Package org.jfree.chart.encoders

Class 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.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method 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

    • 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.