public abstract class RGBImageFilter extends ImageFilter
class RedBlueSwapFilter extends RGBImageFilter {
public RedBlueSwapFilter() {
// The filter's operation does not depend on the
// pixel's location, so IndexColorModels can be
// filtered directly.
canFilterIndexColorModel = true;
}
public int filterRGB(int x, int y, int rgb) {
return ((rgb & 0xff00ff00)
| ((rgb & 0xff0000) >> 16)
| ((rgb & 0xff) << 16));
}
}
FilteredImageSource,
ImageFilter,
ColorModel.getRGBdefault()| Modifier and Type | Field and Description |
|---|---|
protected boolean |
canFilterIndexColorModel
This boolean indicates whether or not it is acceptable to apply
the color filtering of the filterRGB method to the color table
entries of an IndexColorModel object in lieu of pixel by pixel
filtering.
|
protected ColorModel |
newmodel
The
ColorModel with which to
replace origmodel when the user calls
substituteColorModel. |
protected ColorModel |
origmodel
|
consumerCOMPLETESCANLINES, IMAGEABORTED, IMAGEERROR, RANDOMPIXELORDER, SINGLEFRAME, SINGLEFRAMEDONE, SINGLEPASS, STATICIMAGEDONE, TOPDOWNLEFTRIGHT| Constructor and Description |
|---|
RGBImageFilter() |
| Modifier and Type | Method and Description |
|---|---|
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.
|
abstract 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.
|
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.
|
void |
setColorModel(ColorModel model)
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.
|
void |
setPixels(int x,
int y,
int w,
int h,
ColorModel model,
byte[] pixels,
int off,
int scansize)
If the ColorModel object is the same one that has already
been converted, then simply passes the pixels through with the
converted ColorModel.
|
void |
setPixels(int x,
int y,
int w,
int h,
ColorModel model,
int[] pixels,
int off,
int scansize)
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.
|
void |
substituteColorModel(ColorModel oldcm,
ColorModel newcm)
Registers two ColorModel objects for substitution.
|
clone, getFilterInstance, imageComplete, resendTopDownLeftRight, setDimensions, setHints, setPropertiesprotected ColorModel origmodel
protected ColorModel newmodel
ColorModel with which to
replace origmodel when the user calls
substituteColorModel.protected boolean canFilterIndexColorModel
public void setColorModel(ColorModel model)
Note: This method is intended to be called by the
ImageProducer of the Image whose pixels
are being filtered. Developers using
this class to filter pixels from an image should avoid calling
this method directly since that operation could interfere
with the filtering operation.
setColorModel in interface ImageConsumersetColorModel in class ImageFiltermodel - the specified ColorModelImageConsumer,
ColorModel.getRGBdefault()public void substituteColorModel(ColorModel oldcm, ColorModel newcm)
oldcm - the ColorModel object to be replaced on the flynewcm - the ColorModel object to replace oldcm on the flypublic IndexColorModel filterIndexColorModel(IndexColorModel icm)
icm - the IndexColorModel object to be filteredNullPointerException - if icm is nullpublic void filterRGBPixels(int x,
int y,
int w,
int h,
int[] pixels,
int off,
int scansize)
x - the X coordinate of the upper-left corner of the region
of pixelsy - the Y coordinate of the upper-left corner of the region
of pixelsw - the width of the region of pixelsh - the height of the region of pixelspixels - the array of pixelsoff - the offset into the pixels arrayscansize - the distance from one row of pixels to the next
in the arrayColorModel.getRGBdefault(),
filterRGB(int, int, int)public void setPixels(int x,
int y,
int w,
int h,
ColorModel model,
byte[] pixels,
int off,
int scansize)
Note: This method is intended to be called by the
ImageProducer of the Image whose pixels
are being filtered. Developers using
this class to filter pixels from an image should avoid calling
this method directly since that operation could interfere
with the filtering operation.
setPixels in interface ImageConsumersetPixels in class ImageFilterx - the X coordinate of the upper-left corner of the
area of pixels to be sety - the Y coordinate of the upper-left corner of the
area of pixels to be setw - the width of the area of pixelsh - the height of the area of pixelsmodel - the specified ColorModelpixels - the array of pixelsoff - the offset into the pixels arrayscansize - the distance from one row of pixels to the next in
the pixels arrayColorModel.getRGBdefault(),
filterRGBPixels(int, int, int, int, int[], int, int)public void setPixels(int x,
int y,
int w,
int h,
ColorModel model,
int[] pixels,
int off,
int scansize)
Note: This method is intended to be called by the
ImageProducer of the Image whose pixels
are being filtered. Developers using
this class to filter pixels from an image should avoid calling
this method directly since that operation could interfere
with the filtering operation.
setPixels in interface ImageConsumersetPixels in class ImageFilterx - the X coordinate of the upper-left corner of the
area of pixels to be sety - the Y coordinate of the upper-left corner of the
area of pixels to be setw - the width of the area of pixelsh - the height of the area of pixelsmodel - the specified ColorModelpixels - the array of pixelsoff - the offset into the pixels arrayscansize - the distance from one row of pixels to the next in
the pixels arrayColorModel.getRGBdefault(),
filterRGBPixels(int, int, int, int, int[], int, int)public abstract int filterRGB(int x,
int y,
int rgb)
x - the X coordinate of the pixely - the Y coordinate of the pixelrgb - the integer pixel representation in the default RGB
color modelColorModel.getRGBdefault(),
filterRGBPixels(int, int, int, int, int[], int, int) Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2016, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.