Java Module java.desktop Package java.awt.font Class GraphicAttribute（JDK11）

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java.lang.Object
- java.awt.font.GraphicAttribute

Direct Known Subclasses:

ImageGraphicAttribute, ShapeGraphicAttribute
```
public abstract class GraphicAttribute
extends Object
```
This class is used with the CHAR_REPLACEMENT attribute.
The GraphicAttribute class represents a graphic embedded in text. Clients subclass this class to implement their own char replacement graphics. Clients wishing to embed shapes and images in text need not subclass this class. Instead, clients can use the ShapeGraphicAttribute and ImageGraphicAttribute classes.

Subclasses must ensure that their objects are immutable once they are constructed. Mutating a GraphicAttribute that is used in a TextLayout results in undefined behavior from the TextLayout.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`BOTTOM_ALIGNMENT`	Aligns bottom of graphic to bottom of line.
`static int`	`CENTER_BASELINE`	Aligns origin of graphic to center baseline of line.
`static int`	`HANGING_BASELINE`	Aligns origin of graphic to hanging baseline of line.
`static int`	`ROMAN_BASELINE`	Aligns origin of graphic to roman baseline of line.
`static int`	`TOP_ALIGNMENT`	Aligns top of graphic to top of line.

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`GraphicAttribute(int alignment)`	Constructs a `GraphicAttribute`.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract void`	`draw(Graphics2D graphics, float x, float y)`	Renders this `GraphicAttribute` at the specified location.
`abstract float`	`getAdvance()`	Returns the advance of this `GraphicAttribute`.
`int`	`getAlignment()`	Returns the alignment of this `GraphicAttribute`.
`abstract float`	`getAscent()`	Returns the ascent of this `GraphicAttribute`.
`Rectangle2D`	`getBounds()`	Returns a `Rectangle2D` that encloses all of the bits drawn by this `GraphicAttribute` relative to the rendering position.
`abstract float`	`getDescent()`	Returns the descent of this `GraphicAttribute`.
`GlyphJustificationInfo`	`getJustificationInfo()`	Returns the justification information for this `GraphicAttribute`.
`Shape`	`getOutline(AffineTransform tx)`	Return a `Shape` that represents the region that this `GraphicAttribute` renders.

Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - TOP_ALIGNMENT
```
public static final int TOP_ALIGNMENT
```
    Aligns top of graphic to top of line.
    
    See Also:
    
    Constant Field Values
  - BOTTOM_ALIGNMENT
```
public static final int BOTTOM_ALIGNMENT
```
    Aligns bottom of graphic to bottom of line.
    
    See Also:
    
    Constant Field Values
  - ROMAN_BASELINE
```
public static final int ROMAN_BASELINE
```
    Aligns origin of graphic to roman baseline of line.
    
    See Also:
    
    Constant Field Values
  - CENTER_BASELINE
```
public static final int CENTER_BASELINE
```
    Aligns origin of graphic to center baseline of line.
    
    See Also:
    
    Constant Field Values
  - HANGING_BASELINE
```
public static final int HANGING_BASELINE
```
    Aligns origin of graphic to hanging baseline of line.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - GraphicAttribute
```
protected GraphicAttribute(int alignment)
```
    Constructs a GraphicAttribute. Subclasses use this to define the alignment of the graphic.
    
    Parameters:
    
    alignment - an int representing one of the GraphicAttribute alignment fields
    
    Throws:
    
    IllegalArgumentException - if alignment is not one of the five defined values.
- Method Detail
  - getAscent
```
public abstract float getAscent()
```
    Returns the ascent of this GraphicAttribute. A graphic can be rendered above its ascent.
    
    Returns:
    
    the ascent of this GraphicAttribute.
    
    See Also:
    
    getBounds()
  - getDescent
```
public abstract float getDescent()
```
    Returns the descent of this GraphicAttribute. A graphic can be rendered below its descent.
    
    Returns:
    
    the descent of this GraphicAttribute.
    
    See Also:
    
    getBounds()
  - getAdvance
```
public abstract float getAdvance()
```
    Returns the advance of this GraphicAttribute. The GraphicAttribute object's advance is the distance from the point at which the graphic is rendered and the point where the next character or graphic is rendered. A graphic can be rendered beyond its advance
    
    Returns:
    
    the advance of this GraphicAttribute.
    
    See Also:
    
    getBounds()
  - getBounds
```
public Rectangle2D getBounds()
```
    Returns a Rectangle2D that encloses all of the bits drawn by this GraphicAttribute relative to the rendering position. A graphic may be rendered beyond its origin, ascent, descent, or advance; but if it is, this method's implementation must indicate where the graphic is rendered. Default bounds is the rectangle (0, -ascent, advance, ascent+descent).
    
    Returns:
    
    a Rectangle2D that encloses all of the bits rendered by this GraphicAttribute.
  - getOutline
```
public Shape getOutline(AffineTransform tx)
```
    Return a Shape that represents the region that this GraphicAttribute renders. This is used when a TextLayout is requested to return the outline of the text. The (untransformed) shape must not extend outside the rectangular bounds returned by getBounds. The default implementation returns the rectangle returned by getBounds(), transformed by the provided AffineTransform if present.
    
    Parameters:
    
    tx - an optional AffineTransform to apply to the outline of this GraphicAttribute. This can be null.
    
    Returns:
    
    a Shape representing this graphic attribute, suitable for stroking or filling.
    
    Since:
    
    1.6
  - draw
```
public abstract void draw(Graphics2D graphics,
                          float x,
                          float y)
```
    Renders this GraphicAttribute at the specified location.
    
    Parameters:
    
    graphics - the Graphics2D into which to render the graphic
    
    x - the user-space X coordinate where the graphic is rendered
    
    y - the user-space Y coordinate where the graphic is rendered
  - getAlignment
```
public final int getAlignment()
```
    Returns the alignment of this GraphicAttribute. Alignment can be to a particular baseline, or to the absolute top or bottom of a line.
    
    Returns:
    
    the alignment of this GraphicAttribute.
  - getJustificationInfo
```
public GlyphJustificationInfo getJustificationInfo()
```
    Returns the justification information for this GraphicAttribute. Subclasses can override this method to provide different justification information.
    
    Returns:
    
    a GlyphJustificationInfo object that contains the justification information for this GraphicAttribute.

Java Module java.desktop Package java.awt.font Class GraphicAttribute（JDK11）

Class GraphicAttribute

Field Summary

Constructor Summary

Method Summary

Methods declared in class java.lang.Object

Field Detail

TOP_ALIGNMENT

BOTTOM_ALIGNMENT

ROMAN_BASELINE

CENTER_BASELINE

HANGING_BASELINE

Constructor Detail

GraphicAttribute

Method Detail

getAscent

getDescent

getAdvance

getBounds

getOutline

draw

getAlignment

getJustificationInfo