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 #include "wx/defs.h"
  14
  15 //-----------------------------------------------------------------------------
  16 // wxPNGHandler
  17 //-----------------------------------------------------------------------------
  18
  19 #if wxUSE_LIBPNG
  20
  21 #include "wx/image.h"
  22
  23 #define wxIMAGE_OPTION_PNG_FORMAT    wxT("PngFormat")
  24 #define wxIMAGE_OPTION_PNG_BITDEPTH  wxT("PngBitDepth")
  25
  26 enum
  27 {
  28     wxPNG_TYPE_COLOUR = 0,
  29     wxPNG_TYPE_GREY = 2,
  30     wxPNG_TYPE_GREY_RED = 3
  31 };
  32
  33 class WXDLLEXPORT wxPNGHandler: public wxImageHandler
  34 {
  35 public:
  36     inline wxPNGHandler()
  37     {
  38         m_name = wxT("PNG file");
  39         m_extension = wxT("png");
  40         m_type = wxBITMAP_TYPE_PNG;
  41         m_mime = wxT("image/png");
  42     }
  43
  44 #if wxUSE_STREAMS
  45     virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
  46     virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
  47 protected:
  48     virtual bool DoCanRead( wxInputStream& stream );
  49 #endif
  50
  51 private:
  52     DECLARE_DYNAMIC_CLASS(wxPNGHandler)
  53 };
  54
  55 #endif
  56   // wxUSE_LIBPNG
  57
  58 #endif
  59   // _WX_IMAGPNG_H_
  60