ch.randelshofer.pdf.plaf.util

Class ShadowFilter

java.lang.Object

java.awt.image.ImageFilter

java.awt.image.RGBImageFilter

ch.randelshofer.pdf.plaf.util.ShadowFilter

All Implemented Interfaces:

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

public class ShadowFilter
extends java.awt.image.RGBImageFilter

ShadowFilter changes the color of an image to all black, and reduces the alpha channel to 50 percent. This is used by the PDF Look and Feel, to create a shadow 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
ShadowFilter() Creates a new instance.

Method Summary

Methods

Modifier and Type	Method and Description
static java.awt.Image	createShadowImage(java.awt.Image i) Creates a shadow 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

ShadowFilter

public ShadowFilter()

Creates a new instance.

Method Detail

createShadowImage

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

Creates a shadow image

filterRGB

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

Specified by:

filterRGB in class java.awt.image.RGBImageFilter