Package org.apache.fontbox.ttf

Class CmapSubtable

java.lang.Object

org.apache.fontbox.ttf.CmapSubtable

All Implemented Interfaces:

CmapLookup

public class CmapSubtable
extends java.lang.Object
implements CmapLookup

A "cmap" subtable.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	CmapSubtable.SubHeader	Class used to manage CMap - Format 2.

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.Map<java.lang.Integer,java.lang.Integer>	characterCodeToGlyphId
private int[]	glyphIdToCharacterCode
private java.util.Map<java.lang.Integer,java.util.List<java.lang.Integer>>	glyphIdToCharacterCodeMultiple
private static long	LEAD_OFFSET
private static org.apache.commons.logging.Log	LOG
private int	platformEncodingId
private int	platformId
private long	subTableOffset
private static long	SURROGATE_OFFSET

Constructor Summary

Constructors

Constructor	Description
CmapSubtable()

Method Summary

Modifier and Type	Method	Description
private void	buildGlyphIdToCharacterCodeLookup(int maxGlyphId)
private int	getCharCode(int gid)
java.util.List<java.lang.Integer>	getCharCodes(int gid)	Returns all possible character codes for the given gid, or null if there is none.
int	getGlyphId(int characterCode)	Returns the GlyphId linked with the given character code.
int	getPlatformEncodingId()
int	getPlatformId()
(package private) void	initData(TTFDataStream data)	This will read the required data from the stream.
(package private) void	initSubtable(CmapTable cmap, int numGlyphs, TTFDataStream data)	This will read the required data from the stream.
private int[]	newGlyphIdToCharacterCode(int size)	Workaround for the fact that glyphIdToCharacterCode doesn't distinguish between missing character codes and code 0.
(package private) void	processSubtype0(TTFDataStream data)	Initialize the CMapEntry when it is a subtype 0.
(package private) void	processSubtype10(TTFDataStream data, int numGlyphs)	Reads a format 10 subtable.
(package private) void	processSubtype12(TTFDataStream data, int numGlyphs)	Reads a format 12 subtable.
(package private) void	processSubtype13(TTFDataStream data, int numGlyphs)	Reads a format 13 subtable.
(package private) void	processSubtype14(TTFDataStream data, int numGlyphs)	Reads a format 14 subtable.
(package private) void	processSubtype2(TTFDataStream data, int numGlyphs)	Read a format 2 subtable.
(package private) void	processSubtype4(TTFDataStream data, int numGlyphs)	Reads a format 4 subtable.
(package private) void	processSubtype6(TTFDataStream data, int numGlyphs)	Reads a format 6 subtable.
(package private) void	processSubtype8(TTFDataStream data, int numGlyphs)	Reads a format 8 subtable.
void	setPlatformEncodingId(int platformEncodingIdValue)
void	setPlatformId(int platformIdValue)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final org.apache.commons.logging.Log LOG

LEAD_OFFSET

private static final long LEAD_OFFSET

See Also:

Constant Field Values

SURROGATE_OFFSET

private static final long SURROGATE_OFFSET

See Also:

Constant Field Values

platformId

private int platformId

platformEncodingId

private int platformEncodingId

subTableOffset

private long subTableOffset

glyphIdToCharacterCode

private int[] glyphIdToCharacterCode

glyphIdToCharacterCodeMultiple

private final java.util.Map<java.lang.Integer,java.util.List<java.lang.Integer>> glyphIdToCharacterCodeMultiple

characterCodeToGlyphId

private java.util.Map<java.lang.Integer,java.lang.Integer> characterCodeToGlyphId

Constructor Detail

CmapSubtable

public CmapSubtable()

Method Detail

initData

void initData(TTFDataStream data)
       throws java.io.IOException

This will read the required data from the stream.

Parameters:

data - The stream to read the data from.

Throws:

java.io.IOException - If there is an error reading the data.

initSubtable

void initSubtable(CmapTable cmap,
                  int numGlyphs,
                  TTFDataStream data)
           throws java.io.IOException

This will read the required data from the stream.

Parameters:

cmap - the CMAP this encoding belongs to.

numGlyphs - number of glyphs.

data - The stream to read the data from.

Throws:

java.io.IOException - If there is an error reading the data.

processSubtype8

void processSubtype8(TTFDataStream data,
                     int numGlyphs)
              throws java.io.IOException

Reads a format 8 subtable.

Parameters:

data - the data stream of the to be parsed ttf font

numGlyphs - number of glyphs to be read

Throws:

java.io.IOException - If there is an error parsing the true type font.

processSubtype10

void processSubtype10(TTFDataStream data,
                      int numGlyphs)
               throws java.io.IOException

Reads a format 10 subtable.

Parameters:

data - the data stream of the to be parsed ttf font

numGlyphs - number of glyphs to be read

Throws:

java.io.IOException - If there is an error parsing the true type font.

processSubtype12

void processSubtype12(TTFDataStream data,
                      int numGlyphs)
               throws java.io.IOException

Reads a format 12 subtable.

Parameters:

data - the data stream of the to be parsed ttf font

numGlyphs - number of glyphs to be read

Throws:

java.io.IOException - If there is an error parsing the true type font.

processSubtype13

void processSubtype13(TTFDataStream data,
                      int numGlyphs)
               throws java.io.IOException

Reads a format 13 subtable.

Parameters:

data - the data stream of the to be parsed ttf font

numGlyphs - number of glyphs to be read

Throws:

java.io.IOException - If there is an error parsing the true type font.

processSubtype14

void processSubtype14(TTFDataStream data,
                      int numGlyphs)
               throws java.io.IOException

Reads a format 14 subtable.

Parameters:

data - the data stream of the to be parsed ttf font

numGlyphs - number of glyphs to be read

Throws:

java.io.IOException - If there is an error parsing the true type font.

processSubtype6

void processSubtype6(TTFDataStream data,
                     int numGlyphs)
              throws java.io.IOException

Reads a format 6 subtable.

Parameters:

data - the data stream of the to be parsed ttf font

numGlyphs - number of glyphs to be read

Throws:

java.io.IOException - If there is an error parsing the true type font.

processSubtype4

void processSubtype4(TTFDataStream data,
                     int numGlyphs)
              throws java.io.IOException

Reads a format 4 subtable.

Parameters:

data - the data stream of the to be parsed ttf font

numGlyphs - number of glyphs to be read

Throws:

java.io.IOException - If there is an error parsing the true type font.

buildGlyphIdToCharacterCodeLookup

private void buildGlyphIdToCharacterCodeLookup(int maxGlyphId)

processSubtype2

void processSubtype2(TTFDataStream data,
                     int numGlyphs)
              throws java.io.IOException

Read a format 2 subtable.

Parameters:

data - the data stream of the to be parsed ttf font

numGlyphs - number of glyphs to be read

Throws:

java.io.IOException - If there is an error parsing the true type font.

processSubtype0

void processSubtype0(TTFDataStream data)
              throws java.io.IOException

Initialize the CMapEntry when it is a subtype 0.

Parameters:

data - the data stream of the to be parsed ttf font

Throws:

java.io.IOException - If there is an error parsing the true type font.

newGlyphIdToCharacterCode

private int[] newGlyphIdToCharacterCode(int size)

Workaround for the fact that glyphIdToCharacterCode doesn't distinguish between missing character codes and code 0.

getPlatformEncodingId

public int getPlatformEncodingId()

Returns:

Returns the platformEncodingId.

setPlatformEncodingId

public void setPlatformEncodingId(int platformEncodingIdValue)

Parameters:

platformEncodingIdValue - The platformEncodingId to set.

getPlatformId

public int getPlatformId()

Returns:

Returns the platformId.

setPlatformId

public void setPlatformId(int platformIdValue)

Parameters:

platformIdValue - The platformId to set.

getGlyphId

public int getGlyphId(int characterCode)

Returns the GlyphId linked with the given character code.

Specified by:

getGlyphId in interface CmapLookup

Parameters:

characterCode - the given character code to be mapped

Returns:

glyphId the corresponding glyph id for the given character code

getCharCode

private int getCharCode(int gid)

getCharCodes

public java.util.List<java.lang.Integer> getCharCodes(int gid)

Returns all possible character codes for the given gid, or null if there is none.

Specified by:

getCharCodes in interface CmapLookup

Parameters:

gid - glyph id

Returns:

a list with all character codes the given gid maps to

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object