Manages the global barcode settings for the document.
function lt.Document.DocumentBarcodes
class lt.Document.DocumentBarcodes()
DocumentBarcodes manages the global barcode settings of the document. It can be accessed through the Barcodes property of LEADDocument.
For more information, refer to Barcode Processing with the Document Library.
This example shows how to read the barcodes from a TIFF file.
import { DocumentHelper } from "../../utilities/DocumentHelper";
export class LEADDocument_BarcodesExample {
public constructor() {
lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/v200/LEADTOOLSEVAL.txt", "EVAL", null);
DocumentHelper.initFactory();
}
public run = (buttonID: string) => {
const exampleButton = document.getElementById(buttonID);
exampleButton.onclick = this.readBarcodes;
}
readBarcodes = () => {
const url = "https://demo.leadtools.com/images/tiff/barcodes.tif";
const loadDocumentOptions = new lt.Document.LoadDocumentOptions();
DocumentHelper.log("Loading document...");
lt.Document.DocumentFactory.loadFromUri(url, loadDocumentOptions)
.done((document: lt.Document.LEADDocument) => {
DocumentHelper.log("Done. Reading barcodes...");
// Read all the barcodes in the first page
const docPage = document.pages.item(0);
docPage.readBarcodes(lt.LeadRectD.empty, 0, null)
.done((barcodes) => {
DocumentHelper.log("Number of barcodes read: " + barcodes.length + " (data in console)", barcodes);
})
.fail(DocumentHelper.showServiceError);
})
.fail(DocumentHelper.showServiceError);
}
}
export class DocumentHelper {
static showServiceError = (jqXHR, statusText, errorThrown) => {
alert("Error returned from service. See the console for details.");
const serviceError = lt.Document.ServiceError.parseError(jqXHR, statusText, errorThrown);
console.error(serviceError);
}
static log = (message: string, data?: any) => {
const outputElement = document.getElementById("output");
if (outputElement) {
const time = (new Date()).toLocaleTimeString();
const textElement = document.createElement("p");
textElement.innerHTML = (outputElement.childElementCount + 1) + " [" + time + "]: " + message;
outputElement.insertBefore(textElement, outputElement.firstChild);
}
if (!data)
console.log(message);
else
console.log(message, data);
}
static initFactory = () => {
// To communicate with the DocumentsService, it must be running!
// Change these parameters to match the path to the service.
lt.Document.DocumentFactory.serviceHost = "http://localhost:40000";
lt.Document.DocumentFactory.servicePath = "";
lt.Document.DocumentFactory.serviceApiPath = "api";
}
}
import { DocumentHelper } from "../../utilities/DocumentHelper";
export class LEADDocument_BarcodesExample {
constructor() {
lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/v200/LEADTOOLSEVAL.txt", "EVAL", null);
DocumentHelper.initFactory();
}
run = (buttonID) => {
const exampleButton = document.getElementById(buttonID);
exampleButton.onclick = this.readBarcodes;
}
readBarcodes = () => {
const url = "https://demo.leadtools.com/images/tiff/barcodes.tif";
const loadDocumentOptions = new lt.Document.LoadDocumentOptions();
DocumentHelper.log("Loading document...");
lt.Document.DocumentFactory.loadFromUri(url, loadDocumentOptions)
.done((document) => {
DocumentHelper.log("Done. Reading barcodes...");
// Read all the barcodes in the first page
const docPage = document.pages.item(0);
docPage.readBarcodes(lt.LeadRectD.empty, 0, null)
.done((barcodes) => {
DocumentHelper.log("Number of barcodes read: " + barcodes.length + " (data in console)", barcodes);
})
.fail(DocumentHelper.showServiceError);
})
.fail(DocumentHelper.showServiceError);
}
}
export class DocumentHelper {
static showServiceError = (jqXHR, statusText, errorThrown) => {
alert("Error returned from service. See the console for details.");
const serviceError = lt.Document.ServiceError.parseError(jqXHR, statusText, errorThrown);
console.error(serviceError);
}
static log = (message, data) => {
const outputElement = document.getElementById("output");
if (outputElement) {
const time = (new Date()).toLocaleTimeString();
const textElement = document.createElement("p");
textElement.innerHTML = (outputElement.childElementCount + 1) + " [" + time + "]: " + message;
outputElement.insertBefore(textElement, outputElement.firstChild);
}
if (!data)
console.log(message);
else
console.log(message, data);
}
static initFactory = () => {
// To communicate with the DocumentsService, it must be running!
// Change these parameters to match the path to the service.
lt.Document.DocumentFactory.serviceHost = "http://localhost:40000";
lt.Document.DocumentFactory.servicePath = "";
lt.Document.DocumentFactory.serviceApiPath = "api";
}
}
<!doctype html>
<html lang="en">
<title>Document Example | Barcodes</title>
<head>
<script src="https://code.jquery.com/jquery-2.2.4.min.js"
integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44=" crossorigin="anonymous"></script>
<script src="../../LT/Leadtools.js"></script>
<script src="../../LT/Leadtools.Controls.js"></script>
<script src="../../LT/Leadtools.Annotations.Engine.js"></script>
<script src="../../LT/Leadtools.Annotations.Designers.js"></script>
<script src="../../LT/Leadtools.Annotations.Rendering.Javascript.js"></script>
<script src="../../LT/Leadtools.Annotations.Automation.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Main.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Color.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Core.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Effects.js"></script>
<script src="../../LT/Leadtools.Document.js"></script>
<script src="../../LT/Leadtools.Document.Viewer.js"></script>
<link rel="stylesheet" type="text/css" href="../../css/examples.css">
<!-- All demo files are bundled and appended to the window -->
<script src="../../bundle.js" type="text/javascript"></script>
</head>
<body>
<div>
<button type="button" id="exampleButton">Run Example</button>
</div>
<div id="output"></div>
<div>
<img id="img" />
</div>
</body>
<script>
window.onload = () => {
const example = new window.examples.LEADDocument.Barcodes();
example.run("exampleButton");
};
</script>
</html>
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