ImageConsumer, Cloneable
BufferedImageFilter, CropImageFilter, ReplicateScaleFilter, RGBImageFilter
This class implements a filter for the set of interface methods that are used to deliver data from an ImageProducer to an ImageConsumer. It is meant to be used in conjunction with a FilteredImageSource object to produce filtered versions of existing images. It is a base class that provides the calls needed to implement a "Null filter" which has no effect on the data being passed through. Filters should subclass this class and override the methods which deal with the data that needs to be filtered and modify it as necessary.
Fields
The consumer of the particular image data stream for which this instance of the ImageFilter is filtering data.
Constructors
Constructs an ImageFilter.
Returns a unique instance of an ImageFilter object which will actually perform the filtering for the specified ImageConsumer.
void
Filters the information provided in the imageComplete method of the ImageConsumer interface.
void
Responds to a request for a TopDownLeftRight (TDLR) ordered resend of the pixel data from an ImageConsumer.
void
Filter the information provided in the setColorModel method of the ImageConsumer interface.
void
Filters the information provided in the setDimensions method of the ImageConsumer interface.
void
Filters the information provided in the setHints method of the ImageConsumer interface.
void
Filters the information provided in the setPixels method of the ImageConsumer interface which takes an array of bytes.
void
Filters the information provided in the setPixels method of the ImageConsumer interface which takes an array of integers.
void
Passes the properties from the source object along after adding a property indicating the stream of filters it has been run through.
The consumer of the particular image data stream for which this instance of the ImageFilter is filtering data. It is not initialized during the constructor, but rather during the getFilterInstance() method call when the FilteredImageSource is creating a unique instance of this object for a particular image data stream.
public ImageFilter()
Constructs an ImageFilter.
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.
ic - the specified ImageConsumer
ImageFilter used to perform the filtering for the specified ImageConsumer.
public void setDimensions(int width, int height)
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.
setDimensions in interface ImageConsumer
width - the width of the source image
height - the height of the source image
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.
setProperties in interface ImageConsumer
props - the properties from the source object
NullPointerException - if props is null
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 ImageConsumer
model - the specified ColorModel
public void setHints(int hints)
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.
setHints in interface ImageConsumer
hints - a set of hints that the ImageConsumer uses to process the pixels
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 ImageConsumer
x - the X coordinate of the upper-left corner of the area of pixels to be set
y - the Y coordinate of the upper-left corner of the area of pixels to be set
w - the width of the area of pixels
h - the height of the area of pixels
model - the specified ColorModel
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 pixels array
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 ImageConsumer
x - the X coordinate of the upper-left corner of the area of pixels to be set
y - the Y coordinate of the upper-left corner of the area of pixels to be set
w - the width of the area of pixels
h - the height of the area of pixels
model - the specified ColorModel
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 pixels array
public void imageComplete(int status)
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.
imageComplete in interface ImageConsumer
status - the status of image loading
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:
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.ip - the ImageProducer that is feeding this instance of the filter - also the ImageProducer that the request should be forwarded to if necessary
NullPointerException - if ip is null
Clones this object.
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