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c96ea657 | 1 | ///////////////////////////////////////////////////////////////////////////// |
8898456d | 2 | // Name: src/common/imagxpm.cpp |
c96ea657 | 3 | // Purpose: wxXPMHandler |
424f5e27 | 4 | // Author: Vaclav Slavik, Robert Roebling |
c96ea657 VS |
5 | // RCS-ID: $Id$ |
6 | // Copyright: (c) 2001 Vaclav Slavik | |
65571936 | 7 | // Licence: wxWindows licence |
c96ea657 VS |
8 | ///////////////////////////////////////////////////////////////////////////// |
9 | ||
10 | /* | |
11 | ||
12 | This file is partially based on source code of ImageMagick by John Cristy. Its | |
13 | license is as follows: | |
14 | ||
15 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% | |
16 | % % | |
17 | % % | |
18 | % % | |
19 | % X X PPPP M M % | |
20 | % X X P P MM MM % | |
21 | % X PPPP M M M % | |
22 | % X X P M M % | |
23 | % X X P M M % | |
24 | % % | |
25 | % % | |
26 | % Read/Write ImageMagick Image Format. % | |
27 | % % | |
28 | % % | |
29 | % Software Design % | |
30 | % John Cristy % | |
31 | % July 1992 % | |
32 | % % | |
33 | % % | |
34 | % Copyright (C) 2001 ImageMagick Studio, a non-profit organization dedicated % | |
35 | % to making software imaging solutions freely available. % | |
36 | % % | |
37 | % Permission is hereby granted, free of charge, to any person obtaining a % | |
38 | % copy of this software and associated documentation files ("ImageMagick"), % | |
39 | % to deal in ImageMagick without restriction, including without limitation % | |
40 | % the rights to use, copy, modify, merge, publish, distribute, sublicense, % | |
41 | % and/or sell copies of ImageMagick, and to permit persons to whom the % | |
42 | % ImageMagick is furnished to do so, subject to the following conditions: % | |
43 | % % | |
44 | % The above copyright notice and this permission notice shall be included in % | |
45 | % all copies or substantial portions of ImageMagick. % | |
46 | % % | |
47 | % The software is provided "as is", without warranty of any kind, express or % | |
48 | % implied, including but not limited to the warranties of merchantability, % | |
49 | % fitness for a particular purpose and noninfringement. In no event shall % | |
50 | % ImageMagick Studio be liable for any claim, damages or other liability, % | |
51 | % whether in an action of contract, tort or otherwise, arising from, out of % | |
52 | % or in connection with ImageMagick or the use or other dealings in % | |
53 | % ImageMagick. % | |
54 | % % | |
55 | % Except as contained in this notice, the name of the ImageMagick Studio % | |
56 | % shall not be used in advertising or otherwise to promote the sale, use or % | |
57 | % other dealings in ImageMagick without prior written authorization from the % | |
58 | % ImageMagick Studio. % | |
59 | % % | |
60 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% | |
61 | % | |
62 | % | |
63 | */ | |
64 | ||
c96ea657 VS |
65 | // For compilers that support precompilation, includes "wx.h". |
66 | #include "wx/wxprec.h" | |
67 | ||
68 | #ifdef __BORLANDC__ | |
8898456d | 69 | #pragma hdrstop |
c96ea657 VS |
70 | #endif |
71 | ||
8898456d WS |
72 | #if wxUSE_XPM |
73 | ||
c96ea657 | 74 | #ifndef WX_PRECOMP |
8898456d WS |
75 | #include "wx/log.h" |
76 | #include "wx/intl.h" | |
de6185e2 | 77 | #include "wx/utils.h" |
c96ea657 VS |
78 | #endif |
79 | ||
c96ea657 VS |
80 | #include "wx/imagxpm.h" |
81 | #include "wx/wfstream.h" | |
424f5e27 | 82 | #include "wx/xpmdecod.h" |
bd365871 | 83 | #include "wx/filename.h" |
c96ea657 VS |
84 | |
85 | IMPLEMENT_DYNAMIC_CLASS(wxXPMHandler,wxImageHandler) | |
86 | ||
87 | //----------------------------------------------------------------------------- | |
88 | // wxXPMHandler | |
89 | //----------------------------------------------------------------------------- | |
90 | ||
91 | #if wxUSE_STREAMS | |
92 | ||
33ac7e6f | 93 | bool wxXPMHandler::LoadFile(wxImage *image, |
424f5e27 | 94 | wxInputStream& stream, |
38caaa61 | 95 | bool WXUNUSED(verbose), int WXUNUSED(index)) |
c96ea657 | 96 | { |
424f5e27 VS |
97 | wxXPMDecoder decoder; |
98 | ||
99 | wxImage img = decoder.ReadFile(stream); | |
a1b806b9 | 100 | if ( !img.IsOk() ) |
7beb59f3 | 101 | return false; |
424f5e27 | 102 | *image = img; |
7beb59f3 | 103 | return true; |
c96ea657 VS |
104 | } |
105 | ||
106 | bool wxXPMHandler::SaveFile(wxImage * image, | |
33ac7e6f | 107 | wxOutputStream& stream, bool WXUNUSED(verbose)) |
c96ea657 | 108 | { |
c96ea657 VS |
109 | // 1. count colours: |
110 | #define MaxCixels 92 | |
33ac7e6f | 111 | static const char Cixel[MaxCixels+1] = |
c96ea657 VS |
112 | " .XoO+@#$%&*=-;:>,<1234567890qwertyuipasdfghjk" |
113 | "lzxcvbnmMNBVCZASDFGHJKLPIUYTREWQ!~^/()_`'][{}|"; | |
c96ea657 | 114 | int i, j, k; |
33ac7e6f | 115 | |
2eaf6433 PC |
116 | wxImageHistogram histogram; |
117 | int cols = int(image->ComputeHistogram(histogram)); | |
118 | ||
119 | int chars_per_pixel = 1; | |
c96ea657 VS |
120 | for ( k = MaxCixels; cols > k; k *= MaxCixels) |
121 | chars_per_pixel++; | |
122 | ||
7beb59f3 | 123 | // 2. write the header: |
fd94e8aa VS |
124 | wxString sName; |
125 | if ( image->HasOption(wxIMAGE_OPTION_FILENAME) ) | |
126 | { | |
bd365871 FM |
127 | wxFileName::SplitPath(image->GetOption(wxIMAGE_OPTION_FILENAME), |
128 | NULL, &sName, NULL); | |
fd94e8aa VS |
129 | sName << wxT("_xpm"); |
130 | } | |
7beb59f3 | 131 | |
8898456d | 132 | if ( !sName.empty() ) |
90e4fb5d | 133 | sName = wxString(wxT("/* XPM */\nstatic const char *")) + sName; |
7beb59f3 | 134 | else |
90e4fb5d | 135 | sName = wxT("/* XPM */\nstatic const char *xpm_data"); |
2b5f62a0 | 136 | stream.Write( (const char*) sName.ToAscii(), sName.Len() ); |
fd94e8aa | 137 | |
ffe107c8 | 138 | char tmpbuf[200]; |
2ef44ad5 | 139 | // VS: 200b is safe upper bound for anything produced by sprintf below |
fd94e8aa | 140 | // (<101 bytes the string, neither %i can expand into more than 10 chars) |
7beb59f3 | 141 | sprintf(tmpbuf, |
fd94e8aa | 142 | "[] = {\n" |
c96ea657 | 143 | "/* columns rows colors chars-per-pixel */\n" |
33ac7e6f | 144 | "\"%i %i %i %i\",\n", |
c96ea657 | 145 | image->GetWidth(), image->GetHeight(), cols, chars_per_pixel); |
ffe107c8 | 146 | stream.Write(tmpbuf, strlen(tmpbuf)); |
c96ea657 VS |
147 | |
148 | // 3. create color symbols table: | |
c96ea657 VS |
149 | char *symbols_data = new char[cols * (chars_per_pixel+1)]; |
150 | char **symbols = new char*[cols]; | |
151 | ||
152 | // 2a. find mask colour: | |
952ae1e8 | 153 | unsigned long mask_key = 0x1000000 /*invalid RGB value*/; |
c96ea657 VS |
154 | if (image->HasMask()) |
155 | mask_key = (image->GetMaskRed() << 16) | | |
156 | (image->GetMaskGreen() << 8) | image->GetMaskBlue(); | |
33ac7e6f | 157 | |
c96ea657 | 158 | // 2b. generate colour table: |
952ae1e8 | 159 | for (wxImageHistogram::iterator entry = histogram.begin(); |
60d8e886 | 160 | entry != histogram.end(); ++entry ) |
c96ea657 | 161 | { |
952ae1e8 | 162 | unsigned long index = entry->second.index; |
c96ea657 VS |
163 | symbols[index] = symbols_data + index * (chars_per_pixel+1); |
164 | char *sym = symbols[index]; | |
165 | ||
0200fb27 | 166 | for (j = 0; j < chars_per_pixel; j++) |
c96ea657 | 167 | { |
0200fb27 PC |
168 | sym[j] = Cixel[index % MaxCixels]; |
169 | index /= MaxCixels; | |
c96ea657 VS |
170 | } |
171 | sym[j] = '\0'; | |
172 | ||
952ae1e8 | 173 | unsigned long key = entry->first; |
c96ea657 VS |
174 | |
175 | if (key == 0) | |
2b5f62a0 | 176 | sprintf( tmpbuf, "\"%s c Black\",\n", sym); |
c96ea657 | 177 | else if (key == mask_key) |
2b5f62a0 | 178 | sprintf( tmpbuf, "\"%s c None\",\n", sym); |
c96ea657 | 179 | else |
2b5f62a0 | 180 | { |
2eaf6433 PC |
181 | wxByte r = wxByte(key >> 16); |
182 | wxByte g = wxByte(key >> 8); | |
183 | wxByte b = wxByte(key); | |
184 | sprintf(tmpbuf, "\"%s c #%02X%02X%02X\",\n", sym, r, g, b); | |
2b5f62a0 VZ |
185 | } |
186 | stream.Write( tmpbuf, strlen(tmpbuf) ); | |
c96ea657 VS |
187 | } |
188 | ||
2eaf6433 | 189 | stream.Write("/* pixels */\n", 13); |
c96ea657 VS |
190 | |
191 | unsigned char *data = image->GetData(); | |
192 | for (j = 0; j < image->GetHeight(); j++) | |
193 | { | |
2eaf6433 | 194 | char tmp_c; |
c96ea657 VS |
195 | tmp_c = '\"'; stream.Write(&tmp_c, 1); |
196 | for (i = 0; i < image->GetWidth(); i++, data += 3) | |
197 | { | |
198 | unsigned long key = (data[0] << 16) | (data[1] << 8) | (data[2]); | |
952ae1e8 | 199 | stream.Write(symbols[histogram[key].index], chars_per_pixel); |
c96ea657 VS |
200 | } |
201 | tmp_c = '\"'; stream.Write(&tmp_c, 1); | |
202 | if ( j + 1 < image->GetHeight() ) | |
203 | { | |
204 | tmp_c = ','; stream.Write(&tmp_c, 1); | |
205 | } | |
206 | tmp_c = '\n'; stream.Write(&tmp_c, 1); | |
207 | } | |
2eaf6433 | 208 | stream.Write("};\n", 3 ); |
33ac7e6f | 209 | |
2ef44ad5 | 210 | // Clean up: |
c96ea657 VS |
211 | delete[] symbols; |
212 | delete[] symbols_data; | |
213 | ||
7beb59f3 | 214 | return true; |
c96ea657 VS |
215 | } |
216 | ||
217 | bool wxXPMHandler::DoCanRead(wxInputStream& stream) | |
218 | { | |
424f5e27 VS |
219 | wxXPMDecoder decoder; |
220 | return decoder.CanRead(stream); | |
8faef7cc | 221 | // it's ok to modify the stream position here |
c96ea657 VS |
222 | } |
223 | ||
224 | #endif // wxUSE_STREAMS | |
225 | ||
c67d6888 | 226 | #endif // wxUSE_XPM |