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 "render_int.h" 8 9 #include "core/include/fpdfapi/fpdf_module.h" 10 #include "core/include/fpdfapi/fpdf_render.h" 11 #include "core/include/fxge/fx_ge.h" 12 #include "core/src/fpdfapi/fpdf_page/pageint.h" 13 14 CPDF_DocRenderData::CPDF_DocRenderData(CPDF_Document* pPDFDoc) 15 : m_pPDFDoc(pPDFDoc), m_pFontCache(new CFX_FontCache) {} 16 17 CPDF_DocRenderData::~CPDF_DocRenderData() { 18 Clear(TRUE); 19 } 20 21 void CPDF_DocRenderData::Clear(FX_BOOL bRelease) { 22 for (auto it = m_Type3FaceMap.begin(); it != m_Type3FaceMap.end();) { 23 auto curr_it = it++; 24 CPDF_CountedObject<CPDF_Type3Cache>* cache = curr_it->second; 25 if (bRelease || cache->use_count() < 2) { 26 delete cache->get(); 27 delete cache; 28 m_Type3FaceMap.erase(curr_it); 29 } 30 } 31 32 for (auto it = m_TransferFuncMap.begin(); it != m_TransferFuncMap.end();) { 33 auto curr_it = it++; 34 CPDF_CountedObject<CPDF_TransferFunc>* value = curr_it->second; 35 if (bRelease || value->use_count() < 2) { 36 delete value->get(); 37 delete value; 38 m_TransferFuncMap.erase(curr_it); 39 } 40 } 41 42 if (m_pFontCache) { 43 if (bRelease) { 44 delete m_pFontCache; 45 m_pFontCache = NULL; 46 } else { 47 m_pFontCache->FreeCache(FALSE); 48 } 49 } 50 } 51 52 CPDF_Type3Cache* CPDF_DocRenderData::GetCachedType3(CPDF_Type3Font* pFont) { 53 CPDF_CountedObject<CPDF_Type3Cache>* pCache; 54 auto it = m_Type3FaceMap.find(pFont); 55 if (it == m_Type3FaceMap.end()) { 56 CPDF_Type3Cache* pType3 = new CPDF_Type3Cache(pFont); 57 pCache = new CPDF_CountedObject<CPDF_Type3Cache>(pType3); 58 m_Type3FaceMap[pFont] = pCache; 59 } else { 60 pCache = it->second; 61 } 62 return pCache->AddRef(); 63 } 64 65 void CPDF_DocRenderData::ReleaseCachedType3(CPDF_Type3Font* pFont) { 66 auto it = m_Type3FaceMap.find(pFont); 67 if (it != m_Type3FaceMap.end()) 68 it->second->RemoveRef(); 69 } 70 71 class CPDF_RenderModule : public IPDF_RenderModule { 72 public: 73 CPDF_RenderModule() {} 74 75 private: 76 ~CPDF_RenderModule() override {} 77 78 CPDF_DocRenderData* CreateDocData(CPDF_Document* pDoc) override; 79 void DestroyDocData(CPDF_DocRenderData* p) override; 80 void ClearDocData(CPDF_DocRenderData* p) override; 81 82 CPDF_DocRenderData* GetRenderData() override { return &m_RenderData; } 83 84 CPDF_PageRenderCache* CreatePageCache(CPDF_Page* pPage) override { 85 return new CPDF_PageRenderCache(pPage); 86 } 87 88 void DestroyPageCache(CPDF_PageRenderCache* pCache) override; 89 90 CPDF_RenderConfig* GetConfig() override { return &m_RenderConfig; } 91 92 CPDF_DocRenderData m_RenderData; 93 CPDF_RenderConfig m_RenderConfig; 94 }; 95 96 CPDF_DocRenderData* CPDF_RenderModule::CreateDocData(CPDF_Document* pDoc) { 97 return new CPDF_DocRenderData(pDoc); 98 } 99 void CPDF_RenderModule::DestroyDocData(CPDF_DocRenderData* pDocData) { 100 delete pDocData; 101 } 102 void CPDF_RenderModule::ClearDocData(CPDF_DocRenderData* p) { 103 if (p) { 104 p->Clear(FALSE); 105 } 106 } 107 void CPDF_RenderModule::DestroyPageCache(CPDF_PageRenderCache* pCache) { 108 delete pCache; 109 } 110 111 void CPDF_ModuleMgr::InitRenderModule() { 112 m_pRenderModule.reset(new CPDF_RenderModule); 113 } 114 115 CPDF_RenderOptions::CPDF_RenderOptions() 116 : m_ColorMode(RENDER_COLOR_NORMAL), 117 m_Flags(RENDER_CLEARTYPE), 118 m_Interpolation(0), 119 m_AddFlags(0), 120 m_pOCContext(NULL), 121 m_dwLimitCacheSize(1024 * 1024 * 100), 122 m_HalftoneLimit(-1) {} 123 FX_ARGB CPDF_RenderOptions::TranslateColor(FX_ARGB argb) const { 124 if (m_ColorMode == RENDER_COLOR_NORMAL) { 125 return argb; 126 } 127 if (m_ColorMode == RENDER_COLOR_ALPHA) { 128 return argb; 129 } 130 int a, r, g, b; 131 ArgbDecode(argb, a, r, g, b); 132 int gray = FXRGB2GRAY(r, g, b); 133 if (m_ColorMode == RENDER_COLOR_TWOCOLOR) { 134 int color = (r - gray) * (r - gray) + (g - gray) * (g - gray) + 135 (b - gray) * (b - gray); 136 if (gray < 35 && color < 20) { 137 return ArgbEncode(a, m_ForeColor); 138 } 139 if (gray > 221 && color < 20) { 140 return ArgbEncode(a, m_BackColor); 141 } 142 return argb; 143 } 144 int fr = FXSYS_GetRValue(m_ForeColor); 145 int fg = FXSYS_GetGValue(m_ForeColor); 146 int fb = FXSYS_GetBValue(m_ForeColor); 147 int br = FXSYS_GetRValue(m_BackColor); 148 int bg = FXSYS_GetGValue(m_BackColor); 149 int bb = FXSYS_GetBValue(m_BackColor); 150 r = (br - fr) * gray / 255 + fr; 151 g = (bg - fg) * gray / 255 + fg; 152 b = (bb - fb) * gray / 255 + fb; 153 return ArgbEncode(a, r, g, b); 154 } 155 156 // static 157 int CPDF_RenderStatus::s_CurrentRecursionDepth = 0; 158 159 CPDF_RenderStatus::CPDF_RenderStatus() 160 : m_pFormResource(nullptr), 161 m_pPageResource(nullptr), 162 m_pContext(nullptr), 163 m_bStopped(FALSE), 164 m_pDevice(nullptr), 165 m_pCurObj(nullptr), 166 m_pStopObj(nullptr), 167 m_HalftoneLimit(0), 168 m_bPrint(FALSE), 169 m_Transparency(0), 170 m_DitherBits(0), 171 m_bDropObjects(FALSE), 172 m_bStdCS(FALSE), 173 m_GroupFamily(0), 174 m_bLoadMask(FALSE), 175 m_pType3Char(nullptr), 176 m_T3FillColor(0), 177 m_curBlend(FXDIB_BLEND_NORMAL) {} 178 179 CPDF_RenderStatus::~CPDF_RenderStatus() { 180 } 181 182 FX_BOOL CPDF_RenderStatus::Initialize(CPDF_RenderContext* pContext, 183 CFX_RenderDevice* pDevice, 184 const CFX_Matrix* pDeviceMatrix, 185 const CPDF_PageObject* pStopObj, 186 const CPDF_RenderStatus* pParentState, 187 const CPDF_GraphicStates* pInitialStates, 188 const CPDF_RenderOptions* pOptions, 189 int transparency, 190 FX_BOOL bDropObjects, 191 CPDF_Dictionary* pFormResource, 192 FX_BOOL bStdCS, 193 CPDF_Type3Char* pType3Char, 194 FX_ARGB fill_color, 195 FX_DWORD GroupFamily, 196 FX_BOOL bLoadMask) { 197 m_pContext = pContext; 198 m_pDevice = pDevice; 199 m_DitherBits = pDevice->GetDeviceCaps(FXDC_DITHER_BITS); 200 m_bPrint = m_pDevice->GetDeviceClass() != FXDC_DISPLAY; 201 if (pDeviceMatrix) { 202 m_DeviceMatrix = *pDeviceMatrix; 203 } 204 m_pStopObj = pStopObj; 205 if (pOptions) { 206 m_Options = *pOptions; 207 } 208 m_bDropObjects = bDropObjects; 209 m_bStdCS = bStdCS; 210 m_T3FillColor = fill_color; 211 m_pType3Char = pType3Char; 212 m_GroupFamily = GroupFamily; 213 m_bLoadMask = bLoadMask; 214 m_pFormResource = pFormResource; 215 m_pPageResource = m_pContext->m_pPageResources; 216 if (pInitialStates && !m_pType3Char) { 217 m_InitialStates.CopyStates(*pInitialStates); 218 if (pParentState) { 219 CPDF_ColorStateData* pColorData = 220 (CPDF_ColorStateData*)(const CPDF_ColorStateData*) 221 m_InitialStates.m_ColorState; 222 CPDF_ColorStateData* pParentData = 223 (CPDF_ColorStateData*)(const CPDF_ColorStateData*) 224 pParentState->m_InitialStates.m_ColorState; 225 if (!pColorData || pColorData->m_FillColor.IsNull()) { 226 CPDF_ColorStateData* pData = m_InitialStates.m_ColorState.GetModify(); 227 pData->m_FillRGB = pParentData->m_FillRGB; 228 pData->m_FillColor.Copy(&pParentData->m_FillColor); 229 } 230 if (!pColorData || pColorData->m_StrokeColor.IsNull()) { 231 CPDF_ColorStateData* pData = m_InitialStates.m_ColorState.GetModify(); 232 pData->m_StrokeRGB = pParentData->m_FillRGB; 233 pData->m_StrokeColor.Copy(&pParentData->m_StrokeColor); 234 } 235 } 236 } else { 237 m_InitialStates.DefaultStates(); 238 } 239 m_pObjectRenderer.reset(); 240 m_Transparency = transparency; 241 return TRUE; 242 } 243 void CPDF_RenderStatus::RenderObjectList(const CPDF_PageObjects* pObjs, 244 const CFX_Matrix* pObj2Device) { 245 CFX_FloatRect clip_rect = m_pDevice->GetClipBox(); 246 CFX_Matrix device2object; 247 device2object.SetReverse(*pObj2Device); 248 device2object.TransformRect(clip_rect); 249 int index = 0; 250 FX_POSITION pos = pObjs->GetFirstObjectPosition(); 251 while (pos) { 252 index++; 253 CPDF_PageObject* pCurObj = pObjs->GetNextObject(pos); 254 if (pCurObj == m_pStopObj) { 255 m_bStopped = TRUE; 256 return; 257 } 258 if (!pCurObj) { 259 continue; 260 } 261 if (!pCurObj || pCurObj->m_Left > clip_rect.right || 262 pCurObj->m_Right < clip_rect.left || 263 pCurObj->m_Bottom > clip_rect.top || 264 pCurObj->m_Top < clip_rect.bottom) { 265 continue; 266 } 267 RenderSingleObject(pCurObj, pObj2Device); 268 if (m_bStopped) { 269 return; 270 } 271 } 272 } 273 void CPDF_RenderStatus::RenderSingleObject(const CPDF_PageObject* pObj, 274 const CFX_Matrix* pObj2Device) { 275 CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth); 276 if (++s_CurrentRecursionDepth > kRenderMaxRecursionDepth) { 277 return; 278 } 279 m_pCurObj = pObj; 280 if (m_Options.m_pOCContext && pObj->m_ContentMark.NotNull()) { 281 if (!m_Options.m_pOCContext->CheckObjectVisible(pObj)) { 282 return; 283 } 284 } 285 ProcessClipPath(pObj->m_ClipPath, pObj2Device); 286 if (ProcessTransparency(pObj, pObj2Device)) { 287 return; 288 } 289 ProcessObjectNoClip(pObj, pObj2Device); 290 } 291 292 FX_BOOL CPDF_RenderStatus::ContinueSingleObject(const CPDF_PageObject* pObj, 293 const CFX_Matrix* pObj2Device, 294 IFX_Pause* pPause) { 295 if (m_pObjectRenderer) { 296 if (m_pObjectRenderer->Continue(pPause)) 297 return TRUE; 298 299 if (!m_pObjectRenderer->m_Result) 300 DrawObjWithBackground(pObj, pObj2Device); 301 m_pObjectRenderer.reset(); 302 return FALSE; 303 } 304 305 m_pCurObj = pObj; 306 if (m_Options.m_pOCContext && pObj->m_ContentMark.NotNull() && 307 !m_Options.m_pOCContext->CheckObjectVisible(pObj)) { 308 return FALSE; 309 } 310 311 ProcessClipPath(pObj->m_ClipPath, pObj2Device); 312 if (ProcessTransparency(pObj, pObj2Device)) 313 return FALSE; 314 315 if (pObj->m_Type == PDFPAGE_IMAGE) { 316 m_pObjectRenderer.reset(IPDF_ObjectRenderer::Create(pObj->m_Type)); 317 if (!m_pObjectRenderer->Start(this, pObj, pObj2Device, FALSE)) { 318 if (!m_pObjectRenderer->m_Result) 319 DrawObjWithBackground(pObj, pObj2Device); 320 m_pObjectRenderer.reset(); 321 return FALSE; 322 } 323 return ContinueSingleObject(pObj, pObj2Device, pPause); 324 } 325 326 ProcessObjectNoClip(pObj, pObj2Device); 327 return FALSE; 328 } 329 330 IPDF_ObjectRenderer* IPDF_ObjectRenderer::Create(int type) { 331 if (type != PDFPAGE_IMAGE) { 332 return NULL; 333 } 334 return new CPDF_ImageRenderer; 335 } 336 FX_BOOL CPDF_RenderStatus::GetObjectClippedRect(const CPDF_PageObject* pObj, 337 const CFX_Matrix* pObj2Device, 338 FX_BOOL bLogical, 339 FX_RECT& rect) const { 340 rect = pObj->GetBBox(pObj2Device); 341 FX_RECT rtClip = m_pDevice->GetClipBox(); 342 if (!bLogical) { 343 CFX_Matrix dCTM = m_pDevice->GetCTM(); 344 FX_FLOAT a = FXSYS_fabs(dCTM.a); 345 FX_FLOAT d = FXSYS_fabs(dCTM.d); 346 if (a != 1.0f || d != 1.0f) { 347 rect.right = rect.left + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Width() * a); 348 rect.bottom = rect.top + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Height() * d); 349 rtClip.right = 350 rtClip.left + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Width() * a); 351 rtClip.bottom = 352 rtClip.top + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Height() * d); 353 } 354 } 355 rect.Intersect(rtClip); 356 return rect.IsEmpty(); 357 } 358 void CPDF_RenderStatus::DitherObjectArea(const CPDF_PageObject* pObj, 359 const CFX_Matrix* pObj2Device) { 360 CFX_DIBitmap* pBitmap = m_pDevice->GetBitmap(); 361 if (!pBitmap) { 362 return; 363 } 364 FX_RECT rect; 365 if (GetObjectClippedRect(pObj, pObj2Device, FALSE, rect)) { 366 return; 367 } 368 if (m_DitherBits == 2) { 369 static FX_ARGB pal[4] = {0, 85, 170, 255}; 370 pBitmap->DitherFS(pal, 4, &rect); 371 } else if (m_DitherBits == 3) { 372 static FX_ARGB pal[8] = {0, 36, 73, 109, 146, 182, 219, 255}; 373 pBitmap->DitherFS(pal, 8, &rect); 374 } else if (m_DitherBits == 4) { 375 static FX_ARGB pal[16] = {0, 17, 34, 51, 68, 85, 102, 119, 376 136, 153, 170, 187, 204, 221, 238, 255}; 377 pBitmap->DitherFS(pal, 16, &rect); 378 } 379 } 380 void CPDF_RenderStatus::ProcessObjectNoClip(const CPDF_PageObject* pObj, 381 const CFX_Matrix* pObj2Device) { 382 FX_BOOL bRet = FALSE; 383 switch (pObj->m_Type) { 384 case PDFPAGE_TEXT: 385 bRet = ProcessText((CPDF_TextObject*)pObj, pObj2Device, NULL); 386 break; 387 case PDFPAGE_PATH: 388 bRet = ProcessPath((CPDF_PathObject*)pObj, pObj2Device); 389 break; 390 case PDFPAGE_IMAGE: 391 bRet = ProcessImage((CPDF_ImageObject*)pObj, pObj2Device); 392 break; 393 case PDFPAGE_SHADING: 394 bRet = ProcessShading((CPDF_ShadingObject*)pObj, pObj2Device); 395 break; 396 case PDFPAGE_FORM: 397 bRet = ProcessForm((CPDF_FormObject*)pObj, pObj2Device); 398 break; 399 } 400 if (!bRet) { 401 DrawObjWithBackground(pObj, pObj2Device); 402 } 403 } 404 FX_BOOL CPDF_RenderStatus::DrawObjWithBlend(const CPDF_PageObject* pObj, 405 const CFX_Matrix* pObj2Device) { 406 FX_BOOL bRet = FALSE; 407 switch (pObj->m_Type) { 408 case PDFPAGE_PATH: 409 bRet = ProcessPath((CPDF_PathObject*)pObj, pObj2Device); 410 break; 411 case PDFPAGE_IMAGE: 412 bRet = ProcessImage((CPDF_ImageObject*)pObj, pObj2Device); 413 break; 414 case PDFPAGE_FORM: 415 bRet = ProcessForm((CPDF_FormObject*)pObj, pObj2Device); 416 break; 417 } 418 return bRet; 419 } 420 void CPDF_RenderStatus::GetScaledMatrix(CFX_Matrix& matrix) const { 421 CFX_Matrix dCTM = m_pDevice->GetCTM(); 422 matrix.a *= FXSYS_fabs(dCTM.a); 423 matrix.d *= FXSYS_fabs(dCTM.d); 424 } 425 void CPDF_RenderStatus::DrawObjWithBackground(const CPDF_PageObject* pObj, 426 const CFX_Matrix* pObj2Device) { 427 FX_RECT rect; 428 if (GetObjectClippedRect(pObj, pObj2Device, FALSE, rect)) { 429 return; 430 } 431 int res = 300; 432 if (pObj->m_Type == PDFPAGE_IMAGE && 433 m_pDevice->GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) { 434 res = 0; 435 } 436 CPDF_ScaledRenderBuffer buffer; 437 if (!buffer.Initialize(m_pContext, m_pDevice, rect, pObj, &m_Options, res)) { 438 return; 439 } 440 CFX_Matrix matrix = *pObj2Device; 441 matrix.Concat(*buffer.GetMatrix()); 442 GetScaledMatrix(matrix); 443 CPDF_Dictionary* pFormResource = NULL; 444 if (pObj->m_Type == PDFPAGE_FORM) { 445 CPDF_FormObject* pFormObj = (CPDF_FormObject*)pObj; 446 if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) { 447 pFormResource = pFormObj->m_pForm->m_pFormDict->GetDict("Resources"); 448 } 449 } 450 CPDF_RenderStatus status; 451 status.Initialize(m_pContext, buffer.GetDevice(), buffer.GetMatrix(), NULL, 452 NULL, NULL, &m_Options, m_Transparency, m_bDropObjects, 453 pFormResource); 454 status.RenderSingleObject(pObj, &matrix); 455 buffer.OutputToDevice(); 456 } 457 FX_BOOL CPDF_RenderStatus::ProcessForm(CPDF_FormObject* pFormObj, 458 const CFX_Matrix* pObj2Device) { 459 CPDF_Dictionary* pOC = pFormObj->m_pForm->m_pFormDict->GetDict("OC"); 460 if (pOC && m_Options.m_pOCContext && 461 !m_Options.m_pOCContext->CheckOCGVisible(pOC)) { 462 return TRUE; 463 } 464 CFX_Matrix matrix = pFormObj->m_FormMatrix; 465 matrix.Concat(*pObj2Device); 466 CPDF_Dictionary* pResources = NULL; 467 if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) { 468 pResources = pFormObj->m_pForm->m_pFormDict->GetDict("Resources"); 469 } 470 CPDF_RenderStatus status; 471 status.Initialize(m_pContext, m_pDevice, NULL, m_pStopObj, this, pFormObj, 472 &m_Options, m_Transparency, m_bDropObjects, pResources, 473 FALSE); 474 status.m_curBlend = m_curBlend; 475 m_pDevice->SaveState(); 476 status.RenderObjectList(pFormObj->m_pForm, &matrix); 477 m_bStopped = status.m_bStopped; 478 m_pDevice->RestoreState(); 479 return TRUE; 480 } 481 FX_BOOL IsAvailableMatrix(const CFX_Matrix& matrix) { 482 if (matrix.a == 0 || matrix.d == 0) { 483 return matrix.b != 0 && matrix.c != 0; 484 } 485 if (matrix.b == 0 || matrix.c == 0) { 486 return matrix.a != 0 && matrix.d != 0; 487 } 488 return TRUE; 489 } 490 FX_BOOL CPDF_RenderStatus::ProcessPath(CPDF_PathObject* pPathObj, 491 const CFX_Matrix* pObj2Device) { 492 int FillType = pPathObj->m_FillType; 493 FX_BOOL bStroke = pPathObj->m_bStroke; 494 ProcessPathPattern(pPathObj, pObj2Device, FillType, bStroke); 495 if (FillType == 0 && !bStroke) { 496 return TRUE; 497 } 498 FX_DWORD fill_argb = 0; 499 if (FillType) { 500 fill_argb = GetFillArgb(pPathObj); 501 } 502 FX_DWORD stroke_argb = 0; 503 if (bStroke) { 504 stroke_argb = GetStrokeArgb(pPathObj); 505 } 506 CFX_Matrix path_matrix = pPathObj->m_Matrix; 507 path_matrix.Concat(*pObj2Device); 508 if (!IsAvailableMatrix(path_matrix)) { 509 return TRUE; 510 } 511 if (FillType && (m_Options.m_Flags & RENDER_RECT_AA)) { 512 FillType |= FXFILL_RECT_AA; 513 } 514 if (m_Options.m_Flags & RENDER_FILL_FULLCOVER) { 515 FillType |= FXFILL_FULLCOVER; 516 } 517 if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) { 518 FillType |= FXFILL_NOPATHSMOOTH; 519 } 520 if (bStroke) { 521 FillType |= FX_FILL_STROKE; 522 } 523 const CPDF_GeneralStateData* pGeneralData = 524 ((CPDF_PageObject*)pPathObj)->m_GeneralState; 525 if (pGeneralData && pGeneralData->m_StrokeAdjust) { 526 FillType |= FX_STROKE_ADJUST; 527 } 528 if (m_pType3Char) { 529 FillType |= FX_FILL_TEXT_MODE; 530 } 531 CFX_GraphStateData graphState(*pPathObj->m_GraphState); 532 if (m_Options.m_Flags & RENDER_THINLINE) { 533 graphState.m_LineWidth = 0; 534 } 535 return m_pDevice->DrawPath(pPathObj->m_Path, &path_matrix, &graphState, 536 fill_argb, stroke_argb, FillType, 0, NULL, 537 m_curBlend); 538 } 539 CPDF_TransferFunc* CPDF_RenderStatus::GetTransferFunc(CPDF_Object* pObj) const { 540 ASSERT(pObj); 541 CPDF_DocRenderData* pDocCache = m_pContext->m_pDocument->GetRenderData(); 542 return pDocCache ? pDocCache->GetTransferFunc(pObj) : nullptr; 543 } 544 FX_ARGB CPDF_RenderStatus::GetFillArgb(const CPDF_PageObject* pObj, 545 FX_BOOL bType3) const { 546 CPDF_ColorStateData* pColorData = 547 (CPDF_ColorStateData*)(const CPDF_ColorStateData*)pObj->m_ColorState; 548 if (m_pType3Char && !bType3 && 549 (!m_pType3Char->m_bColored || 550 (m_pType3Char->m_bColored && 551 (!pColorData || pColorData->m_FillColor.IsNull())))) { 552 return m_T3FillColor; 553 } 554 if (!pColorData || pColorData->m_FillColor.IsNull()) { 555 pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*) 556 m_InitialStates.m_ColorState; 557 } 558 FX_COLORREF rgb = pColorData->m_FillRGB; 559 if (rgb == (FX_DWORD)-1) { 560 return 0; 561 } 562 const CPDF_GeneralStateData* pGeneralData = pObj->m_GeneralState; 563 int alpha; 564 if (pGeneralData) { 565 alpha = (int32_t)(pGeneralData->m_FillAlpha * 255); 566 if (pGeneralData->m_pTR) { 567 if (!pGeneralData->m_pTransferFunc) { 568 ((CPDF_GeneralStateData*)pGeneralData)->m_pTransferFunc = 569 GetTransferFunc(pGeneralData->m_pTR); 570 } 571 if (pGeneralData->m_pTransferFunc) { 572 rgb = pGeneralData->m_pTransferFunc->TranslateColor(rgb); 573 } 574 } 575 } else { 576 alpha = 255; 577 } 578 return m_Options.TranslateColor(ArgbEncode(alpha, rgb)); 579 } 580 FX_ARGB CPDF_RenderStatus::GetStrokeArgb(const CPDF_PageObject* pObj) const { 581 CPDF_ColorStateData* pColorData = 582 (CPDF_ColorStateData*)(const CPDF_ColorStateData*)pObj->m_ColorState; 583 if (m_pType3Char && (!m_pType3Char->m_bColored || 584 (m_pType3Char->m_bColored && 585 (!pColorData || pColorData->m_StrokeColor.IsNull())))) { 586 return m_T3FillColor; 587 } 588 if (!pColorData || pColorData->m_StrokeColor.IsNull()) { 589 pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*) 590 m_InitialStates.m_ColorState; 591 } 592 FX_COLORREF rgb = pColorData->m_StrokeRGB; 593 if (rgb == (FX_DWORD)-1) { 594 return 0; 595 } 596 const CPDF_GeneralStateData* pGeneralData = pObj->m_GeneralState; 597 int alpha; 598 if (pGeneralData) { 599 alpha = (int32_t)(pGeneralData->m_StrokeAlpha * 255); 600 if (pGeneralData->m_pTR) { 601 if (!pGeneralData->m_pTransferFunc) { 602 ((CPDF_GeneralStateData*)pGeneralData)->m_pTransferFunc = 603 GetTransferFunc(pGeneralData->m_pTR); 604 } 605 if (pGeneralData->m_pTransferFunc) { 606 rgb = pGeneralData->m_pTransferFunc->TranslateColor(rgb); 607 } 608 } 609 } else { 610 alpha = 255; 611 } 612 return m_Options.TranslateColor(ArgbEncode(alpha, rgb)); 613 } 614 void CPDF_RenderStatus::ProcessClipPath(CPDF_ClipPath ClipPath, 615 const CFX_Matrix* pObj2Device) { 616 if (ClipPath.IsNull()) { 617 if (!m_LastClipPath.IsNull()) { 618 m_pDevice->RestoreState(TRUE); 619 m_LastClipPath.SetNull(); 620 } 621 return; 622 } 623 if (m_LastClipPath == ClipPath) 624 return; 625 626 m_LastClipPath = ClipPath; 627 m_pDevice->RestoreState(TRUE); 628 int nClipPath = ClipPath.GetPathCount(); 629 for (int i = 0; i < nClipPath; ++i) { 630 const CFX_PathData* pPathData = ClipPath.GetPath(i); 631 if (!pPathData) 632 continue; 633 634 if (pPathData->GetPointCount() == 0) { 635 CFX_PathData EmptyPath; 636 EmptyPath.AppendRect(-1, -1, 0, 0); 637 int fill_mode = FXFILL_WINDING; 638 m_pDevice->SetClip_PathFill(&EmptyPath, nullptr, fill_mode); 639 } else { 640 int ClipType = ClipPath.GetClipType(i); 641 m_pDevice->SetClip_PathFill(pPathData, pObj2Device, ClipType); 642 } 643 } 644 int textcount = ClipPath.GetTextCount(); 645 if (textcount == 0) 646 return; 647 648 if (m_pDevice->GetDeviceClass() == FXDC_DISPLAY && 649 !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) { 650 return; 651 } 652 653 std::unique_ptr<CFX_PathData> pTextClippingPath; 654 for (int i = 0; i < textcount; ++i) { 655 CPDF_TextObject* pText = ClipPath.GetText(i); 656 if (pText) { 657 if (!pTextClippingPath) 658 pTextClippingPath.reset(new CFX_PathData); 659 ProcessText(pText, pObj2Device, pTextClippingPath.get()); 660 continue; 661 } 662 663 if (!pTextClippingPath) 664 continue; 665 666 int fill_mode = FXFILL_WINDING; 667 if (m_Options.m_Flags & RENDER_NOTEXTSMOOTH) 668 fill_mode |= FXFILL_NOPATHSMOOTH; 669 m_pDevice->SetClip_PathFill(pTextClippingPath.get(), nullptr, fill_mode); 670 pTextClippingPath.reset(); 671 } 672 } 673 674 void CPDF_RenderStatus::DrawClipPath(CPDF_ClipPath ClipPath, 675 const CFX_Matrix* pObj2Device) { 676 if (ClipPath.IsNull()) { 677 return; 678 } 679 int fill_mode = 0; 680 if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) { 681 fill_mode |= FXFILL_NOPATHSMOOTH; 682 } 683 int nClipPath = ClipPath.GetPathCount(); 684 int i; 685 for (i = 0; i < nClipPath; i++) { 686 const CFX_PathData* pPathData = ClipPath.GetPath(i); 687 if (!pPathData) { 688 continue; 689 } 690 CFX_GraphStateData stroke_state; 691 if (m_Options.m_Flags & RENDER_THINLINE) { 692 stroke_state.m_LineWidth = 0; 693 } 694 m_pDevice->DrawPath(pPathData, pObj2Device, &stroke_state, 0, 0xffff0000, 695 fill_mode); 696 } 697 } 698 FX_BOOL CPDF_RenderStatus::SelectClipPath(CPDF_PathObject* pPathObj, 699 const CFX_Matrix* pObj2Device, 700 FX_BOOL bStroke) { 701 CFX_Matrix path_matrix = pPathObj->m_Matrix; 702 path_matrix.Concat(*pObj2Device); 703 if (bStroke) { 704 CFX_GraphStateData graphState(*pPathObj->m_GraphState); 705 if (m_Options.m_Flags & RENDER_THINLINE) { 706 graphState.m_LineWidth = 0; 707 } 708 return m_pDevice->SetClip_PathStroke(pPathObj->m_Path, &path_matrix, 709 &graphState); 710 } 711 int fill_mode = pPathObj->m_FillType; 712 if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) { 713 fill_mode |= FXFILL_NOPATHSMOOTH; 714 } 715 return m_pDevice->SetClip_PathFill(pPathObj->m_Path, &path_matrix, fill_mode); 716 } 717 FX_BOOL CPDF_RenderStatus::ProcessTransparency(const CPDF_PageObject* pPageObj, 718 const CFX_Matrix* pObj2Device) { 719 const CPDF_GeneralStateData* pGeneralState = pPageObj->m_GeneralState; 720 int blend_type = 721 pGeneralState ? pGeneralState->m_BlendType : FXDIB_BLEND_NORMAL; 722 if (blend_type == FXDIB_BLEND_UNSUPPORTED) { 723 return TRUE; 724 } 725 CPDF_Dictionary* pSMaskDict = 726 pGeneralState ? ToDictionary(pGeneralState->m_pSoftMask) : NULL; 727 if (pSMaskDict) { 728 if (pPageObj->m_Type == PDFPAGE_IMAGE && 729 ((CPDF_ImageObject*)pPageObj)->m_pImage->GetDict()->KeyExist("SMask")) { 730 pSMaskDict = NULL; 731 } 732 } 733 CPDF_Dictionary* pFormResource = NULL; 734 FX_FLOAT group_alpha = 1.0f; 735 int Transparency = m_Transparency; 736 FX_BOOL bGroupTransparent = FALSE; 737 if (pPageObj->m_Type == PDFPAGE_FORM) { 738 CPDF_FormObject* pFormObj = (CPDF_FormObject*)pPageObj; 739 const CPDF_GeneralStateData* pStateData = 740 pFormObj->m_GeneralState.GetObject(); 741 if (pStateData) { 742 group_alpha = pStateData->m_FillAlpha; 743 } 744 Transparency = pFormObj->m_pForm->m_Transparency; 745 bGroupTransparent = !!(Transparency & PDFTRANS_ISOLATED); 746 if (pFormObj->m_pForm->m_pFormDict) { 747 pFormResource = pFormObj->m_pForm->m_pFormDict->GetDict("Resources"); 748 } 749 } 750 FX_BOOL bTextClip = FALSE; 751 if (pPageObj->m_ClipPath.NotNull() && pPageObj->m_ClipPath.GetTextCount() && 752 m_pDevice->GetDeviceClass() == FXDC_DISPLAY && 753 !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) { 754 bTextClip = TRUE; 755 } 756 if ((m_Options.m_Flags & RENDER_OVERPRINT) && 757 pPageObj->m_Type == PDFPAGE_IMAGE && pGeneralState && 758 pGeneralState->m_FillOP && pGeneralState->m_StrokeOP) { 759 CPDF_Document* pDocument = NULL; 760 CPDF_Page* pPage = NULL; 761 if (m_pContext->m_pPageCache) { 762 pPage = m_pContext->m_pPageCache->GetPage(); 763 pDocument = pPage->m_pDocument; 764 } else { 765 pDocument = ((CPDF_ImageObject*)pPageObj)->m_pImage->GetDocument(); 766 } 767 CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : NULL; 768 CPDF_Object* pCSObj = ((CPDF_ImageObject*)pPageObj) 769 ->m_pImage->GetStream() 770 ->GetDict() 771 ->GetElementValue("ColorSpace"); 772 CPDF_ColorSpace* pColorSpace = 773 pDocument->LoadColorSpace(pCSObj, pPageResources); 774 if (pColorSpace) { 775 int format = pColorSpace->GetFamily(); 776 if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION || 777 format == PDFCS_DEVICEN) { 778 blend_type = FXDIB_BLEND_DARKEN; 779 } 780 pDocument->GetPageData()->ReleaseColorSpace(pCSObj); 781 } 782 } 783 if (!pSMaskDict && group_alpha == 1.0f && blend_type == FXDIB_BLEND_NORMAL && 784 !bTextClip && !bGroupTransparent) { 785 return FALSE; 786 } 787 FX_BOOL isolated = Transparency & PDFTRANS_ISOLATED; 788 if (m_bPrint) { 789 FX_BOOL bRet = FALSE; 790 int rendCaps = m_pDevice->GetRenderCaps(); 791 if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) && 792 (rendCaps & FXRC_BLEND_MODE)) { 793 int oldBlend = m_curBlend; 794 m_curBlend = blend_type; 795 bRet = DrawObjWithBlend(pPageObj, pObj2Device); 796 m_curBlend = oldBlend; 797 } 798 if (!bRet) { 799 DrawObjWithBackground(pPageObj, pObj2Device); 800 } 801 return TRUE; 802 } 803 FX_RECT rect = pPageObj->GetBBox(pObj2Device); 804 rect.Intersect(m_pDevice->GetClipBox()); 805 if (rect.IsEmpty()) { 806 return TRUE; 807 } 808 CFX_Matrix deviceCTM = m_pDevice->GetCTM(); 809 FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a); 810 FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d); 811 int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX); 812 int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY); 813 CFX_FxgeDevice bitmap_device; 814 std::unique_ptr<CFX_DIBitmap> oriDevice; 815 if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) { 816 oriDevice.reset(new CFX_DIBitmap); 817 if (!m_pDevice->CreateCompatibleBitmap(oriDevice.get(), width, height)) 818 return TRUE; 819 820 m_pDevice->GetDIBits(oriDevice.get(), rect.left, rect.top); 821 } 822 if (!bitmap_device.Create(width, height, FXDIB_Argb, 0, oriDevice.get())) 823 return TRUE; 824 825 CFX_DIBitmap* bitmap = bitmap_device.GetBitmap(); 826 bitmap->Clear(0); 827 CFX_Matrix new_matrix = *pObj2Device; 828 new_matrix.TranslateI(-rect.left, -rect.top); 829 new_matrix.Scale(scaleX, scaleY); 830 std::unique_ptr<CFX_DIBitmap> pTextMask; 831 if (bTextClip) { 832 pTextMask.reset(new CFX_DIBitmap); 833 if (!pTextMask->Create(width, height, FXDIB_8bppMask)) 834 return TRUE; 835 836 pTextMask->Clear(0); 837 CFX_FxgeDevice text_device; 838 text_device.Attach(pTextMask.get()); 839 for (FX_DWORD i = 0; i < pPageObj->m_ClipPath.GetTextCount(); i++) { 840 CPDF_TextObject* textobj = pPageObj->m_ClipPath.GetText(i); 841 if (!textobj) { 842 break; 843 } 844 CFX_Matrix text_matrix; 845 textobj->GetTextMatrix(&text_matrix); 846 CPDF_TextRenderer::DrawTextPath( 847 &text_device, textobj->m_nChars, textobj->m_pCharCodes, 848 textobj->m_pCharPos, textobj->m_TextState.GetFont(), 849 textobj->m_TextState.GetFontSize(), &text_matrix, &new_matrix, 850 textobj->m_GraphState, (FX_ARGB)-1, 0, NULL); 851 } 852 } 853 CPDF_RenderStatus bitmap_render; 854 bitmap_render.Initialize(m_pContext, &bitmap_device, NULL, m_pStopObj, NULL, 855 NULL, &m_Options, 0, m_bDropObjects, pFormResource, 856 TRUE); 857 bitmap_render.ProcessObjectNoClip(pPageObj, &new_matrix); 858 m_bStopped = bitmap_render.m_bStopped; 859 if (pSMaskDict) { 860 CFX_Matrix smask_matrix; 861 FXSYS_memcpy(&smask_matrix, pGeneralState->m_SMaskMatrix, 862 sizeof smask_matrix); 863 smask_matrix.Concat(*pObj2Device); 864 std::unique_ptr<CFX_DIBSource> pSMaskSource( 865 LoadSMask(pSMaskDict, &rect, &smask_matrix)); 866 if (pSMaskSource) 867 bitmap->MultiplyAlpha(pSMaskSource.get()); 868 } 869 if (pTextMask) { 870 bitmap->MultiplyAlpha(pTextMask.get()); 871 pTextMask.reset(); 872 } 873 if (Transparency & PDFTRANS_GROUP && group_alpha != 1.0f) { 874 bitmap->MultiplyAlpha((int32_t)(group_alpha * 255)); 875 } 876 Transparency = m_Transparency; 877 if (pPageObj->m_Type == PDFPAGE_FORM) { 878 Transparency |= PDFTRANS_GROUP; 879 } 880 CompositeDIBitmap(bitmap, rect.left, rect.top, 0, 255, blend_type, 881 Transparency); 882 return TRUE; 883 } 884 885 CFX_DIBitmap* CPDF_RenderStatus::GetBackdrop(const CPDF_PageObject* pObj, 886 const FX_RECT& rect, 887 int& left, 888 int& top, 889 FX_BOOL bBackAlphaRequired) { 890 FX_RECT bbox = rect; 891 bbox.Intersect(m_pDevice->GetClipBox()); 892 left = bbox.left; 893 top = bbox.top; 894 CFX_Matrix deviceCTM = m_pDevice->GetCTM(); 895 FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a); 896 FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d); 897 int width = FXSYS_round(bbox.Width() * scaleX); 898 int height = FXSYS_round(bbox.Height() * scaleY); 899 std::unique_ptr<CFX_DIBitmap> pBackdrop(new CFX_DIBitmap); 900 if (bBackAlphaRequired && !m_bDropObjects) 901 pBackdrop->Create(width, height, FXDIB_Argb); 902 else 903 m_pDevice->CreateCompatibleBitmap(pBackdrop.get(), width, height); 904 905 if (!pBackdrop->GetBuffer()) 906 return nullptr; 907 908 FX_BOOL bNeedDraw; 909 if (pBackdrop->HasAlpha()) 910 bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT); 911 else 912 bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_GET_BITS); 913 914 if (!bNeedDraw) { 915 m_pDevice->GetDIBits(pBackdrop.get(), left, top); 916 return pBackdrop.release(); 917 } 918 919 CFX_Matrix FinalMatrix = m_DeviceMatrix; 920 FinalMatrix.TranslateI(-left, -top); 921 FinalMatrix.Scale(scaleX, scaleY); 922 pBackdrop->Clear(pBackdrop->HasAlpha() ? 0 : 0xffffffff); 923 CFX_FxgeDevice device; 924 device.Attach(pBackdrop.get()); 925 m_pContext->Render(&device, pObj, &m_Options, &FinalMatrix); 926 return pBackdrop.release(); 927 } 928 929 void CPDF_RenderContext::GetBackground(CFX_DIBitmap* pBuffer, 930 const CPDF_PageObject* pObj, 931 const CPDF_RenderOptions* pOptions, 932 CFX_Matrix* pFinalMatrix) { 933 CFX_FxgeDevice device; 934 device.Attach(pBuffer); 935 936 FX_RECT rect(0, 0, device.GetWidth(), device.GetHeight()); 937 device.FillRect(&rect, 0xffffffff); 938 Render(&device, pObj, pOptions, pFinalMatrix); 939 } 940 CPDF_GraphicStates* CPDF_RenderStatus::CloneObjStates( 941 const CPDF_GraphicStates* pSrcStates, 942 FX_BOOL bStroke) { 943 if (!pSrcStates) { 944 return NULL; 945 } 946 CPDF_GraphicStates* pStates = new CPDF_GraphicStates; 947 pStates->CopyStates(*pSrcStates); 948 CPDF_Color* pObjColor = bStroke ? pSrcStates->m_ColorState.GetStrokeColor() 949 : pSrcStates->m_ColorState.GetFillColor(); 950 if (!pObjColor->IsNull()) { 951 CPDF_ColorStateData* pColorData = pStates->m_ColorState.GetModify(); 952 pColorData->m_FillRGB = 953 bStroke ? pSrcStates->m_ColorState.GetObject()->m_StrokeRGB 954 : pSrcStates->m_ColorState.GetObject()->m_FillRGB; 955 pColorData->m_StrokeRGB = pColorData->m_FillRGB; 956 } 957 return pStates; 958 } 959 CPDF_RenderContext::CPDF_RenderContext(CPDF_Page* pPage) 960 : m_pDocument(pPage->m_pDocument), 961 m_pPageResources(pPage->m_pPageResources), 962 m_pPageCache(pPage->GetRenderCache()), 963 m_bFirstLayer(TRUE) {} 964 CPDF_RenderContext::CPDF_RenderContext(CPDF_Document* pDoc, 965 CPDF_PageRenderCache* pPageCache) 966 : m_pDocument(pDoc), 967 m_pPageResources(nullptr), 968 m_pPageCache(pPageCache), 969 m_bFirstLayer(TRUE) {} 970 CPDF_RenderContext::~CPDF_RenderContext() {} 971 void CPDF_RenderContext::AppendObjectList(CPDF_PageObjects* pObjs, 972 const CFX_Matrix* pObject2Device) { 973 _PDF_RenderItem* pItem = m_ContentList.AddSpace(); 974 pItem->m_pObjectList = pObjs; 975 if (pObject2Device) { 976 pItem->m_Matrix = *pObject2Device; 977 } else { 978 pItem->m_Matrix.SetIdentity(); 979 } 980 } 981 void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice, 982 const CPDF_RenderOptions* pOptions, 983 const CFX_Matrix* pLastMatrix) { 984 Render(pDevice, NULL, pOptions, pLastMatrix); 985 } 986 void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice, 987 const CPDF_PageObject* pStopObj, 988 const CPDF_RenderOptions* pOptions, 989 const CFX_Matrix* pLastMatrix) { 990 int count = m_ContentList.GetSize(); 991 for (int j = 0; j < count; j++) { 992 pDevice->SaveState(); 993 _PDF_RenderItem* pItem = m_ContentList.GetDataPtr(j); 994 if (pLastMatrix) { 995 CFX_Matrix FinalMatrix = pItem->m_Matrix; 996 FinalMatrix.Concat(*pLastMatrix); 997 CPDF_RenderStatus status; 998 status.Initialize(this, pDevice, pLastMatrix, pStopObj, NULL, NULL, 999 pOptions, pItem->m_pObjectList->m_Transparency, FALSE, 1000 NULL); 1001 status.RenderObjectList(pItem->m_pObjectList, &FinalMatrix); 1002 if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) { 1003 m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize); 1004 } 1005 if (status.m_bStopped) { 1006 pDevice->RestoreState(); 1007 break; 1008 } 1009 } else { 1010 CPDF_RenderStatus status; 1011 status.Initialize(this, pDevice, NULL, pStopObj, NULL, NULL, pOptions, 1012 pItem->m_pObjectList->m_Transparency, FALSE, NULL); 1013 status.RenderObjectList(pItem->m_pObjectList, &pItem->m_Matrix); 1014 if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) { 1015 m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize); 1016 } 1017 if (status.m_bStopped) { 1018 pDevice->RestoreState(); 1019 break; 1020 } 1021 } 1022 pDevice->RestoreState(); 1023 } 1024 } 1025 void CPDF_RenderContext::DrawObjectList(CFX_RenderDevice* pDevice, 1026 CPDF_PageObjects* pObjs, 1027 const CFX_Matrix* pObject2Device, 1028 const CPDF_RenderOptions* pOptions) { 1029 AppendObjectList(pObjs, pObject2Device); 1030 Render(pDevice, pOptions); 1031 } 1032 1033 CPDF_ProgressiveRenderer::CPDF_ProgressiveRenderer( 1034 CPDF_RenderContext* pContext, 1035 CFX_RenderDevice* pDevice, 1036 const CPDF_RenderOptions* pOptions) 1037 : m_Status(Ready), 1038 m_pContext(pContext), 1039 m_pDevice(pDevice), 1040 m_pOptions(pOptions), 1041 m_LayerIndex(0), 1042 m_ObjectIndex(0), 1043 m_ObjectPos(nullptr), 1044 m_PrevLastPos(nullptr) { 1045 } 1046 1047 CPDF_ProgressiveRenderer::~CPDF_ProgressiveRenderer() { 1048 if (m_pRenderStatus) 1049 m_pDevice->RestoreState(); 1050 } 1051 1052 void CPDF_ProgressiveRenderer::Start(IFX_Pause* pPause) { 1053 if (!m_pContext || !m_pDevice || m_Status != Ready) { 1054 m_Status = Failed; 1055 return; 1056 } 1057 m_Status = ToBeContinued; 1058 Continue(pPause); 1059 } 1060 1061 #define RENDER_STEP_LIMIT 100 1062 void CPDF_ProgressiveRenderer::Continue(IFX_Pause* pPause) { 1063 if (m_Status != ToBeContinued) { 1064 return; 1065 } 1066 FX_DWORD nLayers = m_pContext->m_ContentList.GetSize(); 1067 for (; m_LayerIndex < nLayers; m_LayerIndex++) { 1068 _PDF_RenderItem* pItem = m_pContext->m_ContentList.GetDataPtr(m_LayerIndex); 1069 FX_POSITION LastPos = pItem->m_pObjectList->GetLastObjectPosition(); 1070 if (!m_ObjectPos) { 1071 if (LastPos == m_PrevLastPos) { 1072 if (!pItem->m_pObjectList->IsParsed()) { 1073 pItem->m_pObjectList->ContinueParse(pPause); 1074 if (!pItem->m_pObjectList->IsParsed()) { 1075 return; 1076 } 1077 LastPos = pItem->m_pObjectList->GetLastObjectPosition(); 1078 } 1079 } 1080 if (LastPos == m_PrevLastPos) { 1081 if (m_pRenderStatus) { 1082 m_pRenderStatus.reset(); 1083 m_pDevice->RestoreState(); 1084 m_ObjectPos = NULL; 1085 m_PrevLastPos = NULL; 1086 } 1087 continue; 1088 } 1089 if (m_PrevLastPos) { 1090 m_ObjectPos = m_PrevLastPos; 1091 pItem->m_pObjectList->GetNextObject(m_ObjectPos); 1092 } else { 1093 m_ObjectPos = pItem->m_pObjectList->GetFirstObjectPosition(); 1094 } 1095 m_PrevLastPos = LastPos; 1096 } 1097 if (!m_pRenderStatus) { 1098 m_ObjectPos = pItem->m_pObjectList->GetFirstObjectPosition(); 1099 m_ObjectIndex = 0; 1100 m_pRenderStatus.reset(new CPDF_RenderStatus()); 1101 m_pRenderStatus->Initialize( 1102 m_pContext, m_pDevice, NULL, NULL, NULL, NULL, m_pOptions, 1103 pItem->m_pObjectList->m_Transparency, FALSE, NULL); 1104 m_pDevice->SaveState(); 1105 m_ClipRect = m_pDevice->GetClipBox(); 1106 CFX_Matrix device2object; 1107 device2object.SetReverse(pItem->m_Matrix); 1108 device2object.TransformRect(m_ClipRect); 1109 } 1110 int objs_to_go = CPDF_ModuleMgr::Get() 1111 ->GetRenderModule() 1112 ->GetConfig() 1113 ->m_RenderStepLimit; 1114 while (m_ObjectPos) { 1115 CPDF_PageObject* pCurObj = pItem->m_pObjectList->GetObjectAt(m_ObjectPos); 1116 if (pCurObj && pCurObj->m_Left <= m_ClipRect.right && 1117 pCurObj->m_Right >= m_ClipRect.left && 1118 pCurObj->m_Bottom <= m_ClipRect.top && 1119 pCurObj->m_Top >= m_ClipRect.bottom) { 1120 if (m_pRenderStatus->ContinueSingleObject(pCurObj, &pItem->m_Matrix, 1121 pPause)) { 1122 return; 1123 } 1124 if (pCurObj->m_Type == PDFPAGE_IMAGE && 1125 m_pRenderStatus->m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) { 1126 m_pContext->GetPageCache()->CacheOptimization( 1127 m_pRenderStatus->m_Options.m_dwLimitCacheSize); 1128 } 1129 if (pCurObj->m_Type == PDFPAGE_FORM || 1130 pCurObj->m_Type == PDFPAGE_SHADING) { 1131 objs_to_go = 0; 1132 } else { 1133 objs_to_go--; 1134 } 1135 } 1136 m_ObjectIndex++; 1137 pItem->m_pObjectList->GetNextObject(m_ObjectPos); 1138 if (objs_to_go == 0) { 1139 if (pPause && pPause->NeedToPauseNow()) { 1140 return; 1141 } 1142 objs_to_go = CPDF_ModuleMgr::Get() 1143 ->GetRenderModule() 1144 ->GetConfig() 1145 ->m_RenderStepLimit; 1146 } 1147 } 1148 if (!pItem->m_pObjectList->IsParsed()) { 1149 return; 1150 } 1151 m_pRenderStatus.reset(); 1152 m_pDevice->RestoreState(); 1153 m_ObjectPos = NULL; 1154 m_PrevLastPos = NULL; 1155 if (pPause && pPause->NeedToPauseNow()) { 1156 m_LayerIndex++; 1157 return; 1158 } 1159 } 1160 m_Status = Done; 1161 } 1162 int CPDF_ProgressiveRenderer::EstimateProgress() { 1163 if (!m_pContext) { 1164 return 0; 1165 } 1166 FX_DWORD nLayers = m_pContext->m_ContentList.GetSize(); 1167 int nTotal = 0, nRendered = 0; 1168 for (FX_DWORD layer = 0; layer < nLayers; layer++) { 1169 _PDF_RenderItem* pItem = m_pContext->m_ContentList.GetDataPtr(layer); 1170 int nObjs = pItem->m_pObjectList->CountObjects(); 1171 if (layer == m_LayerIndex) { 1172 nRendered += m_ObjectIndex; 1173 } else if (layer < m_LayerIndex) { 1174 nRendered += nObjs; 1175 } 1176 nTotal += nObjs; 1177 } 1178 if (nTotal == 0) { 1179 return 0; 1180 } 1181 return 100 * nRendered / nTotal; 1182 } 1183 CPDF_TransferFunc* CPDF_DocRenderData::GetTransferFunc(CPDF_Object* pObj) { 1184 if (!pObj) 1185 return nullptr; 1186 1187 auto it = m_TransferFuncMap.find(pObj); 1188 if (it != m_TransferFuncMap.end()) { 1189 CPDF_CountedObject<CPDF_TransferFunc>* pTransferCounter = it->second; 1190 return pTransferCounter->AddRef(); 1191 } 1192 1193 std::unique_ptr<CPDF_Function> pFuncs[3]; 1194 FX_BOOL bUniTransfer = TRUE; 1195 FX_BOOL bIdentity = TRUE; 1196 if (CPDF_Array* pArray = pObj->AsArray()) { 1197 bUniTransfer = FALSE; 1198 if (pArray->GetCount() < 3) 1199 return nullptr; 1200 1201 for (FX_DWORD i = 0; i < 3; ++i) { 1202 pFuncs[2 - i].reset(CPDF_Function::Load(pArray->GetElementValue(i))); 1203 if (!pFuncs[2 - i]) 1204 return nullptr; 1205 } 1206 } else { 1207 pFuncs[0].reset(CPDF_Function::Load(pObj)); 1208 if (!pFuncs[0]) 1209 return nullptr; 1210 } 1211 CPDF_TransferFunc* pTransfer = new CPDF_TransferFunc(m_pPDFDoc); 1212 CPDF_CountedObject<CPDF_TransferFunc>* pTransferCounter = 1213 new CPDF_CountedObject<CPDF_TransferFunc>(pTransfer); 1214 m_TransferFuncMap[pObj] = pTransferCounter; 1215 static const int kMaxOutputs = 16; 1216 FX_FLOAT output[kMaxOutputs]; 1217 FXSYS_memset(output, 0, sizeof(output)); 1218 FX_FLOAT input; 1219 int noutput; 1220 for (int v = 0; v < 256; ++v) { 1221 input = (FX_FLOAT)v / 255.0f; 1222 if (bUniTransfer) { 1223 if (pFuncs[0] && pFuncs[0]->CountOutputs() <= kMaxOutputs) 1224 pFuncs[0]->Call(&input, 1, output, noutput); 1225 int o = FXSYS_round(output[0] * 255); 1226 if (o != v) 1227 bIdentity = FALSE; 1228 for (int i = 0; i < 3; ++i) { 1229 pTransfer->m_Samples[i * 256 + v] = o; 1230 } 1231 } else { 1232 for (int i = 0; i < 3; ++i) { 1233 if (pFuncs[i] && pFuncs[i]->CountOutputs() <= kMaxOutputs) { 1234 pFuncs[i]->Call(&input, 1, output, noutput); 1235 int o = FXSYS_round(output[0] * 255); 1236 if (o != v) 1237 bIdentity = FALSE; 1238 pTransfer->m_Samples[i * 256 + v] = o; 1239 } else { 1240 pTransfer->m_Samples[i * 256 + v] = v; 1241 } 1242 } 1243 } 1244 } 1245 1246 pTransfer->m_bIdentity = bIdentity; 1247 return pTransferCounter->AddRef(); 1248 } 1249 1250 void CPDF_DocRenderData::ReleaseTransferFunc(CPDF_Object* pObj) { 1251 auto it = m_TransferFuncMap.find(pObj); 1252 if (it != m_TransferFuncMap.end()) 1253 it->second->RemoveRef(); 1254 } 1255 CPDF_RenderConfig::CPDF_RenderConfig() { 1256 m_HalftoneLimit = 0; 1257 m_RenderStepLimit = 100; 1258 } 1259 CPDF_RenderConfig::~CPDF_RenderConfig() {} 1260 1261 CPDF_DeviceBuffer::CPDF_DeviceBuffer() 1262 : m_pDevice(nullptr), m_pContext(nullptr), m_pObject(nullptr) {} 1263 1264 CPDF_DeviceBuffer::~CPDF_DeviceBuffer() { 1265 } 1266 1267 FX_BOOL CPDF_DeviceBuffer::Initialize(CPDF_RenderContext* pContext, 1268 CFX_RenderDevice* pDevice, 1269 FX_RECT* pRect, 1270 const CPDF_PageObject* pObj, 1271 int max_dpi) { 1272 m_pDevice = pDevice; 1273 m_pContext = pContext; 1274 m_Rect = *pRect; 1275 m_pObject = pObj; 1276 m_Matrix.TranslateI(-pRect->left, -pRect->top); 1277 #if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_ 1278 int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE); 1279 int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE); 1280 if (horz_size && vert_size && max_dpi) { 1281 int dpih = 1282 pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10); 1283 int dpiv = 1284 pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10); 1285 if (dpih > max_dpi) { 1286 m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f); 1287 } 1288 if (dpiv > max_dpi) { 1289 m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv); 1290 } 1291 } 1292 #endif 1293 CFX_Matrix ctm = m_pDevice->GetCTM(); 1294 FX_FLOAT fScaleX = FXSYS_fabs(ctm.a); 1295 FX_FLOAT fScaleY = FXSYS_fabs(ctm.d); 1296 m_Matrix.Concat(fScaleX, 0, 0, fScaleY, 0, 0); 1297 CFX_FloatRect rect(*pRect); 1298 m_Matrix.TransformRect(rect); 1299 FX_RECT bitmap_rect = rect.GetOutterRect(); 1300 m_pBitmap.reset(new CFX_DIBitmap); 1301 m_pBitmap->Create(bitmap_rect.Width(), bitmap_rect.Height(), FXDIB_Argb); 1302 return TRUE; 1303 } 1304 void CPDF_DeviceBuffer::OutputToDevice() { 1305 if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) { 1306 if (m_Matrix.a == 1.0f && m_Matrix.d == 1.0f) { 1307 m_pDevice->SetDIBits(m_pBitmap.get(), m_Rect.left, m_Rect.top); 1308 } else { 1309 m_pDevice->StretchDIBits(m_pBitmap.get(), m_Rect.left, m_Rect.top, 1310 m_Rect.Width(), m_Rect.Height()); 1311 } 1312 } else { 1313 CFX_DIBitmap buffer; 1314 m_pDevice->CreateCompatibleBitmap(&buffer, m_pBitmap->GetWidth(), 1315 m_pBitmap->GetHeight()); 1316 m_pContext->GetBackground(&buffer, m_pObject, NULL, &m_Matrix); 1317 buffer.CompositeBitmap(0, 0, buffer.GetWidth(), buffer.GetHeight(), 1318 m_pBitmap.get(), 0, 0); 1319 m_pDevice->StretchDIBits(&buffer, m_Rect.left, m_Rect.top, m_Rect.Width(), 1320 m_Rect.Height()); 1321 } 1322 } 1323 1324 CPDF_ScaledRenderBuffer::CPDF_ScaledRenderBuffer() {} 1325 1326 CPDF_ScaledRenderBuffer::~CPDF_ScaledRenderBuffer() {} 1327 1328 #define _FPDFAPI_IMAGESIZE_LIMIT_ (30 * 1024 * 1024) 1329 FX_BOOL CPDF_ScaledRenderBuffer::Initialize(CPDF_RenderContext* pContext, 1330 CFX_RenderDevice* pDevice, 1331 const FX_RECT& pRect, 1332 const CPDF_PageObject* pObj, 1333 const CPDF_RenderOptions* pOptions, 1334 int max_dpi) { 1335 m_pDevice = pDevice; 1336 if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) { 1337 return TRUE; 1338 } 1339 m_pContext = pContext; 1340 m_Rect = pRect; 1341 m_pObject = pObj; 1342 m_Matrix.TranslateI(-pRect.left, -pRect.top); 1343 int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE); 1344 int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE); 1345 if (horz_size && vert_size && max_dpi) { 1346 int dpih = 1347 pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10); 1348 int dpiv = 1349 pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10); 1350 if (dpih > max_dpi) { 1351 m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f); 1352 } 1353 if (dpiv > max_dpi) { 1354 m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv); 1355 } 1356 } 1357 m_pBitmapDevice.reset(new CFX_FxgeDevice); 1358 FXDIB_Format dibFormat = FXDIB_Rgb; 1359 int32_t bpp = 24; 1360 if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_ALPHA_OUTPUT) { 1361 dibFormat = FXDIB_Argb; 1362 bpp = 32; 1363 } 1364 CFX_FloatRect rect; 1365 int32_t iWidth, iHeight, iPitch; 1366 while (1) { 1367 rect = pRect; 1368 m_Matrix.TransformRect(rect); 1369 FX_RECT bitmap_rect = rect.GetOutterRect(); 1370 iWidth = bitmap_rect.Width(); 1371 iHeight = bitmap_rect.Height(); 1372 iPitch = (iWidth * bpp + 31) / 32 * 4; 1373 if (iWidth * iHeight < 1) { 1374 return FALSE; 1375 } 1376 if (iPitch * iHeight <= _FPDFAPI_IMAGESIZE_LIMIT_ && 1377 m_pBitmapDevice->Create(iWidth, iHeight, dibFormat)) { 1378 break; 1379 } 1380 m_Matrix.Scale(0.5f, 0.5f); 1381 } 1382 m_pContext->GetBackground(m_pBitmapDevice->GetBitmap(), m_pObject, pOptions, 1383 &m_Matrix); 1384 return TRUE; 1385 } 1386 void CPDF_ScaledRenderBuffer::OutputToDevice() { 1387 if (m_pBitmapDevice) { 1388 m_pDevice->StretchDIBits(m_pBitmapDevice->GetBitmap(), m_Rect.left, 1389 m_Rect.top, m_Rect.Width(), m_Rect.Height()); 1390 } 1391 } 1392 FX_BOOL IPDF_OCContext::CheckObjectVisible(const CPDF_PageObject* pObj) { 1393 const CPDF_ContentMarkData* pData = pObj->m_ContentMark; 1394 int nItems = pData->CountItems(); 1395 for (int i = 0; i < nItems; i++) { 1396 CPDF_ContentMarkItem& item = pData->GetItem(i); 1397 if (item.GetName() == "OC" && 1398 item.GetParamType() == CPDF_ContentMarkItem::PropertiesDict) { 1399 CPDF_Dictionary* pOCG = 1400 ToDictionary(static_cast<CPDF_Object*>(item.GetParam())); 1401 if (!CheckOCGVisible(pOCG)) { 1402 return FALSE; 1403 } 1404 } 1405 } 1406 return TRUE; 1407 } 1408
