com.itextpdf.text.pdf
Class Barcode39

java.lang.Object
  extended by com.itextpdf.text.pdf.Barcode
      extended by com.itextpdf.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;
 

Author:
Paulo Soares

Field Summary
private static byte[][] BARS
          The bars to generate the code.
private static String CHARS
          The index chars to BARS.
private static String EXTENDED
          The character combinations to make the code 39 extended.
 
Fields inherited from class com.itextpdf.text.pdf.Barcode
altText, barHeight, baseline, checksumText, CODABAR, code, CODE128, CODE128_RAW, CODE128_UCC, codeType, EAN13, EAN8, extended, font, generateChecksum, guardBars, inkSpreading, n, PLANET, POSTNET, size, startStopText, SUPP2, SUPP5, textAlignment, UPCA, UPCE, x
 
Constructor Summary
Barcode39()
          Creates a new Barcode39.
 
Method Summary
 Image createAwtImage(Color foreground, Color background)
          Creates a java.awt.Image.
 Rectangle getBarcodeSize()
          Gets the maximum area that the barcode and the text, if any, will occupy.
static byte[] getBarsCode39(String text)
          Creates the bars.
(package private) static char getChecksum(String text)
          Calculates the checksum.
static String getCode39Ex(String text)
          Converts the extended text into a normal, escaped text, ready to generate bars.
 Rectangle placeBarcode(PdfContentByte cb, BaseColor barColor, BaseColor textColor)
          Places the barcode in a PdfContentByte.
 
Methods inherited from class com.itextpdf.text.pdf.Barcode
createImageWithBarcode, createTemplateWithBarcode, getAltText, getBarHeight, getBaseline, getCode, getCodeType, getFont, getInkSpreading, getN, getSize, getTextAlignment, getX, isChecksumText, isExtended, isGenerateChecksum, isGuardBars, isStartStopText, setAltText, setBarHeight, setBaseline, setChecksumText, setCode, setCodeType, setExtended, setFont, setGenerateChecksum, setGuardBars, setInkSpreading, setN, setSize, setStartStopText, setTextAlignment, setX
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

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:
Constant Field Values

EXTENDED

private static final String EXTENDED
The character combinations to make the code 39 extended.

See Also:
Constant Field Values
Constructor Detail

Barcode39

public Barcode39()
Creates a new Barcode39.

Method Detail

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,
                              BaseColor barColor,
                              BaseColor 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:

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

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