| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: imagbmp.cpp |
| 3 | // Purpose: wxImage BMP,ICO and CUR handlers |
| 4 | // Author: Robert Roebling, Chris Elliott |
| 5 | // RCS-ID: $Id$ |
| 6 | // Copyright: (c) Robert Roebling, Chris Elliott |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | #ifdef __GNUG__ |
| 11 | #pragma implementation "imagbmp.h" |
| 12 | #endif |
| 13 | |
| 14 | // For compilers that support precompilation, includes "wx.h". |
| 15 | #include "wx/wxprec.h" |
| 16 | |
| 17 | #ifdef __BORLANDC__ |
| 18 | #pragma hdrstop |
| 19 | #endif |
| 20 | |
| 21 | #include "wx/defs.h" |
| 22 | |
| 23 | #if wxUSE_IMAGE && wxUSE_STREAMS |
| 24 | |
| 25 | #include "wx/imagbmp.h" |
| 26 | #include "wx/bitmap.h" |
| 27 | #include "wx/debug.h" |
| 28 | #include "wx/log.h" |
| 29 | #include "wx/app.h" |
| 30 | #include "wx/filefn.h" |
| 31 | #include "wx/wfstream.h" |
| 32 | #include "wx/intl.h" |
| 33 | #include "wx/module.h" |
| 34 | #include "wx/quantize.h" |
| 35 | |
| 36 | // For memcpy |
| 37 | #include <string.h> |
| 38 | |
| 39 | #ifdef __SALFORDC__ |
| 40 | #ifdef FAR |
| 41 | #undef FAR |
| 42 | #endif |
| 43 | #endif |
| 44 | |
| 45 | #ifdef __WXMSW__ |
| 46 | #include <windows.h> |
| 47 | #endif |
| 48 | |
| 49 | //----------------------------------------------------------------------------- |
| 50 | // wxBMPHandler |
| 51 | //----------------------------------------------------------------------------- |
| 52 | |
| 53 | IMPLEMENT_DYNAMIC_CLASS(wxBMPHandler,wxImageHandler) |
| 54 | |
| 55 | #ifndef BI_RGB |
| 56 | #define BI_RGB 0 |
| 57 | #define BI_RLE8 1 |
| 58 | #define BI_RLE4 2 |
| 59 | #endif |
| 60 | |
| 61 | #ifndef BI_BITFIELDS |
| 62 | #define BI_BITFIELDS 3 |
| 63 | #endif |
| 64 | |
| 65 | #define poffset (line * width * 3 + column * 3) |
| 66 | |
| 67 | bool wxBMPHandler::SaveFile(wxImage *image, |
| 68 | wxOutputStream& stream, |
| 69 | bool verbose) |
| 70 | { |
| 71 | return SaveDib(image, stream, verbose, TRUE/*IsBmp*/, FALSE/*IsMask*/); |
| 72 | } |
| 73 | |
| 74 | bool wxBMPHandler::SaveDib(wxImage *image, |
| 75 | wxOutputStream& stream, |
| 76 | bool verbose, |
| 77 | bool IsBmp, |
| 78 | bool IsMask) |
| 79 | |
| 80 | { |
| 81 | wxCHECK_MSG( image, FALSE, _T("invalid pointer in wxBMPHandler::SaveFile") ); |
| 82 | |
| 83 | if ( !image->Ok() ) |
| 84 | { |
| 85 | if ( verbose ) |
| 86 | wxLogError(_("BMP: Couldn't save invalid image.")); |
| 87 | return FALSE; |
| 88 | } |
| 89 | |
| 90 | // get the format of the BMP file to save, else use 24bpp |
| 91 | unsigned format = wxBMP_24BPP; |
| 92 | if ( image->HasOption(wxIMAGE_OPTION_BMP_FORMAT) ) |
| 93 | format = image->GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT); |
| 94 | |
| 95 | wxUint16 bpp; // # of bits per pixel |
| 96 | int palette_size; // # of color map entries, ie. 2^bpp colors |
| 97 | |
| 98 | // set the bpp and appropriate palette_size, and do additional checks |
| 99 | if ( (format == wxBMP_1BPP) || (format == wxBMP_1BPP_BW) ) |
| 100 | { |
| 101 | bpp = 1; |
| 102 | palette_size = 2; |
| 103 | } |
| 104 | else if ( format == wxBMP_4BPP ) |
| 105 | { |
| 106 | bpp = 4; |
| 107 | palette_size = 16; |
| 108 | } |
| 109 | else if ( (format == wxBMP_8BPP) || (format == wxBMP_8BPP_GREY) || |
| 110 | (format == wxBMP_8BPP_RED) || (format == wxBMP_8BPP_PALETTE) ) |
| 111 | { |
| 112 | // need to set a wxPalette to use this, HOW TO CHECK IF VALID, SIZE? |
| 113 | if ((format == wxBMP_8BPP_PALETTE) |
| 114 | #if wxUSE_PALETTE |
| 115 | && !image->HasPalette() |
| 116 | #endif // wxUSE_PALETTE |
| 117 | ) |
| 118 | { |
| 119 | if ( verbose ) |
| 120 | wxLogError(_("BMP: wxImage doesn't have own wxPalette.")); |
| 121 | return FALSE; |
| 122 | } |
| 123 | bpp = 8; |
| 124 | palette_size = 256; |
| 125 | } |
| 126 | else // you get 24bpp |
| 127 | { |
| 128 | format = wxBMP_24BPP; |
| 129 | bpp = 24; |
| 130 | palette_size = 0; |
| 131 | } |
| 132 | |
| 133 | unsigned width = image->GetWidth(); |
| 134 | unsigned row_padding = (4 - int(width*bpp/8.0) % 4) % 4; // # bytes to pad to dword |
| 135 | unsigned row_width = int(width * bpp/8.0) + row_padding; // # of bytes per row |
| 136 | |
| 137 | struct |
| 138 | { |
| 139 | // BitmapHeader: |
| 140 | wxUint16 magic; // format magic, always 'BM' |
| 141 | wxUint32 filesize; // total file size, inc. headers |
| 142 | wxUint32 reserved; // for future use |
| 143 | wxUint32 data_offset; // image data offset in the file |
| 144 | |
| 145 | // BitmapInfoHeader: |
| 146 | wxUint32 bih_size; // 2nd part's size |
| 147 | wxUint32 width, height; // bitmap's dimensions |
| 148 | wxUint16 planes; // num of planes |
| 149 | wxUint16 bpp; // bits per pixel |
| 150 | wxUint32 compression; // compression method |
| 151 | wxUint32 size_of_bmp; // size of the bitmap |
| 152 | wxUint32 h_res, v_res; // image resolution in dpi |
| 153 | wxUint32 num_clrs; // number of colors used |
| 154 | wxUint32 num_signif_clrs;// number of significant colors |
| 155 | } hdr; |
| 156 | |
| 157 | wxUint32 hdr_size = 14/*BitmapHeader*/ + 40/*BitmapInfoHeader*/; |
| 158 | |
| 159 | hdr.magic = wxUINT16_SWAP_ON_BE(0x4D42/*'BM'*/); |
| 160 | hdr.filesize = wxUINT32_SWAP_ON_BE( hdr_size + palette_size*4 + |
| 161 | row_width * image->GetHeight() ); |
| 162 | hdr.reserved = 0; |
| 163 | hdr.data_offset = wxUINT32_SWAP_ON_BE(hdr_size + palette_size*4); |
| 164 | |
| 165 | hdr.bih_size = wxUINT32_SWAP_ON_BE(hdr_size - 14); |
| 166 | hdr.width = wxUINT32_SWAP_ON_BE(image->GetWidth()); |
| 167 | if ( IsBmp ) |
| 168 | { |
| 169 | hdr.height = wxUINT32_SWAP_ON_BE(image->GetHeight()); |
| 170 | } |
| 171 | else |
| 172 | { |
| 173 | hdr.height = wxUINT32_SWAP_ON_BE(2 * image->GetHeight()); |
| 174 | } |
| 175 | hdr.planes = wxUINT16_SWAP_ON_BE(1); // always 1 plane |
| 176 | hdr.bpp = wxUINT16_SWAP_ON_BE(bpp); |
| 177 | hdr.compression = 0; // RGB uncompressed |
| 178 | hdr.size_of_bmp = wxUINT32_SWAP_ON_BE(row_width * image->GetHeight()); |
| 179 | hdr.h_res = hdr.v_res = wxUINT32_SWAP_ON_BE(72); // 72dpi is standard |
| 180 | hdr.num_clrs = wxUINT32_SWAP_ON_BE(palette_size); // # colors in colormap |
| 181 | hdr.num_signif_clrs = 0; // all colors are significant |
| 182 | |
| 183 | if ( IsBmp ) |
| 184 | { |
| 185 | if (// VS: looks ugly but compilers tend to do ugly things with structs, |
| 186 | // like aligning hdr.filesize's ofset to dword :( |
| 187 | // VZ: we should add padding then... |
| 188 | !stream.Write(&hdr.magic, 2) || |
| 189 | !stream.Write(&hdr.filesize, 4) || |
| 190 | !stream.Write(&hdr.reserved, 4) || |
| 191 | !stream.Write(&hdr.data_offset, 4) |
| 192 | ) |
| 193 | { |
| 194 | if (verbose) |
| 195 | wxLogError(_("BMP: Couldn't write the file (Bitmap) header.")); |
| 196 | return FALSE; |
| 197 | } |
| 198 | } |
| 199 | if ( !IsMask ) |
| 200 | { |
| 201 | if ( |
| 202 | !stream.Write(&hdr.bih_size, 4) || |
| 203 | !stream.Write(&hdr.width, 4) || |
| 204 | !stream.Write(&hdr.height, 4) || |
| 205 | !stream.Write(&hdr.planes, 2) || |
| 206 | !stream.Write(&hdr.bpp, 2) || |
| 207 | !stream.Write(&hdr.compression, 4) || |
| 208 | !stream.Write(&hdr.size_of_bmp, 4) || |
| 209 | !stream.Write(&hdr.h_res, 4) || |
| 210 | !stream.Write(&hdr.v_res, 4) || |
| 211 | !stream.Write(&hdr.num_clrs, 4) || |
| 212 | !stream.Write(&hdr.num_signif_clrs, 4) |
| 213 | ) |
| 214 | { |
| 215 | if (verbose) |
| 216 | wxLogError(_("BMP: Couldn't write the file (BitmapInfo) header.")); |
| 217 | return FALSE; |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | wxPalette *palette = NULL; // entries for quantized images |
| 222 | wxUint8 *rgbquad = NULL; // for the RGBQUAD bytes for the colormap |
| 223 | wxImage *q_image = NULL; // destination for quantized image |
| 224 | |
| 225 | // if <24bpp use quantization to reduce colors for *some* of the formats |
| 226 | if ( (format == wxBMP_1BPP) || (format == wxBMP_4BPP) || |
| 227 | (format == wxBMP_8BPP) || (format == wxBMP_8BPP_PALETTE) ) |
| 228 | { |
| 229 | // make a new palette and quantize the image |
| 230 | if (format != wxBMP_8BPP_PALETTE) |
| 231 | { |
| 232 | q_image = new wxImage(); |
| 233 | |
| 234 | // I get a delete error using Quantize when desired colors > 236 |
| 235 | int quantize = ((palette_size > 236) ? 236 : palette_size); |
| 236 | // fill the destination too, it gives much nicer 4bpp images |
| 237 | wxQuantize::Quantize( *image, *q_image, &palette, quantize, 0, |
| 238 | wxQUANTIZE_FILL_DESTINATION_IMAGE ); |
| 239 | } |
| 240 | else |
| 241 | { |
| 242 | #if wxUSE_PALETTE |
| 243 | palette = new wxPalette(image->GetPalette()); |
| 244 | #endif // wxUSE_PALETTE |
| 245 | } |
| 246 | |
| 247 | int i; |
| 248 | unsigned char r, g, b; |
| 249 | rgbquad = new wxUint8 [palette_size*4]; |
| 250 | |
| 251 | for (i = 0; i < palette_size; i++) |
| 252 | { |
| 253 | #if wxUSE_PALETTE |
| 254 | if ( !palette->GetRGB(i, &r, &g, &b) ) |
| 255 | #endif // wxUSE_PALETTE |
| 256 | r = g = b = 0; |
| 257 | |
| 258 | rgbquad[i*4] = b; |
| 259 | rgbquad[i*4+1] = g; |
| 260 | rgbquad[i*4+2] = r; |
| 261 | rgbquad[i*4+3] = 0; |
| 262 | } |
| 263 | } |
| 264 | // make a 256 entry greyscale colormap or 2 entry black & white |
| 265 | else if ( (format == wxBMP_8BPP_GREY) || (format == wxBMP_8BPP_RED) || |
| 266 | (format == wxBMP_1BPP_BW) ) |
| 267 | { |
| 268 | int i; |
| 269 | rgbquad = new wxUint8 [palette_size*4]; |
| 270 | |
| 271 | for (i = 0; i < palette_size; i++) |
| 272 | { |
| 273 | // if 1BPP_BW then just 0 and 255 then exit |
| 274 | if (( i > 0) && (format == wxBMP_1BPP_BW)) i = 255; |
| 275 | rgbquad[i*4] = i; |
| 276 | rgbquad[i*4+1] = i; |
| 277 | rgbquad[i*4+2] = i; |
| 278 | rgbquad[i*4+3] = 0; |
| 279 | } |
| 280 | } |
| 281 | |
| 282 | // if the colormap was made, then it needs to be written |
| 283 | if (rgbquad) |
| 284 | { |
| 285 | if ( !IsMask ) |
| 286 | { |
| 287 | if ( !stream.Write(rgbquad, palette_size*4) ) |
| 288 | { |
| 289 | if (verbose) |
| 290 | wxLogError(_("BMP: Couldn't write RGB color map.")); |
| 291 | delete[] rgbquad; |
| 292 | #if wxUSE_PALETTE |
| 293 | delete palette; |
| 294 | #endif // wxUSE_PALETTE |
| 295 | delete q_image; |
| 296 | return FALSE; |
| 297 | } |
| 298 | } |
| 299 | delete []rgbquad; |
| 300 | } |
| 301 | |
| 302 | // pointer to the image data, use quantized if available |
| 303 | wxUint8 *data = (wxUint8*) image->GetData(); |
| 304 | if (q_image) if (q_image->Ok()) data = (wxUint8*) q_image->GetData(); |
| 305 | |
| 306 | wxUint8 *buffer = new wxUint8[row_width]; |
| 307 | memset(buffer, 0, row_width); |
| 308 | int y; unsigned x; |
| 309 | long int pixel; |
| 310 | |
| 311 | for (y = image->GetHeight() -1; y >= 0; y--) |
| 312 | { |
| 313 | if ( format == wxBMP_24BPP ) // 3 bytes per pixel red,green,blue |
| 314 | { |
| 315 | for ( x = 0; x < width; x++ ) |
| 316 | { |
| 317 | pixel = 3*(y*width + x); |
| 318 | |
| 319 | buffer[3*x ] = data[pixel+2]; |
| 320 | buffer[3*x + 1] = data[pixel+1]; |
| 321 | buffer[3*x + 2] = data[pixel]; |
| 322 | } |
| 323 | } |
| 324 | else if ((format == wxBMP_8BPP) || // 1 byte per pixel in color |
| 325 | (format == wxBMP_8BPP_PALETTE)) |
| 326 | { |
| 327 | for (x = 0; x < width; x++) |
| 328 | { |
| 329 | pixel = 3*(y*width + x); |
| 330 | #if wxUSE_PALETTE |
| 331 | buffer[x] = palette->GetPixel( data[pixel], |
| 332 | data[pixel+1], |
| 333 | data[pixel+2] ); |
| 334 | #else |
| 335 | // FIXME: what should this be? use some std palette maybe? |
| 336 | buffer[x] = 0; |
| 337 | #endif // wxUSE_PALETTE |
| 338 | } |
| 339 | } |
| 340 | else if ( format == wxBMP_8BPP_GREY ) // 1 byte per pix, rgb ave to grey |
| 341 | { |
| 342 | for (x = 0; x < width; x++) |
| 343 | { |
| 344 | pixel = 3*(y*width + x); |
| 345 | buffer[x] = (wxUint8)(.299*data[pixel] + |
| 346 | .587*data[pixel+1] + |
| 347 | .114*data[pixel+2]); |
| 348 | } |
| 349 | } |
| 350 | else if ( format == wxBMP_8BPP_RED ) // 1 byte per pixel, red as greys |
| 351 | { |
| 352 | for (x = 0; x < width; x++) |
| 353 | { |
| 354 | buffer[x] = (wxUint8)data[3*(y*width + x)]; |
| 355 | } |
| 356 | } |
| 357 | else if ( format == wxBMP_4BPP ) // 4 bpp in color |
| 358 | { |
| 359 | for (x = 0; x < width; x+=2) |
| 360 | { |
| 361 | pixel = 3*(y*width + x); |
| 362 | |
| 363 | // fill buffer, ignore if > width |
| 364 | #if wxUSE_PALETTE |
| 365 | buffer[x/2] = |
| 366 | ((wxUint8)palette->GetPixel(data[pixel], |
| 367 | data[pixel+1], |
| 368 | data[pixel+2]) << 4) | |
| 369 | (((x+1) > width) |
| 370 | ? 0 |
| 371 | : ((wxUint8)palette->GetPixel(data[pixel+3], |
| 372 | data[pixel+4], |
| 373 | data[pixel+5]) )); |
| 374 | #else |
| 375 | // FIXME: what should this be? use some std palette maybe? |
| 376 | buffer[x/2] = 0; |
| 377 | #endif // wxUSE_PALETTE |
| 378 | } |
| 379 | } |
| 380 | else if ( format == wxBMP_1BPP ) // 1 bpp in "color" |
| 381 | { |
| 382 | for (x = 0; x < width; x+=8) |
| 383 | { |
| 384 | pixel = 3*(y*width + x); |
| 385 | |
| 386 | #if wxUSE_PALETTE |
| 387 | buffer[x/8] = ((wxUint8)palette->GetPixel(data[pixel], data[pixel+1], data[pixel+2]) << 7) | |
| 388 | (((x+1) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+3], data[pixel+4], data[pixel+5]) << 6)) | |
| 389 | (((x+2) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+6], data[pixel+7], data[pixel+8]) << 5)) | |
| 390 | (((x+3) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+9], data[pixel+10], data[pixel+11]) << 4)) | |
| 391 | (((x+4) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+12], data[pixel+13], data[pixel+14]) << 3)) | |
| 392 | (((x+5) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+15], data[pixel+16], data[pixel+17]) << 2)) | |
| 393 | (((x+6) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+18], data[pixel+19], data[pixel+20]) << 1)) | |
| 394 | (((x+7) > width) ? 0 : ((wxUint8)palette->GetPixel(data[pixel+21], data[pixel+22], data[pixel+23]) )); |
| 395 | #else |
| 396 | // FIXME: what should this be? use some std palette maybe? |
| 397 | buffer[x/8] = 0; |
| 398 | #endif // wxUSE_PALETTE |
| 399 | } |
| 400 | } |
| 401 | else if ( format == wxBMP_1BPP_BW ) // 1 bpp B&W colormap from red color ONLY |
| 402 | { |
| 403 | for (x = 0; x < width; x+=8) |
| 404 | { |
| 405 | pixel = 3*(y*width + x); |
| 406 | |
| 407 | buffer[x/8] = |
| 408 | (((wxUint8)(data[pixel] /128.)) << 7) | |
| 409 | (((x+1) > width) ? 0 : (((wxUint8)(data[pixel+3] /128.)) << 6)) | |
| 410 | (((x+2) > width) ? 0 : (((wxUint8)(data[pixel+6] /128.)) << 5)) | |
| 411 | (((x+3) > width) ? 0 : (((wxUint8)(data[pixel+9] /128.)) << 4)) | |
| 412 | (((x+4) > width) ? 0 : (((wxUint8)(data[pixel+12]/128.)) << 3)) | |
| 413 | (((x+5) > width) ? 0 : (((wxUint8)(data[pixel+15]/128.)) << 2)) | |
| 414 | (((x+6) > width) ? 0 : (((wxUint8)(data[pixel+18]/128.)) << 1)) | |
| 415 | (((x+7) > width) ? 0 : (((wxUint8)(data[pixel+21]/128.)) )); |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | if ( !stream.Write(buffer, row_width) ) |
| 420 | { |
| 421 | if (verbose) |
| 422 | wxLogError(_("BMP: Couldn't write data.")); |
| 423 | delete[] buffer; |
| 424 | #if wxUSE_PALETTE |
| 425 | delete palette; |
| 426 | #endif // wxUSE_PALETTE |
| 427 | delete q_image; |
| 428 | return FALSE; |
| 429 | } |
| 430 | } |
| 431 | delete[] buffer; |
| 432 | #if wxUSE_PALETTE |
| 433 | delete palette; |
| 434 | #endif // wxUSE_PALETTE |
| 435 | delete q_image; |
| 436 | |
| 437 | return TRUE; |
| 438 | } |
| 439 | |
| 440 | |
| 441 | typedef struct |
| 442 | { |
| 443 | unsigned char r, g, b; |
| 444 | } _cmap; |
| 445 | |
| 446 | bool wxBMPHandler::DoLoadDib(wxImage * image, int width, int height, |
| 447 | int bpp, int ncolors, int comp, |
| 448 | off_t bmpOffset, wxInputStream& stream, |
| 449 | bool verbose, bool IsBmp, bool hasPalette) |
| 450 | { |
| 451 | wxInt32 aDword, rmask = 0, gmask = 0, bmask = 0; |
| 452 | int rshift = 0, gshift = 0, bshift = 0; |
| 453 | wxInt32 dbuf[4]; |
| 454 | wxInt8 bbuf[4]; |
| 455 | wxUint8 aByte; |
| 456 | wxUint16 aWord; |
| 457 | |
| 458 | // allocate space for palette if needed: |
| 459 | _cmap *cmap = NULL; |
| 460 | |
| 461 | if ( bpp < 16 ) |
| 462 | { |
| 463 | cmap = new _cmap[ncolors]; |
| 464 | if ( !cmap ) |
| 465 | { |
| 466 | if (verbose) |
| 467 | wxLogError(_("BMP: Couldn't allocate memory.")); |
| 468 | return FALSE; |
| 469 | } |
| 470 | } |
| 471 | else |
| 472 | cmap = NULL; |
| 473 | |
| 474 | // destroy existing here instead of: |
| 475 | image->Destroy(); |
| 476 | image->Create(width, height); |
| 477 | |
| 478 | unsigned char *ptr = image->GetData(); |
| 479 | |
| 480 | if ( !ptr ) |
| 481 | { |
| 482 | if ( verbose ) |
| 483 | wxLogError( _("BMP: Couldn't allocate memory.") ); |
| 484 | if ( cmap ) |
| 485 | delete[] cmap; |
| 486 | return FALSE; |
| 487 | } |
| 488 | |
| 489 | // Reading the palette, if it exists: |
| 490 | if ( bpp < 16 && ncolors != 0 ) |
| 491 | { |
| 492 | unsigned char* r = new unsigned char[ncolors]; |
| 493 | unsigned char* g = new unsigned char[ncolors]; |
| 494 | unsigned char* b = new unsigned char[ncolors]; |
| 495 | for (int j = 0; j < ncolors; j++) |
| 496 | { |
| 497 | if (hasPalette) |
| 498 | { |
| 499 | stream.Read(bbuf, 4); |
| 500 | cmap[j].b = bbuf[0]; |
| 501 | cmap[j].g = bbuf[1]; |
| 502 | cmap[j].r = bbuf[2]; |
| 503 | |
| 504 | r[j] = cmap[j].r; |
| 505 | g[j] = cmap[j].g; |
| 506 | b[j] = cmap[j].b; |
| 507 | } |
| 508 | else |
| 509 | { |
| 510 | //used in reading .ico file mask |
| 511 | r[j] = cmap[j].r = j * 255; |
| 512 | g[j] = cmap[j].g = j * 255; |
| 513 | b[j] = cmap[j].b = j * 255; |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | #if wxUSE_PALETTE |
| 518 | // Set the palette for the wxImage |
| 519 | image->SetPalette(wxPalette(ncolors, r, g, b)); |
| 520 | #endif // wxUSE_PALETTE |
| 521 | |
| 522 | delete[] r; |
| 523 | delete[] g; |
| 524 | delete[] b; |
| 525 | } |
| 526 | else if ( bpp == 16 || bpp == 32 ) |
| 527 | { |
| 528 | if ( comp == BI_BITFIELDS ) |
| 529 | { |
| 530 | int bit = 0; |
| 531 | stream.Read(dbuf, 4 * 3); |
| 532 | bmask = wxINT32_SWAP_ON_BE(dbuf[0]); |
| 533 | gmask = wxINT32_SWAP_ON_BE(dbuf[1]); |
| 534 | rmask = wxINT32_SWAP_ON_BE(dbuf[2]); |
| 535 | // find shift amount.. ugly, but i can't think of a better way: |
| 536 | for (bit = 0; bit < bpp; bit++) |
| 537 | { |
| 538 | if (bmask & (1 << bit)) |
| 539 | bshift = bit; |
| 540 | if (gmask & (1 << bit)) |
| 541 | gshift = bit; |
| 542 | if (rmask & (1 << bit)) |
| 543 | rshift = bit; |
| 544 | } |
| 545 | } |
| 546 | else if ( bpp == 16 ) |
| 547 | { |
| 548 | rmask = 0x7C00; |
| 549 | gmask = 0x03E0; |
| 550 | bmask = 0x001F; |
| 551 | rshift = 10; |
| 552 | gshift = 5; |
| 553 | bshift = 0; |
| 554 | } |
| 555 | else if ( bpp == 32 ) |
| 556 | { |
| 557 | rmask = 0x00FF0000; |
| 558 | gmask = 0x0000FF00; |
| 559 | bmask = 0x000000FF; |
| 560 | rshift = 16; |
| 561 | gshift = 8; |
| 562 | bshift = 0; |
| 563 | } |
| 564 | } |
| 565 | |
| 566 | /* |
| 567 | * Reading the image data |
| 568 | */ |
| 569 | if ( IsBmp ) |
| 570 | stream.SeekI(bmpOffset); // else icon, just carry on |
| 571 | |
| 572 | unsigned char *data = ptr; |
| 573 | |
| 574 | /* set the whole image to the background color */ |
| 575 | if ( bpp < 16 && (comp == BI_RLE4 || comp == BI_RLE8) ) |
| 576 | { |
| 577 | for (int i = 0; i < width * height; i++) |
| 578 | { |
| 579 | *ptr++ = cmap[0].r; |
| 580 | *ptr++ = cmap[0].g; |
| 581 | *ptr++ = cmap[0].b; |
| 582 | } |
| 583 | ptr = data; |
| 584 | } |
| 585 | |
| 586 | int line = 0; |
| 587 | int column = 0; |
| 588 | int linesize = ((width * bpp + 31) / 32) * 4; |
| 589 | |
| 590 | /* BMPs are stored upside down */ |
| 591 | for ( line = (height - 1); line >= 0; line-- ) |
| 592 | { |
| 593 | int linepos = 0; |
| 594 | for ( column = 0; column < width; ) |
| 595 | { |
| 596 | if ( bpp < 16 ) |
| 597 | { |
| 598 | int index = 0; |
| 599 | linepos++; |
| 600 | aByte = stream.GetC(); |
| 601 | if ( bpp == 1 ) |
| 602 | { |
| 603 | int bit = 0; |
| 604 | for (bit = 0; bit < 8 && column < width; bit++) |
| 605 | { |
| 606 | index = ((aByte & (0x80 >> bit)) ? 1 : 0); |
| 607 | ptr[poffset] = cmap[index].r; |
| 608 | ptr[poffset + 1] = cmap[index].g; |
| 609 | ptr[poffset + 2] = cmap[index].b; |
| 610 | column++; |
| 611 | } |
| 612 | } |
| 613 | else if ( bpp == 4 ) |
| 614 | { |
| 615 | if ( comp == BI_RLE4 ) |
| 616 | { |
| 617 | if ( verbose ) |
| 618 | wxLogError(_("DIB Header: Cannot deal with 4bit encoded yet.")); |
| 619 | image->Destroy(); |
| 620 | delete[] cmap; |
| 621 | return FALSE; |
| 622 | } |
| 623 | else |
| 624 | { |
| 625 | int nibble = 0; |
| 626 | for (nibble = 0; nibble < 2 && column < width; nibble++) |
| 627 | { |
| 628 | index = ((aByte & (0xF0 >> nibble * 4)) >> (!nibble * 4)); |
| 629 | if ( index >= 16 ) |
| 630 | index = 15; |
| 631 | ptr[poffset] = cmap[index].r; |
| 632 | ptr[poffset + 1] = cmap[index].g; |
| 633 | ptr[poffset + 2] = cmap[index].b; |
| 634 | column++; |
| 635 | } |
| 636 | } |
| 637 | } |
| 638 | else if ( bpp == 8 ) |
| 639 | { |
| 640 | if ( comp == BI_RLE8 ) |
| 641 | { |
| 642 | unsigned char first; |
| 643 | first = aByte; |
| 644 | aByte = stream.GetC(); |
| 645 | if ( first == 0 ) |
| 646 | { |
| 647 | if ( aByte == 0 ) |
| 648 | { |
| 649 | /* column = width; */ |
| 650 | } |
| 651 | else if ( aByte == 1 ) |
| 652 | { |
| 653 | column = width; |
| 654 | line = -1; |
| 655 | } |
| 656 | else if ( aByte == 2 ) |
| 657 | { |
| 658 | aByte = stream.GetC(); |
| 659 | column += aByte; |
| 660 | linepos = column * bpp / 8; |
| 661 | aByte = stream.GetC(); |
| 662 | line += aByte; |
| 663 | } |
| 664 | else |
| 665 | { |
| 666 | int absolute = aByte; |
| 667 | for (int k = 0; k < absolute; k++) |
| 668 | { |
| 669 | linepos++; |
| 670 | aByte = stream.GetC(); |
| 671 | ptr[poffset ] = cmap[aByte].r; |
| 672 | ptr[poffset + 1] = cmap[aByte].g; |
| 673 | ptr[poffset + 2] = cmap[aByte].b; |
| 674 | column++; |
| 675 | } |
| 676 | if ( absolute & 0x01 ) |
| 677 | aByte = stream.GetC(); |
| 678 | } |
| 679 | } |
| 680 | else |
| 681 | { |
| 682 | for ( int l = 0; l < first && column < width; l++ ) |
| 683 | { |
| 684 | ptr[poffset ] = cmap[aByte].r; |
| 685 | ptr[poffset + 1] = cmap[aByte].g; |
| 686 | ptr[poffset + 2] = cmap[aByte].b; |
| 687 | column++; |
| 688 | linepos++; |
| 689 | } |
| 690 | } |
| 691 | } |
| 692 | else |
| 693 | { |
| 694 | ptr[poffset ] = cmap[aByte].r; |
| 695 | ptr[poffset + 1] = cmap[aByte].g; |
| 696 | ptr[poffset + 2] = cmap[aByte].b; |
| 697 | column++; |
| 698 | // linepos += size; seems to be wrong, RR |
| 699 | } |
| 700 | } |
| 701 | } |
| 702 | else if ( bpp == 24 ) |
| 703 | { |
| 704 | stream.Read(bbuf, 3); |
| 705 | linepos += 3; |
| 706 | ptr[poffset ] = (unsigned char)bbuf[2]; |
| 707 | ptr[poffset + 1] = (unsigned char)bbuf[1]; |
| 708 | ptr[poffset + 2] = (unsigned char)bbuf[0]; |
| 709 | column++; |
| 710 | } |
| 711 | else if ( bpp == 16 ) |
| 712 | { |
| 713 | unsigned char temp; |
| 714 | stream.Read(&aWord, 2); |
| 715 | aWord = wxUINT16_SWAP_ON_BE(aWord); |
| 716 | linepos += 2; |
| 717 | temp = (aWord & rmask) >> rshift; |
| 718 | ptr[poffset] = temp; |
| 719 | temp = (aWord & gmask) >> gshift; |
| 720 | ptr[poffset + 1] = temp; |
| 721 | temp = (aWord & bmask) >> bshift; |
| 722 | ptr[poffset + 2] = temp; |
| 723 | column++; |
| 724 | } |
| 725 | else |
| 726 | { |
| 727 | unsigned char temp; |
| 728 | stream.Read(&aDword, 4); |
| 729 | aDword = wxINT32_SWAP_ON_BE(aDword); |
| 730 | linepos += 4; |
| 731 | temp = (aDword & rmask) >> rshift; |
| 732 | ptr[poffset] = temp; |
| 733 | temp = (aDword & gmask) >> gshift; |
| 734 | ptr[poffset + 1] = temp; |
| 735 | temp = (aDword & bmask) >> bshift; |
| 736 | ptr[poffset + 2] = temp; |
| 737 | column++; |
| 738 | } |
| 739 | } |
| 740 | while ( (linepos < linesize) && (comp != 1) && (comp != 2) ) |
| 741 | { |
| 742 | stream.Read(&aByte, 1); |
| 743 | linepos += 1; |
| 744 | if ( stream.LastError() != wxStream_NOERROR ) |
| 745 | break; |
| 746 | } |
| 747 | } |
| 748 | if (cmap) |
| 749 | delete[] cmap; |
| 750 | |
| 751 | image->SetMask(FALSE); |
| 752 | |
| 753 | return ( stream.LastError() == wxSTREAM_NO_ERROR || stream.LastError() == wxSTREAM_EOF ); |
| 754 | } |
| 755 | |
| 756 | bool wxBMPHandler::LoadDib(wxImage *image, wxInputStream& stream, |
| 757 | bool verbose, bool IsBmp) |
| 758 | { |
| 759 | wxUint16 aWord; |
| 760 | wxInt32 dbuf[4]; |
| 761 | wxInt8 bbuf[4]; |
| 762 | off_t offset; |
| 763 | |
| 764 | offset = 0; // keep gcc quiet |
| 765 | if ( IsBmp ) |
| 766 | { |
| 767 | // read the header off the .BMP format file |
| 768 | |
| 769 | offset = stream.TellI(); |
| 770 | if (offset == wxInvalidOffset) offset = 0; |
| 771 | |
| 772 | stream.Read(bbuf, 2); |
| 773 | stream.Read(dbuf, 16); |
| 774 | } |
| 775 | else |
| 776 | { |
| 777 | stream.Read(dbuf, 4); |
| 778 | } |
| 779 | #if 0 // unused |
| 780 | wxInt32 size = wxINT32_SWAP_ON_BE(dbuf[0]); |
| 781 | #endif |
| 782 | offset = offset + wxINT32_SWAP_ON_BE(dbuf[2]); |
| 783 | |
| 784 | stream.Read(dbuf, 4 * 2); |
| 785 | int width = (int)wxINT32_SWAP_ON_BE(dbuf[0]); |
| 786 | int height = (int)wxINT32_SWAP_ON_BE(dbuf[1]); |
| 787 | if ( !IsBmp)height = height / 2; // for icons divide by 2 |
| 788 | |
| 789 | if ( width > 32767 ) |
| 790 | { |
| 791 | if (verbose) |
| 792 | wxLogError( _("DIB Header: Image width > 32767 pixels for file.") ); |
| 793 | return FALSE; |
| 794 | } |
| 795 | if ( height > 32767 ) |
| 796 | { |
| 797 | if (verbose) |
| 798 | wxLogError( _("DIB Header: Image height > 32767 pixels for file.") ); |
| 799 | return FALSE; |
| 800 | } |
| 801 | |
| 802 | stream.Read(&aWord, 2); |
| 803 | /* |
| 804 | TODO |
| 805 | int planes = (int)wxUINT16_SWAP_ON_BE( aWord ); |
| 806 | */ |
| 807 | stream.Read(&aWord, 2); |
| 808 | int bpp = (int)wxUINT16_SWAP_ON_BE(aWord); |
| 809 | if ( bpp != 1 && bpp != 4 && bpp != 8 && bpp != 16 && bpp != 24 && bpp != 32 ) |
| 810 | { |
| 811 | if (verbose) |
| 812 | wxLogError( _("DIB Header: Unknown bitdepth in file.") ); |
| 813 | return FALSE; |
| 814 | } |
| 815 | |
| 816 | stream.Read(dbuf, 4 * 4); |
| 817 | int comp = (int)wxINT32_SWAP_ON_BE(dbuf[0]); |
| 818 | if ( comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 && |
| 819 | comp != BI_BITFIELDS ) |
| 820 | { |
| 821 | if (verbose) |
| 822 | wxLogError( _("DIB Header: Unknown encoding in file.") ); |
| 823 | return FALSE; |
| 824 | } |
| 825 | |
| 826 | stream.Read(dbuf, 4 * 2); |
| 827 | int ncolors = (int)wxINT32_SWAP_ON_BE( dbuf[0] ); |
| 828 | if (ncolors == 0) |
| 829 | ncolors = 1 << bpp; |
| 830 | /* some more sanity checks */ |
| 831 | if (((comp == BI_RLE4) && (bpp != 4)) || |
| 832 | ((comp == BI_RLE8) && (bpp != 8)) || |
| 833 | ((comp == BI_BITFIELDS) && (bpp != 16 && bpp != 32))) |
| 834 | { |
| 835 | if (verbose) |
| 836 | wxLogError( _("DIB Header: Encoding doesn't match bitdepth.") ); |
| 837 | return FALSE; |
| 838 | } |
| 839 | |
| 840 | //read DIB; this is the BMP image or the XOR part of an icon image |
| 841 | if ( !DoLoadDib(image, width, height, bpp, ncolors, comp, offset, stream, |
| 842 | verbose, IsBmp, TRUE) ) |
| 843 | { |
| 844 | if (verbose) |
| 845 | wxLogError( _("Error in reading image DIB .") ); |
| 846 | return FALSE; |
| 847 | } |
| 848 | |
| 849 | if ( !IsBmp ) |
| 850 | { |
| 851 | //read Icon mask which is monochrome |
| 852 | //there is no palette, so we will create one |
| 853 | wxImage mask; |
| 854 | if ( !DoLoadDib(&mask, width, height, 1, 2, BI_RGB, offset, stream, |
| 855 | verbose, IsBmp, FALSE) ) |
| 856 | { |
| 857 | if (verbose) |
| 858 | wxLogError( _("ICO: Error in reading mask DIB.") ); |
| 859 | return FALSE; |
| 860 | } |
| 861 | image->SetMaskFromImage(mask, 255, 255, 255); |
| 862 | |
| 863 | } |
| 864 | |
| 865 | return TRUE; |
| 866 | } |
| 867 | |
| 868 | bool wxBMPHandler::LoadFile(wxImage *image, wxInputStream& stream, |
| 869 | bool verbose, int WXUNUSED(index)) |
| 870 | { |
| 871 | // Read a single DIB fom the file: |
| 872 | return LoadDib(image, stream, verbose, TRUE/*isBmp*/); |
| 873 | } |
| 874 | |
| 875 | bool wxBMPHandler::DoCanRead(wxInputStream& stream) |
| 876 | { |
| 877 | unsigned char hdr[2]; |
| 878 | |
| 879 | if ( !stream.Read(hdr, WXSIZEOF(hdr)) ) |
| 880 | return FALSE; |
| 881 | |
| 882 | // do we have the BMP file signature? |
| 883 | return hdr[0] == 'B' && hdr[1] == 'M'; |
| 884 | } |
| 885 | |
| 886 | |
| 887 | #if wxUSE_ICO_CUR |
| 888 | //----------------------------------------------------------------------------- |
| 889 | // wxICOHandler |
| 890 | //----------------------------------------------------------------------------- |
| 891 | |
| 892 | IMPLEMENT_DYNAMIC_CLASS(wxICOHandler, wxBMPHandler) |
| 893 | |
| 894 | struct ICONDIRENTRY |
| 895 | { |
| 896 | wxUint8 bWidth; // Width of the image |
| 897 | wxUint8 bHeight; // Height of the image (times 2) |
| 898 | wxUint8 bColorCount; // Number of colors in image (0 if >=8bpp) |
| 899 | wxUint8 bReserved; // Reserved |
| 900 | |
| 901 | // these two are different in icons and cursors: |
| 902 | // icon or cursor |
| 903 | wxUint16 wPlanes; // Color Planes or XHotSpot |
| 904 | wxUint16 wBitCount; // Bits per pixel or YHotSpot |
| 905 | |
| 906 | wxUint32 dwBytesInRes; // how many bytes in this resource? |
| 907 | wxUint32 dwImageOffset; // where in the file is this image |
| 908 | }; |
| 909 | |
| 910 | struct ICONDIR |
| 911 | { |
| 912 | wxUint16 idReserved; // Reserved |
| 913 | wxUint16 idType; // resource type (1 for icons, 2 for cursors) |
| 914 | wxUint16 idCount; // how many images? |
| 915 | }; |
| 916 | |
| 917 | |
| 918 | bool wxICOHandler::SaveFile(wxImage *image, |
| 919 | wxOutputStream& stream, |
| 920 | bool verbose) |
| 921 | |
| 922 | { |
| 923 | bool bResult = FALSE; |
| 924 | //sanity check; icon must be less than 127 pixels high and 255 wide |
| 925 | if ( image->GetHeight () > 127 ) |
| 926 | { |
| 927 | if ( verbose ) |
| 928 | wxLogError(_("ICO: Image too tall for an icon.")); |
| 929 | return FALSE; |
| 930 | } |
| 931 | if ( image->GetWidth () > 255 ) |
| 932 | { |
| 933 | if ( verbose ) |
| 934 | wxLogError(_("ICO: Image too wide for an icon.")); |
| 935 | return FALSE; |
| 936 | } |
| 937 | |
| 938 | int images = 1; // only generate one image |
| 939 | |
| 940 | // VS: This is a hack of sort - since ICO and CUR files are almost |
| 941 | // identical, we have all the meat in wxICOHandler and check for |
| 942 | // the actual (handler) type when the code has to distinguish between |
| 943 | // the two formats |
| 944 | int type = (this->GetType() == wxBITMAP_TYPE_CUR) ? 2 : 1; |
| 945 | |
| 946 | // write a header, (ICONDIR) |
| 947 | // Calculate the header size |
| 948 | wxUint32 offset = 3 * sizeof(wxUint16); |
| 949 | |
| 950 | ICONDIR IconDir; |
| 951 | IconDir.idReserved = 0; |
| 952 | IconDir.idType = wxUINT16_SWAP_ON_BE(type); |
| 953 | IconDir.idCount = wxUINT16_SWAP_ON_BE(images); |
| 954 | stream.Write(&IconDir.idReserved, sizeof(IconDir.idReserved)); |
| 955 | stream.Write(&IconDir.idType, sizeof(IconDir.idType)); |
| 956 | stream.Write(&IconDir.idCount, sizeof(IconDir.idCount)); |
| 957 | if ( !stream.IsOk() ) |
| 958 | { |
| 959 | if ( verbose ) |
| 960 | wxLogError(_("ICO: Error writing the image file!")); |
| 961 | return FALSE; |
| 962 | } |
| 963 | |
| 964 | // for each iamage write a description ICONDIRENTRY: |
| 965 | ICONDIRENTRY icondirentry; |
| 966 | for (int i = 0; i < images; i++) |
| 967 | { |
| 968 | wxImage mask; |
| 969 | |
| 970 | if ( image->HasMask() ) |
| 971 | { |
| 972 | // make another image with black/white: |
| 973 | mask = image->ConvertToMono (image->GetMaskRed(), image->GetMaskGreen(), image->GetMaskBlue() ); |
| 974 | |
| 975 | // now we need to change the masked regions to black: |
| 976 | unsigned char r = image->GetMaskRed(); |
| 977 | unsigned char g = image->GetMaskGreen(); |
| 978 | unsigned char b = image->GetMaskBlue(); |
| 979 | if ( (r != 0) || (g != 0) || (b != 0) ) |
| 980 | { |
| 981 | // Go round and apply black to the masked bits: |
| 982 | int i, j; |
| 983 | for (i = 0; i < mask.GetWidth(); i++) |
| 984 | { |
| 985 | for (j = 0; j < mask.GetHeight(); j++) |
| 986 | { |
| 987 | if ((r == mask.GetRed(i, j)) && |
| 988 | (g == mask.GetGreen(i, j))&& |
| 989 | (b == mask.GetBlue(i, j)) ) |
| 990 | image->SetRGB(i, j, 0, 0, 0 ); |
| 991 | } |
| 992 | } |
| 993 | } |
| 994 | } |
| 995 | else |
| 996 | { |
| 997 | // just make a black mask all over: |
| 998 | mask = image->Copy(); |
| 999 | int i, j; |
| 1000 | for (i = 0; i < mask.GetWidth(); i++) |
| 1001 | for (j = 0; j < mask.GetHeight(); j++) |
| 1002 | mask.SetRGB(i, j, 0, 0, 0 ); |
| 1003 | } |
| 1004 | // Set the formats for image and mask |
| 1005 | // (Windows never saves with more than 8 colors): |
| 1006 | image->SetOption(wxIMAGE_OPTION_BMP_FORMAT, wxBMP_8BPP); |
| 1007 | |
| 1008 | // monochome bitmap: |
| 1009 | mask.SetOption(wxIMAGE_OPTION_BMP_FORMAT, wxBMP_1BPP_BW); |
| 1010 | bool IsBmp = FALSE; |
| 1011 | bool IsMask = FALSE; |
| 1012 | |
| 1013 | //calculate size and offset of image and mask |
| 1014 | wxCountingOutputStream cStream; |
| 1015 | bResult = SaveDib(image, cStream, verbose, IsBmp, IsMask); |
| 1016 | if ( !bResult ) |
| 1017 | { |
| 1018 | if ( verbose ) |
| 1019 | wxLogError(_("ICO: Error writing the image file!")); |
| 1020 | return FALSE; |
| 1021 | } |
| 1022 | IsMask = TRUE; |
| 1023 | |
| 1024 | bResult = SaveDib(&mask, cStream, verbose, IsBmp, IsMask); |
| 1025 | if ( !bResult ) |
| 1026 | { |
| 1027 | if ( verbose ) |
| 1028 | wxLogError(_("ICO: Error writing the image file!")); |
| 1029 | return FALSE; |
| 1030 | } |
| 1031 | wxUint32 Size = cStream.GetSize(); |
| 1032 | |
| 1033 | // wxCountingOutputStream::Ok() always returns TRUE for now and this |
| 1034 | // "if" provokes VC++ warnings in optimized build |
| 1035 | #if 0 |
| 1036 | if ( !cStream.Ok() ) |
| 1037 | { |
| 1038 | if ( verbose ) |
| 1039 | wxLogError(_("ICO: Error writing the image file!")); |
| 1040 | return FALSE; |
| 1041 | } |
| 1042 | #endif // 0 |
| 1043 | |
| 1044 | offset = offset + sizeof(ICONDIRENTRY); |
| 1045 | |
| 1046 | icondirentry.bWidth = image->GetWidth(); |
| 1047 | icondirentry.bHeight = 2 * image->GetHeight(); |
| 1048 | icondirentry.bColorCount = 0; |
| 1049 | icondirentry.bReserved = 0; |
| 1050 | icondirentry.wPlanes = wxUINT16_SWAP_ON_BE(1); |
| 1051 | icondirentry.wBitCount = wxUINT16_SWAP_ON_BE(wxBMP_8BPP); |
| 1052 | if ( type == 2 /*CUR*/) |
| 1053 | { |
| 1054 | int hx = image->HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X) ? |
| 1055 | image->GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) : |
| 1056 | image->GetWidth() / 2; |
| 1057 | int hy = image->HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ? |
| 1058 | image->GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) : |
| 1059 | image->GetHeight() / 2; |
| 1060 | |
| 1061 | // actually write the values of the hot spot here: |
| 1062 | icondirentry.wPlanes = wxUINT16_SWAP_ON_BE((wxUint16)hx); |
| 1063 | icondirentry.wBitCount = wxUINT16_SWAP_ON_BE((wxUint16)hy); |
| 1064 | } |
| 1065 | icondirentry.dwBytesInRes = wxUINT32_SWAP_ON_BE(Size); |
| 1066 | icondirentry.dwImageOffset = wxUINT32_SWAP_ON_BE(offset); |
| 1067 | |
| 1068 | // increase size to allow for the data written: |
| 1069 | offset += Size; |
| 1070 | |
| 1071 | // write to stream: |
| 1072 | stream.Write(&icondirentry.bWidth, sizeof(icondirentry.bWidth)); |
| 1073 | stream.Write(&icondirentry.bHeight, sizeof(icondirentry.bHeight)); |
| 1074 | stream.Write(&icondirentry.bColorCount, sizeof(icondirentry.bColorCount)); |
| 1075 | stream.Write(&icondirentry.bReserved, sizeof(icondirentry.bReserved)); |
| 1076 | stream.Write(&icondirentry.wPlanes, sizeof(icondirentry.wPlanes)); |
| 1077 | stream.Write(&icondirentry.wBitCount, sizeof(icondirentry.wBitCount)); |
| 1078 | stream.Write(&icondirentry.dwBytesInRes, sizeof(icondirentry.dwBytesInRes)); |
| 1079 | stream.Write(&icondirentry.dwImageOffset, sizeof(icondirentry.dwImageOffset)); |
| 1080 | if ( !stream.IsOk() ) |
| 1081 | { |
| 1082 | if ( verbose ) |
| 1083 | wxLogError(_("ICO: Error writing the image file!")); |
| 1084 | return FALSE; |
| 1085 | } |
| 1086 | |
| 1087 | // actually save it: |
| 1088 | IsMask = FALSE; |
| 1089 | bResult = SaveDib(image, stream, verbose, IsBmp, IsMask); |
| 1090 | if ( !bResult ) |
| 1091 | { |
| 1092 | if ( verbose ) |
| 1093 | wxLogError(_("ICO: Error writing the image file!")); |
| 1094 | return FALSE; |
| 1095 | } |
| 1096 | IsMask = TRUE; |
| 1097 | |
| 1098 | bResult = SaveDib(&mask, stream, verbose, IsBmp, IsMask); |
| 1099 | if ( !bResult ) |
| 1100 | { |
| 1101 | if ( verbose ) |
| 1102 | wxLogError(_("ICO: Error writing the image file!")); |
| 1103 | return FALSE; |
| 1104 | } |
| 1105 | |
| 1106 | } // end of for loop |
| 1107 | |
| 1108 | return TRUE; |
| 1109 | } |
| 1110 | |
| 1111 | bool wxICOHandler::LoadFile(wxImage *image, wxInputStream& stream, |
| 1112 | bool verbose, int index) |
| 1113 | { |
| 1114 | stream.SeekI(0); |
| 1115 | return DoLoadFile(image, stream, verbose, index); |
| 1116 | } |
| 1117 | |
| 1118 | bool wxICOHandler::DoLoadFile(wxImage *image, wxInputStream& stream, |
| 1119 | bool WXUNUSED(verbose), int index) |
| 1120 | { |
| 1121 | bool bResult = FALSE; |
| 1122 | bool IsBmp = FALSE; |
| 1123 | |
| 1124 | ICONDIR IconDir; |
| 1125 | |
| 1126 | off_t iPos = stream.TellI(); |
| 1127 | stream.Read(&IconDir, sizeof(IconDir)); |
| 1128 | wxUint16 nIcons = wxUINT16_SWAP_ON_BE(IconDir.idCount); |
| 1129 | // nType is 1 for Icons, 2 for Cursors: |
| 1130 | wxUint16 nType = wxUINT16_SWAP_ON_BE(IconDir.idType); |
| 1131 | |
| 1132 | // loop round the icons and choose the best one: |
| 1133 | ICONDIRENTRY *pIconDirEntry = new ICONDIRENTRY[nIcons]; |
| 1134 | ICONDIRENTRY *pCurrentEntry = pIconDirEntry; |
| 1135 | int wMax = 0; |
| 1136 | int colmax = 0; |
| 1137 | int iSel = wxNOT_FOUND; |
| 1138 | |
| 1139 | for (int i = 0; i < nIcons; i++ ) |
| 1140 | { |
| 1141 | stream.Read(pCurrentEntry, sizeof(ICONDIRENTRY)); |
| 1142 | // bHeight and bColorCount are wxUint8 |
| 1143 | if ( pCurrentEntry->bWidth >= wMax ) |
| 1144 | { |
| 1145 | // see if we have more colors, ==0 indicates > 8bpp: |
| 1146 | if ( pCurrentEntry->bColorCount == 0 ) |
| 1147 | pCurrentEntry->bColorCount = 255; |
| 1148 | if ( pCurrentEntry->bColorCount >= colmax ) |
| 1149 | { |
| 1150 | iSel = i; |
| 1151 | wMax = pCurrentEntry->bWidth; |
| 1152 | colmax = pCurrentEntry->bColorCount; |
| 1153 | } |
| 1154 | } |
| 1155 | pCurrentEntry++; |
| 1156 | } |
| 1157 | |
| 1158 | if ( index != -1 ) |
| 1159 | { |
| 1160 | // VS: Note that we *have* to run the loop above even if index != -1, because |
| 1161 | // it reads ICONDIRENTRies. |
| 1162 | iSel = index; |
| 1163 | } |
| 1164 | |
| 1165 | if ( iSel == wxNOT_FOUND || iSel < 0 || iSel >= nIcons ) |
| 1166 | { |
| 1167 | wxLogError(_("ICO: Invalid icon index.")); |
| 1168 | bResult = FALSE; |
| 1169 | } |
| 1170 | else |
| 1171 | { |
| 1172 | // seek to selected icon: |
| 1173 | pCurrentEntry = pIconDirEntry + iSel; |
| 1174 | stream.SeekI(iPos + wxUINT32_SWAP_ON_BE(pCurrentEntry->dwImageOffset), wxFromStart); |
| 1175 | bResult = LoadDib(image, stream, TRUE, IsBmp); |
| 1176 | bool bIsCursorType = (this->GetType() == wxBITMAP_TYPE_CUR) || (this->GetType() == wxBITMAP_TYPE_ANI); |
| 1177 | if ( bResult && bIsCursorType && nType == 2 ) |
| 1178 | { |
| 1179 | // it is a cursor, so let's set the hotspot: |
| 1180 | image->SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, wxUINT16_SWAP_ON_BE(pCurrentEntry->wPlanes)); |
| 1181 | image->SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, wxUINT16_SWAP_ON_BE(pCurrentEntry->wBitCount)); |
| 1182 | } |
| 1183 | } |
| 1184 | delete[] pIconDirEntry; |
| 1185 | return bResult; |
| 1186 | } |
| 1187 | |
| 1188 | int wxICOHandler::GetImageCount(wxInputStream& stream) |
| 1189 | { |
| 1190 | ICONDIR IconDir; |
| 1191 | off_t iPos = stream.TellI(); |
| 1192 | stream.SeekI(0); |
| 1193 | stream.Read(&IconDir, sizeof(IconDir)); |
| 1194 | wxUint16 nIcons = wxUINT16_SWAP_ON_BE(IconDir.idCount); |
| 1195 | stream.SeekI(iPos); |
| 1196 | return (int)nIcons; |
| 1197 | } |
| 1198 | |
| 1199 | bool wxICOHandler::DoCanRead(wxInputStream& stream) |
| 1200 | { |
| 1201 | stream.SeekI(0); |
| 1202 | unsigned char hdr[4]; |
| 1203 | if ( !stream.Read(hdr, WXSIZEOF(hdr)) ) |
| 1204 | return FALSE; |
| 1205 | |
| 1206 | // hdr[2] is one for an icon and two for a cursor |
| 1207 | return hdr[0] == '\0' && hdr[1] == '\0' && hdr[2] == '\1' && hdr[3] == '\0'; |
| 1208 | } |
| 1209 | |
| 1210 | |
| 1211 | |
| 1212 | //----------------------------------------------------------------------------- |
| 1213 | // wxCURHandler |
| 1214 | //----------------------------------------------------------------------------- |
| 1215 | |
| 1216 | IMPLEMENT_DYNAMIC_CLASS(wxCURHandler, wxICOHandler) |
| 1217 | |
| 1218 | bool wxCURHandler::DoCanRead(wxInputStream& stream) |
| 1219 | { |
| 1220 | stream.SeekI(0); |
| 1221 | unsigned char hdr[4]; |
| 1222 | if ( !stream.Read(hdr, WXSIZEOF(hdr)) ) |
| 1223 | return FALSE; |
| 1224 | |
| 1225 | // hdr[2] is one for an icon and two for a cursor |
| 1226 | return hdr[0] == '\0' && hdr[1] == '\0' && hdr[2] == '\2' && hdr[3] == '\0'; |
| 1227 | } |
| 1228 | |
| 1229 | //----------------------------------------------------------------------------- |
| 1230 | // wxANIHandler |
| 1231 | //----------------------------------------------------------------------------- |
| 1232 | |
| 1233 | IMPLEMENT_DYNAMIC_CLASS(wxANIHandler, wxCURHandler) |
| 1234 | |
| 1235 | bool wxANIHandler::LoadFile(wxImage *image, wxInputStream& stream, |
| 1236 | bool verbose, int index) |
| 1237 | { |
| 1238 | wxInt32 FCC1, FCC2; |
| 1239 | wxUint32 datalen; |
| 1240 | static const char *rifftxt = "RIFF"; |
| 1241 | static const char *listtxt = "LIST"; |
| 1242 | static const char *icotxt = "icon"; |
| 1243 | |
| 1244 | wxInt32 *riff32 = (wxInt32 *) rifftxt; |
| 1245 | wxInt32 *list32 = (wxInt32 *) listtxt; |
| 1246 | wxInt32 *ico32 = (wxInt32 *) icotxt; |
| 1247 | |
| 1248 | int iIcon = 0; |
| 1249 | |
| 1250 | stream.SeekI(0); |
| 1251 | stream.Read(&FCC1, 4); |
| 1252 | if ( FCC1 != *riff32 ) |
| 1253 | return FALSE; |
| 1254 | |
| 1255 | // we have a riff file: |
| 1256 | while (stream.IsOk()) |
| 1257 | { |
| 1258 | // we always have a data size |
| 1259 | stream.Read(&datalen, 4); |
| 1260 | datalen = wxINT32_SWAP_ON_BE(datalen) ; |
| 1261 | //data should be padded to make even number of bytes |
| 1262 | if (datalen % 2 == 1) datalen ++ ; |
| 1263 | //now either data or a FCC |
| 1264 | if ( (FCC1 == *riff32) || (FCC1 == *list32) ) |
| 1265 | { |
| 1266 | stream.Read(&FCC2, 4); |
| 1267 | } |
| 1268 | else |
| 1269 | { |
| 1270 | if (FCC1 == *ico32 && iIcon >= index) |
| 1271 | { |
| 1272 | return DoLoadFile(image, stream, verbose, -1); |
| 1273 | } |
| 1274 | else |
| 1275 | { |
| 1276 | stream.SeekI(stream.TellI() + datalen); |
| 1277 | if ( FCC1 == *ico32 ) |
| 1278 | iIcon ++; |
| 1279 | } |
| 1280 | } |
| 1281 | |
| 1282 | // try to read next data chunk: |
| 1283 | stream.Read(&FCC1, 4); |
| 1284 | } |
| 1285 | return FALSE; |
| 1286 | } |
| 1287 | |
| 1288 | bool wxANIHandler::DoCanRead(wxInputStream& stream) |
| 1289 | { |
| 1290 | wxInt32 FCC1, FCC2; |
| 1291 | wxUint32 datalen ; |
| 1292 | static const char *rifftxt = "RIFF"; |
| 1293 | static const char *listtxt = "LIST"; |
| 1294 | static const char *anihtxt = "anih"; |
| 1295 | |
| 1296 | wxInt32 *riff32 = (wxInt32 *) rifftxt; |
| 1297 | wxInt32 *list32 = (wxInt32 *) listtxt; |
| 1298 | wxInt32 *anih32 = (wxInt32 *) anihtxt; |
| 1299 | |
| 1300 | stream.SeekI(0); |
| 1301 | if ( !stream.Read(&FCC1, 4) ) |
| 1302 | return FALSE; |
| 1303 | |
| 1304 | if ( FCC1 != *riff32 ) |
| 1305 | return FALSE; |
| 1306 | |
| 1307 | // we have a riff file: |
| 1308 | while ( stream.IsOk() ) |
| 1309 | { |
| 1310 | if ( FCC1 == *anih32 ) |
| 1311 | return TRUE; |
| 1312 | // we always have a data size: |
| 1313 | stream.Read(&datalen, 4); |
| 1314 | datalen = wxINT32_SWAP_ON_BE(datalen) ; |
| 1315 | //data should be padded to make even number of bytes |
| 1316 | if (datalen % 2 == 1) datalen ++ ; |
| 1317 | // now either data or a FCC: |
| 1318 | if ( (FCC1 == *riff32) || (FCC1 == *list32) ) |
| 1319 | { |
| 1320 | stream.Read(&FCC2, 4); |
| 1321 | } |
| 1322 | else |
| 1323 | { |
| 1324 | stream.SeekI(stream.TellI() + datalen); |
| 1325 | } |
| 1326 | |
| 1327 | // try to read next data chunk: |
| 1328 | if ( !stream.Read(&FCC1, 4) ) |
| 1329 | { |
| 1330 | // reading failed -- either EOF or IO error, bail out anyhow |
| 1331 | return FALSE; |
| 1332 | } |
| 1333 | } |
| 1334 | |
| 1335 | return FALSE; |
| 1336 | } |
| 1337 | |
| 1338 | int wxANIHandler::GetImageCount(wxInputStream& stream) |
| 1339 | { |
| 1340 | wxInt32 FCC1, FCC2; |
| 1341 | wxUint32 datalen ; |
| 1342 | static const char *rifftxt = "RIFF"; |
| 1343 | static const char *listtxt = "LIST"; |
| 1344 | static const char *anihtxt = "anih"; |
| 1345 | |
| 1346 | wxInt32 *riff32 = (wxInt32 *) rifftxt; |
| 1347 | wxInt32 *list32 = (wxInt32 *) listtxt; |
| 1348 | wxInt32 *anih32 = (wxInt32 *) anihtxt; |
| 1349 | |
| 1350 | stream.SeekI(0); |
| 1351 | stream.Read(&FCC1, 4); |
| 1352 | if ( FCC1 != *riff32 ) |
| 1353 | return wxNOT_FOUND; |
| 1354 | |
| 1355 | // we have a riff file: |
| 1356 | while ( stream.IsOk() ) |
| 1357 | { |
| 1358 | // we always have a data size: |
| 1359 | stream.Read(&datalen, 4); |
| 1360 | datalen = wxINT32_SWAP_ON_BE(datalen) ; |
| 1361 | //data should be padded to make even number of bytes |
| 1362 | if (datalen % 2 == 1) datalen ++ ; |
| 1363 | // now either data or a FCC: |
| 1364 | if ( (FCC1 == *riff32) || (FCC1 == *list32) ) |
| 1365 | { |
| 1366 | stream.Read(&FCC2, 4); |
| 1367 | } |
| 1368 | else |
| 1369 | { |
| 1370 | if ( FCC1 == *anih32 ) |
| 1371 | { |
| 1372 | wxUint32 *pData = new wxUint32[datalen/4]; |
| 1373 | stream.Read(pData, datalen); |
| 1374 | int nIcons = wxINT32_SWAP_ON_BE(*(pData + 1)); |
| 1375 | delete[] pData; |
| 1376 | return nIcons; |
| 1377 | } |
| 1378 | else |
| 1379 | stream.SeekI(stream.TellI() + datalen); |
| 1380 | } |
| 1381 | |
| 1382 | // try to read next data chunk: |
| 1383 | stream.Read(&FCC1, 4); |
| 1384 | } |
| 1385 | |
| 1386 | return wxNOT_FOUND; |
| 1387 | } |
| 1388 | |
| 1389 | #endif // wxUSE_ICO_CUR |
| 1390 | |
| 1391 | #endif // wxUSE_IMAGE && wxUSE_STREAMS |