java.awt.image

Class CropImageFilter

Implemented Interfaces:
Cloneable, ImageConsumer

public class CropImageFilter
extends ImageFilter

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.
See Also:
FilteredImageSource, ImageFilter

Field Summary

Fields inherited from class java.awt.image.ImageFilter

consumer

Fields inherited from interface java.awt.image.ImageConsumer

COMPLETESCANLINES, IMAGEABORTED, IMAGEERROR, RANDOMPIXELORDER, SINGLEFRAME, SINGLEFRAMEDONE, SINGLEPASS, STATICIMAGEDONE, TOPDOWNLEFTRIGHT

Constructor Summary

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

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, 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, 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

clone, getFilterInstance, imageComplete, resendTopDownLeftRight, setColorModel, setDimensions, setHints, setPixels, setPixels, setProperties

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CropImageFilter

public 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.
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
Usages and Demos :

View More Examples of CropImageFilter(int x,int y,int w,int h)
   1:     im2=im1;
   2:     ImageFilter filt=new CropImageFilter(10,5,150,150);
   3:     ImageProducer pro=new FilteredImageSource(im1.getSource(),filt);
   4:     im2=createImage(pro);
   5:   }

View Full Code Here
   1:         }    
   2:         ImageFilter filter = new CropImageFilter(110,5,100,100);
   3:         FilteredImageSource fis = new FilteredImageSource(im.getSource(), filter);
   4:         cropped = createImage(fis);    
   5:     }

View Full Code Here
   1:       if (style.getIsImageDrawn()) {
   2:     CropImageFilter cropFilter = new CropImageFilter(pmsource.x, pMsource.y, pMsource.x - pmsource.x + 1, pmsource.y - pMsource.y + 1);
   3:     ImageProducer cropProducer = new FilteredImageSource(image.getSource(), cropFilter);
   4:     java.awt.Image cropImage = visu.createImage(cropProducer);
   5:     ImageFilter filter = new AreaAveragingScaleFilter(pMdest.x  -pmdest.x + 1,pmdest.y - pMdest.y + 1);

View Full Code Here
   1:    {
   2:       ImageFilter filter = new CropImageFilter(x, y, w, h);
   3:       FilteredImageSource source = new FilteredImageSource(img.getSource(), filter);
   4:       return Toolkit.getDefaultToolkit().createImage(source);
   5:    }

View Full Code Here
   1:             Rectangle rectangle = (Rectangle)_fldfor.get(s1 + s2);
   2:             image = Toolkit.getDefaultToolkit().createImage(new FilteredImageSource(_flddo[i], new CropImageFilter(rectangle.x, rectangle.y, rectangle.width, rectangle.height)));
   3:         }
   4:         return image;
   5:     }

View Full Code Here

Method Details

setDimensions

public void setDimensions(int w,
                          int h)
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.

Specified by:
setDimensions in interface ImageConsumer
Overrides:
setDimensions in interface ImageFilter
See Also:
ImageConsumer

setPixels

public void setPixels(int x,
                      int y,
                      int w,
                      int h,
                      ColorModel model,
                      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.

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.

Specified by:
setPixels in interface ImageConsumer
Overrides:
setPixels in interface ImageFilter

setPixels

public void setPixels(int x,
                      int y,
                      int w,
                      int h,
                      ColorModel model,
                      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.

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.

Specified by:
setPixels in interface ImageConsumer
Overrides:
setPixels in interface ImageFilter

setProperties

public void setProperties(Hashtable props)
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.

Specified by:
setProperties in interface ImageConsumer
Overrides:
setProperties in interface ImageFilter