com.itextpdf.io.font

Class CFFFont

java.lang.Object

com.itextpdf.io.font.CFFFont

Direct Known Subclasses:

CFFFontSubset

public class CFFFont
extends Object

Class containing base Compact Font Format functionality

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	CFFFont.DictNumberItem A dictionary number on the list.
protected static class	CFFFont.DictOffsetItem An unknown offset in a dictionary for the list.
protected class	CFFFont.Font Represents font contained by the CFF font in a FontSet.
protected static class	CFFFont.IndexBaseItem
protected static class	CFFFont.IndexMarkerItem
protected static class	CFFFont.IndexOffsetItem An index-offset item for the list.
protected static class	CFFFont.Item List items for the linked list that builds the new CID font.
protected static class	CFFFont.MarkerItem An offset-marker item for the list.
protected static class	CFFFont.OffsetItem An offset item, representing a data object.
protected static class	CFFFont.RangeItem A range item.
protected static class	CFFFont.StringItem A String item
protected static class	CFFFont.SubrMarkerItem
protected static class	CFFFont.UInt16Item A SID or Card16 item.
protected static class	CFFFont.UInt24Item Card24 item.
protected static class	CFFFont.UInt32Item A Card32 item.
protected static class	CFFFont.UInt8Item A Card8 item.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	arg_count
protected Object[]	args
protected RandomAccessFileOrArray	buf A random Access File or an array
protected CFFFont.Font[]	fonts
protected int	gsubrIndexOffset
protected int[]	gsubrOffsets
protected String	key
protected int	nameIndexOffset
protected int[]	nameOffsets
protected int	stringIndexOffset
protected int[]	stringOffsets
protected int	topdictIndexOffset
protected int[]	topdictOffsets

Constructor Summary

Constructors

Constructor and Description
CFFFont(byte[] cff) Creates a new CFF font instance from CFF font data.

Method Summary

Modifier and Type	Method and Description
boolean	exists(String fontName) Checks for font existence in FontSet.
byte[]	getCID(String fontName) Gets a single CID font.
protected void	getDictItem()
protected CFFFont.RangeItem	getEntireIndexRange(int indexOffset) A utility that creates a range item for an entire index
String[]	getNames() Gets all font names from FontSet table.
String	getString(char sid) Gets string from INDEX structure which corresponds to provided SID.
boolean	isCID() Determines whether the first font in FontSet is CID font.
boolean	isCID(String fontName) Determines whether specified font is CID font.

Methods inherited from class java.lang.Object

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

Field Detail

key

protected String key

args

protected Object[] args

arg_count

protected int arg_count

buf

protected RandomAccessFileOrArray buf

A random Access File or an array

nameIndexOffset

protected int nameIndexOffset

topdictIndexOffset

protected int topdictIndexOffset

stringIndexOffset

protected int stringIndexOffset

gsubrIndexOffset

protected int gsubrIndexOffset

nameOffsets

protected int[] nameOffsets

topdictOffsets

protected int[] topdictOffsets

stringOffsets

protected int[] stringOffsets

gsubrOffsets

protected int[] gsubrOffsets

fonts

protected CFFFont.Font[] fonts

Constructor Detail

CFFFont

public CFFFont(byte[] cff)

Creates a new CFF font instance from CFF font data.

Parameters:

cff - cff font binary data

Method Detail

getString

public String getString(char sid)

Gets string from INDEX structure which corresponds to provided SID.

Parameters:

sid - 2-byte string identifier

Returns:

string value

getDictItem

protected void getDictItem()

getEntireIndexRange

protected CFFFont.RangeItem getEntireIndexRange(int indexOffset)

A utility that creates a range item for an entire index

Parameters:

indexOffset - where the index is

Returns:

a range item representing the entire index

getCID

public byte[] getCID(String fontName)

Gets a single CID font. The PDF architecture (1.4) supports 16-bit strings only with CID CFF fonts, not in Type-1 CFF fonts, so we convert the font to CID if it is in the Type-1 format. Two other tasks that we need to do are to select only a single font from the CFF package (this again is a PDF restriction) and to subset the CharStrings glyph description.

Parameters:

fontName - name of the font

Returns:

byte array represents the CID font

isCID

public boolean isCID()

Determines whether the first font in FontSet is CID font.

Returns:

true if font is CID, false otherwise

isCID

public boolean isCID(String fontName)

Determines whether specified font is CID font.

Parameters:

fontName - font name to check in fonts table

Returns:

true if specified font is CID, false otherwise

exists

public boolean exists(String fontName)

Checks for font existence in FontSet.

Parameters:

fontName - font name to search for

Returns:

true if font exists in FontSet, false otherwise

getNames

public String[] getNames()

Gets all font names from FontSet table.

Returns:

font names contained by this CFF font