Package com.kheops.util

Class ImageUtil

java.lang.Object

com.kheops.util.ImageUtil

public class ImageUtil
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	ImageUtil.ImageTag

Constructor Summary

Constructors

Constructor	Description
ImageUtil()

Method Summary

Modifier and Type	Method	Description
static BufferedImage	applyImageRotation(ByteArrayInputStream bais)
static BufferedImage	flip(BufferedImage bufImage)
static BufferedImage	getFasterScaledInstance(BufferedImage img, int targetWidth, int targetHeight, Object hint, boolean progressiveBilinear)
static ImageMetadataTag	getImageMetadataTag(String directoryName, int tagType, List<ImageMetadataTag> imageMetadataTags)
static ImageMetadataTag	getImageMetadataTag(String directoryName, String tagName, List<ImageMetadataTag> imageMetadataTags)
static ImageMetadataTag[]	getImageMetadataTags(int tagType, List<ImageMetadataTag> imageMetadataTags)
static ImageMetadataTag[]	getImageMetadataTags(String tagName, List<ImageMetadataTag> imageMetadataTags)
static List<ImageMetadataTag>	getMetadataTags(File file)
static List<ImageMetadataTag>	getMetadataTags(InputStream stream)
static int[]	getResizedDimensions(int originalWidth, int originalHeight, int targetWidth, int targetHeight)	Calculates a cross product from the original dimensions.
static BufferedImage	rotate(BufferedImage bufImage, double degrees)
static BufferedImage	trim(BufferedImage image)

Methods inherited from class java.lang.Object

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

Constructor Details

ImageUtil

public ImageUtil()

Method Details

getMetadataTags

public static List<ImageMetadataTag> getMetadataTags(InputStream stream)
                                              throws Exception

Throws:

Exception

getMetadataTags

public static List<ImageMetadataTag> getMetadataTags(File file)
                                              throws Exception

Throws:

Exception

getImageMetadataTags

public static ImageMetadataTag[] getImageMetadataTags(int tagType,
 List<ImageMetadataTag> imageMetadataTags)

getImageMetadataTag

public static ImageMetadataTag getImageMetadataTag(String directoryName,
 int tagType,
 List<ImageMetadataTag> imageMetadataTags)

getImageMetadataTags

public static ImageMetadataTag[] getImageMetadataTags(String tagName,
 List<ImageMetadataTag> imageMetadataTags)

getImageMetadataTag

public static ImageMetadataTag getImageMetadataTag(String directoryName,
 String tagName,
 List<ImageMetadataTag> imageMetadataTags)

applyImageRotation

public static BufferedImage applyImageRotation(ByteArrayInputStream bais)

rotate

public static BufferedImage rotate(BufferedImage bufImage,
 double degrees)

flip

public static BufferedImage flip(BufferedImage bufImage)

getFasterScaledInstance

public static BufferedImage getFasterScaledInstance(BufferedImage img,
 int targetWidth,
 int targetHeight,
 Object hint,
 boolean progressiveBilinear)

getResizedDimensions

public static int[] getResizedDimensions(int originalWidth,
 int originalHeight,
 int targetWidth,
 int targetHeight)

Calculates a cross product from the original dimensions. Returns proportionally resized dimensions.

Parameters:

originalWidth - The original document's width.

originalHeight - The original document's height.

targetWidth - If bigger than 0, proportionally resize the image to match the width provided (in pixels).

targetHeight - If bigger than 0, proportionally resize the image to match the height provided (in pixels).

Returns:

The proportionally resized image dimensions as an int[2]. The width being stored at index 0. The height being stored at index 1. If both height and width passed as argument are invalid input: '<'= 0, return the original image dimensions.

trim

public static BufferedImage trim(BufferedImage image)