Class Barcode39

java.lang.Object
com.lowagie.text.pdf.Barcode
com.lowagie.text.pdf.Barcode39

public class Barcode39 extends Barcode
Implements the code 39 and code 39 extended. The default parameters are:
 x = 0.8f;
 n = 2;
 font = BaseFont.createFont("Helvetica", "winansi", false);
 size = 8;
 baseline = size;
 barHeight = size * 3;
 textAlignment = Element.ALIGN_CENTER;
 generateChecksum = false;
 checksumText = false;
 startStopText = true;
 extended = false;
 
  • Field Details

    • BARS

      private static final byte[][] BARS
      The bars to generate the code.
    • CHARS

      private static final String CHARS
      The index chars to BARS.
      See Also:
    • EXTENDED

      private static final String EXTENDED
      The character combinations to make the code 39 extended.
      See Also:
  • Constructor Details

    • Barcode39

      public Barcode39()
      Creates a new Barcode39.
  • Method Details

    • getBarsCode39

      public static byte[] getBarsCode39(String text)
      Creates the bars.
      Parameters:
      text - the text to create the bars. This text does not include the start and stop characters
      Returns:
      the bars
    • getCode39Ex

      public static String getCode39Ex(String text)
      Converts the extended text into a normal, escaped text, ready to generate bars.
      Parameters:
      text - the extended text
      Returns:
      the escaped text
    • getChecksum

      static char getChecksum(String text)
      Calculates the checksum.
      Parameters:
      text - the text
      Returns:
      the checksum
    • getBarcodeSize

      public Rectangle getBarcodeSize()
      Gets the maximum area that the barcode and the text, if any, will occupy. The lower left corner is always (0, 0).
      Specified by:
      getBarcodeSize in class Barcode
      Returns:
      the size the barcode occupies.
    • placeBarcode

      public Rectangle placeBarcode(PdfContentByte cb, Color barColor, Color textColor)
      Places the barcode in a PdfContentByte. The barcode is always placed at coordinates (0, 0). Use the translation matrix to move it elsewhere.

      The bars and text are written in the following colors:

      table of the colors of the bars and text

      barColor

      textColor

      Result

      null

      null

      bars and text painted with current fill color

      barColor

      null

      bars and text painted with barColor

      null

      textColor

      bars painted with current color
      text painted with textColor

      barColor

      textColor

      bars painted with barColor
      text painted with textColor

      Specified by:
      placeBarcode in class Barcode
      Parameters:
      cb - the PdfContentByte where the barcode will be placed
      barColor - the color of the bars. It can be null
      textColor - the color of the text. It can be null
      Returns:
      the dimensions the barcode occupies
    • createAwtImage

      public Image createAwtImage(Color foreground, Color background)
      Creates a java.awt.Image. This image only contains the bars without any text.
      Specified by:
      createAwtImage in class Barcode
      Parameters:
      foreground - the color of the bars
      background - the color of the background
      Returns:
      the image