Package org.krysalis.barcode4j.impl.upcean

Class UPCEANCanvasLogicHandler

java.lang.Object
org.krysalis.barcode4j.impl.upcean.UPCEANCanvasLogicHandler
All Implemented Interfaces:
BarcodeLogicHandler, ClassicBarcodeLogicHandler
public class UPCEANCanvasLogicHandler extends Object implements ClassicBarcodeLogicHandler
Logic Handler implementation for painting on a Canvas. This is a special implementation for UPC and EAN barcodes.
Version:
$Id: UPCEANCanvasLogicHandler.java,v 1.3 2008-05-13 13:00:44 jmaerki Exp $
Author:
Jeremias Maerki

  • Constructor Details

    • UPCEANCanvasLogicHandler

      public UPCEANCanvasLogicHandler(AbstractBarcodeBean bcBean, Canvas canvas)
      Main constructor.
      Parameters:
      bcBean - the barcode implementation class
      canvas - the canvas to paint to

  • Method Details

    • startBarcode

      public void startBarcode(String msg, String formattedMsg)
      Description copied from interface: BarcodeLogicHandler
      This is always the first method called. It is called to inform the logic handler that a new barcode is about to be painted.
      Specified by:
      startBarcode in interface BarcodeLogicHandler
      Parameters:
      msg - full message to be encoded
      formattedMsg - message as it is to be presented in the human-readable part
      See Also:

    • endBarcode

      public void endBarcode()
      Description copied from interface: BarcodeLogicHandler
      This is always the last method called. It is called to inform the logic handler that the generation of barcode logic has stopped.
      Specified by:
      endBarcode in interface BarcodeLogicHandler
      See Also:

    • startBarGroup

      public void startBarGroup(BarGroup type, String submsg)
      Description copied from interface: ClassicBarcodeLogicHandler
      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.
      Specified by:
      startBarGroup in interface ClassicBarcodeLogicHandler
      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.
      See Also:

    • addBar

      public void addBar(boolean black, int width)
      Description copied from interface: ClassicBarcodeLogicHandler
      This method indicates a new bar to be painted.
      Specified by:
      addBar in interface ClassicBarcodeLogicHandler
      Parameters:
      black - True if the bar is to be painted black, False if white/transparent
      width - 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.
      See Also:

    • endBarGroup

      public void endBarGroup()
      Description copied from interface: ClassicBarcodeLogicHandler
      This method indicates the end of a previously started bar group. The method calls to startBarGroup and endBarGroup form a stack.
      Specified by:
      endBarGroup in interface ClassicBarcodeLogicHandler
      See Also: