Class Woff2Dec

java.lang.Object

com.itextpdf.io.font.woff2.Woff2Dec

class Woff2Dec
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	Woff2Dec.Checksums
private static class	Woff2Dec.CompositeGlyphInfo
private static class	Woff2Dec.RebuildMetadata
private static class	Woff2Dec.StreamInfo
private static class	Woff2Dec.TableChecksumInfo
private static class	Woff2Dec.TtcFont
private static class	Woff2Dec.Woff2FontInfo	Accumulates data we may need to reconstruct a single font.
private static class	Woff2Dec.Woff2Header

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	FLAG_ARG_1_AND_2_ARE_WORDS
private static final int	FLAG_MORE_COMPONENTS
private static final int	FLAG_WE_HAVE_A_SCALE
private static final int	FLAG_WE_HAVE_A_TWO_BY_TWO
private static final int	FLAG_WE_HAVE_AN_X_AND_Y_SCALE
private static final int	FLAG_WE_HAVE_INSTRUCTIONS
private static final int	kDefaultGlyphBuf
private static final int	kEndPtsOfContoursOffset
private static final int	kGlyfOnCurve
private static final int	kGlyfRepeat
private static final int	kGlyfThisXIsSame
private static final int	kGlyfThisYIsSame
private static final int	kGlyfXShort
private static final int	kGlyfYShort
private static final float	kMaxPlausibleCompressionRatio

Constructor Summary

Constructors

Constructor	Description
Woff2Dec()

Method Summary

Modifier and Type	Method	Description
private static void	computeBbox(int n_points, Woff2Common.Point[] points, byte[] dst)
private static int	computeOffsetToFirstTable(Woff2Dec.Woff2Header hdr)
static int	computeWoff2FinalSize(byte[] data, int length)
static void	convertWoff2ToTtf(byte[] data, int length, Woff2Out out)
private static Woff2Common.Table	findTable(ArrayList<Woff2Common.Table> tables, int tag)
private static void	pad4(Woff2Out out)
private static short	readNumHMetrics(byte[] data, int offset, int data_length)
private static void	readTableDirectory(Buffer file, Woff2Common.Table[] tables, int num_tables)
private static void	readWoff2Header(byte[] data, int length, Woff2Dec.Woff2Header hdr)
private static void	reconstructFont(byte[] transformed_buf, int transformed_buf_offset, int transformed_buf_size, Woff2Dec.RebuildMetadata metadata, Woff2Dec.Woff2Header hdr, int font_index, Woff2Out out)
private static Woff2Dec.Checksums	reconstructGlyf(byte[] data, int data_offset, Woff2Common.Table glyf_table, int glyph_checksum, Woff2Common.Table loca_table, int loca_checksum, Woff2Dec.Woff2FontInfo info, Woff2Out out)
private static int	reconstructTransformedHmtx(byte[] transformed_buf, int transformed_offset, int transformed_size, int num_glyphs, int num_hmetrics, short[] x_mins, Woff2Out out)
private static Woff2Dec.CompositeGlyphInfo	sizeOfComposite(Buffer composite_stream)
private static int	storeLoca(int[] loca_values, int index_format, Woff2Out out)
private static int	storeOffsetTable(byte[] result, int offset, int flavor, int num_tables)
private static int	storePoints(int n_points, Woff2Common.Point[] points, int n_contours, int instruction_length, byte[] dst, int dst_size)
private static int	storeTableEntry(byte[] result, int offset, int tag)
private static ArrayList<Woff2Common.Table>	tables(Woff2Dec.Woff2Header hdr, int font_index)
private static int	tripletDecode(byte[] data, int flags_in_offset, int in_offset, int in_size, int n_points, Woff2Common.Point[] result)
private static int	withSign(int flag, int baseval)
private static void	woff2Uncompress(byte[] dst_buf, int dst_offset, int dst_length, byte[] src_buf, int src_offset, int src_length)
private static void	writeHeaders(byte[] data, int length, Woff2Dec.RebuildMetadata metadata, Woff2Dec.Woff2Header hdr, Woff2Out out)

Methods inherited from class Object

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

Field Details

kGlyfOnCurve

private static final int kGlyfOnCurve

See Also:

• Constant Field Values

kGlyfXShort

private static final int kGlyfXShort

See Also:

• Constant Field Values

kGlyfYShort

private static final int kGlyfYShort

See Also:

• Constant Field Values

kGlyfRepeat

private static final int kGlyfRepeat

See Also:

• Constant Field Values

kGlyfThisXIsSame

private static final int kGlyfThisXIsSame

See Also:

• Constant Field Values

kGlyfThisYIsSame

private static final int kGlyfThisYIsSame

See Also:

• Constant Field Values

FLAG_ARG_1_AND_2_ARE_WORDS

private static final int FLAG_ARG_1_AND_2_ARE_WORDS

See Also:

• Constant Field Values

FLAG_WE_HAVE_A_SCALE

private static final int FLAG_WE_HAVE_A_SCALE

See Also:

• Constant Field Values

FLAG_MORE_COMPONENTS

private static final int FLAG_MORE_COMPONENTS

See Also:

• Constant Field Values

FLAG_WE_HAVE_AN_X_AND_Y_SCALE

private static final int FLAG_WE_HAVE_AN_X_AND_Y_SCALE

See Also:

• Constant Field Values

FLAG_WE_HAVE_A_TWO_BY_TWO

private static final int FLAG_WE_HAVE_A_TWO_BY_TWO

See Also:

• Constant Field Values

FLAG_WE_HAVE_INSTRUCTIONS

private static final int FLAG_WE_HAVE_INSTRUCTIONS

See Also:

• Constant Field Values

kEndPtsOfContoursOffset

private static final int kEndPtsOfContoursOffset

See Also:

• Constant Field Values

kDefaultGlyphBuf

private static final int kDefaultGlyphBuf

See Also:

• Constant Field Values

kMaxPlausibleCompressionRatio

private static final float kMaxPlausibleCompressionRatio

See Also:

• Constant Field Values

Constructor Details

Woff2Dec

Woff2Dec()

Method Details

withSign

private static int withSign(int flag,
 int baseval)

tripletDecode

private static int tripletDecode(byte[] data,
 int flags_in_offset,
 int in_offset,
 int in_size,
 int n_points,
 Woff2Common.Point[] result)

storePoints

private static int storePoints(int n_points,
 Woff2Common.Point[] points,
 int n_contours,
 int instruction_length,
 byte[] dst,
 int dst_size)

computeBbox

private static void computeBbox(int n_points,
 Woff2Common.Point[] points,
 byte[] dst)

sizeOfComposite

private static Woff2Dec.CompositeGlyphInfo sizeOfComposite(Buffer composite_stream)

pad4

private static void pad4(Woff2Out out)

storeLoca

private static int storeLoca(int[] loca_values,
 int index_format,
 Woff2Out out)

reconstructGlyf

private static Woff2Dec.Checksums reconstructGlyf(byte[] data,
 int data_offset,
 Woff2Common.Table glyf_table,
 int glyph_checksum,
 Woff2Common.Table loca_table,
 int loca_checksum,
 Woff2Dec.Woff2FontInfo info,
 Woff2Out out)

findTable

private static Woff2Common.Table findTable(ArrayList<Woff2Common.Table> tables,
 int tag)

readNumHMetrics

private static short readNumHMetrics(byte[] data,
 int offset,
 int data_length)

reconstructTransformedHmtx

private static int reconstructTransformedHmtx(byte[] transformed_buf,
 int transformed_offset,
 int transformed_size,
 int num_glyphs,
 int num_hmetrics,
 short[] x_mins,
 Woff2Out out)

woff2Uncompress

private static void woff2Uncompress(byte[] dst_buf,
 int dst_offset,
 int dst_length,
 byte[] src_buf,
 int src_offset,
 int src_length)

readTableDirectory

private static void readTableDirectory(Buffer file,
 Woff2Common.Table[] tables,
 int num_tables)

storeOffsetTable

private static int storeOffsetTable(byte[] result,
 int offset,
 int flavor,
 int num_tables)

storeTableEntry

private static int storeTableEntry(byte[] result,
 int offset,
 int tag)

computeOffsetToFirstTable

private static int computeOffsetToFirstTable(Woff2Dec.Woff2Header hdr)

tables

private static ArrayList<Woff2Common.Table> tables(Woff2Dec.Woff2Header hdr,
 int font_index)

reconstructFont

private static void reconstructFont(byte[] transformed_buf,
 int transformed_buf_offset,
 int transformed_buf_size,
 Woff2Dec.RebuildMetadata metadata,
 Woff2Dec.Woff2Header hdr,
 int font_index,
 Woff2Out out)

readWoff2Header

private static void readWoff2Header(byte[] data,
 int length,
 Woff2Dec.Woff2Header hdr)

writeHeaders

private static void writeHeaders(byte[] data,
 int length,
 Woff2Dec.RebuildMetadata metadata,
 Woff2Dec.Woff2Header hdr,
 Woff2Out out)

computeWoff2FinalSize

public static int computeWoff2FinalSize(byte[] data,
 int length)

convertWoff2ToTtf

public static void convertWoff2ToTtf(byte[] data,
 int length,
 Woff2Out out)