org.extex.font.format.xtf.tables.cff
Class T2Number

java.lang.Object
  org.extex.font.format.xtf.tables.cff.T2CharString
      org.extex.font.format.xtf.tables.cff.T2Number

Direct Known Subclasses:

T2Double, T2DummyNumber, T2Integer, T2Number16, T2NumberFraction, T2SID

public abstract class T2Number
extends T2CharString

Number.

Operand Encoding

251 - 254 (b0 251)*256 b1 108

Size	b0 range	Value range	Value calculation
1	32 - 246	-107 - +107	b0 139
2	247 - 250	+108 - +1131	(b0 247)*256+b1+108
2	-1131 - -108
3	28	-32768 -+32767	b1<<8|b2
5	29	-(2^31) - +(2^31-1)	b1<<24|b2<<16|b3<<8|b4

A real number operand is provided in addition to integer operands. This operand begins with a byte value of 30 followed by a variable-length sequence of bytes. Each byte is composed of two 4-bit nibbles. The first nibble of a pair is stored in the most significant 4 bits of a byte and the second nibble of a pair is stored in the least significant 4 bits of a byte.

Nibble Definitions

Nibble	Represents
0 - 9	0 - 9
a	. (decimal point)
b	E
c	-E
d	reserved
e	- (minus)
f	end of number

Version:

$Revision: 6604 $

Author:

Michael Niedermair

Field Summary

Fields inherited from class org.extex.font.format.xtf.tables.cff.T2CharString

ESCAPE, ESCAPE_BYTE, T2CALLGSUBR, T2CALLSUBR, T2CNTRMASK, T2ENDCHAR, T2FLEX, T2FLEX1, T2HFLEX, T2HFLEX1, T2HHCURVETO, T2HINTMASK, T2HLINETO, T2HMOVETO, T2HSTEM, T2HSTEMHM, T2HVCURVETO, T2RCURVELINE, T2RETURN, T2RLINECURVE, T2RLINETO, T2RMOVETO, T2RRCURVETO, T2VHCURVETO, T2VLINETO, T2VMOVETO, T2VSTEM, T2VSTEMHM, T2VVCURVETO, TYPE_CALLGSUBR, TYPE_CALLSUBR, TYPE_CNTRMASK, TYPE_ENDCHAR, TYPE_FLEX, TYPE_FLEX1, TYPE_HFLEX, TYPE_HFLEX1, TYPE_HHCURVETO, TYPE_HINTMASK, TYPE_HLINETO, TYPE_HMOVETO, TYPE_HSTEM, TYPE_HSTEMHM, TYPE_HVCURVETO, TYPE_RCURVELINE, TYPE_RETURN, TYPE_RLINECURVE, TYPE_RLINETO, TYPE_RMOVETO, TYPE_RRCURVETO, TYPE_VHCURVETO, TYPE_VLINETO, TYPE_VMOVETO, TYPE_VSTEM, TYPE_VSTEMHM, TYPE_VVCURVETO

Constructor Summary

protected

T2Number() Create a new object.

Method Summary

abstract double	getDouble() Returns the value as double.
abstract int	getInteger() Returns the value as int.
void	init(RandomAccessR rar, OtfTableCFF cff, int baseoffset, CffFont cffFont) Initialize.
static T2Number	newInstance(RandomAccessR rar) Create a new instance.
static T2Number	newInstance(RandomAccessR rar, int b0) Create a new instance.

Methods inherited from class org.extex.font.format.xtf.tables.cff.T2CharString

getBytes, getInitPrio, isArray, isBoolean, isDouble, isEscape, isInteger, isOperator, isTopDICTOperator, readNumber, readNumber, readSID, readTopDICTOperator

Methods inherited from class java.lang.Object

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

Constructor Detail

T2Number

protected T2Number()

Create a new object.

Method Detail

newInstance

public static T2Number newInstance(RandomAccessR rar)
                            throws java.io.IOException

Create a new instance.

Parameters:

rar - the input

Returns:

Returns the new T2Number object.

Throws:

java.io.IOException - if an IO-error occurs.

newInstance

public static T2Number newInstance(RandomAccessR rar,
                                   int b0)
                            throws java.io.IOException

Create a new instance.

Parameters:

rar - the input

b0 - the first byte

Returns:

Returns the new T2Number object.

Throws:

java.io.IOException - if an IO-error occurs.

getDouble

public abstract double getDouble()

Returns the value as double.

Returns:

Returns the value as double.

getInteger

public abstract int getInteger()

Returns the value as int.

Returns:

Returns the value as int.

init

public void init(RandomAccessR rar,
                 OtfTableCFF cff,
                 int baseoffset,
                 CffFont cffFont)
          throws java.io.IOException

Initialize.

Specified by:

init in class T2CharString

Parameters:

rar - The input

cff - The cff table

baseoffset - The base offset from cff.

cffFont - The cff font.

Throws:

java.io.IOException - if an IO-error occurred.

See Also:

T2CharString.init(org.extex.util.file.random.RandomAccessR, org.extex.font.format.xtf.tables.OtfTableCFF, int, org.extex.font.format.xtf.tables.cff.CffFont)