API java : GrayFilter

javax.swing
Class GrayFilter

java.lang.Object
  java.awt.image.ImageFilter
      java.awt.image.RGBImageFilter
          javax.swing.GrayFilter

All Implemented Interfaces:

ImageConsumer, Cloneable

public class GrayFilter
extends RGBImageFilter

An image filter that "disables" an image by turning it into a grayscale image, and brightening the pixels in the image. Used by buttons to create an image for a disabled button.

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
GrayFilter(boolean b, int p)           Constructs a GrayFilter object that filters a color image to a grayscale image.

 

Method Summary
static Image	createDisabledImage(Image i)           Creates a disabled image
int	filterRGB(int x, int y, int rgb)           Overrides RGBImageFilter.filterRGB.

 

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

GrayFilter

public GrayFilter(boolean b,
                  int p)

Constructs a GrayFilter object that filters a color image to a grayscale image. Used by buttons to create disabled ("grayed out") button images.

Parameters:

b - a boolean -- true if the pixels should be brightened

p - an int in the range 0..100 that determines the percentage of gray, where 100 is the darkest gray, and 0 is the lightest

createDisabledImage

public static Image createDisabledImage(Image i)

Creates a disabled image

filterRGB

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

Overrides RGBImageFilter.filterRGB.

Specified by:

filterRGB in class RGBImageFilter

rgb - the integer pixel representation in the default RGB color model

Returns:

a filtered pixel in the default RGB color model.

See Also:

ColorModel.getRGBdefault(), RGBImageFilter.filterRGBPixels(int, int, int, int, int[], int, int)