropzone-text"
class="flex-box"
v-if="textVisible"
>
<span>Drag & Drop the desired file</span>
<span>…or click to browse for a file instead.</span>
</div>
<DxProgressBar
id="upload-progress"
:min="0"
:max="100"
width="30%"
:show-status="false"
:visible="progressVisible"
:value="progressValue"
/>
</div>
<DxFileUploader
id="file-uploader"
dialog-trigger="#dropzone-external"
drop-zone="#dropzone-external"
:multiple="false"
:allowed-file-extensions="allowedFileExtensions"
upload-mode="instantly"
upload-url="https://js.devexpress.com/Demos/NetCore/FileUploader/Upload"
:visible="false"
@drop-zone-enter="onDropZoneEnter"
@drop-zone-leave="onDropZoneLeave"
@uploaded="onUploaded"
@progress="onProgress"
@upload-started="onUploadStarted"
/>
</div>
</template>
<script setup lang="ts">
import { ref } from 'vue';
import { DxFileUploader, type DxFileUploaderTypes } from 'devextreme-vue/file-uploader';
import { DxProgressBar } from 'devextreme-vue/progress-bar';
const isDropZoneActive = ref(false);
const imageSource = ref('');
const textVisible = ref(true);
const progressVisible = ref(false);
const progressValue = ref(0);
const allowedFileExtensions = ['.jpg', '.jpeg', '.gif', '.png'];
function onDropZoneEnter({ component, dropZoneElement, event }: DxFileUploaderTypes.DropZoneEnterEvent) {
if (dropZoneElement.id === 'dropzone-external') {
const items = (event as any).originalEvent.dataTransfer.items;
const allowedFileExtensions = component.option('allowedFileExtensions');
const draggedFileExtension = `.${items[0].type.replace(/^image\//, '')}`;
const isSingleFileDragged = items.length === 1;
const isValidFileExtension = allowedFileExtensions.includes(draggedFileExtension);
if (isSingleFileDragged && isValidFileExtension) {
isDropZoneActive.value = true;
}
}
}
function onDropZoneLeave(e) {
if (e.dropZoneElement.id === 'dropzone-external') {
isDropZoneActive.value = false;
}
}
function onUploaded({ file }) {
const fileReader = new FileReader();
fileReader.onload = () => {
isDropZoneActive.value = false;
imageSource.value = fileReader.result as string;
};
fileReader.readAsDataURL(file);
textVisible.value = false;
progressVisible.value = false;
progressValue.value = 0;
}
function onProgress(e) {
progressValue.value = (e.bytesLoaded / e.bytesTotal) * 100;
}
function onUploadStarted() {
imageSource.value = '';
progressVisible.value = true;
}
</script>
<style>
#dropzone-external {
width: 350px;
height: 350px;
background-color: rgb(183 183 183 / 10%);
border-width: 2px;
border-style: dashed;
padding: 10px;
border-color: var(--dx-color-border);
}
#dropzone-external > * {
pointer-events: none;
}
#dropzone-external.dropzone-active {
border-style: solid;
border-color: var(--dx-color-primary);
}
.widget-container > span {
font-size: 22px;
font-weight: bold;
margin-bottom: 16px;
}
#dropzone-image {
max-width: 100%;
max-height: 100%;
}
#dropzone-text > span {
font-weight: 100;
opacity: 0.5;
}
#upload-progress {
display: flex;
margin-top: 10px;
}
.flex-box {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
}
</style>
window.exports = window.exports || {};
window.config = {
transpiler: 'plugin-babel',
meta: {
'*.vue': {
loader: 'vue-loader',
},
'*.ts': {
loader: 'demo-ts-loader',
},
'*.svg': {
loader: 'svg-loader',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
'openai': {
'esModule': true,
},
},
paths: {
'project:': '../../../../',
'npm:': 'https://cdn.jsdelivr.net/npm/',
'bundles:': '../../../../bundles/',
'externals:': '../../../../bundles/externals/',
},
map: {
'vue': 'npm:vue@3.4.27/dist/vue.esm-browser.js',
'@vue/shared': 'npm:@vue/shared@3.4.27/dist/shared.cjs.prod.js',
'vue-loader': 'npm:dx-systemjs-vue-browser@1.1.2/index.js',
'demo-ts-loader': 'project:utils/demo-ts-loader.js',
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'svg-loader': 'project:utils/svg-loader.js',
'mitt': 'npm:mitt/dist/mitt.umd.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign',
'devextreme': 'npm:devextreme@24.2.7/cjs',
'devextreme-vue': 'npm:devextreme-vue@24.2.7/cjs',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.16/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.60/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'devextreme-vue': {
main: 'index.js',
},
'devextreme': {
defaultExtension: 'js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/common/core/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.12/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
},
};
System.config(window.config);
import { createApp } from 'vue';
import App from './App.vue';
createApp(App).mount('#app');
<!DOCTYPE html>
<html lang="en">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.2.7/css/dx.light.css" />
<script src="https://cdn.jsdelivr.net/npm/typescript@5.4.5/lib/typescript.js"></script>
<script type="module">
import * as vueCompilerSFC from "https://cdn.jsdelivr.net/npm/@vue/compiler-sfc@3.4.27/dist/compiler-sfc.esm-browser.js";
window.vueCompilerSFC = vueCompilerSFC;
</script>
<script src="https://cdn.jsdelivr.net/npm/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import("./index.ts");
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"> </div>
</div>
</body>
</html>
NOTE
Allowed file extensions: .jpg, .jpeg, .gif, .png
Maximum file size: 4 MB