jdk.awt.image.ImageFilter — clojure-interop/java.awt 1.0.5

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.

->image-filter clj

(->image-filter)

Constructor.

clone clj

(clone this)

Clones this object.

returns: a clone of this instance. - java.lang.Object

get-filter-instance clj

(get-filter-instance this ic)

Returns a unique instance of an ImageFilter object which will actually perform the filtering for the specified ImageConsumer. The default implementation just clones this object.

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 - java.awt.image.ImageConsumer

returns: an ImageFilter used to perform the filtering for the specified ImageConsumer. - java.awt.image.ImageFilter

image-complete clj

(image-complete this status)

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

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.

status - the status of image loading - int

resend-top-down-left-right clj

(resend-top-down-left-right this ip)

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.

ip - the ImageProducer that is feeding this instance of the filter - also the ImageProducer that the request should be forwarded to if necessary - java.awt.image.ImageProducer

throws: java.lang.NullPointerException - if ip is null

set-color-model clj

(set-color-model this model)

Filter the information provided in the setColorModel method of the ImageConsumer interface.

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.

model - the specified ColorModel - java.awt.image.ColorModel

set-dimensions clj

(set-dimensions this width height)

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

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.

width - the width of the source image - int height - the height of the source image - int

set-hints clj

(set-hints this hints)

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

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.

hints - a set of hints that the ImageConsumer uses to process the pixels - int

set-pixels clj

(set-pixels this x y w h model pixels off scansize)

Filters the information provided in the setPixels method of the ImageConsumer interface which takes an array of bytes.

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.

x - the X coordinate of the upper-left corner of the area of pixels to be set - int y - the Y coordinate of the upper-left corner of the area of pixels to be set - int w - the width of the area of pixels - int h - the height of the area of pixels - int model - the specified ColorModel - java.awt.image.ColorModel pixels - the array of pixels - byte[] off - the offset into the pixels array - int scansize - the distance from one row of pixels to the next in the pixels array - int

set-properties clj

(set-properties this props)

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

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.

props - the properties from the source object - java.util.Hashtable

throws: java.lang.NullPointerException - if props is null