Added in API level 1

NumericShaper

class NumericShaper : Serializable

kotlin.Any
↳	java.awt.font.NumericShaper

The class is used to convert Latin-1 (European) digits to other Unicode decimal digits. Users of this class will primarily be people who wish to present data using national digit shapes, but find it more convenient to represent the data internally using Latin-1 (European) digits. This does not interpret the deprecated numeric shape selector character (U+206E).

Instances of NumericShaper are typically applied as attributes to text with the NUMERIC_SHAPING attribute of the TextAttribute class. For example, this code snippet causes a TextLayout to shape European digits to Arabic in an Arabic context:

Map map = new HashMap();
  map.put(TextAttribute.NUMERIC_SHAPING,
      NumericShaper.getContextualShaper(NumericShaper.ARABIC));
  FontRenderContext frc = ...;
  TextLayout layout = new TextLayout(text, map, frc);
  layout.draw(g2d, x, y);

It is also possible to perform numeric shaping explicitly using instances of NumericShaper, as this code snippet demonstrates:

char[] text = ...;
  // shape all EUROPEAN digits (except zero) to ARABIC digits
  NumericShaper shaper = NumericShaper.getShaper(NumericShaper.ARABIC);
  shaper.shape(text, start, count);
 
  // shape European digits to ARABIC digits if preceding text is Arabic, or
  // shape European digits to TAMIL digits if preceding text is Tamil, or
  // leave European digits alone if there is no preceding text, or
  // preceding text is neither Arabic nor Tamil
  NumericShaper shaper =
      NumericShaper.getContextualShaper(NumericShaper.ARABIC |
                                          NumericShaper.TAMIL,
                                        NumericShaper.EUROPEAN);
  shaper.shape(text, start, count);

Bit mask- and enum-based Unicode ranges

This class supports two different programming interfaces to represent Unicode ranges for script-specific digits: bit mask-based ones, such as NumericShaper.ARABIC, and enum-based ones, such as NumericShaper.Range#ARABIC. Multiple ranges can be specified by ORing bit mask-based constants, such as:

NumericShaper.ARABIC | NumericShaper.TAMIL

or creating a Set with the NumericShaper.Range constants, such as:

EnumSet.of(NumericShaper.Scirpt.ARABIC, NumericShaper.Range.TAMIL)

The enum-based ranges are a super set of the bit mask-based ones.

If the two interfaces are mixed (including serialization), Unicode range values are mapped to their counterparts where such mapping is possible, such as NumericShaper.Range.ARABIC from/to NumericShaper.ARABIC. If any unmappable range values are specified, such as NumericShaper.Range.BALINESE, those ranges are ignored.

Decimal Digits Precedence

A Unicode range may have more than one set of decimal digits. If multiple decimal digits sets are specified for the same Unicode range, one of the sets will take precedence as follows.

Unicode Range	`NumericShaper` Constants	Precedence
Arabic	`NumericShaper.ARABIC` `NumericShaper.EASTERN_ARABIC`	`NumericShaper.EASTERN_ARABIC`
Arabic	`NumericShaper.Range#ARABIC` `NumericShaper.Range#EASTERN_ARABIC`	`NumericShaper.Range#EASTERN_ARABIC`
Tai Tham	`NumericShaper.Range#TAI_THAM_HORA` `NumericShaper.Range#TAI_THAM_THAM`	`NumericShaper.Range#TAI_THAM_THAM`

Summary

Nested classes
	`Range` A `NumericShaper.Range` represents a Unicode range of a script having its own decimal digits.

Constants
static Int	`ALL_RANGES` Identifies all ranges, for full contextual shaping.
static Int	`ARABIC` Identifies the ARABIC range and decimal base.
static Int	`BENGALI` Identifies the BENGALI range and decimal base.
static Int	`DEVANAGARI` Identifies the DEVANAGARI range and decimal base.
static Int	`EASTERN_ARABIC` Identifies the ARABIC range and ARABIC_EXTENDED decimal base.
static Int	`ETHIOPIC` Identifies the ETHIOPIC range and decimal base.
static Int	`EUROPEAN` Identifies the Latin-1 (European) and extended range, and Latin-1 (European) decimal base.
static Int	`GUJARATI` Identifies the GUJARATI range and decimal base.
static Int	`GURMUKHI` Identifies the GURMUKHI range and decimal base.
static Int	`KANNADA` Identifies the KANNADA range and decimal base.
static Int	`KHMER` Identifies the KHMER range and decimal base.
static Int	`LAO` Identifies the LAO range and decimal base.
static Int	`MALAYALAM` Identifies the MALAYALAM range and decimal base.
static Int	`MONGOLIAN` Identifies the MONGOLIAN range and decimal base.
static Int	`MYANMAR` Identifies the MYANMAR range and decimal base.
static Int	`ORIYA` Identifies the ORIYA range and decimal base.
static Int	`TAMIL` Identifies the TAMIL range and decimal base.
static Int	`TELUGU` Identifies the TELUGU range and decimal base.
static Int	`THAI` Identifies the THAI range and decimal base.
static Int	`TIBETAN` Identifies the TIBETAN range and decimal base.

Public methods
Boolean	`equals(other: Any?)` Returns `true` if the specified object is an instance of `NumericShaper` and shapes identically to this one, regardless of the range representations, the bit mask or the enum.
static NumericShaper!	`getContextualShaper(ranges: Int)` Returns a contextual shaper for the provided unicode range(s).
static NumericShaper!	`getContextualShaper(ranges: MutableSet<NumericShaper.Range!>!)` Returns a contextual shaper for the provided Unicode range(s).
static NumericShaper!	`getContextualShaper(ranges: Int, defaultContext: Int)` Returns a contextual shaper for the provided unicode range(s).
static NumericShaper!	`getContextualShaper(ranges: MutableSet<NumericShaper.Range!>!, defaultContext: NumericShaper.Range!)` Returns a contextual shaper for the provided Unicode range(s).
MutableSet<NumericShaper.Range!>!	`getRangeSet()` Returns a `Set` representing all the Unicode ranges in this `NumericShaper` that will be shaped.
Int	`getRanges()` Returns an `int` that ORs together the values for all the ranges that will be shaped.
static NumericShaper!	`getShaper(singleRange: Int)` Returns a shaper for the provided unicode range.
static NumericShaper!	`getShaper(singleRange: NumericShaper.Range!)` Returns a shaper for the provided Unicode range.
Int	`hashCode()` Returns a hash code for this shaper.
Boolean	`isContextual()` Returns a `boolean` indicating whether or not this shaper shapes contextually.
Unit	`shape(text: CharArray!, start: Int, count: Int)` Converts the digits in the text that occur between start and start + count.
Unit	`shape(text: CharArray!, start: Int, count: Int, context: Int)` Converts the digits in the text that occur between start and start + count, using the provided context.
Unit	`shape(text: CharArray!, start: Int, count: Int, context: NumericShaper.Range!)` Converts the digits in the text that occur between `start` and `start + count`, using the provided `context`.
String	`toString()` Returns a `String` that describes this shaper.

Constants

ALL_RANGES

Added in API level 1

static val ALL_RANGES: Int

Identifies all ranges, for full contextual shaping.

This constant specifies all of the bit mask-based ranges. Use EmunSet.allOf(NumericShaper.Range.class) to specify all of the enum-based ranges.

Value: 524287

ARABIC

Added in API level 1

static val ARABIC: Int

Identifies the ARABIC range and decimal base.

Value: 2

BENGALI

Added in API level 1

static val BENGALI: Int

Identifies the BENGALI range and decimal base.

Value: 16

DEVANAGARI

Added in API level 1

static val DEVANAGARI: Int

Identifies the DEVANAGARI range and decimal base.

Value: 8

EASTERN_ARABIC

Added in API level 1

static val EASTERN_ARABIC: Int

Identifies the ARABIC range and ARABIC_EXTENDED decimal base.

Value: 4

ETHIOPIC

Added in API level 1

static val ETHIOPIC: Int

Identifies the ETHIOPIC range and decimal base.

Value: 65536

EUROPEAN

Added in API level 1

static val EUROPEAN: Int

Identifies the Latin-1 (European) and extended range, and Latin-1 (European) decimal base.

Value: 1

GUJARATI

Added in API level 1

static val GUJARATI: Int

Identifies the GUJARATI range and decimal base.

Value: 64

GURMUKHI

Added in API level 1

static val GURMUKHI: Int

Identifies the GURMUKHI range and decimal base.

Value: 32

KANNADA

Added in API level 1

static val KANNADA: Int

Identifies the KANNADA range and decimal base.

Value: 1024

KHMER

Added in API level 1

static val KHMER: Int

Identifies the KHMER range and decimal base.

Value: 131072

LAO

Added in API level 1

static val LAO: Int

Identifies the LAO range and decimal base.

Value: 8192

MALAYALAM

Added in API level 1

static val MALAYALAM: Int

Identifies the MALAYALAM range and decimal base.

Value: 2048

MONGOLIAN

Added in API level 1

static val MONGOLIAN: Int

Identifies the MONGOLIAN range and decimal base.

Value: 262144

MYANMAR

Added in API level 1

static val MYANMAR: Int

Identifies the MYANMAR range and decimal base.

Value: 32768

ORIYA

Added in API level 1

static val ORIYA: Int

Identifies the ORIYA range and decimal base.

Value: 128

TAMIL

Added in API level 1

static val TAMIL: Int

Identifies the TAMIL range and decimal base.

Value: 256

TELUGU

Added in API level 1

static val TELUGU: Int

Identifies the TELUGU range and decimal base.

Value: 512

THAI

Added in API level 1

static val THAI: Int

Identifies the THAI range and decimal base.

Value: 4096

TIBETAN

Added in API level 1

static val TIBETAN: Int

Identifies the TIBETAN range and decimal base.

Value: 16384

Public methods

equals

Added in API level 1

fun equals(other: Any?): Boolean

Returns true if the specified object is an instance of NumericShaper and shapes identically to this one, regardless of the range representations, the bit mask or the enum. For example, the following code produces "true".

NumericShaper ns1 = NumericShaper.getShaper(NumericShaper.ARABIC);
  NumericShaper ns2 = NumericShaper.getShaper(NumericShaper.Range.ARABIC);
  System.out.println(ns1.equals(ns2));

Parameters
`obj`	the reference object with which to compare.
`o`	the specified object to compare to this `NumericShaper`

Return
`Boolean`	`true` if `o` is an instance of `NumericShaper` and shapes in the same way; `false` otherwise.

See Also

java.lang.Object#equals(java.lang.Object)

getContextualShaper

Added in API level 1

static fun getContextualShaper(ranges: Int): NumericShaper!

Returns a contextual shaper for the provided unicode range(s). Latin-1 (EUROPEAN) digits are converted to the decimal digits corresponding to the range of the preceding text, if the range is one of the provided ranges. Multiple ranges are represented by or-ing the values together, such as, NumericShaper.ARABIC | NumericShaper.THAI. The shaper assumes EUROPEAN as the starting context, that is, if EUROPEAN digits are encountered before any strong directional text in the string, the context is presumed to be EUROPEAN, and so the digits will not shape.

Parameters
`ranges`	Int: the specified Unicode ranges

Return
`NumericShaper!`	a shaper for the specified ranges

getContextualShaper

Added in API level 24

static fun getContextualShaper(ranges: MutableSet<NumericShaper.Range!>!): NumericShaper!

Returns a contextual shaper for the provided Unicode range(s). The Latin-1 (EUROPEAN) digits are converted to the decimal digits corresponding to the range of the preceding text, if the range is one of the provided ranges.

The shaper assumes EUROPEAN as the starting context, that is, if EUROPEAN digits are encountered before any strong directional text in the string, the context is presumed to be EUROPEAN, and so the digits will not shape.

Parameters
`ranges`	MutableSet<NumericShaper.Range!>!: the specified Unicode ranges

Return
`NumericShaper!`	a contextual shaper for the specified ranges

Exceptions
`java.lang.NullPointerException`	if `ranges` is `null`.

getContextualShaper

Added in API level 1

static fun getContextualShaper(
    ranges: Int, 
    defaultContext: Int
): NumericShaper!

Returns a contextual shaper for the provided unicode range(s). Latin-1 (EUROPEAN) digits will be converted to the decimal digits corresponding to the range of the preceding text, if the range is one of the provided ranges. Multiple ranges are represented by or-ing the values together, for example, NumericShaper.ARABIC | NumericShaper.THAI. The shaper uses defaultContext as the starting context.

Parameters
`ranges`	Int: the specified Unicode ranges
`defaultContext`	Int: the starting context, such as `NumericShaper.EUROPEAN`

Return
`NumericShaper!`	a shaper for the specified Unicode ranges.

Exceptions
`java.lang.IllegalArgumentException`	if the specified `defaultContext` is not a single valid range.

getContextualShaper

Added in API level 24

static fun getContextualShaper(
    ranges: MutableSet<NumericShaper.Range!>!, 
    defaultContext: NumericShaper.Range!
): NumericShaper!

Returns a contextual shaper for the provided Unicode range(s). The Latin-1 (EUROPEAN) digits will be converted to the decimal digits corresponding to the range of the preceding text, if the range is one of the provided ranges. The shaper uses defaultContext as the starting context.

Parameters
`ranges`	MutableSet<NumericShaper.Range!>!: the specified Unicode ranges
`defaultContext`	NumericShaper.Range!: the starting context, such as `NumericShaper.Range.EUROPEAN`

Return
`NumericShaper!`	a contextual shaper for the specified Unicode ranges.

Exceptions
`java.lang.NullPointerException`	if `ranges` or `defaultContext` is `null`

getRangeSet

Added in API level 24

fun getRangeSet(): MutableSet<NumericShaper.Range!>!

Returns a Set representing all the Unicode ranges in this NumericShaper that will be shaped.

Return
`MutableSet<NumericShaper.Range!>!`	all the Unicode ranges to be shaped.

getRanges

Added in API level 1

fun getRanges(): Int

Returns an int that ORs together the values for all the ranges that will be shaped.

For example, to check if a shaper shapes to Arabic, you would use the following:

if ((shaper.getRanges() & shaper.ARABIC) != 0) { ...

Note that this method supports only the bit mask-based ranges. Call getRangeSet() for the enum-based ranges.

Return
`Int`	the values for all the ranges to be shaped.

getShaper

Added in API level 1

static fun getShaper(singleRange: Int): NumericShaper!

Returns a shaper for the provided unicode range. All Latin-1 (EUROPEAN) digits are converted to the corresponding decimal unicode digits.

Parameters
`singleRange`	Int: the specified Unicode range

Return
`NumericShaper!`	a non-contextual numeric shaper

Exceptions
`java.lang.IllegalArgumentException`	if the range is not a single range

getShaper

Added in API level 24

static fun getShaper(singleRange: NumericShaper.Range!): NumericShaper!

Returns a shaper for the provided Unicode range. All Latin-1 (EUROPEAN) digits are converted to the corresponding decimal digits of the specified Unicode range.

Parameters
`singleRange`	NumericShaper.Range!: the Unicode range given by a `NumericShaper.Range` constant.

Return
`NumericShaper!`	a non-contextual `NumericShaper`.

Exceptions
`java.lang.NullPointerException`	if `singleRange` is `null`

hashCode

Added in API level 1

fun hashCode(): Int

Returns a hash code for this shaper.

Return
`Int`	this shaper's hash code.

See Also

java.lang.Object#hashCode

isContextual

Added in API level 1

fun isContextual(): Boolean

Returns a boolean indicating whether or not this shaper shapes contextually.

Return
`Boolean`	`true` if this shaper is contextual; `false` otherwise.

shape

Added in API level 1

fun shape(
    text: CharArray!, 
    start: Int, 
    count: Int
): Unit

Converts the digits in the text that occur between start and start + count.

Parameters
`text`	CharArray!: an array of characters to convert
`start`	Int: the index into `text` to start converting
`count`	Int: the number of characters in `text` to convert

Exceptions
`java.lang.IndexOutOfBoundsException`	if start or start + count is out of bounds
`java.lang.NullPointerException`	if text is null

shape

Added in API level 1

fun shape(
    text: CharArray!, 
    start: Int, 
    count: Int, 
    context: Int
): Unit

Converts the digits in the text that occur between start and start + count, using the provided context. Context is ignored if the shaper is not a contextual shaper.

Parameters
`text`	CharArray!: an array of characters
`start`	Int: the index into `text` to start converting
`count`	Int: the number of characters in `text` to convert
`context`	Int: the context to which to convert the characters, such as `NumericShaper.EUROPEAN`

Exceptions
`java.lang.IndexOutOfBoundsException`	if start or start + count is out of bounds
`java.lang.NullPointerException`	if text is null
`java.lang.IllegalArgumentException`	if this is a contextual shaper and the specified `context` is not a single valid range.

shape

Added in API level 24

fun shape(
    text: CharArray!, 
    start: Int, 
    count: Int, 
    context: NumericShaper.Range!
): Unit

Converts the digits in the text that occur between start and start + count, using the provided context. Context is ignored if the shaper is not a contextual shaper.

Parameters
`text`	CharArray!: a `char` array
`start`	Int: the index into `text` to start converting
`count`	Int: the number of `char`s in `text` to convert
`context`	NumericShaper.Range!: the context to which to convert the characters, such as `NumericShaper.Range.EUROPEAN`

Exceptions
`java.lang.IndexOutOfBoundsException`	if `start` or `start + count` is out of bounds
`java.lang.NullPointerException`	if `text` or `context` is null

toString

Added in API level 1

fun toString(): String

Returns a String that describes this shaper. This method is used for debugging purposes only.

Return
`String`	a `String` describing this shaper.