03647350fc
This commit is huge but there are no non-white-space changes in it. Some files containing third-party sources (src/msw/wince/time.cpp, src/x11/pango*.cpp) were left unchanged. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61724 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
122 lines
3.0 KiB
C++
122 lines
3.0 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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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: $Id$
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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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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_IMAGE && wxUSE_GIF
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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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#include "wx/imaggif.h"
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#include "wx/gifdecod.h"
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#include "wx/wfstream.h"
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IMPLEMENT_DYNAMIC_CLASS(wxGIFHandler,wxImageHandler)
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//-----------------------------------------------------------------------------
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// wxGIFHandler
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//-----------------------------------------------------------------------------
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#if wxUSE_STREAMS
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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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// image->Destroy();
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decod = new wxGIFDecoder();
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error = decod->LoadGIF(stream);
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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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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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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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delete decod;
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return ok;
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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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{
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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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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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// it's ok to modify the stream position here
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}
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int wxGIFHandler::DoGetImageCount( wxInputStream& stream )
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{
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wxGIFDecoder decod;
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wxGIFErrorCode error = decod.LoadGIF(stream);
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if ( (error != wxGIF_OK) && (error != wxGIF_TRUNCATED) )
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return -1;
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// NOTE: this function modifies the current stream position but it's ok
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// (see wxImageHandler::GetImageCount)
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return decod.GetFrameCount();
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}
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#endif // wxUSE_STREAMS
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#endif // wxUSE_GIF
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