java.lang.Object | |
↳ | java.awt.font.NumericShaper |
The NumericShaper
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);
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);
Constants | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
int | ALL_RANGES | Identifies all ranges, for full contextual shaping. | |||||||||
int | ARABIC | Identifies the ARABIC range and decimal base. | |||||||||
int | BENGALI | Identifies the BENGALI range and decimal base. | |||||||||
int | DEVANAGARI | Identifies the DEVANAGARI range and decimal base. | |||||||||
int | EASTERN_ARABIC | Identifies the ARABIC range and ARABIC_EXTENDED decimal base. | |||||||||
int | ETHIOPIC | Identifies the ETHIOPIC range and decimal base. | |||||||||
int | EUROPEAN | Identifies the Latin-1 (European) and extended range, and Latin-1 (European) decimal base. | |||||||||
int | GUJARATI | Identifies the GUJARATI range and decimal base. | |||||||||
int | GURMUKHI | Identifies the GURMUKHI range and decimal base. | |||||||||
int | KANNADA | Identifies the KANNADA range and decimal base. | |||||||||
int | KHMER | Identifies the KHMER range and decimal base. | |||||||||
int | LAO | Identifies the LAO range and decimal base. | |||||||||
int | MALAYALAM | Identifies the MALAYALAM range and decimal base. | |||||||||
int | MONGOLIAN | Identifies the MONGOLIAN range and decimal base. | |||||||||
int | MYANMAR | Identifies the MYANMAR range and decimal base. | |||||||||
int | ORIYA | Identifies the ORIYA range and decimal base. | |||||||||
int | TAMIL | Identifies the TAMIL range and decimal base. | |||||||||
int | TELUGU | Identifies the TELUGU range and decimal base. | |||||||||
int | THAI | Identifies the THAI range and decimal base. | |||||||||
int | TIBETAN | Identifies the TIBETAN range and decimal base. |
Public Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Returns true if the specified object is an instance of
NumericShaper and shapes identically to this one. | |||||||||||
Returns a contextual shaper for the provided unicode range(s).
| |||||||||||
Returns a contextual shaper for the provided unicode range(s).
| |||||||||||
Returns an
int that ORs together the values for
all the ranges that will be shaped. | |||||||||||
Returns a shaper for the provided unicode range.
| |||||||||||
Returns a hash code for this shaper.
| |||||||||||
Returns a
boolean indicating whether or not
this shaper shapes contextually. | |||||||||||
Converts the digits in the text that occur between start and
start + count, using the provided context.
| |||||||||||
Converts the digits in the text that occur between start and
start + count.
| |||||||||||
Returns a
String that describes this shaper. |
[Expand]
Inherited Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
From class
java.lang.Object
|
Identifies all ranges, for full contextual shaping.
Identifies the ARABIC range and decimal base.
Identifies the BENGALI range and decimal base.
Identifies the DEVANAGARI range and decimal base.
Identifies the ARABIC range and ARABIC_EXTENDED decimal base.
Identifies the ETHIOPIC range and decimal base.
Identifies the Latin-1 (European) and extended range, and Latin-1 (European) decimal base.
Identifies the GUJARATI range and decimal base.
Identifies the GURMUKHI range and decimal base.
Identifies the KANNADA range and decimal base.
Identifies the KHMER range and decimal base.
Identifies the LAO range and decimal base.
Identifies the MALAYALAM range and decimal base.
Identifies the MONGOLIAN range and decimal base.
Identifies the MYANMAR range and decimal base.
Identifies the ORIYA range and decimal base.
Identifies the TAMIL range and decimal base. Tamil does not have a decimal digit 0 so Latin-1 (European) 0 is used.
Identifies the TELUGU range and decimal base.
Identifies the THAI range and decimal base.
Identifies the TIBETAN range and decimal base.
Returns true if the specified object is an instance of
NumericShaper
and shapes identically to this one.
o | the specified object to compare to this
NumericShaper |
---|
true
if o
is an instance
of NumericShaper
and shapes in the same way;
false
otherwise.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.
ranges | the specified Unicode ranges |
---|
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.
ranges | the specified Unicode ranges |
---|---|
defaultContext | the starting context, such as
NumericShaper.EUROPEAN |
IllegalArgumentException | if the specified
defaultContext is not a single valid range.
|
---|
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) { ...
Returns a shaper for the provided unicode range. All Latin-1 (EUROPEAN) digits are converted to the corresponding decimal unicode digits.
singleRange | the specified Unicode range |
---|
IllegalArgumentException | if the range is not a single range |
---|
Returns a boolean
indicating whether or not
this shaper shapes contextually.
true
if this shaper is contextual;
false
otherwise.
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.
text | an array of characters |
---|---|
start | the index into text to start
converting |
count | the number of characters in text
to convert |
context | the context to which to convert the
characters, such as NumericShaper.EUROPEAN |
IndexOutOfBoundsException | if start or start + count is out of bounds |
---|---|
NullPointerException | if text is null |
IllegalArgumentException | if this is a contextual shaper
and the specified context is not a single valid
range.
|
Converts the digits in the text that occur between start and start + count.
text | an array of characters to convert |
---|---|
start | the index into text to start
converting |
count | the number of characters in text
to convert |
IndexOutOfBoundsException | if start or start + count is out of bounds |
---|---|
NullPointerException | if text is null |
Returns a String
that describes this shaper. This method
is used for debugging purposes only.
String
describing this shaper.