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b59bf2db JS |
1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: imaggif.cpp | |
3 | // Purpose: wxGIFHandler | |
8a68d8b6 | 4 | // Author: Vaclav Slavik & Guillermo Rodriguez Garcia |
464122b6 | 5 | // RCS-ID: $Id$ |
e08e239b | 6 | // Copyright: (c) 1999 Vaclav Slavik & Guillermo Rodriguez Garcia |
b59bf2db JS |
7 | // Licence: wxWindows licence |
8 | ///////////////////////////////////////////////////////////////////////////// | |
9 | ||
8f493002 VS |
10 | #ifdef __GNUG__ |
11 | #pragma implementation "imaggif.h" | |
12 | #endif | |
b59bf2db JS |
13 | |
14 | // For compilers that support precompilation, includes "wx.h". | |
3096bd2f | 15 | #include "wx/wxprec.h" |
b59bf2db JS |
16 | |
17 | #ifdef __BORLANDC__ | |
464122b6 | 18 | # pragma hdrstop |
b59bf2db JS |
19 | #endif |
20 | ||
ce4169a4 | 21 | #ifndef WX_PRECOMP |
464122b6 | 22 | # include "wx/defs.h" |
ce4169a4 | 23 | #endif |
b59bf2db | 24 | |
c96ea657 | 25 | #if wxUSE_IMAGE && wxUSE_GIF |
8a68d8b6 | 26 | |
8f493002 | 27 | #include "wx/imaggif.h" |
464122b6 | 28 | #include "wx/gifdecod.h" |
ce4169a4 | 29 | #include "wx/wfstream.h" |
ce4169a4 | 30 | #include "wx/log.h" |
f6b77239 | 31 | #include "wx/intl.h" |
b59bf2db | 32 | |
ce4169a4 RR |
33 | IMPLEMENT_DYNAMIC_CLASS(wxGIFHandler,wxImageHandler) |
34 | ||
b59bf2db JS |
35 | //----------------------------------------------------------------------------- |
36 | // wxGIFHandler | |
37 | //----------------------------------------------------------------------------- | |
38 | ||
9ab6ee85 GRG |
39 | #if wxUSE_STREAMS |
40 | ||
700ec454 | 41 | bool wxGIFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int WXUNUSED(index) ) |
b59bf2db | 42 | { |
464122b6 | 43 | wxGIFDecoder *decod; |
e08e239b | 44 | int error; |
464122b6 | 45 | bool ok; |
b59bf2db | 46 | |
0141d2c9 | 47 | // image->Destroy(); |
464122b6 | 48 | decod = new wxGIFDecoder(&stream, TRUE); |
8141573c | 49 | error = decod->ReadGIF(); |
8a68d8b6 | 50 | |
8141573c | 51 | if ((error != wxGIF_OK) && (error != wxGIF_TRUNCATED)) |
995612e2 | 52 | { |
e08e239b GRG |
53 | if (verbose) |
54 | { | |
55 | switch (error) | |
56 | { | |
8141573c | 57 | case wxGIF_INVFORMAT: |
add95ac3 | 58 | wxLogError(_("GIF: error in GIF image format.")); |
8141573c GRG |
59 | break; |
60 | case wxGIF_MEMERR: | |
add95ac3 | 61 | wxLogError(_("GIF: not enough memory.")); |
8141573c GRG |
62 | break; |
63 | default: | |
add95ac3 | 64 | wxLogError(_("GIF: unknown error!!!")); |
8141573c | 65 | break; |
e08e239b GRG |
66 | } |
67 | } | |
b59bf2db JS |
68 | delete decod; |
69 | return FALSE; | |
70 | } | |
b59bf2db | 71 | |
8141573c GRG |
72 | if ((error == wxGIF_TRUNCATED) && verbose) |
73 | { | |
add95ac3 | 74 | wxLogError(_("GIF: data stream seems to be truncated.")); |
8141573c GRG |
75 | /* go on; image data is OK */ |
76 | } | |
77 | ||
464122b6 | 78 | ok = decod->ConvertToImage(image); |
464122b6 | 79 | delete decod; |
0141d2c9 | 80 | |
464122b6 | 81 | return ok; |
b59bf2db JS |
82 | } |
83 | ||
74e3313b | 84 | bool wxGIFHandler::SaveFile( wxImage * WXUNUSED(image), |
deb2fec0 | 85 | wxOutputStream& WXUNUSED(stream), bool verbose ) |
b59bf2db | 86 | { |
8a68d8b6 | 87 | if (verbose) |
add95ac3 | 88 | wxLogDebug(wxT("GIF: the handler is read-only!!")); |
8a68d8b6 | 89 | |
b59bf2db JS |
90 | return FALSE; |
91 | } | |
92 | ||
995612e2 | 93 | bool wxGIFHandler::DoCanRead( wxInputStream& stream ) |
0828c087 | 94 | { |
bd2fdefe GRG |
95 | wxGIFDecoder *decod; |
96 | bool ok; | |
97 | ||
98 | decod = new wxGIFDecoder(&stream); | |
99 | ok = decod->CanRead(); | |
bd2fdefe | 100 | delete decod; |
0141d2c9 | 101 | |
bd2fdefe | 102 | return ok; |
0828c087 VS |
103 | } |
104 | ||
9ab6ee85 GRG |
105 | #endif // wxUSE_STREAMS |
106 | ||
107 | #endif // wxUSE_GIF |