Package org.apache.commons.imaging.formats.png

Class PngWriter

java.lang.Object

org.apache.commons.imaging.formats.png.PngWriter

public class PngWriter
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	PngWriter.ImageHeader

Constructor Summary

Constructors

Constructor	Description
PngWriter()

Method Summary

Modifier and Type	Method	Description
private byte[]	deflate(byte[] bytes)
private byte	getBitDepth(PngColorType pngColorType, PngImagingParameters params)
private boolean	isValidISO_8859_1(java.lang.String s)
private void	writeChunk(java.io.OutputStream os, ChunkType chunkType, byte[] data)
private void	writeChunkIDAT(java.io.OutputStream os, byte[] bytes)
private void	writeChunkIEND(java.io.OutputStream os)
private void	writeChunkIHDR(java.io.OutputStream os, PngWriter.ImageHeader value)
private void	writeChunkiTXt(java.io.OutputStream os, AbstractPngText.Itxt text)
private void	writeChunkPHYS(java.io.OutputStream os, int xPPU, int yPPU, byte units)
private void	writeChunkPLTE(java.io.OutputStream os, Palette palette)
private void	writeChunkSCAL(java.io.OutputStream os, double xUPP, double yUPP, byte units)
private void	writeChunktEXt(java.io.OutputStream os, AbstractPngText.Text text)
private void	writeChunkTRNS(java.io.OutputStream os, Palette palette)
private void	writeChunkXmpiTXt(java.io.OutputStream os, java.lang.String xmpXml)
private void	writeChunkzTXt(java.io.OutputStream os, AbstractPngText.Ztxt text)
void	writeImage(java.awt.image.BufferedImage src, java.io.OutputStream os, PngImagingParameters params, PaletteFactory paletteFactory)	Writes an image to an output stream.
private void	writeInt(java.io.OutputStream os, int value)

Methods inherited from class java.lang.Object

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

Constructor Detail

PngWriter

public PngWriter()

Method Detail

deflate

private byte[] deflate(byte[] bytes)
                throws java.io.IOException

Throws:

java.io.IOException

getBitDepth

private byte getBitDepth(PngColorType pngColorType,
                         PngImagingParameters params)

isValidISO_8859_1

private boolean isValidISO_8859_1(java.lang.String s)

writeChunk

private void writeChunk(java.io.OutputStream os,
                        ChunkType chunkType,
                        byte[] data)
                 throws java.io.IOException

Throws:

java.io.IOException

writeChunkIDAT

private void writeChunkIDAT(java.io.OutputStream os,
                            byte[] bytes)
                     throws java.io.IOException

Throws:

java.io.IOException

writeChunkIEND

private void writeChunkIEND(java.io.OutputStream os)
                     throws java.io.IOException

Throws:

java.io.IOException

writeChunkIHDR

private void writeChunkIHDR(java.io.OutputStream os,
                            PngWriter.ImageHeader value)
                     throws java.io.IOException

Throws:

java.io.IOException

writeChunkiTXt

private void writeChunkiTXt(java.io.OutputStream os,
                            AbstractPngText.Itxt text)
                     throws java.io.IOException,
                            ImagingException

Throws:

java.io.IOException

ImagingException

writeChunkPHYS

private void writeChunkPHYS(java.io.OutputStream os,
                            int xPPU,
                            int yPPU,
                            byte units)
                     throws java.io.IOException

Throws:

java.io.IOException

writeChunkPLTE

private void writeChunkPLTE(java.io.OutputStream os,
                            Palette palette)
                     throws java.io.IOException

Throws:

java.io.IOException

writeChunkSCAL

private void writeChunkSCAL(java.io.OutputStream os,
                            double xUPP,
                            double yUPP,
                            byte units)
                     throws java.io.IOException

Throws:

java.io.IOException

writeChunktEXt

private void writeChunktEXt(java.io.OutputStream os,
                            AbstractPngText.Text text)
                     throws java.io.IOException,
                            ImagingException

Throws:

java.io.IOException

ImagingException

writeChunkTRNS

private void writeChunkTRNS(java.io.OutputStream os,
                            Palette palette)
                     throws java.io.IOException

Throws:

java.io.IOException

writeChunkXmpiTXt

private void writeChunkXmpiTXt(java.io.OutputStream os,
                               java.lang.String xmpXml)
                        throws java.io.IOException

Throws:

java.io.IOException

writeChunkzTXt

private void writeChunkzTXt(java.io.OutputStream os,
                            AbstractPngText.Ztxt text)
                     throws java.io.IOException,
                            ImagingException

Throws:

java.io.IOException

ImagingException

writeImage

public void writeImage(java.awt.image.BufferedImage src,
                       java.io.OutputStream os,
                       PngImagingParameters params,
                       PaletteFactory paletteFactory)
                throws ImagingException,
                       java.io.IOException

Writes an image to an output stream.

Parameters:

src - The image to write.

os - The output stream to write to.

params - The parameters to use (can be NULL to use the default PngImagingParameters).

paletteFactory - The palette factory to use (can be NULL to use the default PaletteFactory).

Throws:

ImagingException - When errors are detected.

java.io.IOException - When IO problems occur.

writeInt

private void writeInt(java.io.OutputStream os,
                      int value)
               throws java.io.IOException

Throws:

java.io.IOException