Commit | Line | Data |
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e65ed37a | 1 | ///////////////////////////////////////////////////////////////////////////// |
8898456d | 2 | // Name: src/common/imagbmp.cpp |
05813ada VS |
3 | // Purpose: wxImage BMP,ICO and CUR handlers |
4 | // Author: Robert Roebling, Chris Elliott | |
e65ed37a | 5 | // RCS-ID: $Id$ |
05813ada | 6 | // Copyright: (c) Robert Roebling, Chris Elliott |
65571936 | 7 | // Licence: wxWindows licence |
e65ed37a RR |
8 | ///////////////////////////////////////////////////////////////////////////// |
9 | ||
e65ed37a RR |
10 | // For compilers that support precompilation, includes "wx.h". |
11 | #include "wx/wxprec.h" | |
12 | ||
13 | #ifdef __BORLANDC__ | |
8898456d | 14 | #pragma hdrstop |
e65ed37a RR |
15 | #endif |
16 | ||
e30285ab | 17 | #if wxUSE_IMAGE |
c96ea657 | 18 | |
5ff14574 PC |
19 | #include "wx/imagbmp.h" |
20 | ||
8898456d | 21 | #ifndef WX_PRECOMP |
57bd4c60 WS |
22 | #ifdef __WXMSW__ |
23 | #include "wx/msw/wrapwin.h" | |
24 | #endif | |
8898456d WS |
25 | #include "wx/log.h" |
26 | #include "wx/app.h" | |
0bca0373 | 27 | #include "wx/bitmap.h" |
5ff14574 PC |
28 | #include "wx/palette.h" |
29 | #include "wx/intl.h" | |
37ba70a5 | 30 | #include "wx/math.h" |
8898456d WS |
31 | #endif |
32 | ||
e65ed37a RR |
33 | #include "wx/filefn.h" |
34 | #include "wx/wfstream.h" | |
1971d23c | 35 | #include "wx/quantize.h" |
ef5571c6 | 36 | #include "wx/scopeguard.h" |
72045d57 | 37 | #include "wx/anidecod.h" |
e65ed37a RR |
38 | |
39 | // For memcpy | |
40 | #include <string.h> | |
41 | ||
b4c47016 DS |
42 | // ---------------------------------------------------------------------------- |
43 | // private functions | |
44 | // ---------------------------------------------------------------------------- | |
45 | ||
46 | #if wxUSE_ICO_CUR | |
47 | ||
48 | static bool CanReadICOOrCUR(wxInputStream *stream, wxUint16 resourceType); | |
49 | ||
50 | #endif // wxUSE_ICO_CUR | |
51 | ||
e65ed37a | 52 | //----------------------------------------------------------------------------- |
05813ada | 53 | // wxBMPHandler |
e65ed37a RR |
54 | //----------------------------------------------------------------------------- |
55 | ||
e65ed37a | 56 | IMPLEMENT_DYNAMIC_CLASS(wxBMPHandler,wxImageHandler) |
e65ed37a | 57 | |
e30285ab VZ |
58 | #if wxUSE_STREAMS |
59 | ||
37b83ca6 | 60 | #ifndef BI_RGB |
35b463c0 VZ |
61 | #define BI_RGB 0 |
62 | #endif | |
63 | ||
64 | #ifndef BI_RLE8 | |
37b83ca6 | 65 | #define BI_RLE8 1 |
35b463c0 VZ |
66 | #endif |
67 | ||
68 | #ifndef BI_RLE4 | |
37b83ca6 VS |
69 | #define BI_RLE4 2 |
70 | #endif | |
71 | ||
72 | #ifndef BI_BITFIELDS | |
73 | #define BI_BITFIELDS 3 | |
74 | #endif | |
75 | ||
76 | #define poffset (line * width * 3 + column * 3) | |
77 | ||
f6bcfd97 BP |
78 | bool wxBMPHandler::SaveFile(wxImage *image, |
79 | wxOutputStream& stream, | |
80 | bool verbose) | |
574c939e | 81 | { |
7beb59f3 | 82 | return SaveDib(image, stream, verbose, true/*IsBmp*/, false/*IsMask*/); |
37b83ca6 VS |
83 | } |
84 | ||
85 | bool wxBMPHandler::SaveDib(wxImage *image, | |
05813ada VS |
86 | wxOutputStream& stream, |
87 | bool verbose, | |
88 | bool IsBmp, | |
89 | bool IsMask) | |
37b83ca6 | 90 | |
f6bcfd97 | 91 | { |
9a83f860 | 92 | wxCHECK_MSG( image, false, wxT("invalid pointer in wxBMPHandler::SaveFile") ); |
f6bcfd97 | 93 | |
a1b806b9 | 94 | if ( !image->IsOk() ) |
f6bcfd97 | 95 | { |
574c939e | 96 | if ( verbose ) |
af588446 | 97 | { |
05813ada | 98 | wxLogError(_("BMP: Couldn't save invalid image.")); |
af588446 | 99 | } |
7beb59f3 | 100 | return false; |
f6bcfd97 BP |
101 | } |
102 | ||
1971d23c VZ |
103 | // get the format of the BMP file to save, else use 24bpp |
104 | unsigned format = wxBMP_24BPP; | |
fd94e8aa VS |
105 | if ( image->HasOption(wxIMAGE_OPTION_BMP_FORMAT) ) |
106 | format = image->GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT); | |
1971d23c | 107 | |
574c939e | 108 | wxUint16 bpp; // # of bits per pixel |
1971d23c VZ |
109 | int palette_size; // # of color map entries, ie. 2^bpp colors |
110 | ||
111 | // set the bpp and appropriate palette_size, and do additional checks | |
05813ada | 112 | if ( (format == wxBMP_1BPP) || (format == wxBMP_1BPP_BW) ) |
1971d23c VZ |
113 | { |
114 | bpp = 1; | |
115 | palette_size = 2; | |
116 | } | |
05813ada | 117 | else if ( format == wxBMP_4BPP ) |
1971d23c VZ |
118 | { |
119 | bpp = 4; | |
120 | palette_size = 16; | |
121 | } | |
05813ada VS |
122 | else if ( (format == wxBMP_8BPP) || (format == wxBMP_8BPP_GREY) || |
123 | (format == wxBMP_8BPP_RED) || (format == wxBMP_8BPP_PALETTE) ) | |
1971d23c VZ |
124 | { |
125 | // need to set a wxPalette to use this, HOW TO CHECK IF VALID, SIZE? | |
b11e8fb6 VZ |
126 | if ((format == wxBMP_8BPP_PALETTE) |
127 | #if wxUSE_PALETTE | |
128 | && !image->HasPalette() | |
129 | #endif // wxUSE_PALETTE | |
130 | ) | |
1971d23c | 131 | { |
05813ada | 132 | if ( verbose ) |
af588446 | 133 | { |
dc9b623b | 134 | wxLogError(_("BMP: wxImage doesn't have own wxPalette.")); |
af588446 | 135 | } |
7beb59f3 | 136 | return false; |
1971d23c VZ |
137 | } |
138 | bpp = 8; | |
139 | palette_size = 256; | |
140 | } | |
141 | else // you get 24bpp | |
142 | { | |
143 | format = wxBMP_24BPP; | |
144 | bpp = 24; | |
145 | palette_size = 0; | |
146 | } | |
147 | ||
f6bcfd97 | 148 | unsigned width = image->GetWidth(); |
2a6545a5 DS |
149 | unsigned row_padding = (4 - ((width * bpp + 7) / 8) % 4) % 4; // # bytes to pad to dword |
150 | unsigned row_width = (width * bpp + 7) / 8 + row_padding; // # of bytes per row | |
1971d23c | 151 | |
f6bcfd97 BP |
152 | struct |
153 | { | |
154 | // BitmapHeader: | |
155 | wxUint16 magic; // format magic, always 'BM' | |
156 | wxUint32 filesize; // total file size, inc. headers | |
157 | wxUint32 reserved; // for future use | |
158 | wxUint32 data_offset; // image data offset in the file | |
33ac7e6f | 159 | |
f6bcfd97 BP |
160 | // BitmapInfoHeader: |
161 | wxUint32 bih_size; // 2nd part's size | |
162 | wxUint32 width, height; // bitmap's dimensions | |
163 | wxUint16 planes; // num of planes | |
164 | wxUint16 bpp; // bits per pixel | |
165 | wxUint32 compression; // compression method | |
166 | wxUint32 size_of_bmp; // size of the bitmap | |
37ba70a5 | 167 | wxUint32 h_res, v_res; // image resolution in pixels-per-meter |
f6bcfd97 BP |
168 | wxUint32 num_clrs; // number of colors used |
169 | wxUint32 num_signif_clrs;// number of significant colors | |
170 | } hdr; | |
1971d23c | 171 | |
f6bcfd97 BP |
172 | wxUint32 hdr_size = 14/*BitmapHeader*/ + 40/*BitmapInfoHeader*/; |
173 | ||
174 | hdr.magic = wxUINT16_SWAP_ON_BE(0x4D42/*'BM'*/); | |
1971d23c VZ |
175 | hdr.filesize = wxUINT32_SWAP_ON_BE( hdr_size + palette_size*4 + |
176 | row_width * image->GetHeight() ); | |
f6bcfd97 | 177 | hdr.reserved = 0; |
1971d23c | 178 | hdr.data_offset = wxUINT32_SWAP_ON_BE(hdr_size + palette_size*4); |
33ac7e6f | 179 | |
f6bcfd97 BP |
180 | hdr.bih_size = wxUINT32_SWAP_ON_BE(hdr_size - 14); |
181 | hdr.width = wxUINT32_SWAP_ON_BE(image->GetWidth()); | |
05813ada | 182 | if ( IsBmp ) |
37b83ca6 | 183 | { |
05813ada | 184 | hdr.height = wxUINT32_SWAP_ON_BE(image->GetHeight()); |
37b83ca6 VS |
185 | } |
186 | else | |
187 | { | |
188 | hdr.height = wxUINT32_SWAP_ON_BE(2 * image->GetHeight()); | |
05813ada | 189 | } |
f6bcfd97 | 190 | hdr.planes = wxUINT16_SWAP_ON_BE(1); // always 1 plane |
1971d23c | 191 | hdr.bpp = wxUINT16_SWAP_ON_BE(bpp); |
f6bcfd97 | 192 | hdr.compression = 0; // RGB uncompressed |
33ac7e6f | 193 | hdr.size_of_bmp = wxUINT32_SWAP_ON_BE(row_width * image->GetHeight()); |
37ba70a5 VZ |
194 | |
195 | // get the resolution from the image options or fall back to 72dpi standard | |
196 | // for the BMP format if not specified | |
fe7f0a59 VZ |
197 | int hres, vres; |
198 | switch ( GetResolutionFromOptions(*image, &hres, &vres) ) | |
37ba70a5 VZ |
199 | { |
200 | default: | |
9a83f860 | 201 | wxFAIL_MSG( wxT("unexpected image resolution units") ); |
37ba70a5 VZ |
202 | // fall through |
203 | ||
204 | case wxIMAGE_RESOLUTION_NONE: | |
205 | hres = | |
206 | vres = 72; | |
207 | // fall through to convert it to correct units | |
208 | ||
209 | case wxIMAGE_RESOLUTION_INCHES: | |
210 | // convert resolution in inches to resolution in centimeters | |
fe7f0a59 VZ |
211 | hres = (int)(10*mm2inches*hres); |
212 | vres = (int)(10*mm2inches*vres); | |
37ba70a5 VZ |
213 | // fall through to convert it to resolution in meters |
214 | ||
215 | case wxIMAGE_RESOLUTION_CM: | |
216 | // convert resolution in centimeters to resolution in meters | |
217 | hres *= 100; | |
218 | vres *= 100; | |
219 | break; | |
220 | } | |
221 | ||
222 | hdr.h_res = wxUINT32_SWAP_ON_BE(hres); | |
223 | hdr.v_res = wxUINT32_SWAP_ON_BE(vres); | |
1971d23c VZ |
224 | hdr.num_clrs = wxUINT32_SWAP_ON_BE(palette_size); // # colors in colormap |
225 | hdr.num_signif_clrs = 0; // all colors are significant | |
574c939e | 226 | |
05813ada | 227 | if ( IsBmp ) |
37b83ca6 | 228 | { |
05813ada VS |
229 | if (// VS: looks ugly but compilers tend to do ugly things with structs, |
230 | // like aligning hdr.filesize's ofset to dword :( | |
231 | // VZ: we should add padding then... | |
232 | !stream.Write(&hdr.magic, 2) || | |
233 | !stream.Write(&hdr.filesize, 4) || | |
234 | !stream.Write(&hdr.reserved, 4) || | |
574c939e | 235 | !stream.Write(&hdr.data_offset, 4) |
05813ada VS |
236 | ) |
237 | { | |
238 | if (verbose) | |
af588446 | 239 | { |
05813ada | 240 | wxLogError(_("BMP: Couldn't write the file (Bitmap) header.")); |
af588446 | 241 | } |
7beb59f3 | 242 | return false; |
05813ada VS |
243 | } |
244 | } | |
245 | if ( !IsMask ) | |
f6bcfd97 | 246 | { |
05813ada VS |
247 | if ( |
248 | !stream.Write(&hdr.bih_size, 4) || | |
249 | !stream.Write(&hdr.width, 4) || | |
250 | !stream.Write(&hdr.height, 4) || | |
251 | !stream.Write(&hdr.planes, 2) || | |
252 | !stream.Write(&hdr.bpp, 2) || | |
253 | !stream.Write(&hdr.compression, 4) || | |
254 | !stream.Write(&hdr.size_of_bmp, 4) || | |
255 | !stream.Write(&hdr.h_res, 4) || | |
256 | !stream.Write(&hdr.v_res, 4) || | |
257 | !stream.Write(&hdr.num_clrs, 4) || | |
258 | !stream.Write(&hdr.num_signif_clrs, 4) | |
259 | ) | |
260 | { | |
261 | if (verbose) | |
af588446 | 262 | { |
05813ada | 263 | wxLogError(_("BMP: Couldn't write the file (BitmapInfo) header.")); |
af588446 | 264 | } |
7beb59f3 | 265 | return false; |
05813ada | 266 | } |
f6bcfd97 BP |
267 | } |
268 | ||
1971d23c VZ |
269 | wxPalette *palette = NULL; // entries for quantized images |
270 | wxUint8 *rgbquad = NULL; // for the RGBQUAD bytes for the colormap | |
271 | wxImage *q_image = NULL; // destination for quantized image | |
272 | ||
273 | // if <24bpp use quantization to reduce colors for *some* of the formats | |
274 | if ( (format == wxBMP_1BPP) || (format == wxBMP_4BPP) || | |
05813ada | 275 | (format == wxBMP_8BPP) || (format == wxBMP_8BPP_PALETTE) ) |
1971d23c VZ |
276 | { |
277 | // make a new palette and quantize the image | |
278 | if (format != wxBMP_8BPP_PALETTE) | |
279 | { | |
280 | q_image = new wxImage(); | |
281 | ||
282 | // I get a delete error using Quantize when desired colors > 236 | |
283 | int quantize = ((palette_size > 236) ? 236 : palette_size); | |
284 | // fill the destination too, it gives much nicer 4bpp images | |
285 | wxQuantize::Quantize( *image, *q_image, &palette, quantize, 0, | |
286 | wxQUANTIZE_FILL_DESTINATION_IMAGE ); | |
287 | } | |
288 | else | |
289 | { | |
b11e8fb6 | 290 | #if wxUSE_PALETTE |
1971d23c | 291 | palette = new wxPalette(image->GetPalette()); |
b11e8fb6 | 292 | #endif // wxUSE_PALETTE |
1971d23c VZ |
293 | } |
294 | ||
295 | int i; | |
296 | unsigned char r, g, b; | |
297 | rgbquad = new wxUint8 [palette_size*4]; | |
298 | ||
05813ada | 299 | for (i = 0; i < palette_size; i++) |
1971d23c | 300 | { |
b11e8fb6 | 301 | #if wxUSE_PALETTE |
05813ada | 302 | if ( !palette->GetRGB(i, &r, &g, &b) ) |
b11e8fb6 VZ |
303 | #endif // wxUSE_PALETTE |
304 | r = g = b = 0; | |
1971d23c VZ |
305 | |
306 | rgbquad[i*4] = b; | |
307 | rgbquad[i*4+1] = g; | |
308 | rgbquad[i*4+2] = r; | |
309 | rgbquad[i*4+3] = 0; | |
310 | } | |
311 | } | |
312 | // make a 256 entry greyscale colormap or 2 entry black & white | |
05813ada VS |
313 | else if ( (format == wxBMP_8BPP_GREY) || (format == wxBMP_8BPP_RED) || |
314 | (format == wxBMP_1BPP_BW) ) | |
1971d23c | 315 | { |
1971d23c VZ |
316 | rgbquad = new wxUint8 [palette_size*4]; |
317 | ||
0ce5a3a8 | 318 | for ( int i = 0; i < palette_size; i++ ) |
1971d23c | 319 | { |
0ce5a3a8 | 320 | // if 1BPP_BW then the value should be either 0 or 255 |
11846af3 | 321 | wxUint8 c = (wxUint8)((i > 0) && (format == wxBMP_1BPP_BW) ? 255 : i); |
0ce5a3a8 VZ |
322 | |
323 | rgbquad[i*4] = | |
324 | rgbquad[i*4+1] = | |
325 | rgbquad[i*4+2] = c; | |
1971d23c VZ |
326 | rgbquad[i*4+3] = 0; |
327 | } | |
328 | } | |
329 | ||
330 | // if the colormap was made, then it needs to be written | |
331 | if (rgbquad) | |
332 | { | |
05813ada | 333 | if ( !IsMask ) |
1971d23c | 334 | { |
05813ada VS |
335 | if ( !stream.Write(rgbquad, palette_size*4) ) |
336 | { | |
337 | if (verbose) | |
af588446 | 338 | { |
05813ada | 339 | wxLogError(_("BMP: Couldn't write RGB color map.")); |
af588446 | 340 | } |
05813ada | 341 | delete[] rgbquad; |
b11e8fb6 | 342 | #if wxUSE_PALETTE |
05813ada | 343 | delete palette; |
b11e8fb6 | 344 | #endif // wxUSE_PALETTE |
05813ada | 345 | delete q_image; |
7beb59f3 | 346 | return false; |
05813ada VS |
347 | } |
348 | } | |
1971d23c VZ |
349 | delete []rgbquad; |
350 | } | |
351 | ||
352 | // pointer to the image data, use quantized if available | |
f6bcfd97 | 353 | wxUint8 *data = (wxUint8*) image->GetData(); |
a1b806b9 | 354 | if (q_image) if (q_image->IsOk()) data = (wxUint8*) q_image->GetData(); |
1971d23c | 355 | |
f6bcfd97 | 356 | wxUint8 *buffer = new wxUint8[row_width]; |
f6bcfd97 BP |
357 | memset(buffer, 0, row_width); |
358 | int y; unsigned x; | |
1971d23c | 359 | long int pixel; |
f6bcfd97 | 360 | |
05813ada | 361 | for (y = image->GetHeight() -1; y >= 0; y--) |
f6bcfd97 | 362 | { |
05813ada | 363 | if ( format == wxBMP_24BPP ) // 3 bytes per pixel red,green,blue |
1971d23c | 364 | { |
05813ada | 365 | for ( x = 0; x < width; x++ ) |
1971d23c VZ |
366 | { |
367 | pixel = 3*(y*width + x); | |
368 | ||
369 | buffer[3*x ] = data[pixel+2]; | |
370 | buffer[3*x + 1] = data[pixel+1]; | |
371 | buffer[3*x + 2] = data[pixel]; | |
372 | } | |
373 | } | |
374 | else if ((format == wxBMP_8BPP) || // 1 byte per pixel in color | |
375 | (format == wxBMP_8BPP_PALETTE)) | |
376 | { | |
377 | for (x = 0; x < width; x++) | |
378 | { | |
379 | pixel = 3*(y*width + x); | |
b11e8fb6 | 380 | #if wxUSE_PALETTE |
9a431f4d WS |
381 | buffer[x] = (wxUint8)palette->GetPixel( data[pixel], |
382 | data[pixel+1], | |
383 | data[pixel+2] ); | |
b11e8fb6 VZ |
384 | #else |
385 | // FIXME: what should this be? use some std palette maybe? | |
386 | buffer[x] = 0; | |
387 | #endif // wxUSE_PALETTE | |
1971d23c VZ |
388 | } |
389 | } | |
05813ada | 390 | else if ( format == wxBMP_8BPP_GREY ) // 1 byte per pix, rgb ave to grey |
1971d23c VZ |
391 | { |
392 | for (x = 0; x < width; x++) | |
393 | { | |
394 | pixel = 3*(y*width + x); | |
395 | buffer[x] = (wxUint8)(.299*data[pixel] + | |
396 | .587*data[pixel+1] + | |
397 | .114*data[pixel+2]); | |
398 | } | |
399 | } | |
05813ada | 400 | else if ( format == wxBMP_8BPP_RED ) // 1 byte per pixel, red as greys |
f6bcfd97 | 401 | { |
1971d23c VZ |
402 | for (x = 0; x < width; x++) |
403 | { | |
404 | buffer[x] = (wxUint8)data[3*(y*width + x)]; | |
405 | } | |
406 | } | |
05813ada | 407 | else if ( format == wxBMP_4BPP ) // 4 bpp in color |
1971d23c VZ |
408 | { |
409 | for (x = 0; x < width; x+=2) | |
410 | { | |
411 | pixel = 3*(y*width + x); | |
412 | ||
413 | // fill buffer, ignore if > width | |
b11e8fb6 | 414 | #if wxUSE_PALETTE |
9a431f4d | 415 | buffer[x/2] = (wxUint8)( |
b11e8fb6 VZ |
416 | ((wxUint8)palette->GetPixel(data[pixel], |
417 | data[pixel+1], | |
418 | data[pixel+2]) << 4) | | |
419 | (((x+1) > width) | |
420 | ? 0 | |
421 | : ((wxUint8)palette->GetPixel(data[pixel+3], | |
422 | data[pixel+4], | |
9a431f4d | 423 | data[pixel+5]) )) ); |
b11e8fb6 VZ |
424 | #else |
425 | // FIXME: what should this be? use some std palette maybe? | |
426 | buffer[x/2] = 0; | |
427 | #endif // wxUSE_PALETTE | |
1971d23c VZ |
428 | } |
429 | } | |
05813ada | 430 | else if ( format == wxBMP_1BPP ) // 1 bpp in "color" |
1971d23c VZ |
431 | { |
432 | for (x = 0; x < width; x+=8) | |
433 | { | |
434 | pixel = 3*(y*width + x); | |
435 | ||
b11e8fb6 | 436 | #if wxUSE_PALETTE |
9a431f4d WS |
437 | buffer[x/8] = (wxUint8)( |
438 | ((wxUint8)palette->GetPixel(data[pixel], data[pixel+1], data[pixel+2]) << 7) | | |
1971d23c VZ |
439 | (((x+1) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+3], data[pixel+4], data[pixel+5]) << 6)) | |
440 | (((x+2) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+6], data[pixel+7], data[pixel+8]) << 5)) | | |
441 | (((x+3) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+9], data[pixel+10], data[pixel+11]) << 4)) | | |
442 | (((x+4) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+12], data[pixel+13], data[pixel+14]) << 3)) | | |
443 | (((x+5) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+15], data[pixel+16], data[pixel+17]) << 2)) | | |
444 | (((x+6) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+18], data[pixel+19], data[pixel+20]) << 1)) | | |
9a431f4d | 445 | (((x+7) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+21], data[pixel+22], data[pixel+23]) )) ); |
b11e8fb6 VZ |
446 | #else |
447 | // FIXME: what should this be? use some std palette maybe? | |
448 | buffer[x/8] = 0; | |
449 | #endif // wxUSE_PALETTE | |
1971d23c VZ |
450 | } |
451 | } | |
05813ada | 452 | else if ( format == wxBMP_1BPP_BW ) // 1 bpp B&W colormap from red color ONLY |
1971d23c VZ |
453 | { |
454 | for (x = 0; x < width; x+=8) | |
455 | { | |
456 | pixel = 3*(y*width + x); | |
457 | ||
9a431f4d | 458 | buffer[x/8] = (wxUint8)( |
05813ada VS |
459 | (((wxUint8)(data[pixel] /128.)) << 7) | |
460 | (((x+1) > width) ? 0 : (((wxUint8)(data[pixel+3] /128.)) << 6)) | | |
461 | (((x+2) > width) ? 0 : (((wxUint8)(data[pixel+6] /128.)) << 5)) | | |
462 | (((x+3) > width) ? 0 : (((wxUint8)(data[pixel+9] /128.)) << 4)) | | |
463 | (((x+4) > width) ? 0 : (((wxUint8)(data[pixel+12]/128.)) << 3)) | | |
464 | (((x+5) > width) ? 0 : (((wxUint8)(data[pixel+15]/128.)) << 2)) | | |
465 | (((x+6) > width) ? 0 : (((wxUint8)(data[pixel+18]/128.)) << 1)) | | |
9a431f4d | 466 | (((x+7) > width) ? 0 : (((wxUint8)(data[pixel+21]/128.)) )) ); |
1971d23c | 467 | } |
f6bcfd97 | 468 | } |
33ac7e6f | 469 | |
05813ada | 470 | if ( !stream.Write(buffer, row_width) ) |
f6bcfd97 BP |
471 | { |
472 | if (verbose) | |
af588446 | 473 | { |
f6bcfd97 | 474 | wxLogError(_("BMP: Couldn't write data.")); |
af588446 | 475 | } |
f6bcfd97 | 476 | delete[] buffer; |
b11e8fb6 VZ |
477 | #if wxUSE_PALETTE |
478 | delete palette; | |
479 | #endif // wxUSE_PALETTE | |
480 | delete q_image; | |
7beb59f3 | 481 | return false; |
f6bcfd97 BP |
482 | } |
483 | } | |
484 | delete[] buffer; | |
b11e8fb6 VZ |
485 | #if wxUSE_PALETTE |
486 | delete palette; | |
487 | #endif // wxUSE_PALETTE | |
488 | delete q_image; | |
f6bcfd97 | 489 | |
7beb59f3 | 490 | return true; |
f6bcfd97 BP |
491 | } |
492 | ||
493 | ||
ef5571c6 | 494 | struct BMPPalette |
05813ada | 495 | { |
ef5571c6 VZ |
496 | static void Free(BMPPalette* pal) { delete [] pal; } |
497 | ||
05813ada | 498 | unsigned char r, g, b; |
ef5571c6 | 499 | }; |
f6bcfd97 | 500 | |
574c939e | 501 | bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height, |
05813ada | 502 | int bpp, int ncolors, int comp, |
1b941f2d | 503 | wxFileOffset bmpOffset, wxInputStream& stream, |
05813ada VS |
504 | bool verbose, bool IsBmp, bool hasPalette) |
505 | { | |
55a35cb0 VZ |
506 | wxInt32 aDword, rmask = 0, gmask = 0, bmask = 0, amask = 0; |
507 | int rshift = 0, gshift = 0, bshift = 0, ashift = 0; | |
d8defde6 | 508 | int rbits = 0, gbits = 0, bbits = 0; |
52b64b0a RR |
509 | wxInt32 dbuf[4]; |
510 | wxInt8 bbuf[4]; | |
511 | wxUint8 aByte; | |
512 | wxUint16 aWord; | |
31528cd3 | 513 | |
05813ada | 514 | // allocate space for palette if needed: |
ef5571c6 | 515 | BMPPalette *cmap; |
31528cd3 | 516 | |
05813ada | 517 | if ( bpp < 16 ) |
e65ed37a | 518 | { |
ef5571c6 | 519 | cmap = new BMPPalette[ncolors]; |
05813ada | 520 | if ( !cmap ) |
e65ed37a | 521 | { |
58c837a4 | 522 | if (verbose) |
af588446 | 523 | { |
05813ada | 524 | wxLogError(_("BMP: Couldn't allocate memory.")); |
af588446 | 525 | } |
7beb59f3 | 526 | return false; |
e65ed37a RR |
527 | } |
528 | } | |
ef5571c6 VZ |
529 | else // no palette |
530 | { | |
e65ed37a | 531 | cmap = NULL; |
ef5571c6 VZ |
532 | } |
533 | ||
534 | wxON_BLOCK_EXIT1(&BMPPalette::Free, cmap); | |
e65ed37a | 535 | |
d06c3098 DS |
536 | bool isUpsideDown = true; |
537 | ||
538 | if (height < 0) | |
539 | { | |
540 | isUpsideDown = false; | |
541 | height = -height; | |
542 | } | |
543 | ||
05813ada | 544 | // destroy existing here instead of: |
52b64b0a | 545 | image->Destroy(); |
05813ada | 546 | image->Create(width, height); |
574c939e | 547 | |
e65ed37a | 548 | unsigned char *ptr = image->GetData(); |
05813ada VS |
549 | |
550 | if ( !ptr ) | |
e65ed37a | 551 | { |
05813ada | 552 | if ( verbose ) |
af588446 | 553 | { |
05813ada | 554 | wxLogError( _("BMP: Couldn't allocate memory.") ); |
af588446 | 555 | } |
7beb59f3 | 556 | return false; |
e65ed37a | 557 | } |
05813ada | 558 | |
55a35cb0 VZ |
559 | unsigned char *alpha; |
560 | if ( bpp == 32 ) | |
561 | { | |
562 | // tell the image to allocate an alpha buffer | |
563 | image->SetAlpha(); | |
564 | alpha = image->GetAlpha(); | |
565 | if ( !alpha ) | |
566 | { | |
567 | if ( verbose ) | |
af588446 | 568 | { |
55a35cb0 | 569 | wxLogError(_("BMP: Couldn't allocate memory.")); |
af588446 | 570 | } |
55a35cb0 VZ |
571 | return false; |
572 | } | |
573 | } | |
574 | else // no alpha | |
575 | { | |
576 | alpha = NULL; | |
577 | } | |
578 | ||
05813ada VS |
579 | // Reading the palette, if it exists: |
580 | if ( bpp < 16 && ncolors != 0 ) | |
e65ed37a | 581 | { |
3f4fc796 JS |
582 | unsigned char* r = new unsigned char[ncolors]; |
583 | unsigned char* g = new unsigned char[ncolors]; | |
584 | unsigned char* b = new unsigned char[ncolors]; | |
e65ed37a RR |
585 | for (int j = 0; j < ncolors; j++) |
586 | { | |
52b64b0a RR |
587 | if (hasPalette) |
588 | { | |
05813ada VS |
589 | stream.Read(bbuf, 4); |
590 | cmap[j].b = bbuf[0]; | |
591 | cmap[j].g = bbuf[1]; | |
592 | cmap[j].r = bbuf[2]; | |
593 | ||
594 | r[j] = cmap[j].r; | |
595 | g[j] = cmap[j].g; | |
596 | b[j] = cmap[j].b; | |
597 | } | |
52b64b0a RR |
598 | else |
599 | { | |
600 | //used in reading .ico file mask | |
9a431f4d WS |
601 | r[j] = cmap[j].r = |
602 | g[j] = cmap[j].g = | |
603 | b[j] = cmap[j].b = ( j ? 255 : 0 ); | |
52b64b0a RR |
604 | } |
605 | } | |
b11e8fb6 VZ |
606 | |
607 | #if wxUSE_PALETTE | |
3f4fc796 JS |
608 | // Set the palette for the wxImage |
609 | image->SetPalette(wxPalette(ncolors, r, g, b)); | |
b11e8fb6 | 610 | #endif // wxUSE_PALETTE |
3f4fc796 JS |
611 | |
612 | delete[] r; | |
613 | delete[] g; | |
614 | delete[] b; | |
e65ed37a | 615 | } |
05813ada | 616 | else if ( bpp == 16 || bpp == 32 ) |
e65ed37a | 617 | { |
05813ada | 618 | if ( comp == BI_BITFIELDS ) |
e65ed37a | 619 | { |
38e23f10 | 620 | int bit; |
05813ada | 621 | stream.Read(dbuf, 4 * 3); |
9042a017 | 622 | rmask = wxINT32_SWAP_ON_BE(dbuf[0]); |
05813ada | 623 | gmask = wxINT32_SWAP_ON_BE(dbuf[1]); |
9042a017 VZ |
624 | bmask = wxINT32_SWAP_ON_BE(dbuf[2]); |
625 | // find shift amount (Least significant bit of mask) | |
626 | for (bit = bpp-1; bit>=0; bit--) | |
e65ed37a RR |
627 | { |
628 | if (bmask & (1 << bit)) | |
629 | bshift = bit; | |
630 | if (gmask & (1 << bit)) | |
631 | gshift = bit; | |
632 | if (rmask & (1 << bit)) | |
633 | rshift = bit; | |
634 | } | |
9042a017 VZ |
635 | // Find number of bits in mask (MSB-LSB+1) |
636 | for (bit = 0; bit < bpp; bit++) | |
637 | { | |
638 | if (bmask & (1 << bit)) | |
639 | bbits = bit-bshift+1; | |
640 | if (gmask & (1 << bit)) | |
641 | gbits = bit-gshift+1; | |
642 | if (rmask & (1 << bit)) | |
643 | rbits = bit-rshift+1; | |
644 | } | |
e65ed37a | 645 | } |
05813ada | 646 | else if ( bpp == 16 ) |
e65ed37a RR |
647 | { |
648 | rmask = 0x7C00; | |
649 | gmask = 0x03E0; | |
650 | bmask = 0x001F; | |
651 | rshift = 10; | |
652 | gshift = 5; | |
653 | bshift = 0; | |
9042a017 VZ |
654 | rbits = 5; |
655 | gbits = 5; | |
656 | bbits = 5; | |
e65ed37a | 657 | } |
05813ada | 658 | else if ( bpp == 32 ) |
e65ed37a RR |
659 | { |
660 | rmask = 0x00FF0000; | |
661 | gmask = 0x0000FF00; | |
662 | bmask = 0x000000FF; | |
55a35cb0 VZ |
663 | amask = 0xFF000000; |
664 | ||
665 | ashift = 24; | |
e65ed37a RR |
666 | rshift = 16; |
667 | gshift = 8; | |
668 | bshift = 0; | |
9042a017 VZ |
669 | rbits = 8; |
670 | gbits = 8; | |
671 | bbits = 8; | |
e65ed37a RR |
672 | } |
673 | } | |
674 | ||
675 | /* | |
676 | * Reading the image data | |
677 | */ | |
05813ada | 678 | if ( IsBmp ) |
b81e4506 | 679 | { |
8faef7cc FM |
680 | // NOTE: seeking a positive amount in wxFromCurrent mode allows us to |
681 | // load even non-seekable streams (see wxInputStream::SeekI docs)! | |
38e23f10 PC |
682 | const wxFileOffset pos = stream.TellI(); |
683 | if (pos != wxInvalidOffset && bmpOffset > pos) | |
684 | if (stream.SeekI(bmpOffset - pos, wxFromCurrent) == wxInvalidOffset) | |
685 | return false; | |
b81e4506 FM |
686 | //else: icon, just carry on |
687 | } | |
52b64b0a | 688 | |
e65ed37a RR |
689 | unsigned char *data = ptr; |
690 | ||
691 | /* set the whole image to the background color */ | |
05813ada | 692 | if ( bpp < 16 && (comp == BI_RLE4 || comp == BI_RLE8) ) |
e65ed37a RR |
693 | { |
694 | for (int i = 0; i < width * height; i++) | |
695 | { | |
696 | *ptr++ = cmap[0].r; | |
697 | *ptr++ = cmap[0].g; | |
698 | *ptr++ = cmap[0].b; | |
699 | } | |
700 | ptr = data; | |
701 | } | |
31528cd3 | 702 | |
e65ed37a RR |
703 | int linesize = ((width * bpp + 31) / 32) * 4; |
704 | ||
b5131230 VZ |
705 | // flag indicating if we have any not fully transparent alpha values: this |
706 | // is used to account for the bitmaps which use 32bpp format (normally | |
707 | // meaning that they have alpha channel) but have only zeroes in it so that | |
708 | // without this hack they appear fully transparent -- and as this is | |
709 | // unlikely intentional, we consider that they don't have alpha at all in | |
710 | // this case (see #10915) | |
711 | bool hasValidAlpha = false; | |
712 | ||
d06c3098 | 713 | for ( int row = 0; row < height; row++ ) |
e65ed37a | 714 | { |
d06c3098 DS |
715 | int line = isUpsideDown ? height - 1 - row : row; |
716 | ||
e65ed37a | 717 | int linepos = 0; |
999836aa | 718 | for ( int column = 0; column < width ; ) |
e65ed37a | 719 | { |
05813ada | 720 | if ( bpp < 16 ) |
e65ed37a | 721 | { |
e65ed37a RR |
722 | linepos++; |
723 | aByte = stream.GetC(); | |
05813ada | 724 | if ( bpp == 1 ) |
e65ed37a | 725 | { |
999836aa | 726 | for (int bit = 0; bit < 8 && column < width; bit++) |
e65ed37a | 727 | { |
999836aa | 728 | int index = ((aByte & (0x80 >> bit)) ? 1 : 0); |
e65ed37a RR |
729 | ptr[poffset] = cmap[index].r; |
730 | ptr[poffset + 1] = cmap[index].g; | |
731 | ptr[poffset + 2] = cmap[index].b; | |
732 | column++; | |
733 | } | |
734 | } | |
05813ada | 735 | else if ( bpp == 4 ) |
e65ed37a | 736 | { |
05813ada | 737 | if ( comp == BI_RLE4 ) |
e65ed37a | 738 | { |
2b5f62a0 VZ |
739 | wxUint8 first; |
740 | first = aByte; | |
741 | aByte = stream.GetC(); | |
742 | if ( first == 0 ) | |
743 | { | |
744 | if ( aByte == 0 ) | |
745 | { | |
d06c3098 DS |
746 | // end of scanline marker |
747 | column = width; | |
748 | row--; | |
2b5f62a0 VZ |
749 | } |
750 | else if ( aByte == 1 ) | |
751 | { | |
d06c3098 | 752 | // end of RLE data marker, stop decoding |
2b5f62a0 | 753 | column = width; |
d06c3098 | 754 | row = height; |
2b5f62a0 VZ |
755 | } |
756 | else if ( aByte == 2 ) | |
757 | { | |
d06c3098 | 758 | // delta marker, move in image |
2b5f62a0 VZ |
759 | aByte = stream.GetC(); |
760 | column += aByte; | |
761 | linepos = column * bpp / 4; | |
762 | aByte = stream.GetC(); | |
d06c3098 | 763 | row += aByte; // upside down |
2b5f62a0 VZ |
764 | } |
765 | else | |
766 | { | |
767 | int absolute = aByte; | |
768 | wxUint8 nibble[2] ; | |
769 | int readBytes = 0 ; | |
770 | for (int k = 0; k < absolute; k++) | |
771 | { | |
772 | if ( !(k % 2 ) ) | |
773 | { | |
774 | ++readBytes ; | |
775 | aByte = stream.GetC(); | |
9a431f4d WS |
776 | nibble[0] = (wxUint8)( (aByte & 0xF0) >> 4 ) ; |
777 | nibble[1] = (wxUint8)( aByte & 0x0F ) ; | |
2b5f62a0 VZ |
778 | } |
779 | ptr[poffset ] = cmap[nibble[k%2]].r; | |
780 | ptr[poffset + 1] = cmap[nibble[k%2]].g; | |
781 | ptr[poffset + 2] = cmap[nibble[k%2]].b; | |
782 | column++; | |
783 | if ( k % 2 ) | |
784 | linepos++; | |
785 | } | |
786 | if ( readBytes & 0x01 ) | |
787 | aByte = stream.GetC(); | |
788 | } | |
789 | } | |
790 | else | |
791 | { | |
792 | wxUint8 nibble[2] ; | |
9a431f4d WS |
793 | nibble[0] = (wxUint8)( (aByte & 0xF0) >> 4 ) ; |
794 | nibble[1] = (wxUint8)( aByte & 0x0F ) ; | |
2b5f62a0 VZ |
795 | |
796 | for ( int l = 0; l < first && column < width; l++ ) | |
797 | { | |
798 | ptr[poffset ] = cmap[nibble[l%2]].r; | |
799 | ptr[poffset + 1] = cmap[nibble[l%2]].g; | |
800 | ptr[poffset + 2] = cmap[nibble[l%2]].b; | |
801 | column++; | |
802 | if ( l % 2 ) | |
803 | linepos++; | |
804 | } | |
805 | } | |
e65ed37a RR |
806 | } |
807 | else | |
808 | { | |
999836aa | 809 | for (int nibble = 0; nibble < 2 && column < width; nibble++) |
e65ed37a | 810 | { |
38e23f10 | 811 | int index = ((aByte & (0xF0 >> (nibble * 4))) >> (!nibble * 4)); |
05813ada | 812 | if ( index >= 16 ) |
e65ed37a RR |
813 | index = 15; |
814 | ptr[poffset] = cmap[index].r; | |
815 | ptr[poffset + 1] = cmap[index].g; | |
816 | ptr[poffset + 2] = cmap[index].b; | |
817 | column++; | |
818 | } | |
819 | } | |
820 | } | |
05813ada | 821 | else if ( bpp == 8 ) |
e65ed37a | 822 | { |
05813ada | 823 | if ( comp == BI_RLE8 ) |
e65ed37a RR |
824 | { |
825 | unsigned char first; | |
826 | first = aByte; | |
827 | aByte = stream.GetC(); | |
05813ada | 828 | if ( first == 0 ) |
e65ed37a | 829 | { |
05813ada | 830 | if ( aByte == 0 ) |
e65ed37a | 831 | { |
d06c3098 DS |
832 | // end of scanline marker |
833 | column = width; | |
834 | row--; | |
e65ed37a | 835 | } |
05813ada | 836 | else if ( aByte == 1 ) |
e65ed37a | 837 | { |
d06c3098 | 838 | // end of RLE data marker, stop decoding |
e65ed37a | 839 | column = width; |
d06c3098 | 840 | row = height; |
e65ed37a | 841 | } |
05813ada | 842 | else if ( aByte == 2 ) |
e65ed37a | 843 | { |
d06c3098 | 844 | // delta marker, move in image |
e65ed37a RR |
845 | aByte = stream.GetC(); |
846 | column += aByte; | |
847 | linepos = column * bpp / 8; | |
848 | aByte = stream.GetC(); | |
d06c3098 | 849 | row -= aByte; |
e65ed37a RR |
850 | } |
851 | else | |
852 | { | |
853 | int absolute = aByte; | |
854 | for (int k = 0; k < absolute; k++) | |
855 | { | |
856 | linepos++; | |
857 | aByte = stream.GetC(); | |
858 | ptr[poffset ] = cmap[aByte].r; | |
859 | ptr[poffset + 1] = cmap[aByte].g; | |
860 | ptr[poffset + 2] = cmap[aByte].b; | |
861 | column++; | |
862 | } | |
05813ada | 863 | if ( absolute & 0x01 ) |
e65ed37a RR |
864 | aByte = stream.GetC(); |
865 | } | |
866 | } | |
867 | else | |
868 | { | |
05813ada | 869 | for ( int l = 0; l < first && column < width; l++ ) |
e65ed37a RR |
870 | { |
871 | ptr[poffset ] = cmap[aByte].r; | |
872 | ptr[poffset + 1] = cmap[aByte].g; | |
873 | ptr[poffset + 2] = cmap[aByte].b; | |
874 | column++; | |
875 | linepos++; | |
876 | } | |
877 | } | |
878 | } | |
879 | else | |
880 | { | |
881 | ptr[poffset ] = cmap[aByte].r; | |
882 | ptr[poffset + 1] = cmap[aByte].g; | |
883 | ptr[poffset + 2] = cmap[aByte].b; | |
884 | column++; | |
953704c1 | 885 | // linepos += size; seems to be wrong, RR |
e65ed37a RR |
886 | } |
887 | } | |
2b5f62a0 VZ |
888 | } |
889 | else if ( bpp == 24 ) | |
890 | { | |
891 | stream.Read(bbuf, 3); | |
892 | linepos += 3; | |
893 | ptr[poffset ] = (unsigned char)bbuf[2]; | |
894 | ptr[poffset + 1] = (unsigned char)bbuf[1]; | |
895 | ptr[poffset + 2] = (unsigned char)bbuf[0]; | |
896 | column++; | |
897 | } | |
898 | else if ( bpp == 16 ) | |
899 | { | |
900 | unsigned char temp; | |
901 | stream.Read(&aWord, 2); | |
902 | aWord = wxUINT16_SWAP_ON_BE(aWord); | |
903 | linepos += 2; | |
38e23f10 | 904 | /* Use the masks and calculated amount of shift |
9042a017 VZ |
905 | to retrieve the color data out of the word. Then |
906 | shift it left by (8 - number of bits) such that | |
907 | the image has the proper dynamic range */ | |
38e23f10 | 908 | temp = (unsigned char)(((aWord & rmask) >> rshift) << (8-rbits)); |
2b5f62a0 | 909 | ptr[poffset] = temp; |
38e23f10 | 910 | temp = (unsigned char)(((aWord & gmask) >> gshift) << (8-gbits)); |
2b5f62a0 | 911 | ptr[poffset + 1] = temp; |
38e23f10 | 912 | temp = (unsigned char)(((aWord & bmask) >> bshift) << (8-bbits)); |
2b5f62a0 VZ |
913 | ptr[poffset + 2] = temp; |
914 | column++; | |
915 | } | |
916 | else | |
917 | { | |
918 | unsigned char temp; | |
919 | stream.Read(&aDword, 4); | |
920 | aDword = wxINT32_SWAP_ON_BE(aDword); | |
921 | linepos += 4; | |
9a431f4d | 922 | temp = (unsigned char)((aDword & rmask) >> rshift); |
2b5f62a0 | 923 | ptr[poffset] = temp; |
9a431f4d | 924 | temp = (unsigned char)((aDword & gmask) >> gshift); |
2b5f62a0 | 925 | ptr[poffset + 1] = temp; |
9a431f4d | 926 | temp = (unsigned char)((aDword & bmask) >> bshift); |
2b5f62a0 | 927 | ptr[poffset + 2] = temp; |
55a35cb0 VZ |
928 | if ( alpha ) |
929 | { | |
930 | temp = (unsigned char)((aDword & amask) >> ashift); | |
931 | alpha[line * width + column] = temp; | |
b5131230 VZ |
932 | |
933 | if ( temp != wxALPHA_TRANSPARENT ) | |
934 | hasValidAlpha = true; | |
55a35cb0 | 935 | } |
2b5f62a0 VZ |
936 | column++; |
937 | } | |
938 | } | |
939 | while ( (linepos < linesize) && (comp != 1) && (comp != 2) ) | |
940 | { | |
941 | stream.Read(&aByte, 1); | |
942 | linepos += 1; | |
943 | if ( !stream ) | |
944 | break; | |
945 | } | |
946 | } | |
947 | ||
7beb59f3 | 948 | image->SetMask(false); |
2b5f62a0 | 949 | |
b5131230 VZ |
950 | // check if we had any valid alpha values in this bitmap |
951 | if ( alpha && !hasValidAlpha ) | |
952 | { | |
953 | // we didn't, so finally discard the alpha channel completely | |
954 | image->ClearAlpha(); | |
955 | } | |
956 | ||
2b5f62a0 VZ |
957 | const wxStreamError err = stream.GetLastError(); |
958 | return err == wxSTREAM_NO_ERROR || err == wxSTREAM_EOF; | |
52b64b0a RR |
959 | } |
960 | ||
574c939e | 961 | bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream, |
05813ada | 962 | bool verbose, bool IsBmp) |
52b64b0a | 963 | { |
52b64b0a RR |
964 | wxUint16 aWord; |
965 | wxInt32 dbuf[4]; | |
966 | wxInt8 bbuf[4]; | |
52b64b0a | 967 | |
52b64b0a RR |
968 | if ( IsBmp ) |
969 | { | |
970 | // read the header off the .BMP format file | |
05813ada VS |
971 | stream.Read(bbuf, 2); |
972 | stream.Read(dbuf, 16); | |
52b64b0a RR |
973 | } |
974 | else | |
975 | { | |
05813ada | 976 | stream.Read(dbuf, 4); |
52b64b0a RR |
977 | } |
978 | #if 0 // unused | |
05813ada | 979 | wxInt32 size = wxINT32_SWAP_ON_BE(dbuf[0]); |
52b64b0a | 980 | #endif |
8faef7cc | 981 | wxFileOffset offset = wxINT32_SWAP_ON_BE(dbuf[2]); |
52b64b0a RR |
982 | |
983 | stream.Read(dbuf, 4 * 2); | |
ecae80b2 WS |
984 | int width = wxINT32_SWAP_ON_BE((int)dbuf[0]); |
985 | int height = wxINT32_SWAP_ON_BE((int)dbuf[1]); | |
05813ada | 986 | if ( !IsBmp)height = height / 2; // for icons divide by 2 |
574c939e | 987 | |
05813ada | 988 | if ( width > 32767 ) |
52b64b0a RR |
989 | { |
990 | if (verbose) | |
af588446 | 991 | { |
52b64b0a | 992 | wxLogError( _("DIB Header: Image width > 32767 pixels for file.") ); |
af588446 | 993 | } |
7beb59f3 | 994 | return false; |
52b64b0a | 995 | } |
05813ada | 996 | if ( height > 32767 ) |
52b64b0a RR |
997 | { |
998 | if (verbose) | |
af588446 | 999 | { |
52b64b0a | 1000 | wxLogError( _("DIB Header: Image height > 32767 pixels for file.") ); |
af588446 | 1001 | } |
7beb59f3 | 1002 | return false; |
52b64b0a RR |
1003 | } |
1004 | ||
05813ada | 1005 | stream.Read(&aWord, 2); |
52b64b0a RR |
1006 | /* |
1007 | TODO | |
1008 | int planes = (int)wxUINT16_SWAP_ON_BE( aWord ); | |
1009 | */ | |
05813ada | 1010 | stream.Read(&aWord, 2); |
ecae80b2 | 1011 | int bpp = wxUINT16_SWAP_ON_BE((int)aWord); |
05813ada | 1012 | if ( bpp != 1 && bpp != 4 && bpp != 8 && bpp != 16 && bpp != 24 && bpp != 32 ) |
52b64b0a RR |
1013 | { |
1014 | if (verbose) | |
af588446 | 1015 | { |
52b64b0a | 1016 | wxLogError( _("DIB Header: Unknown bitdepth in file.") ); |
af588446 | 1017 | } |
7beb59f3 | 1018 | return false; |
52b64b0a RR |
1019 | } |
1020 | ||
05813ada | 1021 | stream.Read(dbuf, 4 * 4); |
ecae80b2 | 1022 | int comp = wxINT32_SWAP_ON_BE((int)dbuf[0]); |
574c939e | 1023 | if ( comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 && |
05813ada | 1024 | comp != BI_BITFIELDS ) |
52b64b0a RR |
1025 | { |
1026 | if (verbose) | |
af588446 | 1027 | { |
52b64b0a | 1028 | wxLogError( _("DIB Header: Unknown encoding in file.") ); |
af588446 | 1029 | } |
7beb59f3 | 1030 | return false; |
52b64b0a RR |
1031 | } |
1032 | ||
05813ada | 1033 | stream.Read(dbuf, 4 * 2); |
37ba70a5 | 1034 | |
ecae80b2 | 1035 | int ncolors = wxINT32_SWAP_ON_BE( (int)dbuf[0] ); |
52b64b0a RR |
1036 | if (ncolors == 0) |
1037 | ncolors = 1 << bpp; | |
1038 | /* some more sanity checks */ | |
1039 | if (((comp == BI_RLE4) && (bpp != 4)) || | |
1040 | ((comp == BI_RLE8) && (bpp != 8)) || | |
1041 | ((comp == BI_BITFIELDS) && (bpp != 16 && bpp != 32))) | |
1042 | { | |
1043 | if (verbose) | |
af588446 | 1044 | { |
52b64b0a | 1045 | wxLogError( _("DIB Header: Encoding doesn't match bitdepth.") ); |
af588446 | 1046 | } |
7beb59f3 | 1047 | return false; |
52b64b0a RR |
1048 | } |
1049 | ||
1050 | //read DIB; this is the BMP image or the XOR part of an icon image | |
05813ada | 1051 | if ( !DoLoadDib(image, width, height, bpp, ncolors, comp, offset, stream, |
7beb59f3 | 1052 | verbose, IsBmp, true) ) |
52b64b0a RR |
1053 | { |
1054 | if (verbose) | |
af588446 | 1055 | { |
eab77b59 | 1056 | wxLogError( _("Error in reading image DIB.") ); |
af588446 | 1057 | } |
7beb59f3 | 1058 | return false; |
52b64b0a RR |
1059 | } |
1060 | ||
1061 | if ( !IsBmp ) | |
1062 | { | |
1063 | //read Icon mask which is monochrome | |
1064 | //there is no palette, so we will create one | |
1f5b2017 | 1065 | wxImage mask; |
05813ada | 1066 | if ( !DoLoadDib(&mask, width, height, 1, 2, BI_RGB, offset, stream, |
7beb59f3 | 1067 | verbose, IsBmp, false) ) |
52b64b0a RR |
1068 | { |
1069 | if (verbose) | |
af588446 | 1070 | { |
52b64b0a | 1071 | wxLogError( _("ICO: Error in reading mask DIB.") ); |
af588446 | 1072 | } |
7beb59f3 | 1073 | return false; |
52b64b0a | 1074 | } |
1f5b2017 | 1075 | image->SetMaskFromImage(mask, 255, 255, 255); |
52b64b0a RR |
1076 | |
1077 | } | |
05813ada | 1078 | |
37ba70a5 VZ |
1079 | // the resolution in the bitmap header is in meters, convert to centimeters |
1080 | image->SetOption(wxIMAGE_OPTION_RESOLUTIONUNIT, wxIMAGE_RESOLUTION_CM); | |
1081 | image->SetOption(wxIMAGE_OPTION_RESOLUTIONX, dbuf[2]/100); | |
1082 | image->SetOption(wxIMAGE_OPTION_RESOLUTIONY, dbuf[3]/100); | |
1083 | ||
7beb59f3 | 1084 | return true; |
e65ed37a RR |
1085 | } |
1086 | ||
574c939e | 1087 | bool wxBMPHandler::LoadFile(wxImage *image, wxInputStream& stream, |
05813ada VS |
1088 | bool verbose, int WXUNUSED(index)) |
1089 | { | |
1090 | // Read a single DIB fom the file: | |
7beb59f3 | 1091 | return LoadDib(image, stream, verbose, true/*isBmp*/); |
05813ada | 1092 | } |
52b64b0a | 1093 | |
05813ada | 1094 | bool wxBMPHandler::DoCanRead(wxInputStream& stream) |
52b64b0a | 1095 | { |
05813ada VS |
1096 | unsigned char hdr[2]; |
1097 | ||
8faef7cc | 1098 | if ( !stream.Read(hdr, WXSIZEOF(hdr)) ) // it's ok to modify the stream position here |
7beb59f3 | 1099 | return false; |
79fa2374 | 1100 | |
79fa2374 VZ |
1101 | // do we have the BMP file signature? |
1102 | return hdr[0] == 'B' && hdr[1] == 'M'; | |
52b64b0a RR |
1103 | } |
1104 | ||
e30285ab VZ |
1105 | #endif // wxUSE_STREAMS |
1106 | ||
52b64b0a | 1107 | |
658974ae | 1108 | #if wxUSE_ICO_CUR |
05813ada VS |
1109 | //----------------------------------------------------------------------------- |
1110 | // wxICOHandler | |
1111 | //----------------------------------------------------------------------------- | |
1112 | ||
1113 | IMPLEMENT_DYNAMIC_CLASS(wxICOHandler, wxBMPHandler) | |
1114 | ||
e30285ab VZ |
1115 | #if wxUSE_STREAMS |
1116 | ||
05813ada VS |
1117 | struct ICONDIRENTRY |
1118 | { | |
1119 | wxUint8 bWidth; // Width of the image | |
1120 | wxUint8 bHeight; // Height of the image (times 2) | |
1121 | wxUint8 bColorCount; // Number of colors in image (0 if >=8bpp) | |
1122 | wxUint8 bReserved; // Reserved | |
1123 | ||
1124 | // these two are different in icons and cursors: | |
1125 | // icon or cursor | |
1126 | wxUint16 wPlanes; // Color Planes or XHotSpot | |
1127 | wxUint16 wBitCount; // Bits per pixel or YHotSpot | |
1128 | ||
1129 | wxUint32 dwBytesInRes; // how many bytes in this resource? | |
1130 | wxUint32 dwImageOffset; // where in the file is this image | |
1131 | }; | |
1132 | ||
1133 | struct ICONDIR | |
1134 | { | |
1135 | wxUint16 idReserved; // Reserved | |
1136 | wxUint16 idType; // resource type (1 for icons, 2 for cursors) | |
1137 | wxUint16 idCount; // how many images? | |
1138 | }; | |
1139 | ||
1140 | ||
1141 | bool wxICOHandler::SaveFile(wxImage *image, | |
1142 | wxOutputStream& stream, | |
1143 | bool verbose) | |
1144 | ||
52b64b0a | 1145 | { |
05813ada VS |
1146 | //sanity check; icon must be less than 127 pixels high and 255 wide |
1147 | if ( image->GetHeight () > 127 ) | |
1148 | { | |
1149 | if ( verbose ) | |
af588446 | 1150 | { |
05813ada | 1151 | wxLogError(_("ICO: Image too tall for an icon.")); |
af588446 | 1152 | } |
7beb59f3 | 1153 | return false; |
05813ada VS |
1154 | } |
1155 | if ( image->GetWidth () > 255 ) | |
1156 | { | |
1157 | if ( verbose ) | |
af588446 | 1158 | { |
05813ada | 1159 | wxLogError(_("ICO: Image too wide for an icon.")); |
af588446 | 1160 | } |
7beb59f3 | 1161 | return false; |
05813ada VS |
1162 | } |
1163 | ||
1229a1e7 | 1164 | const int images = 1; // only generate one image |
05813ada | 1165 | |
574c939e | 1166 | // VS: This is a hack of sort - since ICO and CUR files are almost |
05813ada VS |
1167 | // identical, we have all the meat in wxICOHandler and check for |
1168 | // the actual (handler) type when the code has to distinguish between | |
1169 | // the two formats | |
1170 | int type = (this->GetType() == wxBITMAP_TYPE_CUR) ? 2 : 1; | |
1171 | ||
1172 | // write a header, (ICONDIR) | |
1173 | // Calculate the header size | |
1174 | wxUint32 offset = 3 * sizeof(wxUint16); | |
1175 | ||
1176 | ICONDIR IconDir; | |
1177 | IconDir.idReserved = 0; | |
ecae80b2 WS |
1178 | IconDir.idType = wxUINT16_SWAP_ON_BE((wxUint16)type); |
1179 | IconDir.idCount = wxUINT16_SWAP_ON_BE((wxUint16)images); | |
05813ada VS |
1180 | stream.Write(&IconDir.idReserved, sizeof(IconDir.idReserved)); |
1181 | stream.Write(&IconDir.idType, sizeof(IconDir.idType)); | |
1182 | stream.Write(&IconDir.idCount, sizeof(IconDir.idCount)); | |
1183 | if ( !stream.IsOk() ) | |
1184 | { | |
1185 | if ( verbose ) | |
af588446 | 1186 | { |
05813ada | 1187 | wxLogError(_("ICO: Error writing the image file!")); |
af588446 | 1188 | } |
7beb59f3 | 1189 | return false; |
05813ada VS |
1190 | } |
1191 | ||
1192 | // for each iamage write a description ICONDIRENTRY: | |
1193 | ICONDIRENTRY icondirentry; | |
1229a1e7 | 1194 | for (int img = 0; img < images; img++) |
05813ada VS |
1195 | { |
1196 | wxImage mask; | |
1197 | ||
1198 | if ( image->HasMask() ) | |
574c939e | 1199 | { |
05813ada VS |
1200 | // make another image with black/white: |
1201 | mask = image->ConvertToMono (image->GetMaskRed(), image->GetMaskGreen(), image->GetMaskBlue() ); | |
1202 | ||
1203 | // now we need to change the masked regions to black: | |
1204 | unsigned char r = image->GetMaskRed(); | |
1205 | unsigned char g = image->GetMaskGreen(); | |
1206 | unsigned char b = image->GetMaskBlue(); | |
1207 | if ( (r != 0) || (g != 0) || (b != 0) ) | |
1208 | { | |
1209 | // Go round and apply black to the masked bits: | |
1210 | int i, j; | |
1211 | for (i = 0; i < mask.GetWidth(); i++) | |
1212 | { | |
1213 | for (j = 0; j < mask.GetHeight(); j++) | |
1214 | { | |
574c939e KB |
1215 | if ((r == mask.GetRed(i, j)) && |
1216 | (g == mask.GetGreen(i, j))&& | |
05813ada VS |
1217 | (b == mask.GetBlue(i, j)) ) |
1218 | image->SetRGB(i, j, 0, 0, 0 ); | |
1219 | } | |
1220 | } | |
1221 | } | |
1222 | } | |
1223 | else | |
1224 | { | |
1225 | // just make a black mask all over: | |
1226 | mask = image->Copy(); | |
1229a1e7 WS |
1227 | int i, j; |
1228 | for (i = 0; i < mask.GetWidth(); i++) | |
05813ada | 1229 | for (j = 0; j < mask.GetHeight(); j++) |
1229a1e7 | 1230 | mask.SetRGB(i, j, 0, 0, 0 ); |
05813ada VS |
1231 | } |
1232 | // Set the formats for image and mask | |
1233 | // (Windows never saves with more than 8 colors): | |
fd94e8aa | 1234 | image->SetOption(wxIMAGE_OPTION_BMP_FORMAT, wxBMP_8BPP); |
05813ada VS |
1235 | |
1236 | // monochome bitmap: | |
fd94e8aa | 1237 | mask.SetOption(wxIMAGE_OPTION_BMP_FORMAT, wxBMP_1BPP_BW); |
7beb59f3 WS |
1238 | bool IsBmp = false; |
1239 | bool IsMask = false; | |
05813ada VS |
1240 | |
1241 | //calculate size and offset of image and mask | |
1242 | wxCountingOutputStream cStream; | |
5cb598ae | 1243 | bool bResult = SaveDib(image, cStream, verbose, IsBmp, IsMask); |
05813ada VS |
1244 | if ( !bResult ) |
1245 | { | |
1246 | if ( verbose ) | |
af588446 | 1247 | { |
05813ada | 1248 | wxLogError(_("ICO: Error writing the image file!")); |
af588446 | 1249 | } |
7beb59f3 | 1250 | return false; |
05813ada | 1251 | } |
7beb59f3 | 1252 | IsMask = true; |
05813ada VS |
1253 | |
1254 | bResult = SaveDib(&mask, cStream, verbose, IsBmp, IsMask); | |
1255 | if ( !bResult ) | |
1256 | { | |
1257 | if ( verbose ) | |
af588446 | 1258 | { |
05813ada | 1259 | wxLogError(_("ICO: Error writing the image file!")); |
af588446 | 1260 | } |
7beb59f3 | 1261 | return false; |
05813ada VS |
1262 | } |
1263 | wxUint32 Size = cStream.GetSize(); | |
1264 | ||
b7cacb43 | 1265 | // wxCountingOutputStream::IsOk() always returns true for now and this |
05813ada VS |
1266 | // "if" provokes VC++ warnings in optimized build |
1267 | #if 0 | |
a1b806b9 | 1268 | if ( !cStream.IsOk() ) |
05813ada VS |
1269 | { |
1270 | if ( verbose ) | |
43b2d5e7 | 1271 | { |
05813ada | 1272 | wxLogError(_("ICO: Error writing the image file!")); |
43b2d5e7 | 1273 | } |
7beb59f3 | 1274 | return false; |
05813ada VS |
1275 | } |
1276 | #endif // 0 | |
1277 | ||
1278 | offset = offset + sizeof(ICONDIRENTRY); | |
1279 | ||
f12a90c7 DE |
1280 | icondirentry.bWidth = (wxUint8)image->GetWidth(); |
1281 | icondirentry.bHeight = (wxUint8)(2 * image->GetHeight()); | |
05813ada VS |
1282 | icondirentry.bColorCount = 0; |
1283 | icondirentry.bReserved = 0; | |
1284 | icondirentry.wPlanes = wxUINT16_SWAP_ON_BE(1); | |
1285 | icondirentry.wBitCount = wxUINT16_SWAP_ON_BE(wxBMP_8BPP); | |
1286 | if ( type == 2 /*CUR*/) | |
1287 | { | |
fd94e8aa VS |
1288 | int hx = image->HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X) ? |
1289 | image->GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) : | |
05813ada | 1290 | image->GetWidth() / 2; |
fd94e8aa VS |
1291 | int hy = image->HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ? |
1292 | image->GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) : | |
05813ada VS |
1293 | image->GetHeight() / 2; |
1294 | ||
1295 | // actually write the values of the hot spot here: | |
1296 | icondirentry.wPlanes = wxUINT16_SWAP_ON_BE((wxUint16)hx); | |
1297 | icondirentry.wBitCount = wxUINT16_SWAP_ON_BE((wxUint16)hy); | |
1298 | } | |
1299 | icondirentry.dwBytesInRes = wxUINT32_SWAP_ON_BE(Size); | |
1300 | icondirentry.dwImageOffset = wxUINT32_SWAP_ON_BE(offset); | |
1301 | ||
1302 | // increase size to allow for the data written: | |
1303 | offset += Size; | |
1304 | ||
1305 | // write to stream: | |
1306 | stream.Write(&icondirentry.bWidth, sizeof(icondirentry.bWidth)); | |
1307 | stream.Write(&icondirentry.bHeight, sizeof(icondirentry.bHeight)); | |
1308 | stream.Write(&icondirentry.bColorCount, sizeof(icondirentry.bColorCount)); | |
1309 | stream.Write(&icondirentry.bReserved, sizeof(icondirentry.bReserved)); | |
1310 | stream.Write(&icondirentry.wPlanes, sizeof(icondirentry.wPlanes)); | |
1311 | stream.Write(&icondirentry.wBitCount, sizeof(icondirentry.wBitCount)); | |
1312 | stream.Write(&icondirentry.dwBytesInRes, sizeof(icondirentry.dwBytesInRes)); | |
1313 | stream.Write(&icondirentry.dwImageOffset, sizeof(icondirentry.dwImageOffset)); | |
1314 | if ( !stream.IsOk() ) | |
1315 | { | |
1316 | if ( verbose ) | |
af588446 | 1317 | { |
05813ada | 1318 | wxLogError(_("ICO: Error writing the image file!")); |
af588446 | 1319 | } |
7beb59f3 | 1320 | return false; |
05813ada VS |
1321 | } |
1322 | ||
1323 | // actually save it: | |
7beb59f3 | 1324 | IsMask = false; |
05813ada VS |
1325 | bResult = SaveDib(image, stream, verbose, IsBmp, IsMask); |
1326 | if ( !bResult ) | |
1327 | { | |
1328 | if ( verbose ) | |
af588446 | 1329 | { |
05813ada | 1330 | wxLogError(_("ICO: Error writing the image file!")); |
af588446 | 1331 | } |
7beb59f3 | 1332 | return false; |
05813ada | 1333 | } |
7beb59f3 | 1334 | IsMask = true; |
05813ada VS |
1335 | |
1336 | bResult = SaveDib(&mask, stream, verbose, IsBmp, IsMask); | |
1337 | if ( !bResult ) | |
1338 | { | |
1339 | if ( verbose ) | |
af588446 | 1340 | { |
05813ada | 1341 | wxLogError(_("ICO: Error writing the image file!")); |
af588446 | 1342 | } |
7beb59f3 | 1343 | return false; |
05813ada VS |
1344 | } |
1345 | ||
1346 | } // end of for loop | |
1347 | ||
7beb59f3 | 1348 | return true; |
05813ada VS |
1349 | } |
1350 | ||
574c939e | 1351 | bool wxICOHandler::LoadFile(wxImage *image, wxInputStream& stream, |
05813ada | 1352 | bool verbose, int index) |
658974ae | 1353 | { |
5c98cb9b | 1354 | if ( stream.IsSeekable() && stream.SeekI(0) == wxInvalidOffset ) |
bf34105a DS |
1355 | { |
1356 | return false; | |
1357 | } | |
1358 | ||
658974ae VS |
1359 | return DoLoadFile(image, stream, verbose, index); |
1360 | } | |
1361 | ||
574c939e | 1362 | bool wxICOHandler::DoLoadFile(wxImage *image, wxInputStream& stream, |
5c235ea0 | 1363 | bool WXUNUSED(verbose), int index) |
05813ada | 1364 | { |
5cb598ae WS |
1365 | bool bResult wxDUMMY_INITIALIZE(false); |
1366 | bool IsBmp = false; | |
52b64b0a | 1367 | |
05813ada | 1368 | ICONDIR IconDir; |
658974ae | 1369 | |
05813ada VS |
1370 | stream.Read(&IconDir, sizeof(IconDir)); |
1371 | wxUint16 nIcons = wxUINT16_SWAP_ON_BE(IconDir.idCount); | |
03647350 | 1372 | |
05813ada VS |
1373 | // nType is 1 for Icons, 2 for Cursors: |
1374 | wxUint16 nType = wxUINT16_SWAP_ON_BE(IconDir.idType); | |
574c939e | 1375 | |
05813ada VS |
1376 | // loop round the icons and choose the best one: |
1377 | ICONDIRENTRY *pIconDirEntry = new ICONDIRENTRY[nIcons]; | |
1378 | ICONDIRENTRY *pCurrentEntry = pIconDirEntry; | |
1379 | int wMax = 0; | |
1380 | int colmax = 0; | |
1381 | int iSel = wxNOT_FOUND; | |
1382 | ||
8faef7cc | 1383 | // remember how many bytes we read from the stream: |
a9a2485d | 1384 | wxFileOffset alreadySeeked = sizeof(IconDir); |
03647350 | 1385 | |
8faef7cc | 1386 | for (unsigned int i = 0; i < nIcons; i++ ) |
52b64b0a | 1387 | { |
a9a2485d | 1388 | alreadySeeked += stream.Read(pCurrentEntry, sizeof(ICONDIRENTRY)).LastRead(); |
03647350 | 1389 | |
05813ada VS |
1390 | // bHeight and bColorCount are wxUint8 |
1391 | if ( pCurrentEntry->bWidth >= wMax ) | |
52b64b0a | 1392 | { |
05813ada VS |
1393 | // see if we have more colors, ==0 indicates > 8bpp: |
1394 | if ( pCurrentEntry->bColorCount == 0 ) | |
1395 | pCurrentEntry->bColorCount = 255; | |
1396 | if ( pCurrentEntry->bColorCount >= colmax ) | |
574c939e | 1397 | { |
05813ada VS |
1398 | iSel = i; |
1399 | wMax = pCurrentEntry->bWidth; | |
1400 | colmax = pCurrentEntry->bColorCount; | |
52b64b0a RR |
1401 | } |
1402 | } | |
03647350 | 1403 | |
05813ada VS |
1404 | pCurrentEntry++; |
1405 | } | |
574c939e | 1406 | |
05813ada VS |
1407 | if ( index != -1 ) |
1408 | { | |
1409 | // VS: Note that we *have* to run the loop above even if index != -1, because | |
1410 | // it reads ICONDIRENTRies. | |
1411 | iSel = index; | |
52b64b0a | 1412 | } |
574c939e | 1413 | |
05813ada | 1414 | if ( iSel == wxNOT_FOUND || iSel < 0 || iSel >= nIcons ) |
52b64b0a | 1415 | { |
05813ada | 1416 | wxLogError(_("ICO: Invalid icon index.")); |
5cb598ae | 1417 | bResult = false; |
52b64b0a RR |
1418 | } |
1419 | else | |
1420 | { | |
05813ada VS |
1421 | // seek to selected icon: |
1422 | pCurrentEntry = pIconDirEntry + iSel; | |
03647350 | 1423 | |
8faef7cc FM |
1424 | // NOTE: seeking a positive amount in wxFromCurrent mode allows us to |
1425 | // load even non-seekable streams (see wxInputStream::SeekI docs)! | |
a9a2485d FM |
1426 | wxFileOffset offset = wxUINT32_SWAP_ON_BE(pCurrentEntry->dwImageOffset) - alreadySeeked; |
1427 | if (offset != 0 && stream.SeekI(offset, wxFromCurrent) == wxInvalidOffset) | |
b81e4506 | 1428 | return false; |
03647350 | 1429 | |
7beb59f3 | 1430 | bResult = LoadDib(image, stream, true, IsBmp); |
658974ae VS |
1431 | bool bIsCursorType = (this->GetType() == wxBITMAP_TYPE_CUR) || (this->GetType() == wxBITMAP_TYPE_ANI); |
1432 | if ( bResult && bIsCursorType && nType == 2 ) | |
05813ada VS |
1433 | { |
1434 | // it is a cursor, so let's set the hotspot: | |
fd94e8aa VS |
1435 | image->SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, wxUINT16_SWAP_ON_BE(pCurrentEntry->wPlanes)); |
1436 | image->SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, wxUINT16_SWAP_ON_BE(pCurrentEntry->wBitCount)); | |
05813ada | 1437 | } |
52b64b0a | 1438 | } |
03647350 | 1439 | |
8faef7cc | 1440 | delete [] pIconDirEntry; |
03647350 | 1441 | |
05813ada | 1442 | return bResult; |
52b64b0a RR |
1443 | } |
1444 | ||
8faef7cc | 1445 | int wxICOHandler::DoGetImageCount(wxInputStream& stream) |
0828c087 | 1446 | { |
bf34105a DS |
1447 | // It's ok to modify the stream position in this function. |
1448 | ||
5c98cb9b | 1449 | if ( stream.IsSeekable() && stream.SeekI(0) == wxInvalidOffset ) |
bf34105a DS |
1450 | { |
1451 | return 0; | |
1452 | } | |
1453 | ||
05813ada | 1454 | ICONDIR IconDir; |
8faef7cc | 1455 | |
b81e4506 FM |
1456 | if (stream.Read(&IconDir, sizeof(IconDir)).LastRead() != sizeof(IconDir)) |
1457 | return 0; | |
03647350 | 1458 | |
8faef7cc | 1459 | return (int)wxUINT16_SWAP_ON_BE(IconDir.idCount); |
0828c087 VS |
1460 | } |
1461 | ||
05813ada | 1462 | bool wxICOHandler::DoCanRead(wxInputStream& stream) |
52b64b0a | 1463 | { |
b4c47016 | 1464 | return CanReadICOOrCUR(&stream, 1 /*for identifying an icon*/); |
39d16996 | 1465 | |
52b64b0a RR |
1466 | } |
1467 | ||
e30285ab | 1468 | #endif // wxUSE_STREAMS |
e65ed37a | 1469 | |
05813ada VS |
1470 | |
1471 | //----------------------------------------------------------------------------- | |
1472 | // wxCURHandler | |
1473 | //----------------------------------------------------------------------------- | |
1474 | ||
1475 | IMPLEMENT_DYNAMIC_CLASS(wxCURHandler, wxICOHandler) | |
1476 | ||
e30285ab VZ |
1477 | #if wxUSE_STREAMS |
1478 | ||
05813ada VS |
1479 | bool wxCURHandler::DoCanRead(wxInputStream& stream) |
1480 | { | |
b4c47016 | 1481 | return CanReadICOOrCUR(&stream, 2 /*for identifying a cursor*/); |
05813ada VS |
1482 | } |
1483 | ||
e30285ab VZ |
1484 | #endif // wxUSE_STREAMS |
1485 | ||
658974ae VS |
1486 | //----------------------------------------------------------------------------- |
1487 | // wxANIHandler | |
1488 | //----------------------------------------------------------------------------- | |
1489 | ||
1490 | IMPLEMENT_DYNAMIC_CLASS(wxANIHandler, wxCURHandler) | |
1491 | ||
e30285ab VZ |
1492 | #if wxUSE_STREAMS |
1493 | ||
574c939e | 1494 | bool wxANIHandler::LoadFile(wxImage *image, wxInputStream& stream, |
72045d57 | 1495 | bool WXUNUSED(verbose), int index) |
658974ae | 1496 | { |
72045d57 VZ |
1497 | wxANIDecoder decoder; |
1498 | if (!decoder.Load(stream)) | |
7beb59f3 | 1499 | return false; |
658974ae | 1500 | |
72045d57 | 1501 | return decoder.ConvertToImage(index != -1 ? (size_t)index : 0, image); |
658974ae VS |
1502 | } |
1503 | ||
1504 | bool wxANIHandler::DoCanRead(wxInputStream& stream) | |
1505 | { | |
72045d57 VZ |
1506 | wxANIDecoder decod; |
1507 | return decod.CanRead(stream); | |
8faef7cc | 1508 | // it's ok to modify the stream position here |
658974ae VS |
1509 | } |
1510 | ||
8faef7cc | 1511 | int wxANIHandler::DoGetImageCount(wxInputStream& stream) |
658974ae | 1512 | { |
72045d57 | 1513 | wxANIDecoder decoder; |
8faef7cc | 1514 | if (!decoder.Load(stream)) // it's ok to modify the stream position here |
658974ae VS |
1515 | return wxNOT_FOUND; |
1516 | ||
72045d57 | 1517 | return decoder.GetFrameCount(); |
658974ae VS |
1518 | } |
1519 | ||
b4c47016 DS |
1520 | static bool CanReadICOOrCUR(wxInputStream *stream, wxUint16 resourceType) |
1521 | { | |
bf34105a DS |
1522 | // It's ok to modify the stream position in this function. |
1523 | ||
5c98cb9b | 1524 | if ( stream->IsSeekable() && stream->SeekI(0) == wxInvalidOffset ) |
bf34105a DS |
1525 | { |
1526 | return false; | |
1527 | } | |
1528 | ||
b4c47016 | 1529 | ICONDIR iconDir; |
bf34105a | 1530 | if ( !stream->Read(&iconDir, sizeof(iconDir)) ) |
b4c47016 DS |
1531 | { |
1532 | return false; | |
1533 | } | |
1534 | ||
1535 | return !iconDir.idReserved // reserved, must be 0 | |
1536 | && wxUINT16_SWAP_ON_BE(iconDir.idType) == resourceType // either 1 or 2 | |
1537 | && iconDir.idCount; // must contain at least one image | |
1538 | } | |
1539 | ||
e30285ab VZ |
1540 | #endif // wxUSE_STREAMS |
1541 | ||
658974ae VS |
1542 | #endif // wxUSE_ICO_CUR |
1543 | ||
e30285ab | 1544 | #endif // wxUSE_IMAGE |