Class Type1CFont

java.lang.Object

org.openpdf.renderer.font.PDFFont

org.openpdf.renderer.font.OutlineFont

org.openpdf.renderer.font.Type1CFont

public class Type1CFont
extends OutlineFont

A representation, with parser, of an Adobe Type 1C font. You can find information about CFF and Type 1C font encoding in http://partners.adobe.com/public/developer/en/font/5176.CFF.pdf and http://partners.adobe.com/public/developer/en/font/5177.Type2.pdf

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	Type1CFont.Range	A range.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) AffineTransform	at
(package private) int	charsetbase
(package private) int	charstringbase
(package private) int	charstringtype
(package private) String[]	chr2name
(package private) static int	CMD
(package private) byte[]	data
(package private) int[]	encoding
(package private) int	encodingbase
(package private) static int	FLT
(package private) float	fnum
(package private) String	fontname
(package private) int[]	glyphnames
(package private) int	gsubrbase
(package private) int	gsubrsoffset
(package private) int	lsubrbase
(package private) int	lsubrsoffset
(package private) String[]	names
(package private) int	nglyphs
(package private) int	num
(package private) static int	NUM
(package private) int	pos
(package private) int	privatebase
(package private) int	privatesize
(package private) float[]	stack
(package private) int	stackptr
(package private) int	stemhints
(package private) byte[]	subrs
(package private) float[]	temps
(package private) int	type

Constructor Summary

Constructors

Constructor	Description
Type1CFont(String baseFont, PDFObject src, PDFFontDescriptor descriptor)	create a new Type1CFont based on a font data stream and a descriptor

Method Summary

Modifier and Type	Method	Description
private void	buildAccentChar(float x, float y, char b, char a, GeneralPath gp)	build an accented character out of two pre-defined glyphs.
int	calcoffset(int base)	calculate an offset code for a dictionary.
(package private) Type1CFont.Range	getIndexEntry(int index, int id)	Get the range of a particular index in a dictionary.
int	getIndexSize(int loc)	get the size of the dictionary located within the stream at some offset.
private int	getNameIndex(String name)	get the index of a particular name.
protected GeneralPath	getOutline(char src, float width)	Get a glyph outline by character code Note this method must always return an outline
protected GeneralPath	getOutline(String name, float width)	Get a glyph outline by name
String	getSID(int id)	get the name associated with an ID.
int	getTableLength(int loc)	return the number of entries in an Index table.
private void	parse()	parse the font data.
(package private) void	parseGlyph(Type1CFont.Range r, GeneralPath gp, FlPoint pt)	parse a glyph defined in a particular range
private void	printData()	a debug method for printing the data
private int	readByte()	read the next byte from the stream
private int	readCommand(boolean charstring)	read a complete command.
private void	readDict(Type1CFont.Range r)	read a dictionary that exists within some range, parsing the entries within the dictionary.
private void	readEncodingData(int base)	parse information about the encoding of this file.
void	readFNum()	read the next funky floating point number from the input stream.
private GeneralPath	readGlyph(int base, int offset)	Read the data for a glyph from the glyph table, and transform it based on the current transform.
private void	readGlyphNames(int base)	read the names of the glyphs.
private int	readInt(int len)	read an integer from the input stream
private void	readNames(int base)	read a list of names
private int	readNext(boolean charstring)	read the next decoded value from the stream
private String	safe(String src)	convert a string to one in which any non-printable bytes are replaced by "invalid input: '<'###>" where ## is the value of the byte.

Methods inherited from class OutlineFont

getCharCount, getDefaultWidth, getFirstChar, getGlyph, getLastChar, getWidth

Methods inherited from class PDFFont

equals, getBaseFont, getCachedGlyph, getDescriptor, getEncoding, getFont, getGlyphs, getSubtype, getUnicodeMap, hashCode, setBaseFont, setDescriptor, setEncoding, setSubtype, setUnicodeMap, toString

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

chr2name

String[] chr2name

data

byte[] data

pos

int pos

subrs

byte[] subrs

stack

float[] stack

stackptr

int stackptr

stemhints

int stemhints

names

String[] names

glyphnames

int[] glyphnames

encoding

int[] encoding

fontname

String fontname

at

AffineTransform at

num

int num

fnum

float fnum

type

int type

CMD

static int CMD

NUM

static int NUM

FLT

static int FLT

charstringtype

int charstringtype

temps

float[] temps

charsetbase

int charsetbase

encodingbase

int encodingbase

charstringbase

int charstringbase

privatebase

int privatebase

privatesize

int privatesize

gsubrbase

int gsubrbase

lsubrbase

int lsubrbase

gsubrsoffset

int gsubrsoffset

lsubrsoffset

int lsubrsoffset

nglyphs

int nglyphs

Constructor Details

Type1CFont

public Type1CFont(String baseFont,
 PDFObject src,
 PDFFontDescriptor descriptor)
           throws IOException

create a new Type1CFont based on a font data stream and a descriptor

Parameters:

baseFont - the postscript name of this font

src - a stream containing the font

descriptor - the descriptor for this font

Throws:

IOException

Method Details

printData

private void printData()

a debug method for printing the data

readNext

private int readNext(boolean charstring)

read the next decoded value from the stream

Parameters:

charstring - ????

readFNum

public void readFNum()

read the next funky floating point number from the input stream. value gets put into the fnum field.

readInt

private int readInt(int len)

read an integer from the input stream

Parameters:

len - the number of bytes in the integer

Returns:

the integer

readByte

private int readByte()

read the next byte from the stream

Returns:

the byte

getIndexSize

public int getIndexSize(int loc)

get the size of the dictionary located within the stream at some offset.

Parameters:

loc - the index of the start of the dictionary

Returns:

the size of the dictionary, in bytes.

getTableLength

public int getTableLength(int loc)

return the number of entries in an Index table.

Parameters:

loc -

Returns:

getIndexEntry

Type1CFont.Range getIndexEntry(int index,
 int id)

Get the range of a particular index in a dictionary.

Parameters:

index - the start of the dictionary.

id - the index of the entry in the dictionary

Returns:

a range describing the offsets of the start and end of the entry from the start of the file, not the dictionary

readDict

private void readDict(Type1CFont.Range r)

read a dictionary that exists within some range, parsing the entries within the dictionary.

readCommand

private int readCommand(boolean charstring)

read a complete command. this may involve several numbers which go onto a stack before an actual command is read.

Parameters:

charstring - ????

Returns:

the command. Some numbers may also be on the stack.

readEncodingData

private void readEncodingData(int base)

parse information about the encoding of this file.

Parameters:

base - the start of the encoding data

readGlyphNames

private void readGlyphNames(int base)

read the names of the glyphs.

Parameters:

base - the start of the glyph name table

readNames

private void readNames(int base)

read a list of names

Parameters:

base - the start of the name table

parse

private void parse()
            throws IOException

parse the font data.

Parameters:

encdif - a dictionary describing the encoding.

Throws:

IOException

getNameIndex

private int getNameIndex(String name)

get the index of a particular name. The name table starts with the standard names in FontSupport.stdNames, and is appended by any names in the name table from this font's dictionary.

safe

private String safe(String src)

convert a string to one in which any non-printable bytes are replaced by "invalid input: '<'###>" where ## is the value of the byte.

readGlyph

private GeneralPath readGlyph(int base,
 int offset)

Read the data for a glyph from the glyph table, and transform it based on the current transform.

Parameters:

base - the start of the glyph table

offset - the index of this glyph in the glyph table

calcoffset

public int calcoffset(int base)

calculate an offset code for a dictionary. Uses the count of entries to determine what the offset should be.

Parameters:

base - the index of the start of the dictionary

getSID

public String getSID(int id)

get the name associated with an ID.

Parameters:

id - the index of the name

Returns:

the name from the FontSupport.stdNames table augmented by the local name table

buildAccentChar

private void buildAccentChar(float x,
 float y,
 char b,
 char a,
 GeneralPath gp)

build an accented character out of two pre-defined glyphs.

Parameters:

x - the x offset of the accent

y - the y offset of the accent

b - the index of the base glyph

a - the index of the accent glyph

gp - the GeneralPath into which the combined glyph will be written.

parseGlyph

void parseGlyph(Type1CFont.Range r,
 GeneralPath gp,
 FlPoint pt)

parse a glyph defined in a particular range

Parameters:

r - the range of the glyph definition

gp - a GeneralPath in which to store the glyph outline

pt - a FlPoint representing the end of the current path

getOutline

protected GeneralPath getOutline(String name,
 float width)

Get a glyph outline by name

Specified by:

getOutline in class OutlineFont

Parameters:

name - the name of the desired glyph

Returns:

the glyph outline, or null if unavailable

getOutline

protected GeneralPath getOutline(char src,
 float width)

Get a glyph outline by character code Note this method must always return an outline

Specified by:

getOutline in class OutlineFont

Parameters:

src - the character code of the desired glyph

Returns:

the glyph outline