org.apache.clerezza.utils.imageprocessing

Class ImageProcessor

java.lang.Object

org.apache.clerezza.utils.imageprocessing.ImageProcessor

Direct Known Subclasses:

JavaGraphicsProvider

public abstract class ImageProcessor
extends Object

Provides methods to manipulate image data via java.awt.image.BufferedImage. BufferedImage is an accessible buffer of image data (pixels and their RGB colors).

Author:

tio, hasan, mir

Constructor Summary

Constructors

Constructor and Description
ImageProcessor()

Method Summary

Methods

Modifier and Type	Method and Description
abstract BufferedImage	flip(BufferedImage image, int direction) Flips an image
BufferedImage	makeAThumbnail(BufferedImage image, int width, int height) Create a thumbnail of the image.
abstract BufferedImage	makeColorTransparent(BufferedImage image, Color color) Makes a Color of an image transparent
abstract BufferedImage	makeImageTranslucent(BufferedImage image, float translucency) Makes an image translucent.
abstract BufferedImage	resize(BufferedImage image, int newWidth, int newHeight) Resizes an image
abstract BufferedImage	resizeProportional(BufferedImage image, int newWidth, int newHeight) Resizes an image proportionally.
abstract BufferedImage	resizeRelative(BufferedImage image, float resizeFactorWidth, float resizeFactorHeight) Resizes an image relatively to the original size.
abstract BufferedImage	resizeRelativeProportional(BufferedImage image, float resizeFactor) Resizes an image proportionally and relative to the original size.
abstract BufferedImage	rotate(BufferedImage image, int angle) Rotates an image by an angle defined in degrees.

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageProcessor

public ImageProcessor()

Method Detail

makeImageTranslucent

public abstract BufferedImage makeImageTranslucent(BufferedImage image,
                                 float translucency)

Makes an image translucent. The parameter translucency has to be in the range 0.0 - 1.0

Parameters:

image -

translucency -

makeColorTransparent

public abstract BufferedImage makeColorTransparent(BufferedImage image,
                                 Color color)

Makes a Color of an image transparent

Parameters:

image -

color -

flip

public abstract BufferedImage flip(BufferedImage image,
                 int direction)

Flips an image

Parameters:

image -

direction - 0 means horizontal 1 means vertical

rotate

public abstract BufferedImage rotate(BufferedImage image,
                   int angle)

Rotates an image by an angle defined in degrees. If the angle is negative, the image will be rotated counter-clockwise. Otherwise, it will be rotated clockwise.

Parameters:

image -

angle -

resize

public abstract BufferedImage resize(BufferedImage image,
                   int newWidth,
                   int newHeight)

Resizes an image

Parameters:

image -

newWidth -

newHeight -

resizeProportional

public abstract BufferedImage resizeProportional(BufferedImage image,
                               int newWidth,
                               int newHeight)

Resizes an image proportionally. The proportion is determined by the newWidth if it is not 0, irrespective of the newHeight. If the newWidth is 0, the proportion is determined by the newHeight if it is not 0. If both newWidth and newHeight are 0, no resize takes place.

Parameters:

image -

newWidth -

newHeight -

resizeRelative

public abstract BufferedImage resizeRelative(BufferedImage image,
                           float resizeFactorWidth,
                           float resizeFactorHeight)

Resizes an image relatively to the original size. Resize factors take the value in the range [0.0 .. 1.0]

Parameters:

image -

resizeFactorWidth -

resizeFactorHeight -

resizeRelativeProportional

public abstract BufferedImage resizeRelativeProportional(BufferedImage image,
                                       float resizeFactor)

Resizes an image proportionally and relative to the original size. Resize factor takes the value in the range [0.0 .. 1.0]

Parameters:

image -

resizeFactor -

makeAThumbnail

public BufferedImage makeAThumbnail(BufferedImage image,
                           int width,
                           int height)

Create a thumbnail of the image. The image is scaled down so that height and width are smaller or equals to height and width respectively. If image is already smaller or equals width x height image is returned without transformation.

Parameters:

image - The image from which the thumbnails is derived.

width - The maximum width of the thumbnail

height - The maximum height of the thumbnail