Hjg.Pngcs.Chunks.PngChunkBKGD Class Reference

bKGD chunk, see http://www.w3.org/TR/PNG/#11bKGD More...

Inherits Hjg.Pngcs.Chunks.PngChunkSingle.

Public Member Functions
	PngChunkBKGD (ImageInfo info)
override ChunkOrderingConstraint	GetOrderingConstraint ()
	Get ordering constrain
override ChunkRaw	CreateRawChunk ()
	Serialization. Creates a Raw chunk, ready for write, from this chunk content
override void	ParseFromRaw (ChunkRaw c)
	Deserialization. Given a Raw chunk, just rad, fills this chunk content
override void	CloneDataFromRead (PngChunk other)
	Override to make a copy (normally deep) from other chunk
void	SetGray (int gray)
	Set gray value (0-255 if bitdept=8)
int	GetGray ()
	Gets gray value
void	SetPaletteIndex (int index)
	Set pallette index - only for indexed
int	GetPaletteIndex ()
	Get pallette index - only for indexed
void	SetRGB (int r, int g, int b)
	Sets rgb value, only for rgb images
int[]	GetRGB ()
	Gets rgb value, only for rgb images
Public Member Functions inherited from Hjg.Pngcs.Chunks.PngChunkSingle
	PngChunkSingle (String id, ImageInfo imgInfo)
sealed override bool	AllowsMultiple ()
	This is implemented in PngChunkMultiple/PngChunSingle
override int	GetHashCode ()
override bool	Equals (object obj)
Public Member Functions inherited from Hjg.Pngcs.Chunks.PngChunk
ChunkRaw	createEmptyChunk (int len, bool alloc)
override String	ToString ()
	Basic info: Id, length, Type name

Public Attributes
const String	ID = ChunkHelper.bKGD

Additional Inherited Members
Public Types inherited from Hjg.Pngcs.Chunks.PngChunk
enum	ChunkOrderingConstraint {   NONE, BEFORE_PLTE_AND_IDAT, AFTER_PLTE_BEFORE_IDAT, BEFORE_IDAT,   NA }
	Restrictions for chunk ordering, for ancillary chunks More...
Static Public Member Functions inherited from Hjg.Pngcs.Chunks.PngChunk
static void	FactoryRegister (String chunkId, Type type)
	Registers a Chunk ID in the factory, to instantiate a given type
static T	CloneChunk< T > (T chunk, ImageInfo info)
Protected Member Functions inherited from Hjg.Pngcs.Chunks.PngChunk
	PngChunk (String id, ImageInfo imgInfo)
	Constructs an empty chunk
Protected Attributes inherited from Hjg.Pngcs.Chunks.PngChunk
readonly ImageInfo	ImgInfo
	Image basic info, mostly for some checks
Properties inherited from Hjg.Pngcs.Chunks.PngChunk
bool	Priority [get, set]
	For writing. Queued chunks with high priority will be written as soon as possible
int	ChunkGroup [get, set]
	Chunk group where it was read or writen
int	Length [get, set]
long	Offset [get, set]

Detailed Description

bKGD chunk, see http://www.w3.org/TR/PNG/#11bKGD

Constructor & Destructor Documentation

Hjg.Pngcs.Chunks.PngChunkBKGD.PngChunkBKGD

(

ImageInfo

info

)

Member Function Documentation

override ChunkOrderingConstraint Hjg.Pngcs.Chunks.PngChunkBKGD.GetOrderingConstraint ( )

virtual

Get ordering constrain

Returns

Implements Hjg.Pngcs.Chunks.PngChunk.

override ChunkRaw Hjg.Pngcs.Chunks.PngChunkBKGD.CreateRawChunk ( )

virtual

Serialization. Creates a Raw chunk, ready for write, from this chunk content

Implements Hjg.Pngcs.Chunks.PngChunk.

override void Hjg.Pngcs.Chunks.PngChunkBKGD.ParseFromRaw ( ChunkRaw  c )

virtual

Deserialization. Given a Raw chunk, just rad, fills this chunk content

Implements Hjg.Pngcs.Chunks.PngChunk.

override void Hjg.Pngcs.Chunks.PngChunkBKGD.CloneDataFromRead ( PngChunk  other )

virtual

Override to make a copy (normally deep) from other chunk

Parameters

other

Implements Hjg.Pngcs.Chunks.PngChunk.

void Hjg.Pngcs.Chunks.PngChunkBKGD.SetGray

(

int

gray

)

Set gray value (0-255 if bitdept=8)

Parameters

gray

int Hjg.Pngcs.Chunks.PngChunkBKGD.GetGray

(

)

Gets gray value

Returns

gray value (0-255 if bitdept=8)

void Hjg.Pngcs.Chunks.PngChunkBKGD.SetPaletteIndex

(

int

index

)

Set pallette index - only for indexed

Parameters

index

int Hjg.Pngcs.Chunks.PngChunkBKGD.GetPaletteIndex

(

)

Get pallette index - only for indexed

Returns

void Hjg.Pngcs.Chunks.PngChunkBKGD.SetRGB	(	int	r,
		int	g,
		int	b
	)

Sets rgb value, only for rgb images

Parameters

r
g
b

int [] Hjg.Pngcs.Chunks.PngChunkBKGD.GetRGB

(

)

Gets rgb value, only for rgb images

Returns

[r , g, b] array

Member Data Documentation

const String Hjg.Pngcs.Chunks.PngChunkBKGD.ID = ChunkHelper.bKGD