Package org.jdesktop.swingx.painter

Class AlphaPainter<T>

java.lang.Object

org.jdesktop.beans.AbstractBean

org.jdesktop.swingx.painter.AbstractPainter<T>

org.jdesktop.swingx.painter.CompoundPainter<T>

org.jdesktop.swingx.painter.AlphaPainter<T>

All Implemented Interfaces:

Painter<T>

public class AlphaPainter<T>
extends CompoundPainter<T>

Applies an alpha value to an entire stack of painters.

Author:

joshy

Nested Class Summary

Nested classes/interfaces inherited from class org.jdesktop.swingx.painter.AbstractPainter

AbstractPainter.Interpolation

Constructor Summary

Constructors

Constructor	Description
AlphaPainter()

Method Summary

Modifier and Type	Method	Description
protected void	doPaint(Graphics2D g, T component, int width, int height)	Subclasses must implement this method and perform custom painting operations here.
float	getAlpha()	Returns the current alpha value for this painter.
void	setAlpha(float alpha)	Sets the current alpha value for this painter.

Methods inherited from class org.jdesktop.beans.AbstractBean

addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, addVetoableChangeListener, clone, fireIndexedPropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, fireVetoableChange, getPropertyChangeListeners, getPropertyChangeListeners, getVetoableChangeListeners, getVetoableChangeListeners, hasPropertyChangeListeners, hasVetoableChangeListeners, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, removeVetoableChangeListener

Methods inherited from class org.jdesktop.swingx.painter.AbstractPainter

getFilters, getInterpolation, isAntialiasing, isCacheable, isVisible, paint, setAntialiasing, setCacheable, setFilters, setInterpolation, setVisible

Methods inherited from class org.jdesktop.swingx.painter.CompoundPainter

clearCache, clearLocalCache, configureGraphics, getPainters, getTransform, isCheckingDirtyChildPainters, isClipPreserved, isDirty, setCheckingDirtyChildPainters, setClipPreserved, setDirty, setPainters, setTransform, shouldUseCache, validate

Methods inherited from class java.lang.Object

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

Constructor Detail

AlphaPainter

public AlphaPainter()

Method Detail

doPaint

protected void doPaint(Graphics2D g,
                       T component,
                       int width,
                       int height)

Subclasses must implement this method and perform custom painting operations here.

Overrides:

doPaint in class CompoundPainter<T>

Parameters:

g - The Graphics2D object in which to paint

getAlpha

public float getAlpha()

Returns the current alpha value for this painter. This is the alpha value that will be applied to all painters set inside this painter. Alpha values will be multiplied. This means if you set an alpha of 0.5 on this painter and you nest a painter inside which uses an alpha of 0.5 then the final pixels drawn will have an alpha of 0.25.

Returns:

the current value of alpha property

setAlpha

public void setAlpha(float alpha)

Sets the current alpha value for this painter. This is the alpha value that will be applied to all painters set inside this painter. Alpha values will be multiplied. This means if you set an alpha of 0.5 on this painter and you nest a painter inside which uses an alpha of 0.5 then the final pixels drawn will have an alpha of 0.25.

Parameters:

alpha - the new value of the alpha property