Hjg.Pngcs.Chunks.ChunksList Class Reference

All chunks that form an image, read or to be written More...

Inherited by Hjg.Pngcs.Chunks.ChunksListForWrite.

Public Member Functions
Dictionary< String, int >	GetChunksKeys ()
	Keys of processed (read or writen) chunks
List< PngChunk >	GetChunks ()
	Returns a copy of the chunk list (but the chunks are not copied)
void	AppendReadChunk (PngChunk chunk, int chunkGroup)
	Adds chunk in next position. This is used only by the pngReader
List< PngChunk >	GetById (String id)
	All chunks with this ID
List< PngChunk >	GetById (String id, String innerid)
	Same as ID, but we an additional discriminator for textual keys
PngChunk	GetById1 (String id)
	Returns only one chunk
PngChunk	GetById1 (String id, bool failIfMultiple)
	Returns only one chunk
PngChunk	GetById1 (String id, String innerid, bool failIfMultiple)
	Sames as GetById1(String id, bool failIfMultiple) but allows an additional innerid
List< PngChunk >	GetEquivalent (PngChunk chunk)
	Finds all chunks "equivalent" to this one
override String	ToString ()
	Only the amount of chunks
String	ToStringFull ()
	Detailed information, for debugging

Protected Attributes
List< PngChunk >	chunks
	Includes all chunks, but IDAT is a single pseudo chunk without data

Detailed Description

All chunks that form an image, read or to be written

http://www.w3.org/TR/PNG/#table53

Member Function Documentation

Dictionary<String,int> Hjg.Pngcs.Chunks.ChunksList.GetChunksKeys

(

)

Keys of processed (read or writen) chunks

Returns

key:chunk id, val: number of occurrences

List<PngChunk> Hjg.Pngcs.Chunks.ChunksList.GetChunks

(

)

Returns a copy of the chunk list (but the chunks are not copied)

This should not be used for general metadata handling

Returns

void Hjg.Pngcs.Chunks.ChunksList.AppendReadChunk	(	PngChunk	chunk,
		int	chunkGroup
	)

Adds chunk in next position. This is used only by the pngReader

Parameters

chunk
chunkGroup

List<PngChunk> Hjg.Pngcs.Chunks.ChunksList.GetById

(

String

id

)

All chunks with this ID

The GetBy... methods never include queued chunks

Parameters

id

Returns

List, empty if none

List<PngChunk> Hjg.Pngcs.Chunks.ChunksList.GetById	(	String	id,
		String	innerid
	)

Same as ID, but we an additional discriminator for textual keys

If innerid!=null and the chunk is PngChunkTextVar or PngChunkSPLT, it's filtered by that id

Parameters

id
innerid	Only used for text and SPLT chunks

Returns

List, empty if none

PngChunk Hjg.Pngcs.Chunks.ChunksList.GetById1

(

String

id

)

Returns only one chunk

Parameters

id

Returns

First chunk found, null if not found

PngChunk Hjg.Pngcs.Chunks.ChunksList.GetById1	(	String	id,
		bool	failIfMultiple
	)

Returns only one chunk

Parameters

id
failIfMultiple	true, and more than one found: exception

Returns

null if not found

PngChunk Hjg.Pngcs.Chunks.ChunksList.GetById1	(	String	id,
		String	innerid,
		bool	failIfMultiple
	)

Sames as GetById1(String id, bool failIfMultiple) but allows an additional innerid

Parameters

id
innerid
failIfMultiple	true, and more than one found: exception

Returns

null if not found

List<PngChunk> Hjg.Pngcs.Chunks.ChunksList.GetEquivalent

(

PngChunk

chunk

)

Finds all chunks "equivalent" to this one

Parameters

chunk

Returns

Empty if nothing found

override String Hjg.Pngcs.Chunks.ChunksList.ToString

(

)

Only the amount of chunks

Returns

String Hjg.Pngcs.Chunks.ChunksList.ToStringFull

(

)

Detailed information, for debugging

Returns

Member Data Documentation

List<PngChunk> Hjg.Pngcs.Chunks.ChunksList.chunks

protected

Includes all chunks, but IDAT is a single pseudo chunk without data