org.hippoecm.frontend.plugins.gallery.model

Class DefaultGalleryProcessor

java.lang.Object

org.hippoecm.frontend.plugins.gallery.model.DefaultGalleryProcessor

All Implemented Interfaces:

Serializable, org.apache.wicket.IClusterable, GalleryProcessor

Direct Known Subclasses:

NullGalleryProcessor

public class DefaultGalleryProcessor
extends Object
implements GalleryProcessor

Gallery processor that puts a resized version of the image in the primary item and populates other resource child nodes with the original.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DefaultGalleryProcessor.UnsupportedMimeTypeException

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_THUMBNAIL_SIZE

Constructor Summary

Constructors

Constructor and Description
DefaultGalleryProcessor()

Method Summary

Methods

Modifier and Type	Method and Description
InputStream	createThumbnail(InputStream imageData, int maxSize, String mimeType) Creates a thumbnail version of an image.
Dimension	getDesiredResourceDimension(javax.jcr.Node node)
BufferedImage	getScaledInstance(BufferedImage img, int targetWidth, int targetHeight, Object hint, boolean higherQuality) Convenience method that returns a scaled instance of the provided BufferedImage.
int	getThumbnailSize()
void	initGalleryResource(javax.jcr.Node node, InputStream data, String mimeType, String fileName, Calendar lastModified)
boolean	isUpscalingEnabled(javax.jcr.Node node)
void	makeImage(javax.jcr.Node node, InputStream istream, String mimeType, String fileName)
protected void	makeRegularImage(javax.jcr.Node node, String name, InputStream istream, String mimeType, Calendar lastModified)
protected void	makeThumbnailImage(javax.jcr.Node node, InputStream resourceData, String mimeType)
void	setThumbnailSize(int thumbnailSize)
void	validateResource(javax.jcr.Node node, String fileName)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_THUMBNAIL_SIZE

public static final int DEFAULT_THUMBNAIL_SIZE

See Also:

Constant Field Values

Constructor Detail

DefaultGalleryProcessor

public DefaultGalleryProcessor()

Method Detail

setThumbnailSize

public void setThumbnailSize(int thumbnailSize)

getThumbnailSize

public int getThumbnailSize()

createThumbnail

public InputStream createThumbnail(InputStream imageData,
                          int maxSize,
                          String mimeType)
                            throws GalleryException

Creates a thumbnail version of an image. The maxsize parameter determines how the image is scaled: it is the maximum size of both the width and height. If the original height is greater than the original width, then the height of the scaled image will be equal to max size. The same goes for the original width: if it is greater than the original height, the width of the scaled image is equal to maxsize.

Parameters:

imageData - the original image data; the input stream is closed by this method.

maxSize - the maximum height or width of the scaled image

mimeType - the mime type of the image

Returns:

the scaled image stream

Throws:

GalleryException

getScaledInstance

public BufferedImage getScaledInstance(BufferedImage img,
                              int targetWidth,
                              int targetHeight,
                              Object hint,
                              boolean higherQuality)

Convenience method that returns a scaled instance of the provided BufferedImage.

Parameters:

img - the original image to be scaled

targetWidth - the desired width of the scaled instance, in pixels

targetHeight - the desired height of the scaled instance, in pixels

hint - one of the rendering hints that corresponds to RenderingHints.KEY_INTERPOLATION (e.g. RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR, RenderingHints.VALUE_INTERPOLATION_BILINEAR, RenderingHints.VALUE_INTERPOLATION_BICUBIC)

higherQuality - if true, this method will use a multi-step scaling technique that provides higher quality than the usual one-step technique (only useful in downscaling cases, where targetWidth or targetHeight is smaller than the original dimensions, and generally only when the BILINEAR hint is specified)

Returns:

a scaled version of the original BufferedImage

getDesiredResourceDimension

public Dimension getDesiredResourceDimension(javax.jcr.Node node)
                                      throws javax.jcr.RepositoryException

Specified by:

getDesiredResourceDimension in interface GalleryProcessor

Throws:

javax.jcr.RepositoryException

makeImage

public void makeImage(javax.jcr.Node node,
             InputStream istream,
             String mimeType,
             String fileName)
               throws GalleryException,
                      javax.jcr.RepositoryException

Specified by:

makeImage in interface GalleryProcessor

Throws:

GalleryException

javax.jcr.RepositoryException

makeRegularImage

protected void makeRegularImage(javax.jcr.Node node,
                    String name,
                    InputStream istream,
                    String mimeType,
                    Calendar lastModified)
                         throws javax.jcr.RepositoryException

Throws:

javax.jcr.RepositoryException

makeThumbnailImage

protected void makeThumbnailImage(javax.jcr.Node node,
                      InputStream resourceData,
                      String mimeType)
                           throws javax.jcr.RepositoryException,
                                  GalleryException

Throws:

javax.jcr.RepositoryException

GalleryException

validateResource

public void validateResource(javax.jcr.Node node,
                    String fileName)
                      throws GalleryException,
                             javax.jcr.RepositoryException

Specified by:

validateResource in interface GalleryProcessor

Throws:

GalleryException

javax.jcr.RepositoryException

initGalleryResource

public void initGalleryResource(javax.jcr.Node node,
                       InputStream data,
                       String mimeType,
                       String fileName,
                       Calendar lastModified)
                         throws GalleryException,
                                javax.jcr.RepositoryException

Specified by:

initGalleryResource in interface GalleryProcessor

Throws:

GalleryException

javax.jcr.RepositoryException

isUpscalingEnabled

public boolean isUpscalingEnabled(javax.jcr.Node node)
                           throws GalleryException,
                                  javax.jcr.RepositoryException

Specified by:

isUpscalingEnabled in interface GalleryProcessor

Throws:

GalleryException

javax.jcr.RepositoryException