Package org.jfree.chart.encoders
Class EncoderUtil
java.lang.Object
org.jfree.chart.encoders.EncoderUtil
public class EncoderUtil extends Object
A collection of utility methods for encoding images and returning them as a
byte[] or writing them directly to an OutputStream.
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Constructor Summary
Constructors Constructor Description EncoderUtil()
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Method Summary
Modifier and Type Method Description static byte[]
encode(BufferedImage image, String format)
Encode the image in a specific format.static byte[]
encode(BufferedImage image, String format, boolean encodeAlpha)
Encode the image in a specific format.static byte[]
encode(BufferedImage image, String format, float quality)
Encode the image in a specific format.static byte[]
encode(BufferedImage image, String format, float quality, boolean encodeAlpha)
Encode the image in a specific format.static void
writeBufferedImage(BufferedImage image, String format, OutputStream outputStream)
Encode the image in a specific format and write it to an OutputStream.static void
writeBufferedImage(BufferedImage image, String format, OutputStream outputStream, boolean encodeAlpha)
Encode the image in a specific format and write it to an OutputStream.static void
writeBufferedImage(BufferedImage image, String format, OutputStream outputStream, float quality)
Encode the image in a specific format and write it to an OutputStream.static void
writeBufferedImage(BufferedImage image, String format, OutputStream outputStream, float quality, boolean encodeAlpha)
Encode the image in a specific format and write it to an OutputStream.
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Constructor Details
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EncoderUtil
public EncoderUtil()
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Method Details
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encode
Encode the image in a specific format.- Parameters:
image
- The image to be encoded.format
- TheImageFormat
to use.- Returns:
- The byte[] that is the encoded image.
- Throws:
IOException
- if there is an IO problem.
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encode
public static byte[] encode(BufferedImage image, String format, boolean encodeAlpha) throws IOExceptionEncode the image in a specific format.- Parameters:
image
- The image to be encoded.format
- TheImageFormat
to use.encodeAlpha
- Whether to encode alpha transparency (not supported by all ImageEncoders).- Returns:
- The byte[] that is the encoded image.
- Throws:
IOException
- if there is an IO problem.
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encode
Encode the image in a specific format.- Parameters:
image
- The image to be encoded.format
- TheImageFormat
to use.quality
- The quality to use for the image encoding (not supported by all ImageEncoders).- Returns:
- The byte[] that is the encoded image.
- Throws:
IOException
- if there is an IO problem.
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encode
public static byte[] encode(BufferedImage image, String format, float quality, boolean encodeAlpha) throws IOExceptionEncode the image in a specific format.- Parameters:
image
- The image to be encoded.format
- TheImageFormat
to use.quality
- The quality to use for the image encoding (not supported by all ImageEncoders).encodeAlpha
- Whether to encode alpha transparency (not supported by all ImageEncoders).- Returns:
- The byte[] that is the encoded image.
- Throws:
IOException
- if there is an IO problem.
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writeBufferedImage
public static void writeBufferedImage(BufferedImage image, String format, OutputStream outputStream) throws IOExceptionEncode the image in a specific format and write it to an OutputStream.- Parameters:
image
- The image to be encoded.format
- TheImageFormat
to use.outputStream
- The OutputStream to write the encoded image to.- Throws:
IOException
- if there is an IO problem.
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writeBufferedImage
public static void writeBufferedImage(BufferedImage image, String format, OutputStream outputStream, float quality) throws IOExceptionEncode the image in a specific format and write it to an OutputStream.- Parameters:
image
- The image to be encoded.format
- TheImageFormat
to use.outputStream
- The OutputStream to write the encoded image to.quality
- The quality to use for the image encoding (not supported by all ImageEncoders).- Throws:
IOException
- if there is an IO problem.
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writeBufferedImage
public static void writeBufferedImage(BufferedImage image, String format, OutputStream outputStream, boolean encodeAlpha) throws IOExceptionEncode the image in a specific format and write it to an OutputStream.- Parameters:
image
- The image to be encoded.format
- TheImageFormat
to use.outputStream
- The OutputStream to write the encoded image to.encodeAlpha
- Whether to encode alpha transparency (not supported by all ImageEncoders).- Throws:
IOException
- if there is an IO problem.
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writeBufferedImage
public static void writeBufferedImage(BufferedImage image, String format, OutputStream outputStream, float quality, boolean encodeAlpha) throws IOExceptionEncode the image in a specific format and write it to an OutputStream.- Parameters:
image
- The image to be encoded.format
- TheImageFormat
to use.outputStream
- The OutputStream to write the encoded image to.quality
- The quality to use for the image encoding (not supported by all ImageEncoders).encodeAlpha
- Whether to encode alpha transparency (not supported by all ImageEncoders).- Throws:
IOException
- if there is an IO problem.
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