3f66f6a5b3
This keyword is not expanded by Git which means it's not replaced with the correct revision value in the releases made using git-based scripts and it's confusing to have lines with unexpanded "$Id$" in the released files. As expanding them with Git is not that simple (it could be done with git archive and export-subst attribute) and there are not many benefits in having them in the first place, just remove all these lines. If nothing else, this will make an eventual transition to Git simpler. Closes #14487. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/gifdecod.h
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// Purpose: wxGIFDecoder, GIF reader for wxImage and wxAnimation
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// Author: Guillermo Rodriguez Garcia <guille@iies.es>
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// Version: 3.02
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// Copyright: (c) 1999 Guillermo Rodriguez Garcia
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_GIFDECOD_H_
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#define _WX_GIFDECOD_H_
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#include "wx/defs.h"
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#if wxUSE_STREAMS && wxUSE_GIF
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#include "wx/stream.h"
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#include "wx/image.h"
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#include "wx/animdecod.h"
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#include "wx/dynarray.h"
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// internal utility used to store a frame in 8bit-per-pixel format
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class GIFImage;
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// --------------------------------------------------------------------------
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// Constants
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// --------------------------------------------------------------------------
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// Error codes:
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// Note that the error code wxGIF_TRUNCATED means that the image itself
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// is most probably OK, but the decoder didn't reach the end of the data
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// stream; this means that if it was not reading directly from file,
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// the stream will not be correctly positioned.
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//
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enum wxGIFErrorCode
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{
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wxGIF_OK = 0, // everything was OK
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wxGIF_INVFORMAT, // error in GIF header
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wxGIF_MEMERR, // error allocating memory
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wxGIF_TRUNCATED // file appears to be truncated
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};
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// --------------------------------------------------------------------------
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// wxGIFDecoder class
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// --------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxGIFDecoder : public wxAnimationDecoder
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{
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public:
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// constructor, destructor, etc.
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wxGIFDecoder();
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~wxGIFDecoder();
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// get data of current frame
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unsigned char* GetData(unsigned int frame) const;
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unsigned char* GetPalette(unsigned int frame) const;
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unsigned int GetNcolours(unsigned int frame) const;
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int GetTransparentColourIndex(unsigned int frame) const;
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wxColour GetTransparentColour(unsigned int frame) const;
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virtual wxSize GetFrameSize(unsigned int frame) const;
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virtual wxPoint GetFramePosition(unsigned int frame) const;
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virtual wxAnimationDisposal GetDisposalMethod(unsigned int frame) const;
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virtual long GetDelay(unsigned int frame) const;
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// GIFs can contain both static images and animations
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bool IsAnimation() const
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{ return m_nFrames > 1; }
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// load function which returns more info than just Load():
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wxGIFErrorCode LoadGIF( wxInputStream& stream );
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// free all internal frames
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void Destroy();
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// implementation of wxAnimationDecoder's pure virtuals
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virtual bool Load( wxInputStream& stream )
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{ return LoadGIF(stream) == wxGIF_OK; }
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bool ConvertToImage(unsigned int frame, wxImage *image) const;
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wxAnimationDecoder *Clone() const
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{ return new wxGIFDecoder; }
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wxAnimationType GetType() const
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{ return wxANIMATION_TYPE_GIF; }
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private:
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// wxAnimationDecoder pure virtual
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virtual bool DoCanRead( wxInputStream& stream ) const;
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// modifies current stream position (see wxAnimationDecoder::CanRead)
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int getcode(wxInputStream& stream, int bits, int abfin);
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wxGIFErrorCode dgif(wxInputStream& stream,
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GIFImage *img, int interl, int bits);
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// array of all frames
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wxArrayPtrVoid m_frames;
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// decoder state vars
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int m_restbits; // remaining valid bits
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unsigned int m_restbyte; // remaining bytes in this block
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unsigned int m_lastbyte; // last byte read
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unsigned char m_buffer[256]; // buffer for reading
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unsigned char *m_bufp; // pointer to next byte in buffer
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wxDECLARE_NO_COPY_CLASS(wxGIFDecoder);
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};
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#endif // wxUSE_STREAMS && wxUSE_GIF
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#endif // _WX_GIFDECOD_H_
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