com.lowagie.text.pdf

Class 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 (psoares@consiste.pt)

Field Summary

(package private) static byte[][]
BARS
The bars to generate the code.
(package private) static String
CHARS
The index chars to BARS.
(package private) static String
EXTENDED
The character combinations to make the code 39 extended.

Fields inherited from class com.lowagie.text.pdf.Barcode

CODABAR, CODE128, CODE128_RAW, CODE128_UCC, EAN13, EAN8, PLANET, POSTNET, SUPP2, SUPP5, UPCA, UPCE, barHeight, baseline, checksumText, code, codeType, extended, font, generateChecksum, guardBars, inkSpreading, n, size, startStopText, textAlignment, x

Constructor Summary

Barcode39()
Creates a new Barcode39.

Method Summary

java.awt.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, Color barColor, Color textColor)
Places the barcode in a PdfContentByte.

Methods inherited from class com.lowagie.text.pdf.Barcode

createAwtImage, createImageWithBarcode, createTemplateWithBarcode, getBarHeight, getBarcodeSize, getBaseline, getCode, getCodeType, getFont, getInkSpreading, getN, getSize, getTextAlignment, getX, isChecksumText, isExtended, isGenerateChecksum, isGuardBars, isStartStopText, placeBarcode, setBarHeight, setBaseline, setChecksumText, setCode, setCodeType, setExtended, setFont, setGenerateChecksum, setGuardBars, setInkSpreading, setN, setSize, setStartStopText, setTextAlignment, setX

Field Details

BARS

(package private) static byte[][] BARS
The bars to generate the code.

CHARS

(package private) static String CHARS
The index chars to BARS.

EXTENDED

(package private) static String EXTENDED
The character combinations to make the code 39 extended.

Constructor Details

Barcode39

public Barcode39()
Creates a new Barcode39.

Method Details

createAwtImage

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

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).
Overrides:
getBarcodeSize in interface Barcode
Returns:
the size the barcode occupies.

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

getChecksum

(package private) static char getChecksum(String text)
Calculates the checksum.
Parameters:
text - the text
Returns:
the checksum

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

placeBarcode

public Rectangle placeBarcode(PdfContentByte cb,
                              Color barColor,
                              Color textColor)
Places the barcode in a PdfContentByte. The barcode is always placed at coodinates (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

Overrides:
placeBarcode in interface 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