org.autoplot.pngwalk

Class ImageResize

java.lang.Object

org.autoplot.pngwalk.ImageResize

public class ImageResize
extends java.lang.Object

first from http://today.java.net/pub/a/today/2007/04/03/perils-of-image-getscaledinstance.html resize taken from http://www.componenthouse.com/article-20

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.logging.Logger	logger

Constructor Summary

Constructors

Constructor and Description
ImageResize()

Method Summary

Modifier and Type	Method and Description
static java.awt.image.BufferedImage	getScaledInstance(java.awt.image.BufferedImage img, int thumbSize) convenient typical use.
static java.awt.image.BufferedImage	getScaledInstance(java.awt.image.BufferedImage img, int targetWidth, int targetHeight, java.lang.Object hint, boolean higherQuality) Convenience method that returns a scaled instance of the provided BufferedImage.

Methods inherited from class java.lang.Object

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

Field Detail

logger

public static final java.util.logging.Logger logger

Constructor Detail

ImageResize

public ImageResize()

Method Detail

getScaledInstance

public static java.awt.image.BufferedImage getScaledInstance(java.awt.image.BufferedImage img,
                                                             int thumbSize)

convenient typical use.

Parameters:

img - image to resize.

thumbSize - corner-to-corner size, preserving aspect ratio.

Returns:

buffered image that is thumbSize across.

getScaledInstance

public static java.awt.image.BufferedImage getScaledInstance(java.awt.image.BufferedImage img,
                                                             int targetWidth,
                                                             int targetHeight,
                                                             java.lang.Object hint,
                                                             boolean higherQuality)

Convenience method that returns a scaled instance of the provided BufferedImage.

Parameters:

img - the original image to be scaled

targetWidth - the desired width of the scaled instance, in pixels

targetHeight - the desired height of the scaled instance, in pixels

hint - one of the rendering hints that corresponds to RenderingHints.KEY_INTERPOLATION (e.g. RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR, RenderingHints.VALUE_INTERPOLATION_BILINEAR, RenderingHints.VALUE_INTERPOLATION_BICUBIC)

higherQuality - if true, this method will use a multi-step scaling technique that provides higher quality than the usual one-step technique (only useful in downscaling cases, where targetWidth or targetHeight is smaller than the original dimensions, and generally only when the BILINEAR hint is specified)

Returns:

a scaled version of the original BufferedImage