org.krysalis.barcode4j.impl.code128
Class Code128Bean

java.lang.Object
  org.krysalis.barcode4j.impl.AbstractBarcodeBean
      org.krysalis.barcode4j.impl.code128.Code128Bean

All Implemented Interfaces:

BarcodeGenerator

Direct Known Subclasses:

EAN128Bean

public class Code128Bean
extends AbstractBarcodeBean

This class is an implementation of the Code 128 barcode.

Version:

$Id: Code128Bean.java,v 1.9 2009/02/18 16:09:04 jmaerki Exp $

Field Summary

protected static int	DEFAULT_CODESET Default codeset.
protected static double	DEFAULT_MODULE_WIDTH The default module width for Code 128.

Fields inherited from class org.krysalis.barcode4j.impl.AbstractBarcodeBean

doQuietZone, fontName, fontSize, height, moduleWidth, msgPos, pattern, quietZone, quietZoneVertical

Constructor Summary

Code128Bean()
Create a new instance.

Method Summary

BarcodeDimension	calcDimensions(java.lang.String msg) Calculates the dimension of a barcode with the given message. The dimensions are dependant on the configuration of the barcode generator.
void	generateBarcode(CanvasProvider canvas, java.lang.String msg) Generates a barcode using the given Canvas to render the barcode to its output format.
double	getBarWidth(int width) Returns the effective width of a bar with a given logical width.
int	getCodeset() Returns the codeset to be used.
protected boolean	hasFontDescender() Indicates whether the barcode height calculation should take a font descender into account.
void	setCodeset(int codeset) Sets the codesets to use.

Methods inherited from class org.krysalis.barcode4j.impl.AbstractBarcodeBean

doQuietZone, getBarHeight, getFontName, getFontSize, getHeight, getHumanReadableHeight, getModuleWidth, getMsgPosition, getPattern, getQuietZone, getVerticalQuietZone, hasQuietZone, setBarHeight, setFontName, setFontSize, setHeight, setModuleWidth, setMsgPosition, setPattern, setQuietZone, setVerticalQuietZone

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_MODULE_WIDTH

protected static final double DEFAULT_MODULE_WIDTH

The default module width for Code 128.

See Also:

Constant Field Values

DEFAULT_CODESET

protected static final int DEFAULT_CODESET

Default codeset.

See Also:

Constant Field Values

Constructor Detail

Code128Bean

public Code128Bean()

Create a new instance.

Method Detail

setCodeset

public void setCodeset(int codeset)

Sets the codesets to use. This can be used to restrict the Code 128 codesets if an application requires that.

Parameters:

codeset - the codesets to use (see Code128Constants.CODESET_*)

getCodeset

public int getCodeset()

Returns the codeset to be used.

Returns:

the codeset (see Code128Constants.CODESET_*)

hasFontDescender

protected boolean hasFontDescender()

Indicates whether the barcode height calculation should take a font descender into account. This is necessary for barcodes that support lower-case characters like Code128.

Overrides:

hasFontDescender in class AbstractBarcodeBean

Returns:

true if the implementation has to take font descenders into account

getBarWidth

public double getBarWidth(int width)

Returns the effective width of a bar with a given logical width.

Specified by:

getBarWidth in class AbstractBarcodeBean

Parameters:

width - the logical width (1=narrow, 2=wide)

Returns:

the effective width of a bar (in mm)

calcDimensions

public BarcodeDimension calcDimensions(java.lang.String msg)

Calculates the dimension of a barcode with the given message. The dimensions are dependant on the configuration of the barcode generator.

Specified by:

calcDimensions in interface BarcodeGenerator

Overrides:

calcDimensions in class AbstractBarcodeBean

Parameters:

msg - message to use for calculation.

Returns:

BarcodeDimension a BarcodeDimension object containing the barcode's dimensions

generateBarcode

public void generateBarcode(CanvasProvider canvas,
                            java.lang.String msg)

Generates a barcode using the given Canvas to render the barcode to its output format.

Specified by:

generateBarcode in interface BarcodeGenerator

Specified by:

generateBarcode in class AbstractBarcodeBean

Parameters:

canvas - CanvasProvider that the barcode is to be rendered on.

msg - message to encode