1 // Copyright 2016 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 "core/fpdfapi/render/cpdf_renderstatus.h" 8 9 #include <algorithm> 10 #include <memory> 11 #include <utility> 12 #include <vector> 13 14 #include "core/fpdfapi/font/cpdf_font.h" 15 #include "core/fpdfapi/font/cpdf_type3char.h" 16 #include "core/fpdfapi/font/cpdf_type3font.h" 17 #include "core/fpdfapi/page/cpdf_docpagedata.h" 18 #include "core/fpdfapi/page/cpdf_form.h" 19 #include "core/fpdfapi/page/cpdf_formobject.h" 20 #include "core/fpdfapi/page/cpdf_graphicstates.h" 21 #include "core/fpdfapi/page/cpdf_image.h" 22 #include "core/fpdfapi/page/cpdf_imageobject.h" 23 #include "core/fpdfapi/page/cpdf_meshstream.h" 24 #include "core/fpdfapi/page/cpdf_page.h" 25 #include "core/fpdfapi/page/cpdf_pageobject.h" 26 #include "core/fpdfapi/page/cpdf_pathobject.h" 27 #include "core/fpdfapi/page/cpdf_shadingobject.h" 28 #include "core/fpdfapi/page/cpdf_shadingpattern.h" 29 #include "core/fpdfapi/page/cpdf_textobject.h" 30 #include "core/fpdfapi/page/cpdf_tilingpattern.h" 31 #include "core/fpdfapi/page/pageint.h" 32 #include "core/fpdfapi/parser/cpdf_array.h" 33 #include "core/fpdfapi/parser/cpdf_dictionary.h" 34 #include "core/fpdfapi/parser/cpdf_document.h" 35 #include "core/fpdfapi/render/cpdf_charposlist.h" 36 #include "core/fpdfapi/render/cpdf_devicebuffer.h" 37 #include "core/fpdfapi/render/cpdf_dibsource.h" 38 #include "core/fpdfapi/render/cpdf_docrenderdata.h" 39 #include "core/fpdfapi/render/cpdf_imagerenderer.h" 40 #include "core/fpdfapi/render/cpdf_pagerendercache.h" 41 #include "core/fpdfapi/render/cpdf_rendercontext.h" 42 #include "core/fpdfapi/render/cpdf_renderoptions.h" 43 #include "core/fpdfapi/render/cpdf_scaledrenderbuffer.h" 44 #include "core/fpdfapi/render/cpdf_textrenderer.h" 45 #include "core/fpdfapi/render/cpdf_transferfunc.h" 46 #include "core/fpdfapi/render/cpdf_type3cache.h" 47 #include "core/fpdfdoc/cpdf_occontext.h" 48 #include "core/fxcodec/fx_codec.h" 49 #include "core/fxcrt/cfx_maybe_owned.h" 50 #include "core/fxcrt/fx_safe_types.h" 51 #include "core/fxge/cfx_fxgedevice.h" 52 #include "core/fxge/cfx_graphstatedata.h" 53 #include "core/fxge/cfx_pathdata.h" 54 #include "core/fxge/cfx_renderdevice.h" 55 #include "core/fxge/ifx_renderdevicedriver.h" 56 #include "third_party/base/numerics/safe_math.h" 57 #include "third_party/base/ptr_util.h" 58 #include "third_party/base/stl_util.h" 59 60 #ifdef _SKIA_SUPPORT_ 61 #include "core/fxge/skia/fx_skia_device.h" 62 #endif 63 64 #define SHADING_STEPS 256 65 66 namespace { 67 68 void ReleaseCachedType3(CPDF_Type3Font* pFont) { 69 if (!pFont->m_pDocument) 70 return; 71 72 pFont->m_pDocument->GetRenderData()->ReleaseCachedType3(pFont); 73 pFont->m_pDocument->GetPageData()->ReleaseFont(pFont->GetFontDict()); 74 } 75 76 class CPDF_RefType3Cache { 77 public: 78 explicit CPDF_RefType3Cache(CPDF_Type3Font* pType3Font) 79 : m_dwCount(0), m_pType3Font(pType3Font) {} 80 81 ~CPDF_RefType3Cache() { 82 while (m_dwCount--) 83 ReleaseCachedType3(m_pType3Font); 84 } 85 86 uint32_t m_dwCount; 87 CPDF_Type3Font* const m_pType3Font; 88 }; 89 90 uint32_t CountOutputs( 91 const std::vector<std::unique_ptr<CPDF_Function>>& funcs) { 92 uint32_t total = 0; 93 for (const auto& func : funcs) { 94 if (func) 95 total += func->CountOutputs(); 96 } 97 return total; 98 } 99 100 void DrawAxialShading(CFX_DIBitmap* pBitmap, 101 CFX_Matrix* pObject2Bitmap, 102 CPDF_Dictionary* pDict, 103 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, 104 CPDF_ColorSpace* pCS, 105 int alpha) { 106 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); 107 CPDF_Array* pCoords = pDict->GetArrayFor("Coords"); 108 if (!pCoords) 109 return; 110 111 FX_FLOAT start_x = pCoords->GetNumberAt(0); 112 FX_FLOAT start_y = pCoords->GetNumberAt(1); 113 FX_FLOAT end_x = pCoords->GetNumberAt(2); 114 FX_FLOAT end_y = pCoords->GetNumberAt(3); 115 FX_FLOAT t_min = 0; 116 FX_FLOAT t_max = 1.0f; 117 CPDF_Array* pArray = pDict->GetArrayFor("Domain"); 118 if (pArray) { 119 t_min = pArray->GetNumberAt(0); 120 t_max = pArray->GetNumberAt(1); 121 } 122 bool bStartExtend = false; 123 bool bEndExtend = false; 124 pArray = pDict->GetArrayFor("Extend"); 125 if (pArray) { 126 bStartExtend = !!pArray->GetIntegerAt(0); 127 bEndExtend = !!pArray->GetIntegerAt(1); 128 } 129 int width = pBitmap->GetWidth(); 130 int height = pBitmap->GetHeight(); 131 FX_FLOAT x_span = end_x - start_x; 132 FX_FLOAT y_span = end_y - start_y; 133 FX_FLOAT axis_len_square = (x_span * x_span) + (y_span * y_span); 134 CFX_Matrix matrix; 135 matrix.SetReverse(*pObject2Bitmap); 136 uint32_t total_results = 137 std::max(CountOutputs(funcs), pCS->CountComponents()); 138 CFX_FixedBufGrow<FX_FLOAT, 16> result_array(total_results); 139 FX_FLOAT* pResults = result_array; 140 FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); 141 uint32_t rgb_array[SHADING_STEPS]; 142 for (int i = 0; i < SHADING_STEPS; i++) { 143 FX_FLOAT input = (t_max - t_min) * i / SHADING_STEPS + t_min; 144 int offset = 0; 145 for (const auto& func : funcs) { 146 if (func) { 147 int nresults = 0; 148 if (func->Call(&input, 1, pResults + offset, nresults)) 149 offset += nresults; 150 } 151 } 152 FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; 153 pCS->GetRGB(pResults, R, G, B); 154 rgb_array[i] = 155 FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255), 156 FXSYS_round(G * 255), FXSYS_round(B * 255))); 157 } 158 int pitch = pBitmap->GetPitch(); 159 for (int row = 0; row < height; row++) { 160 uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch); 161 for (int column = 0; column < width; column++) { 162 CFX_PointF pos = matrix.Transform(CFX_PointF( 163 static_cast<FX_FLOAT>(column), static_cast<FX_FLOAT>(row))); 164 FX_FLOAT scale = 165 (((pos.x - start_x) * x_span) + ((pos.y - start_y) * y_span)) / 166 axis_len_square; 167 int index = (int32_t)(scale * (SHADING_STEPS - 1)); 168 if (index < 0) { 169 if (!bStartExtend) 170 continue; 171 172 index = 0; 173 } else if (index >= SHADING_STEPS) { 174 if (!bEndExtend) 175 continue; 176 177 index = SHADING_STEPS - 1; 178 } 179 dib_buf[column] = rgb_array[index]; 180 } 181 } 182 } 183 184 void DrawRadialShading(CFX_DIBitmap* pBitmap, 185 CFX_Matrix* pObject2Bitmap, 186 CPDF_Dictionary* pDict, 187 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, 188 CPDF_ColorSpace* pCS, 189 int alpha) { 190 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); 191 CPDF_Array* pCoords = pDict->GetArrayFor("Coords"); 192 if (!pCoords) 193 return; 194 195 FX_FLOAT start_x = pCoords->GetNumberAt(0); 196 FX_FLOAT start_y = pCoords->GetNumberAt(1); 197 FX_FLOAT start_r = pCoords->GetNumberAt(2); 198 FX_FLOAT end_x = pCoords->GetNumberAt(3); 199 FX_FLOAT end_y = pCoords->GetNumberAt(4); 200 FX_FLOAT end_r = pCoords->GetNumberAt(5); 201 CFX_Matrix matrix; 202 matrix.SetReverse(*pObject2Bitmap); 203 FX_FLOAT t_min = 0; 204 FX_FLOAT t_max = 1.0f; 205 CPDF_Array* pArray = pDict->GetArrayFor("Domain"); 206 if (pArray) { 207 t_min = pArray->GetNumberAt(0); 208 t_max = pArray->GetNumberAt(1); 209 } 210 bool bStartExtend = false; 211 bool bEndExtend = false; 212 pArray = pDict->GetArrayFor("Extend"); 213 if (pArray) { 214 bStartExtend = !!pArray->GetIntegerAt(0); 215 bEndExtend = !!pArray->GetIntegerAt(1); 216 } 217 uint32_t total_results = 218 std::max(CountOutputs(funcs), pCS->CountComponents()); 219 CFX_FixedBufGrow<FX_FLOAT, 16> result_array(total_results); 220 FX_FLOAT* pResults = result_array; 221 FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); 222 uint32_t rgb_array[SHADING_STEPS]; 223 for (int i = 0; i < SHADING_STEPS; i++) { 224 FX_FLOAT input = (t_max - t_min) * i / SHADING_STEPS + t_min; 225 int offset = 0; 226 for (const auto& func : funcs) { 227 if (func) { 228 int nresults; 229 if (func->Call(&input, 1, pResults + offset, nresults)) 230 offset += nresults; 231 } 232 } 233 FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; 234 pCS->GetRGB(pResults, R, G, B); 235 rgb_array[i] = 236 FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255), 237 FXSYS_round(G * 255), FXSYS_round(B * 255))); 238 } 239 FX_FLOAT a = ((start_x - end_x) * (start_x - end_x)) + 240 ((start_y - end_y) * (start_y - end_y)) - 241 ((start_r - end_r) * (start_r - end_r)); 242 int width = pBitmap->GetWidth(); 243 int height = pBitmap->GetHeight(); 244 int pitch = pBitmap->GetPitch(); 245 bool bDecreasing = false; 246 if (start_r > end_r) { 247 int length = (int)FXSYS_sqrt((((start_x - end_x) * (start_x - end_x)) + 248 ((start_y - end_y) * (start_y - end_y)))); 249 if (length < start_r - end_r) { 250 bDecreasing = true; 251 } 252 } 253 for (int row = 0; row < height; row++) { 254 uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch); 255 for (int column = 0; column < width; column++) { 256 CFX_PointF pos = matrix.Transform(CFX_PointF( 257 static_cast<FX_FLOAT>(column), static_cast<FX_FLOAT>(row))); 258 FX_FLOAT b = -2 * (((pos.x - start_x) * (end_x - start_x)) + 259 ((pos.y - start_y) * (end_y - start_y)) + 260 (start_r * (end_r - start_r))); 261 FX_FLOAT c = ((pos.x - start_x) * (pos.x - start_x)) + 262 ((pos.y - start_y) * (pos.y - start_y)) - 263 (start_r * start_r); 264 FX_FLOAT s; 265 if (a == 0) { 266 s = -c / b; 267 } else { 268 FX_FLOAT b2_4ac = (b * b) - 4 * (a * c); 269 if (b2_4ac < 0) { 270 continue; 271 } 272 FX_FLOAT root = FXSYS_sqrt(b2_4ac); 273 FX_FLOAT s1, s2; 274 if (a > 0) { 275 s1 = (-b - root) / (2 * a); 276 s2 = (-b + root) / (2 * a); 277 } else { 278 s2 = (-b - root) / (2 * a); 279 s1 = (-b + root) / (2 * a); 280 } 281 if (bDecreasing) { 282 if (s1 >= 0 || bStartExtend) { 283 s = s1; 284 } else { 285 s = s2; 286 } 287 } else { 288 if (s2 <= 1.0f || bEndExtend) { 289 s = s2; 290 } else { 291 s = s1; 292 } 293 } 294 if ((start_r + s * (end_r - start_r)) < 0) { 295 continue; 296 } 297 } 298 int index = (int32_t)(s * (SHADING_STEPS - 1)); 299 if (index < 0) { 300 if (!bStartExtend) { 301 continue; 302 } 303 index = 0; 304 } 305 if (index >= SHADING_STEPS) { 306 if (!bEndExtend) { 307 continue; 308 } 309 index = SHADING_STEPS - 1; 310 } 311 dib_buf[column] = rgb_array[index]; 312 } 313 } 314 } 315 316 void DrawFuncShading(CFX_DIBitmap* pBitmap, 317 CFX_Matrix* pObject2Bitmap, 318 CPDF_Dictionary* pDict, 319 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, 320 CPDF_ColorSpace* pCS, 321 int alpha) { 322 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); 323 CPDF_Array* pDomain = pDict->GetArrayFor("Domain"); 324 FX_FLOAT xmin = 0, ymin = 0, xmax = 1.0f, ymax = 1.0f; 325 if (pDomain) { 326 xmin = pDomain->GetNumberAt(0); 327 xmax = pDomain->GetNumberAt(1); 328 ymin = pDomain->GetNumberAt(2); 329 ymax = pDomain->GetNumberAt(3); 330 } 331 CFX_Matrix mtDomain2Target = pDict->GetMatrixFor("Matrix"); 332 CFX_Matrix matrix; 333 matrix.SetReverse(*pObject2Bitmap); 334 335 CFX_Matrix reverse_matrix; 336 reverse_matrix.SetReverse(mtDomain2Target); 337 matrix.Concat(reverse_matrix); 338 int width = pBitmap->GetWidth(); 339 int height = pBitmap->GetHeight(); 340 int pitch = pBitmap->GetPitch(); 341 uint32_t total_results = 342 std::max(CountOutputs(funcs), pCS->CountComponents()); 343 CFX_FixedBufGrow<FX_FLOAT, 16> result_array(total_results); 344 FX_FLOAT* pResults = result_array; 345 FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); 346 for (int row = 0; row < height; row++) { 347 uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch); 348 for (int column = 0; column < width; column++) { 349 CFX_PointF pos = matrix.Transform(CFX_PointF( 350 static_cast<FX_FLOAT>(column), static_cast<FX_FLOAT>(row))); 351 if (pos.x < xmin || pos.x > xmax || pos.y < ymin || pos.y > ymax) 352 continue; 353 354 FX_FLOAT input[] = {pos.x, pos.y}; 355 int offset = 0; 356 for (const auto& func : funcs) { 357 if (func) { 358 int nresults; 359 if (func->Call(input, 2, pResults + offset, nresults)) 360 offset += nresults; 361 } 362 } 363 364 FX_FLOAT R = 0.0f; 365 FX_FLOAT G = 0.0f; 366 FX_FLOAT B = 0.0f; 367 pCS->GetRGB(pResults, R, G, B); 368 dib_buf[column] = FXARGB_TODIB(FXARGB_MAKE( 369 alpha, (int32_t)(R * 255), (int32_t)(G * 255), (int32_t)(B * 255))); 370 } 371 } 372 } 373 374 bool GetScanlineIntersect(int y, 375 const CFX_PointF& first, 376 const CFX_PointF& second, 377 FX_FLOAT* x) { 378 if (first.y == second.y) 379 return false; 380 381 if (first.y < second.y) { 382 if (y < first.y || y > second.y) 383 return false; 384 } else if (y < second.y || y > first.y) { 385 return false; 386 } 387 *x = first.x + ((second.x - first.x) * (y - first.y) / (second.y - first.y)); 388 return true; 389 } 390 391 void DrawGouraud(CFX_DIBitmap* pBitmap, 392 int alpha, 393 CPDF_MeshVertex triangle[3]) { 394 FX_FLOAT min_y = triangle[0].position.y; 395 FX_FLOAT max_y = triangle[0].position.y; 396 for (int i = 1; i < 3; i++) { 397 min_y = std::min(min_y, triangle[i].position.y); 398 max_y = std::max(max_y, triangle[i].position.y); 399 } 400 if (min_y == max_y) 401 return; 402 403 int min_yi = std::max(static_cast<int>(FXSYS_floor(min_y)), 0); 404 int max_yi = static_cast<int>(FXSYS_ceil(max_y)); 405 406 if (max_yi >= pBitmap->GetHeight()) 407 max_yi = pBitmap->GetHeight() - 1; 408 409 for (int y = min_yi; y <= max_yi; y++) { 410 int nIntersects = 0; 411 FX_FLOAT inter_x[3]; 412 FX_FLOAT r[3]; 413 FX_FLOAT g[3]; 414 FX_FLOAT b[3]; 415 for (int i = 0; i < 3; i++) { 416 CPDF_MeshVertex& vertex1 = triangle[i]; 417 CPDF_MeshVertex& vertex2 = triangle[(i + 1) % 3]; 418 CFX_PointF& position1 = vertex1.position; 419 CFX_PointF& position2 = vertex2.position; 420 bool bIntersect = 421 GetScanlineIntersect(y, position1, position2, &inter_x[nIntersects]); 422 if (!bIntersect) 423 continue; 424 425 FX_FLOAT y_dist = (y - position1.y) / (position2.y - position1.y); 426 r[nIntersects] = vertex1.r + ((vertex2.r - vertex1.r) * y_dist); 427 g[nIntersects] = vertex1.g + ((vertex2.g - vertex1.g) * y_dist); 428 b[nIntersects] = vertex1.b + ((vertex2.b - vertex1.b) * y_dist); 429 nIntersects++; 430 } 431 if (nIntersects != 2) 432 continue; 433 434 int min_x, max_x, start_index, end_index; 435 if (inter_x[0] < inter_x[1]) { 436 min_x = (int)FXSYS_floor(inter_x[0]); 437 max_x = (int)FXSYS_ceil(inter_x[1]); 438 start_index = 0; 439 end_index = 1; 440 } else { 441 min_x = (int)FXSYS_floor(inter_x[1]); 442 max_x = (int)FXSYS_ceil(inter_x[0]); 443 start_index = 1; 444 end_index = 0; 445 } 446 447 int start_x = std::max(min_x, 0); 448 int end_x = max_x; 449 if (end_x > pBitmap->GetWidth()) 450 end_x = pBitmap->GetWidth(); 451 452 uint8_t* dib_buf = 453 pBitmap->GetBuffer() + y * pBitmap->GetPitch() + start_x * 4; 454 FX_FLOAT r_unit = (r[end_index] - r[start_index]) / (max_x - min_x); 455 FX_FLOAT g_unit = (g[end_index] - g[start_index]) / (max_x - min_x); 456 FX_FLOAT b_unit = (b[end_index] - b[start_index]) / (max_x - min_x); 457 FX_FLOAT R = r[start_index] + (start_x - min_x) * r_unit; 458 FX_FLOAT G = g[start_index] + (start_x - min_x) * g_unit; 459 FX_FLOAT B = b[start_index] + (start_x - min_x) * b_unit; 460 for (int x = start_x; x < end_x; x++) { 461 R += r_unit; 462 G += g_unit; 463 B += b_unit; 464 FXARGB_SETDIB(dib_buf, 465 FXARGB_MAKE(alpha, (int32_t)(R * 255), (int32_t)(G * 255), 466 (int32_t)(B * 255))); 467 dib_buf += 4; 468 } 469 } 470 } 471 472 void DrawFreeGouraudShading( 473 CFX_DIBitmap* pBitmap, 474 CFX_Matrix* pObject2Bitmap, 475 CPDF_Stream* pShadingStream, 476 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, 477 CPDF_ColorSpace* pCS, 478 int alpha) { 479 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); 480 481 CPDF_MeshStream stream(kFreeFormGouraudTriangleMeshShading, funcs, 482 pShadingStream, pCS); 483 if (!stream.Load()) 484 return; 485 486 CPDF_MeshVertex triangle[3]; 487 FXSYS_memset(triangle, 0, sizeof(triangle)); 488 489 while (!stream.BitStream()->IsEOF()) { 490 CPDF_MeshVertex vertex; 491 uint32_t flag; 492 if (!stream.ReadVertex(*pObject2Bitmap, &vertex, &flag)) 493 return; 494 495 if (flag == 0) { 496 triangle[0] = vertex; 497 for (int j = 1; j < 3; j++) { 498 uint32_t tflag; 499 if (!stream.ReadVertex(*pObject2Bitmap, &triangle[j], &tflag)) 500 return; 501 } 502 } else { 503 if (flag == 1) 504 triangle[0] = triangle[1]; 505 506 triangle[1] = triangle[2]; 507 triangle[2] = vertex; 508 } 509 DrawGouraud(pBitmap, alpha, triangle); 510 } 511 } 512 513 void DrawLatticeGouraudShading( 514 CFX_DIBitmap* pBitmap, 515 CFX_Matrix* pObject2Bitmap, 516 CPDF_Stream* pShadingStream, 517 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, 518 CPDF_ColorSpace* pCS, 519 int alpha) { 520 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); 521 522 int row_verts = pShadingStream->GetDict()->GetIntegerFor("VerticesPerRow"); 523 if (row_verts < 2) 524 return; 525 526 CPDF_MeshStream stream(kLatticeFormGouraudTriangleMeshShading, funcs, 527 pShadingStream, pCS); 528 if (!stream.Load()) 529 return; 530 531 std::unique_ptr<CPDF_MeshVertex, FxFreeDeleter> vertex( 532 FX_Alloc2D(CPDF_MeshVertex, row_verts, 2)); 533 if (!stream.ReadVertexRow(*pObject2Bitmap, row_verts, vertex.get())) 534 return; 535 536 int last_index = 0; 537 while (1) { 538 CPDF_MeshVertex* last_row = vertex.get() + last_index * row_verts; 539 CPDF_MeshVertex* this_row = vertex.get() + (1 - last_index) * row_verts; 540 if (!stream.ReadVertexRow(*pObject2Bitmap, row_verts, this_row)) 541 return; 542 543 CPDF_MeshVertex triangle[3]; 544 for (int i = 1; i < row_verts; i++) { 545 triangle[0] = last_row[i]; 546 triangle[1] = this_row[i - 1]; 547 triangle[2] = last_row[i - 1]; 548 DrawGouraud(pBitmap, alpha, triangle); 549 triangle[2] = this_row[i]; 550 DrawGouraud(pBitmap, alpha, triangle); 551 } 552 last_index = 1 - last_index; 553 } 554 } 555 556 struct Coon_BezierCoeff { 557 float a, b, c, d; 558 void FromPoints(float p0, float p1, float p2, float p3) { 559 a = -p0 + 3 * p1 - 3 * p2 + p3; 560 b = 3 * p0 - 6 * p1 + 3 * p2; 561 c = -3 * p0 + 3 * p1; 562 d = p0; 563 } 564 Coon_BezierCoeff first_half() { 565 Coon_BezierCoeff result; 566 result.a = a / 8; 567 result.b = b / 4; 568 result.c = c / 2; 569 result.d = d; 570 return result; 571 } 572 Coon_BezierCoeff second_half() { 573 Coon_BezierCoeff result; 574 result.a = a / 8; 575 result.b = 3 * a / 8 + b / 4; 576 result.c = 3 * a / 8 + b / 2 + c / 2; 577 result.d = a / 8 + b / 4 + c / 2 + d; 578 return result; 579 } 580 void GetPoints(float p[4]) { 581 p[0] = d; 582 p[1] = c / 3 + p[0]; 583 p[2] = b / 3 - p[0] + 2 * p[1]; 584 p[3] = a + p[0] - 3 * p[1] + 3 * p[2]; 585 } 586 void GetPointsReverse(float p[4]) { 587 p[3] = d; 588 p[2] = c / 3 + p[3]; 589 p[1] = b / 3 - p[3] + 2 * p[2]; 590 p[0] = a + p[3] - 3 * p[2] + 3 * p[1]; 591 } 592 void BezierInterpol(Coon_BezierCoeff& C1, 593 Coon_BezierCoeff& C2, 594 Coon_BezierCoeff& D1, 595 Coon_BezierCoeff& D2) { 596 a = (D1.a + D2.a) / 2; 597 b = (D1.b + D2.b) / 2; 598 c = (D1.c + D2.c) / 2 - (C1.a / 8 + C1.b / 4 + C1.c / 2) + 599 (C2.a / 8 + C2.b / 4) + (-C1.d + D2.d) / 2 - (C2.a + C2.b) / 2; 600 d = C1.a / 8 + C1.b / 4 + C1.c / 2 + C1.d; 601 } 602 float Distance() { 603 float dis = a + b + c; 604 return dis < 0 ? -dis : dis; 605 } 606 }; 607 608 struct Coon_Bezier { 609 Coon_BezierCoeff x, y; 610 void FromPoints(float x0, 611 float y0, 612 float x1, 613 float y1, 614 float x2, 615 float y2, 616 float x3, 617 float y3) { 618 x.FromPoints(x0, x1, x2, x3); 619 y.FromPoints(y0, y1, y2, y3); 620 } 621 622 Coon_Bezier first_half() { 623 Coon_Bezier result; 624 result.x = x.first_half(); 625 result.y = y.first_half(); 626 return result; 627 } 628 629 Coon_Bezier second_half() { 630 Coon_Bezier result; 631 result.x = x.second_half(); 632 result.y = y.second_half(); 633 return result; 634 } 635 636 void BezierInterpol(Coon_Bezier& C1, 637 Coon_Bezier& C2, 638 Coon_Bezier& D1, 639 Coon_Bezier& D2) { 640 x.BezierInterpol(C1.x, C2.x, D1.x, D2.x); 641 y.BezierInterpol(C1.y, C2.y, D1.y, D2.y); 642 } 643 644 void GetPoints(std::vector<FX_PATHPOINT>& pPoints, size_t start_idx) { 645 float p[4]; 646 int i; 647 x.GetPoints(p); 648 for (i = 0; i < 4; i++) 649 pPoints[start_idx + i].m_Point.x = p[i]; 650 651 y.GetPoints(p); 652 for (i = 0; i < 4; i++) 653 pPoints[start_idx + i].m_Point.y = p[i]; 654 } 655 656 void GetPointsReverse(std::vector<FX_PATHPOINT>& pPoints, size_t start_idx) { 657 float p[4]; 658 int i; 659 x.GetPointsReverse(p); 660 for (i = 0; i < 4; i++) 661 pPoints[i + start_idx].m_Point.x = p[i]; 662 663 y.GetPointsReverse(p); 664 for (i = 0; i < 4; i++) 665 pPoints[i + start_idx].m_Point.y = p[i]; 666 } 667 668 float Distance() { return x.Distance() + y.Distance(); } 669 }; 670 671 int BiInterpolImpl(int c0, 672 int c1, 673 int c2, 674 int c3, 675 int x, 676 int y, 677 int x_scale, 678 int y_scale) { 679 int x1 = c0 + (c3 - c0) * x / x_scale; 680 int x2 = c1 + (c2 - c1) * x / x_scale; 681 return x1 + (x2 - x1) * y / y_scale; 682 } 683 684 struct Coon_Color { 685 Coon_Color() { FXSYS_memset(comp, 0, sizeof(int) * 3); } 686 int comp[3]; 687 688 void BiInterpol(Coon_Color colors[4], 689 int x, 690 int y, 691 int x_scale, 692 int y_scale) { 693 for (int i = 0; i < 3; i++) { 694 comp[i] = BiInterpolImpl(colors[0].comp[i], colors[1].comp[i], 695 colors[2].comp[i], colors[3].comp[i], x, y, 696 x_scale, y_scale); 697 } 698 } 699 700 int Distance(Coon_Color& o) { 701 return std::max({FXSYS_abs(comp[0] - o.comp[0]), 702 FXSYS_abs(comp[1] - o.comp[1]), 703 FXSYS_abs(comp[2] - o.comp[2])}); 704 } 705 }; 706 707 #define COONCOLOR_THRESHOLD 4 708 struct CPDF_PatchDrawer { 709 Coon_Color patch_colors[4]; 710 int max_delta; 711 CFX_PathData path; 712 CFX_RenderDevice* pDevice; 713 int fill_mode; 714 int alpha; 715 void Draw(int x_scale, 716 int y_scale, 717 int left, 718 int bottom, 719 Coon_Bezier C1, 720 Coon_Bezier C2, 721 Coon_Bezier D1, 722 Coon_Bezier D2) { 723 bool bSmall = C1.Distance() < 2 && C2.Distance() < 2 && D1.Distance() < 2 && 724 D2.Distance() < 2; 725 Coon_Color div_colors[4]; 726 int d_bottom = 0; 727 int d_left = 0; 728 int d_top = 0; 729 int d_right = 0; 730 div_colors[0].BiInterpol(patch_colors, left, bottom, x_scale, y_scale); 731 if (!bSmall) { 732 div_colors[1].BiInterpol(patch_colors, left, bottom + 1, x_scale, 733 y_scale); 734 div_colors[2].BiInterpol(patch_colors, left + 1, bottom + 1, x_scale, 735 y_scale); 736 div_colors[3].BiInterpol(patch_colors, left + 1, bottom, x_scale, 737 y_scale); 738 d_bottom = div_colors[3].Distance(div_colors[0]); 739 d_left = div_colors[1].Distance(div_colors[0]); 740 d_top = div_colors[1].Distance(div_colors[2]); 741 d_right = div_colors[2].Distance(div_colors[3]); 742 } 743 744 if (bSmall || 745 (d_bottom < COONCOLOR_THRESHOLD && d_left < COONCOLOR_THRESHOLD && 746 d_top < COONCOLOR_THRESHOLD && d_right < COONCOLOR_THRESHOLD)) { 747 std::vector<FX_PATHPOINT>& pPoints = path.GetPoints(); 748 C1.GetPoints(pPoints, 0); 749 D2.GetPoints(pPoints, 3); 750 C2.GetPointsReverse(pPoints, 6); 751 D1.GetPointsReverse(pPoints, 9); 752 int fillFlags = FXFILL_WINDING | FXFILL_FULLCOVER; 753 if (fill_mode & RENDER_NOPATHSMOOTH) { 754 fillFlags |= FXFILL_NOPATHSMOOTH; 755 } 756 pDevice->DrawPath( 757 &path, nullptr, nullptr, 758 FXARGB_MAKE(alpha, div_colors[0].comp[0], div_colors[0].comp[1], 759 div_colors[0].comp[2]), 760 0, fillFlags); 761 } else { 762 if (d_bottom < COONCOLOR_THRESHOLD && d_top < COONCOLOR_THRESHOLD) { 763 Coon_Bezier m1; 764 m1.BezierInterpol(D1, D2, C1, C2); 765 y_scale *= 2; 766 bottom *= 2; 767 Draw(x_scale, y_scale, left, bottom, C1, m1, D1.first_half(), 768 D2.first_half()); 769 Draw(x_scale, y_scale, left, bottom + 1, m1, C2, D1.second_half(), 770 D2.second_half()); 771 } else if (d_left < COONCOLOR_THRESHOLD && 772 d_right < COONCOLOR_THRESHOLD) { 773 Coon_Bezier m2; 774 m2.BezierInterpol(C1, C2, D1, D2); 775 x_scale *= 2; 776 left *= 2; 777 Draw(x_scale, y_scale, left, bottom, C1.first_half(), C2.first_half(), 778 D1, m2); 779 Draw(x_scale, y_scale, left + 1, bottom, C1.second_half(), 780 C2.second_half(), m2, D2); 781 } else { 782 Coon_Bezier m1, m2; 783 m1.BezierInterpol(D1, D2, C1, C2); 784 m2.BezierInterpol(C1, C2, D1, D2); 785 Coon_Bezier m1f = m1.first_half(); 786 Coon_Bezier m1s = m1.second_half(); 787 Coon_Bezier m2f = m2.first_half(); 788 Coon_Bezier m2s = m2.second_half(); 789 x_scale *= 2; 790 y_scale *= 2; 791 left *= 2; 792 bottom *= 2; 793 Draw(x_scale, y_scale, left, bottom, C1.first_half(), m1f, 794 D1.first_half(), m2f); 795 Draw(x_scale, y_scale, left, bottom + 1, m1f, C2.first_half(), 796 D1.second_half(), m2s); 797 Draw(x_scale, y_scale, left + 1, bottom, C1.second_half(), m1s, m2f, 798 D2.first_half()); 799 Draw(x_scale, y_scale, left + 1, bottom + 1, m1s, C2.second_half(), m2s, 800 D2.second_half()); 801 } 802 } 803 } 804 }; 805 806 void DrawCoonPatchMeshes( 807 ShadingType type, 808 CFX_DIBitmap* pBitmap, 809 CFX_Matrix* pObject2Bitmap, 810 CPDF_Stream* pShadingStream, 811 const std::vector<std::unique_ptr<CPDF_Function>>& funcs, 812 CPDF_ColorSpace* pCS, 813 int fill_mode, 814 int alpha) { 815 ASSERT(pBitmap->GetFormat() == FXDIB_Argb); 816 ASSERT(type == kCoonsPatchMeshShading || 817 type == kTensorProductPatchMeshShading); 818 819 CFX_FxgeDevice device; 820 device.Attach(pBitmap, false, nullptr, false); 821 CPDF_MeshStream stream(type, funcs, pShadingStream, pCS); 822 if (!stream.Load()) 823 return; 824 825 CPDF_PatchDrawer patch; 826 patch.alpha = alpha; 827 patch.pDevice = &device; 828 patch.fill_mode = fill_mode; 829 830 for (int i = 0; i < 13; i++) { 831 patch.path.AppendPoint( 832 CFX_PointF(), i == 0 ? FXPT_TYPE::MoveTo : FXPT_TYPE::BezierTo, false); 833 } 834 835 CFX_PointF coords[16]; 836 int point_count = type == kTensorProductPatchMeshShading ? 16 : 12; 837 while (!stream.BitStream()->IsEOF()) { 838 if (!stream.CanReadFlag()) 839 break; 840 uint32_t flag = stream.ReadFlag(); 841 int iStartPoint = 0, iStartColor = 0, i = 0; 842 if (flag) { 843 iStartPoint = 4; 844 iStartColor = 2; 845 CFX_PointF tempCoords[4]; 846 for (i = 0; i < 4; i++) { 847 tempCoords[i] = coords[(flag * 3 + i) % 12]; 848 } 849 FXSYS_memcpy(coords, tempCoords, sizeof(tempCoords)); 850 Coon_Color tempColors[2]; 851 tempColors[0] = patch.patch_colors[flag]; 852 tempColors[1] = patch.patch_colors[(flag + 1) % 4]; 853 FXSYS_memcpy(patch.patch_colors, tempColors, sizeof(Coon_Color) * 2); 854 } 855 for (i = iStartPoint; i < point_count; i++) { 856 if (!stream.CanReadCoords()) 857 break; 858 coords[i] = pObject2Bitmap->Transform(stream.ReadCoords()); 859 } 860 861 for (i = iStartColor; i < 4; i++) { 862 if (!stream.CanReadColor()) 863 break; 864 865 FX_FLOAT r; 866 FX_FLOAT g; 867 FX_FLOAT b; 868 std::tie(r, g, b) = stream.ReadColor(); 869 870 patch.patch_colors[i].comp[0] = (int32_t)(r * 255); 871 patch.patch_colors[i].comp[1] = (int32_t)(g * 255); 872 patch.patch_colors[i].comp[2] = (int32_t)(b * 255); 873 } 874 CFX_FloatRect bbox = CFX_FloatRect::GetBBox(coords, point_count); 875 if (bbox.right <= 0 || bbox.left >= (FX_FLOAT)pBitmap->GetWidth() || 876 bbox.top <= 0 || bbox.bottom >= (FX_FLOAT)pBitmap->GetHeight()) { 877 continue; 878 } 879 Coon_Bezier C1, C2, D1, D2; 880 C1.FromPoints(coords[0].x, coords[0].y, coords[11].x, coords[11].y, 881 coords[10].x, coords[10].y, coords[9].x, coords[9].y); 882 C2.FromPoints(coords[3].x, coords[3].y, coords[4].x, coords[4].y, 883 coords[5].x, coords[5].y, coords[6].x, coords[6].y); 884 D1.FromPoints(coords[0].x, coords[0].y, coords[1].x, coords[1].y, 885 coords[2].x, coords[2].y, coords[3].x, coords[3].y); 886 D2.FromPoints(coords[9].x, coords[9].y, coords[8].x, coords[8].y, 887 coords[7].x, coords[7].y, coords[6].x, coords[6].y); 888 patch.Draw(1, 1, 0, 0, C1, C2, D1, D2); 889 } 890 } 891 892 std::unique_ptr<CFX_DIBitmap> DrawPatternBitmap( 893 CPDF_Document* pDoc, 894 CPDF_PageRenderCache* pCache, 895 CPDF_TilingPattern* pPattern, 896 const CFX_Matrix* pObject2Device, 897 int width, 898 int height, 899 int flags) { 900 std::unique_ptr<CFX_DIBitmap> pBitmap(new CFX_DIBitmap); 901 if (!pBitmap->Create(width, height, 902 pPattern->colored() ? FXDIB_Argb : FXDIB_8bppMask)) { 903 return nullptr; 904 } 905 CFX_FxgeDevice bitmap_device; 906 bitmap_device.Attach(pBitmap.get(), false, nullptr, false); 907 pBitmap->Clear(0); 908 CFX_FloatRect cell_bbox = pPattern->bbox(); 909 pPattern->pattern_to_form()->TransformRect(cell_bbox); 910 pObject2Device->TransformRect(cell_bbox); 911 CFX_FloatRect bitmap_rect(0.0f, 0.0f, (FX_FLOAT)width, (FX_FLOAT)height); 912 CFX_Matrix mtAdjust; 913 mtAdjust.MatchRect(bitmap_rect, cell_bbox); 914 915 CFX_Matrix mtPattern2Bitmap = *pObject2Device; 916 mtPattern2Bitmap.Concat(mtAdjust); 917 CPDF_RenderOptions options; 918 if (!pPattern->colored()) 919 options.m_ColorMode = RENDER_COLOR_ALPHA; 920 921 flags |= RENDER_FORCE_HALFTONE; 922 options.m_Flags = flags; 923 CPDF_RenderContext context(pDoc, pCache); 924 context.AppendLayer(pPattern->form(), &mtPattern2Bitmap); 925 context.Render(&bitmap_device, &options, nullptr); 926 #if defined _SKIA_SUPPORT_PATHS_ 927 bitmap_device.Flush(); 928 pBitmap->UnPreMultiply(); 929 #endif 930 return pBitmap; 931 } 932 933 bool IsAvailableMatrix(const CFX_Matrix& matrix) { 934 if (matrix.a == 0 || matrix.d == 0) 935 return matrix.b != 0 && matrix.c != 0; 936 937 if (matrix.b == 0 || matrix.c == 0) 938 return matrix.a != 0 && matrix.d != 0; 939 940 return true; 941 } 942 943 } // namespace 944 945 // static 946 int CPDF_RenderStatus::s_CurrentRecursionDepth = 0; 947 948 CPDF_RenderStatus::CPDF_RenderStatus() 949 : m_pFormResource(nullptr), 950 m_pPageResource(nullptr), 951 m_pContext(nullptr), 952 m_bStopped(false), 953 m_pDevice(nullptr), 954 m_pCurObj(nullptr), 955 m_pStopObj(nullptr), 956 m_bPrint(false), 957 m_Transparency(0), 958 m_bDropObjects(false), 959 m_bStdCS(false), 960 m_GroupFamily(0), 961 m_bLoadMask(false), 962 m_pType3Char(nullptr), 963 m_T3FillColor(0), 964 m_curBlend(FXDIB_BLEND_NORMAL) {} 965 966 CPDF_RenderStatus::~CPDF_RenderStatus() {} 967 968 bool CPDF_RenderStatus::Initialize(CPDF_RenderContext* pContext, 969 CFX_RenderDevice* pDevice, 970 const CFX_Matrix* pDeviceMatrix, 971 const CPDF_PageObject* pStopObj, 972 const CPDF_RenderStatus* pParentState, 973 const CPDF_GraphicStates* pInitialStates, 974 const CPDF_RenderOptions* pOptions, 975 int transparency, 976 bool bDropObjects, 977 CPDF_Dictionary* pFormResource, 978 bool bStdCS, 979 CPDF_Type3Char* pType3Char, 980 FX_ARGB fill_color, 981 uint32_t GroupFamily, 982 bool bLoadMask) { 983 m_pContext = pContext; 984 m_pDevice = pDevice; 985 m_bPrint = m_pDevice->GetDeviceClass() != FXDC_DISPLAY; 986 if (pDeviceMatrix) { 987 m_DeviceMatrix = *pDeviceMatrix; 988 } 989 m_pStopObj = pStopObj; 990 if (pOptions) { 991 m_Options = *pOptions; 992 } 993 m_bDropObjects = bDropObjects; 994 m_bStdCS = bStdCS; 995 m_T3FillColor = fill_color; 996 m_pType3Char = pType3Char; 997 m_GroupFamily = GroupFamily; 998 m_bLoadMask = bLoadMask; 999 m_pFormResource = pFormResource; 1000 m_pPageResource = m_pContext->GetPageResources(); 1001 if (pInitialStates && !m_pType3Char) { 1002 m_InitialStates.CopyStates(*pInitialStates); 1003 if (pParentState) { 1004 if (!m_InitialStates.m_ColorState.HasFillColor()) { 1005 m_InitialStates.m_ColorState.SetFillRGB( 1006 pParentState->m_InitialStates.m_ColorState.GetFillRGB()); 1007 m_InitialStates.m_ColorState.GetMutableFillColor()->Copy( 1008 pParentState->m_InitialStates.m_ColorState.GetFillColor()); 1009 } 1010 if (!m_InitialStates.m_ColorState.HasStrokeColor()) { 1011 m_InitialStates.m_ColorState.SetStrokeRGB( 1012 pParentState->m_InitialStates.m_ColorState.GetFillRGB()); 1013 m_InitialStates.m_ColorState.GetMutableStrokeColor()->Copy( 1014 pParentState->m_InitialStates.m_ColorState.GetStrokeColor()); 1015 } 1016 } 1017 } else { 1018 m_InitialStates.DefaultStates(); 1019 } 1020 m_pImageRenderer.reset(); 1021 m_Transparency = transparency; 1022 return true; 1023 } 1024 1025 void CPDF_RenderStatus::RenderObjectList( 1026 const CPDF_PageObjectHolder* pObjectHolder, 1027 const CFX_Matrix* pObj2Device) { 1028 #if defined _SKIA_SUPPORT_ 1029 DebugVerifyDeviceIsPreMultiplied(); 1030 #endif 1031 CFX_FloatRect clip_rect(m_pDevice->GetClipBox()); 1032 CFX_Matrix device2object; 1033 device2object.SetReverse(*pObj2Device); 1034 device2object.TransformRect(clip_rect); 1035 1036 for (const auto& pCurObj : *pObjectHolder->GetPageObjectList()) { 1037 if (pCurObj.get() == m_pStopObj) { 1038 m_bStopped = true; 1039 return; 1040 } 1041 if (!pCurObj) 1042 continue; 1043 1044 if (pCurObj->m_Left > clip_rect.right || 1045 pCurObj->m_Right < clip_rect.left || 1046 pCurObj->m_Bottom > clip_rect.top || 1047 pCurObj->m_Top < clip_rect.bottom) { 1048 continue; 1049 } 1050 RenderSingleObject(pCurObj.get(), pObj2Device); 1051 if (m_bStopped) 1052 return; 1053 } 1054 #if defined _SKIA_SUPPORT_ 1055 DebugVerifyDeviceIsPreMultiplied(); 1056 #endif 1057 } 1058 1059 void CPDF_RenderStatus::RenderSingleObject(CPDF_PageObject* pObj, 1060 const CFX_Matrix* pObj2Device) { 1061 #if defined _SKIA_SUPPORT_ 1062 DebugVerifyDeviceIsPreMultiplied(); 1063 #endif 1064 CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth); 1065 if (++s_CurrentRecursionDepth > kRenderMaxRecursionDepth) { 1066 return; 1067 } 1068 m_pCurObj = pObj; 1069 if (m_Options.m_pOCContext && pObj->m_ContentMark) { 1070 if (!m_Options.m_pOCContext->CheckObjectVisible(pObj)) { 1071 return; 1072 } 1073 } 1074 ProcessClipPath(pObj->m_ClipPath, pObj2Device); 1075 if (ProcessTransparency(pObj, pObj2Device)) { 1076 return; 1077 } 1078 ProcessObjectNoClip(pObj, pObj2Device); 1079 #if defined _SKIA_SUPPORT_ 1080 DebugVerifyDeviceIsPreMultiplied(); 1081 #endif 1082 } 1083 1084 bool CPDF_RenderStatus::ContinueSingleObject(CPDF_PageObject* pObj, 1085 const CFX_Matrix* pObj2Device, 1086 IFX_Pause* pPause) { 1087 if (m_pImageRenderer) { 1088 if (m_pImageRenderer->Continue(pPause)) 1089 return true; 1090 1091 if (!m_pImageRenderer->GetResult()) 1092 DrawObjWithBackground(pObj, pObj2Device); 1093 m_pImageRenderer.reset(); 1094 return false; 1095 } 1096 1097 m_pCurObj = pObj; 1098 if (m_Options.m_pOCContext && pObj->m_ContentMark && 1099 !m_Options.m_pOCContext->CheckObjectVisible(pObj)) { 1100 return false; 1101 } 1102 1103 ProcessClipPath(pObj->m_ClipPath, pObj2Device); 1104 if (ProcessTransparency(pObj, pObj2Device)) 1105 return false; 1106 1107 if (pObj->IsImage()) { 1108 m_pImageRenderer = pdfium::MakeUnique<CPDF_ImageRenderer>(); 1109 if (!m_pImageRenderer->Start(this, pObj, pObj2Device, false, 1110 FXDIB_BLEND_NORMAL)) { 1111 if (!m_pImageRenderer->GetResult()) 1112 DrawObjWithBackground(pObj, pObj2Device); 1113 m_pImageRenderer.reset(); 1114 return false; 1115 } 1116 return ContinueSingleObject(pObj, pObj2Device, pPause); 1117 } 1118 1119 ProcessObjectNoClip(pObj, pObj2Device); 1120 return false; 1121 } 1122 1123 bool CPDF_RenderStatus::GetObjectClippedRect(const CPDF_PageObject* pObj, 1124 const CFX_Matrix* pObj2Device, 1125 bool bLogical, 1126 FX_RECT& rect) const { 1127 rect = pObj->GetBBox(pObj2Device); 1128 FX_RECT rtClip = m_pDevice->GetClipBox(); 1129 if (!bLogical) { 1130 CFX_Matrix dCTM = m_pDevice->GetCTM(); 1131 FX_FLOAT a = FXSYS_fabs(dCTM.a); 1132 FX_FLOAT d = FXSYS_fabs(dCTM.d); 1133 if (a != 1.0f || d != 1.0f) { 1134 rect.right = rect.left + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Width() * a); 1135 rect.bottom = rect.top + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Height() * d); 1136 rtClip.right = 1137 rtClip.left + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Width() * a); 1138 rtClip.bottom = 1139 rtClip.top + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Height() * d); 1140 } 1141 } 1142 rect.Intersect(rtClip); 1143 return rect.IsEmpty(); 1144 } 1145 1146 void CPDF_RenderStatus::ProcessObjectNoClip(CPDF_PageObject* pObj, 1147 const CFX_Matrix* pObj2Device) { 1148 #if defined _SKIA_SUPPORT_ 1149 DebugVerifyDeviceIsPreMultiplied(); 1150 #endif 1151 bool bRet = false; 1152 switch (pObj->GetType()) { 1153 case CPDF_PageObject::TEXT: 1154 bRet = ProcessText(pObj->AsText(), pObj2Device, nullptr); 1155 break; 1156 case CPDF_PageObject::PATH: 1157 bRet = ProcessPath(pObj->AsPath(), pObj2Device); 1158 break; 1159 case CPDF_PageObject::IMAGE: 1160 bRet = ProcessImage(pObj->AsImage(), pObj2Device); 1161 break; 1162 case CPDF_PageObject::SHADING: 1163 ProcessShading(pObj->AsShading(), pObj2Device); 1164 return; 1165 case CPDF_PageObject::FORM: 1166 bRet = ProcessForm(pObj->AsForm(), pObj2Device); 1167 break; 1168 } 1169 if (!bRet) 1170 DrawObjWithBackground(pObj, pObj2Device); 1171 #if defined _SKIA_SUPPORT_ 1172 DebugVerifyDeviceIsPreMultiplied(); 1173 #endif 1174 } 1175 1176 bool CPDF_RenderStatus::DrawObjWithBlend(CPDF_PageObject* pObj, 1177 const CFX_Matrix* pObj2Device) { 1178 bool bRet = false; 1179 switch (pObj->GetType()) { 1180 case CPDF_PageObject::PATH: 1181 bRet = ProcessPath(pObj->AsPath(), pObj2Device); 1182 break; 1183 case CPDF_PageObject::IMAGE: 1184 bRet = ProcessImage(pObj->AsImage(), pObj2Device); 1185 break; 1186 case CPDF_PageObject::FORM: 1187 bRet = ProcessForm(pObj->AsForm(), pObj2Device); 1188 break; 1189 default: 1190 break; 1191 } 1192 return bRet; 1193 } 1194 1195 void CPDF_RenderStatus::GetScaledMatrix(CFX_Matrix& matrix) const { 1196 CFX_Matrix dCTM = m_pDevice->GetCTM(); 1197 matrix.a *= FXSYS_fabs(dCTM.a); 1198 matrix.d *= FXSYS_fabs(dCTM.d); 1199 } 1200 1201 void CPDF_RenderStatus::DrawObjWithBackground(CPDF_PageObject* pObj, 1202 const CFX_Matrix* pObj2Device) { 1203 FX_RECT rect; 1204 if (GetObjectClippedRect(pObj, pObj2Device, false, rect)) { 1205 return; 1206 } 1207 int res = 300; 1208 if (pObj->IsImage() && 1209 m_pDevice->GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) { 1210 res = 0; 1211 } 1212 CPDF_ScaledRenderBuffer buffer; 1213 if (!buffer.Initialize(m_pContext, m_pDevice, rect, pObj, &m_Options, res)) { 1214 return; 1215 } 1216 CFX_Matrix matrix = *pObj2Device; 1217 matrix.Concat(*buffer.GetMatrix()); 1218 GetScaledMatrix(matrix); 1219 CPDF_Dictionary* pFormResource = nullptr; 1220 if (pObj->IsForm()) { 1221 const CPDF_FormObject* pFormObj = pObj->AsForm(); 1222 if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) { 1223 pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources"); 1224 } 1225 } 1226 CPDF_RenderStatus status; 1227 status.Initialize(m_pContext, buffer.GetDevice(), buffer.GetMatrix(), nullptr, 1228 nullptr, nullptr, &m_Options, m_Transparency, 1229 m_bDropObjects, pFormResource); 1230 status.RenderSingleObject(pObj, &matrix); 1231 buffer.OutputToDevice(); 1232 } 1233 1234 bool CPDF_RenderStatus::ProcessForm(const CPDF_FormObject* pFormObj, 1235 const CFX_Matrix* pObj2Device) { 1236 #if defined _SKIA_SUPPORT_ 1237 DebugVerifyDeviceIsPreMultiplied(); 1238 #endif 1239 CPDF_Dictionary* pOC = pFormObj->m_pForm->m_pFormDict->GetDictFor("OC"); 1240 if (pOC && m_Options.m_pOCContext && 1241 !m_Options.m_pOCContext->CheckOCGVisible(pOC)) { 1242 return true; 1243 } 1244 CFX_Matrix matrix = pFormObj->m_FormMatrix; 1245 matrix.Concat(*pObj2Device); 1246 CPDF_Dictionary* pResources = nullptr; 1247 if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) { 1248 pResources = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources"); 1249 } 1250 CPDF_RenderStatus status; 1251 status.Initialize(m_pContext, m_pDevice, nullptr, m_pStopObj, this, pFormObj, 1252 &m_Options, m_Transparency, m_bDropObjects, pResources, 1253 false); 1254 status.m_curBlend = m_curBlend; 1255 m_pDevice->SaveState(); 1256 status.RenderObjectList(pFormObj->m_pForm.get(), &matrix); 1257 m_bStopped = status.m_bStopped; 1258 m_pDevice->RestoreState(false); 1259 #if defined _SKIA_SUPPORT_ 1260 DebugVerifyDeviceIsPreMultiplied(); 1261 #endif 1262 return true; 1263 } 1264 1265 bool CPDF_RenderStatus::ProcessPath(CPDF_PathObject* pPathObj, 1266 const CFX_Matrix* pObj2Device) { 1267 int FillType = pPathObj->m_FillType; 1268 bool bStroke = pPathObj->m_bStroke; 1269 ProcessPathPattern(pPathObj, pObj2Device, FillType, bStroke); 1270 if (FillType == 0 && !bStroke) 1271 return true; 1272 1273 uint32_t fill_argb = FillType ? GetFillArgb(pPathObj) : 0; 1274 uint32_t stroke_argb = bStroke ? GetStrokeArgb(pPathObj) : 0; 1275 CFX_Matrix path_matrix = pPathObj->m_Matrix; 1276 path_matrix.Concat(*pObj2Device); 1277 if (!IsAvailableMatrix(path_matrix)) 1278 return true; 1279 1280 if (FillType && (m_Options.m_Flags & RENDER_RECT_AA)) 1281 FillType |= FXFILL_RECT_AA; 1282 if (m_Options.m_Flags & RENDER_FILL_FULLCOVER) 1283 FillType |= FXFILL_FULLCOVER; 1284 if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) 1285 FillType |= FXFILL_NOPATHSMOOTH; 1286 if (bStroke) 1287 FillType |= FX_FILL_STROKE; 1288 1289 const CPDF_PageObject* pPageObj = 1290 static_cast<const CPDF_PageObject*>(pPathObj); 1291 if (pPageObj->m_GeneralState.GetStrokeAdjust()) 1292 FillType |= FX_STROKE_ADJUST; 1293 if (m_pType3Char) 1294 FillType |= FX_FILL_TEXT_MODE; 1295 1296 CFX_GraphState graphState = pPathObj->m_GraphState; 1297 if (m_Options.m_Flags & RENDER_THINLINE) 1298 graphState.SetLineWidth(0); 1299 return m_pDevice->DrawPathWithBlend( 1300 pPathObj->m_Path.GetObject(), &path_matrix, graphState.GetObject(), 1301 fill_argb, stroke_argb, FillType, m_curBlend); 1302 } 1303 1304 CPDF_TransferFunc* CPDF_RenderStatus::GetTransferFunc(CPDF_Object* pObj) const { 1305 ASSERT(pObj); 1306 CPDF_DocRenderData* pDocCache = m_pContext->GetDocument()->GetRenderData(); 1307 return pDocCache ? pDocCache->GetTransferFunc(pObj) : nullptr; 1308 } 1309 1310 FX_ARGB CPDF_RenderStatus::GetFillArgb(CPDF_PageObject* pObj, 1311 bool bType3) const { 1312 const CPDF_ColorState* pColorState = &pObj->m_ColorState; 1313 if (m_pType3Char && !bType3 && 1314 (!m_pType3Char->m_bColored || 1315 (m_pType3Char->m_bColored && 1316 (!*pColorState || pColorState->GetFillColor()->IsNull())))) { 1317 return m_T3FillColor; 1318 } 1319 if (!*pColorState || pColorState->GetFillColor()->IsNull()) 1320 pColorState = &m_InitialStates.m_ColorState; 1321 1322 FX_COLORREF rgb = pColorState->GetFillRGB(); 1323 if (rgb == (uint32_t)-1) 1324 return 0; 1325 1326 int32_t alpha = 1327 static_cast<int32_t>((pObj->m_GeneralState.GetFillAlpha() * 255)); 1328 if (pObj->m_GeneralState.GetTR()) { 1329 if (!pObj->m_GeneralState.GetTransferFunc()) { 1330 pObj->m_GeneralState.SetTransferFunc( 1331 GetTransferFunc(pObj->m_GeneralState.GetTR())); 1332 } 1333 if (pObj->m_GeneralState.GetTransferFunc()) 1334 rgb = pObj->m_GeneralState.GetTransferFunc()->TranslateColor(rgb); 1335 } 1336 return m_Options.TranslateColor(ArgbEncode(alpha, rgb)); 1337 } 1338 1339 FX_ARGB CPDF_RenderStatus::GetStrokeArgb(CPDF_PageObject* pObj) const { 1340 const CPDF_ColorState* pColorState = &pObj->m_ColorState; 1341 if (m_pType3Char && 1342 (!m_pType3Char->m_bColored || 1343 (m_pType3Char->m_bColored && 1344 (!*pColorState || pColorState->GetStrokeColor()->IsNull())))) { 1345 return m_T3FillColor; 1346 } 1347 if (!*pColorState || pColorState->GetStrokeColor()->IsNull()) 1348 pColorState = &m_InitialStates.m_ColorState; 1349 1350 FX_COLORREF rgb = pColorState->GetStrokeRGB(); 1351 if (rgb == (uint32_t)-1) 1352 return 0; 1353 1354 int32_t alpha = static_cast<int32_t>(pObj->m_GeneralState.GetStrokeAlpha() * 1355 255); // not rounded. 1356 if (pObj->m_GeneralState.GetTR()) { 1357 if (!pObj->m_GeneralState.GetTransferFunc()) { 1358 pObj->m_GeneralState.SetTransferFunc( 1359 GetTransferFunc(pObj->m_GeneralState.GetTR())); 1360 } 1361 if (pObj->m_GeneralState.GetTransferFunc()) 1362 rgb = pObj->m_GeneralState.GetTransferFunc()->TranslateColor(rgb); 1363 } 1364 return m_Options.TranslateColor(ArgbEncode(alpha, rgb)); 1365 } 1366 1367 void CPDF_RenderStatus::ProcessClipPath(CPDF_ClipPath ClipPath, 1368 const CFX_Matrix* pObj2Device) { 1369 if (!ClipPath) { 1370 if (m_LastClipPath) { 1371 m_pDevice->RestoreState(true); 1372 m_LastClipPath.SetNull(); 1373 } 1374 return; 1375 } 1376 if (m_LastClipPath == ClipPath) 1377 return; 1378 1379 m_LastClipPath = ClipPath; 1380 m_pDevice->RestoreState(true); 1381 int nClipPath = ClipPath.GetPathCount(); 1382 for (int i = 0; i < nClipPath; ++i) { 1383 const CFX_PathData* pPathData = ClipPath.GetPath(i).GetObject(); 1384 if (!pPathData) 1385 continue; 1386 1387 if (pPathData->GetPoints().empty()) { 1388 CFX_PathData EmptyPath; 1389 EmptyPath.AppendRect(-1, -1, 0, 0); 1390 int fill_mode = FXFILL_WINDING; 1391 m_pDevice->SetClip_PathFill(&EmptyPath, nullptr, fill_mode); 1392 } else { 1393 int ClipType = ClipPath.GetClipType(i); 1394 m_pDevice->SetClip_PathFill(pPathData, pObj2Device, ClipType); 1395 } 1396 } 1397 int textcount = ClipPath.GetTextCount(); 1398 if (textcount == 0) 1399 return; 1400 1401 if (m_pDevice->GetDeviceClass() == FXDC_DISPLAY && 1402 !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) { 1403 return; 1404 } 1405 1406 std::unique_ptr<CFX_PathData> pTextClippingPath; 1407 for (int i = 0; i < textcount; ++i) { 1408 CPDF_TextObject* pText = ClipPath.GetText(i); 1409 if (pText) { 1410 if (!pTextClippingPath) 1411 pTextClippingPath = pdfium::MakeUnique<CFX_PathData>(); 1412 ProcessText(pText, pObj2Device, pTextClippingPath.get()); 1413 continue; 1414 } 1415 1416 if (!pTextClippingPath) 1417 continue; 1418 1419 int fill_mode = FXFILL_WINDING; 1420 if (m_Options.m_Flags & RENDER_NOTEXTSMOOTH) 1421 fill_mode |= FXFILL_NOPATHSMOOTH; 1422 m_pDevice->SetClip_PathFill(pTextClippingPath.get(), nullptr, fill_mode); 1423 pTextClippingPath.reset(); 1424 } 1425 } 1426 1427 bool CPDF_RenderStatus::SelectClipPath(const CPDF_PathObject* pPathObj, 1428 const CFX_Matrix* pObj2Device, 1429 bool bStroke) { 1430 CFX_Matrix path_matrix = pPathObj->m_Matrix; 1431 path_matrix.Concat(*pObj2Device); 1432 if (bStroke) { 1433 CFX_GraphState graphState = pPathObj->m_GraphState; 1434 if (m_Options.m_Flags & RENDER_THINLINE) 1435 graphState.SetLineWidth(0); 1436 return m_pDevice->SetClip_PathStroke(pPathObj->m_Path.GetObject(), 1437 &path_matrix, graphState.GetObject()); 1438 } 1439 int fill_mode = pPathObj->m_FillType; 1440 if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) { 1441 fill_mode |= FXFILL_NOPATHSMOOTH; 1442 } 1443 return m_pDevice->SetClip_PathFill(pPathObj->m_Path.GetObject(), &path_matrix, 1444 fill_mode); 1445 } 1446 1447 bool CPDF_RenderStatus::ProcessTransparency(CPDF_PageObject* pPageObj, 1448 const CFX_Matrix* pObj2Device) { 1449 #if defined _SKIA_SUPPORT_ 1450 DebugVerifyDeviceIsPreMultiplied(); 1451 #endif 1452 int blend_type = pPageObj->m_GeneralState.GetBlendType(); 1453 if (blend_type == FXDIB_BLEND_UNSUPPORTED) 1454 return true; 1455 1456 CPDF_Dictionary* pSMaskDict = 1457 ToDictionary(pPageObj->m_GeneralState.GetSoftMask()); 1458 if (pSMaskDict) { 1459 if (pPageObj->IsImage() && 1460 pPageObj->AsImage()->GetImage()->GetDict()->KeyExist("SMask")) { 1461 pSMaskDict = nullptr; 1462 } 1463 } 1464 CPDF_Dictionary* pFormResource = nullptr; 1465 FX_FLOAT group_alpha = 1.0f; 1466 int Transparency = m_Transparency; 1467 bool bGroupTransparent = false; 1468 if (pPageObj->IsForm()) { 1469 const CPDF_FormObject* pFormObj = pPageObj->AsForm(); 1470 group_alpha = pFormObj->m_GeneralState.GetFillAlpha(); 1471 Transparency = pFormObj->m_pForm->m_Transparency; 1472 bGroupTransparent = !!(Transparency & PDFTRANS_ISOLATED); 1473 if (pFormObj->m_pForm->m_pFormDict) { 1474 pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources"); 1475 } 1476 } 1477 bool bTextClip = 1478 (pPageObj->m_ClipPath && pPageObj->m_ClipPath.GetTextCount() && 1479 m_pDevice->GetDeviceClass() == FXDC_DISPLAY && 1480 !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)); 1481 if ((m_Options.m_Flags & RENDER_OVERPRINT) && pPageObj->IsImage() && 1482 pPageObj->m_GeneralState.GetFillOP() && 1483 pPageObj->m_GeneralState.GetStrokeOP()) { 1484 CPDF_Document* pDocument = nullptr; 1485 CPDF_Page* pPage = nullptr; 1486 if (m_pContext->GetPageCache()) { 1487 pPage = m_pContext->GetPageCache()->GetPage(); 1488 pDocument = pPage->m_pDocument; 1489 } else { 1490 pDocument = pPageObj->AsImage()->GetImage()->GetDocument(); 1491 } 1492 CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : nullptr; 1493 CPDF_Object* pCSObj = pPageObj->AsImage() 1494 ->GetImage() 1495 ->GetStream() 1496 ->GetDict() 1497 ->GetDirectObjectFor("ColorSpace"); 1498 CPDF_ColorSpace* pColorSpace = 1499 pDocument->LoadColorSpace(pCSObj, pPageResources); 1500 if (pColorSpace) { 1501 int format = pColorSpace->GetFamily(); 1502 if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION || 1503 format == PDFCS_DEVICEN) { 1504 blend_type = FXDIB_BLEND_DARKEN; 1505 } 1506 pDocument->GetPageData()->ReleaseColorSpace(pCSObj); 1507 } 1508 } 1509 if (!pSMaskDict && group_alpha == 1.0f && blend_type == FXDIB_BLEND_NORMAL && 1510 !bTextClip && !bGroupTransparent) { 1511 return false; 1512 } 1513 bool isolated = !!(Transparency & PDFTRANS_ISOLATED); 1514 if (m_bPrint) { 1515 bool bRet = false; 1516 int rendCaps = m_pDevice->GetRenderCaps(); 1517 if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) && 1518 (rendCaps & FXRC_BLEND_MODE)) { 1519 int oldBlend = m_curBlend; 1520 m_curBlend = blend_type; 1521 bRet = DrawObjWithBlend(pPageObj, pObj2Device); 1522 m_curBlend = oldBlend; 1523 } 1524 if (!bRet) { 1525 DrawObjWithBackground(pPageObj, pObj2Device); 1526 } 1527 return true; 1528 } 1529 FX_RECT rect = pPageObj->GetBBox(pObj2Device); 1530 rect.Intersect(m_pDevice->GetClipBox()); 1531 if (rect.IsEmpty()) { 1532 return true; 1533 } 1534 CFX_Matrix deviceCTM = m_pDevice->GetCTM(); 1535 FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a); 1536 FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d); 1537 int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX); 1538 int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY); 1539 CFX_FxgeDevice bitmap_device; 1540 std::unique_ptr<CFX_DIBitmap> oriDevice; 1541 if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) { 1542 oriDevice = pdfium::MakeUnique<CFX_DIBitmap>(); 1543 if (!m_pDevice->CreateCompatibleBitmap(oriDevice.get(), width, height)) 1544 return true; 1545 m_pDevice->GetDIBits(oriDevice.get(), rect.left, rect.top); 1546 } 1547 if (!bitmap_device.Create(width, height, FXDIB_Argb, oriDevice.get())) 1548 return true; 1549 CFX_DIBitmap* bitmap = bitmap_device.GetBitmap(); 1550 bitmap->Clear(0); 1551 CFX_Matrix new_matrix = *pObj2Device; 1552 new_matrix.Translate(-rect.left, -rect.top); 1553 new_matrix.Scale(scaleX, scaleY); 1554 std::unique_ptr<CFX_DIBitmap> pTextMask; 1555 if (bTextClip) { 1556 pTextMask = pdfium::MakeUnique<CFX_DIBitmap>(); 1557 if (!pTextMask->Create(width, height, FXDIB_8bppMask)) 1558 return true; 1559 1560 pTextMask->Clear(0); 1561 CFX_FxgeDevice text_device; 1562 text_device.Attach(pTextMask.get(), false, nullptr, false); 1563 for (uint32_t i = 0; i < pPageObj->m_ClipPath.GetTextCount(); i++) { 1564 CPDF_TextObject* textobj = pPageObj->m_ClipPath.GetText(i); 1565 if (!textobj) 1566 break; 1567 1568 CFX_Matrix text_matrix = textobj->GetTextMatrix(); 1569 CPDF_TextRenderer::DrawTextPath( 1570 &text_device, textobj->m_CharCodes, textobj->m_CharPos, 1571 textobj->m_TextState.GetFont(), textobj->m_TextState.GetFontSize(), 1572 &text_matrix, &new_matrix, textobj->m_GraphState.GetObject(), 1573 (FX_ARGB)-1, 0, nullptr, 0); 1574 } 1575 } 1576 CPDF_RenderStatus bitmap_render; 1577 bitmap_render.Initialize(m_pContext, &bitmap_device, nullptr, m_pStopObj, 1578 nullptr, nullptr, &m_Options, 0, m_bDropObjects, 1579 pFormResource, true); 1580 bitmap_render.ProcessObjectNoClip(pPageObj, &new_matrix); 1581 #if defined _SKIA_SUPPORT_PATHS_ 1582 bitmap_device.Flush(); 1583 bitmap->UnPreMultiply(); 1584 #endif 1585 m_bStopped = bitmap_render.m_bStopped; 1586 if (pSMaskDict) { 1587 CFX_Matrix smask_matrix = *pPageObj->m_GeneralState.GetSMaskMatrix(); 1588 smask_matrix.Concat(*pObj2Device); 1589 std::unique_ptr<CFX_DIBSource> pSMaskSource = 1590 LoadSMask(pSMaskDict, &rect, &smask_matrix); 1591 if (pSMaskSource) 1592 bitmap->MultiplyAlpha(pSMaskSource.get()); 1593 } 1594 if (pTextMask) { 1595 bitmap->MultiplyAlpha(pTextMask.get()); 1596 pTextMask.reset(); 1597 } 1598 int32_t blitAlpha = 255; 1599 if (Transparency & PDFTRANS_GROUP && group_alpha != 1.0f) { 1600 blitAlpha = (int32_t)(group_alpha * 255); 1601 #ifndef _SKIA_SUPPORT_ 1602 bitmap->MultiplyAlpha(blitAlpha); 1603 blitAlpha = 255; 1604 #endif 1605 } 1606 Transparency = m_Transparency; 1607 if (pPageObj->IsForm()) { 1608 Transparency |= PDFTRANS_GROUP; 1609 } 1610 CompositeDIBitmap(bitmap, rect.left, rect.top, 0, blitAlpha, blend_type, 1611 Transparency); 1612 #if defined _SKIA_SUPPORT_ 1613 DebugVerifyDeviceIsPreMultiplied(); 1614 #endif 1615 return true; 1616 } 1617 1618 std::unique_ptr<CFX_DIBitmap> CPDF_RenderStatus::GetBackdrop( 1619 const CPDF_PageObject* pObj, 1620 const FX_RECT& rect, 1621 int& left, 1622 int& top, 1623 bool bBackAlphaRequired) { 1624 FX_RECT bbox = rect; 1625 bbox.Intersect(m_pDevice->GetClipBox()); 1626 left = bbox.left; 1627 top = bbox.top; 1628 CFX_Matrix deviceCTM = m_pDevice->GetCTM(); 1629 FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a); 1630 FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d); 1631 int width = FXSYS_round(bbox.Width() * scaleX); 1632 int height = FXSYS_round(bbox.Height() * scaleY); 1633 auto pBackdrop = pdfium::MakeUnique<CFX_DIBitmap>(); 1634 if (bBackAlphaRequired && !m_bDropObjects) 1635 pBackdrop->Create(width, height, FXDIB_Argb); 1636 else 1637 m_pDevice->CreateCompatibleBitmap(pBackdrop.get(), width, height); 1638 1639 if (!pBackdrop->GetBuffer()) 1640 return nullptr; 1641 1642 bool bNeedDraw; 1643 if (pBackdrop->HasAlpha()) 1644 bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT); 1645 else 1646 bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_GET_BITS); 1647 1648 if (!bNeedDraw) { 1649 m_pDevice->GetDIBits(pBackdrop.get(), left, top); 1650 return pBackdrop; 1651 } 1652 1653 CFX_Matrix FinalMatrix = m_DeviceMatrix; 1654 FinalMatrix.Translate(-left, -top); 1655 FinalMatrix.Scale(scaleX, scaleY); 1656 pBackdrop->Clear(pBackdrop->HasAlpha() ? 0 : 0xffffffff); 1657 CFX_FxgeDevice device; 1658 device.Attach(pBackdrop.get(), false, nullptr, false); 1659 m_pContext->Render(&device, pObj, &m_Options, &FinalMatrix); 1660 return pBackdrop; 1661 } 1662 1663 CPDF_GraphicStates* CPDF_RenderStatus::CloneObjStates( 1664 const CPDF_GraphicStates* pSrcStates, 1665 bool bStroke) { 1666 if (!pSrcStates) 1667 return nullptr; 1668 1669 CPDF_GraphicStates* pStates = new CPDF_GraphicStates; 1670 pStates->CopyStates(*pSrcStates); 1671 const CPDF_Color* pObjColor = bStroke 1672 ? pSrcStates->m_ColorState.GetStrokeColor() 1673 : pSrcStates->m_ColorState.GetFillColor(); 1674 if (!pObjColor->IsNull()) { 1675 pStates->m_ColorState.SetFillRGB( 1676 bStroke ? pSrcStates->m_ColorState.GetStrokeRGB() 1677 : pSrcStates->m_ColorState.GetFillRGB()); 1678 pStates->m_ColorState.SetStrokeRGB(pStates->m_ColorState.GetFillRGB()); 1679 } 1680 return pStates; 1681 } 1682 1683 #if defined _SKIA_SUPPORT_ 1684 void CPDF_RenderStatus::DebugVerifyDeviceIsPreMultiplied() const { 1685 m_pDevice->DebugVerifyBitmapIsPreMultiplied(); 1686 } 1687 #endif 1688 1689 bool CPDF_RenderStatus::ProcessText(CPDF_TextObject* textobj, 1690 const CFX_Matrix* pObj2Device, 1691 CFX_PathData* pClippingPath) { 1692 if (textobj->m_CharCodes.empty()) 1693 return true; 1694 1695 const TextRenderingMode text_render_mode = textobj->m_TextState.GetTextMode(); 1696 if (text_render_mode == TextRenderingMode::MODE_INVISIBLE) 1697 return true; 1698 1699 CPDF_Font* pFont = textobj->m_TextState.GetFont(); 1700 if (pFont->IsType3Font()) 1701 return ProcessType3Text(textobj, pObj2Device); 1702 1703 bool bFill = false; 1704 bool bStroke = false; 1705 bool bClip = false; 1706 if (pClippingPath) { 1707 bClip = true; 1708 } else { 1709 switch (text_render_mode) { 1710 case TextRenderingMode::MODE_FILL: 1711 case TextRenderingMode::MODE_FILL_CLIP: 1712 bFill = true; 1713 break; 1714 case TextRenderingMode::MODE_STROKE: 1715 case TextRenderingMode::MODE_STROKE_CLIP: 1716 if (pFont->GetFace()) 1717 bStroke = true; 1718 else 1719 bFill = true; 1720 break; 1721 case TextRenderingMode::MODE_FILL_STROKE: 1722 case TextRenderingMode::MODE_FILL_STROKE_CLIP: 1723 bFill = true; 1724 if (pFont->GetFace()) 1725 bStroke = true; 1726 break; 1727 case TextRenderingMode::MODE_INVISIBLE: 1728 // Already handled above, but the compiler is not smart enough to 1729 // realize it. Fall through. 1730 ASSERT(false); 1731 case TextRenderingMode::MODE_CLIP: 1732 return true; 1733 } 1734 } 1735 FX_ARGB stroke_argb = 0; 1736 FX_ARGB fill_argb = 0; 1737 bool bPattern = false; 1738 if (bStroke) { 1739 if (textobj->m_ColorState.GetStrokeColor()->IsPattern()) { 1740 bPattern = true; 1741 } else { 1742 stroke_argb = GetStrokeArgb(textobj); 1743 } 1744 } 1745 if (bFill) { 1746 if (textobj->m_ColorState.GetFillColor()->IsPattern()) { 1747 bPattern = true; 1748 } else { 1749 fill_argb = GetFillArgb(textobj); 1750 } 1751 } 1752 CFX_Matrix text_matrix = textobj->GetTextMatrix(); 1753 if (!IsAvailableMatrix(text_matrix)) 1754 return true; 1755 1756 FX_FLOAT font_size = textobj->m_TextState.GetFontSize(); 1757 if (bPattern) { 1758 DrawTextPathWithPattern(textobj, pObj2Device, pFont, font_size, 1759 &text_matrix, bFill, bStroke); 1760 return true; 1761 } 1762 if (bClip || bStroke) { 1763 const CFX_Matrix* pDeviceMatrix = pObj2Device; 1764 CFX_Matrix device_matrix; 1765 if (bStroke) { 1766 const FX_FLOAT* pCTM = textobj->m_TextState.GetCTM(); 1767 if (pCTM[0] != 1.0f || pCTM[3] != 1.0f) { 1768 CFX_Matrix ctm(pCTM[0], pCTM[1], pCTM[2], pCTM[3], 0, 0); 1769 text_matrix.ConcatInverse(ctm); 1770 device_matrix = ctm; 1771 device_matrix.Concat(*pObj2Device); 1772 pDeviceMatrix = &device_matrix; 1773 } 1774 } 1775 int flag = 0; 1776 if (bStroke && bFill) { 1777 flag |= FX_FILL_STROKE; 1778 flag |= FX_STROKE_TEXT_MODE; 1779 } 1780 if (textobj->m_GeneralState.GetStrokeAdjust()) 1781 flag |= FX_STROKE_ADJUST; 1782 if (m_Options.m_Flags & RENDER_NOTEXTSMOOTH) 1783 flag |= FXFILL_NOPATHSMOOTH; 1784 return CPDF_TextRenderer::DrawTextPath( 1785 m_pDevice, textobj->m_CharCodes, textobj->m_CharPos, pFont, font_size, 1786 &text_matrix, pDeviceMatrix, textobj->m_GraphState.GetObject(), 1787 fill_argb, stroke_argb, pClippingPath, flag); 1788 } 1789 text_matrix.Concat(*pObj2Device); 1790 return CPDF_TextRenderer::DrawNormalText(m_pDevice, textobj->m_CharCodes, 1791 textobj->m_CharPos, pFont, font_size, 1792 &text_matrix, fill_argb, &m_Options); 1793 } 1794 1795 CPDF_Type3Cache* CPDF_RenderStatus::GetCachedType3(CPDF_Type3Font* pFont) { 1796 if (!pFont->m_pDocument) { 1797 return nullptr; 1798 } 1799 pFont->m_pDocument->GetPageData()->GetFont(pFont->GetFontDict()); 1800 return pFont->m_pDocument->GetRenderData()->GetCachedType3(pFont); 1801 } 1802 1803 // TODO(npm): Font fallback for type 3 fonts? (Completely separate code!!) 1804 bool CPDF_RenderStatus::ProcessType3Text(CPDF_TextObject* textobj, 1805 const CFX_Matrix* pObj2Device) { 1806 CPDF_Type3Font* pType3Font = textobj->m_TextState.GetFont()->AsType3Font(); 1807 if (pdfium::ContainsValue(m_Type3FontCache, pType3Font)) 1808 return true; 1809 1810 CFX_Matrix dCTM = m_pDevice->GetCTM(); 1811 FX_FLOAT sa = FXSYS_fabs(dCTM.a); 1812 FX_FLOAT sd = FXSYS_fabs(dCTM.d); 1813 CFX_Matrix text_matrix = textobj->GetTextMatrix(); 1814 CFX_Matrix char_matrix = pType3Font->GetFontMatrix(); 1815 FX_FLOAT font_size = textobj->m_TextState.GetFontSize(); 1816 char_matrix.Scale(font_size, font_size); 1817 FX_ARGB fill_argb = GetFillArgb(textobj, true); 1818 int fill_alpha = FXARGB_A(fill_argb); 1819 int device_class = m_pDevice->GetDeviceClass(); 1820 std::vector<FXTEXT_GLYPHPOS> glyphs; 1821 if (device_class == FXDC_DISPLAY) 1822 glyphs.resize(textobj->m_CharCodes.size()); 1823 else if (fill_alpha < 255) 1824 return false; 1825 1826 CPDF_RefType3Cache refTypeCache(pType3Font); 1827 for (int iChar = 0; iChar < pdfium::CollectionSize<int>(textobj->m_CharCodes); 1828 iChar++) { 1829 uint32_t charcode = textobj->m_CharCodes[iChar]; 1830 if (charcode == static_cast<uint32_t>(-1)) 1831 continue; 1832 1833 CPDF_Type3Char* pType3Char = pType3Font->LoadChar(charcode); 1834 if (!pType3Char) 1835 continue; 1836 1837 CFX_Matrix matrix = char_matrix; 1838 matrix.e += iChar ? textobj->m_CharPos[iChar - 1] : 0; 1839 matrix.Concat(text_matrix); 1840 matrix.Concat(*pObj2Device); 1841 if (!pType3Char->LoadBitmap(m_pContext)) { 1842 if (!glyphs.empty()) { 1843 for (int i = 0; i < iChar; i++) { 1844 const FXTEXT_GLYPHPOS& glyph = glyphs[i]; 1845 if (!glyph.m_pGlyph) 1846 continue; 1847 1848 m_pDevice->SetBitMask(&glyph.m_pGlyph->m_Bitmap, 1849 glyph.m_Origin.x + glyph.m_pGlyph->m_Left, 1850 glyph.m_Origin.y - glyph.m_pGlyph->m_Top, 1851 fill_argb); 1852 } 1853 glyphs.clear(); 1854 } 1855 CPDF_GraphicStates* pStates = CloneObjStates(textobj, false); 1856 CPDF_RenderOptions Options = m_Options; 1857 Options.m_Flags |= RENDER_FORCE_HALFTONE | RENDER_RECT_AA; 1858 Options.m_Flags &= ~RENDER_FORCE_DOWNSAMPLE; 1859 CPDF_Dictionary* pFormResource = nullptr; 1860 if (pType3Char->m_pForm && pType3Char->m_pForm->m_pFormDict) { 1861 pFormResource = 1862 pType3Char->m_pForm->m_pFormDict->GetDictFor("Resources"); 1863 } 1864 if (fill_alpha == 255) { 1865 CPDF_RenderStatus status; 1866 status.Initialize(m_pContext, m_pDevice, nullptr, nullptr, this, 1867 pStates, &Options, 1868 pType3Char->m_pForm->m_Transparency, m_bDropObjects, 1869 pFormResource, false, pType3Char, fill_argb); 1870 status.m_Type3FontCache = m_Type3FontCache; 1871 status.m_Type3FontCache.push_back(pType3Font); 1872 m_pDevice->SaveState(); 1873 status.RenderObjectList(pType3Char->m_pForm.get(), &matrix); 1874 m_pDevice->RestoreState(false); 1875 } else { 1876 CFX_FloatRect rect_f = pType3Char->m_pForm->CalcBoundingBox(); 1877 matrix.TransformRect(rect_f); 1878 1879 FX_RECT rect = rect_f.GetOuterRect(); 1880 CFX_FxgeDevice bitmap_device; 1881 if (!bitmap_device.Create((int)(rect.Width() * sa), 1882 (int)(rect.Height() * sd), FXDIB_Argb, 1883 nullptr)) { 1884 return true; 1885 } 1886 bitmap_device.GetBitmap()->Clear(0); 1887 CPDF_RenderStatus status; 1888 status.Initialize(m_pContext, &bitmap_device, nullptr, nullptr, this, 1889 pStates, &Options, 1890 pType3Char->m_pForm->m_Transparency, m_bDropObjects, 1891 pFormResource, false, pType3Char, fill_argb); 1892 status.m_Type3FontCache = m_Type3FontCache; 1893 status.m_Type3FontCache.push_back(pType3Font); 1894 matrix.Translate(-rect.left, -rect.top); 1895 matrix.Scale(sa, sd); 1896 status.RenderObjectList(pType3Char->m_pForm.get(), &matrix); 1897 m_pDevice->SetDIBits(bitmap_device.GetBitmap(), rect.left, rect.top); 1898 } 1899 delete pStates; 1900 } else if (pType3Char->m_pBitmap) { 1901 if (device_class == FXDC_DISPLAY) { 1902 CPDF_Type3Cache* pCache = GetCachedType3(pType3Font); 1903 refTypeCache.m_dwCount++; 1904 CFX_GlyphBitmap* pBitmap = pCache->LoadGlyph(charcode, &matrix, sa, sd); 1905 if (!pBitmap) 1906 continue; 1907 1908 CFX_Point origin(FXSYS_round(matrix.e), FXSYS_round(matrix.f)); 1909 if (glyphs.empty()) { 1910 m_pDevice->SetBitMask(&pBitmap->m_Bitmap, origin.x + pBitmap->m_Left, 1911 origin.y - pBitmap->m_Top, fill_argb); 1912 } else { 1913 glyphs[iChar].m_pGlyph = pBitmap; 1914 glyphs[iChar].m_Origin = origin; 1915 } 1916 } else { 1917 CFX_Matrix image_matrix = pType3Char->m_ImageMatrix; 1918 image_matrix.Concat(matrix); 1919 CPDF_ImageRenderer renderer; 1920 if (renderer.Start(this, pType3Char->m_pBitmap.get(), fill_argb, 255, 1921 &image_matrix, 0, false, FXDIB_BLEND_NORMAL)) { 1922 renderer.Continue(nullptr); 1923 } 1924 if (!renderer.GetResult()) 1925 return false; 1926 } 1927 } 1928 } 1929 1930 if (glyphs.empty()) 1931 return true; 1932 1933 FX_RECT rect = FXGE_GetGlyphsBBox(glyphs, 0, sa, sd); 1934 CFX_DIBitmap bitmap; 1935 if (!bitmap.Create(static_cast<int>(rect.Width() * sa), 1936 static_cast<int>(rect.Height() * sd), FXDIB_8bppMask)) { 1937 return true; 1938 } 1939 bitmap.Clear(0); 1940 for (const FXTEXT_GLYPHPOS& glyph : glyphs) { 1941 if (!glyph.m_pGlyph) 1942 continue; 1943 1944 pdfium::base::CheckedNumeric<int> left = glyph.m_Origin.x; 1945 left += glyph.m_pGlyph->m_Left; 1946 left -= rect.left; 1947 left *= sa; 1948 if (!left.IsValid()) 1949 continue; 1950 1951 pdfium::base::CheckedNumeric<int> top = glyph.m_Origin.y; 1952 top -= glyph.m_pGlyph->m_Top; 1953 top -= rect.top; 1954 top *= sd; 1955 if (!top.IsValid()) 1956 continue; 1957 1958 bitmap.CompositeMask(left.ValueOrDie(), top.ValueOrDie(), 1959 glyph.m_pGlyph->m_Bitmap.GetWidth(), 1960 glyph.m_pGlyph->m_Bitmap.GetHeight(), 1961 &glyph.m_pGlyph->m_Bitmap, fill_argb, 0, 0, 1962 FXDIB_BLEND_NORMAL, nullptr, false, 0, nullptr); 1963 } 1964 m_pDevice->SetBitMask(&bitmap, rect.left, rect.top, fill_argb); 1965 return true; 1966 } 1967 1968 void CPDF_RenderStatus::DrawTextPathWithPattern(const CPDF_TextObject* textobj, 1969 const CFX_Matrix* pObj2Device, 1970 CPDF_Font* pFont, 1971 FX_FLOAT font_size, 1972 const CFX_Matrix* pTextMatrix, 1973 bool bFill, 1974 bool bStroke) { 1975 if (!bStroke) { 1976 CPDF_PathObject path; 1977 std::vector<std::unique_ptr<CPDF_TextObject>> pCopy; 1978 pCopy.push_back(std::unique_ptr<CPDF_TextObject>(textobj->Clone())); 1979 path.m_bStroke = false; 1980 path.m_FillType = FXFILL_WINDING; 1981 path.m_ClipPath.AppendTexts(&pCopy); 1982 path.m_ColorState = textobj->m_ColorState; 1983 path.m_Path.AppendRect(textobj->m_Left, textobj->m_Bottom, textobj->m_Right, 1984 textobj->m_Top); 1985 path.m_Left = textobj->m_Left; 1986 path.m_Bottom = textobj->m_Bottom; 1987 path.m_Right = textobj->m_Right; 1988 path.m_Top = textobj->m_Top; 1989 RenderSingleObject(&path, pObj2Device); 1990 return; 1991 } 1992 CPDF_CharPosList CharPosList; 1993 CharPosList.Load(textobj->m_CharCodes, textobj->m_CharPos, pFont, font_size); 1994 for (uint32_t i = 0; i < CharPosList.m_nChars; i++) { 1995 FXTEXT_CHARPOS& charpos = CharPosList.m_pCharPos[i]; 1996 auto font = 1997 charpos.m_FallbackFontPosition == -1 1998 ? &pFont->m_Font 1999 : pFont->m_FontFallbacks[charpos.m_FallbackFontPosition].get(); 2000 const CFX_PathData* pPath = 2001 font->LoadGlyphPath(charpos.m_GlyphIndex, charpos.m_FontCharWidth); 2002 if (!pPath) 2003 continue; 2004 2005 CPDF_PathObject path; 2006 path.m_GraphState = textobj->m_GraphState; 2007 path.m_ColorState = textobj->m_ColorState; 2008 2009 CFX_Matrix matrix; 2010 if (charpos.m_bGlyphAdjust) { 2011 matrix = CFX_Matrix(charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1], 2012 charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3], 2013 0, 0); 2014 } 2015 matrix.Concat(CFX_Matrix(font_size, 0, 0, font_size, charpos.m_Origin.x, 2016 charpos.m_Origin.y)); 2017 path.m_Path.Append(pPath, &matrix); 2018 path.m_Matrix = *pTextMatrix; 2019 path.m_bStroke = bStroke; 2020 path.m_FillType = bFill ? FXFILL_WINDING : 0; 2021 path.CalcBoundingBox(); 2022 ProcessPath(&path, pObj2Device); 2023 } 2024 } 2025 2026 void CPDF_RenderStatus::DrawShading(CPDF_ShadingPattern* pPattern, 2027 CFX_Matrix* pMatrix, 2028 FX_RECT& clip_rect, 2029 int alpha, 2030 bool bAlphaMode) { 2031 const auto& funcs = pPattern->GetFuncs(); 2032 CPDF_Dictionary* pDict = pPattern->GetShadingObject()->GetDict(); 2033 CPDF_ColorSpace* pColorSpace = pPattern->GetCS(); 2034 if (!pColorSpace) 2035 return; 2036 2037 FX_ARGB background = 0; 2038 if (!pPattern->IsShadingObject() && pDict->KeyExist("Background")) { 2039 CPDF_Array* pBackColor = pDict->GetArrayFor("Background"); 2040 if (pBackColor && 2041 pBackColor->GetCount() >= pColorSpace->CountComponents()) { 2042 CFX_FixedBufGrow<FX_FLOAT, 16> comps(pColorSpace->CountComponents()); 2043 for (uint32_t i = 0; i < pColorSpace->CountComponents(); i++) 2044 comps[i] = pBackColor->GetNumberAt(i); 2045 FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; 2046 pColorSpace->GetRGB(comps, R, G, B); 2047 background = ArgbEncode(255, (int32_t)(R * 255), (int32_t)(G * 255), 2048 (int32_t)(B * 255)); 2049 } 2050 } 2051 if (pDict->KeyExist("BBox")) { 2052 CFX_FloatRect rect = pDict->GetRectFor("BBox"); 2053 pMatrix->TransformRect(rect); 2054 clip_rect.Intersect(rect.GetOuterRect()); 2055 } 2056 if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SHADING && 2057 m_pDevice->GetDeviceDriver()->DrawShading(pPattern, pMatrix, clip_rect, 2058 alpha, bAlphaMode)) { 2059 return; 2060 } 2061 CPDF_DeviceBuffer buffer; 2062 buffer.Initialize(m_pContext, m_pDevice, &clip_rect, m_pCurObj, 150); 2063 CFX_Matrix FinalMatrix = *pMatrix; 2064 FinalMatrix.Concat(*buffer.GetMatrix()); 2065 CFX_DIBitmap* pBitmap = buffer.GetBitmap(); 2066 if (!pBitmap->GetBuffer()) 2067 return; 2068 2069 pBitmap->Clear(background); 2070 int fill_mode = m_Options.m_Flags; 2071 switch (pPattern->GetShadingType()) { 2072 case kInvalidShading: 2073 case kMaxShading: 2074 return; 2075 case kFunctionBasedShading: 2076 DrawFuncShading(pBitmap, &FinalMatrix, pDict, funcs, pColorSpace, alpha); 2077 break; 2078 case kAxialShading: 2079 DrawAxialShading(pBitmap, &FinalMatrix, pDict, funcs, pColorSpace, alpha); 2080 break; 2081 case kRadialShading: 2082 DrawRadialShading(pBitmap, &FinalMatrix, pDict, funcs, pColorSpace, 2083 alpha); 2084 break; 2085 case kFreeFormGouraudTriangleMeshShading: { 2086 // The shading object can be a stream or a dictionary. We do not handle 2087 // the case of dictionary at the moment. 2088 if (CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) { 2089 DrawFreeGouraudShading(pBitmap, &FinalMatrix, pStream, funcs, 2090 pColorSpace, alpha); 2091 } 2092 } break; 2093 case kLatticeFormGouraudTriangleMeshShading: { 2094 // The shading object can be a stream or a dictionary. We do not handle 2095 // the case of dictionary at the moment. 2096 if (CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) { 2097 DrawLatticeGouraudShading(pBitmap, &FinalMatrix, pStream, funcs, 2098 pColorSpace, alpha); 2099 } 2100 } break; 2101 case kCoonsPatchMeshShading: 2102 case kTensorProductPatchMeshShading: { 2103 // The shading object can be a stream or a dictionary. We do not handle 2104 // the case of dictionary at the moment. 2105 if (CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) { 2106 DrawCoonPatchMeshes(pPattern->GetShadingType(), pBitmap, &FinalMatrix, 2107 pStream, funcs, pColorSpace, fill_mode, alpha); 2108 } 2109 } break; 2110 } 2111 if (bAlphaMode) 2112 pBitmap->LoadChannel(FXDIB_Red, pBitmap, FXDIB_Alpha); 2113 2114 if (m_Options.m_ColorMode == RENDER_COLOR_GRAY) 2115 pBitmap->ConvertColorScale(m_Options.m_ForeColor, m_Options.m_BackColor); 2116 buffer.OutputToDevice(); 2117 } 2118 2119 void CPDF_RenderStatus::DrawShadingPattern(CPDF_ShadingPattern* pattern, 2120 const CPDF_PageObject* pPageObj, 2121 const CFX_Matrix* pObj2Device, 2122 bool bStroke) { 2123 if (!pattern->Load()) 2124 return; 2125 2126 m_pDevice->SaveState(); 2127 if (pPageObj->IsPath()) { 2128 if (!SelectClipPath(pPageObj->AsPath(), pObj2Device, bStroke)) { 2129 m_pDevice->RestoreState(false); 2130 return; 2131 } 2132 } else if (pPageObj->IsImage()) { 2133 m_pDevice->SetClip_Rect(pPageObj->GetBBox(pObj2Device)); 2134 } else { 2135 return; 2136 } 2137 FX_RECT rect; 2138 if (GetObjectClippedRect(pPageObj, pObj2Device, false, rect)) { 2139 m_pDevice->RestoreState(false); 2140 return; 2141 } 2142 CFX_Matrix matrix = *pattern->pattern_to_form(); 2143 matrix.Concat(*pObj2Device); 2144 GetScaledMatrix(matrix); 2145 int alpha = 2146 FXSYS_round(255 * (bStroke ? pPageObj->m_GeneralState.GetStrokeAlpha() 2147 : pPageObj->m_GeneralState.GetFillAlpha())); 2148 DrawShading(pattern, &matrix, rect, alpha, 2149 m_Options.m_ColorMode == RENDER_COLOR_ALPHA); 2150 m_pDevice->RestoreState(false); 2151 } 2152 2153 void CPDF_RenderStatus::ProcessShading(const CPDF_ShadingObject* pShadingObj, 2154 const CFX_Matrix* pObj2Device) { 2155 FX_RECT rect = pShadingObj->GetBBox(pObj2Device); 2156 FX_RECT clip_box = m_pDevice->GetClipBox(); 2157 rect.Intersect(clip_box); 2158 if (rect.IsEmpty()) 2159 return; 2160 2161 CFX_Matrix matrix = pShadingObj->m_Matrix; 2162 matrix.Concat(*pObj2Device); 2163 DrawShading(pShadingObj->m_pShading, &matrix, rect, 2164 FXSYS_round(255 * pShadingObj->m_GeneralState.GetFillAlpha()), 2165 m_Options.m_ColorMode == RENDER_COLOR_ALPHA); 2166 } 2167 2168 void CPDF_RenderStatus::DrawTilingPattern(CPDF_TilingPattern* pPattern, 2169 CPDF_PageObject* pPageObj, 2170 const CFX_Matrix* pObj2Device, 2171 bool bStroke) { 2172 if (!pPattern->Load()) { 2173 return; 2174 } 2175 m_pDevice->SaveState(); 2176 if (pPageObj->IsPath()) { 2177 if (!SelectClipPath(pPageObj->AsPath(), pObj2Device, bStroke)) { 2178 m_pDevice->RestoreState(false); 2179 return; 2180 } 2181 } else if (pPageObj->IsImage()) { 2182 m_pDevice->SetClip_Rect(pPageObj->GetBBox(pObj2Device)); 2183 } else { 2184 return; 2185 } 2186 FX_RECT clip_box = m_pDevice->GetClipBox(); 2187 if (clip_box.IsEmpty()) { 2188 m_pDevice->RestoreState(false); 2189 return; 2190 } 2191 CFX_Matrix dCTM = m_pDevice->GetCTM(); 2192 FX_FLOAT sa = FXSYS_fabs(dCTM.a); 2193 FX_FLOAT sd = FXSYS_fabs(dCTM.d); 2194 clip_box.right = clip_box.left + (int32_t)FXSYS_ceil(clip_box.Width() * sa); 2195 clip_box.bottom = clip_box.top + (int32_t)FXSYS_ceil(clip_box.Height() * sd); 2196 CFX_Matrix mtPattern2Device = *pPattern->pattern_to_form(); 2197 mtPattern2Device.Concat(*pObj2Device); 2198 GetScaledMatrix(mtPattern2Device); 2199 bool bAligned = false; 2200 if (pPattern->bbox().left == 0 && pPattern->bbox().bottom == 0 && 2201 pPattern->bbox().right == pPattern->x_step() && 2202 pPattern->bbox().top == pPattern->y_step() && 2203 (mtPattern2Device.IsScaled() || mtPattern2Device.Is90Rotated())) { 2204 bAligned = true; 2205 } 2206 CFX_FloatRect cell_bbox = pPattern->bbox(); 2207 mtPattern2Device.TransformRect(cell_bbox); 2208 int width = (int)FXSYS_ceil(cell_bbox.Width()); 2209 int height = (int)FXSYS_ceil(cell_bbox.Height()); 2210 if (width == 0) { 2211 width = 1; 2212 } 2213 if (height == 0) { 2214 height = 1; 2215 } 2216 int min_col, max_col, min_row, max_row; 2217 CFX_Matrix mtDevice2Pattern; 2218 mtDevice2Pattern.SetReverse(mtPattern2Device); 2219 2220 CFX_FloatRect clip_box_p(clip_box); 2221 mtDevice2Pattern.TransformRect(clip_box_p); 2222 2223 min_col = (int)FXSYS_ceil((clip_box_p.left - pPattern->bbox().right) / 2224 pPattern->x_step()); 2225 max_col = (int)FXSYS_floor((clip_box_p.right - pPattern->bbox().left) / 2226 pPattern->x_step()); 2227 min_row = (int)FXSYS_ceil((clip_box_p.bottom - pPattern->bbox().top) / 2228 pPattern->y_step()); 2229 max_row = (int)FXSYS_floor((clip_box_p.top - pPattern->bbox().bottom) / 2230 pPattern->y_step()); 2231 2232 if (width > clip_box.Width() || height > clip_box.Height() || 2233 width * height > clip_box.Width() * clip_box.Height()) { 2234 CPDF_GraphicStates* pStates = nullptr; 2235 if (!pPattern->colored()) 2236 pStates = CloneObjStates(pPageObj, bStroke); 2237 2238 CPDF_Dictionary* pFormResource = nullptr; 2239 if (pPattern->form()->m_pFormDict) 2240 pFormResource = pPattern->form()->m_pFormDict->GetDictFor("Resources"); 2241 2242 for (int col = min_col; col <= max_col; col++) 2243 for (int row = min_row; row <= max_row; row++) { 2244 CFX_PointF original = mtPattern2Device.Transform( 2245 CFX_PointF(col * pPattern->x_step(), row * pPattern->y_step())); 2246 CFX_Matrix matrix = *pObj2Device; 2247 matrix.Translate(original.x - mtPattern2Device.e, 2248 original.y - mtPattern2Device.f); 2249 m_pDevice->SaveState(); 2250 CPDF_RenderStatus status; 2251 status.Initialize(m_pContext, m_pDevice, nullptr, nullptr, this, 2252 pStates, &m_Options, pPattern->form()->m_Transparency, 2253 m_bDropObjects, pFormResource); 2254 status.RenderObjectList(pPattern->form(), &matrix); 2255 m_pDevice->RestoreState(false); 2256 } 2257 m_pDevice->RestoreState(false); 2258 delete pStates; 2259 return; 2260 } 2261 if (bAligned) { 2262 int orig_x = FXSYS_round(mtPattern2Device.e); 2263 int orig_y = FXSYS_round(mtPattern2Device.f); 2264 min_col = (clip_box.left - orig_x) / width; 2265 if (clip_box.left < orig_x) { 2266 min_col--; 2267 } 2268 max_col = (clip_box.right - orig_x) / width; 2269 if (clip_box.right <= orig_x) { 2270 max_col--; 2271 } 2272 min_row = (clip_box.top - orig_y) / height; 2273 if (clip_box.top < orig_y) { 2274 min_row--; 2275 } 2276 max_row = (clip_box.bottom - orig_y) / height; 2277 if (clip_box.bottom <= orig_y) { 2278 max_row--; 2279 } 2280 } 2281 FX_FLOAT left_offset = cell_bbox.left - mtPattern2Device.e; 2282 FX_FLOAT top_offset = cell_bbox.bottom - mtPattern2Device.f; 2283 std::unique_ptr<CFX_DIBitmap> pPatternBitmap; 2284 if (width * height < 16) { 2285 std::unique_ptr<CFX_DIBitmap> pEnlargedBitmap = 2286 DrawPatternBitmap(m_pContext->GetDocument(), m_pContext->GetPageCache(), 2287 pPattern, pObj2Device, 8, 8, m_Options.m_Flags); 2288 pPatternBitmap = pEnlargedBitmap->StretchTo(width, height); 2289 } else { 2290 pPatternBitmap = DrawPatternBitmap( 2291 m_pContext->GetDocument(), m_pContext->GetPageCache(), pPattern, 2292 pObj2Device, width, height, m_Options.m_Flags); 2293 } 2294 if (!pPatternBitmap) { 2295 m_pDevice->RestoreState(false); 2296 return; 2297 } 2298 if (m_Options.m_ColorMode == RENDER_COLOR_GRAY) { 2299 pPatternBitmap->ConvertColorScale(m_Options.m_ForeColor, 2300 m_Options.m_BackColor); 2301 } 2302 FX_ARGB fill_argb = GetFillArgb(pPageObj); 2303 int clip_width = clip_box.right - clip_box.left; 2304 int clip_height = clip_box.bottom - clip_box.top; 2305 CFX_DIBitmap screen; 2306 if (!screen.Create(clip_width, clip_height, FXDIB_Argb)) { 2307 return; 2308 } 2309 screen.Clear(0); 2310 uint32_t* src_buf = (uint32_t*)pPatternBitmap->GetBuffer(); 2311 for (int col = min_col; col <= max_col; col++) { 2312 for (int row = min_row; row <= max_row; row++) { 2313 int start_x, start_y; 2314 if (bAligned) { 2315 start_x = FXSYS_round(mtPattern2Device.e) + col * width - clip_box.left; 2316 start_y = FXSYS_round(mtPattern2Device.f) + row * height - clip_box.top; 2317 } else { 2318 CFX_PointF original = mtPattern2Device.Transform( 2319 CFX_PointF(col * pPattern->x_step(), row * pPattern->y_step())); 2320 2321 pdfium::base::CheckedNumeric<int> safeStartX = 2322 FXSYS_round(original.x + left_offset); 2323 pdfium::base::CheckedNumeric<int> safeStartY = 2324 FXSYS_round(original.y + top_offset); 2325 2326 safeStartX -= clip_box.left; 2327 safeStartY -= clip_box.top; 2328 if (!safeStartX.IsValid() || !safeStartY.IsValid()) 2329 return; 2330 2331 start_x = safeStartX.ValueOrDie(); 2332 start_y = safeStartY.ValueOrDie(); 2333 } 2334 if (width == 1 && height == 1) { 2335 if (start_x < 0 || start_x >= clip_box.Width() || start_y < 0 || 2336 start_y >= clip_box.Height()) { 2337 continue; 2338 } 2339 uint32_t* dest_buf = 2340 (uint32_t*)(screen.GetBuffer() + screen.GetPitch() * start_y + 2341 start_x * 4); 2342 if (pPattern->colored()) 2343 *dest_buf = *src_buf; 2344 else 2345 *dest_buf = (*(uint8_t*)src_buf << 24) | (fill_argb & 0xffffff); 2346 } else { 2347 if (pPattern->colored()) { 2348 screen.CompositeBitmap(start_x, start_y, width, height, 2349 pPatternBitmap.get(), 0, 0); 2350 } else { 2351 screen.CompositeMask(start_x, start_y, width, height, 2352 pPatternBitmap.get(), fill_argb, 0, 0); 2353 } 2354 } 2355 } 2356 } 2357 CompositeDIBitmap(&screen, clip_box.left, clip_box.top, 0, 255, 2358 FXDIB_BLEND_NORMAL, false); 2359 m_pDevice->RestoreState(false); 2360 } 2361 2362 void CPDF_RenderStatus::DrawPathWithPattern(CPDF_PathObject* pPathObj, 2363 const CFX_Matrix* pObj2Device, 2364 const CPDF_Color* pColor, 2365 bool bStroke) { 2366 CPDF_Pattern* pattern = pColor->GetPattern(); 2367 if (!pattern) 2368 return; 2369 2370 if (CPDF_TilingPattern* pTilingPattern = pattern->AsTilingPattern()) 2371 DrawTilingPattern(pTilingPattern, pPathObj, pObj2Device, bStroke); 2372 else if (CPDF_ShadingPattern* pShadingPattern = pattern->AsShadingPattern()) 2373 DrawShadingPattern(pShadingPattern, pPathObj, pObj2Device, bStroke); 2374 } 2375 2376 void CPDF_RenderStatus::ProcessPathPattern(CPDF_PathObject* pPathObj, 2377 const CFX_Matrix* pObj2Device, 2378 int& filltype, 2379 bool& bStroke) { 2380 if (filltype) { 2381 const CPDF_Color& FillColor = *pPathObj->m_ColorState.GetFillColor(); 2382 if (FillColor.IsPattern()) { 2383 DrawPathWithPattern(pPathObj, pObj2Device, &FillColor, false); 2384 filltype = 0; 2385 } 2386 } 2387 if (bStroke) { 2388 const CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor(); 2389 if (StrokeColor.IsPattern()) { 2390 DrawPathWithPattern(pPathObj, pObj2Device, &StrokeColor, true); 2391 bStroke = false; 2392 } 2393 } 2394 } 2395 2396 bool CPDF_RenderStatus::ProcessImage(CPDF_ImageObject* pImageObj, 2397 const CFX_Matrix* pObj2Device) { 2398 CPDF_ImageRenderer render; 2399 if (render.Start(this, pImageObj, pObj2Device, m_bStdCS, m_curBlend)) 2400 render.Continue(nullptr); 2401 return render.GetResult(); 2402 } 2403 2404 void CPDF_RenderStatus::CompositeDIBitmap(CFX_DIBitmap* pDIBitmap, 2405 int left, 2406 int top, 2407 FX_ARGB mask_argb, 2408 int bitmap_alpha, 2409 int blend_mode, 2410 int Transparency) { 2411 if (!pDIBitmap) { 2412 return; 2413 } 2414 if (blend_mode == FXDIB_BLEND_NORMAL) { 2415 if (!pDIBitmap->IsAlphaMask()) { 2416 if (bitmap_alpha < 255) { 2417 #ifdef _SKIA_SUPPORT_ 2418 void* dummy; 2419 CFX_Matrix m(pDIBitmap->GetWidth(), 0, 0, -pDIBitmap->GetHeight(), left, 2420 top + pDIBitmap->GetHeight()); 2421 m_pDevice->StartDIBits(pDIBitmap, bitmap_alpha, 0, &m, 0, dummy); 2422 return; 2423 #else 2424 pDIBitmap->MultiplyAlpha(bitmap_alpha); 2425 #endif 2426 } 2427 #ifdef _SKIA_SUPPORT_ 2428 CFX_SkiaDeviceDriver::PreMultiply(pDIBitmap); 2429 #endif 2430 if (m_pDevice->SetDIBits(pDIBitmap, left, top)) { 2431 return; 2432 } 2433 } else { 2434 uint32_t fill_argb = m_Options.TranslateColor(mask_argb); 2435 if (bitmap_alpha < 255) { 2436 ((uint8_t*)&fill_argb)[3] = 2437 ((uint8_t*)&fill_argb)[3] * bitmap_alpha / 255; 2438 } 2439 if (m_pDevice->SetBitMask(pDIBitmap, left, top, fill_argb)) { 2440 return; 2441 } 2442 } 2443 } 2444 bool bIsolated = !!(Transparency & PDFTRANS_ISOLATED); 2445 bool bGroup = !!(Transparency & PDFTRANS_GROUP); 2446 bool bBackAlphaRequired = blend_mode && bIsolated && !m_bDropObjects; 2447 bool bGetBackGround = 2448 ((m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT)) || 2449 (!(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT) && 2450 (m_pDevice->GetRenderCaps() & FXRC_GET_BITS) && !bBackAlphaRequired); 2451 if (bGetBackGround) { 2452 if (bIsolated || !bGroup) { 2453 if (pDIBitmap->IsAlphaMask()) { 2454 return; 2455 } 2456 m_pDevice->SetDIBitsWithBlend(pDIBitmap, left, top, blend_mode); 2457 } else { 2458 FX_RECT rect(left, top, left + pDIBitmap->GetWidth(), 2459 top + pDIBitmap->GetHeight()); 2460 rect.Intersect(m_pDevice->GetClipBox()); 2461 CFX_MaybeOwned<CFX_DIBitmap> pClone; 2462 if (m_pDevice->GetBackDrop() && m_pDevice->GetBitmap()) { 2463 pClone = m_pDevice->GetBackDrop()->Clone(&rect); 2464 CFX_DIBitmap* pForeBitmap = m_pDevice->GetBitmap(); 2465 pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(), 2466 pForeBitmap, rect.left, rect.top); 2467 left = left >= 0 ? 0 : left; 2468 top = top >= 0 ? 0 : top; 2469 if (!pDIBitmap->IsAlphaMask()) 2470 pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(), 2471 pDIBitmap, left, top, blend_mode); 2472 else 2473 pClone->CompositeMask(0, 0, pClone->GetWidth(), pClone->GetHeight(), 2474 pDIBitmap, mask_argb, left, top, blend_mode); 2475 } else { 2476 pClone = pDIBitmap; 2477 } 2478 if (m_pDevice->GetBackDrop()) { 2479 m_pDevice->SetDIBits(pClone.Get(), rect.left, rect.top); 2480 } else { 2481 if (pDIBitmap->IsAlphaMask()) 2482 return; 2483 m_pDevice->SetDIBitsWithBlend(pDIBitmap, rect.left, rect.top, 2484 blend_mode); 2485 } 2486 } 2487 return; 2488 } 2489 int back_left, back_top; 2490 FX_RECT rect(left, top, left + pDIBitmap->GetWidth(), 2491 top + pDIBitmap->GetHeight()); 2492 std::unique_ptr<CFX_DIBitmap> pBackdrop = 2493 GetBackdrop(m_pCurObj, rect, back_left, back_top, 2494 blend_mode > FXDIB_BLEND_NORMAL && bIsolated); 2495 if (!pBackdrop) 2496 return; 2497 2498 if (!pDIBitmap->IsAlphaMask()) { 2499 pBackdrop->CompositeBitmap(left - back_left, top - back_top, 2500 pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), 2501 pDIBitmap, 0, 0, blend_mode); 2502 } else { 2503 pBackdrop->CompositeMask(left - back_left, top - back_top, 2504 pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), 2505 pDIBitmap, mask_argb, 0, 0, blend_mode); 2506 } 2507 2508 auto pBackdrop1 = pdfium::MakeUnique<CFX_DIBitmap>(); 2509 pBackdrop1->Create(pBackdrop->GetWidth(), pBackdrop->GetHeight(), 2510 FXDIB_Rgb32); 2511 pBackdrop1->Clear((uint32_t)-1); 2512 pBackdrop1->CompositeBitmap(0, 0, pBackdrop->GetWidth(), 2513 pBackdrop->GetHeight(), pBackdrop.get(), 0, 0); 2514 pBackdrop = std::move(pBackdrop1); 2515 m_pDevice->SetDIBits(pBackdrop.get(), back_left, back_top); 2516 } 2517 2518 std::unique_ptr<CFX_DIBitmap> CPDF_RenderStatus::LoadSMask( 2519 CPDF_Dictionary* pSMaskDict, 2520 FX_RECT* pClipRect, 2521 const CFX_Matrix* pMatrix) { 2522 if (!pSMaskDict) 2523 return nullptr; 2524 2525 CPDF_Stream* pGroup = pSMaskDict->GetStreamFor("G"); 2526 if (!pGroup) 2527 return nullptr; 2528 2529 std::unique_ptr<CPDF_Function> pFunc; 2530 CPDF_Object* pFuncObj = pSMaskDict->GetDirectObjectFor("TR"); 2531 if (pFuncObj && (pFuncObj->IsDictionary() || pFuncObj->IsStream())) 2532 pFunc = CPDF_Function::Load(pFuncObj); 2533 2534 CFX_Matrix matrix = *pMatrix; 2535 matrix.Translate(-pClipRect->left, -pClipRect->top); 2536 2537 CPDF_Form form(m_pContext->GetDocument(), m_pContext->GetPageResources(), 2538 pGroup); 2539 form.ParseContent(nullptr, nullptr, nullptr); 2540 2541 CFX_FxgeDevice bitmap_device; 2542 bool bLuminosity = pSMaskDict->GetStringFor("S") != "Alpha"; 2543 int width = pClipRect->right - pClipRect->left; 2544 int height = pClipRect->bottom - pClipRect->top; 2545 FXDIB_Format format; 2546 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ || defined _SKIA_SUPPORT_ || \ 2547 defined _SKIA_SUPPORT_PATHS_ 2548 format = bLuminosity ? FXDIB_Rgb32 : FXDIB_8bppMask; 2549 #else 2550 format = bLuminosity ? FXDIB_Rgb : FXDIB_8bppMask; 2551 #endif 2552 if (!bitmap_device.Create(width, height, format, nullptr)) 2553 return nullptr; 2554 2555 CFX_DIBitmap& bitmap = *bitmap_device.GetBitmap(); 2556 int color_space_family = 0; 2557 if (bLuminosity) { 2558 CPDF_Array* pBC = pSMaskDict->GetArrayFor("BC"); 2559 FX_ARGB back_color = 0xff000000; 2560 if (pBC) { 2561 CPDF_Object* pCSObj = nullptr; 2562 CPDF_Dictionary* pDict = pGroup->GetDict(); 2563 if (pDict && pDict->GetDictFor("Group")) { 2564 pCSObj = pDict->GetDictFor("Group")->GetDirectObjectFor("CS"); 2565 } 2566 const CPDF_ColorSpace* pCS = 2567 m_pContext->GetDocument()->LoadColorSpace(pCSObj); 2568 if (pCS) { 2569 // Store Color Space Family to use in CPDF_RenderStatus::Initialize. 2570 color_space_family = pCS->GetFamily(); 2571 2572 FX_FLOAT R, G, B; 2573 uint32_t comps = 8; 2574 if (pCS->CountComponents() > comps) { 2575 comps = pCS->CountComponents(); 2576 } 2577 CFX_FixedBufGrow<FX_FLOAT, 8> float_array(comps); 2578 FX_FLOAT* pFloats = float_array; 2579 FX_SAFE_UINT32 num_floats = comps; 2580 num_floats *= sizeof(FX_FLOAT); 2581 if (!num_floats.IsValid()) { 2582 return nullptr; 2583 } 2584 FXSYS_memset(pFloats, 0, num_floats.ValueOrDie()); 2585 size_t count = pBC->GetCount() > 8 ? 8 : pBC->GetCount(); 2586 for (size_t i = 0; i < count; i++) { 2587 pFloats[i] = pBC->GetNumberAt(i); 2588 } 2589 pCS->GetRGB(pFloats, R, G, B); 2590 back_color = 0xff000000 | ((int32_t)(R * 255) << 16) | 2591 ((int32_t)(G * 255) << 8) | (int32_t)(B * 255); 2592 m_pContext->GetDocument()->GetPageData()->ReleaseColorSpace(pCSObj); 2593 } 2594 } 2595 bitmap.Clear(back_color); 2596 } else { 2597 bitmap.Clear(0); 2598 } 2599 CPDF_Dictionary* pFormResource = nullptr; 2600 if (form.m_pFormDict) { 2601 pFormResource = form.m_pFormDict->GetDictFor("Resources"); 2602 } 2603 CPDF_RenderOptions options; 2604 options.m_ColorMode = bLuminosity ? RENDER_COLOR_NORMAL : RENDER_COLOR_ALPHA; 2605 CPDF_RenderStatus status; 2606 status.Initialize(m_pContext, &bitmap_device, nullptr, nullptr, nullptr, 2607 nullptr, &options, 0, m_bDropObjects, pFormResource, true, 2608 nullptr, 0, color_space_family, bLuminosity); 2609 status.RenderObjectList(&form, &matrix); 2610 2611 auto pMask = pdfium::MakeUnique<CFX_DIBitmap>(); 2612 if (!pMask->Create(width, height, FXDIB_8bppMask)) 2613 return nullptr; 2614 2615 uint8_t* dest_buf = pMask->GetBuffer(); 2616 int dest_pitch = pMask->GetPitch(); 2617 uint8_t* src_buf = bitmap.GetBuffer(); 2618 int src_pitch = bitmap.GetPitch(); 2619 std::vector<uint8_t> transfers(256); 2620 if (pFunc) { 2621 CFX_FixedBufGrow<FX_FLOAT, 16> results(pFunc->CountOutputs()); 2622 for (int i = 0; i < 256; i++) { 2623 FX_FLOAT input = (FX_FLOAT)i / 255.0f; 2624 int nresult; 2625 pFunc->Call(&input, 1, results, nresult); 2626 transfers[i] = FXSYS_round(results[0] * 255); 2627 } 2628 } else { 2629 for (int i = 0; i < 256; i++) { 2630 transfers[i] = i; 2631 } 2632 } 2633 if (bLuminosity) { 2634 int Bpp = bitmap.GetBPP() / 8; 2635 for (int row = 0; row < height; row++) { 2636 uint8_t* dest_pos = dest_buf + row * dest_pitch; 2637 uint8_t* src_pos = src_buf + row * src_pitch; 2638 for (int col = 0; col < width; col++) { 2639 *dest_pos++ = transfers[FXRGB2GRAY(src_pos[2], src_pos[1], *src_pos)]; 2640 src_pos += Bpp; 2641 } 2642 } 2643 } else if (pFunc) { 2644 int size = dest_pitch * height; 2645 for (int i = 0; i < size; i++) { 2646 dest_buf[i] = transfers[src_buf[i]]; 2647 } 2648 } else { 2649 FXSYS_memcpy(dest_buf, src_buf, dest_pitch * height); 2650 } 2651 return pMask; 2652 } 2653
