Package com.itextpdf.text.pdf.qrcode

Class MatrixUtil

java.lang.Object

com.itextpdf.text.pdf.qrcode.MatrixUtil

public final class MatrixUtil
extends Object

Since:

5.0.2

Field Summary

Fields

Modifier and Type	Field	Description
private static final int[][]	HORIZONTAL_SEPARATION_PATTERN
private static final int[][]	POSITION_ADJUSTMENT_PATTERN
private static final int[][]	POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE
private static final int[][]	POSITION_DETECTION_PATTERN
private static final int[][]	TYPE_INFO_COORDINATES
private static final int	TYPE_INFO_MASK_PATTERN
private static final int	TYPE_INFO_POLY
private static final int	VERSION_INFO_POLY
private static final int[][]	VERTICAL_SEPARATION_PATTERN

Constructor Summary

Constructors

Modifier	Constructor	Description
private	MatrixUtil()

Method Summary

Modifier and Type	Method	Description
static void	buildMatrix(BitVector dataBits, ErrorCorrectionLevel ecLevel, int version, int maskPattern, ByteMatrix matrix)
static int	calculateBCHCode(int value, int poly)
static void	clearMatrix(ByteMatrix matrix)
static void	embedBasicPatterns(int version, ByteMatrix matrix)
private static void	embedDarkDotAtLeftBottomCorner(ByteMatrix matrix)
static void	embedDataBits(BitVector dataBits, int maskPattern, ByteMatrix matrix)
private static void	embedHorizontalSeparationPattern(int xStart, int yStart, ByteMatrix matrix)
private static void	embedPositionAdjustmentPattern(int xStart, int yStart, ByteMatrix matrix)
private static void	embedPositionDetectionPattern(int xStart, int yStart, ByteMatrix matrix)
private static void	embedPositionDetectionPatternsAndSeparators(ByteMatrix matrix)
private static void	embedTimingPatterns(ByteMatrix matrix)
static void	embedTypeInfo(ErrorCorrectionLevel ecLevel, int maskPattern, ByteMatrix matrix)
private static void	embedVerticalSeparationPattern(int xStart, int yStart, ByteMatrix matrix)
static int	findMSBSet(int value)
private static boolean	isEmpty(int value)
private static boolean	isValidValue(int value)
static void	makeTypeInfoBits(ErrorCorrectionLevel ecLevel, int maskPattern, BitVector bits)
static void	makeVersionInfoBits(int version, BitVector bits)
private static void	maybeEmbedPositionAdjustmentPatterns(int version, ByteMatrix matrix)
static void	maybeEmbedVersionInfo(int version, ByteMatrix matrix)

Methods inherited from class java.lang.Object

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

Field Details

POSITION_DETECTION_PATTERN

private static final int[][] POSITION_DETECTION_PATTERN

HORIZONTAL_SEPARATION_PATTERN

private static final int[][] HORIZONTAL_SEPARATION_PATTERN

VERTICAL_SEPARATION_PATTERN

private static final int[][] VERTICAL_SEPARATION_PATTERN

POSITION_ADJUSTMENT_PATTERN

private static final int[][] POSITION_ADJUSTMENT_PATTERN

POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE

private static final int[][] POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE

TYPE_INFO_COORDINATES

private static final int[][] TYPE_INFO_COORDINATES

VERSION_INFO_POLY

private static final int VERSION_INFO_POLY

See Also:

• Constant Field Values

TYPE_INFO_POLY

private static final int TYPE_INFO_POLY

See Also:

• Constant Field Values

TYPE_INFO_MASK_PATTERN

private static final int TYPE_INFO_MASK_PATTERN

See Also:

• Constant Field Values

Constructor Details

MatrixUtil

private MatrixUtil()

Method Details

clearMatrix

public static void clearMatrix(ByteMatrix matrix)

buildMatrix

public static void buildMatrix(BitVector dataBits,
 ErrorCorrectionLevel ecLevel,
 int version,
 int maskPattern,
 ByteMatrix matrix)
                        throws WriterException

Throws:

WriterException

embedBasicPatterns

public static void embedBasicPatterns(int version,
 ByteMatrix matrix)
                               throws WriterException

Throws:

WriterException

embedTypeInfo

public static void embedTypeInfo(ErrorCorrectionLevel ecLevel,
 int maskPattern,
 ByteMatrix matrix)
                          throws WriterException

Throws:

WriterException

maybeEmbedVersionInfo

public static void maybeEmbedVersionInfo(int version,
 ByteMatrix matrix)
                                  throws WriterException

Throws:

WriterException

embedDataBits

public static void embedDataBits(BitVector dataBits,
 int maskPattern,
 ByteMatrix matrix)
                          throws WriterException

Throws:

WriterException

findMSBSet

public static int findMSBSet(int value)

calculateBCHCode

public static int calculateBCHCode(int value,
 int poly)

makeTypeInfoBits

public static void makeTypeInfoBits(ErrorCorrectionLevel ecLevel,
 int maskPattern,
 BitVector bits)
                             throws WriterException

Throws:

WriterException

makeVersionInfoBits

public static void makeVersionInfoBits(int version,
 BitVector bits)
                                throws WriterException

Throws:

WriterException

isEmpty

private static boolean isEmpty(int value)

isValidValue

private static boolean isValidValue(int value)

embedTimingPatterns

private static void embedTimingPatterns(ByteMatrix matrix)
                                 throws WriterException

Throws:

WriterException

embedDarkDotAtLeftBottomCorner

private static void embedDarkDotAtLeftBottomCorner(ByteMatrix matrix)
                                            throws WriterException

Throws:

WriterException

embedHorizontalSeparationPattern

private static void embedHorizontalSeparationPattern(int xStart,
 int yStart,
 ByteMatrix matrix)
                                              throws WriterException

Throws:

WriterException

embedVerticalSeparationPattern

private static void embedVerticalSeparationPattern(int xStart,
 int yStart,
 ByteMatrix matrix)
                                            throws WriterException

Throws:

WriterException

embedPositionAdjustmentPattern

private static void embedPositionAdjustmentPattern(int xStart,
 int yStart,
 ByteMatrix matrix)
                                            throws WriterException

Throws:

WriterException

embedPositionDetectionPattern

private static void embedPositionDetectionPattern(int xStart,
 int yStart,
 ByteMatrix matrix)
                                           throws WriterException

Throws:

WriterException

embedPositionDetectionPatternsAndSeparators

private static void embedPositionDetectionPatternsAndSeparators(ByteMatrix matrix)
                                                         throws WriterException

Throws:

WriterException

maybeEmbedPositionAdjustmentPatterns

private static void maybeEmbedPositionAdjustmentPatterns(int version,
 ByteMatrix matrix)
                                                  throws WriterException

Throws:

WriterException