RGBImageFilter JDK 1.6)

Methods

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public Object clone () [Inherited From ImageFilter]

Clones this object.

public IndexColorModel filterIndexColorModel (IndexColorModel icm)

Filters an IndexColorModel object by running each entry in its color tables through the filterRGB function that RGBImageFilter subclasses must provide.

Filters an IndexColorModel object by running each entry in its
color tables through the filterRGB function that RGBImageFilter
subclasses must provide. Uses coordinates of -1 to indicate that
a color table entry is being filtered rather than an actual
pixel value.
Returns: a new IndexColorModel representing the filtered colors
Parameters:
- icm - the IndexColorModel object to be filtered
Throws:
- NullPointerException - if icm is null

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

Subclasses must specify a method to convert a single input pixel in the default RGB ColorModel to a single output pixel.

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

Filters a buffer of pixels in the default RGB ColorModel by passing them one by one through the filterRGB method.

Filters a buffer of pixels in the default RGB ColorModel by passing
them one by one through the filterRGB method.
Parameters:
- x - the X coordinate of the upper-left corner of the region of pixels
- y - the Y coordinate of the upper-left corner of the region of pixels
- w - the width of the region of pixels
- h - the height of the region of pixels
- pixels - the array of pixels
- off - the offset into the pixels array
- scansize - the distance from one row of pixels to the next in the array
See Also: ColorModel.getRGBdefault(), RGBImageFilter.filterRGB(int, int, int),

public ImageFilter getFilterInstance (ImageConsumer ic) [Inherited From ImageFilter]

Returns a unique instance of an ImageFilter object which will actually perform the filtering for the specified ImageConsumer.

public void imageComplete (int status) [Inherited From ImageFilter]

Filters the information provided in the imageComplete method of the ImageConsumer interface.

public void resendTopDownLeftRight (ImageProducer ip) [Inherited From ImageFilter]

Responds to a request for a TopDownLeftRight (TDLR) ordered resend of the pixel data from an ImageConsumer.

Responds to a request for a TopDownLeftRight (TDLR) ordered resend of the pixel data from an ImageConsumer. When an ImageConsumer being fed by an instance of this ImageFilter requests a resend of the data in TDLR order, the FilteredImageSource invokes this method of the ImageFilter.

An ImageFilter subclass might override this method or not, depending on if and how it can send data in TDLR order. Three possibilities exist:

Do not override this method. This makes the subclass use the default implementation, which is to forward the request to the indicated ImageProducer using this filter as the requesting ImageConsumer. This behavior is appropriate if the filter can determine that it will forward the pixels in TDLR order if its upstream producer object sends them in TDLR order.
Override the method to simply send the data. This is appropriate if the filter can handle the request itself — for example, if the generated pixels have been saved in some sort of buffer.
Override the method to do nothing. This is appropriate if the filter cannot produce filtered data in TDLR order.

Parameters:
- ip - the ImageProducer that is feeding this instance of the filter - also the ImageProducer that the request should be forwarded to if necessary
Throws:
- NullPointerException - if ip is null
See Also: ImageProducer.requestTopDownLeftRightResend(java.awt.image.ImageConsumer),

public void setColorModel (ColorModel model) [Overrides ImageFilter]

If the ColorModel is an IndexColorModel and the subclass has set the canFilterIndexColorModel flag to true, we substitute a filtered version of the color model here and wherever that original ColorModel object appears in the setPixels methods.

public void setDimensions (int width, int height) [Inherited From ImageFilter]

Filters the information provided in the setDimensions method of the ImageConsumer interface.

public void setHints (int hints) [Inherited From ImageFilter]

Filters the information provided in the setHints method of the ImageConsumer interface.

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

If the ColorModel object is the same one that has already been converted, then simply passes the pixels through with the converted ColorModel.

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

If the ColorModel object is the same one that has already been converted, then simply passes the pixels through with the converted ColorModel, otherwise converts the buffer of integer pixels to the default RGB ColorModel and passes the converted buffer to the filterRGBPixels method to be converted one by one.

public void setProperties (Hashtable<Object, Object> props) [Inherited From ImageFilter]

Passes the properties from the source object along after adding a property indicating the stream of filters it has been run through.

public void substituteColorModel (ColorModel oldcm, ColorModel newcm)

Registers two ColorModel objects for substitution.