ar.com.hjg.pngj.chunks
Class PngChunkTRNS

java.lang.Object
  extended by ar.com.hjg.pngj.chunks.PngChunk
      extended by ar.com.hjg.pngj.chunks.PngChunkSingle
          extended by ar.com.hjg.pngj.chunks.PngChunkTRNS

public class PngChunkTRNS
extends PngChunkSingle

tRNS chunk.

see http://www.w3.org/TR/PNG/#11tRNS

this chunk structure depends on the image type


Nested Class Summary
 
Nested classes/interfaces inherited from class ar.com.hjg.pngj.chunks.PngChunk
PngChunk.ChunkOrderingConstraint
 
Field Summary
static java.lang.String ID
           
 
Fields inherited from class ar.com.hjg.pngj.chunks.PngChunk
crit, id, pub, safe
 
Constructor Summary
PngChunkTRNS(ImageInfo info)
           
 
Method Summary
 void cloneDataFromRead(PngChunk other)
          Makes a copy of the chunk.
 ChunkRaw createRawChunk()
          Creates the physical chunk.
 int getGray()
           
 PngChunk.ChunkOrderingConstraint getOrderingConstraint()
          see PngChunk.ChunkOrderingConstraint
 int[] getPalletteAlpha()
          WARNING: non deep copy
 int[] getRGB()
           
 void parseFromRaw(ChunkRaw c)
          Parses raw chunk and fill inside data.
 void setGray(int g)
           
 void setIndexEntryAsTransparent(int palAlphaIndex)
          to use when only one pallete index is set as totally transparent
 void setPalletteAlpha(int[] palAlpha)
          WARNING: non deep copy
 void setRGB(int r, int g, int b)
          Set rgb values
 
Methods inherited from class ar.com.hjg.pngj.chunks.PngChunkSingle
allowsMultiple, equals, hashCode
 
Methods inherited from class ar.com.hjg.pngj.chunks.PngChunk
cloneChunk, factory, factoryFromId, factoryRegister, getChunkGroup, getLength, getOffset, hasPriority, isKnown, setChunkGroup, setLength, setOffset, setPriority, toString
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

ID

public static final java.lang.String ID
See Also:
Constant Field Values
Constructor Detail

PngChunkTRNS

public PngChunkTRNS(ImageInfo info)
Method Detail

cloneDataFromRead

public void cloneDataFromRead(PngChunk other)
Description copied from class: PngChunk
Makes a copy of the chunk.

This is used when copying chunks from a reader to a writer

It should normally be a deep copy, and after the cloning this.equals(other) should return true

Specified by:
cloneDataFromRead in class PngChunk

createRawChunk

public ChunkRaw createRawChunk()
Description copied from class: PngChunk
Creates the physical chunk. This is used when writing (serialization). Each particular chunk class implements its own logic.

Specified by:
createRawChunk in class PngChunk
Returns:
A newly allocated and filled raw chunk

getGray

public int getGray()

getOrderingConstraint

public PngChunk.ChunkOrderingConstraint getOrderingConstraint()
Description copied from class: PngChunk
see PngChunk.ChunkOrderingConstraint

Specified by:
getOrderingConstraint in class PngChunk

getPalletteAlpha

public int[] getPalletteAlpha()
WARNING: non deep copy


getRGB

public int[] getRGB()

parseFromRaw

public void parseFromRaw(ChunkRaw c)
Description copied from class: PngChunk
Parses raw chunk and fill inside data. This is used when reading (deserialization). Each particular chunk class implements its own logic.

Specified by:
parseFromRaw in class PngChunk

setGray

public void setGray(int g)

setIndexEntryAsTransparent

public void setIndexEntryAsTransparent(int palAlphaIndex)
to use when only one pallete index is set as totally transparent


setPalletteAlpha

public void setPalletteAlpha(int[] palAlpha)
WARNING: non deep copy


setRGB

public void setRGB(int r,
                   int g,
                   int b)
Set rgb values