1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #include "../../../include/fxge/fx_dib.h" 8 #include "../../../include/fxge/fx_ge.h" 9 #include "../../../include/fxcodec/fx_codec.h" 10 #include "dib_int.h" 11 #include <limits.h> 12 FX_BOOL ConvertBuffer(FXDIB_Format dest_format, FX_LPBYTE dest_buf, int dest_pitch, int width, int height, 13 const CFX_DIBSource* pSrcBitmap, int src_left, int src_top, FX_DWORD*& pal, void* pIccTransform); 14 void CmykDecode(FX_DWORD cmyk, int& c, int& m, int& y, int& k) 15 { 16 c = FXSYS_GetCValue(cmyk); 17 m = FXSYS_GetMValue(cmyk); 18 y = FXSYS_GetYValue(cmyk); 19 k = FXSYS_GetKValue(cmyk); 20 } 21 void ArgbDecode(FX_DWORD argb, int& a, int& r, int& g, int& b) 22 { 23 a = FXARGB_A(argb); 24 r = FXARGB_R(argb); 25 g = FXARGB_G(argb); 26 b = FXARGB_B(argb); 27 } 28 void ArgbDecode(FX_DWORD argb, int& a, FX_COLORREF& rgb) 29 { 30 a = FXARGB_A(argb); 31 rgb = FXSYS_RGB(FXARGB_R(argb), FXARGB_G(argb), FXARGB_B(argb)); 32 } 33 FX_DWORD ArgbEncode(int a, FX_COLORREF rgb) 34 { 35 return FXARGB_MAKE(a, FXSYS_GetRValue(rgb), FXSYS_GetGValue(rgb), FXSYS_GetBValue(rgb)); 36 } 37 CFX_DIBSource::CFX_DIBSource() 38 { 39 m_bpp = 0; 40 m_AlphaFlag = 0; 41 m_Width = m_Height = 0; 42 m_Pitch = 0; 43 m_pPalette = NULL; 44 m_pAlphaMask = NULL; 45 } 46 CFX_DIBSource::~CFX_DIBSource() 47 { 48 if (m_pPalette) { 49 FX_Free(m_pPalette); 50 } 51 if (m_pAlphaMask) { 52 delete m_pAlphaMask; 53 } 54 } 55 CFX_DIBitmap::CFX_DIBitmap() 56 { 57 m_bExtBuf = FALSE; 58 m_pBuffer = NULL; 59 m_pPalette = NULL; 60 } 61 #define _MAX_OOM_LIMIT_ 12000000 62 FX_BOOL CFX_DIBitmap::Create(int width, int height, FXDIB_Format format, FX_LPBYTE pBuffer, int pitch) 63 { 64 m_pBuffer = NULL; 65 m_bpp = (FX_BYTE)format; 66 m_AlphaFlag = (FX_BYTE)(format >> 8); 67 m_Width = m_Height = m_Pitch = 0; 68 if (width <= 0 || height <= 0 || pitch < 0) { 69 return FALSE; 70 } 71 if ((INT_MAX - 31) / width < (format & 0xff)) { 72 return FALSE; 73 } 74 if (!pitch) { 75 pitch = (width * (format & 0xff) + 31) / 32 * 4; 76 } 77 if ((1 << 30) / pitch < height) { 78 return FALSE; 79 } 80 if (pBuffer) { 81 m_pBuffer = pBuffer; 82 m_bExtBuf = TRUE; 83 } else { 84 int size = pitch * height + 4; 85 int oomlimit = _MAX_OOM_LIMIT_; 86 if (oomlimit >= 0 && size >= oomlimit) { 87 m_pBuffer = FX_AllocNL(FX_BYTE, size); 88 } else { 89 m_pBuffer = FX_Alloc(FX_BYTE, size); 90 } 91 if (m_pBuffer == NULL) { 92 return FALSE; 93 } 94 FXSYS_memset32(m_pBuffer, 0, sizeof (FX_BYTE) * size); 95 } 96 m_Width = width; 97 m_Height = height; 98 m_Pitch = pitch; 99 if (HasAlpha() && format != FXDIB_Argb) { 100 FX_BOOL ret = TRUE; 101 ret = BuildAlphaMask(); 102 if (!ret) { 103 if (!m_bExtBuf && m_pBuffer) { 104 FX_Free(m_pBuffer); 105 m_pBuffer = NULL; 106 m_Width = m_Height = m_Pitch = 0; 107 return FALSE; 108 } 109 } 110 } 111 return TRUE; 112 } 113 FX_BOOL CFX_DIBitmap::Copy(const CFX_DIBSource* pSrc) 114 { 115 if (m_pBuffer) { 116 return FALSE; 117 } 118 if (!Create(pSrc->GetWidth(), pSrc->GetHeight(), pSrc->GetFormat())) { 119 return FALSE; 120 } 121 CopyPalette(pSrc->GetPalette()); 122 CopyAlphaMask(pSrc->m_pAlphaMask); 123 for (int row = 0; row < pSrc->GetHeight(); row ++) { 124 FXSYS_memcpy32(m_pBuffer + row * m_Pitch, pSrc->GetScanline(row), m_Pitch); 125 } 126 return TRUE; 127 } 128 CFX_DIBitmap::~CFX_DIBitmap() 129 { 130 if (m_pBuffer && !m_bExtBuf) { 131 FX_Free(m_pBuffer); 132 } 133 m_pBuffer = NULL; 134 } 135 void CFX_DIBitmap::TakeOver(CFX_DIBitmap* pSrcBitmap) 136 { 137 if (m_pBuffer && !m_bExtBuf) { 138 FX_Free(m_pBuffer); 139 } 140 if (m_pPalette) { 141 FX_Free(m_pPalette); 142 } 143 if (m_pAlphaMask) { 144 delete m_pAlphaMask; 145 } 146 m_pBuffer = pSrcBitmap->m_pBuffer; 147 m_pPalette = pSrcBitmap->m_pPalette; 148 m_pAlphaMask = pSrcBitmap->m_pAlphaMask; 149 pSrcBitmap->m_pBuffer = NULL; 150 pSrcBitmap->m_pPalette = NULL; 151 pSrcBitmap->m_pAlphaMask = NULL; 152 m_bpp = pSrcBitmap->m_bpp; 153 m_bExtBuf = pSrcBitmap->m_bExtBuf; 154 m_AlphaFlag = pSrcBitmap->m_AlphaFlag; 155 m_Width = pSrcBitmap->m_Width; 156 m_Height = pSrcBitmap->m_Height; 157 m_Pitch = pSrcBitmap->m_Pitch; 158 } 159 CFX_DIBitmap* CFX_DIBSource::Clone(const FX_RECT* pClip) const 160 { 161 FX_RECT rect(0, 0, m_Width, m_Height); 162 if (pClip) { 163 rect.Intersect(*pClip); 164 if (rect.IsEmpty()) { 165 return NULL; 166 } 167 } 168 CFX_DIBitmap* pNewBitmap = FX_NEW CFX_DIBitmap; 169 if (!pNewBitmap) { 170 return NULL; 171 } 172 if (!pNewBitmap->Create(rect.Width(), rect.Height(), GetFormat())) { 173 delete pNewBitmap; 174 return NULL; 175 } 176 pNewBitmap->CopyPalette(m_pPalette); 177 pNewBitmap->CopyAlphaMask(m_pAlphaMask, pClip); 178 if (GetBPP() == 1 && rect.left % 8 != 0) { 179 int left_shift = rect.left % 32; 180 int right_shift = 32 - left_shift; 181 int dword_count = pNewBitmap->m_Pitch / 4; 182 for (int row = rect.top; row < rect.bottom; row ++) { 183 FX_DWORD* src_scan = (FX_DWORD*)GetScanline(row) + rect.left / 32; 184 FX_DWORD* dest_scan = (FX_DWORD*)pNewBitmap->GetScanline(row - rect.top); 185 for (int i = 0; i < dword_count; i ++) { 186 dest_scan[i] = (src_scan[i] << left_shift) | (src_scan[i + 1] >> right_shift); 187 } 188 } 189 } else { 190 int copy_len = (pNewBitmap->GetWidth() * pNewBitmap->GetBPP() + 7) / 8; 191 if (m_Pitch < (FX_DWORD)copy_len) { 192 copy_len = m_Pitch; 193 } 194 for (int row = rect.top; row < rect.bottom; row ++) { 195 FX_LPCBYTE src_scan = GetScanline(row) + rect.left * m_bpp / 8; 196 FX_LPBYTE dest_scan = (FX_LPBYTE)pNewBitmap->GetScanline(row - rect.top); 197 FXSYS_memcpy32(dest_scan, src_scan, copy_len); 198 } 199 } 200 return pNewBitmap; 201 } 202 void CFX_DIBSource::BuildPalette() 203 { 204 if (m_pPalette) { 205 return; 206 } 207 if (GetBPP() == 1) { 208 m_pPalette = FX_Alloc(FX_DWORD, 2); 209 if (!m_pPalette) { 210 return; 211 } 212 if(IsCmykImage()) { 213 m_pPalette[0] = 0xff; 214 m_pPalette[1] = 0; 215 } else { 216 m_pPalette[0] = 0xff000000; 217 m_pPalette[1] = 0xffffffff; 218 } 219 } else if (GetBPP() == 8) { 220 m_pPalette = FX_Alloc(FX_DWORD, 256); 221 if (!m_pPalette) { 222 return; 223 } 224 if(IsCmykImage()) { 225 for (int i = 0; i < 256; i ++) { 226 m_pPalette[i] = 0xff - i; 227 } 228 } else { 229 for (int i = 0; i < 256; i ++) { 230 m_pPalette[i] = 0xff000000 | (i * 0x10101); 231 } 232 } 233 } 234 } 235 FX_BOOL CFX_DIBSource::BuildAlphaMask() 236 { 237 if (m_pAlphaMask) { 238 return TRUE; 239 } 240 m_pAlphaMask = FX_NEW CFX_DIBitmap; 241 if (!m_pAlphaMask) { 242 return FALSE; 243 } 244 if (!m_pAlphaMask->Create(m_Width, m_Height, FXDIB_8bppMask)) { 245 delete m_pAlphaMask; 246 m_pAlphaMask = NULL; 247 return FALSE; 248 } 249 FXSYS_memset8(m_pAlphaMask->GetBuffer(), 0xff, m_pAlphaMask->GetHeight()*m_pAlphaMask->GetPitch()); 250 return TRUE; 251 } 252 FX_DWORD CFX_DIBSource::GetPaletteEntry(int index) const 253 { 254 ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask()); 255 if (m_pPalette) { 256 return m_pPalette[index]; 257 } 258 if (IsCmykImage()) { 259 if (GetBPP() == 1) { 260 return index ? 0 : 0xff; 261 } 262 return 0xff - index; 263 } 264 if (GetBPP() == 1) { 265 return index ? 0xffffffff : 0xff000000; 266 } 267 return index * 0x10101 | 0xff000000; 268 } 269 void CFX_DIBSource::SetPaletteEntry(int index, FX_DWORD color) 270 { 271 ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask()); 272 if (m_pPalette == NULL) { 273 BuildPalette(); 274 } 275 m_pPalette[index] = color; 276 } 277 int CFX_DIBSource::FindPalette(FX_DWORD color) const 278 { 279 ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask()); 280 if (m_pPalette == NULL) { 281 if (IsCmykImage()) { 282 if (GetBPP() == 1) { 283 return ((FX_BYTE)color == 0xff) ? 0 : 1; 284 } 285 return 0xff - (FX_BYTE)color; 286 } 287 if (GetBPP() == 1) { 288 return ((FX_BYTE)color == 0xff) ? 1 : 0; 289 } 290 return (FX_BYTE)color; 291 } 292 int palsize = (1 << GetBPP()); 293 for (int i = 0; i < palsize; i ++) 294 if (m_pPalette[i] == color) { 295 return i; 296 } 297 return -1; 298 } 299 void CFX_DIBitmap::Clear(FX_DWORD color) 300 { 301 if (m_pBuffer == NULL) { 302 return; 303 } 304 switch (GetFormat()) { 305 case FXDIB_1bppMask: 306 FXSYS_memset8(m_pBuffer, (color & 0xff000000) ? 0xff : 0, m_Pitch * m_Height); 307 break; 308 case FXDIB_1bppRgb: { 309 int index = FindPalette(color); 310 FXSYS_memset8(m_pBuffer, index ? 0xff : 0, m_Pitch * m_Height); 311 break; 312 } 313 case FXDIB_8bppMask: 314 FXSYS_memset8(m_pBuffer, color >> 24, m_Pitch * m_Height); 315 break; 316 case FXDIB_8bppRgb: { 317 int index = FindPalette(color); 318 FXSYS_memset8(m_pBuffer, index, m_Pitch * m_Height); 319 break; 320 } 321 case FXDIB_Rgb: 322 case FXDIB_Rgba: { 323 int a, r, g, b; 324 ArgbDecode(color, a, r, g, b); 325 if (r == g && g == b) { 326 FXSYS_memset8(m_pBuffer, r, m_Pitch * m_Height); 327 } else { 328 int byte_pos = 0; 329 for (int col = 0; col < m_Width; col ++) { 330 m_pBuffer[byte_pos++] = b; 331 m_pBuffer[byte_pos++] = g; 332 m_pBuffer[byte_pos++] = r; 333 } 334 for (int row = 1; row < m_Height; row ++) { 335 FXSYS_memcpy32(m_pBuffer + row * m_Pitch, m_pBuffer, m_Pitch); 336 } 337 } 338 break; 339 } 340 case FXDIB_Rgb32: 341 case FXDIB_Argb: { 342 color = IsCmykImage() ? FXCMYK_TODIB(color) : FXARGB_TODIB(color); 343 for (int i = 0; i < m_Width; i ++) { 344 ((FX_DWORD*)m_pBuffer)[i] = color; 345 } 346 for (int row = 1; row < m_Height; row ++) { 347 FXSYS_memcpy32(m_pBuffer + row * m_Pitch, m_pBuffer, m_Pitch); 348 } 349 break; 350 } 351 default: 352 break; 353 } 354 } 355 void CFX_DIBSource::GetOverlapRect(int& dest_left, int& dest_top, int& width, int& height, 356 int src_width, int src_height, int& src_left, int& src_top, 357 const CFX_ClipRgn* pClipRgn) 358 { 359 if (width == 0 || height == 0) { 360 return; 361 } 362 ASSERT(width > 0 && height > 0); 363 if (dest_left > m_Width || dest_top > m_Height) { 364 width = 0; 365 height = 0; 366 return; 367 } 368 int x_offset = dest_left - src_left; 369 int y_offset = dest_top - src_top; 370 FX_RECT src_rect(src_left, src_top, src_left + width, src_top + height); 371 FX_RECT src_bound(0, 0, src_width, src_height); 372 src_rect.Intersect(src_bound); 373 FX_RECT dest_rect(src_rect.left + x_offset, src_rect.top + y_offset, 374 src_rect.right + x_offset, src_rect.bottom + y_offset); 375 FX_RECT dest_bound(0, 0, m_Width, m_Height); 376 dest_rect.Intersect(dest_bound); 377 if (pClipRgn) { 378 dest_rect.Intersect(pClipRgn->GetBox()); 379 } 380 dest_left = dest_rect.left; 381 dest_top = dest_rect.top; 382 src_left = dest_left - x_offset; 383 src_top = dest_top - y_offset; 384 width = dest_rect.right - dest_rect.left; 385 height = dest_rect.bottom - dest_rect.top; 386 } 387 FX_BOOL CFX_DIBitmap::TransferBitmap(int dest_left, int dest_top, int width, int height, 388 const CFX_DIBSource* pSrcBitmap, int src_left, int src_top, void* pIccTransform) 389 { 390 if (m_pBuffer == NULL) { 391 return FALSE; 392 } 393 GetOverlapRect(dest_left, dest_top, width, height, pSrcBitmap->GetWidth(), pSrcBitmap->GetHeight(), src_left, src_top, NULL); 394 if (width == 0 || height == 0) { 395 return TRUE; 396 } 397 FXDIB_Format dest_format = GetFormat(); 398 FXDIB_Format src_format = pSrcBitmap->GetFormat(); 399 if (dest_format == src_format && pIccTransform == NULL) { 400 if (GetBPP() == 1) { 401 for (int row = 0; row < height; row ++) { 402 FX_LPBYTE dest_scan = m_pBuffer + (dest_top + row) * m_Pitch; 403 FX_LPCBYTE src_scan = pSrcBitmap->GetScanline(src_top + row); 404 for (int col = 0; col < width; col ++) { 405 if (src_scan[(src_left + col) / 8] & (1 << (7 - (src_left + col) % 8))) { 406 dest_scan[(dest_left + col) / 8] |= 1 << (7 - (dest_left + col) % 8); 407 } else { 408 dest_scan[(dest_left + col) / 8] &= ~(1 << (7 - (dest_left + col) % 8)); 409 } 410 } 411 } 412 } else { 413 int Bpp = GetBPP() / 8; 414 for (int row = 0; row < height; row ++) { 415 FX_LPBYTE dest_scan = m_pBuffer + (dest_top + row) * m_Pitch + dest_left * Bpp; 416 FX_LPCBYTE src_scan = pSrcBitmap->GetScanline(src_top + row) + src_left * Bpp; 417 FXSYS_memcpy32(dest_scan, src_scan, width * Bpp); 418 } 419 } 420 } else { 421 if (m_pPalette) { 422 return FALSE; 423 } 424 if (m_bpp == 8) { 425 dest_format = FXDIB_8bppMask; 426 } 427 FX_LPBYTE dest_buf = m_pBuffer + dest_top * m_Pitch + dest_left * GetBPP() / 8; 428 FX_DWORD* d_plt = NULL; 429 if(!ConvertBuffer(dest_format, dest_buf, m_Pitch, width, height, pSrcBitmap, src_left, src_top, d_plt, pIccTransform)) { 430 return FALSE; 431 } 432 } 433 return TRUE; 434 } 435 #ifndef _FPDFAPI_MINI_ 436 FX_BOOL CFX_DIBitmap::TransferMask(int dest_left, int dest_top, int width, int height, 437 const CFX_DIBSource* pMask, FX_DWORD color, int src_left, int src_top, int alpha_flag, void* pIccTransform) 438 { 439 if (m_pBuffer == NULL) { 440 return FALSE; 441 } 442 ASSERT(HasAlpha() && (m_bpp >= 24)); 443 ASSERT(pMask->IsAlphaMask()); 444 if (!HasAlpha() || !pMask->IsAlphaMask() || m_bpp < 24) { 445 return FALSE; 446 } 447 GetOverlapRect(dest_left, dest_top, width, height, pMask->GetWidth(), pMask->GetHeight(), src_left, src_top, NULL); 448 if (width == 0 || height == 0) { 449 return TRUE; 450 } 451 int src_pitch = pMask->GetPitch(); 452 int src_bpp = pMask->GetBPP(); 453 int alpha; 454 FX_DWORD dst_color; 455 if (alpha_flag >> 8) { 456 alpha = alpha_flag & 0xff; 457 dst_color = FXCMYK_TODIB(color); 458 } else { 459 alpha = FXARGB_A(color); 460 dst_color = FXARGB_TODIB(color); 461 } 462 FX_LPBYTE color_p = (FX_LPBYTE)&dst_color; 463 if (pIccTransform && CFX_GEModule::Get()->GetCodecModule() && CFX_GEModule::Get()->GetCodecModule()->GetIccModule()) { 464 ICodec_IccModule* pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule(); 465 pIccModule->TranslateScanline(pIccTransform, color_p, color_p, 1); 466 } else { 467 if (alpha_flag >> 8 && !IsCmykImage()) 468 AdobeCMYK_to_sRGB1(FXSYS_GetCValue(color), FXSYS_GetMValue(color), FXSYS_GetYValue(color), FXSYS_GetKValue(color), 469 color_p[2], color_p[1], color_p[0]); 470 else if (!(alpha_flag >> 8) && IsCmykImage()) { 471 return FALSE; 472 } 473 } 474 if(!IsCmykImage()) { 475 color_p[3] = (FX_BYTE)alpha; 476 } 477 if (GetFormat() == FXDIB_Argb) { 478 for (int row = 0; row < height; row ++) { 479 FX_DWORD* dest_pos = (FX_DWORD*)(m_pBuffer + (dest_top + row) * m_Pitch + dest_left * 4); 480 FX_LPCBYTE src_scan = pMask->GetScanline(src_top + row); 481 if (src_bpp == 1) { 482 for (int col = 0; col < width; col ++) { 483 int src_bitpos = src_left + col; 484 if (src_scan[src_bitpos / 8] & (1 << (7 - src_bitpos % 8))) { 485 *dest_pos = dst_color; 486 } else { 487 *dest_pos = 0; 488 } 489 dest_pos ++; 490 } 491 } else { 492 src_scan += src_left; 493 dst_color = FXARGB_TODIB(dst_color); 494 dst_color &= 0xffffff; 495 for (int col = 0; col < width; col ++) { 496 FXARGB_SETDIB(dest_pos++, dst_color | ((alpha * (*src_scan++) / 255) << 24)); 497 } 498 } 499 } 500 } else { 501 int comps = m_bpp / 8; 502 for (int row = 0; row < height; row ++) { 503 FX_LPBYTE dest_color_pos = m_pBuffer + (dest_top + row) * m_Pitch + dest_left * comps; 504 FX_LPBYTE dest_alpha_pos = (FX_LPBYTE)m_pAlphaMask->GetScanline(dest_top + row) + dest_left; 505 FX_LPCBYTE src_scan = pMask->GetScanline(src_top + row); 506 if (src_bpp == 1) { 507 for (int col = 0; col < width; col ++) { 508 int src_bitpos = src_left + col; 509 if (src_scan[src_bitpos / 8] & (1 << (7 - src_bitpos % 8))) { 510 FXSYS_memcpy32(dest_color_pos, color_p, comps); 511 *dest_alpha_pos = 0xff; 512 } else { 513 FXSYS_memset32(dest_color_pos, 0, comps); 514 *dest_alpha_pos = 0; 515 } 516 dest_color_pos += comps; 517 dest_alpha_pos ++; 518 } 519 } else { 520 src_scan += src_left; 521 for (int col = 0; col < width; col ++) { 522 FXSYS_memcpy32(dest_color_pos, color_p, comps); 523 dest_color_pos += comps; 524 *dest_alpha_pos++ = (alpha * (*src_scan++) / 255); 525 } 526 } 527 } 528 } 529 return TRUE; 530 } 531 #endif 532 void CFX_DIBSource::CopyPalette(const FX_DWORD* pSrc, FX_DWORD size) 533 { 534 if (pSrc == NULL || GetBPP() > 8) { 535 if (m_pPalette) { 536 FX_Free(m_pPalette); 537 } 538 m_pPalette = NULL; 539 } else { 540 FX_DWORD pal_size = 1 << GetBPP(); 541 if (m_pPalette == NULL) { 542 m_pPalette = FX_Alloc(FX_DWORD, pal_size); 543 } 544 if (!m_pPalette) { 545 return; 546 } 547 if (pal_size > size) { 548 pal_size = size; 549 } 550 FXSYS_memcpy32(m_pPalette, pSrc, pal_size * sizeof(FX_DWORD)); 551 } 552 } 553 void CFX_DIBSource::GetPalette(FX_DWORD* pal, int alpha) const 554 { 555 ASSERT(GetBPP() <= 8 && !IsCmykImage()); 556 if (GetBPP() == 1) { 557 pal[0] = ((m_pPalette ? m_pPalette[0] : 0xff000000) & 0xffffff) | (alpha << 24); 558 pal[1] = ((m_pPalette ? m_pPalette[1] : 0xffffffff) & 0xffffff) | (alpha << 24); 559 return; 560 } 561 if (m_pPalette) { 562 for (int i = 0; i < 256; i ++) { 563 pal[i] = (m_pPalette[i] & 0x00ffffff) | (alpha << 24); 564 } 565 } else { 566 for (int i = 0; i < 256; i ++) { 567 pal[i] = (i * 0x10101) | (alpha << 24); 568 } 569 } 570 } 571 CFX_DIBitmap* CFX_DIBSource::GetAlphaMask(const FX_RECT* pClip) const 572 { 573 ASSERT(GetFormat() == FXDIB_Argb); 574 FX_RECT rect(0, 0, m_Width, m_Height); 575 if (pClip) { 576 rect.Intersect(*pClip); 577 if (rect.IsEmpty()) { 578 return NULL; 579 } 580 } 581 CFX_DIBitmap* pMask = FX_NEW CFX_DIBitmap; 582 if (!pMask) { 583 return NULL; 584 } 585 if (!pMask->Create(rect.Width(), rect.Height(), FXDIB_8bppMask)) { 586 delete pMask; 587 return NULL; 588 } 589 for (int row = rect.top; row < rect.bottom; row ++) { 590 FX_LPCBYTE src_scan = GetScanline(row) + rect.left * 4 + 3; 591 FX_LPBYTE dest_scan = (FX_LPBYTE)pMask->GetScanline(row - rect.top); 592 for (int col = rect.left; col < rect.right; col ++) { 593 *dest_scan ++ = *src_scan; 594 src_scan += 4; 595 } 596 } 597 return pMask; 598 } 599 FX_BOOL CFX_DIBSource::CopyAlphaMask(const CFX_DIBSource* pAlphaMask, const FX_RECT* pClip) 600 { 601 if (!HasAlpha() || GetFormat() == FXDIB_Argb) { 602 return FALSE; 603 } 604 if (pAlphaMask) { 605 FX_RECT rect(0, 0, pAlphaMask->m_Width, pAlphaMask->m_Height); 606 if (pClip) { 607 rect.Intersect(*pClip); 608 if (rect.IsEmpty() || rect.Width() != m_Width || rect.Height() != m_Height) { 609 return FALSE; 610 } 611 } else { 612 if (pAlphaMask->m_Width != m_Width || pAlphaMask->m_Height != m_Height) { 613 return FALSE; 614 } 615 } 616 for (int row = 0; row < m_Height; row ++) 617 FXSYS_memcpy32((void*)m_pAlphaMask->GetScanline(row), 618 pAlphaMask->GetScanline(row + rect.top) + rect.left, m_pAlphaMask->m_Pitch); 619 } else { 620 m_pAlphaMask->Clear(0xff000000); 621 } 622 return TRUE; 623 } 624 const int g_ChannelOffset[] = {0, 2, 1, 0, 0, 1, 2, 3, 3}; 625 FX_BOOL CFX_DIBitmap::LoadChannel(FXDIB_Channel destChannel, const CFX_DIBSource* pSrcBitmap, FXDIB_Channel srcChannel) 626 { 627 if (m_pBuffer == NULL) { 628 return FALSE; 629 } 630 CFX_DIBSource* pSrcClone = (CFX_DIBSource*)pSrcBitmap; 631 CFX_DIBitmap* pDst = this; 632 int destOffset, srcOffset; 633 if (srcChannel == FXDIB_Alpha) { 634 if (!pSrcBitmap->HasAlpha() && !pSrcBitmap->IsAlphaMask()) { 635 return FALSE; 636 } 637 if (pSrcBitmap->GetBPP() == 1) { 638 pSrcClone = pSrcBitmap->CloneConvert(FXDIB_8bppMask); 639 if (pSrcClone == NULL) { 640 return FALSE; 641 } 642 } 643 if(pSrcBitmap->GetFormat() == FXDIB_Argb) { 644 srcOffset = 3; 645 } else { 646 srcOffset = 0; 647 } 648 } else { 649 if (pSrcBitmap->IsAlphaMask()) { 650 return FALSE; 651 } 652 if (pSrcBitmap->GetBPP() < 24) { 653 if (pSrcBitmap->IsCmykImage()) { 654 pSrcClone = pSrcBitmap->CloneConvert((FXDIB_Format)((pSrcBitmap->GetFormat() & 0xff00) | 0x20)); 655 } else { 656 pSrcClone = pSrcBitmap->CloneConvert((FXDIB_Format)((pSrcBitmap->GetFormat() & 0xff00) | 0x18)); 657 } 658 if (pSrcClone == NULL) { 659 return FALSE; 660 } 661 } 662 srcOffset = g_ChannelOffset[srcChannel]; 663 } 664 if (destChannel == FXDIB_Alpha) { 665 if (IsAlphaMask()) { 666 if(!ConvertFormat(FXDIB_8bppMask)) { 667 if (pSrcClone != pSrcBitmap) { 668 delete pSrcClone; 669 } 670 return FALSE; 671 } 672 destOffset = 0; 673 } else { 674 destOffset = 0; 675 if(!ConvertFormat(IsCmykImage() ? FXDIB_Cmyka : FXDIB_Argb)) { 676 if (pSrcClone != pSrcBitmap) { 677 delete pSrcClone; 678 } 679 return FALSE; 680 } 681 if (GetFormat() == FXDIB_Argb) { 682 destOffset = 3; 683 } 684 } 685 } else { 686 if (IsAlphaMask()) { 687 if (pSrcClone != pSrcBitmap) { 688 delete pSrcClone; 689 } 690 return FALSE; 691 } 692 if (GetBPP() < 24) { 693 if (HasAlpha()) { 694 if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyka : FXDIB_Argb)) { 695 if (pSrcClone != pSrcBitmap) { 696 delete pSrcClone; 697 } 698 return FALSE; 699 } 700 } else 701 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ 702 if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyk : FXDIB_Rgb32)) { 703 #else 704 if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyk : FXDIB_Rgb)) { 705 #endif 706 if (pSrcClone != pSrcBitmap) { 707 delete pSrcClone; 708 } 709 return FALSE; 710 } 711 } 712 destOffset = g_ChannelOffset[destChannel]; 713 } 714 if (srcChannel == FXDIB_Alpha && pSrcClone->m_pAlphaMask) { 715 CFX_DIBitmap* pAlphaMask = pSrcClone->m_pAlphaMask; 716 if (pSrcClone->GetWidth() != m_Width || pSrcClone->GetHeight() != m_Height) { 717 if (pAlphaMask) { 718 pAlphaMask = pAlphaMask->StretchTo(m_Width, m_Height); 719 if (pAlphaMask == NULL) { 720 if (pSrcClone != pSrcBitmap) { 721 delete pSrcClone; 722 } 723 return FALSE; 724 } 725 } 726 } 727 if (pSrcClone != pSrcBitmap) { 728 pSrcClone->m_pAlphaMask = NULL; 729 delete pSrcClone; 730 } 731 pSrcClone = pAlphaMask; 732 srcOffset = 0; 733 } else if (pSrcClone->GetWidth() != m_Width || pSrcClone->GetHeight() != m_Height) { 734 CFX_DIBitmap* pSrcMatched = pSrcClone->StretchTo(m_Width, m_Height); 735 if (pSrcClone != pSrcBitmap) { 736 delete pSrcClone; 737 } 738 if (pSrcMatched == NULL) { 739 return FALSE; 740 } 741 pSrcClone = pSrcMatched; 742 } 743 if (destChannel == FXDIB_Alpha && m_pAlphaMask) { 744 pDst = m_pAlphaMask; 745 destOffset = 0; 746 } 747 int srcBytes = pSrcClone->GetBPP() / 8; 748 int destBytes = pDst->GetBPP() / 8; 749 for (int row = 0; row < m_Height; row ++) { 750 FX_LPBYTE dest_pos = (FX_LPBYTE)pDst->GetScanline(row) + destOffset; 751 FX_LPCBYTE src_pos = pSrcClone->GetScanline(row) + srcOffset; 752 for (int col = 0; col < m_Width; col ++) { 753 *dest_pos = *src_pos; 754 dest_pos += destBytes; 755 src_pos += srcBytes; 756 } 757 } 758 if (pSrcClone != pSrcBitmap && pSrcClone != pSrcBitmap->m_pAlphaMask) { 759 delete pSrcClone; 760 } 761 return TRUE; 762 } 763 FX_BOOL CFX_DIBitmap::LoadChannel(FXDIB_Channel destChannel, int value) 764 { 765 if (m_pBuffer == NULL) { 766 return FALSE; 767 } 768 int destOffset; 769 if (destChannel == FXDIB_Alpha) { 770 if (IsAlphaMask()) { 771 if(!ConvertFormat(FXDIB_8bppMask)) { 772 return FALSE; 773 } 774 destOffset = 0; 775 } else { 776 destOffset = 0; 777 if(!ConvertFormat(IsCmykImage() ? FXDIB_Cmyka : FXDIB_Argb)) { 778 return FALSE; 779 } 780 if (GetFormat() == FXDIB_Argb) { 781 destOffset = 3; 782 } 783 } 784 } else { 785 if (IsAlphaMask()) { 786 return FALSE; 787 } 788 if (GetBPP() < 24) { 789 if (HasAlpha()) { 790 if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyka : FXDIB_Argb)) { 791 return FALSE; 792 } 793 } else 794 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ 795 if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyk : FXDIB_Rgb)) { 796 return FALSE; 797 } 798 #else 799 if (!ConvertFormat(IsCmykImage() ? FXDIB_Cmyk : FXDIB_Rgb32)) { 800 return FALSE; 801 } 802 #endif 803 } 804 destOffset = g_ChannelOffset[destChannel]; 805 } 806 int Bpp = GetBPP() / 8; 807 if (Bpp == 1) { 808 FXSYS_memset8(m_pBuffer, value, m_Height * m_Pitch); 809 return TRUE; 810 } 811 if (destChannel == FXDIB_Alpha && m_pAlphaMask) { 812 FXSYS_memset8(m_pAlphaMask->GetBuffer(), value, m_pAlphaMask->GetHeight()*m_pAlphaMask->GetPitch()); 813 return TRUE; 814 } 815 for (int row = 0; row < m_Height; row ++) { 816 FX_LPBYTE scan_line = m_pBuffer + row * m_Pitch + destOffset; 817 for (int col = 0; col < m_Width; col ++) { 818 *scan_line = value; 819 scan_line += Bpp; 820 } 821 } 822 return TRUE; 823 } 824 FX_BOOL CFX_DIBitmap::MultiplyAlpha(const CFX_DIBSource* pSrcBitmap) 825 { 826 if (m_pBuffer == NULL) { 827 return FALSE; 828 } 829 ASSERT(pSrcBitmap->IsAlphaMask()); 830 if (!pSrcBitmap->IsAlphaMask()) { 831 return FALSE; 832 } 833 if (!IsAlphaMask() && !HasAlpha()) { 834 return LoadChannel(FXDIB_Alpha, pSrcBitmap, FXDIB_Alpha); 835 } 836 CFX_DIBitmap* pSrcClone = (CFX_DIBitmap*)pSrcBitmap; 837 if (pSrcBitmap->GetWidth() != m_Width || pSrcBitmap->GetHeight() != m_Height) { 838 pSrcClone = pSrcBitmap->StretchTo(m_Width, m_Height); 839 ASSERT(pSrcClone != NULL); 840 if (pSrcClone == NULL) { 841 return FALSE; 842 } 843 } 844 if (IsAlphaMask()) { 845 if(!ConvertFormat(FXDIB_8bppMask)) { 846 if (pSrcClone != pSrcBitmap) { 847 delete pSrcClone; 848 } 849 return FALSE; 850 } 851 for (int row = 0; row < m_Height; row ++) { 852 FX_LPBYTE dest_scan = m_pBuffer + m_Pitch * row; 853 FX_LPBYTE src_scan = pSrcClone->m_pBuffer + pSrcClone->m_Pitch * row; 854 if (pSrcClone->GetBPP() == 1) { 855 for (int col = 0; col < m_Width; col ++) { 856 if (!((1 << (7 - col % 8)) & src_scan[col / 8])) { 857 dest_scan[col] = 0; 858 } 859 } 860 } else { 861 for (int col = 0; col < m_Width; col ++) { 862 *dest_scan = (*dest_scan) * src_scan[col] / 255; 863 dest_scan ++; 864 } 865 } 866 } 867 } else { 868 if(GetFormat() == FXDIB_Argb) { 869 if (pSrcClone->GetBPP() == 1) { 870 if (pSrcClone != pSrcBitmap) { 871 delete pSrcClone; 872 } 873 return FALSE; 874 } 875 for (int row = 0; row < m_Height; row ++) { 876 FX_LPBYTE dest_scan = m_pBuffer + m_Pitch * row + 3; 877 FX_LPBYTE src_scan = pSrcClone->m_pBuffer + pSrcClone->m_Pitch * row; 878 for (int col = 0; col < m_Width; col ++) { 879 *dest_scan = (*dest_scan) * src_scan[col] / 255; 880 dest_scan += 4; 881 } 882 } 883 } else { 884 m_pAlphaMask->MultiplyAlpha(pSrcClone); 885 } 886 } 887 if (pSrcClone != pSrcBitmap) { 888 delete pSrcClone; 889 } 890 return TRUE; 891 } 892 FX_BOOL CFX_DIBitmap::GetGrayData(void* pIccTransform) 893 { 894 if (m_pBuffer == NULL) { 895 return FALSE; 896 } 897 switch (GetFormat()) { 898 case FXDIB_1bppRgb: { 899 if (m_pPalette == NULL) { 900 return FALSE; 901 } 902 FX_BYTE gray[2]; 903 for (int i = 0; i < 2; i ++) { 904 int r = (FX_BYTE)(m_pPalette[i] >> 16); 905 int g = (FX_BYTE)(m_pPalette[i] >> 8); 906 int b = (FX_BYTE)m_pPalette[i]; 907 gray[i] = (FX_BYTE)FXRGB2GRAY(r, g, b); 908 } 909 CFX_DIBitmap* pMask = FX_NEW CFX_DIBitmap; 910 if (!pMask) { 911 return FALSE; 912 } 913 if (!pMask->Create(m_Width, m_Height, FXDIB_8bppMask)) { 914 delete pMask; 915 return FALSE; 916 } 917 FXSYS_memset8(pMask->GetBuffer(), gray[0], pMask->GetPitch() * m_Height); 918 for (int row = 0; row < m_Height; row ++) { 919 FX_LPBYTE src_pos = m_pBuffer + row * m_Pitch; 920 FX_LPBYTE dest_pos = (FX_LPBYTE)pMask->GetScanline(row); 921 for (int col = 0; col < m_Width; col ++) { 922 if (src_pos[col / 8] & (1 << (7 - col % 8))) { 923 *dest_pos = gray[1]; 924 } 925 dest_pos ++; 926 } 927 } 928 TakeOver(pMask); 929 delete pMask; 930 break; 931 } 932 case FXDIB_8bppRgb: { 933 if (m_pPalette == NULL) { 934 return FALSE; 935 } 936 FX_BYTE gray[256]; 937 for (int i = 0; i < 256; i ++) { 938 int r = (FX_BYTE)(m_pPalette[i] >> 16); 939 int g = (FX_BYTE)(m_pPalette[i] >> 8); 940 int b = (FX_BYTE)m_pPalette[i]; 941 gray[i] = (FX_BYTE)FXRGB2GRAY(r, g, b); 942 } 943 CFX_DIBitmap* pMask = FX_NEW CFX_DIBitmap; 944 if (!pMask) { 945 return FALSE; 946 } 947 if (!pMask->Create(m_Width, m_Height, FXDIB_8bppMask)) { 948 delete pMask; 949 return FALSE; 950 } 951 for (int row = 0; row < m_Height; row ++) { 952 FX_LPBYTE dest_pos = pMask->GetBuffer() + row * pMask->GetPitch(); 953 FX_LPBYTE src_pos = m_pBuffer + row * m_Pitch; 954 for (int col = 0; col < m_Width; col ++) { 955 *dest_pos ++ = gray[*src_pos ++]; 956 } 957 } 958 TakeOver(pMask); 959 delete pMask; 960 break; 961 } 962 case FXDIB_Rgb: { 963 CFX_DIBitmap* pMask = FX_NEW CFX_DIBitmap; 964 if (!pMask) { 965 return FALSE; 966 } 967 if (!pMask->Create(m_Width, m_Height, FXDIB_8bppMask)) { 968 delete pMask; 969 return FALSE; 970 } 971 for (int row = 0; row < m_Height; row ++) { 972 FX_LPBYTE src_pos = m_pBuffer + row * m_Pitch; 973 FX_LPBYTE dest_pos = pMask->GetBuffer() + row * pMask->GetPitch(); 974 for (int col = 0; col < m_Width; col ++) { 975 *dest_pos ++ = FXRGB2GRAY(src_pos[2], src_pos[1], *src_pos); 976 src_pos += 3; 977 } 978 } 979 TakeOver(pMask); 980 delete pMask; 981 break; 982 } 983 case FXDIB_Rgb32: { 984 CFX_DIBitmap* pMask = FX_NEW CFX_DIBitmap; 985 if (!pMask) { 986 return FALSE; 987 } 988 if (!pMask->Create(m_Width, m_Height, FXDIB_8bppMask)) { 989 delete pMask; 990 return FALSE; 991 } 992 for (int row = 0; row < m_Height; row ++) { 993 FX_LPBYTE src_pos = m_pBuffer + row * m_Pitch; 994 FX_LPBYTE dest_pos = pMask->GetBuffer() + row * pMask->GetPitch(); 995 for (int col = 0; col < m_Width; col ++) { 996 *dest_pos ++ = FXRGB2GRAY(src_pos[2], src_pos[1], *src_pos); 997 src_pos += 4; 998 } 999 } 1000 TakeOver(pMask); 1001 delete pMask; 1002 break; 1003 } 1004 default: 1005 return FALSE; 1006 } 1007 return TRUE; 1008 } 1009 FX_BOOL CFX_DIBitmap::MultiplyAlpha(int alpha) 1010 { 1011 if (m_pBuffer == NULL) { 1012 return FALSE; 1013 } 1014 switch (GetFormat()) { 1015 case FXDIB_1bppMask: 1016 if (!ConvertFormat(FXDIB_8bppMask)) { 1017 return FALSE; 1018 } 1019 MultiplyAlpha(alpha); 1020 break; 1021 case FXDIB_8bppMask: { 1022 for (int row = 0; row < m_Height; row ++) { 1023 FX_LPBYTE scan_line = m_pBuffer + row * m_Pitch; 1024 for (int col = 0; col < m_Width; col ++) { 1025 scan_line[col] = scan_line[col] * alpha / 255; 1026 } 1027 } 1028 break; 1029 } 1030 case FXDIB_Argb: { 1031 for (int row = 0; row < m_Height; row ++) { 1032 FX_LPBYTE scan_line = m_pBuffer + row * m_Pitch + 3; 1033 for (int col = 0; col < m_Width; col ++) { 1034 *scan_line = (*scan_line) * alpha / 255; 1035 scan_line += 4; 1036 } 1037 } 1038 break; 1039 } 1040 default: 1041 if (HasAlpha()) { 1042 m_pAlphaMask->MultiplyAlpha(alpha); 1043 } else if (IsCmykImage()) { 1044 if (!ConvertFormat((FXDIB_Format)(GetFormat() | 0x0200))) { 1045 return FALSE; 1046 } 1047 m_pAlphaMask->MultiplyAlpha(alpha); 1048 } else { 1049 if (!ConvertFormat(FXDIB_Argb)) { 1050 return FALSE; 1051 } 1052 MultiplyAlpha(alpha); 1053 } 1054 break; 1055 } 1056 return TRUE; 1057 } 1058 #if !defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) 1059 FX_DWORD CFX_DIBitmap::GetPixel(int x, int y) const 1060 { 1061 if (m_pBuffer == NULL) { 1062 return 0; 1063 } 1064 FX_LPBYTE pos = m_pBuffer + y * m_Pitch + x * GetBPP() / 8; 1065 switch (GetFormat()) { 1066 case FXDIB_1bppMask: { 1067 if ((*pos) & (1 << (7 - x % 8))) { 1068 return 0xff000000; 1069 } 1070 return 0; 1071 } 1072 case FXDIB_1bppRgb: { 1073 if ((*pos) & (1 << (7 - x % 8))) { 1074 return m_pPalette ? m_pPalette[1] : 0xffffffff; 1075 } else { 1076 return m_pPalette ? m_pPalette[0] : 0xff000000; 1077 } 1078 break; 1079 } 1080 case FXDIB_8bppMask: 1081 return (*pos) << 24; 1082 case FXDIB_8bppRgb: 1083 return m_pPalette ? m_pPalette[*pos] : (0xff000000 | ((*pos) * 0x10101)); 1084 case FXDIB_Rgb: 1085 case FXDIB_Rgba: 1086 case FXDIB_Rgb32: 1087 return FXARGB_GETDIB(pos) | 0xff000000; 1088 case FXDIB_Argb: 1089 return FXARGB_GETDIB(pos); 1090 default: 1091 break; 1092 } 1093 return 0; 1094 } 1095 #endif 1096 void CFX_DIBitmap::SetPixel(int x, int y, FX_DWORD color) 1097 { 1098 if (m_pBuffer == NULL) { 1099 return; 1100 } 1101 if (x < 0 || x >= m_Width || y < 0 || y >= m_Height) { 1102 return; 1103 } 1104 FX_LPBYTE pos = m_pBuffer + y * m_Pitch + x * GetBPP() / 8; 1105 switch (GetFormat()) { 1106 case FXDIB_1bppMask: 1107 if (color >> 24) { 1108 *pos |= 1 << (7 - x % 8); 1109 } else { 1110 *pos &= ~(1 << (7 - x % 8)); 1111 } 1112 break; 1113 case FXDIB_1bppRgb: 1114 if (m_pPalette) { 1115 if (color == m_pPalette[1]) { 1116 *pos |= 1 << (7 - x % 8); 1117 } else { 1118 *pos &= ~(1 << (7 - x % 8)); 1119 } 1120 } else { 1121 if (color == 0xffffffff) { 1122 *pos |= 1 << (7 - x % 8); 1123 } else { 1124 *pos &= ~(1 << (7 - x % 8)); 1125 } 1126 } 1127 break; 1128 case FXDIB_8bppMask: 1129 *pos = (FX_BYTE)(color >> 24); 1130 break; 1131 case FXDIB_8bppRgb: { 1132 if (m_pPalette) { 1133 for (int i = 0; i < 256; i ++) { 1134 if (m_pPalette[i] == color) { 1135 *pos = (FX_BYTE)i; 1136 return; 1137 } 1138 } 1139 *pos = 0; 1140 } else { 1141 *pos = FXRGB2GRAY(FXARGB_R(color), FXARGB_G(color), FXARGB_B(color)); 1142 } 1143 break; 1144 } 1145 case FXDIB_Rgb: 1146 case FXDIB_Rgb32: { 1147 int alpha = FXARGB_A(color); 1148 pos[0] = (FXARGB_B(color) * alpha + pos[0] * (255 - alpha)) / 255; 1149 pos[1] = (FXARGB_G(color) * alpha + pos[1] * (255 - alpha)) / 255; 1150 pos[2] = (FXARGB_R(color) * alpha + pos[2] * (255 - alpha)) / 255; 1151 break; 1152 } 1153 case FXDIB_Rgba: { 1154 pos[0] = FXARGB_B(color); 1155 pos[1] = FXARGB_G(color); 1156 pos[2] = FXARGB_R(color); 1157 break; 1158 } 1159 case FXDIB_Argb: 1160 FXARGB_SETDIB(pos, color); 1161 break; 1162 default: 1163 break; 1164 } 1165 } 1166 void CFX_DIBitmap::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_bpp, 1167 int dest_width, FX_BOOL bFlipX, int clip_left, int clip_width) const 1168 { 1169 if (m_pBuffer == NULL) { 1170 return; 1171 } 1172 int src_Bpp = m_bpp / 8; 1173 FX_LPBYTE scanline = m_pBuffer + line * m_Pitch; 1174 if (src_Bpp == 0) { 1175 for (int i = 0; i < clip_width; i ++) { 1176 FX_DWORD dest_x = clip_left + i; 1177 FX_DWORD src_x = dest_x * m_Width / dest_width; 1178 if (bFlipX) { 1179 src_x = m_Width - src_x - 1; 1180 } 1181 #ifdef FOXIT_CHROME_BUILD 1182 src_x %= m_Width; 1183 #endif 1184 dest_scan[i] = (scanline[src_x / 8] & (1 << (7 - src_x % 8))) ? 255 : 0; 1185 } 1186 } else if (src_Bpp == 1) { 1187 for (int i = 0; i < clip_width; i ++) { 1188 FX_DWORD dest_x = clip_left + i; 1189 FX_DWORD src_x = dest_x * m_Width / dest_width; 1190 if (bFlipX) { 1191 src_x = m_Width - src_x - 1; 1192 } 1193 #ifdef FOXIT_CHROME_BUILD 1194 src_x %= m_Width; 1195 #endif 1196 int dest_pos = i; 1197 if (m_pPalette) { 1198 if (!IsCmykImage()) { 1199 dest_pos *= 3; 1200 FX_ARGB argb = m_pPalette[scanline[src_x]]; 1201 dest_scan[dest_pos] = FXARGB_B(argb); 1202 dest_scan[dest_pos + 1] = FXARGB_G(argb); 1203 dest_scan[dest_pos + 2] = FXARGB_R(argb); 1204 } else { 1205 dest_pos *= 4; 1206 FX_CMYK cmyk = m_pPalette[scanline[src_x]]; 1207 dest_scan[dest_pos] = FXSYS_GetCValue(cmyk); 1208 dest_scan[dest_pos + 1] = FXSYS_GetMValue(cmyk); 1209 dest_scan[dest_pos + 2] = FXSYS_GetYValue(cmyk); 1210 dest_scan[dest_pos + 3] = FXSYS_GetKValue(cmyk); 1211 } 1212 } else { 1213 dest_scan[dest_pos] = scanline[src_x]; 1214 } 1215 } 1216 } else { 1217 for (int i = 0; i < clip_width; i ++) { 1218 FX_DWORD dest_x = clip_left + i; 1219 FX_DWORD src_x = bFlipX ? (m_Width - dest_x * m_Width / dest_width - 1) * src_Bpp : (dest_x * m_Width / dest_width) * src_Bpp; 1220 #ifdef FOXIT_CHROME_BUILD 1221 src_x %= m_Width * src_Bpp; 1222 #endif 1223 int dest_pos = i * src_Bpp; 1224 for (int b = 0; b < src_Bpp; b ++) { 1225 dest_scan[dest_pos + b] = scanline[src_x + b]; 1226 } 1227 } 1228 } 1229 } 1230 FX_BOOL CFX_DIBitmap::ConvertColorScale(FX_DWORD forecolor, FX_DWORD backcolor) 1231 { 1232 ASSERT(!IsAlphaMask()); 1233 if (m_pBuffer == NULL || IsAlphaMask()) { 1234 return FALSE; 1235 } 1236 int fc, fm, fy, fk, bc, bm, by, bk; 1237 int fr, fg, fb, br, bg, bb; 1238 FX_BOOL isCmykImage = IsCmykImage(); 1239 if (isCmykImage) { 1240 fc = FXSYS_GetCValue(forecolor); 1241 fm = FXSYS_GetMValue(forecolor); 1242 fy = FXSYS_GetYValue(forecolor); 1243 fk = FXSYS_GetKValue(forecolor); 1244 bc = FXSYS_GetCValue(backcolor); 1245 bm = FXSYS_GetMValue(backcolor); 1246 by = FXSYS_GetYValue(backcolor); 1247 bk = FXSYS_GetKValue(backcolor); 1248 } else { 1249 fr = FXSYS_GetRValue(forecolor); 1250 fg = FXSYS_GetGValue(forecolor); 1251 fb = FXSYS_GetBValue(forecolor); 1252 br = FXSYS_GetRValue(backcolor); 1253 bg = FXSYS_GetGValue(backcolor); 1254 bb = FXSYS_GetBValue(backcolor); 1255 } 1256 if (m_bpp <= 8) { 1257 if (isCmykImage) { 1258 if (forecolor == 0xff && backcolor == 0 && m_pPalette == NULL) { 1259 return TRUE; 1260 } 1261 } else if (forecolor == 0 && backcolor == 0xffffff && m_pPalette == NULL) { 1262 return TRUE; 1263 } 1264 if (m_pPalette == NULL) { 1265 BuildPalette(); 1266 } 1267 int size = 1 << m_bpp; 1268 if (isCmykImage) { 1269 for (int i = 0; i < size; i ++) { 1270 FX_BYTE b, g, r; 1271 AdobeCMYK_to_sRGB1(FXSYS_GetCValue(m_pPalette[i]), FXSYS_GetMValue(m_pPalette[i]), FXSYS_GetYValue(m_pPalette[i]), FXSYS_GetKValue(m_pPalette[i]), 1272 r, g, b); 1273 int gray = 255 - FXRGB2GRAY(r, g, b); 1274 m_pPalette[i] = CmykEncode(bc + (fc - bc) * gray / 255, bm + (fm - bm) * gray / 255, 1275 by + (fy - by) * gray / 255, bk + (fk - bk) * gray / 255); 1276 } 1277 } else 1278 for (int i = 0; i < size; i ++) { 1279 int gray = FXRGB2GRAY(FXARGB_R(m_pPalette[i]), FXARGB_G(m_pPalette[i]), FXARGB_B(m_pPalette[i])); 1280 m_pPalette[i] = FXARGB_MAKE(0xff, br + (fr - br) * gray / 255, bg + (fg - bg) * gray / 255, 1281 bb + (fb - bb) * gray / 255); 1282 } 1283 return TRUE; 1284 } 1285 if (isCmykImage) { 1286 if (forecolor == 0xff && backcolor == 0x00) { 1287 for (int row = 0; row < m_Height; row ++) { 1288 FX_LPBYTE scanline = m_pBuffer + row * m_Pitch; 1289 for (int col = 0; col < m_Width; col ++) { 1290 FX_BYTE b, g, r; 1291 AdobeCMYK_to_sRGB1(scanline[0], scanline[1], scanline[2], scanline[3], 1292 r, g, b); 1293 *scanline ++ = 0; 1294 *scanline ++ = 0; 1295 *scanline ++ = 0; 1296 *scanline ++ = 255 - FXRGB2GRAY(r, g, b); 1297 } 1298 } 1299 return TRUE; 1300 } 1301 } else if (forecolor == 0 && backcolor == 0xffffff) { 1302 for (int row = 0; row < m_Height; row ++) { 1303 FX_LPBYTE scanline = m_pBuffer + row * m_Pitch; 1304 int gap = m_bpp / 8 - 2; 1305 for (int col = 0; col < m_Width; col ++) { 1306 int gray = FXRGB2GRAY(scanline[2], scanline[1], scanline[0]); 1307 *scanline ++ = gray; 1308 *scanline ++ = gray; 1309 *scanline = gray; 1310 scanline += gap; 1311 } 1312 } 1313 return TRUE; 1314 } 1315 if (isCmykImage) { 1316 for (int row = 0; row < m_Height; row ++) { 1317 FX_LPBYTE scanline = m_pBuffer + row * m_Pitch; 1318 for (int col = 0; col < m_Width; col ++) { 1319 FX_BYTE b, g, r; 1320 AdobeCMYK_to_sRGB1(scanline[0], scanline[1], scanline[2], scanline[3], 1321 r, g, b); 1322 int gray = 255 - FXRGB2GRAY(r, g, b); 1323 *scanline ++ = bc + (fc - bc) * gray / 255; 1324 *scanline ++ = bm + (fm - bm) * gray / 255; 1325 *scanline ++ = by + (fy - by) * gray / 255; 1326 *scanline ++ = bk + (fk - bk) * gray / 255; 1327 } 1328 } 1329 } else 1330 for (int row = 0; row < m_Height; row ++) { 1331 FX_LPBYTE scanline = m_pBuffer + row * m_Pitch; 1332 int gap = m_bpp / 8 - 2; 1333 for (int col = 0; col < m_Width; col ++) { 1334 int gray = FXRGB2GRAY(scanline[2], scanline[1], scanline[0]); 1335 *scanline ++ = bb + (fb - bb) * gray / 255; 1336 *scanline ++ = bg + (fg - bg) * gray / 255; 1337 *scanline = br + (fr - br) * gray / 255; 1338 scanline += gap; 1339 } 1340 } 1341 return TRUE; 1342 } 1343 FX_BOOL CFX_DIBitmap::DitherFS(const FX_DWORD* pPalette, int pal_size, const FX_RECT* pRect) 1344 { 1345 if (m_pBuffer == NULL) { 1346 return FALSE; 1347 } 1348 if (m_bpp != 8 && m_pPalette != NULL && m_AlphaFlag != 0) { 1349 return FALSE; 1350 } 1351 if (m_Width < 4 && m_Height < 4) { 1352 return FALSE; 1353 } 1354 FX_RECT rect(0, 0, m_Width, m_Height); 1355 if (pRect) { 1356 rect.Intersect(*pRect); 1357 } 1358 FX_BYTE translate[256]; 1359 for (int i = 0; i < 256; i ++) { 1360 int err2 = 65536; 1361 for (int j = 0; j < pal_size; j ++) { 1362 FX_BYTE entry = (FX_BYTE)pPalette[j]; 1363 int err = (int)entry - i; 1364 if (err * err < err2) { 1365 err2 = err * err; 1366 translate[i] = entry; 1367 } 1368 } 1369 } 1370 for (int row = rect.top; row < rect.bottom; row ++) { 1371 FX_LPBYTE scan = m_pBuffer + row * m_Pitch; 1372 FX_LPBYTE next_scan = m_pBuffer + (row + 1) * m_Pitch; 1373 for (int col = rect.left; col < rect.right; col ++) { 1374 int src_pixel = scan[col]; 1375 int dest_pixel = translate[src_pixel]; 1376 scan[col] = (FX_BYTE)dest_pixel; 1377 int error = -dest_pixel + src_pixel; 1378 if (col < rect.right - 1) { 1379 int src = scan[col + 1]; 1380 src += error * 7 / 16; 1381 if (src > 255) { 1382 scan[col + 1] = 255; 1383 } else if (src < 0) { 1384 scan[col + 1] = 0; 1385 } else { 1386 scan[col + 1] = src; 1387 } 1388 } 1389 if (col < rect.right - 1 && row < rect.bottom - 1) { 1390 int src = next_scan[col + 1]; 1391 src += error * 1 / 16; 1392 if (src > 255) { 1393 next_scan[col + 1] = 255; 1394 } else if (src < 0) { 1395 next_scan[col + 1] = 0; 1396 } else { 1397 next_scan[col + 1] = src; 1398 } 1399 } 1400 if (row < rect.bottom - 1) { 1401 int src = next_scan[col]; 1402 src += error * 5 / 16; 1403 if (src > 255) { 1404 next_scan[col] = 255; 1405 } else if (src < 0) { 1406 next_scan[col] = 0; 1407 } else { 1408 next_scan[col] = src; 1409 } 1410 } 1411 if (col > rect.left && row < rect.bottom - 1) { 1412 int src = next_scan[col - 1]; 1413 src += error * 3 / 16; 1414 if (src > 255) { 1415 next_scan[col - 1] = 255; 1416 } else if (src < 0) { 1417 next_scan[col - 1] = 0; 1418 } else { 1419 next_scan[col - 1] = src; 1420 } 1421 } 1422 } 1423 } 1424 return TRUE; 1425 } 1426 CFX_DIBitmap* CFX_DIBSource::FlipImage(FX_BOOL bXFlip, FX_BOOL bYFlip) const 1427 { 1428 CFX_DIBitmap* pFlipped = FX_NEW CFX_DIBitmap; 1429 if (!pFlipped) { 1430 return NULL; 1431 } 1432 if (!pFlipped->Create(m_Width, m_Height, GetFormat())) { 1433 delete pFlipped; 1434 return NULL; 1435 } 1436 pFlipped->CopyPalette(m_pPalette); 1437 FX_LPBYTE pDestBuffer = pFlipped->GetBuffer(); 1438 int Bpp = m_bpp / 8; 1439 for (int row = 0; row < m_Height; row ++) { 1440 FX_LPCBYTE src_scan = GetScanline(row); 1441 FX_LPBYTE dest_scan = pDestBuffer + m_Pitch * (bYFlip ? (m_Height - row - 1) : row); 1442 if (!bXFlip) { 1443 FXSYS_memcpy32(dest_scan, src_scan, m_Pitch); 1444 continue; 1445 } 1446 if (m_bpp == 1) { 1447 FXSYS_memset32(dest_scan, 0, m_Pitch); 1448 for (int col = 0; col < m_Width; col ++) 1449 if (src_scan[col / 8] & (1 << (7 - col % 8))) { 1450 int dest_col = m_Width - col - 1; 1451 dest_scan[dest_col / 8] |= (1 << (7 - dest_col % 8)); 1452 } 1453 } else { 1454 dest_scan += (m_Width - 1) * Bpp; 1455 if (Bpp == 1) { 1456 for (int col = 0; col < m_Width; col ++) { 1457 *dest_scan = *src_scan; 1458 dest_scan --; 1459 src_scan ++; 1460 } 1461 } else if (Bpp == 3) { 1462 for (int col = 0; col < m_Width; col ++) { 1463 dest_scan[0] = src_scan[0]; 1464 dest_scan[1] = src_scan[1]; 1465 dest_scan[2] = src_scan[2]; 1466 dest_scan -= 3; 1467 src_scan += 3; 1468 } 1469 } else { 1470 ASSERT(Bpp == 4); 1471 for (int col = 0; col < m_Width; col ++) { 1472 *(FX_DWORD*)dest_scan = *(FX_DWORD*)src_scan; 1473 dest_scan -= 4; 1474 src_scan += 4; 1475 } 1476 } 1477 } 1478 } 1479 if (m_pAlphaMask) { 1480 pDestBuffer = pFlipped->m_pAlphaMask->GetBuffer(); 1481 FX_DWORD dest_pitch = pFlipped->m_pAlphaMask->GetPitch(); 1482 for (int row = 0; row < m_Height; row ++) { 1483 FX_LPCBYTE src_scan = m_pAlphaMask->GetScanline(row); 1484 FX_LPBYTE dest_scan = pDestBuffer + dest_pitch * (bYFlip ? (m_Height - row - 1) : row); 1485 if (!bXFlip) { 1486 FXSYS_memcpy32(dest_scan, src_scan, dest_pitch); 1487 continue; 1488 } 1489 dest_scan += (m_Width - 1); 1490 for (int col = 0; col < m_Width; col ++) { 1491 *dest_scan = *src_scan; 1492 dest_scan --; 1493 src_scan ++; 1494 } 1495 } 1496 } 1497 return pFlipped; 1498 } 1499 CFX_DIBExtractor::CFX_DIBExtractor(const CFX_DIBSource* pSrc) 1500 { 1501 m_pBitmap = NULL; 1502 if (pSrc->GetBuffer() == NULL) { 1503 m_pBitmap = pSrc->Clone(); 1504 } else { 1505 m_pBitmap = FX_NEW CFX_DIBitmap; 1506 if (!m_pBitmap) { 1507 return; 1508 } 1509 if (!m_pBitmap->Create(pSrc->GetWidth(), pSrc->GetHeight(), pSrc->GetFormat(), pSrc->GetBuffer())) { 1510 delete m_pBitmap; 1511 m_pBitmap = NULL; 1512 return; 1513 } 1514 m_pBitmap->CopyPalette(pSrc->GetPalette()); 1515 m_pBitmap->CopyAlphaMask(pSrc->m_pAlphaMask); 1516 } 1517 } 1518 CFX_DIBExtractor::~CFX_DIBExtractor() 1519 { 1520 if (m_pBitmap) { 1521 delete m_pBitmap; 1522 } 1523 } 1524 CFX_FilteredDIB::CFX_FilteredDIB() 1525 { 1526 m_pScanline = NULL; 1527 m_pSrc = NULL; 1528 } 1529 CFX_FilteredDIB::~CFX_FilteredDIB() 1530 { 1531 if (m_pSrc && m_bAutoDropSrc) { 1532 delete m_pSrc; 1533 } 1534 if (m_pScanline) { 1535 FX_Free(m_pScanline); 1536 } 1537 } 1538 void CFX_FilteredDIB::LoadSrc(const CFX_DIBSource* pSrc, FX_BOOL bAutoDropSrc) 1539 { 1540 m_pSrc = pSrc; 1541 m_bAutoDropSrc = bAutoDropSrc; 1542 m_Width = pSrc->GetWidth(); 1543 m_Height = pSrc->GetHeight(); 1544 FXDIB_Format format = GetDestFormat(); 1545 m_bpp = (FX_BYTE)format; 1546 m_AlphaFlag = (FX_BYTE)(format >> 8); 1547 m_Pitch = (m_Width * (format & 0xff) + 31) / 32 * 4; 1548 m_pPalette = GetDestPalette(); 1549 m_pScanline = FX_Alloc(FX_BYTE, m_Pitch); 1550 } 1551 FX_LPCBYTE CFX_FilteredDIB::GetScanline(int line) const 1552 { 1553 TranslateScanline(m_pScanline, m_pSrc->GetScanline(line)); 1554 return m_pScanline; 1555 } 1556 void CFX_FilteredDIB::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_bpp, 1557 int dest_width, FX_BOOL bFlipX, int clip_left, int clip_width) const 1558 { 1559 m_pSrc->DownSampleScanline(line, dest_scan, dest_bpp, dest_width, bFlipX, clip_left, clip_width); 1560 TranslateDownSamples(dest_scan, dest_scan, clip_width, dest_bpp); 1561 } 1562 CFX_ImageRenderer::CFX_ImageRenderer() 1563 { 1564 m_Status = 0; 1565 m_pTransformer = NULL; 1566 m_bRgbByteOrder = FALSE; 1567 m_BlendType = FXDIB_BLEND_NORMAL; 1568 } 1569 CFX_ImageRenderer::~CFX_ImageRenderer() 1570 { 1571 if (m_pTransformer) { 1572 delete m_pTransformer; 1573 } 1574 } 1575 extern FX_RECT _FXDIB_SwapClipBox(FX_RECT& clip, int width, int height, FX_BOOL bFlipX, FX_BOOL bFlipY); 1576 FX_BOOL CFX_ImageRenderer::Start(CFX_DIBitmap* pDevice, const CFX_ClipRgn* pClipRgn, 1577 const CFX_DIBSource* pSource, int bitmap_alpha, 1578 FX_DWORD mask_color, const CFX_AffineMatrix* pMatrix, 1579 FX_DWORD dib_flags, FX_BOOL bRgbByteOrder, 1580 int alpha_flag, void* pIccTransform, int blend_type) 1581 { 1582 m_Matrix = *pMatrix; 1583 CFX_FloatRect image_rect_f = m_Matrix.GetUnitRect(); 1584 FX_RECT image_rect = image_rect_f.GetOutterRect(); 1585 m_ClipBox = pClipRgn ? pClipRgn->GetBox() : FX_RECT(0, 0, pDevice->GetWidth(), pDevice->GetHeight()); 1586 m_ClipBox.Intersect(image_rect); 1587 if (m_ClipBox.IsEmpty()) { 1588 return FALSE; 1589 } 1590 m_pDevice = pDevice; 1591 m_pClipRgn = pClipRgn; 1592 m_MaskColor = mask_color; 1593 m_BitmapAlpha = bitmap_alpha; 1594 m_Matrix = *pMatrix; 1595 m_Flags = dib_flags; 1596 m_AlphaFlag = alpha_flag; 1597 m_pIccTransform = pIccTransform; 1598 m_bRgbByteOrder = bRgbByteOrder; 1599 m_BlendType = blend_type; 1600 FX_BOOL ret = TRUE; 1601 if ((FXSYS_fabs(m_Matrix.b) >= 0.5f || m_Matrix.a == 0) || 1602 (FXSYS_fabs(m_Matrix.c) >= 0.5f || m_Matrix.d == 0) ) { 1603 if (FXSYS_fabs(m_Matrix.a) < FXSYS_fabs(m_Matrix.b) / 20 && FXSYS_fabs(m_Matrix.d) < FXSYS_fabs(m_Matrix.c) / 20 && 1604 FXSYS_fabs(m_Matrix.a) < 0.5f && FXSYS_fabs(m_Matrix.d) < 0.5f) { 1605 int dest_width = image_rect.Width(); 1606 int dest_height = image_rect.Height(); 1607 FX_RECT bitmap_clip = m_ClipBox; 1608 bitmap_clip.Offset(-image_rect.left, -image_rect.top); 1609 bitmap_clip = _FXDIB_SwapClipBox(bitmap_clip, dest_width, dest_height, m_Matrix.c > 0, m_Matrix.b < 0); 1610 m_Composer.Compose(pDevice, pClipRgn, bitmap_alpha, mask_color, m_ClipBox, TRUE, 1611 m_Matrix.c > 0, m_Matrix.b < 0, m_bRgbByteOrder, alpha_flag, pIccTransform, m_BlendType); 1612 if (!m_Stretcher.Start(&m_Composer, pSource, dest_height, dest_width, bitmap_clip, dib_flags)) { 1613 return FALSE; 1614 } 1615 m_Status = 1; 1616 return TRUE; 1617 } 1618 m_Status = 2; 1619 m_pTransformer = FX_NEW CFX_ImageTransformer; 1620 if (!m_pTransformer) { 1621 return FALSE; 1622 } 1623 m_pTransformer->Start(pSource, &m_Matrix, dib_flags, &m_ClipBox); 1624 return TRUE; 1625 } 1626 int dest_width = image_rect.Width(); 1627 if (m_Matrix.a < 0) { 1628 dest_width = -dest_width; 1629 } 1630 int dest_height = image_rect.Height(); 1631 if (m_Matrix.d > 0) { 1632 dest_height = -dest_height; 1633 } 1634 if (dest_width == 0 || dest_height == 0) { 1635 return FALSE; 1636 } 1637 FX_RECT bitmap_clip = m_ClipBox; 1638 bitmap_clip.Offset(-image_rect.left, -image_rect.top); 1639 m_Composer.Compose(pDevice, pClipRgn, bitmap_alpha, mask_color, 1640 m_ClipBox, FALSE, FALSE, FALSE, m_bRgbByteOrder, alpha_flag, pIccTransform, m_BlendType); 1641 m_Status = 1; 1642 ret = m_Stretcher.Start(&m_Composer, pSource, dest_width, dest_height, bitmap_clip, dib_flags); 1643 return ret; 1644 } 1645 FX_BOOL CFX_ImageRenderer::Continue(IFX_Pause* pPause) 1646 { 1647 if (m_Status == 1) { 1648 return m_Stretcher.Continue(pPause); 1649 } else if (m_Status == 2) { 1650 if (m_pTransformer->Continue(pPause)) { 1651 return TRUE; 1652 } 1653 CFX_DIBitmap* pBitmap = m_pTransformer->m_Storer.Detach(); 1654 if (pBitmap == NULL) { 1655 return FALSE; 1656 } 1657 if (pBitmap->GetBuffer() == NULL) { 1658 delete pBitmap; 1659 return FALSE; 1660 } 1661 if (pBitmap->IsAlphaMask()) { 1662 if (m_BitmapAlpha != 255) { 1663 if (m_AlphaFlag >> 8) { 1664 m_AlphaFlag = (((FX_BYTE)((m_AlphaFlag & 0xff) * m_BitmapAlpha / 255)) | ((m_AlphaFlag >> 8) << 8)); 1665 } else { 1666 m_MaskColor = FXARGB_MUL_ALPHA(m_MaskColor, m_BitmapAlpha); 1667 } 1668 } 1669 m_pDevice->CompositeMask(m_pTransformer->m_ResultLeft, m_pTransformer->m_ResultTop, 1670 pBitmap->GetWidth(), pBitmap->GetHeight(), pBitmap, m_MaskColor, 1671 0, 0, m_BlendType, m_pClipRgn, m_bRgbByteOrder, m_AlphaFlag, m_pIccTransform); 1672 } else { 1673 if (m_BitmapAlpha != 255) { 1674 pBitmap->MultiplyAlpha(m_BitmapAlpha); 1675 } 1676 m_pDevice->CompositeBitmap(m_pTransformer->m_ResultLeft, m_pTransformer->m_ResultTop, 1677 pBitmap->GetWidth(), pBitmap->GetHeight(), pBitmap, 0, 0, m_BlendType, m_pClipRgn, m_bRgbByteOrder, m_pIccTransform); 1678 } 1679 delete pBitmap; 1680 return FALSE; 1681 } 1682 return FALSE; 1683 } 1684 CFX_BitmapStorer::CFX_BitmapStorer() 1685 { 1686 m_pBitmap = NULL; 1687 } 1688 CFX_BitmapStorer::~CFX_BitmapStorer() 1689 { 1690 if (m_pBitmap) { 1691 delete m_pBitmap; 1692 } 1693 } 1694 CFX_DIBitmap* CFX_BitmapStorer::Detach() 1695 { 1696 CFX_DIBitmap* pBitmap = m_pBitmap; 1697 m_pBitmap = NULL; 1698 return pBitmap; 1699 } 1700 void CFX_BitmapStorer::Replace(CFX_DIBitmap* pBitmap) 1701 { 1702 if (m_pBitmap) { 1703 delete m_pBitmap; 1704 } 1705 m_pBitmap = pBitmap; 1706 } 1707 void CFX_BitmapStorer::ComposeScanline(int line, FX_LPCBYTE scanline, FX_LPCBYTE scan_extra_alpha) 1708 { 1709 FX_LPBYTE dest_buf = (FX_LPBYTE)m_pBitmap->GetScanline(line); 1710 FX_LPBYTE dest_alpha_buf = m_pBitmap->m_pAlphaMask ? 1711 (FX_LPBYTE)m_pBitmap->m_pAlphaMask->GetScanline(line) : NULL; 1712 if (dest_buf) { 1713 FXSYS_memcpy32(dest_buf, scanline, m_pBitmap->GetPitch()); 1714 } 1715 if (dest_alpha_buf) { 1716 FXSYS_memcpy32(dest_alpha_buf, scan_extra_alpha, m_pBitmap->m_pAlphaMask->GetPitch()); 1717 } 1718 } 1719 FX_BOOL CFX_BitmapStorer::SetInfo(int width, int height, FXDIB_Format src_format, FX_DWORD* pSrcPalette) 1720 { 1721 m_pBitmap = FX_NEW CFX_DIBitmap; 1722 if (!m_pBitmap) { 1723 return FALSE; 1724 } 1725 if (!m_pBitmap->Create(width, height, src_format)) { 1726 delete m_pBitmap; 1727 m_pBitmap = NULL; 1728 return FALSE; 1729 } 1730 if (pSrcPalette) { 1731 m_pBitmap->CopyPalette(pSrcPalette); 1732 } 1733 return TRUE; 1734 } 1735
