src/common/imaggif.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        imaggif.cpp
   3 // Purpose:     wxGIFHandler
   4 // Author:      Vaclav Slavik & Guillermo Rodriguez Garcia
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /*
  10   We don't put pragma implement in this file because it is already present in
  11   src/common/image.cpp
  12 */
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include <wx/wxprec.h>
  16
  17 #ifdef __BORLANDC__
  18 #  pragma hdrstop
  19 #endif
  20
  21 #ifndef WX_PRECOMP
  22 #  include "wx/defs.h"
  23 #endif
  24
  25 #if 1 // change this to #if wxUSE_GIF
  26
  27 #include "wx/image.h"
  28 #include "wx/gifdecod.h"
  29 #include "wx/wfstream.h"
  30 #include "wx/module.h"
  31 #include "wx/log.h"
  32
  33 #if !USE_SHARED_LIBRARIES
  34 IMPLEMENT_DYNAMIC_CLASS(wxGIFHandler,wxImageHandler)
  35 #endif
  36
  37 #if wxUSE_STREAMS
  38
  39 //-----------------------------------------------------------------------------
  40 // wxGIFHandler
  41 //-----------------------------------------------------------------------------
  42
  43 bool wxGIFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose )
  44 {
  45     wxGIFDecoder *decod;
  46     bool ok;
  47
  48     decod = new wxGIFDecoder(&stream, TRUE);
  49
  50     if (decod->ReadGIF() != E_OK)
  51     {
  52         if (verbose)
  53             wxLogDebug(_T("Error reading GIF"));
  54
  55         delete decod;
  56         return FALSE;
  57     }
  58
  59     image->Destroy();
  60     ok = decod->ConvertToImage(image);
  61
  62     delete decod;
  63     return ok;
  64 }
  65
  66 bool wxGIFHandler::SaveFile( wxImage * WXUNUSED(image),
  67                              wxOutputStream& WXUNUSED(stream), bool verbose )
  68 {
  69     if (verbose)
  70         wxLogDebug(_T("wxGIFHandler is read-only!!"));
  71
  72     return FALSE;
  73 }
  74
  75 bool wxGIFHandler::CanRead( wxInputStream& stream )
  76 {
  77     wxGIFDecoder *decod;
  78     bool ok;
  79
  80     decod = new wxGIFDecoder(&stream);
  81     ok = decod->CanRead();
  82
  83     delete decod;
  84     return ok;
  85 }
  86
  87 #endif
  88   // wxUSE_STREAMS
  89
  90 #endif
  91   // wxUSE_GIF