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/image.h"
  18
  19 //-----------------------------------------------------------------------------
  20 // wxPNGHandler
  21 //-----------------------------------------------------------------------------
  22
  23 #if wxUSE_LIBPNG
  24
  25 #define wxIMAGE_OPTION_PNG_FORMAT    wxT("PngFormat")
  26 #define wxIMAGE_OPTION_PNG_BITDEPTH  wxT("PngBitDepth")
  27
  28 enum
  29 {
  30     wxPNG_TYPE_COLOUR = 0,
  31     wxPNG_TYPE_GREY = 2,
  32     wxPNG_TYPE_GREY_RED = 3
  33 };
  34
  35 class WXDLLEXPORT wxPNGHandler: public wxImageHandler
  36 {
  37 public:
  38     inline wxPNGHandler()
  39     {
  40         m_name = wxT("PNG file");
  41         m_extension = wxT("png");
  42         m_type = wxBITMAP_TYPE_PNG;
  43         m_mime = wxT("image/png");
  44     }
  45
  46 #if wxUSE_STREAMS
  47     virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
  48     virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
  49     virtual bool DoCanRead( wxInputStream& stream );
  50 #endif
  51
  52 private:
  53     DECLARE_DYNAMIC_CLASS(wxPNGHandler)
  54 };
  55 #endif
  56
  57
  58 #endif
  59   // _WX_IMAGPNG_H_
  60