New scanners added: Chrome + Smart Phone with JS library
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{% extends "base.html" %}
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{% load static %}
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{% block additional_css %}
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<link rel="preload" as="style" onload="this.rel='stylesheet';this.onload=null" href="https://unpkg.com/normalize.css@8.0.0/normalize.css">
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<link rel="preload" as="style" onload="this.rel='stylesheet';this.onload=null" href="https://unpkg.com/milligram@1.3.0/dist/milligram.min.css">
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{% endblock %}
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{% block title %}Smartphone Scanner{% endblock %}
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{% block content %}
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<div class="container" >
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<div class="row-mb8" id="video-button-content">
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<a class="button" id="startButton">Start</a>
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<a class="button-outline" id="resetButton">Reset</a>
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</div>
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<div class="row" id="video-content">
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<div class="col-6">
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<video id="video" width="450" height="320" style="border: 1px solid gray"></video>
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</div>
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<div class="col-2" id="sourceSelectPanel" style="display:none">
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<label for="sourceSelect">Change video source:</label>
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<select id="sourceSelect" style="max-width:400px">
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</select>
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</div>
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<div class="col-2">
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<label>Result:</label>
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<pre><code id="result"></code></pre>
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<ul id="barcode-list"></ul>
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</div>
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</div>
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</div>
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<script type="text/javascript">
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function beep() {
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var audio = new Audio("{% static 'sound/beep.mp3' %}");
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audio.volume = 0.1
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console.log("Audio play {% static 'sound/beep.mp3' %}")
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audio.play();
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}
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// check compatibility
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if (!('BarcodeDetector' in window)) {
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console.log('Barcode Detector is not supported by this browser.');
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} else {
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console.log('Barcode Detector supported!');
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// create new detector
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// var barcodeDetector = new BarcodeDetector({formats: ['code_128', 'code_39', 'code_93', 'codabar', 'data_matrix', 'ean_13', 'ean_8', 'qr_code', 'upc_a', 'upc_e']});
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var barcodeDetector = new BarcodeDetector({formats: ['code_128', 'ean_13']});
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console.log('Supported code formats:');
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BarcodeDetector.getSupportedFormats().then(supportedFormats => {
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supportedFormats.forEach(format => console.log(format));
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});
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console.log('end-of-format-list');
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}
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async function detect() {
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const mediaStream = await navigator.mediaDevices.getUserMedia({
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video: {facingMode: 'environment'}
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});
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const video = document.getElementById('video');
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// const video = document.createElement('video');
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let itemsFound = [];
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video.srcObject = mediaStream;
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video.autoplay = true;
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const list = document.getElementById('barcode-list');
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// list.before(video);
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function render() {
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barcodeDetector
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.detect(video)
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.then(barcodes => {
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barcodes.forEach(barcode => {
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if (!itemsFound.includes(barcode.rawValue)) {
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itemsFound.push(barcode.rawValue);
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const li = document.createElement('li');
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li.innerHTML = barcode.rawValue;
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list.appendChild(li);
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console.log('Got scan ' + barcode.rawValue);
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}
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});
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// beep();
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})
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.catch(console.error);
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}
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(function renderLoop() {
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requestAnimationFrame(renderLoop);
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render();
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})();
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}
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window.addEventListener('load', function () {
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detect();
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document.getElementById('resetButton').addEventListener('click', () => {
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document.getElementById('result').textContent = '';
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codeReader.reset();
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console.log('Reset.')
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});
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});
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</script>
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<hr />
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<div class="row mb-3">
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<div class="col-8">
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<div class="input-group">
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<input class="form-control" type="text" maxlength="40" id="container_id" placeholder="Container ID">
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<input class="form-control" type="text" maxlength="40" id="asset_id" placeholder="Asset ID">
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</div>
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</div>
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<div class="col-2">
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<div class="input-group">
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<input class="btn btn-primary" id="book-in-button" type="button" value="+Book">
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<input class="btn btn-primary" id="book-out-button" type="button" value="-Book">
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</div>
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</div>
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<div class="col-8">
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<div class="input-group">
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<textarea class="form-control" readonly="readonly" rows="4" id="container_details"></textarea>
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<textarea class="form-control" readonly="readonly" rows="4" id="asset_details"></textarea>
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</div>
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</div>
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</div>
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<div class="row">
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<div class="input-group">
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<textarea class="form-control mb-2" id="chat-log" cols="100" rows="10"></textarea>
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<input class="btn btn-secondary" id="clear-chat-area" type="button" value="Clear">
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</div>
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</div>
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<script>
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var containerIsValid = false;
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var assetIsValid = false;
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async function getContainerInfo(containerId) {
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document.querySelector('#container_id').value = containerId;
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url = '/api/containers?named_id=' + containerId;
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document.querySelector('#container_details').value = 'Trying ' + url;
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const response = await fetch(url);
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const container = await response.json();
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if (container.count >= 1) {
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document.querySelector('#container_details').value = container.results[0].description;
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containerIsValid = true;
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} else {
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document.querySelector('#container_details').value = document.querySelector('#container_details').value + "\nERROR: No result\n";
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console.log(response);
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containerIsValid = false;
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}
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}
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async function getAssetInfo(assetId) {
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document.querySelector('#asset_id').value = assetId;
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url = '/api/assets?named_id=' + assetId;
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document.querySelector('#asset_details').value = 'Trying ' + url;
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const response = await fetch(url);
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const asset = await response.json();
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if (asset.count >= 1) {
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document.querySelector('#asset_details').value = asset.results[0].description;
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assetIsValid = true;
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} else {
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document.querySelector('#asset_details').value = document.querySelector('#asset_details').value + "\nERROR: No result\n";
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console.log(response);
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assetIsValid = false;
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}
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}
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function useScannedText(msg) {
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// const data = JSON.parse(e.data);
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// msg = String(data.message);
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document.querySelector('#chat-log').value += (msg + '\n');
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if (msg.startsWith('C-')) {
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getContainerInfo(data.message);
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// document.querySelector('#container_id').value = msg;
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} else if (msg.startsWith('A-')) {
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getAssetInfo(data.message);
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// document.querySelector('#asset_id').value = msg;
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} else {
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assetId = 'A-' + msg;
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document.querySelector('#asset_id').value = assetId;
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getAssetInfo(assetId);
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}
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};
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document.querySelector('#clear-chat-area').onclick = function(e) {
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document.querySelector('#chat-log').value = "cleared\n";
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}
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document.querySelector('#book-in-button').onclick = function(e) {
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if (!containerIsValid) {
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msg = 'Cannot book-in as container is invalid';
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console.log(msg);
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document.querySelector('#chat-log').value += ('ERROR: ' + msg + '\n');
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return;
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}
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if (!assetIsValid) {
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msg = 'Cannot book-in as asset is invalid';
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console.log(msg);
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document.querySelector('#chat-log').value += ('ERROR: ' + msg + '\n');
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return;
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}
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}
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document.querySelector('#book-out-button').onclick = function(e) {
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if (!containerIsValid) {
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msg = 'Cannot book-out as container is invalid';
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console.log(msg);
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document.querySelector('#chat-log').value += ('ERROR: ' + msg + '\n');
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return;
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}
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if (!assetIsValid) {
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msg = 'Cannot book-out as asset is invalid';
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console.log(msg);
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document.querySelector('#chat-log').value += ('ERROR: ' + msg + '\n');
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return;
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}
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}
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</script>
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{% endblock %}
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@ -56,7 +56,8 @@
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</div>
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<div class="row">
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<h1>Use your smartphone</h1>
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<p>Use your <a class="navbar-brand" href="{% url 'booker:smartphone_scanner' %}">smartphone</a> to scan.</p>
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<p>Use your <a href="{% url 'booker:smartphone_scanner' %}">smartphone</a> to scan.</p>
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<p>Use your <a href="{% url 'booker:chrome_scanner' %}">chrome Barcode-Scanner to scan.</p>
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</div>
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</div>
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{% endblock %}
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@ -2,118 +2,223 @@
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{% load static %}
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{% block additional_css %}
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<link rel="preload" as="style" onload="this.rel='stylesheet';this.onload=null" href="https://unpkg.com/normalize.css@8.0.0/normalize.css">
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<link rel="preload" as="style" onload="this.rel='stylesheet';this.onload=null" href="https://unpkg.com/milligram@1.3.0/dist/milligram.min.css">
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{% endblock %}
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{% block title %}Smartphone Scanner{% endblock %}
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{% block content %}
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<div class="container" >
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<style>
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#interactive canvas { position: absolute; left: 0; }
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</style>
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<div class="row-mb8" id="video-button-content">
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<a class="button" id="startButton">Start</a>
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<a class="button-outline" id="resetButton">Reset</a>
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<div class="container" >
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<div class="row" id="video-button-content">
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<div class="col-1">
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<a class="btn btn-primary" id="startButton">Start</a>
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</div>
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<div class="col-1">
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<a class="btn btn-outline-primary" id="resetButton">Reset</a>
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</div>
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<div class="col-1">
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<a class="btn btn-outline-primary" id="clearOverlayButton">Clear</a>
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</div>
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</div>
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<div class="row" id="video-content">
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<div class="col-6">
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<video id="video" width="450" height="320" style="border: 1px solid gray"></video>
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<div id="interactive" class="viewport col-12" style="position: relative;">
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<!-- QuaggaJS will populate this element -->
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</div>
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<div class="col-2" id="sourceSelectPanel" style="display:none">
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<label for="sourceSelect">Change video source:</label>
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<select id="sourceSelect" style="max-width:400px">
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</select>
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<!--
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<div class="col-8">
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<video id="video" autoplay="true" width="640" height="480" style="border: 1px solid gray"></video>
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</div>-->
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</div>
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<div class="row" id="control-content">
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<div class="col-6" id="sourceSelectPanel" style="display:none">
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<div>
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<label for="sourceSelect">Change video source:</label>
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<select id="sourceSelect" style="max-width:400px"></select>
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</div>
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</div>
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<div class="col-2">
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<label>Result:</label>
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<pre><code id="result"></code></pre>
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<div class="col-6" id="scan-result-panel" style="display:none">
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<div>
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<label>Scan:</label>
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<pre><code id="result"></code></pre>
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</div>
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</div>
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</div>
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</div>
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<script type="text/javascript" src="https://unpkg.com/@zxing/library@latest"></script>
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<script type="text/javascript">
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function beep() {
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var audio = new Audio("{% static 'sound/beep.mp3' %}");
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audio.volume = 0.1
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console.log("Audio play {% static 'sound/beep.mp3' %}")
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audio.play();
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<script type="text/javascript" src="{% static 'quagga/dist/quagga.js' %}"></script>
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<script type="text/javascript">
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function beep() {
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var audio = new Audio("{% static 'sound/beep.mp3' %}");
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audio.volume = 0.02;
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console.log("Audio play {% static 'sound/beep.mp3' %}");
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audio.play();
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}
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function clearCanvas() {
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canvas = document.querySelector('#interactive .drawingBuffer');
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drawing = (canvas != null) ? canvas.getContext('2d') : null;
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console.log('Clearing canvas, drawing=' + drawing + ', canvas=' + canvas);
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if (drawing != null) {
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drawing.clearRect(0, 0, canvas.width, canvas.height);
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console.log('Clearing done');
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}
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}
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console.log('detected HW concurrency: ' + self.navigator.hardwareConcurrency);
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window.addEventListener('load', function () {
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let selectedDeviceId;
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let lastScanResult = '';
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let config = {
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inputStream: {
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name: "Live",
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type: "LiveStream",
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constraints: {
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facingMode: "environment",
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},
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target: document.getElementById('interactive'),
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/*area: {
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top: '0%',
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bottom: '0%',
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left: '0%',
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right: '0%'
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},*/
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},
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//numOfWorkers: 4,
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locate: true,
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debug: true,
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frequency: 20,
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decoder: {
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readers: ["code_128_reader"],
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debug: {
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drawScanline: false,
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drawBoundingBox: false,
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showPattern: false,
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showFrequency: false
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},
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multiple: false
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},
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locator: {
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halfSample: false,
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patchSize: "x-large", // x-small, small, medium, large, x-large
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debug: {
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/*showCanvas: true,*/
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showPatches: false,
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showFoundPatches: false,
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showSkeleton: false,
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showLabels: false,
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showPatchLabels: false,
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showRemainingPatchLabels: false,
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boxFromPatches: {
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showTransformed: false,
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showTransformedBox: false,
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showBB: true
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}
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}
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}
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};
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function quagga_init() {
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Quagga.init(config, function(err) {
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if (err) {
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console.log(err);
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return;
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}
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console.log("Initialization finished. Ready to start");
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Quagga.start();
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Quagga.onDetected(function(data) {
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code = data.codeResult.code;
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console.log('Got scan: ' + code);
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if (code && lastScanResult !== code) {
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lastScanResult = code;
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console.log('Got scan (cont.): ' + lastScanResult);
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document.querySelector('#result').textContent = lastScanResult;
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// document.getElementById('result').textContent = lastScanResult
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beep();
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useScannedText(lastScanResult);
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console.log(data);
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canvas = document.querySelector('#interactive .drawingBuffer');
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drawing = canvas.getContext('2d');
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drawing.clearRect(0, 0, canvas.width, canvas.height);
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drawing.beginPath();
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drawing.moveTo(data.line[0].x, data.line[0].y);
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drawing.lineTo(data.line[1].x, data.line[1].y);
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drawing.lineWidth = 2;
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drawing.strokeStyle = 'yellow';
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drawing.closePath();
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drawing.stroke();
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setTimeout(clearCanvas, 3000);
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} else if (code) {
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console.log('... scan again');
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}
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});
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/*
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Quagga.onProcessed(function(data) {
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canvas = document.querySelector('#interactive .drawingBuffer');
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if (canvas != null) {
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context = canvas.getContext('2d');
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if (context) {
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context.clearRect(0, 0, canvas.width, canvas.height);
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}
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}
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});*/
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});
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}
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window.addEventListener('load', function () {
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let selectedDeviceId;
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let lastScanResult = '';
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// const codeReader = new ZXing.BrowserBarcodeReader()
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const codeReader = new ZXing.BrowserMultiFormatReader()
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console.log('ZXing code reader initialized')
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codeReader.getVideoInputDevices()
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.then((videoInputDevices) => {
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const sourceSelect = document.getElementById('sourceSelect')
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selectedDeviceId = videoInputDevices[0].deviceId
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if (videoInputDevices.length > 1) {
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videoInputDevices.forEach((element) => {
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const sourceOption = document.createElement('option')
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sourceOption.text = element.label
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sourceOption.value = element.deviceId
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sourceSelect.appendChild(sourceOption)
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})
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quagga_init();
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sourceSelect.onchange = () => {
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selectedDeviceId = sourceSelect.value;
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}
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const sourceSelectPanel = document.getElementById('sourceSelectPanel')
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sourceSelectPanel.style.display = 'block'
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if (!navigator.mediaDevices || !navigator.mediaDevices.enumerateDevices) {
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console.log("enumerateDevices() not supported.");
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return;
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}
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Quagga.CameraAccess.enumerateVideoDevices()
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.then(function(devices) {
|
||||
const sourceSelect = document.getElementById('sourceSelect');
|
||||
selectedDeviceId = devices[0].deviceId; // default
|
||||
if (devices.length > 1) {
|
||||
devices.forEach(function(device) {
|
||||
console.log(device.kind + ": " + device.label + " id=" + device.deviceId);
|
||||
const sourceOption = document.createElement('option');
|
||||
sourceOption.text = device.label;
|
||||
sourceOption.value = device.deviceId;
|
||||
sourceSelect.appendChild(sourceOption);
|
||||
});
|
||||
sourceSelect.onchange = () => {
|
||||
selectedDeviceId = sourceSelect.value;
|
||||
config.inputStream.constraints.deviceId = selectedDeviceId;
|
||||
Quagga.stop();
|
||||
quagga_init();
|
||||
}
|
||||
|
||||
document.getElementById('startButton').addEventListener('click', () => {
|
||||
beep()
|
||||
codeReader.decodeFromInputVideoDeviceContinuously(selectedDeviceId, 'video', (result) => {
|
||||
if (result && lastScanResult !== result.text) {
|
||||
lastScanResult = result.text
|
||||
console.log('Got scan (cont.): ' + result)
|
||||
document.getElementById('result').textContent = result.text
|
||||
beep()
|
||||
useScannedText(result.text)
|
||||
} else if (result) {
|
||||
console.log('... scan again')
|
||||
}
|
||||
});
|
||||
|
||||
/*
|
||||
codeReader.decodeOnceFromVideoDevice(selectedDeviceId, 'video').then((result) => {
|
||||
if (lastScanResult !== result.text) {
|
||||
lastScanResult = result.text
|
||||
console.log('Got scan: ' + result.text)
|
||||
document.getElementById('result').textContent = result.text
|
||||
useScannedText(result.text)
|
||||
} else {
|
||||
console.log('... scan again')
|
||||
}
|
||||
}).catch((err) => {
|
||||
console.error(err)
|
||||
document.getElementById('result').textContent = err
|
||||
})
|
||||
*/
|
||||
console.log(`Started continous decode from camera with id ${selectedDeviceId}`)
|
||||
})
|
||||
|
||||
document.getElementById('resetButton').addEventListener('click', () => {
|
||||
document.getElementById('result').textContent = '';
|
||||
codeReader.reset();
|
||||
console.log('Reset.')
|
||||
})
|
||||
|
||||
const sourceSelectPanel = document.getElementById('sourceSelectPanel');
|
||||
sourceSelectPanel.style.display = 'block';
|
||||
}
|
||||
document.getElementById('startButton').addEventListener('click', () => {
|
||||
beep();
|
||||
Quagga.start();
|
||||
console.log(`Started scan from camera with id ${selectedDeviceId}`)
|
||||
})
|
||||
.catch((err) => {
|
||||
console.error(err)
|
||||
})
|
||||
})
|
||||
</script>
|
||||
|
||||
document.getElementById('resetButton').addEventListener('click', () => {
|
||||
document.getElementById('result').textContent = '';
|
||||
Quagga.stop();
|
||||
console.log('Reset/stopped.')
|
||||
})
|
||||
|
||||
document.getElementById('clearOverlayButton').addEventListener('click', () => {
|
||||
clearCanvas();
|
||||
})
|
||||
})
|
||||
.catch(function(err) {
|
||||
console.log(err);
|
||||
});
|
||||
|
||||
});
|
||||
</script>
|
||||
<hr />
|
||||
<div class="row mb-3">
|
||||
<div class="col-8">
|
||||
|
|
@ -145,14 +250,22 @@
|
|||
var containerIsValid = false;
|
||||
var assetIsValid = false;
|
||||
|
||||
async function getObjectInfo(url) {
|
||||
const response = await fetch(url);
|
||||
const object_json = response.json();
|
||||
return object_json;
|
||||
}
|
||||
|
||||
async function getContainerInfo(containerId) {
|
||||
document.querySelector('#container_id').value = containerId;
|
||||
url = '/api/containers?named_id=' + containerId;
|
||||
document.querySelector('#container_details').value = 'Trying ' + url;
|
||||
const response = await fetch(url);
|
||||
const container = await response.json();
|
||||
const container = await getObjectInfo(url);
|
||||
if (container.count >= 1) {
|
||||
document.querySelector('#container_details').value = container.results[0].description;
|
||||
c = container.results[0];
|
||||
console.log(c);
|
||||
containerType = await getObjectInfo(c.container_type);
|
||||
document.querySelector('#container_details').value = c.description + "\n" + c.named_id + ': ' + c.color + "\n" + containerType.description;
|
||||
containerIsValid = true;
|
||||
} else {
|
||||
document.querySelector('#container_details').value = document.querySelector('#container_details').value + "\nERROR: No result\n";
|
||||
|
|
@ -178,15 +291,11 @@
|
|||
}
|
||||
|
||||
function useScannedText(msg) {
|
||||
// const data = JSON.parse(e.data);
|
||||
// msg = String(data.message);
|
||||
document.querySelector('#chat-log').value += (msg + '\n');
|
||||
if (msg.startsWith('C-')) {
|
||||
getContainerInfo(data.message);
|
||||
// document.querySelector('#container_id').value = msg;
|
||||
getContainerInfo(msg);
|
||||
} else if (msg.startsWith('A-')) {
|
||||
getAssetInfo(data.message);
|
||||
// document.querySelector('#asset_id').value = msg;
|
||||
getAssetInfo(msg);
|
||||
} else {
|
||||
assetId = 'A-' + msg;
|
||||
document.querySelector('#asset_id').value = assetId;
|
||||
|
|
|
|||
|
|
@ -6,5 +6,7 @@ app_name = 'booker'
|
|||
urlpatterns = [
|
||||
path('', views.IndexView.as_view(), name='index'),
|
||||
path('smartphone_scanner/', views.SmartphoneScannerView.as_view(), name='smartphone_scanner'),
|
||||
path('<str:scanner_id>/', views.scanner, name='scanner')
|
||||
path('chrome_scanner/', views.ChromeScannerView.as_view(), name='chrome_scanner'),
|
||||
path('<str:scanner_id>/', views.scanner_view, name='scanner'),
|
||||
path('webscanner/<str:scanner_id>/', views.web_scanner_view, name='web_scanner'),
|
||||
]
|
||||
|
|
|
|||
|
|
@ -1,6 +1,18 @@
|
|||
from datetime import datetime
|
||||
from channels.layers import get_channel_layer
|
||||
from django.shortcuts import render
|
||||
from django.views.decorators.csrf import csrf_exempt
|
||||
from django.views.generic import ListView, TemplateView
|
||||
from gmqtt import Client
|
||||
from rest_framework.utils import json
|
||||
|
||||
from homelog import settings
|
||||
from homelog.system_user import get_system_user
|
||||
from .models import Scanner
|
||||
from django.http import HttpResponse
|
||||
import logging
|
||||
|
||||
LOGGER = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class IndexView(ListView):
|
||||
|
|
@ -8,10 +20,53 @@ class IndexView(ListView):
|
|||
template_name = 'booker/index.html'
|
||||
|
||||
|
||||
def scanner(request, scanner_id):
|
||||
def scanner_view(request, scanner_id):
|
||||
return render(request, 'booker/scanner.html', {
|
||||
'scanner_id': scanner_id
|
||||
})
|
||||
|
||||
|
||||
class SmartphoneScannerView(TemplateView):
|
||||
template_name = 'booker/smartphone_scanner.html'
|
||||
|
||||
|
||||
class ChromeScannerView(TemplateView):
|
||||
template_name = 'booker/chrome_scanner.html'
|
||||
|
||||
|
||||
@csrf_exempt
|
||||
def web_scanner_view(request, scanner_id):
|
||||
def get_or_create_scanner(named_id):
|
||||
scanner, created = Scanner.objects.get_or_create(named_id=named_id, defaults={
|
||||
# 'lwt_topic': topic,
|
||||
'description': 'WebAPI scanner',
|
||||
'last_online_ts': datetime.now(),
|
||||
'created_by': get_system_user(),
|
||||
'changed_by': get_system_user()
|
||||
})
|
||||
if created:
|
||||
LOGGER.debug(f"Created new scanner entry for {named_id}")
|
||||
else:
|
||||
LOGGER.debug(f"Updated scanner entry for {named_id}")
|
||||
return scanner
|
||||
|
||||
print(f"Got {request.POST['scan']} from scanner {scanner_id}")
|
||||
get_or_create_scanner(scanner_id)
|
||||
topic = f"barcodescanner/{scanner_id}/scan"
|
||||
'''
|
||||
client = Client('homelog-webscanner')
|
||||
client.set_auth_credentials(username=settings.MQTT_USER, password=settings.MQTT_PASSWORD)
|
||||
|
||||
client.connect(settings.MQTT_HOST, 1883, keepalive=60, version=settings.MQTT_VERSION)
|
||||
client.publish(topic, request.POST['scan'])
|
||||
client.disconnect()
|
||||
# MqttConsumer().mqtt_publish({'topic': topic, 'payload': request.POST['scan'], 'retain': False})
|
||||
'''
|
||||
channel_layer = get_channel_layer()
|
||||
channel_layer.group_send(
|
||||
'mqtt', # scanner_id,
|
||||
{"type": "distribute", "text": json.dumps({'message': request.POST['scan'], 'topic': topic})}
|
||||
)
|
||||
'''
|
||||
'''
|
||||
return HttpResponse(f"<html><body><p>OK, got {request.POST['scan']} from {scanner_id}</p></body></html>")
|
||||
|
|
|
|||
Loading…
Reference in New Issue