Custom Drop Zone
The FileUploader component supports the drag-and-drop functionality to upload files.
In this demo, the dropZone property specifies the HTML element in which you can drag and drop files for upload. The dropZoneEnter and dropZoneLeave events allow you to customize the drop zone when the mouse pointer enters and leaves this zone while dragging the file.
NOTEAllowed file extensions: .jpg, .jpeg, .gif, .pngMaximum file size: 4 MB
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
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We appreciate your feedback.
<template>
<div class="widget-container flex-box">
<span>Profile Picture</span>
<div
id="dropzone-external"
class="flex-box"
:class="[isDropZoneActive ? 'dx-theme-accent-as-border-color dropzone-active' : 'dx-theme-border-color']"
>
<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>
import { DxFileUploader } from 'devextreme-vue/file-uploader';
import { DxProgressBar } from 'devextreme-vue/progress-bar';
export default {
components: {
DxFileUploader,
DxProgressBar
},
data() {
return {
isDropZoneActive: false,
imageSource: '',
textVisible: true,
progressVisible: false,
progressValue: 0,
allowedFileExtensions: ['.jpg', '.jpeg', '.gif', '.png']
};
},
methods: {
onDropZoneEnter(e) {
if(e.dropZoneElement.id === 'dropzone-external') {
this.isDropZoneActive = true;
}
},
onDropZoneLeave(e) {
if(e.dropZoneElement.id === 'dropzone-external') {
this.isDropZoneActive = false;
}
},
onUploaded(e) {
const file = e.file;
const fileReader = new FileReader();
fileReader.onload = () => {
this.isDropZoneActive = false;
this.imageSource = fileReader.result;
};
fileReader.readAsDataURL(file);
this.textVisible = false;
this.progressVisible = false;
this.progressValue = 0;
},
onProgress(e) {
this.progressValue = e.bytesLoaded / e.bytesTotal * 100;
},
onUploadStarted() {
this.imageSource = '';
this.progressVisible = true;
}
}
};
</script>
<style>
#dropzone-external {
width: 350px;
height: 350px;
background-color: rgba(183, 183, 183, 0.1);
border-width: 2px;
border-style: dashed;
padding: 10px;
}
#dropzone-external > * {
pointer-events: none;
}
#dropzone-external.dropzone-active {
border-style: solid;
}
.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>
import { createApp } from 'vue';
import App from './App.vue';
createApp(App).mount('#app');
<!DOCTYPE html>
<html>
<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=1.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import('./index.js');
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app">
</div>
</div>
</body>
</html>
System.config({
transpiler: 'plugin-babel',
meta: {
'*.vue': {
loader: 'vue-loader'
},
'devextreme/localization.js': {
"esModule": true
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
'vue': 'npm:vue@3.0.0/dist/vue.esm-browser.js',
'vue-loader': 'npm:dx-systemjs-vue-browser@1.0.15/index.js',
'mitt': 'npm:mitt/dist/mitt.umd.js',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.26.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.6',
'devextreme-vue': 'npm:devextreme-vue@20.2.6',
'jszip': 'npm:jszip@3.6.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.10.3/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.18/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.24/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.13/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.13/hooks/dist/hooks.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'
},
packages: {
'devextreme-vue': {
main: 'index.js'
},
'devextreme': {
defaultExtension: 'js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true
}
});