Class Version

java.lang.Object

com.itextpdf.barcodes.qrcode.Version

final class Version
extends Object

See ISO 18004:2006 Annex D.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	Version.ECB	Encapsualtes the parameters for one error-correction block in one symbol version.
static final class	Version.ECBlocks	Encapsulates a set of error-correction blocks in one symbol version.

Field Summary

Fields

Modifier and Type	Field	Description
private final int[]	alignmentPatternCenters
private final Version.ECBlocks[]	ecBlocks
private final int	totalCodewords
private static final int[]	VERSION_DECODE_INFO	See ISO 18004:2006 Annex D.
private final int	versionNumber
private static final Version[]	VERSIONS

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Version(int versionNumber, int[] alignmentPatternCenters, Version.ECBlocks ecBlocks1, Version.ECBlocks ecBlocks2, Version.ECBlocks ecBlocks3, Version.ECBlocks ecBlocks4)

Method Summary

Modifier and Type	Method	Description
(package private) BitMatrix	buildFunctionPattern()	Build the function pattern, See ISO 18004:2006 Annex E.
private static Version[]	buildVersions()	See ISO 18004:2006 6.5.1 Table 9.
(package private) static Version	decodeVersionInformation(int versionBits)	Decode the version information.
int[]	getAlignmentPatternCenters()
int	getDimensionForVersion()
Version.ECBlocks	getECBlocksForLevel(ErrorCorrectionLevel ecLevel)
static Version	getProvisionalVersionForDimension(int dimension)	Deduces version information purely from QR Code dimensions.
int	getTotalCodewords()
static Version	getVersionForNumber(int versionNumber)
int	getVersionNumber()
String	toString()

Methods inherited from class Object

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

Field Details

VERSION_DECODE_INFO

private static final int[] VERSION_DECODE_INFO

See ISO 18004:2006 Annex D. Element i represents the raw version bits that specify version i + 7

VERSIONS

private static final Version[] VERSIONS

versionNumber

private final int versionNumber

alignmentPatternCenters

private final int[] alignmentPatternCenters

ecBlocks

private final Version.ECBlocks[] ecBlocks

totalCodewords

private final int totalCodewords

Constructor Details

Version

private Version(int versionNumber,
 int[] alignmentPatternCenters,
 Version.ECBlocks ecBlocks1,
 Version.ECBlocks ecBlocks2,
 Version.ECBlocks ecBlocks3,
 Version.ECBlocks ecBlocks4)

Method Details

getVersionNumber

public int getVersionNumber()

Returns:

the version number

getAlignmentPatternCenters

public int[] getAlignmentPatternCenters()

Returns:

int[] containing the positions of the alignment pattern centers

getTotalCodewords

public int getTotalCodewords()

Returns:

total number of code words

getDimensionForVersion

public int getDimensionForVersion()

Returns:

the square dimension for the current version number

getECBlocksForLevel

public Version.ECBlocks getECBlocksForLevel(ErrorCorrectionLevel ecLevel)

Parameters:

ecLevel - error correction level

Returns:

the number of EC blocks for the given error correction level

getProvisionalVersionForDimension

public static Version getProvisionalVersionForDimension(int dimension)

Deduces version information purely from QR Code dimensions.

Parameters:

dimension - dimension in modules

Returns:

Version for a QR Code of that dimension

getVersionForNumber

public static Version getVersionForNumber(int versionNumber)

Parameters:

versionNumber - Version number

Returns:

the version for the given version number

decodeVersionInformation

static Version decodeVersionInformation(int versionBits)

Decode the version information.

Parameters:

versionBits - bits stored as int containing

Returns:

Version decoded from the versionBits

buildFunctionPattern

BitMatrix buildFunctionPattern()

Build the function pattern, See ISO 18004:2006 Annex E.

Returns:

Bitmatrix containing the pattern

toString

public String toString()

Overrides:

toString in class Object

Returns:

The version number as a string

buildVersions

private static Version[] buildVersions()

See ISO 18004:2006 6.5.1 Table 9.