TextAttribute (Java 2 Platform SE v1.4.1)

java.awt.font
Class TextAttribute
java.lang.Object
  |
  +--java.text.AttributedCharacterIterator.Attribute
        |
        +--java.awt.font.TextAttribute
All Implemented Interfaces:
Serializable

public final class TextAttribute
extends AttributedCharacterIterator.Attribute

The TextAttribute class defines attribute keys and attribute values used for text rendering.
TextAttribute instances are used as attribute keys to identify attributes in AttributedCharacterIterator, Font, and other classes handling text attributes. Other constants defined in this class are used as attribute values.
For each text attribute, the documentation describes:

the type of their values,
the valid values if there are limitations
relevant constants
the default effect if the attribute is absent (or has a null value).
a description of the effect.
the fallback behavior if the exact attribute requested is not available.

Types of Values

The values of attributes must always be immutable.
Where a list of limitations is given, any value outside of that set is reserved for future use, and ignored at present.
If the value is null or not of the proper type then it has the default effect. The effect of a particular value can be interpolated, especially in the case of multiple master fonts. This interpolation is done based on the nearest defined constants above and below the request:

interpolation = (request - below)/(above - below);

Interpolation

Fonts should interpolate values in certain circumstances. For example, when the WEIGHT value is 2.13. If the nearest surrounding values in the font are WEIGHT_BOLD = 2.0 and WEIGHT_HEAVY = 2.25 then font would then interpret the WEIGHT request as being 52% of the way between what it considers BOLD and what it considers HEAVY. If the nearest surrounding values are WEIGHT_SEMIBOLD = 1.25 and WEIGHT_ULTRABOLD = 2.75 then the WEIGHT request is interpreted as being 58.67% of the way between SEMIBOLD and ULTRABOLD.
Where a font does not have enough capability to handle a given request, such as superscript, then it should simulate it to the best of its ability. To determine if simulation is being performed, the client should query the font to see what actual attributes were used.

See Also:
AttributedCharacterIterator, Font, Serialized Form

Field Summary
static TextAttribute BACKGROUND
    Attribute key for the background Paint adornment.
static TextAttribute BIDI_EMBEDDING
    Attribute key for the embedding level for nested bidirectional runs.
static TextAttribute CHAR_REPLACEMENT
    Attribute key for a user_defined glyph to display in the text in lieu of a character.
static TextAttribute FAMILY
    Attribute key for the unlocalized font family name.
static TextAttribute FONT
    Attribute key for the font to use to render text.
static TextAttribute FOREGROUND
    Attribute key for the foreground paint adornment.
static TextAttribute INPUT_METHOD_HIGHLIGHT
    Attribute key for input method highlight styles.
static TextAttribute INPUT_METHOD_UNDERLINE
    Attribute key for input method underline adornments.
static TextAttribute JUSTIFICATION
    Attribute key for the justification of a paragraph.
static Float JUSTIFICATION_FULL
    Justify the line to the full requested width.
static Float JUSTIFICATION_NONE
    Do not allow the line to be justified.
static TextAttribute NUMERIC_SHAPING
    Attribute key for converting ASCII decimal digits to other decimal ranges.
static TextAttribute POSTURE
    Attribute key for the posture of a font.
static Float POSTURE_OBLIQUE
    The standard italic posture.
static Float POSTURE_REGULAR
    The standard posture, upright.
static TextAttribute RUN_DIRECTION
    Attribute key for the run direction of the line.
static Boolean RUN_DIRECTION_LTR
    Left-to-right run direction.
static Boolean RUN_DIRECTION_RTL
    Right-to-left run direction.
static TextAttribute SIZE
    Attribute key for the font size.
static TextAttribute STRIKETHROUGH
    Attribute key for the strikethrough adornment.
static Boolean STRIKETHROUGH_ON
    A single strikethrough.
static TextAttribute SUPERSCRIPT
    Attribute key for super and subscripting.
static Integer SUPERSCRIPT_SUB
    Standard subscript.
static Integer SUPERSCRIPT_SUPER
    Standard superscript.
static TextAttribute SWAP_COLORS
    Attribute key for swapping foreground and background Paints (or Colors).
static Boolean SWAP_COLORS_ON
    Swap foreground and background.
static TextAttribute TRANSFORM
    Attribute key for the transform of a font.
static TextAttribute UNDERLINE
    Attribute key for underline adornments.
static Integer UNDERLINE_LOW_DASHED
    Single pixel dashed low underline.
static Integer UNDERLINE_LOW_DOTTED
    Single pixel dotted low underline.
static Integer UNDERLINE_LOW_GRAY
    Double pixel gray low underline.
static Integer UNDERLINE_LOW_ONE_PIXEL
    Single pixel solid low underline.
static Integer UNDERLINE_LOW_TWO_PIXEL
    Double pixel solid low underline.
static Integer UNDERLINE_ON
    Standard underline at the roman baseline for roman text, and below the decenders for other text.
static TextAttribute WEIGHT
    Attribute key for the weight of a font.
static Float WEIGHT_BOLD
    The standard bold weight.
static Float WEIGHT_DEMIBOLD
    A moderately lighter weight than BOLD.
static Float WEIGHT_DEMILIGHT
    An intermediate weight between LIGHT and STANDARD.
static Float WEIGHT_EXTRA_LIGHT
    The lightest predefined weight.
static Float WEIGHT_EXTRABOLD
    An extra heavy weight.
static Float WEIGHT_HEAVY
    A moderately heavier weight than BOLD.
static Float WEIGHT_LIGHT
    The standard light weight.
static Float WEIGHT_MEDIUM
    An intermediate weight between the REGULAR and BOLD weights.
static Float WEIGHT_REGULAR
    The standard weight.
static Float WEIGHT_SEMIBOLD
    A moderately heavier weight than REGULAR.
static Float WEIGHT_ULTRABOLD
    The heaviest predefined weight.
static TextAttribute WIDTH
    Attribute key for the width of a font.
static Float WIDTH_CONDENSED
    The most condensed predefined width.
static Float WIDTH_EXTENDED
    The most extended predefined width.
static Float WIDTH_REGULAR
    The standard width.
static Float WIDTH_SEMI_CONDENSED
    A moderately condensed width.
static Float WIDTH_SEMI_EXTENDED
    A moderately extended width.

Fields inherited from class java.text.AttributedCharacterIterator.Attribute
INPUT_METHOD_SEGMENT, LANGUAGE, READING

Constructor Summary
protected TextAttribute(String name)
    Constructs a TextAttribute with the specified name.

Method Summary
protected Object readResolve()
    Resolves instances being deserialized to the predefined constants.

Methods inherited from class java.text.AttributedCharacterIterator.Attribute
equals, getName, hashCode, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

FAMILY
public static final TextAttribute FAMILY
Attribute key for the unlocalized font family name.

Key
FAMILY

Value
String

Constants
"Serif", "SansSerif"

Default
Host default;

Description
The name of the font family. If the family name is not found, the default font is used. The name should not be the full font name or specify other attributes (such as the name "Helvetica Bold"). Such names might result in the default font if the name does not match a known family name.

WEIGHT
public static final TextAttribute WEIGHT
Attribute key for the weight of a font.

Key
WEIGHT

Value
Float

Constants
WEIGHT_EXTRA_LIGHT = 0.5,
WEIGHT_LIGHT = 0.75,
WEIGHT_DEMILIGHT = 0.875,
WEIGHT_REGULAR = 1.0,
WEIGHT_SEMIBOLD = 1.25,
WEIGHT_MEDIUM = 1.5,
WEIGHT_DEMIBOLD = 1.75,
WEIGHT_BOLD = 2.0,
WEIGHT_HEAVY = 2.25,
WEIGHT_EXTRABOLD = 2.5,
WEIGHT_ULTRABOLD = 2.75

Default
WEIGHT_REGULAR

Description
The value is roughly the ratio of the stem width to that of the regular weight. If the font has a different value for specific constants, then the value is interpolated as described in the class description.

Fallback
Currently none. However, in the future, shape manipulations might be
available to simulate weight variations for fonts that don't have them.

WEIGHT_EXTRA_LIGHT
public static final Float WEIGHT_EXTRA_LIGHT
The lightest predefined weight.

See Also:
WEIGHT

WEIGHT_LIGHT
public static final Float WEIGHT_LIGHT
The standard light weight.

See Also:
WEIGHT

WEIGHT_DEMILIGHT
public static final Float WEIGHT_DEMILIGHT
An intermediate weight between LIGHT and STANDARD.

See Also:
WEIGHT

WEIGHT_REGULAR
public static final Float WEIGHT_REGULAR
The standard weight. This weight is used if WEIGHT is unspecified.

See Also:
WEIGHT

WEIGHT_SEMIBOLD
public static final Float WEIGHT_SEMIBOLD
A moderately heavier weight than REGULAR.

See Also:
WEIGHT

WEIGHT_MEDIUM
public static final Float WEIGHT_MEDIUM
An intermediate weight between the REGULAR and BOLD weights.

See Also:
WEIGHT

WEIGHT_DEMIBOLD
public static final Float WEIGHT_DEMIBOLD
A moderately lighter weight than BOLD.

See Also:
WEIGHT

WEIGHT_BOLD
public static final Float WEIGHT_BOLD
The standard bold weight.

See Also:
WEIGHT

WEIGHT_HEAVY
public static final Float WEIGHT_HEAVY
A moderately heavier weight than BOLD.

See Also:
WEIGHT

WEIGHT_EXTRABOLD
public static final Float WEIGHT_EXTRABOLD
An extra heavy weight.

See Also:
WEIGHT

WEIGHT_ULTRABOLD
public static final Float WEIGHT_ULTRABOLD
The heaviest predefined weight.

See Also:
WEIGHT

WIDTH
public static final TextAttribute WIDTH
Attribute key for the width of a font.

Key
WIDTH

Value
Float

Constants
WIDTH_CONDENSED = 0.75,
WIDTH_SEMI_CONDENSED = 0.875,
WIDTH_REGULAR = 1.0,
WIDTH_SEMI_EXTENDED = 1.25,
WIDTH_EXTENDED = 1.5

Default
WIDTH_REGULAR

Description
The value is roughly the ratio of the advance width to that of the regular width. If the font has a different value for specific constants, then the value is interpolated as described in the class description.

Fallback
If a Narrow font is available and matches, use that. Otherwise scale with a transform based on the value.

WIDTH_CONDENSED
public static final Float WIDTH_CONDENSED
The most condensed predefined width.

See Also:
WIDTH

WIDTH_SEMI_CONDENSED
public static final Float WIDTH_SEMI_CONDENSED
A moderately condensed width.

See Also:
WIDTH

WIDTH_REGULAR
public static final Float WIDTH_REGULAR
The standard width. This width is used if WIDTH is unspecified.

See Also:
WIDTH

WIDTH_SEMI_EXTENDED
public static final Float WIDTH_SEMI_EXTENDED
A moderately extended width.

See Also:
WIDTH

WIDTH_EXTENDED
public static final Float WIDTH_EXTENDED
The most extended predefined width.

See Also:
WIDTH

POSTURE
public static final TextAttribute POSTURE
Attribute key for the posture of a font.

Key
POSTURE

Value
Float

Constants
POSTURE_REGULAR = 0,
POSTURE_OBLIQUE = 0.20

Default
POSTURE_REGULAR

Description
The value is interpreted generally as a skew slope, positive leans to the right. If the font has a different value for specific constants, then the value is interpolated as described in the class description. With fonts that have italic faces, not only the skew of the character changes, but also the letter shapes might change.
Notes:
To set the value by angle, use:
value = new Float(Math.tan(Math.PI*degrees/180.0)
To determine the angle from the value, use:
angle = Math.atan(value.floatValue())*180/Math.PI

Fallback
If an Oblique font is available and matches, use that. Otherwise skew with a transform using the posture value interpreted as run/rise.

See Also:
Font.getItalicAngle()

POSTURE_REGULAR
public static final Float POSTURE_REGULAR
The standard posture, upright.

See Also:
POSTURE

POSTURE_OBLIQUE
public static final Float POSTURE_OBLIQUE
The standard italic posture.

See Also:
POSTURE

SIZE
public static final TextAttribute SIZE
Attribute key for the font size.

Key
SIZE

Value
Float

Default
from System Properties

Description
Represents point size. Note that the appearance and metrics of a 12pt font with a 2X transform might be different than that of a 24 point font with no transform.

Fallback
Scale to provided size.

TRANSFORM
public static final TextAttribute TRANSFORM
Attribute key for the transform of a font.

Key
TRANSFORM

Value
TransformAttribute

Default
Identity transform

Description

Used to transform glyphs rendered by this font. The primary intent is to support scaling, skewing, and translation. In general, large rotations do not produce very useful results. The transform modifies both the glyph and the advance. The translations in the transform are interpreted as a ratio of the point size. That is, with a point size of 12, a translation of 0.5 results in a movement of 6 points.
The advance point of the transformed glyph is the transform of the advance point projected onto the baseline. If the advance ends up to the left (top) of the glyph origin, the two points are swapped.

Example one: The point size is 20, the original advance is 10.0, and the transform is a 60 degree counterclockwise rotation plus an offset up and to the right of 0.1, -0.1. The translation results in an offset of <2.0, -2.0>. The original advance point is <10.0, 0.0>; after the rotation it is <6.0, -8.0>; when adding the offset this becomes <8.0,-10.0>, when projecting on the (horizontal) baseline this becomes the new advance point: <8.0, 0.0>. The advance width is the distance from the origin to the advance point: 8.0. The rotated glyph is rendered two points up and to the right of its origin and rotated. This does not affect the baseline for subsequent glyphs.

SUPERSCRIPT
public static final TextAttribute SUPERSCRIPT
Attribute key for super and subscripting.

Key
SUPERSCRIPT

Value
Integer

Constants
SUPERSCRIPT_NONE = 0,
SUPERSCRIPT_SUPER = 1,
SUPERSCRIPT_SUB = -1

Default
SUPERSCRIPT_NONE

Description
Requests that the font display the characters with glyphs at a particular superscript level: 0 = none, 1 = superscript, 2 = superscript of superscript,...-1 = subscript, -2 = subscript of subscript,... Requests that the font display text using default superscript (or subscript) glyphs and/or scaling.

Fallback
Use transform with translation of +/-1/2 and scale of 2/3, progressively for each level. That is, for the transform at level N (with N != 0):
offset = sign(N)*1/2*(2/3)^(abs(N)-1) scale = (2/3)^abs(N)

SUPERSCRIPT_SUPER
public static final Integer SUPERSCRIPT_SUPER
Standard superscript.

See Also:
SUPERSCRIPT

SUPERSCRIPT_SUB
public static final Integer SUPERSCRIPT_SUB
Standard subscript.

See Also:
SUPERSCRIPT

FONT
public static final TextAttribute FONT
Attribute key for the font to use to render text.

Key
FONT

Value
Font

Default
None, perform default resolution

Description
A way for users to override the resolution of font attributes into a Font, or force use of a particular Font instance. This also allows users to specify subclasses of Font in cases where a Font can be subclassed.

CHAR_REPLACEMENT
public static final TextAttribute CHAR_REPLACEMENT
Attribute key for a user_defined glyph to display in the text in lieu of a character.

Key
CHAR_REPLACEMENT

Value
GraphicAttribute

Description
Allows the user to specify an empty position plus metric information. This method is used to reserve space for a graphic or other embedded component. Required for correct BIDI position of 'inline' components within a line. An optional convenience method allows drawing for simple cases. Follows the Microsoft model: the character that this is applied to should be ?.

FOREGROUND
public static final TextAttribute FOREGROUND
Attribute key for the foreground paint adornment.

Key
FOREGROUND

Value
Paint

Default
Color.black

Description
Specify the foreground Paint (or Color) of the text.

BACKGROUND
public static final TextAttribute BACKGROUND
Attribute key for the background Paint adornment.

Key
BACKGROUND

Value
Paint

Default
null

Description
Specify the background Paint (or Color) of the text.

UNDERLINE
public static final TextAttribute UNDERLINE
Attribute key for underline adornments.

Key
UNDERLINE

Value
Integer

Constants
UNDERLINE_ON = 0

Default
none

Description
An embellishment added to the glyphs rendered by a font.

Fallback

UNDERLINE_ON
public static final Integer UNDERLINE_ON
Standard underline at the roman baseline for roman text, and below the decenders for other text.

See Also:
UNDERLINE

STRIKETHROUGH
public static final TextAttribute STRIKETHROUGH
Attribute key for the strikethrough adornment.

Key
STRIKETHROUGH

Value
Boolean

Constants
true = on, false = off

Default
off

Description
An embellishment added to the glyphs rendered by a font.

STRIKETHROUGH_ON
public static final Boolean STRIKETHROUGH_ON
A single strikethrough.

See Also:
STRIKETHROUGH

RUN_DIRECTION
public static final TextAttribute RUN_DIRECTION
Attribute key for the run direction of the line.

Key
RUN_DIRECTION

Value
Boolean

Constants
RUN_DIRECTION_LTR = true, RUN_DIRECTION_RTL = false

Default
Use the default Unicode base direction from the BIDI algorithm.

Description

Specifies which base run direction to use when positioning mixed directional runs within a paragraph. If this value is RUN_DIRECTION_DEFAULT, TextLayout uses the default Unicode base direction from the BIDI algorithm.

This attribute should have the same value over the whole paragraph.

RUN_DIRECTION_LTR
public static final Boolean RUN_DIRECTION_LTR
Left-to-right run direction.

See Also:
RUN_DIRECTION

RUN_DIRECTION_RTL
public static final Boolean RUN_DIRECTION_RTL
Right-to-left run direction.

See Also:
RUN_DIRECTION

BIDI_EMBEDDING
public static final TextAttribute BIDI_EMBEDDING
Attribute key for the embedding level for nested bidirectional runs.

Key
BIDI_EMBEDDING

Value
Integer

Limits
Positive values 1 through 61 are embedding levels, negative values
through -61 are override levels

Default
Use standard BIDI to compute levels from formatting characters in the text.

Description
Specifies the bidi embedding level of the character. When this attribute is present anywhere in a paragraph, then the Unicode characters RLO, LRO, RLE, LRE, PDF are disregarded in the BIDI analysis of that paragraph. See the Unicode Standard v. 2.0, section 3-11.

JUSTIFICATION
public static final TextAttribute JUSTIFICATION
Attribute key for the justification of a paragraph.

Key
JUSTIFICATION

Value
Float

Limits
0.0 through1.0

Default
1.0

Description

Specifies which fraction of the extra space to use when justification is requested. For example, if the line is 50 points wide and the margins are 70 points apart, a value of 0.5 means that the line is padded to reach a width of 60 points.

This attribute should have the same value over the whole paragraph.

JUSTIFICATION_FULL
public static final Float JUSTIFICATION_FULL
Justify the line to the full requested width.

See Also:
JUSTIFICATION

JUSTIFICATION_NONE
public static final Float JUSTIFICATION_NONE
Do not allow the line to be justified.

See Also:
JUSTIFICATION

INPUT_METHOD_HIGHLIGHT
public static final TextAttribute INPUT_METHOD_HIGHLIGHT
Attribute key for input method highlight styles.
Values are instances of InputMethodHighlight. These instances should be wrapped in Annotation instances if segments need to be highlighted separately.
Input method highlights are used while text is being composed using an input method. Text editing components should retain them even if they generally only deal with unstyled text, and make them available to the drawing routines.

See Also:
InputMethodHighlight

INPUT_METHOD_UNDERLINE
public static final TextAttribute INPUT_METHOD_UNDERLINE
Attribute key for input method underline adornments.

Key
INPUT_METHOD_UNDERLINE

Value
Integer

Constants
UNDERLINE_LOW_ONE_PIXEL, UNDERLINE_LOW_TWO_PIXEL, UNDERLINE_LOW_DOTTED, UNDERLINE_LOW_GRAY, UNDERLINE_LOW_DASHED

Default
no underline

Since:

1.3

UNDERLINE_LOW_ONE_PIXEL
public static final Integer UNDERLINE_LOW_ONE_PIXEL
Single pixel solid low underline.

Since:

1.3

See Also:
INPUT_METHOD_UNDERLINE

UNDERLINE_LOW_TWO_PIXEL
public static final Integer UNDERLINE_LOW_TWO_PIXEL
Double pixel solid low underline.

Since:

1.3

See Also:
INPUT_METHOD_UNDERLINE

UNDERLINE_LOW_DOTTED
public static final Integer UNDERLINE_LOW_DOTTED
Single pixel dotted low underline.

Since:

1.3

See Also:
INPUT_METHOD_UNDERLINE

UNDERLINE_LOW_GRAY
public static final Integer UNDERLINE_LOW_GRAY
Double pixel gray low underline.

Since:

1.3

See Also:
INPUT_METHOD_UNDERLINE

UNDERLINE_LOW_DASHED
public static final Integer UNDERLINE_LOW_DASHED
Single pixel dashed low underline.

Since:

1.3

See Also:
INPUT_METHOD_UNDERLINE

SWAP_COLORS
public static final TextAttribute SWAP_COLORS
Attribute key for swapping foreground and background Paints (or Colors).
Values are instances of Boolean. The default is not to swap the foreground and background. If the foreground and background attributes are both defined, this causes them to be swapped when rendering text. If either is defaulted, the exact effect is undefined--generally it will produce an 'inverted' appearance.

SWAP_COLORS_ON
public static final Boolean SWAP_COLORS_ON
Swap foreground and background.

NUMERIC_SHAPING
public static final TextAttribute NUMERIC_SHAPING
Attribute key for converting ASCII decimal digits to other decimal ranges.
Values are instances of NumericShaping. The default is not to perform numeric shaping.

Constructor Detail

TextAttribute
protected TextAttribute(String name)
Constructs a TextAttribute with the specified name.

Parameters:
name - the attribute name to assign to this TextAttribute

Method Detail

readResolve
protected Object readResolve()
                      throws InvalidObjectException
Resolves instances being deserialized to the predefined constants.

Overrides:
readResolve in class AttributedCharacterIterator.Attribute

InvalidObjectException

Field Summary
static TextAttribute	BACKGROUND Attribute key for the background Paint adornment.
static TextAttribute	BIDI_EMBEDDING Attribute key for the embedding level for nested bidirectional runs.
static TextAttribute	CHAR_REPLACEMENT Attribute key for a user_defined glyph to display in the text in lieu of a character.
static TextAttribute	FAMILY Attribute key for the unlocalized font family name.
static TextAttribute	FONT Attribute key for the font to use to render text.
static TextAttribute	FOREGROUND Attribute key for the foreground paint adornment.
static TextAttribute	INPUT_METHOD_HIGHLIGHT Attribute key for input method highlight styles.
static TextAttribute	INPUT_METHOD_UNDERLINE Attribute key for input method underline adornments.
static TextAttribute	JUSTIFICATION Attribute key for the justification of a paragraph.
static Float	JUSTIFICATION_FULL Justify the line to the full requested width.
static Float	JUSTIFICATION_NONE Do not allow the line to be justified.
static TextAttribute	NUMERIC_SHAPING Attribute key for converting ASCII decimal digits to other decimal ranges.
static TextAttribute	POSTURE Attribute key for the posture of a font.
static Float	POSTURE_OBLIQUE The standard italic posture.
static Float	POSTURE_REGULAR The standard posture, upright.
static TextAttribute	RUN_DIRECTION Attribute key for the run direction of the line.
static Boolean	RUN_DIRECTION_LTR Left-to-right run direction.
static Boolean	RUN_DIRECTION_RTL Right-to-left run direction.
static TextAttribute	SIZE Attribute key for the font size.
static TextAttribute	STRIKETHROUGH Attribute key for the strikethrough adornment.
static Boolean	STRIKETHROUGH_ON A single strikethrough.
static TextAttribute	SUPERSCRIPT Attribute key for super and subscripting.
static Integer	SUPERSCRIPT_SUB Standard subscript.
static Integer	SUPERSCRIPT_SUPER Standard superscript.
static TextAttribute	SWAP_COLORS Attribute key for swapping foreground and background Paints (or Colors).
static Boolean	SWAP_COLORS_ON Swap foreground and background.
static TextAttribute	TRANSFORM Attribute key for the transform of a font.
static TextAttribute	UNDERLINE Attribute key for underline adornments.
static Integer	UNDERLINE_LOW_DASHED Single pixel dashed low underline.
static Integer	UNDERLINE_LOW_DOTTED Single pixel dotted low underline.
static Integer	UNDERLINE_LOW_GRAY Double pixel gray low underline.
static Integer	UNDERLINE_LOW_ONE_PIXEL Single pixel solid low underline.
static Integer	UNDERLINE_LOW_TWO_PIXEL Double pixel solid low underline.
static Integer	UNDERLINE_ON Standard underline at the roman baseline for roman text, and below the decenders for other text.
static TextAttribute	WEIGHT Attribute key for the weight of a font.
static Float	WEIGHT_BOLD The standard bold weight.
static Float	WEIGHT_DEMIBOLD A moderately lighter weight than BOLD.
static Float	WEIGHT_DEMILIGHT An intermediate weight between LIGHT and STANDARD.
static Float	WEIGHT_EXTRA_LIGHT The lightest predefined weight.
static Float	WEIGHT_EXTRABOLD An extra heavy weight.
static Float	WEIGHT_HEAVY A moderately heavier weight than BOLD.
static Float	WEIGHT_LIGHT The standard light weight.
static Float	WEIGHT_MEDIUM An intermediate weight between the REGULAR and BOLD weights.
static Float	WEIGHT_REGULAR The standard weight.
static Float	WEIGHT_SEMIBOLD A moderately heavier weight than REGULAR.
static Float	WEIGHT_ULTRABOLD The heaviest predefined weight.
static TextAttribute	WIDTH Attribute key for the width of a font.
static Float	WIDTH_CONDENSED The most condensed predefined width.
static Float	WIDTH_EXTENDED The most extended predefined width.
static Float	WIDTH_REGULAR The standard width.
static Float	WIDTH_SEMI_CONDENSED A moderately condensed width.
static Float	WIDTH_SEMI_EXTENDED A moderately extended width.

Key	FAMILY
Value	String
Constants	"Serif", "SansSerif"
Default	Host default;
Description	The name of the font family. If the family name is not found, the default font is used. The name should not be the full font name or specify other attributes (such as the name "Helvetica Bold"). Such names might result in the default font if the name does not match a known family name.

Key	WEIGHT
Value	Float
Constants	WEIGHT_EXTRA_LIGHT = 0.5, WEIGHT_LIGHT = 0.75, WEIGHT_DEMILIGHT = 0.875, WEIGHT_REGULAR = 1.0, WEIGHT_SEMIBOLD = 1.25, WEIGHT_MEDIUM = 1.5, WEIGHT_DEMIBOLD = 1.75, WEIGHT_BOLD = 2.0, WEIGHT_HEAVY = 2.25, WEIGHT_EXTRABOLD = 2.5, WEIGHT_ULTRABOLD = 2.75
Default	WEIGHT_REGULAR
Description	The value is roughly the ratio of the stem width to that of the regular weight. If the font has a different value for specific constants, then the value is interpolated as described in the class description.
Fallback	Currently none. However, in the future, shape manipulations might be available to simulate weight variations for fonts that don't have them.

Key	WIDTH
Value	Float
Constants	WIDTH_CONDENSED = 0.75, WIDTH_SEMI_CONDENSED = 0.875, WIDTH_REGULAR = 1.0, WIDTH_SEMI_EXTENDED = 1.25, WIDTH_EXTENDED = 1.5
Default	WIDTH_REGULAR
Description	The value is roughly the ratio of the advance width to that of the regular width. If the font has a different value for specific constants, then the value is interpolated as described in the class description.
Fallback	If a Narrow font is available and matches, use that. Otherwise scale with a transform based on the value.

Key	POSTURE
Value	Float
Constants	POSTURE_REGULAR = 0, POSTURE_OBLIQUE = 0.20
Default	POSTURE_REGULAR
Description	The value is interpreted generally as a skew slope, positive leans to the right. If the font has a different value for specific constants, then the value is interpolated as described in the class description. With fonts that have italic faces, not only the skew of the character changes, but also the letter shapes might change. Notes: To set the value by angle, use: `value = new Float(Math.tan(Math.PIdegrees/180.0)` To determine the angle from the value, use: `angle = Math.atan(value.floatValue())180/Math.PI`
Fallback	If an Oblique font is available and matches, use that. Otherwise skew with a transform using the posture value interpreted as run/rise.

Key	SIZE
Value	Float
Default	from System Properties
Description	Represents point size. Note that the appearance and metrics of a 12pt font with a 2X transform might be different than that of a 24 point font with no transform.
Fallback	Scale to provided size.

Key	TRANSFORM
Value	TransformAttribute
Default	Identity transform
Description	Used to transform glyphs rendered by this font. The primary intent is to support scaling, skewing, and translation. In general, large rotations do not produce very useful results. The transform modifies both the glyph and the advance. The translations in the transform are interpreted as a ratio of the point size. That is, with a point size of 12, a translation of 0.5 results in a movement of 6 points. The advance point of the transformed glyph is the transform of the advance point projected onto the baseline. If the advance ends up to the left (top) of the glyph origin, the two points are swapped. Example one: The point size is 20, the original advance is 10.0, and the transform is a 60 degree counterclockwise rotation plus an offset up and to the right of 0.1, -0.1. The translation results in an offset of <2.0, -2.0>. The original advance point is <10.0, 0.0>; after the rotation it is <6.0, -8.0>; when adding the offset this becomes <8.0,-10.0>, when projecting on the (horizontal) baseline this becomes the new advance point: <8.0, 0.0>. The advance width is the distance from the origin to the advance point: 8.0. The rotated glyph is rendered two points up and to the right of its origin and rotated. This does not affect the baseline for subsequent glyphs.

Key	SUPERSCRIPT
Value	Integer
Constants	SUPERSCRIPT_NONE = 0, SUPERSCRIPT_SUPER = 1, SUPERSCRIPT_SUB = -1
Default	SUPERSCRIPT_NONE
Description	Requests that the font display the characters with glyphs at a particular superscript level: 0 = none, 1 = superscript, 2 = superscript of superscript,...-1 = subscript, -2 = subscript of subscript,... Requests that the font display text using default superscript (or subscript) glyphs and/or scaling.
Fallback	Use transform with translation of +/-1/2 and scale of 2/3, progressively for each level. That is, for the transform at level N (with N != 0): `offset = sign(N)1/2(2/3)^(abs(N)-1) scale = (2/3)^abs(N)`

Key	FONT
Value	Font
Default	None, perform default resolution
Description	A way for users to override the resolution of font attributes into a Font, or force use of a particular Font instance. This also allows users to specify subclasses of Font in cases where a Font can be subclassed.

Key	CHAR_REPLACEMENT
Value	GraphicAttribute
Description	Allows the user to specify an empty position plus metric information. This method is used to reserve space for a graphic or other embedded component. Required for correct BIDI position of 'inline' components within a line. An optional convenience method allows drawing for simple cases. Follows the Microsoft model: the character that this is applied to should be ?.

Key	FOREGROUND
Value	Paint
Default	Color.black
Description	Specify the foreground Paint (or Color) of the text.

Key	BACKGROUND
Value	Paint
Default	null
Description	Specify the background Paint (or Color) of the text.

Key	UNDERLINE
Value	Integer
Constants	UNDERLINE_ON = 0
Default	none
Description	An embellishment added to the glyphs rendered by a font.
Fallback

Key	STRIKETHROUGH
Value	Boolean
Constants	true = on, false = off
Default	off
Description	An embellishment added to the glyphs rendered by a font.

Key	RUN_DIRECTION
Value	Boolean
Constants	RUN_DIRECTION_LTR = true, RUN_DIRECTION_RTL = false
Default	Use the default Unicode base direction from the BIDI algorithm.
Description	Specifies which base run direction to use when positioning mixed directional runs within a paragraph. If this value is RUN_DIRECTION_DEFAULT, TextLayout uses the default Unicode base direction from the BIDI algorithm. This attribute should have the same value over the whole paragraph.

Key	BIDI_EMBEDDING
Value	Integer
Limits	Positive values 1 through 61 are embedding levels, negative values through -61 are override levels
Default	Use standard BIDI to compute levels from formatting characters in the text.
Description	Specifies the bidi embedding level of the character. When this attribute is present anywhere in a paragraph, then the Unicode characters RLO, LRO, RLE, LRE, PDF are disregarded in the BIDI analysis of that paragraph. See the Unicode Standard v. 2.0, section 3-11.

Key	JUSTIFICATION
Value	Float
Limits	0.0 through1.0
Default	1.0
Description	Specifies which fraction of the extra space to use when justification is requested. For example, if the line is 50 points wide and the margins are 70 points apart, a value of 0.5 means that the line is padded to reach a width of 60 points. This attribute should have the same value over the whole paragraph.

Key	INPUT_METHOD_UNDERLINE
Value	Integer
Constants	UNDERLINE_LOW_ONE_PIXEL, UNDERLINE_LOW_TWO_PIXEL, UNDERLINE_LOW_DOTTED, UNDERLINE_LOW_GRAY, UNDERLINE_LOW_DASHED
Default	no underline

java.awt.font Class TextAttribute

Types of Values

Interpolation

Field Summary

Constructor Summary

Method Summary

Field Detail

FAMILY

WEIGHT

WEIGHT_EXTRA_LIGHT

WEIGHT_LIGHT

WEIGHT_DEMILIGHT

WEIGHT_REGULAR

WEIGHT_SEMIBOLD

WEIGHT_MEDIUM

WEIGHT_DEMIBOLD

WEIGHT_BOLD

WEIGHT_HEAVY

WEIGHT_EXTRABOLD

WEIGHT_ULTRABOLD

WIDTH

WIDTH_CONDENSED

WIDTH_SEMI_CONDENSED

WIDTH_REGULAR

WIDTH_SEMI_EXTENDED

WIDTH_EXTENDED

POSTURE

POSTURE_REGULAR

POSTURE_OBLIQUE

SIZE

TRANSFORM

SUPERSCRIPT

SUPERSCRIPT_SUPER

SUPERSCRIPT_SUB

FONT

CHAR_REPLACEMENT

FOREGROUND

BACKGROUND

UNDERLINE

UNDERLINE_ON

STRIKETHROUGH

STRIKETHROUGH_ON

RUN_DIRECTION

RUN_DIRECTION_LTR

RUN_DIRECTION_RTL

BIDI_EMBEDDING

JUSTIFICATION

JUSTIFICATION_FULL

JUSTIFICATION_NONE

INPUT_METHOD_HIGHLIGHT

INPUT_METHOD_UNDERLINE

UNDERLINE_LOW_ONE_PIXEL

UNDERLINE_LOW_TWO_PIXEL

UNDERLINE_LOW_DOTTED

UNDERLINE_LOW_GRAY

UNDERLINE_LOW_DASHED

SWAP_COLORS

SWAP_COLORS_ON

NUMERIC_SHAPING

Constructor Detail

TextAttribute

Method Detail

readResolve

java.awt.font
Class TextAttribute