Generate Barcode Using Custom Width

Originally, barcodes systematically represented data by varying the widths and spacings of parallel lines. Now, you can generate and recognize barcodes with custom widths. The idea is to calculate the widths for all supported properties and generate a barcode that fits in the space that is left.

Barcodes with custom widths support these properties:

• The caption above and below but not to the left, center or right.
• CodeText (only at the bottom).
• Margins.
• Different graphics unit as usual.
• Limited to two lines for each type of text. More will flatten the barcode image.
• If no license has been applied, that is, if you’re evaluating Aspose.BarCode, an evaluation watermark appears at the top left corner.
• To get a barcode image with no text or margins, turn off those properties.

Below are code snippets that create custom width bar code.

Create an Image With Exact Barcode Only

String dataDir = Utils.getDataDir(CreateAnImageWithExactBarcodeOnly.class) + "TechnicalArticles/";
// Generate the barcode
BarcodeGenerator generator = new BarcodeGenerator(EncodeTypes.CODE_128);

// Set the code text
generator.getParameters().getBarcode().getCodeTextParameters().setTwoDDisplayText("123456");

// Get bitmap with exact barcode only
BufferedImage image = generator.generateBarCodeImage();

// Saving the buffered image
File outputfile = new File(dataDir + "custombarcode.png");
ImageIO.write(image, "png", outputfile);

Sample image

Below are code snippets that create custom width barcode.

Create and Set Size for the Whole Picture With Barcode

String dataDir = Utils.getDataDir(CreateAndSetSizeForWholePictureWithBarcode.class) + "TechnicalArticles/";
// Generate the bar code
BarcodeGenerator generator = new BarcodeGenerator(EncodeTypes.PDF_417);

// Set the code text
generator.setCodeText("One thing 2 thing");

// Set the code text location
generator.getParameters().getBarcode().getCodeTextParameters().setLocation(CodeLocation.NONE);

// Set margins
generator.getParameters().getBarcode().getPadding().getBottom().setPixels(0);
generator.getParameters().getBarcode().getPadding().getLeft().setPixels(0);
generator.getParameters().getBarcode().getPadding().getRight().setPixels(0);
generator.getParameters().getBarcode().getPadding().getTop().setPixels(0);

// Get BufferedImage with exact bar code only
BufferedImage img = generator.generateBarCodeImage();

// Saving the buffered image
File outputfile = new File(dataDir + "custombarcode.png");
ImageIO.write(img, "png", outputfile);

Figure: Sample image