ur_rna.Utilities.swing

Class ImageUtil

java.lang.Object

ur_rna.Utilities.swing.ImageUtil

public class ImageUtil
extends java.lang.Object

Image Utilities

Constructor Summary

Constructors

Constructor and Description
ImageUtil()

Method Summary

Modifier and Type	Method and Description
static java.awt.image.BufferedImage	createCompatibleImage(int width, int height, boolean supportTransparency) Returns a BufferedImage that supports the specified transparency and has a data layout and color model compatible with this GraphicsConfiguration.
static java.awt.image.BufferedImage	getAlphaImage(java.awt.image.BufferedImage image)
static boolean	hasAlpha(java.awt.Image image) This method returns true if the specified image has the possibility to store transparent pixels.
static java.awt.image.BufferedImage	toBufferedImage(java.awt.Image image) This method returns a buffered image with the contents of an image.
static java.awt.image.BufferedImage	toBufferedImage(java.awt.Image image, boolean forceCopy) This method returns a buffered image with the contents of an image.
static java.awt.image.BufferedImage	toBufferedImage(java.awt.image.RenderedImage image) Converts an arbitrary image to a BufferedImage.
static boolean	usesAlpha(java.awt.Image image) This method returns true if the specified image has at least one pixel that is not fully opaque.

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageUtil

public ImageUtil()

Method Detail

createCompatibleImage

public static java.awt.image.BufferedImage createCompatibleImage(int width,
                                                                 int height,
                                                                 boolean supportTransparency)

Returns a BufferedImage that supports the specified transparency and has a data layout and color model compatible with this GraphicsConfiguration. The returned BufferedImage has a layout and color model that can be optimally blitted to a device with this GraphicsConfiguration.

getAlphaImage

public static java.awt.image.BufferedImage getAlphaImage(java.awt.image.BufferedImage image)

hasAlpha

public static boolean hasAlpha(java.awt.Image image)

This method returns true if the specified image has the possibility to store transparent pixels. Inspired by http://www.exampledepot.com/egs/java.awt.image/HasAlpha.html

Parameters:

image - Image that should be checked for alpha channel.

Returns:

true if the specified image can have transparent pixels, false otherwise

toBufferedImage

public static java.awt.image.BufferedImage toBufferedImage(java.awt.Image image)

This method returns a buffered image with the contents of an image. If the source image is already a BufferedImage, it will be returned as-is.

Parameters:

image - Image to be converted

Returns:

a buffered image with the contents of the specified image

toBufferedImage

public static java.awt.image.BufferedImage toBufferedImage(java.awt.Image image,
                                                           boolean forceCopy)

This method returns a buffered image with the contents of an image.

Parameters:

image - Image to be converted

forceCopy - This parameter has no effect unless the source image is a BufferedImage. If false the source image will be returned as-is, since it is already a BufferedImage. If true, a new BufferedImage (which is compatible with the screen) will be created even if the source image is already a buffered image.

Returns:

a buffered image with the contents of the specified image

toBufferedImage

public static java.awt.image.BufferedImage toBufferedImage(java.awt.image.RenderedImage image)

Converts an arbitrary image to a BufferedImage.

Parameters:

image - Image that should be converted.

Returns:

a buffered image containing the image pixels, or the original instance if the image already was of type BufferedImage.

usesAlpha

public static boolean usesAlpha(java.awt.Image image)

This method returns true if the specified image has at least one pixel that is not fully opaque.

Parameters:

image - Image that should be checked for non-opaque pixels.

Returns:

true if the specified image has transparent pixels, false otherwise