org.jfree.chart.encoders

Interface ImageEncoder

All Known Implementing Classes:

KeypointPNGEncoderAdapter, SunJPEGEncoderAdapter, SunPNGEncoderAdapter

public interface ImageEncoder

Interface for abstracting different types of image encoders.

Method Summary

Modifier and Type	Method and Description
byte[]	encode(BufferedImage bufferedImage) Encodes an image in a particular format.
void	encode(BufferedImage bufferedImage, OutputStream outputStream) Encodes an image in a particular 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 (not supported by all ImageEncoders).
void	setQuality(float quality) Set the quality of the image encoding (not supported by all ImageEncoders).

Method Detail

encode

byte[] encode(BufferedImage bufferedImage)
       throws IOException

Encodes an image in a particular format.

Parameters:

bufferedImage - The image to be encoded.

Returns:

The byte[] that is the encoded image.

Throws:

IOException - if there is an IO problem.

encode

void encode(BufferedImage bufferedImage,
            OutputStream outputStream)
     throws IOException

Encodes an image in a particular format and writes it to an OutputStream.

Parameters:

bufferedImage - The image to be encoded.

outputStream - The OutputStream to write the encoded image to.

Throws:

IOException - if there is an IO problem.

getQuality

float getQuality()

Get the quality of the image encoding.

Returns:

A float representing the quality.

setQuality

void setQuality(float quality)

Set the quality of the image encoding (not supported by all ImageEncoders).

Parameters:

quality - A float representing the quality.

isEncodingAlpha

boolean isEncodingAlpha()

Get whether the encoder should encode alpha transparency.

Returns:

Whether the encoder is encoding alpha transparency.

setEncodingAlpha

void setEncodingAlpha(boolean encodingAlpha)

Set whether the encoder should encode alpha transparency (not supported by all ImageEncoders).

Parameters:

encodingAlpha - Whether the encoder should encode alpha transparency.