org.richfaces.photoalbum.util

Class FileManipulation

java.lang.Object

org.richfaces.photoalbum.util.FileManipulation

public class FileManipulation
extends Object

Utility class for operations with file-system

Constructor Summary

Constructors

Constructor and Description
FileManipulation()

Method Summary

Methods

Modifier and Type	Method and Description
static void	addDirectory(File directory) Utility method for creation of directory
static BufferedImage	bitmapToImage(InputStream is, String format) Utility method to read image from disk and transform image to BufferedImage object
static void	copyDirectory(File srcDir, File dstDir) Utility method for copying directory
static void	copyFile(File srcFile, File destFile) Utility method for copying file
static boolean	deleteDirectory(File dir, boolean isInitialDelete) Utility method for delete directory
static void	deleteFile(File file) Utility method for delete file
static BufferedImage	getScaledInstance(BufferedImage img, int targetWidth, int targetHeight, Object hint, boolean higherQuality) Convenience method that returns a scaled instance of the provided BufferedImage.
static void	imageToBitmap(BufferedImage image, String data, String format) Utility method to write BufferedImage object to disk
static String	joinFiles(String... files) Utility method for concatenation names of collection of files

Methods inherited from class java.lang.Object

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

Constructor Detail

FileManipulation

public FileManipulation()

Method Detail

copyFile

public static void copyFile(File srcFile,
            File destFile)
                     throws IOException

Utility method for copying file

Parameters:

srcFile - - source file

destFile - - destination file

Throws:

IOException

copyDirectory

public static void copyDirectory(File srcDir,
                 File dstDir)
                          throws IOException

Utility method for copying directory

Parameters:

srcDir - - source directory

dstDir - - destination directory

Throws:

IOException

deleteDirectory

public static boolean deleteDirectory(File dir,
                      boolean isInitialDelete)

Utility method for delete directory

Parameters:

dir - - directory to delete

isInitialDelete - - determine if the deleting process running at startup or on destroy of application

Returns:

true if directory succesfully deleted

joinFiles

public static String joinFiles(String... files)

Utility method for concatenation names of collection of files

Parameters:

files - - array of strings to concatenate

Returns:

concatenated string

deleteFile

public static void deleteFile(File file)

Utility method for delete file

Parameters:

file - - file to delete

bitmapToImage

public static BufferedImage bitmapToImage(InputStream is,
                          String format)
                                   throws IOException

Utility method to read image from disk and transform image to BufferedImage object

Parameters:

data - - relative path to the image

format - - file prefix of the image

Returns:

BufferedImage representation of the image

Throws:

IOException

imageToBitmap

public static void imageToBitmap(BufferedImage image,
                 String data,
                 String format)
                          throws IOException

Utility method to write BufferedImage object to disk

Parameters:

image - - BufferedImage object to save.

data - - relative path to the image

format - - file prefix of the image

Throws:

IOException

getScaledInstance

public static 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

addDirectory

public static void addDirectory(File directory)

Utility method for creation of directory

Parameters:

directory - - directory to create