initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/include/wx/imaggif.h

@@ -0,0 +1,98 @@
+/////////////////////////////////////////////////////////////////////////////
+// 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_
+
+#include "wx/image.h"
+
+#include <vector>
+
+
+//-----------------------------------------------------------------------------
+// wxGIFHandler
+//-----------------------------------------------------------------------------
+
+#if wxUSE_GIF
+
+#define wxIMAGE_OPTION_GIF_COMMENT wxT("GifComment")
+
+#define wxIMAGE_OPTION_GIF_TRANSPARENCY           wxS("Transparency")
+#define wxIMAGE_OPTION_GIF_TRANSPARENCY_HIGHLIGHT wxS("Highlight")
+#define wxIMAGE_OPTION_GIF_TRANSPARENCY_UNCHANGED wxS("Unchanged")
+
+struct wxRGB;
+struct GifHashTableType;
+
+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 = nullptr;
+    }
+
+#if wxUSE_STREAMS
+    virtual bool LoadFile(wxImage *image, wxInputStream& stream,
+                          bool verbose = true, int index = -1) override;
+    virtual bool SaveFile(wxImage *image, wxOutputStream& stream,
+                          bool verbose=true) override;
+
+    // Save animated gif
+    bool SaveAnimation(const std::vector<wxImage>& images, wxOutputStream *stream,
+        bool verbose = true, int delayMilliSecs = 1000);
+
+protected:
+    virtual int DoGetImageCount(wxInputStream& stream) override;
+    virtual bool DoCanRead(wxInputStream& stream) override;
+
+    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:
+    wxDECLARE_DYNAMIC_CLASS(wxGIFHandler);
+};
+
+#endif // wxUSE_GIF
+
+#endif // _WX_IMAGGIF_H_
+