Package com.logicaldoc.core.imaging

Class ImageUtil

java.lang.Object

com.logicaldoc.core.imaging.ImageUtil

public class ImageUtil
extends Object

Utility methods for handling images

Since:

8.5.3

Author:

Marco Meschieri - LogicalDOC

Constructor Summary

Constructors

Constructor	Description
ImageUtil()

Method Summary

Modifier and Type	Method	Description
static BufferedImage	cropCenterSquare(BufferedImage originalImage, int squareSize)	Crops a square at the center of the given image
static BufferedImage	cropImage(BufferedImage originalImage, ImageZone zone)	Crops an area from given image
static void	cropImageToFile(String content, ImageZone zone, File file)	Crops an area and stores it in a given .jpg file
static String	encodeImage(File image)	Encodes in Base64 the given image file
static void	pasteImage(BufferedImage container, BufferedImage imageIn, float opaque, int x, int y)	Prints the contents of imageIn on container the given opaque value
static void	printFirstPage(File originalFile, String originalFileName, File out)	Prints the first page of the given file into the output as .jpg image
static void	saveImage(String content, File file)	Saves an image into a given file in an image format

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageUtil

public ImageUtil()

Method Detail

saveImage

public static void saveImage(String content,
                             File file)
                      throws IOException

Saves an image into a given file in an image format

Parameters:

content - the content of the image Base64 encoded

file - the output file

Throws:

IOException - in case of I/O error

cropImageToFile

public static void cropImageToFile(String content,
                                   ImageZone zone,
                                   File file)
                            throws IOException

Crops an area and stores it in a given .jpg file

Parameters:

content - the content of the source image Base64 encoded

zone - the zone definition

file - the output file

Throws:

IOException - an I/O error

cropImage

public static BufferedImage cropImage(BufferedImage originalImage,
                                      ImageZone zone)

Crops an area from given image

Parameters:

originalImage - the original image

zone - the zone definition

Returns:

the cropped image

cropCenterSquare

public static BufferedImage cropCenterSquare(BufferedImage originalImage,
                                             int squareSize)

Crops a square at the center of the given image

Parameters:

originalImage - the original image

squareSize - size of the square

Returns:

the cropped square

pasteImage

public static void pasteImage(BufferedImage container,
                              BufferedImage imageIn,
                              float opaque,
                              int x,
                              int y)

Prints the contents of imageIn on container the given opaque value

Parameters:

container - the bigger image

imageIn - the image to print in

opaque - and indication of how opaque must be the print

x - left coordinate

y - top coordinate

encodeImage

public static String encodeImage(File image)
                          throws FileNotFoundException,
                                 IOException

Encodes in Base64 the given image file

Parameters:

image - the image to encode

Returns:

the encoded image

Throws:

IOException - error in the elaboration of the image

FileNotFoundException - error accessing the file

printFirstPage

public static void printFirstPage(File originalFile,
                                  String originalFileName,
                                  File out)
                           throws IOException

Prints the first page of the given file into the output as .jpg image

Parameters:

originalFile - the original file

originalFileName - the original filename

out - the output .jpg file

Throws:

IOException - a generic I/O error