org.krysalis.barcode4j
Interface ClassicBarcodeLogicHandler

All Superinterfaces:

BarcodeLogicHandler

All Known Subinterfaces:

TwoDimBarcodeLogicHandler

All Known Implementing Classes:

AbstractVariableHeightLogicHandler, DefaultCanvasLogicHandler, DefaultTwoDimCanvasLogicHandler, FourStateLogicHandler, ITF14CanvasLogicHandler, LoggingLogicHandlerProxy, POSTNETLogicHandler, UPCEANCanvasLogicHandler

public interface ClassicBarcodeLogicHandler
extends BarcodeLogicHandler

This interface defines methods to build classic 1D barcodes.

Version:

$Id: ClassicBarcodeLogicHandler.java,v 1.2 2004/09/04 20:25:54 jmaerki Exp $

Author:

Jeremias Maerki

Method Summary

void	addBar(boolean black, int weight) This method indicates a new bar to be painted.
void	endBarGroup() This method indicates the end of a previously started bar group.
void	startBarGroup(BarGroup type, java.lang.String submsg) This method is called when a new group of bars is about to start.

Methods inherited from interface org.krysalis.barcode4j.BarcodeLogicHandler

endBarcode, startBarcode

Method Detail

startBarGroup

void startBarGroup(BarGroup type,
                   java.lang.String submsg)

This method is called when a new group of bars is about to start. A group of bars may be generated by a character (or group of characters) of the message to be encoded or by a start/end control group.

Parameters:

type - a constant indicating the type of group. The meaning of the integer values is implementation-dependant.

submsg - In case of parts of the message to be encoded this parameter holds the character or characters being encoded.

addBar

void addBar(boolean black,
            int weight)

This method indicates a new bar to be painted.

Parameters:

black - True if the bar is to be painted black, False if white/transparent

weight - logical weight of the bar. Concrete implementations are free to define this to be height or width. For example, 1 may be interpreted as "narrow bar", 2 as "wide bar" for certain barcodes. While other barcodes might define 1 to be "short bar", 2 as "tall bar". Also, this should not be confused with the effective painting width, or the actual physical size of the bar.

endBarGroup

void endBarGroup()

This method indicates the end of a previously started bar group. The method calls to startBarGroup and endBarGroup form a stack.