com.nurelm.util
Class ImageUtil

java.lang.Object
  com.nurelm.util.ImageUtil

public class ImageUtil

extends java.lang.Object

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Field Summary

static java.lang.String	IMAGE_REDUCTION_ERROR DOCUMENT ME!
static float	NO_MAX_H_SET DOCUMENT ME!
static float	NO_MAX_W_SET DOCUMENT ME!

Constructor Summary

ImageUtil()

Method Summary

static java.lang.String	convertFileNameToResizedJpeg(java.lang.String pathFileName) Changes the file extension to "jpg" and returns the new string.
static boolean	isFileJpegOrGif(java.lang.String filename) DOCUMENT ME!
static java.lang.String	reduceAndDeleteOldIfNeeded(java.lang.String originalImagePathFileName, java.lang.String newMaxHeight, java.lang.String newMaxWidth) If the passed in dimensions are smaller than the image, the image is reduced in size.
static java.lang.String	reduceIfNeeded(java.lang.String originalImagePathFileName, float newMaxHeight, float newMaxWidth)
static void	resize(java.lang.String originalImageFileName, java.lang.String newImageFilename, float newMaxHeight, float newMaxWidth) Resizes the originalImageFileName to the same proportions, but maximum dimensions of newMaxHeight X newMaxWidth (in pixels).

Methods inherited from class java.lang.Object

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

Field Detail

NO_MAX_H_SET

public static final float NO_MAX_H_SET

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See Also:

Constant Field Values

NO_MAX_W_SET

public static final float NO_MAX_W_SET

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See Also:

Constant Field Values

IMAGE_REDUCTION_ERROR

public static final java.lang.String IMAGE_REDUCTION_ERROR

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See Also:

Constant Field Values

Constructor Detail

ImageUtil

public ImageUtil()

Method Detail

reduceIfNeeded

public static java.lang.String reduceIfNeeded(java.lang.String originalImagePathFileName,
                                              float newMaxHeight,
                                              float newMaxWidth)
                                       throws NuPlatformException,
                                              NuFileException

Throws:

NuPlatformException

NuFileException

reduceAndDeleteOldIfNeeded

public static java.lang.String reduceAndDeleteOldIfNeeded(java.lang.String originalImagePathFileName,
                                                          java.lang.String newMaxHeight,
                                                          java.lang.String newMaxWidth)
                                                   throws NuPlatformException,
                                                          java.lang.NumberFormatException,
                                                          NuFileException

If the passed in dimensions are smaller than the image, the image is reduced in size. The new fileName (w/o path prepended to it) for the image is returned. The original file is deleted.

Parameters:

originalImagePathFileName - DOCUMENT ME!

newMaxHeight - DOCUMENT ME!

newMaxWidth - DOCUMENT ME!

Returns:

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Throws:

NuPlatformException - DOCUMENT ME!

java.lang.NumberFormatException - DOCUMENT ME!

NuFileException - DOCUMENT ME!

resize

public static void resize(java.lang.String originalImageFileName,
                          java.lang.String newImageFilename,
                          float newMaxHeight,
                          float newMaxWidth)
                   throws NuPlatformException

Resizes the originalImageFileName to the same proportions, but maximum dimensions of newMaxHeight X newMaxWidth (in pixels). New image is saved to a file specified by newImageFilename. Most image types are accepted (all those that JAI can handle.) All images, regardless of type, are saved as JPEG.

Parameters:

originalImageFileName - DOCUMENT ME!

newImageFilename - DOCUMENT ME!

newMaxHeight - DOCUMENT ME!

newMaxWidth - DOCUMENT ME!

Throws:

NuPlatformException - DOCUMENT ME!

isFileJpegOrGif

public static boolean isFileJpegOrGif(java.lang.String filename)

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Parameters:

filename - DOCUMENT ME!

Returns:

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convertFileNameToResizedJpeg

public static java.lang.String convertFileNameToResizedJpeg(java.lang.String pathFileName)
                                                     throws NuPlatformException,
                                                            NuFileException

Changes the file extension to "jpg" and returns the new string. If the file does not have an extension, then null is returned. Verifies that the new file name is unique. Example: joe.jpg -> joe_resized.jgg joe.jpg (if joe_resized.jpg exists) -> joe_resized_copy1.jpg

Parameters:

pathFileName - pathFileName Must be absolute!

Returns:

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Throws:

NuPlatformException - DOCUMENT ME!

NuFileException - DOCUMENT ME!