vue3-barcode-qrcode-reader

Vue3 Barcode and QR code scanner

A Vue.js set of components to scan barcodes and QR codes.

Benefits

• Can scan both barcodes and QR codes
• Uses ZXing ("zebra crossing"), an open-source, multi-format 1D/2D barcode image processing library implemented in Java, with ports to other languages.

Demo

Codesandbox

Installation

The easiest way to use Vue Barcode Reader is to install it from npm or yarn.

npm install vue3-barcode-qrcode-reader --save

Or

yarn add vue3-barcode-qrcode-reader

Vue 2.0 support

For Vue 2.0 compatible version please use the vue-barcode-reader.

Usage

The Vue3 Barcode and QR code scanner works out of the box by just including it.

Using Video Camera

Once a stream from the users camera is loaded, it's displayed and continuously scanned for barcodes. Results are indicated by the decode event.

import { StreamQrcodeBarcodeReader, IconCameraVue } from 'vue-barcode-reader'

In your template you can use this syntax:

<StreamQrcodeBarcodeReader
  capture="shoot"
  @loaded="onLoaded"
  @onloading="onLoading"
  @result="onResult"
/>

Implementation with slot

<StreamQrcodeBarcodeReader
  capture="shoot"
  @onloading="onLoading"
  @result="onResult"
  class="rounded-2xl"
>
  <template #actions="{ onCanPlay, isReset, onReset }">
    <button class="bg-green-300 px-6 py-1 rounded-md" @click="onCanPlay">Stream</button>
    <button v-if="isReset" class="bg-blue-300 px-6 py-1 rounded-md ms-2" @click="onReset()">
      Reset
    </button>
  </template>

  <template #action-stop="{ onCanStop }">
    <div class="container-btn-stop">
      <button class="bg-pink-300 px-6 py-1 rounded-md" @click="onCanStop()">Stop</button>
    </div>
  </template>

  <template #action-facemode="{ onChangeFacemode }">
    <div class="container-btn-facemode">
      <button
        class="bg-red-300 w-10 h-10 p-2 inline-flex justify-center items-center rounded-full"
        @click="onChangeFacemode"
      >
        <IconCameraVue />
      </button>
    </div>
  </template>
</StreamQrcodeBarcodeReader>

Props

Parameter	value	Type	Description
capture	"shoot" or "stream"	emun	Props capture

shoot

When the barcode or QR code is successfully scanned, the scanning process will stop.

strean

When the barcode or QR code is successfully scanned, the scanning process will not stop.

---

Slot

Parameter	value	Type	Description
#actions	{onCanPlay, isReset, onReset }	func & boolean & func	onCanPlay func for start stream camera & isReset state for handle show or hide button reset & onReset func for handle reset value Result
#action-stop	{onCanStop}	func	function for hanlde stop stream camera
#action-facemode	{onChangeFacemode}	func	function for hanlde switch camera on mobile

Events

The library emits the following events:

Parameter	type
loaded	function
onloading	function(payload)
result	function(payload)

loaded

When the libraty is loaded and the camera is ready to scan

onloading

for get value loading from component.

.js

const isLoading = ref(false)
function onLoading(loading) {
  isLoading.value = loading
}

.ts

const isLoading = ref<boolean>(false)
function onLoading(loading: boolean) {
  isLoading.value = loading
}

result

When a barcode or QR code is scanned. The result is passed as a parameter to the event handler. The result is the object with the following properties:

//example
{
    "text": "9578545203541",
    "rawBytes": null,
    "numBits": 0,
    "resultPoints": [
        {
            "x": 29.5,
            "y": 1016
        },
        {
            "x": 394.5,
            "y": 1016
        }
    ],
    "format": 7,
    "timestamp": 1700195512963,
    "resultMetadata": null
}

If you want to implement it in your code, you can follow this example:

.js

const resultScan = ref(undefined)
function onResult(result) {
  resultScan.value = result
}

.ts

import { Result } from 'vue-barcode-reader'
const resultScan = ref<Result | undefined>(undefined)
function onResult(result: Result | undefined) {
  resultScan.value = result
}

<!-- result automaticly "text": "9578545203541" not object like example on top -->
<p>{{ resultScan }}</p>
<!-- note: if you want properties like the example above, you can assign the properties one by one in the variable-->