Parameters of 1D Barcode Generation
Aspose.BarCode for Python via Java enables customizing various parameters that are specific for 1D barcode generation. Particularly for 1D barcode standards, developers can adjust the following display properties: the height of bars, the mode of bar filling, the wide-to-narrow ratio, and the automatic correction of invalid barcode text.
This article describes how to manage these properties using specified classes and properties of the library.
Setting Bar Height
Aspose.BarCode for Python via Java allows adjusting the height of bars for 1D single-row barcodes. This can be done only when AutoSizeMode is set to AutoSizeMode.NONE. In this case, regardless of the value specified through the setXDimension method, the bar height can be regulated using the setBarHeight method of class BarcodeParameters. This method is not suitable for to multiple-row barcodes and 2D barcodes.
|Is Set to 40 Pixels
|Is Set to 80 Pixels
Bar Filling Modes
For 1D barcodes, Aspose.BarCode for Python via Java provides a specific mode to generate barcodes with empty bars instead of filled ones. Such a modification can be done using the setFilledBars method of class BarcodeParameters. This property is set to True by default and is valid only for 1D barcodes.
Setting Wide-to-Narrow Ratio
Two-width 1D barcodes are based on the binary code principle, meaning that information is encoded using bars and spaces with two options of width: wide and narrow. Two-width barcode symbologies include the following: Codabar, Code 11, Code 32, Code 39, DataLogic 2-of-5, IATA 2-of-5, Interleaved 2-of-5, ITF 6, ITF 14, Matrix 2-of-5, MSI, OPC, PZN, Standard 2-of-5, and VIN.
In Aspose.BarCode for Python via Java, the wide-to-narrow ratio defines the relation between the width of wide and narrow elements. It can be set using the setWideNarrowRatio method of class BarcodeParameters. The larger if the value of the wide-to-narrow ratio, the larger is the width of the generated barcode. However, the readability also improves with an increase in this parameter. By default, WideNarrowRatio is set to 3.
|Is Set to 2
|Is Set to 5
Handling Exception on Incorrect Barcode Text
In case when a barcode has not been created correctly due to invalid barcode text, by default, the library can generate additional dummy data to bring the barcode into line with the standard or delete conflicting characters. Thereafter barcode generation is considered successful.
Developers can change this behaviour by using the setThrowExceptionWhenCodeTextIncorrect method of BarcodeParameters. When this property is enabled, an exception is thrown if the barcode text has been found incorrect or incomplete.
Barcode Text Correctness
Correct with Valid Barcode Text
Adjusted with Invalid Barcode Text