com.jaxfront.core.util
Class ImageHelper

java.lang.Object
  com.jaxfront.core.util.ImageHelper

public class ImageHelper
extends java.lang.Object

Field Summary

static byte[]	IMAGE_EMPTY
static byte[]	IMAGE_NOT_FOUND_DEF
static javax.swing.ImageIcon	imageEmpty
static javax.swing.ImageIcon	imageNotFound
static byte[]	NULL_IMAGE_DEF

Constructor Summary

ImageHelper()

Method Summary

static byte[]	createByteArray(javax.swing.ImageIcon i, java.lang.String type)
static byte[]	createByteArray(java.awt.Image image, java.lang.String type)
static java.lang.String	getHTMLSpacerImageTag(Document dom)
java.awt.Image	getImage(java.lang.String imageName)
static byte[]	getImageEmpty()
javax.swing.ImageIcon	getImageIcon(java.lang.String imageName) Return the image with the specified image name.
javax.swing.ImageIcon	getImageIcon(java.net.URL baseURL, java.lang.String imageName) Return the image with the specified image name.
ResourceWrapper	getImageIconWrapper(java.net.URL baseURL, java.lang.String imageName, boolean createNullImage) Return the image with the specified image name.
static byte[]	getImageNotFound()
java.util.Hashtable	getImages()
static java.net.URL	getImageUrl(java.lang.String imageName)
java.util.Enumeration	getImageWrappers()
static ImageHelper	getInstance()
int	getLoadedImages()
int	getLoadedImagesSize()
static java.awt.Image	getScaledImage(java.awt.Component imageHolder, java.awt.Image image, int newWidth, int newHeight)
void	putImage(java.lang.String key, byte[] value, boolean internalized)
void	releaseImageCache()
void	releaseImageCache(java.lang.String startsWith)
void	releaseInternalizedImages()
void	removeImage(java.lang.String key)

Methods inherited from class java.lang.Object

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

Field Detail

IMAGE_EMPTY

public static final byte[] IMAGE_EMPTY

IMAGE_NOT_FOUND_DEF

public static final byte[] IMAGE_NOT_FOUND_DEF

imageEmpty

public static javax.swing.ImageIcon imageEmpty

imageNotFound

public static javax.swing.ImageIcon imageNotFound

NULL_IMAGE_DEF

public static final byte[] NULL_IMAGE_DEF

Constructor Detail

ImageHelper

public ImageHelper()

Method Detail

createByteArray

public static byte[] createByteArray(javax.swing.ImageIcon i,
                                     java.lang.String type)

createByteArray

public static byte[] createByteArray(java.awt.Image image,
                                     java.lang.String type)

getHTMLSpacerImageTag

public static java.lang.String getHTMLSpacerImageTag(Document dom)

getImage

public java.awt.Image getImage(java.lang.String imageName)

getImageEmpty

public static byte[] getImageEmpty()

getImageIcon

public javax.swing.ImageIcon getImageIcon(java.lang.String imageName)

Return the image with the specified image name. Note that the image should be in the class path.

Parameters:

imageName - the name of the image

Returns:

an image with the specified name

getImageIcon

public javax.swing.ImageIcon getImageIcon(java.net.URL baseURL,
                                          java.lang.String imageName)

Return the image with the specified image name. Note that the image should be in the class path.

Parameters:

imageName - the name of the image

Returns:

an image with the specified name

getImageIconWrapper

public ResourceWrapper getImageIconWrapper(java.net.URL baseURL,
                                           java.lang.String imageName,
                                           boolean createNullImage)

Return the image with the specified image name. Note that the image should be in the class path.

Parameters:

imageName - the name of the image

Returns:

an image with the specified name

getImageNotFound

public static byte[] getImageNotFound()

getImages

public java.util.Hashtable getImages()

getImageUrl

public static java.net.URL getImageUrl(java.lang.String imageName)

getImageWrappers

public java.util.Enumeration getImageWrappers()

getInstance

public static ImageHelper getInstance()

getLoadedImages

public int getLoadedImages()

getLoadedImagesSize

public int getLoadedImagesSize()

getScaledImage

public static java.awt.Image getScaledImage(java.awt.Component imageHolder,
                                            java.awt.Image image,
                                            int newWidth,
                                            int newHeight)

putImage

public void putImage(java.lang.String key,
                     byte[] value,
                     boolean internalized)

releaseImageCache

public void releaseImageCache()

releaseImageCache

public void releaseImageCache(java.lang.String startsWith)

releaseInternalizedImages

public void releaseInternalizedImages()

removeImage

public void removeImage(java.lang.String key)