com.ngs.image.source
Class DefaultThumbnailSource

java.lang.Object
  com.ngs.image.ImageSource
      com.ngs.image.source.DefaultThumbnailSource

Direct Known Subclasses:

CompositeSource, ImageIOSource, JAIImageSource, PagelessSource

public abstract class DefaultThumbnailSource
extends ImageSource

Implements a default method of behavior for ImageSources to generate Thumbnails. By default, the thumbnail size is 100 x 200. This can be changed by the alternate constructor.

Author:

Bryan.Varner

Constructor Summary

protected	DefaultThumbnailSource() Constructs a DefaultThumbnailSource that generates Thumbnails 100x200 pixels.
protected	DefaultThumbnailSource(int thumbWidth, int thumbHeight) Constructs a DefaultThumbnailSource that generates Thumbnails with the specified dimensions

Method Summary

abstract void	dispose() Implements ImageSource
abstract BufferedImage	getImage(int index) Implements ImageSource
abstract int	getImageCount() Implements ImageSource
abstract String	getImageName() Implements ImageSource
Image	getThumbnail(int index) Returns a fast-scaled instance of getImage(index) the size of thumbWidth x thumbHeight.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DefaultThumbnailSource

protected DefaultThumbnailSource()

Constructs a DefaultThumbnailSource that generates Thumbnails 100x200 pixels.

DefaultThumbnailSource

protected DefaultThumbnailSource(int thumbWidth,
                                 int thumbHeight)

Constructs a DefaultThumbnailSource that generates Thumbnails with the specified dimensions

Parameters:

thumbWidth - the width of generated thumbnails

thumbHeight - the height of generated thumbnails

Method Detail

getImage

public abstract BufferedImage getImage(int index)

Implements ImageSource

Specified by:

getImage in class ImageSource

Parameters:

index - The image to obtain from this ImageSource.

Returns:

a BufferedImage.

getThumbnail

public Image getThumbnail(int index)

Returns a fast-scaled instance of getImage(index) the size of thumbWidth x thumbHeight.

Specified by:

getThumbnail in class ImageSource

Parameters:

index - The index of the image to retrieve.

Returns:

a BufferedImage.

getImageCount

public abstract int getImageCount()

Implements ImageSource

Specified by:

getImageCount in class ImageSource

Returns:

THe number of images in this ImageSource. Normally this will be 1.

dispose

public abstract void dispose()

Implements ImageSource

Specified by:

dispose in class ImageSource

getImageName

public abstract String getImageName()

Implements ImageSource

Specified by:

getImageName in class ImageSource