Foxit PDF SDK
CFX_CachedFileRead Class Reference

Cached file read interface. More...

Inheritance diagram for CFX_CachedFileRead:
IFX_FileStream IFX_FileRead IFX_FileWrite IFX_StreamRead IFX_StreamWrite

Public Member Functions

 CFX_CachedFileRead ()
 Constructor.
 
virtual ~CFX_CachedFileRead ()
 Destructor.

 
FX_BOOL AttachFile (IFX_FileRead *pFile, FX_BOOL bTakeOver)
 Attach a file read. More...
 
virtual FX_INT64 GetPosition ()
 Get the current reading position in stream. More...
 
virtual FX_INT64 GetSize ()
 Get total size of the file. More...
 
FX_BOOL Init (FX_INT32 nChunkSize, FX_INT32 nChunkCount, FX_LPVOID pBuffer, IFX_Allocator *pAllocator=0)
 Initialize the chunk size and chunk count. More...
 
virtual FX_BOOL IsEOF ()
 Determine whether reach the end of stream. More...
 
FX_BOOL PreCache (FX_INT64 offset, FX_INT32 nCacheCount)
 Attach a file read. More...
 
virtual FX_BOOL ReadBlock (void *buffer, FX_INT64 offset, size_t size)
 Read a data block from the file. More...
 
virtual size_t ReadBlock (void *buffer, size_t size)
 Read data block from stream. More...
 
- Public Member Functions inherited from IFX_FileStream
virtual FX_BOOL WriteBlock (const void *buffer, size_t size)
 Write a block data to the end of current stream. More...
 
- Public Member Functions inherited from IFX_FileRead
virtual void ClearRange ()
 Clear accessing range set by function IFX_FileRead::SetRange. More...
 
virtual FX_INT64 SetPosition (FX_INT64 pos)
 Set the current file accessing position. More...
 
virtual FX_BOOL SetRange (FX_INT64 offset, FX_INT64 size)
 Set accessing range. More...
 

Protected Member Functions

virtual FX_BOOL Flush ()
 Flush internal buffer. Unsupported for reading mode, return false directly.
 
virtual void Release ()
 Destroy the current instance. More...
 
virtual IFX_FileStreamRetain ()
 Create a shared instance. More...
 
virtual FX_BOOL WriteBlock (const void *buffer, FX_INT64 offset, size_t size)
 Write a block data into stream. Unsupported for reading mode, return false directly.
 

Detailed Description

Cached file read interface.