/////////////////////////////////////////////////////////////////////////////
-// Name: imaggif.h
-// Purpose: wxImage handler for GIFs (read-only)
-// Author: Vaclav Slavik (of this header only)
+// Name: wx/imaggif.h
+// Purpose: wxImage GIF handler
+// 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
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_IMAGGIF_H_
#define _WX_IMAGGIF_H_
-#ifdef __GNUG__
-#pragma interface "imaggif.h"
-#endif
+#include "wx/image.h"
-#include <wx/setup.h>
-#include <wx/object.h>
-#include <wx/string.h>
-#include <wx/gdicmn.h>
-#include <wx/stream.h>
-#include <wx/image.h>
//-----------------------------------------------------------------------------
// wxGIFHandler
//-----------------------------------------------------------------------------
-class WXDLLEXPORT wxGIFHandler : public wxImageHandler
-{
- DECLARE_DYNAMIC_CLASS(wxGIFHandler)
+#if wxUSE_GIF
+
+#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_name = wxT("GIF file");
+ m_extension = wxT("gif");
+ m_type = wxBITMAP_TYPE_GIF;
+ m_mime = wxT("image/gif");
+ m_hashTable = NULL;
+ }
- inline wxGIFHandler()
- {
- m_name = "GIF file";
- m_extension = "gif";
- m_type = wxBITMAP_TYPE_GIF;
- };
+#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 LoadFile( wxImage *image, wxInputStream& stream );
- virtual bool SaveFile( wxImage *image, wxOutputStream& stream );
-};
+ // 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
- // _WX_IMAGGIF_H_
+
+private:
+ DECLARE_DYNAMIC_CLASS(wxGIFHandler)
+};
+
+#endif // wxUSE_GIF
+
+#endif // _WX_IMAGGIF_H_