org.jfree.chart.encoders

Class ImageEncoderFactory

java.lang.Object

org.jfree.chart.encoders.ImageEncoderFactory

public class ImageEncoderFactory
extends java.lang.Object

Factory class for returning ImageEncoders for different ImageFormats.

Field Summary

Fields

Modifier and Type	Field and Description
private static java.util.Map	encoders Storage for the encoders.

Constructor Summary

Constructors

Constructor and Description
ImageEncoderFactory()

Method Summary

Modifier and Type	Method and Description
private static void	init() Sets up default encoders (uses Sun PNG Encoder if JDK 1.4+ and the SunPNGEncoderAdapter class is available).
static ImageEncoder	newInstance(java.lang.String format) Used to retrieve an ImageEncoder for a specific image format.
static ImageEncoder	newInstance(java.lang.String format, boolean encodingAlpha) Used to retrieve an ImageEncoder for a specific image format.
static ImageEncoder	newInstance(java.lang.String format, float quality) Used to retrieve an ImageEncoder for a specific image format.
static ImageEncoder	newInstance(java.lang.String format, float quality, boolean encodingAlpha) Used to retrieve an ImageEncoder for a specific image format.
static void	setImageEncoder(java.lang.String format, java.lang.String imageEncoderClassName) Used to set additional encoders or replace default ones.

Methods inherited from class java.lang.Object

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

Field Detail

encoders

private static java.util.Map encoders

Storage for the encoders.

Constructor Detail

ImageEncoderFactory

public ImageEncoderFactory()

Method Detail

init

private static void init()

Sets up default encoders (uses Sun PNG Encoder if JDK 1.4+ and the SunPNGEncoderAdapter class is available).

setImageEncoder

public static void setImageEncoder(java.lang.String format,
                                   java.lang.String imageEncoderClassName)

Used to set additional encoders or replace default ones.

Parameters:

format - The image format name.

imageEncoderClassName - The name of the ImageEncoder class.

newInstance

public static ImageEncoder newInstance(java.lang.String format)

Used to retrieve an ImageEncoder for a specific image format.

Parameters:

format - The image format required.

Returns:

The ImageEncoder or null if none available.

newInstance

public static ImageEncoder newInstance(java.lang.String format,
                                       float quality)

Used to retrieve an ImageEncoder for a specific image format.

Parameters:

format - The image format required.

quality - The quality to be set before returning.

Returns:

The ImageEncoder or null if none available.

newInstance

public static ImageEncoder newInstance(java.lang.String format,
                                       boolean encodingAlpha)

Used to retrieve an ImageEncoder for a specific image format.

Parameters:

format - The image format required.

encodingAlpha - Sets whether alpha transparency should be encoded.

Returns:

The ImageEncoder or null if none available.

newInstance

public static ImageEncoder newInstance(java.lang.String format,
                                       float quality,
                                       boolean encodingAlpha)

Used to retrieve an ImageEncoder for a specific image format.

Parameters:

format - The image format required.

quality - The quality to be set before returning.

encodingAlpha - Sets whether alpha transparency should be encoded.

Returns:

The ImageEncoder or null if none available.