Class OTFSubSetFile

java.lang.Object

org.apache.fop.fonts.truetype.OpenFont

org.apache.fop.fonts.truetype.OTFFile

org.apache.fop.fonts.truetype.OTFSubSetWriter

org.apache.fop.fonts.truetype.OTFSubSetFile

public class OTFSubSetFile
extends OTFSubSetWriter

Reads an OpenType CFF file and generates a subset The OpenType specification can be found at the Microsoft Typography site: http://www.microsoft.com/typography/otspec/

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	OTFSubSetFile.BytesNumber	A class used to store the last number operand and also it's size in bytes
private static class	OTFSubSetFile.FDIndexReference
(package private) static class	OTFSubSetFile.Offsets
(package private) static class	OTFSubSetFile.Type2Parser

Nested classes/interfaces inherited from class OpenFont

OpenFont.PostScriptVersion, OpenFont.UnicodeMapping

Field Summary

Fields

Modifier and Type	Field	Description
private static final String	ACCENT_CMD
protected CFFDataReader	cffReader	The CFF reader object used to read data and offsets from the original font file
protected String	embeddedName	The embedded name to change in the name table
protected List<List<byte[]>>	fdSubrs	For fonts which have an FDSelect or ROS flag in Top Dict, this is used to store the local subroutine indexes for each group as opposed to the above subsetLocalIndexSubr
protected Map<Integer,Integer>	gidToSID	A map of the new GID to SID used to construct the charset table
private static final int	GLOBAL_SUBROUTINE	The operator used to identify a global subroutine reference
protected CFFDataReader.CFFIndexData	globalIndexSubr
protected List<Integer>	globalUniques
private static final int	LOCAL_SUBROUTINE	The operator used to identify a local subroutine reference
protected CFFDataReader.CFFIndexData	localIndexSubr
protected List<Integer>	localUniques	A list of unique subroutines from the global / local subroutine indexes
private MultiByteFont	mbFont	The class used to represent this font
static final int	NUM_STANDARD_STRINGS	The number of standard strings in CFF
protected List<byte[]>	stringIndexData	An array used to hold the string index data for the subset font
protected List<byte[]>	subsetCharStringsIndex	A list of char string data for each glyph to be stored in the subset font
private Map<Integer, OTFSubSetFile.FDIndexReference>	subsetFDSelect	The subset FD Select table used to store the mappings between glyphs and their associated FDFont object which point to a private dict and local subroutines.
protected List<byte[]>	subsetGlobalIndexSubr
protected int	subsetGlobalSubrCount
protected Map<Integer,Integer>	subsetGlyphs	A map containing each glyph to be included in the subset with their existing and new GID's
protected List<byte[]>	subsetLocalIndexSubr	List of subroutines to write to the local / global indexes in the subset font
protected int	subsetLocalSubrCount	A store of the number of subroutines each global / local subroutine will store
private OTFSubSetFile.Type2Parser	type2Parser	The parser used to parse type2 charstring

Fields inherited from class OTFSubSetWriter

currentPos, output

Fields inherited from class OTFFile

fileFont

Fields inherited from class OpenFont

advancedTableReader, cid, dirTabs, embedFontName, ENC_BUF_SIZE, familyNames, fontFile, fullName, lastLoca, locaFormat, log, MAX_CHAR_CODE, mtxTab, nhmtx, notice, NTABS, numberOfGlyphs, postScriptName, subFamilyName, svgs, TRACE_ENABLED, unicodeMappings, useAdvanced, useKerning

Constructor Summary

Constructors

Constructor	Description
OTFSubSetFile()

Method Summary

Modifier and Type	Method	Description
private byte[]	constructNewRefData(int curDataPos, byte[] currentData, OTFSubSetFile.BytesNumber operand, int fullSubsetIndexSize, int curSubsetIndexSize, int[] operatorCode)
protected void	createCFF()
private void	createCharStringData()
protected void	createCharStringDataCID()
static byte[]	createNewRef(int newRef, int[] operatorCode, int forceLength, boolean isDict)
private int	getBias(int subrCount)
CFFDataReader	getCFFReader()	Returns the parsed CFF data for the original font.
private Map<Integer,Integer>	getFormat3Index()
private int	getNewRefForReference(int subrNumber, List<Integer> uniquesArray, CFFDataReader.CFFIndexData indexSubr, List<byte[]> subsetIndexSubr, int subrCount)
private int	getOffSize(int totLength)
private int	getSubrNumber(int numSubroutines, int operand)
private List<Object>	getType1Sequence(org.apache.fontbox.cff.Type1CharString type1CharString)
protected List<Integer>	getUsedFDFonts()
private boolean	isCharStringBeforeFD()
private void	mapChars(Map<Integer,Integer> usedGlyphs)
private void	preScanForSubsetIndexSize(byte[] data)
private void	preScanForSubsetIndexSize(CFFDataReader.CFFIndexData indexSubr, List<Integer> uniques)
private byte[]	readCharStringData(byte[] data, int subsetLocalSubrCount)
void	readFont(FontFileReader in, String embeddedName, MultiByteFont mbFont)	Reads a font.
(package private) void	readFont(FontFileReader in, String embeddedName, MultiByteFont mbFont, Map<Integer,Integer> usedGlyphs)	Reads and creates a subset of the font.
private byte[]	resizeToFitOpLen(byte[] fdPrivateDictByteData, CFFDataReader.DICTEntry subrs)
private Map<Integer,Integer>	sortByValue(Map<Integer,Integer> map)
protected List<Integer>	storeFDStrings(List<Integer> uniqueNewRefs)
protected void	updateCIDOffsets(OTFSubSetFile.Offsets offsets)
protected void	updateFixedOffsets(Map<String, CFFDataReader.DICTEntry> topDICT, OTFSubSetFile.Offsets offsets)
private void	updateOffset(byte[] out, int position, int length, int replacement)
private void	updateOffset(int position, int length, int replacement)
protected void	updateOffsets(OTFSubSetFile.Offsets offsets)
private void	writeCharsetTable(boolean cidFont)
protected byte[]	writeCIDCount(CFFDataReader.DICTEntry dictEntry)
protected List<Integer>	writeCIDDictsAndSubrs(List<Integer> uniqueNewRefs)
private int	writeFDArray(List<Integer> subsetFDFonts, List<Integer> fontNameSIDs)
protected int	writeFDArray(List<Integer> uniqueNewRefs, List<Integer> privateDictOffsets, List<Integer> fontNameSIDs)
protected void	writeFDSelect()
protected int	writeIndex(List<byte[]> dataArray)
protected int	writeIndex(List<byte[]> dataArray, int offSize)
protected void	writePrivateDict()
private byte[]	writeROSEntry(CFFDataReader.DICTEntry dictEntry)
private void	writeStringIndex()
protected int	writeTopDICT()
private byte[]	writeTopDictStringEntry(CFFDataReader.DICTEntry dictEntry)

Methods inherited from class OTFSubSetWriter

concatArray, getFontSubset, writeByte, writeBytes, writeCard16, writeThreeByteNumber, writeULong

Methods inherited from class OTFFile

getCFFData, initializeFont, isType1, readName, updateBBoxAndOffset

Methods inherited from class OpenFont

checkTTC, convertTTFUnit2PDFUnit, createCMaps, determineAscDesc, getAnsiKerning, getBBox, getBBoxRaw, getBoundingBoxes, getCapHeight, getCharSetName, getCharWidth, getCharWidthRaw, getCMaps, getCopyrightNotice, getDirectoryEntry, getEmbedFontName, getFamilyNames, getFirstChar, getFlags, getFontBBox, getFullName, getGDEF, getGlyphName, getGPOS, getGSUB, getItalicAngle, getKerning, getLastChar, getLowerCaseAscent, getLowerCaseDescent, getMtx, getNumGlyphs, getPadSize, getPostScriptName, getPostScriptVersion, getStemV, getStrikeoutPosition, getStrikeoutThickness, getSubFamilyName, getTTCnames, getUnderlinePosition, getUnderlineThickness, getWeightClass, getWidths, getXHeight, guessVerticalMetricsFromGlyphBBox, handleCharacterSpacing, hasAdvancedTable, initAnsiWidths, isCFF, isEmbeddable, main, printStuff, readCMAP, readDirTabs, readFont, readFont, readFontHeader, readHorizontalHeader, readHorizontalMetrics, readKerning, readOS2, readPCLT, readPostScript, seekTab, sortDirTabMap, stream

Methods inherited from class Object

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

Field Details

subsetGlyphs

protected Map<Integer,Integer> subsetGlyphs

A map containing each glyph to be included in the subset with their existing and new GID's

gidToSID

protected Map<Integer,Integer> gidToSID

A map of the new GID to SID used to construct the charset table

localIndexSubr

protected CFFDataReader.CFFIndexData localIndexSubr

globalIndexSubr

protected CFFDataReader.CFFIndexData globalIndexSubr

subsetLocalIndexSubr

protected List<byte[]> subsetLocalIndexSubr

List of subroutines to write to the local / global indexes in the subset font

subsetGlobalIndexSubr

protected List<byte[]> subsetGlobalIndexSubr

fdSubrs

protected List<List<byte[]>> fdSubrs

For fonts which have an FDSelect or ROS flag in Top Dict, this is used to store the local subroutine indexes for each group as opposed to the above subsetLocalIndexSubr

subsetFDSelect

private Map<Integer, OTFSubSetFile.FDIndexReference> subsetFDSelect

The subset FD Select table used to store the mappings between glyphs and their associated FDFont object which point to a private dict and local subroutines.

localUniques

protected List<Integer> localUniques

A list of unique subroutines from the global / local subroutine indexes

globalUniques

protected List<Integer> globalUniques

subsetLocalSubrCount

protected int subsetLocalSubrCount

A store of the number of subroutines each global / local subroutine will store

subsetGlobalSubrCount

protected int subsetGlobalSubrCount

subsetCharStringsIndex

protected List<byte[]> subsetCharStringsIndex

A list of char string data for each glyph to be stored in the subset font

embeddedName

protected String embeddedName

The embedded name to change in the name table

stringIndexData

protected List<byte[]> stringIndexData

An array used to hold the string index data for the subset font

cffReader

protected CFFDataReader cffReader

The CFF reader object used to read data and offsets from the original font file

mbFont

private MultiByteFont mbFont

The class used to represent this font

NUM_STANDARD_STRINGS

public static final int NUM_STANDARD_STRINGS

The number of standard strings in CFF

See Also:

• Constant Field Values

LOCAL_SUBROUTINE

private static final int LOCAL_SUBROUTINE

The operator used to identify a local subroutine reference

See Also:

• Constant Field Values

GLOBAL_SUBROUTINE

private static final int GLOBAL_SUBROUTINE

The operator used to identify a global subroutine reference

See Also:

• Constant Field Values

ACCENT_CMD

private static final String ACCENT_CMD

See Also:

• Constant Field Values

type2Parser

private OTFSubSetFile.Type2Parser type2Parser

The parser used to parse type2 charstring

Constructor Details

OTFSubSetFile

public OTFSubSetFile()
              throws IOException

Throws:

IOException

Method Details

readFont

public void readFont(FontFileReader in,
 String embeddedName,
 MultiByteFont mbFont)
              throws IOException

Description copied from class: OpenFont

Reads a font.

Overrides:

readFont in class OpenFont

Parameters:

in - FontFileReader to read from

Throws:

IOException - in case of an I/O problem

readFont

void readFont(FontFileReader in,
 String embeddedName,
 MultiByteFont mbFont,
 Map<Integer,Integer> usedGlyphs)
       throws IOException

Reads and creates a subset of the font.

Parameters:

in - FontFileReader to read from

embeddedName - Name to be checked for in the font file

usedGlyphs - Map of glyphs (glyphs has old index as (Integer) key and new index as (Integer) value)

Throws:

IOException - in case of an I/O problem

mapChars

private void mapChars(Map<Integer,Integer> usedGlyphs)
               throws IOException

Throws:

IOException

getType1Sequence

private List<Object> getType1Sequence(org.apache.fontbox.cff.Type1CharString type1CharString)

sortByValue

private Map<Integer,Integer> sortByValue(Map<Integer,Integer> map)

createCFF

protected void createCFF()
                  throws IOException

Throws:

IOException

writeFDArray

private int writeFDArray(List<Integer> subsetFDFonts,
 List<Integer> fontNameSIDs)
                  throws IOException

Throws:

IOException

isCharStringBeforeFD

private boolean isCharStringBeforeFD()

storeFDStrings

protected List<Integer> storeFDStrings(List<Integer> uniqueNewRefs)
                                throws IOException

Throws:

IOException

writeTopDICT

protected int writeTopDICT()
                    throws IOException

Throws:

IOException

writeROSEntry

private byte[] writeROSEntry(CFFDataReader.DICTEntry dictEntry)
                      throws IOException

Throws:

IOException

writeCIDCount

protected byte[] writeCIDCount(CFFDataReader.DICTEntry dictEntry)
                        throws IOException

Throws:

IOException

writeTopDictStringEntry

private byte[] writeTopDictStringEntry(CFFDataReader.DICTEntry dictEntry)
                                throws IOException

Throws:

IOException

writeStringIndex

private void writeStringIndex()
                       throws IOException

Throws:

IOException

createCharStringDataCID

protected void createCharStringDataCID()
                                throws IOException

Throws:

IOException

writeFDSelect

protected void writeFDSelect()

getFormat3Index

private Map<Integer,Integer> getFormat3Index()

getUsedFDFonts

protected List<Integer> getUsedFDFonts()

writeCIDDictsAndSubrs

protected List<Integer> writeCIDDictsAndSubrs(List<Integer> uniqueNewRefs)
                                       throws IOException

Throws:

IOException

resizeToFitOpLen

private byte[] resizeToFitOpLen(byte[] fdPrivateDictByteData,
 CFFDataReader.DICTEntry subrs)
                         throws IOException

Throws:

IOException

writeFDArray

protected int writeFDArray(List<Integer> uniqueNewRefs,
 List<Integer> privateDictOffsets,
 List<Integer> fontNameSIDs)
                    throws IOException

Throws:

IOException

createCharStringData

private void createCharStringData()
                           throws IOException

Throws:

IOException

preScanForSubsetIndexSize

private void preScanForSubsetIndexSize(byte[] data)
                                throws IOException

Throws:

IOException

preScanForSubsetIndexSize

private void preScanForSubsetIndexSize(CFFDataReader.CFFIndexData indexSubr,
 List<Integer> uniques)
                                throws IOException

Throws:

IOException

getSubrNumber

private int getSubrNumber(int numSubroutines,
 int operand)

readCharStringData

private byte[] readCharStringData(byte[] data,
 int subsetLocalSubrCount)
                           throws IOException

Throws:

IOException

getNewRefForReference

private int getNewRefForReference(int subrNumber,
 List<Integer> uniquesArray,
 CFFDataReader.CFFIndexData indexSubr,
 List<byte[]> subsetIndexSubr,
 int subrCount)
                           throws IOException

Throws:

IOException

getBias

private int getBias(int subrCount)

constructNewRefData

private byte[] constructNewRefData(int curDataPos,
 byte[] currentData,
 OTFSubSetFile.BytesNumber operand,
 int fullSubsetIndexSize,
 int curSubsetIndexSize,
 int[] operatorCode)
                            throws IOException

Throws:

IOException

createNewRef

public static byte[] createNewRef(int newRef,
 int[] operatorCode,
 int forceLength,
 boolean isDict)

writeIndex

protected int writeIndex(List<byte[]> dataArray)

writeIndex

protected int writeIndex(List<byte[]> dataArray,
 int offSize)

getOffSize

private int getOffSize(int totLength)

writeCharsetTable

private void writeCharsetTable(boolean cidFont)
                        throws IOException

Throws:

IOException

writePrivateDict

protected void writePrivateDict()
                         throws IOException

Throws:

IOException

updateOffsets

protected void updateOffsets(OTFSubSetFile.Offsets offsets)
                      throws IOException

Throws:

IOException

updateFixedOffsets

protected void updateFixedOffsets(Map<String, CFFDataReader.DICTEntry> topDICT,
 OTFSubSetFile.Offsets offsets)
                           throws IOException

Throws:

IOException

updateCIDOffsets

protected void updateCIDOffsets(OTFSubSetFile.Offsets offsets)
                         throws IOException

Throws:

IOException

updateOffset

private void updateOffset(int position,
 int length,
 int replacement)
                   throws IOException

Throws:

IOException

updateOffset

private void updateOffset(byte[] out,
 int position,
 int length,
 int replacement)

getCFFReader

public CFFDataReader getCFFReader()

Returns the parsed CFF data for the original font.

Returns:

The CFFDataReader contaiing the parsed data