barcode-reader-javascript-samples/scenarios/cart-builder/cart-builder.html at main · Dynamsoft/barcode-reader-javascript-samples · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>List-Builder - Scan to Cart Simulation</title>

  <!-- Include Dynamsoft Barcode Reader Bundle via CDN -->
  <script src="https://cdn.jsdelivr.net/npm/dynamsoft-barcode-reader-bundle@11.2.4000/dist/dbr.bundle.js"></script>
  <!-- If the network is unstable or you prefer to self-host the SDK, uncomment the line below to load it locally -->
  <!-- <script src="../../../dist/dbr.bundle.js"></script> -->


  <style>
    body {
      font-family: Arial, sans-serif;
      margin: 0;
      padding: 20px;
      background: #f0f0f0;
    }

    header {
      text-align: center;
      margin-bottom: 30px;
    }

    .scan-button {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 8px 16px;
      margin: 0 auto 20px;
      font-size: 14px;
      background: #4caf50;
      color: #fff;
      border: none;
      border-radius: 4px;
      cursor: pointer;
    }

    .scan-button:hover {
      background: #45a049;
    }

    .barcode-icon {
      height: 12px;
      margin-left: 8px;
    }

    .cart {
      max-width: 600px;
      margin: 0 auto;
      background: #fff;
      padding: 20px;
      border-radius: 5px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .cart-item {
      display: flex;
      justify-content: space-between;
      padding: 10px 0;
      border-bottom: 1px solid #ddd;
    }

    .cart-item:last-child {
      border-bottom: none;
    }

    #floatingDiv {
      position: fixed;
      top: 40%;
      left: 10%;
      width: 50%;
      height: 25%;
      max-width: 400px;
      max-height: 200px;
      min-width: 150px;
      min-height: 150px;
      background: #f9f9f9;
      border: 2px solid #ccc;
      border-radius: 8px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      cursor: move;
      z-index: 999;
      padding: 3px;
      box-sizing: border-box;
    }
  </style>
</head>

<body>
  <header>
    <h1>🛒 Scan Barcode to Add Items to Cart</h1>
  </header>

  <!-- Scan Button -->
  <button class="scan-button" id="barcodeBtn">
    Scan Barcode
    <svg class="barcode-icon" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
      <rect x="2" y="4" width="2" height="16" fill="black" />
      <rect x="6" y="4" width="1" height="16" fill="black" />
      <rect x="9" y="4" width="2" height="16" fill="black" />
      <rect x="13" y="4" width="1" height="16" fill="black" />
      <rect x="16" y="4" width="2" height="16" fill="black" />
      <rect x="20" y="4" width="1" height="16" fill="black" />
    </svg>
  </button>

  <!-- Floating Scanner Container -->
  <div id="floatingDiv" hidden></div>

  <!-- Shopping Cart -->
  <div class="cart">
    <h2>Simulated Shopping Cart</h2>
    <div id="cart-items">
      <p>No items in cart. Start scanning!</p>
    </div>
  </div>

  <script>
    const dragDiv = document.getElementById("floatingDiv");
    // Function to initialize and launch the barcode scanner
    async function startScanner() {
      // Create a new instance of Dynamsoft BarcodeScanner with configuration options
      const scanner = new Dynamsoft.BarcodeScanner({
        // License key for Dynamsoft Barcode Reader (replace with a valid key)
        license: "DLS2eyJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSJ9",

        // Set scanning mode to detect multiple unique barcodes in one session
        scanMode: Dynamsoft.EnumScanMode.SM_MULTI_UNIQUE,

        // Time in milliseconds to forget duplicate barcodes (prevents rapid duplicate scans)
        duplicateForgetTime: 5000,

        showResultView: false,

        // Configure the scanner view (UI settings)
        scannerViewConfig: {
          container: document.querySelector("#floatingDiv"), // Attach scanner UI to floating div
          showCloseButton: true, // Display a close button in the scanner UI
        },

        // Callback triggered when a unique barcode is detected
        onUniqueBarcodeScanned: (result) => {
          // Simulate adding the scanned barcode to the shopping cart
          simulateAddingToCart(result.text);
        },
        // The watermark can be removed via showPoweredByDynamsoft configuration option.
        // showPoweredByDynamsoft: false,
      });

      // Show the floating scanner container
      document.querySelector("#floatingDiv").hidden = false;

      // Launch the scanner (opens camera and starts scanning)
      await scanner.launch();

      // Hide the scanner container after scanning is complete or closed
      document.querySelector("#floatingDiv").hidden = true;
    }

    // Product List
    const products = [
      { name: "Wireless Mouse", price: 19.99 },
      { name: "Bluetooth Speaker", price: 29.99 },
      { name: "USB-C Cable", price: 9.99 },
      { name: "Notebook", price: 4.99 },
      { name: "Water Bottle", price: 14.99 },
      { name: "Laptop Stand", price: 34.99 },
      { name: "Wireless Keyboard", price: 24.99 },
      { name: "Portable Charger", price: 39.99 },
      { name: "LED Desk Lamp", price: 22.5 },
      { name: "Backpack", price: 49.99 },
      { name: "Earbuds", price: 17.99 },
      { name: "Smartphone Holder", price: 12.99 },
      { name: "Desk Organizer", price: 15.49 },
      { name: "Fitness Tracker", price: 59.99 },
      { name: "Coffee Mug", price: 8.99 },
      { name: "HDMI Cable", price: 6.99 },
      { name: "Flash Drive 64GB", price: 14.49 },
      { name: "Gaming Headset", price: 45.0 },
      { name: "Desk Chair Cushion", price: 27.99 },
      { name: "Sticky Notes Pack", price: 3.99 },
    ];

    let cart = [];

    // Simulate adding product to cart
    function simulateAddingToCart(barcodeText) {
      const product = {
        ...products[Math.floor(Math.random() * products.length)],
      };
      product.name += ` (${shortenString(barcodeText)})`;
      cart.push(product);
      updateCartDisplay();
    }

    // Shorten barcode text
    const shortenString = (str, max = 15) =>
      str.length <= max ? str : str.slice(0, max) + "...";

    // Update Cart UI
    function updateCartDisplay() {
      const cartDiv = document.getElementById("cart-items");
      cartDiv.innerHTML = "";

      const header = document.createElement("div");
      header.className = "cart-item";
      header.innerHTML = `<strong>Item</strong><strong>Price</strong>`;
      cartDiv.appendChild(header);

      cart.forEach((item) => {
        const div = document.createElement("div");
        div.className = "cart-item";
        div.innerHTML = `<span>${item.name}</span><span>$${item.price.toFixed(
          2
        )}</span>`;
        cartDiv.appendChild(div);
      });
    }

    // Initialize Scan Button
    window.onload = () => {
      document
        .getElementById("barcodeBtn")
        .addEventListener("click", startScanner);

      // Make the Floating Div Draggable
      let offsetX = 0,
        offsetY = 0,
        isDragging = false;

      dragDiv.addEventListener("mousedown", (e) => {
        isDragging = true;
        offsetX = e.clientX - dragDiv.offsetLeft;
        offsetY = e.clientY - dragDiv.offsetTop;
      });

      document.addEventListener("mousemove", (e) => {
        if (isDragging) {
          dragDiv.style.left = `${e.clientX - offsetX}px`;
          dragDiv.style.top = `${e.clientY - offsetY}px`;
        }
      });

      document.addEventListener("mouseup", () => (isDragging = false));

      dragDiv.addEventListener("touchstart", (e) => {
        isDragging = true;
        offsetX = e.touches[0].clientX - dragDiv.offsetLeft;
        offsetY = e.touches[0].clientY - dragDiv.offsetTop;
      });

      document.addEventListener("touchmove", (e) => {
        if (isDragging) {
          e.preventDefault();
          dragDiv.style.left = `${e.touches[0].clientX - offsetX}px`;
          dragDiv.style.top = `${e.touches[0].clientY - offsetY}px`;
        }
      }, { passive: false });

      document.addEventListener("touchend", () => (isDragging = false));
    };

    window.addEventListener("orientationchange", () => {
      dragDiv.style.left = "10%"
      dragDiv.style.top = "40%"
    })
  </script>
</body>

</html>