Java™ Platform
Standard Ed. 6

javax.swing
Class GrayFilter

java.lang.Object
  extended by java.awt.image.ImageFilter
      extended by java.awt.image.RGBImageFilter
          extended by 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
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)

Java™ Platform
Standard Ed. 6

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