Package org.cesilko.rachota.gui

Class PNGImageWriter

  • public class PNGImageWriter
extends java.lang.Object
    Encoder for writing BufferedImage as true color PNG image with maximum compression.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      (package private) java.util.zip.CRC32 checksum
      Checksum computer.
      (package private) java.io.OutputStream outputStream
      Output stream representing file where image should be saved.

    • Constructor Summary

      Constructors 
      Constructor Description
      PNGImageWriter()  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      (package private) void write​(byte[] array)
      Writes given byte array to output stream and updates checksum.
      (package private) void write​(int number)
      Transforms given number to byte array and writes it.
      void write​(java.awt.image.BufferedImage image, java.io.OutputStream outputStream)
      Writes given buffered image to given output stream.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • checksum

        java.util.zip.CRC32 checksum
        Checksum computer.

      • outputStream

        java.io.OutputStream outputStream
        Output stream representing file where image should be saved.

    • Constructor Detail

      • PNGImageWriter

        public PNGImageWriter()

    • Method Detail

      • write

        void write​(int number)
    throws java.io.IOException
        Transforms given number to byte array and writes it.
        Parameters:
        number - Number to be transformed and written.
        Throws:
        java.io.IOException - Exception thrown when any I/O problem occurs.

      • write

        void write​(byte[] array)
    throws java.io.IOException
        Writes given byte array to output stream and updates checksum.
        Parameters:
        array - Byte array to be written.
        Throws:
        java.io.IOException - Exception thrown when any I/O problem occurs.

      • write

        public void write​(java.awt.image.BufferedImage image,
                  java.io.OutputStream outputStream)
           throws java.io.IOException
        Writes given buffered image to given output stream.
        Parameters:
        image - Buffered image to be written.
        outputStream - Output stream representing file where image should be saved.
        Throws:
        java.io.IOException - Exception thrown when any I/O problem occurs.