ch.randelshofer.pdf.plaf.util

Class HalfbrightFilter

java.lang.Object

java.awt.image.ImageFilter

java.awt.image.RGBImageFilter

ch.randelshofer.pdf.plaf.util.HalfbrightFilter

All Implemented Interfaces:

java.awt.image.ImageConsumer, java.lang.Cloneable

public class HalfbrightFilter
extends java.awt.image.RGBImageFilter

HalfbrightFilter reduces the brightness of an image by 50 percent. Leaves the alpha channel untouched. This is used by the PDF Look and Feel, to create a pressed image.

Version:

1.0 28 March 2005 Created.

Author:

Werner Randelshofer

Field Summary

Fields inherited from class java.awt.image.RGBImageFilter

canFilterIndexColorModel, newmodel, origmodel

Fields inherited from class java.awt.image.ImageFilter

consumer

Fields inherited from interface java.awt.image.ImageConsumer

COMPLETESCANLINES, IMAGEABORTED, IMAGEERROR, RANDOMPIXELORDER, SINGLEFRAME, SINGLEFRAMEDONE, SINGLEPASS, STATICIMAGEDONE, TOPDOWNLEFTRIGHT

Constructor Summary

Constructors

Constructor and Description
HalfbrightFilter() Creates a new instance.

Method Summary

Methods

Modifier and Type	Method and Description
static java.awt.Image	createHalfbrightImage(java.awt.Image i) Creates a halfbright image
int	filterRGB(int x, int y, int rgb)

Methods inherited from class java.awt.image.RGBImageFilter

filterIndexColorModel, filterRGBPixels, setColorModel, setPixels, setPixels, substituteColorModel

Methods inherited from class java.awt.image.ImageFilter

clone, getFilterInstance, imageComplete, resendTopDownLeftRight, setDimensions, setHints, setProperties

Methods inherited from class java.lang.Object

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

Constructor Detail

HalfbrightFilter

public HalfbrightFilter()

Creates a new instance.

Method Detail

createHalfbrightImage

public static java.awt.Image createHalfbrightImage(java.awt.Image i)

Creates a halfbright image

filterRGB

public int filterRGB(int x,
            int y,
            int rgb)

Specified by:

filterRGB in class java.awt.image.RGBImageFilter