Class java.awt.image.CropImageFilter - JDK 5 Documentation v1.1.8, Java 2 SDK 英文文档

All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class java.awt.image.CropImageFilter

java.lang.Object
   |
   +----java.awt.image.ImageFilter
           |
           +----java.awt.image.CropImageFilter

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

CropImageFilter(int, int, int, int): 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.

setDimensions(int, int): Override the source image's dimensions and pass the dimensions of the rectangular cropped region to the ImageConsumer.
setPixels(int, int, int, int, ColorModel, byte[], int, int): 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.
setPixels(int, int, int, int, ColorModel, int[], int, int): 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.
setProperties(Hashtable): Passes along the properties from the source object after adding a property indicating the cropped region.

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

setProperties

 public void setProperties(Hashtable props)

Passes along the properties from the source object after adding a property indicating the cropped region.

Overrides:: setProperties in class ImageFilter

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.

Overrides:: setDimensions in class ImageFilter
See Also:: ImageConsumer

setPixels

 public 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.

Overrides:: setPixels in class ImageFilter

setPixels

 public 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.

Overrides:: setPixels in class ImageFilter

All Packages  Class Hierarchy  This Package  Previous  Next  Index

Submit a bug or feature - Version 1.1.8 of Java Platform API Specification
Java is a trademark or registered trademark of Sun Microsystems, Inc. in the US and other countries.
Copyright 1995-1999 Sun Microsystems, Inc. 901 San Antonio Road,
Palo Alto, California, 94303, U.S.A. All Rights Reserved.