@barcode-bakery/barcode-1d

Barcode Bakery is a library written in Node.JS, .NET Standard and PHP which allows you to generate barcodes on the fly on your server for displaying or saving.

The library has minimal dependencies in each language in order to be supported on a wide variety of web servers.

The library is available for free for non-commercial use; however you must purchase a license if you plan to use it in a commercial environment.

Installation

There are two ways to install our library:

Run the following command:

$ npm install @barcode-bakery/barcode-1d @barcode-bakery/barcode-common

Or, download the library on our website, and follow our developer's guide.

Requirements

node-canvas. Version 2+
node >= 14+

Example usages

For a full example of how to use each symbology type, visit our API page.

You can also visit the GitHub example page.

Displaying a Code 128 on the screen

import { createServer } from 'http';
import { parse } from 'querystring';
import { BCGColor, BCGDrawing, BCGFont } from '@barcode-bakery/barcode-common';
import { BCGcode128 } from '@barcode-bakery/barcode-1d';

const defaultText = 'a123';

let font = new BCGFont('Arial', 18);
let colorBlack = new BCGColor(0, 0, 0);
let colorWhite = new BCGColor(255, 255, 255);

let getDrawing = function (text) {
  let drawException = null,
    barcode = null;
  try {
    // Barcode Part
    let code = new BCGcode128();
    code.setScale(2); // Resolution
    code.setThickness(30); // Thickness
    code.setBackgroundColor(colorWhite); // Color of spaces
    code.setForegroundColor(colorBlack); // Color of bars
    code.setFont(font); // Font (or 0)
    code.setStart(null);
    code.setTilde(true);
    code.parse(text); // Text
    barcode = code;
  } catch (exception) {
    drawException = exception;
  }

  let drawing = new BCGDrawing(barcode, colorWhite);
  if (drawException) {
    drawing.drawException(drawException);
  }

  return drawing;
};

createServer(function (request, response) {
  // Don't forget to sanitize user inputs.
  let drawing = getDrawing(parse(request.url).query?.toString() || defaultText);
  drawing.toBuffer(BCGDrawing.ImageFormat.Png, function (err, buffer) {
    response.writeHead(200, { 'Content-Type': 'image/png' });
    response.end(buffer);
  });
}).listen(8124);
console.log('Server running at http://127.0.0.1:8124/');

Saving the image to a file

Replace the last lines of the previous code with the following:

let drawing = new BCGDrawing(code, colorWhite);
drawing.save('image.png', BCGDrawing.ImageFormat.Png, function () {
  console.log('Done.');
});

This will generate the following:

Sync methods

Both save and toBuffer have counterparts acting synchronously: saveSync and toBufferSync.

Tests

Simply type npm test to run the tests.