Import r67258 of the wxWidgets trunk, which I expect will before

long become wxWidgets 2.9.2, which in turn is expected to be the last 2.9 release before the 3.0 stable release. Since the full wxWidgets distribution is rather large, I have imported only the parts that we use, on a subdirectory basis: art include/wx/*.* include/wx/aui include/wx/cocoa include/wx/generic include/wx/gtk include/wx/meta include/wx/msw include/wx/osx include/wx/persist include/wx/private include/wx/protocol include/wx/unix src/aui src/common src/generic src/gtk src/msw src/osx src/unix git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7380 8ced0084-cf51-0410-be5f-012b33b47a6e
2025-07-29 09:09:52 -06:00 · 2011-03-20 18:05:19 +00:00
parent 205637ccc3
commit d14efe561b
1945 changed files with 694474 additions and 0 deletions
--- a/Externals/wxWidgets3/include/wx/gifdecod.h
+++ b/Externals/wxWidgets3/include/wx/gifdecod.h
@ -0,0 +1,114 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/gifdecod.h
+// Purpose:     wxGIFDecoder, GIF reader for wxImage and wxAnimation
+// Author:      Guillermo Rodriguez Garcia <guille@iies.es>
+// Version:     3.02
+// CVS-ID:      $Id: gifdecod.h 61724 2009-08-21 10:41:26Z VZ $
+// Copyright:   (c) 1999 Guillermo Rodriguez Garcia
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_GIFDECOD_H_
+#define _WX_GIFDECOD_H_
+
+#include "wx/defs.h"
+
+#if wxUSE_STREAMS && wxUSE_GIF
+
+#include "wx/stream.h"
+#include "wx/image.h"
+#include "wx/animdecod.h"
+#include "wx/dynarray.h"
+
+// internal utility used to store a frame in 8bit-per-pixel format
+class GIFImage;
+
+
+// --------------------------------------------------------------------------
+// Constants
+// --------------------------------------------------------------------------
+
+// Error codes:
+//  Note that the error code wxGIF_TRUNCATED means that the image itself
+//  is most probably OK, but the decoder didn't reach the end of the data
+//  stream; this means that if it was not reading directly from file,
+//  the stream will not be correctly positioned.
+//
+enum wxGIFErrorCode
+{
+    wxGIF_OK = 0,                   // everything was OK
+    wxGIF_INVFORMAT,                // error in GIF header
+    wxGIF_MEMERR,                   // error allocating memory
+    wxGIF_TRUNCATED                 // file appears to be truncated
+};
+
+// --------------------------------------------------------------------------
+// wxGIFDecoder class
+// --------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxGIFDecoder : public wxAnimationDecoder
+{
+public:
+    // constructor, destructor, etc.
+    wxGIFDecoder();
+    ~wxGIFDecoder();
+
+    // get data of current frame
+    unsigned char* GetData(unsigned int frame) const;
+    unsigned char* GetPalette(unsigned int frame) const;
+    unsigned int GetNcolours(unsigned int frame) const;
+    int GetTransparentColourIndex(unsigned int frame) const;
+    wxColour GetTransparentColour(unsigned int frame) const;
+
+    virtual wxSize GetFrameSize(unsigned int frame) const;
+    virtual wxPoint GetFramePosition(unsigned int frame) const;
+    virtual wxAnimationDisposal GetDisposalMethod(unsigned int frame) const;
+    virtual long GetDelay(unsigned int frame) const;
+
+    // GIFs can contain both static images and animations
+    bool IsAnimation() const
+        { return m_nFrames > 1; }
+
+    // load function which returns more info than just Load():
+    wxGIFErrorCode LoadGIF( wxInputStream& stream );
+
+    // free all internal frames
+    void Destroy();
+
+    // implementation of wxAnimationDecoder's pure virtuals
+    virtual bool Load( wxInputStream& stream )
+        { return LoadGIF(stream) == wxGIF_OK; }
+
+    bool ConvertToImage(unsigned int frame, wxImage *image) const;
+
+    wxAnimationDecoder *Clone() const
+        { return new wxGIFDecoder; }
+    wxAnimationType GetType() const
+        { return wxANIMATION_TYPE_GIF; }
+
+private:
+    // wxAnimationDecoder pure virtual
+    virtual bool DoCanRead( wxInputStream& stream ) const;
+        // modifies current stream position (see wxAnimationDecoder::CanRead)
+
+    int getcode(wxInputStream& stream, int bits, int abfin);
+    wxGIFErrorCode dgif(wxInputStream& stream,
+                        GIFImage *img, int interl, int bits);
+
+
+    // array of all frames
+    wxArrayPtrVoid m_frames;
+
+    // decoder state vars
+    int           m_restbits;       // remaining valid bits
+    unsigned int  m_restbyte;       // remaining bytes in this block
+    unsigned int  m_lastbyte;       // last byte read
+    unsigned char m_buffer[256];    // buffer for reading
+    unsigned char *m_bufp;          // pointer to next byte in buffer
+
+    wxDECLARE_NO_COPY_CLASS(wxGIFDecoder);
+};
+
+#endif // wxUSE_STREAMS && wxUSE_GIF
+
+#endif // _WX_GIFDECOD_H_