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

Constructors

Constructor and 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 and Description
`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
- Method Detail
  - 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
    
    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)