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Java™ Platform Standard Ed. 6 |
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java.lang.Object java.awt.image.ImageFilter java.awt.image.CropImageFilter
public class 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.
FilteredImageSource
,
ImageFilter
Field Summary |
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Fields inherited from class java.awt.image.ImageFilter |
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consumer |
Fields inherited from interface java.awt.image.ImageConsumer |
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COMPLETESCANLINES, IMAGEABORTED, IMAGEERROR, RANDOMPIXELORDER, SINGLEFRAME, SINGLEFRAMEDONE, SINGLEPASS, STATICIMAGEDONE, TOPDOWNLEFTRIGHT |
Constructor Summary | |
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CropImageFilter(int x,
int y,
int w,
int h)
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. |
Method Summary | |
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void |
setDimensions(int w,
int h)
Override the source image's dimensions and pass the dimensions of the rectangular cropped region to the ImageConsumer. |
void |
setPixels(int x,
int y,
int w,
int h,
ColorModel model,
byte[] pixels,
int off,
int scansize)
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. |
void |
setPixels(int x,
int y,
int w,
int h,
ColorModel model,
int[] pixels,
int off,
int scansize)
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. |
void |
setProperties(Hashtable<?,?> props)
Passes along the properties from the source object after adding a property indicating the cropped region. |
Methods inherited from class java.awt.image.ImageFilter |
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clone, getFilterInstance, imageComplete, resendTopDownLeftRight, setColorModel, setHints |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public CropImageFilter(int x, int y, int w, int h)
x
- the x location of the top of the rectangle to be extractedy
- the y location of the top of the rectangle to be extractedw
- the width of the rectangle to be extractedh
- the height of the rectangle to be extractedMethod Detail |
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public void setProperties(Hashtable<?,?> props)
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.
setProperties
in interface ImageConsumer
setProperties
in class ImageFilter
props
- the properties from the source objectpublic void setDimensions(int w, int h)
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
setDimensions
in class ImageFilter
w
- the width of the source imageh
- the height of the source imageImageConsumer
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 ImageConsumer
setPixels
in class ImageFilter
x
- 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 ColorModel
pixels
- the array of pixelsoff
- the offset into the pixels
arrayscansize
- the distance from one row of pixels to the next in
the pixels
arrayImageConsumer.setPixels(int, int, int, int, java.awt.image.ColorModel, byte[], 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 ImageConsumer
setPixels
in class ImageFilter
x
- 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 ColorModel
pixels
- the array of pixelsoff
- the offset into the pixels
arrayscansize
- the distance from one row of pixels to the next in
the pixels
arrayImageConsumer.setPixels(int, int, int, int, java.awt.image.ColorModel, byte[], int, int)
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Java™ Platform Standard Ed. 6 |
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