Package eu.webtoolkit.jwt.thirdparty.qrcodegen

Class QrCode

java.lang.Object

eu.webtoolkit.jwt.thirdparty.qrcodegen.QrCode

public final class QrCode
extends Object

A QR Code symbol, which is a type of two-dimension barcode. Invented by Denso Wave and described in the ISO/IEC 18004 standard. Instances of this class represent an immutable square grid of dark and light cells. The class provides static factory functions to create a QR Code from text or binary data. The class covers the QR Code Model 2 specification, supporting all versions (sizes) from 1 to 40, all 4 error correction levels, and 4 character encoding modes.

Ways to create a QR Code object:

• High level: Take the payload data and call QrCode::encodeText() or QrCode::encodeBinary().
• Mid level: Custom-make the list of segments and call QrCode::encodeSegments().
• Low level: Custom-make the array of data codeword bytes (including segment headers and final padding, excluding error correction codewords), supply the appropriate version number, and call the QrCode() constructor. (Note that all ways require supplying the desired error correction level.)

Field Summary

Fields

Modifier and Type	Field	Description
static final int	MAX_VERSION
static final int	MIN_VERSION

Constructor Summary

Constructors

Constructor	Description
QrCode(int ver, Ecc ecl, List<Integer> dataCodewords, int msk)

Method Summary

Modifier and Type	Method	Description
static QrCode	encodeBinary(List<Integer> data, Ecc ecl)
static final QrCode	encodeSegments(List<QrSegment> segs, Ecc ecl)
static final QrCode	encodeSegments(List<QrSegment> segs, Ecc ecl, int minVersion)
static final QrCode	encodeSegments(List<QrSegment> segs, Ecc ecl, int minVersion, int maxVersion)
static final QrCode	encodeSegments(List<QrSegment> segs, Ecc ecl, int minVersion, int maxVersion, int mask)
static QrCode	encodeSegments(List<QrSegment> segs, Ecc ecl, int minVersion, int maxVersion, int mask, boolean boostEcl)
static QrCode	encodeText(String text, Ecc ecl)
Ecc	getErrorCorrectionLevel()
int	getMask()
boolean	getModule(int x, int y)
int	getSize()
int	getVersion()

Methods inherited from class java.lang.Object

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

Field Details

MIN_VERSION

public static final int MIN_VERSION

See Also:

• Constant Field Values

MAX_VERSION

public static final int MAX_VERSION

See Also:

• Constant Field Values

Constructor Details

QrCode

public QrCode(int ver,
 Ecc ecl,
 List<Integer> dataCodewords,
 int msk)

Method Details

encodeText

public static QrCode encodeText(String text,
 Ecc ecl)

encodeBinary

public static QrCode encodeBinary(List<Integer> data,
 Ecc ecl)

encodeSegments

public static QrCode encodeSegments(List<QrSegment> segs,
 Ecc ecl,
 int minVersion,
 int maxVersion,
 int mask,
 boolean boostEcl)

encodeSegments

public static final QrCode encodeSegments(List<QrSegment> segs,
 Ecc ecl)

encodeSegments

public static final QrCode encodeSegments(List<QrSegment> segs,
 Ecc ecl,
 int minVersion)

encodeSegments

public static final QrCode encodeSegments(List<QrSegment> segs,
 Ecc ecl,
 int minVersion,
 int maxVersion)

encodeSegments

public static final QrCode encodeSegments(List<QrSegment> segs,
 Ecc ecl,
 int minVersion,
 int maxVersion,
 int mask)

getVersion

public int getVersion()

getSize

public int getSize()

getErrorCorrectionLevel

public Ecc getErrorCorrectionLevel()

getMask

public int getMask()

getModule

public boolean getModule(int x,
 int y)