com.lowagie.text.pdf

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;
 

Author:

Paulo Soares (psoares@consiste.pt)

Field Summary

Fields

Modifier and Type	Field and Description
private static byte[][]	BARS The bars to generate the code.
private static java.lang.String	CHARS The index chars to BARS.
private static java.lang.String	EXTENDED The character combinations to make the code 39 extended.

Fields inherited from class com.lowagie.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

Constructors

Constructor and Description
Barcode39() Creates a new Barcode39.

Method Summary

Methods

Modifier and Type	Method and Description
java.awt.Image	createAwtImage(java.awt.Color foreground, java.awt.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(java.lang.String text) Creates the bars.
(package private) static char	getChecksum(java.lang.String text) Calculates the checksum.
static java.lang.String	getCode39Ex(java.lang.String text) Converts the extended text into a normal, escaped text, ready to generate bars.
Rectangle	placeBarcode(PdfContentByte cb, java.awt.Color barColor, java.awt.Color textColor) Places the barcode in a PdfContentByte.

Methods inherited from class com.lowagie.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 java.lang.String CHARS

The index chars to BARS.

See Also:

Constant Field Values

EXTENDED

private static final java.lang.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(java.lang.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 java.lang.String getCode39Ex(java.lang.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(java.lang.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,
                     java.awt.Color barColor,
                     java.awt.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:

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 java.awt.Image createAwtImage(java.awt.Color foreground,
                            java.awt.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