Module org.mbari.jcommons

Package org.mbari.jcommons.awt

Class ImageUtil

java.lang.Object

org.mbari.jcommons.awt.ImageUtil

public class ImageUtil
extends Object

Method Summary

Modifier and Type	Method	Description
static BufferedImage	addWatermark(BufferedImage bufferedImage, String watermark, Color color, Font font, float alpha)	Adds text as a watermark to an image as 50% transparent of the supplied color.
static boolean	hasAlpha(Image image)	This method returns true if the specified image has transparent pixels.
static void	saveImage(RenderedImage image, File target)	Saves the image to the target file.
static BufferedImage	toBufferedImage(Image image)	This method returns a buffered image with the contents of an image.
static BufferedImage	toBufferedImage(RenderedImage image)	Converts a RenderedImage into a BufferedImage.
static Image	toImage(BufferedImage bufferedImage)	This method returns an Image object from a buffered image.

Methods inherited from class java.lang.Object

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

Method Details

addWatermark

public static BufferedImage addWatermark(BufferedImage bufferedImage,
 String watermark,
 Color color,
 Font font,
 float alpha)

Adds text as a watermark to an image as 50% transparent of the supplied color.

Parameters:

bufferedImage - The image to add the watermark to

watermark - The text to add as a watermark

color - The color of the watermarked text [default = white]

font - The font to use for the watermark [default = Arial Bold 30pt.]

alpha -

Returns:

The bufferedImage that was passed in (of course it now has the watermark). This was added to allow method chaining.

hasAlpha

public static boolean hasAlpha(Image image)

This method returns true if the specified image has transparent pixels. This code is from The Java Developers Almanac 1.4

Parameters:

image -

Returns:

saveImage

public static void saveImage(RenderedImage image,
 File target)
                      throws IOException

Saves the image to the target file. The format of the saved file is determined by it's extension

Parameters:

image - The image to save

target - The file to save the image to.

Throws:

IOException

toBufferedImage

public static BufferedImage toBufferedImage(RenderedImage image)

Converts a RenderedImage into a BufferedImage. If the RenderedImage is already a BufferedImage then the input argument is returned (i.e. no operations are performed on the image). Found this at http://www.mambo.net/cgi-bin/TempProcessor/view/77

Parameters:

image - The RenderedImage to convert

Returns:

The input converted to a BufferedImage

toBufferedImage

public static BufferedImage toBufferedImage(Image image)

This method returns a buffered image with the contents of an image. This code is from The Java Developers Almanac 1.4

Parameters:

image - The Image to convert to a BufferedImage

Returns:

toImage

public static Image toImage(BufferedImage bufferedImage)

This method returns an Image object from a buffered image. This code is from The Java Developers Almanac 1.4

Parameters:

bufferedImage -

Returns: