| java.lang.Object
 java.awt.image.ImageFilter
java.awt.image.ReplicateScaleFilter
All known Subclasses: java.awt.image.AreaAveragingScaleFilter,
| ReplicateScaleFilter | | public class ReplicateScaleFilter extends ImageFilter (Code) | | An ImageFilter class for scaling images using the simplest algorithm.
This class extends the basic ImageFilter Class to scale an existing
image and provide a source for a new image containing the resampled
image. The pixels in the source image are sampled to produce pixels
for an image of the specified size by replicating rows and columns of
pixels to scale up or omitting rows and columns of pixels to scale
down.
It is meant to be used in conjunction with a FilteredImageSource
object to produce scaled versions of existing images.
See Also: FilteredImageSource
See Also: ImageFilter
version:
1.8 08/19/02
author:
Jim Graham |
| Field Summary | |
| protected int | destHeight
The target height to scale the image. | | protected int | destWidth
The target width to scale the image. | | protected Object | outpixbuf
A byte array initialized with a size of
ReplicateScaleFilter.destWidth and used to deliver a row of pixel
data to the
ImageConsumer . | | protected int | srcHeight
The height of the source image. | | protected int | srcWidth
The width of the source image. | | protected int | srccols
An int array containing information about a
column of pixels. | | protected int | srcrows
An int array containing information about a
row of pixels. |
| Constructor Summary | |
| public | ReplicateScaleFilter(int width, int height)
Constructs a ReplicateScaleFilter that scales the pixels from
its source Image as specified by the width and height parameters. |
| Method Summary | |
| public void | setDimensions(int w, int h)
Override the dimensions of the source image and pass the dimensions
of the new scaled size to the ImageConsumer.
Note: This method is intended to be called by the
ImageProducer of the Image whose pixels
are being filtered. | | public void | setPixels(int x, int y, int w, int h, ColorModel model, byte pixels, int off, int scansize)
Choose which rows and columns of the delivered byte pixels are
needed for the destination scaled image and pass through just
those rows and columns that are needed, replicated as necessary.
Note: This method is intended to be called by the
ImageProducer of the Image whose pixels
are being filtered. | | public void | setPixels(int x, int y, int w, int h, ColorModel model, int pixels, int off, int scansize)
Choose which rows and columns of the delivered int pixels are
needed for the destination scaled image and pass through just
those rows and columns that are needed, replicated as necessary.
Note: This method is intended to be called by the
ImageProducer of the Image whose pixels
are being filtered. | | public void | setProperties(Hashtable props)
Passes along the properties from the source object after adding a
property indicating the scale applied.
Note: This method is intended to be called by the
ImageProducer of the Image whose pixels
are being filtered. |
| destHeight | | protected int destHeight(Code) | | The target height to scale the image.
|
| destWidth | | protected int destWidth(Code) | | The target width to scale the image.
|
| srcHeight | | protected int srcHeight(Code) | | The height of the source image.
|
| srcWidth | | protected int srcWidth(Code) | | The width of the source image.
|
| srccols | | protected int srccols(Code) | | An int array containing information about a
column of pixels.
|
| srcrows | | protected int srcrows(Code) | | An int array containing information about a
row of pixels.
|
| ReplicateScaleFilter | | public ReplicateScaleFilter(int width, int height)(Code) | | Constructs a ReplicateScaleFilter that scales the pixels from
its source Image as specified by the width and height parameters.
Parameters:
width - the target width to scale the image
Parameters:
height - the target height to scale the image
throws:
IllegalArgumentException - if width equals zero or height equals zero |
| setDimensions | | public void setDimensions(int w, int h)(Code) | | Override the dimensions of the source image and pass the dimensions
of the new scaled size 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.
See Also: ImageConsumer |
| setPixels | | public void setPixels(int x, int y, int w, int h, ColorModel model, byte pixels, int off, int scansize)(Code) | | Choose which rows and columns of the delivered byte pixels are
needed for the destination scaled image and pass through just
those rows and columns that are needed, replicated as necessary.
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 | | public void setPixels(int x, int y, int w, int h, ColorModel model, int pixels, int off, int scansize)(Code) | | Choose which rows and columns of the delivered int pixels are
needed for the destination scaled image and pass through just
those rows and columns that are needed, replicated as necessary.
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 | | public void setProperties(Hashtable props)(Code) | | Passes along the properties from the source object after adding a
property indicating the scale applied.
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.
|
| Methods inherited from java.awt.image.ImageFilter | public Object clone()(Code)(Java Doc)
public ImageFilter getFilterInstance(ImageConsumer ic)(Code)(Java Doc)
public void imageComplete(int status)(Code)(Java Doc)
public void resendTopDownLeftRight(ImageProducer ip)(Code)(Java Doc)
public void setColorModel(ColorModel model)(Code)(Java Doc)
public void setDimensions(int width, int height)(Code)(Java Doc)
public void setHints(int hints)(Code)(Java Doc)
public void setPixels(int x, int y, int w, int h, ColorModel model, byte pixels, int off, int scansize)(Code)(Java Doc)
public void setPixels(int x, int y, int w, int h, ColorModel model, int pixels, int off, int scansize)(Code)(Java Doc)
public void setProperties(Hashtable props)(Code)(Java Doc)
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