| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: imaggif.cpp |
| 3 | // Purpose: wxGIFHandler |
| 4 | // Author: Vaclav Slavik & Guillermo Rodriguez Garcia |
| 5 | // RCS-ID: $Id$ |
| 6 | // Copyright: (c) 1999 Vaclav Slavik & Guillermo Rodriguez Garcia |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | #ifdef __GNUG__ |
| 11 | #pragma implementation "imaggif.h" |
| 12 | #endif |
| 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 wxUSE_GIF |
| 26 | |
| 27 | #include "wx/imaggif.h" |
| 28 | #include "wx/gifdecod.h" |
| 29 | #include "wx/wfstream.h" |
| 30 | #include "wx/log.h" |
| 31 | #include "wx/intl.h" |
| 32 | |
| 33 | IMPLEMENT_DYNAMIC_CLASS(wxGIFHandler,wxImageHandler) |
| 34 | |
| 35 | //----------------------------------------------------------------------------- |
| 36 | // wxGIFHandler |
| 37 | //----------------------------------------------------------------------------- |
| 38 | |
| 39 | #if wxUSE_STREAMS |
| 40 | |
| 41 | bool wxGIFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int WXUNUSED(index) ) |
| 42 | { |
| 43 | wxGIFDecoder *decod; |
| 44 | int error; |
| 45 | bool ok; |
| 46 | |
| 47 | decod = new wxGIFDecoder(&stream, TRUE); |
| 48 | |
| 49 | if ((error = decod->ReadGIF()) != wxGIF_OK) |
| 50 | { |
| 51 | if (verbose) |
| 52 | { |
| 53 | switch (error) |
| 54 | { |
| 55 | case wxGIF_INVFORMAT: wxLogError(_("wxGIFHandler: error in GIF image format")); break; |
| 56 | case wxGIF_MEMERR: wxLogError(_("wxGIFHandler: couldn't allocate enough memory")); break; |
| 57 | default: wxLogError(_("wxGIFHandler: unknown error !!!")); |
| 58 | } |
| 59 | } |
| 60 | delete decod; |
| 61 | return FALSE; |
| 62 | } |
| 63 | |
| 64 | image->Destroy(); |
| 65 | ok = decod->ConvertToImage(image); |
| 66 | |
| 67 | delete decod; |
| 68 | return ok; |
| 69 | } |
| 70 | |
| 71 | bool wxGIFHandler::SaveFile( wxImage * WXUNUSED(image), |
| 72 | wxOutputStream& WXUNUSED(stream), bool verbose ) |
| 73 | { |
| 74 | if (verbose) |
| 75 | wxLogDebug(wxT("wxGIFHandler is read-only!!")); |
| 76 | |
| 77 | return FALSE; |
| 78 | } |
| 79 | |
| 80 | bool wxGIFHandler::DoCanRead( wxInputStream& stream ) |
| 81 | { |
| 82 | wxGIFDecoder *decod; |
| 83 | bool ok; |
| 84 | |
| 85 | decod = new wxGIFDecoder(&stream); |
| 86 | ok = decod->CanRead(); |
| 87 | |
| 88 | delete decod; |
| 89 | return ok; |
| 90 | } |
| 91 | |
| 92 | #endif // wxUSE_STREAMS |
| 93 | |
| 94 | #endif // wxUSE_GIF |