include/wx/imagpng.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        imagpng.h
   3 // Purpose:     wxImage PNG handler
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_IMAGPNG_H_
  11 #define _WX_IMAGPNG_H_
  12
  13 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  14 #pragma interface "imagpng.h"
  15 #endif
  16
  17 #include "wx/defs.h"
  18
  19 //-----------------------------------------------------------------------------
  20 // wxPNGHandler
  21 //-----------------------------------------------------------------------------
  22
  23 #if wxUSE_LIBPNG
  24
  25 #include "wx/image.h"
  26
  27 #define wxIMAGE_OPTION_PNG_FORMAT    wxT("PngFormat")
  28 #define wxIMAGE_OPTION_PNG_BITDEPTH  wxT("PngBitDepth")
  29
  30 enum
  31 {
  32     wxPNG_TYPE_COLOUR = 0,
  33     wxPNG_TYPE_GREY = 2,
  34     wxPNG_TYPE_GREY_RED = 3
  35 };
  36
  37 class WXDLLEXPORT wxPNGHandler: public wxImageHandler
  38 {
  39 public:
  40     inline wxPNGHandler()
  41     {
  42         m_name = wxT("PNG file");
  43         m_extension = wxT("png");
  44         m_type = wxBITMAP_TYPE_PNG;
  45         m_mime = wxT("image/png");
  46     }
  47
  48 #if wxUSE_STREAMS
  49     virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
  50     virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
  51     virtual bool DoCanRead( wxInputStream& stream );
  52 #endif
  53
  54 private:
  55     DECLARE_DYNAMIC_CLASS(wxPNGHandler)
  56 };
  57
  58 #endif
  59   // wxUSE_LIBPNG
  60
  61 #endif
  62   // _WX_IMAGPNG_H_
  63