/////////////////////////////////////////////////////////////////////////////
-// Name: imaggif.h
+// Name: wx/imaggif.h
// Purpose: wxImage GIF handler
-// Author: Vaclav Slavik & Guillermo Rodriguez Garcia
-// RCS-ID: $Id$
-// Copyright: (c) Guillermo Rodriguez Garcia
+// Author: Vaclav Slavik, Guillermo Rodriguez Garcia, Gershon Elber, Troels K
+// Copyright: (c) 1999-2011 Vaclav Slavik, Guillermo Rodriguez Garcia, Gershon Elber, Troels K
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#if wxUSE_GIF
-class WXDLLEXPORT wxGIFHandler : public wxImageHandler
+#define wxIMAGE_OPTION_GIF_COMMENT wxT("GifComment")
+
+struct wxRGB;
+struct GifHashTableType;
+class WXDLLIMPEXP_FWD_CORE wxImageArray; // anidecod.h
+
+class WXDLLIMPEXP_CORE wxGIFHandler : public wxImageHandler
{
public:
inline wxGIFHandler()
m_extension = wxT("gif");
m_type = wxBITMAP_TYPE_GIF;
m_mime = wxT("image/gif");
+ m_hashTable = NULL;
}
#if wxUSE_STREAMS
- virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
- virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
- virtual bool DoCanRead( wxInputStream& stream );
+ virtual bool LoadFile(wxImage *image, wxInputStream& stream,
+ bool verbose = true, int index = -1);
+ virtual bool SaveFile(wxImage *image, wxOutputStream& stream,
+ bool verbose=true);
+
+ // Save animated gif
+ bool SaveAnimation(const wxImageArray& images, wxOutputStream *stream,
+ bool verbose = true, int delayMilliSecs = 1000);
+
+protected:
+ virtual int DoGetImageCount(wxInputStream& stream);
+ virtual bool DoCanRead(wxInputStream& stream);
+
+ bool DoSaveFile(const wxImage&, wxOutputStream *, bool verbose,
+ bool first, int delayMilliSecs, bool loop,
+ const wxRGB *pal, int palCount,
+ int mask_index);
+#endif // wxUSE_STREAMS
+protected:
+
+ // Declarations for saving
+
+ unsigned long m_crntShiftDWord; /* For bytes decomposition into codes. */
+ int m_pixelCount;
+ struct GifHashTableType *m_hashTable;
+ wxInt16
+ m_EOFCode, /* The EOF LZ code. */
+ m_clearCode, /* The CLEAR LZ code. */
+ m_runningCode, /* The next code algorithm can generate. */
+ m_runningBits, /* The number of bits required to represent RunningCode. */
+ m_maxCode1, /* 1 bigger than max. possible code, in RunningBits bits. */
+ m_crntCode, /* Current algorithm code. */
+ m_crntShiftState; /* Number of bits in CrntShiftDWord. */
+ wxUint8 m_LZBuf[256]; /* Compressed input is buffered here. */
+
+ bool InitHashTable();
+ void ClearHashTable();
+ void InsertHashTable(unsigned long key, int code);
+ int ExistsHashTable(unsigned long key);
+
+#if wxUSE_STREAMS
+ bool CompressOutput(wxOutputStream *, int code);
+ bool SetupCompress(wxOutputStream *, int bpp);
+ bool CompressLine(wxOutputStream *, const wxUint8 *line, int lineLen);
#endif
private:
DECLARE_DYNAMIC_CLASS(wxGIFHandler)
};
-#endif
+#endif // wxUSE_GIF
-#endif
- // _WX_IMAGGIF_H_
+#endif // _WX_IMAGGIF_H_