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.

Since:: 1.2

Field Summary

Fields declared in class java.awt.image.RGBImageFilter

canFilterIndexColorModel, newmodel, origmodel

Fields declared in class java.awt.image.ImageFilter

consumer

Fields declared in interface java.awt.image.ImageConsumer

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

Constructor Summary

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

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static Image`	`createDisabledImage(Image i)`	Creates a disabled image
`int`	`filterRGB(int x, int y, int rgb)`	Overrides `RGBImageFilter.filterRGB`.

Methods declared in class java.awt.image.RGBImageFilter

filterIndexColorModel, filterRGBPixels, setColorModel, setPixels, setPixels, substituteColorModel

Methods declared in class java.awt.image.ImageFilter

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

Methods declared in 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

Method Detail

createDisabledImage

public static Image createDisabledImage(Image i)

Creates a disabled image

Parameters:: i - an Image to be created as disabled
Returns:: the new grayscale image created from i

filterRGB

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

Overrides RGBImageFilter.filterRGB.

Specified by:: filterRGB in class RGBImageFilter
Parameters:: x - the X coordinate of the pixel; y - the Y coordinate of the pixel; 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)