java.lang.Object | ||
↳ | java.awt.image.ImageFilter | |
↳ | java.awt.image.CropImageFilter |
An ImageFilter class for cropping images. This class extends the basic ImageFilter Class to extract a given rectangular region of an existing Image and provide a source for a new image containing just the extracted region. It is meant to be used in conjunction with a FilteredImageSource object to produce cropped versions of existing images.
[Expand]
Inherited Constants | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
From interface
java.awt.image.ImageConsumer
|
[Expand]
Inherited Fields | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
From class
java.awt.image.ImageFilter
|
Public Constructors | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Constructs a CropImageFilter that extracts the absolute rectangular
region of pixels from its source Image as specified by the x, y,
w, and h parameters.
|
Public Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Override the source image's dimensions and pass the dimensions
of the rectangular cropped region to the ImageConsumer.
| |||||||||||
Determine if the delivered int pixels intersect the region to
be extracted and pass through only that subset of pixels that
appear in the output region.
| |||||||||||
Determine whether the delivered byte pixels intersect the region to
be extracted and passes through only that subset of pixels that
appear in the output region.
| |||||||||||
Passes along the properties from the source object after adding a
property indicating the cropped region.
|
[Expand]
Inherited Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
From class
java.awt.image.ImageFilter
| |||||||||||
From class
java.lang.Object
| |||||||||||
From interface
java.awt.image.ImageConsumer
|
Constructs a CropImageFilter that extracts the absolute rectangular region of pixels from its source Image as specified by the x, y, w, and h parameters.
x | the x location of the top of the rectangle to be extracted |
---|---|
y | the y location of the top of the rectangle to be extracted |
w | the width of the rectangle to be extracted |
h | the height of the rectangle to be extracted |
Override the source image's dimensions and pass the dimensions of the rectangular cropped region to the ImageConsumer.
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.
w | the width of the source image |
---|---|
h | the height of the source image |
Determine if the delivered int pixels intersect the region to be extracted and pass through only that subset of pixels that appear in the output region.
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 |
---|---|
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 |
Determine whether the delivered byte pixels intersect the region to be extracted and passes through only that subset of pixels that appear in the output region.
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 |
---|---|
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 |
Passes along the properties from the source object after adding a
property indicating the cropped region.
This method invokes super.setProperties
,
which might result in additional properties being added.
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 |
---|