java.awt.image

Class RGBImageFilter

public abstract class RGBImageFilter extends ImageFilter

A filter designed to filter images in the default RGBColorModel regardless of the ImageProducer's ColorModel.

Field Summary
protected boolean	canFilterIndexColorModel Specifies whether to apply the filter to the index entries of the IndexColorModel.
protected ColorModel	newmodel
protected ColorModel	origmodel

Constructor Summary
	RGBImageFilter() Construct new RGBImageFilter.

Method Summary
IndexColorModel	filterIndexColorModel(IndexColorModel icm) Filters an IndexColorModel through the filterRGB function.
abstract int	filterRGB(int x, int y, int rgb) Filters a single pixel from the default ColorModel.
void	filterRGBPixels(int x, int y, int w, int h, int[] pixels, int offset, int scansize) This functions filters a set of RGB pixels through filterRGB.
void	setColorModel(ColorModel model) Sets the ColorModel used to filter with.
void	setPixels(int x, int y, int w, int h, ColorModel model, byte[] pixels, int offset, int scansize) If the ColorModel is the same ColorModel which as already converted then it converts it the converted ColorModel.
void	setPixels(int x, int y, int w, int h, ColorModel model, int[] pixels, int offset, int scansize) This function delivers a rectangle of pixels where any pixel(m,n) is stored in the array as an `int` at index (n * scansize + m + offset).
void	substituteColorModel(ColorModel oldcm, ColorModel newcm) Registers a new ColorModel to subsitute for the old ColorModel when setPixels encounters the a pixel with the old ColorModel.

Field Detail

canFilterIndexColorModel

protected boolean canFilterIndexColorModel

Specifies whether to apply the filter to the index entries of the IndexColorModel. Subclasses should set this to true if the filter does not depend on the pixel's coordinate.

Constructor Detail

RGBImageFilter

public RGBImageFilter()

Construct new RGBImageFilter.

Method Detail

filterIndexColorModel

public IndexColorModel filterIndexColorModel(IndexColorModel icm)

Filters an IndexColorModel through the filterRGB function. Uses coordinates of -1 to indicate its filtering an index and not a pixel.

Parameters: icm an IndexColorModel to filter

filterRGB

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

Filters a single pixel from the default ColorModel.

Parameters: x x-coordinate y y-coordinate rgb color

filterRGBPixels

public void filterRGBPixels(int x, int y, int w, int h, int[] pixels, int offset, int scansize)

This functions filters a set of RGB pixels through filterRGB.

Parameters: x the x coordinate of the rectangle y the y coordinate of the rectangle w the width of the rectangle h the height of the rectangle pixels the array of pixel values offset the index of the first pixels in the pixels array scansize the width to use in extracting pixels from the pixels array

setColorModel

public void setColorModel(ColorModel model)

Sets the ColorModel used to filter with. If the specified ColorModel is IndexColorModel and canFilterIndexColorModel is true, we subsitute the ColorModel for a filtered one here and in setPixels whenever the original one appears. Otherwise overrides the default ColorModel of ImageProducer and specifies the default RGBColorModel

Parameters: model the color model to be used most often by setPixels

setPixels

public void setPixels(int x, int y, int w, int h, ColorModel model, byte[] pixels, int offset, int scansize)

If the ColorModel is the same ColorModel which as already converted then it converts it the converted ColorModel. Otherwise it passes the array of pixels through filterRGBpixels.

Parameters: x the x coordinate of the rectangle y the y coordinate of the rectangle w the width of the rectangle h the height of the rectangle model the ColorModel used to translate the pixels pixels the array of pixel values offset the index of the first pixels in the pixels array scansize the width to use in extracting pixels from the pixels array

setPixels

public void setPixels(int x, int y, int w, int h, ColorModel model, int[] pixels, int offset, int scansize)

This function delivers a rectangle of pixels where any pixel(m,n) is stored in the array as an int at index (n * scansize + m + offset).

substituteColorModel

public void substituteColorModel(ColorModel oldcm, ColorModel newcm)

Registers a new ColorModel to subsitute for the old ColorModel when setPixels encounters the a pixel with the old ColorModel. The pixel remains unchanged except for a new ColorModel.

Parameters: oldcm the old ColorModel newcm the new ColorModel