org.jfree.chart.encoders

Class KeypointPNGEncoderAdapter

java.lang.Object

org.jfree.chart.encoders.KeypointPNGEncoderAdapter

All Implemented Interfaces:

ImageEncoder

public class KeypointPNGEncoderAdapter
extends java.lang.Object
implements ImageEncoder

Adapter class for the Keypoint PNG Encoder. The ImageEncoderFactory will only return a reference to this class by default if the library has been compiled under a JDK < 1.4 or is being run using a JDK < 1.4.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	encodingAlpha Encode alpha?
private int	quality The quality setting.

Constructor Summary

Constructors

Constructor and Description
KeypointPNGEncoderAdapter()

Method Summary

Modifier and Type	Method and Description
byte[]	encode(java.awt.image.BufferedImage bufferedImage) Encodes an image in PNG format.
void	encode(java.awt.image.BufferedImage bufferedImage, java.io.OutputStream outputStream) Encodes an image in PNG format and writes it to an OutputStream.
float	getQuality() Get the quality of the image encoding.
boolean	isEncodingAlpha() Get whether the encoder should encode alpha transparency.
void	setEncodingAlpha(boolean encodingAlpha) Set whether the encoder should encode alpha transparency (supported).
void	setQuality(float quality) Set the quality of the image encoding (supported).

Methods inherited from class java.lang.Object

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

Field Detail

quality

private int quality

The quality setting.

encodingAlpha

private boolean encodingAlpha

Encode alpha?

Constructor Detail

KeypointPNGEncoderAdapter

public KeypointPNGEncoderAdapter()

Method Detail

getQuality

public float getQuality()

Get the quality of the image encoding. The underlying encoder uses int values: 0 for no compression, and values 1 through 9 for various levels of compression (1 is best speed, 9 is best compression).

Specified by:

getQuality in interface ImageEncoder

Returns:

A float representing the quality.

setQuality

public void setQuality(float quality)

Set the quality of the image encoding (supported). The underlying encoder uses int values: 0 for no compression, and values 1 through 9 for various levels of compression (1 is best speed, 9 is best compression).

Specified by:

setQuality in interface ImageEncoder

Parameters:

quality - A float representing the quality.

isEncodingAlpha

public boolean isEncodingAlpha()

Get whether the encoder should encode alpha transparency.

Specified by:

isEncodingAlpha in interface ImageEncoder

Returns:

Whether the encoder is encoding alpha transparency.

setEncodingAlpha

public void setEncodingAlpha(boolean encodingAlpha)

Set whether the encoder should encode alpha transparency (supported).

Specified by:

setEncodingAlpha in interface ImageEncoder

Parameters:

encodingAlpha - Whether the encoder should encode alpha transparency.

encode

public byte[] encode(java.awt.image.BufferedImage bufferedImage)
              throws java.io.IOException

Encodes an image in PNG format.

Specified by:

encode in interface ImageEncoder

Parameters:

bufferedImage - The image to be encoded.

Returns:

The byte[] that is the encoded image.

Throws:

java.io.IOException - if there is an IO problem.

encode

public void encode(java.awt.image.BufferedImage bufferedImage,
                   java.io.OutputStream outputStream)
            throws java.io.IOException

Encodes an image in PNG format and writes it to an OutputStream.

Specified by:

encode in interface ImageEncoder

Parameters:

bufferedImage - The image to be encoded.

outputStream - The OutputStream to write the encoded image to.

Throws:

java.io.IOException - if there is an IO problem.