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///////////////////////////////////////////////////////////////////////////// |
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// Name: src/common/imaggif.cpp |
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// Purpose: wxGIFHandler |
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// Author: Vaclav Slavik & Guillermo Rodriguez Garcia |
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// RCS-ID: $Id: imaggif.cpp 41819 2006-10-09 17:51:07Z VZ $ |
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// Copyright: (c) 1999 Vaclav Slavik & Guillermo Rodriguez Garcia |
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// Licence: wxWindows licence |
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///////////////////////////////////////////////////////////////////////////// |
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|
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// For compilers that support precompilation, includes "wx.h". |
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#include "wx/wxprec.h" |
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|
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#ifdef __BORLANDC__ |
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#pragma hdrstop |
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#endif |
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|
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#if wxUSE_IMAGE && wxUSE_GIF |
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|
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#ifndef WX_PRECOMP |
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#include "wx/intl.h" |
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#include "wx/log.h" |
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#endif |
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|
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#include "wx/imaggif.h" |
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#include "wx/gifdecod.h" |
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#include "wx/wfstream.h" |
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|
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IMPLEMENT_DYNAMIC_CLASS(wxGIFHandler,wxImageHandler) |
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|
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//----------------------------------------------------------------------------- |
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// wxGIFHandler |
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//----------------------------------------------------------------------------- |
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|
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#if wxUSE_STREAMS |
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|
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bool wxGIFHandler::LoadFile(wxImage *image, wxInputStream& stream, |
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bool verbose, int index) |
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{ |
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wxGIFDecoder *decod; |
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wxGIFErrorCode error; |
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bool ok = true; |
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|
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// image->Destroy(); |
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decod = new wxGIFDecoder(); |
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error = decod->LoadGIF(stream); |
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|
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if ((error != wxGIF_OK) && (error != wxGIF_TRUNCATED)) |
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{ |
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if (verbose) |
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{ |
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switch (error) |
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{ |
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case wxGIF_INVFORMAT: |
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wxLogError(_("GIF: error in GIF image format.")); |
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break; |
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case wxGIF_MEMERR: |
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wxLogError(_("GIF: not enough memory.")); |
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break; |
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default: |
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wxLogError(_("GIF: unknown error!!!")); |
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break; |
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} |
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} |
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delete decod; |
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return false; |
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} |
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|
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if ((error == wxGIF_TRUNCATED) && verbose) |
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{ |
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wxLogError(_("GIF: data stream seems to be truncated.")); |
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/* go on; image data is OK */ |
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} |
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|
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if (ok) |
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{ |
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ok = decod->ConvertToImage(index != -1 ? (size_t)index : 0, image); |
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} |
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else |
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{ |
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wxLogError(_("GIF: Invalid gif index.")); |
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} |
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|
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delete decod; |
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|
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return ok; |
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} |
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|
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bool wxGIFHandler::SaveFile( wxImage * WXUNUSED(image), |
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wxOutputStream& WXUNUSED(stream), bool verbose ) |
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{ |
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if (verbose) |
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wxLogDebug(wxT("GIF: the handler is read-only!!")); |
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|
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return false; |
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} |
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|
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bool wxGIFHandler::DoCanRead( wxInputStream& stream ) |
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{ |
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wxGIFDecoder decod; |
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return decod.CanRead(stream); |
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} |
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|
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#endif // wxUSE_STREAMS |
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|
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#endif // wxUSE_GIF |
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