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| 1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2016 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 | 6 |
| 7 #include "core/fpdfapi/fpdf_page/pageint.h" | 7 #include "core/fpdfapi/fpdf_page/include/cpdf_textobject.h" |
| 8 | |
| 9 #include <algorithm> | |
| 10 | |
| 11 #include "core/fpdfapi/fpdf_page/include/cpdf_form.h" | |
| 12 #include "core/fpdfapi/fpdf_page/include/cpdf_page.h" | |
| 13 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h" | |
| 14 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h" | |
| 15 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h" | |
| 16 #include "core/fpdfapi/include/cpdf_modulemgr.h" | |
| 17 #include "core/fpdfapi/ipdf_rendermodule.h" | |
| 18 #include "third_party/base/stl_util.h" | |
| 19 | |
| 20 CPDF_PageObject::CPDF_PageObject() {} | |
| 21 | |
| 22 CPDF_PageObject::~CPDF_PageObject() {} | |
| 23 | |
| 24 void CPDF_PageObject::CopyData(const CPDF_PageObject* pSrc) { | |
| 25 CopyStates(*pSrc); | |
| 26 m_Left = pSrc->m_Left; | |
| 27 m_Right = pSrc->m_Right; | |
| 28 m_Top = pSrc->m_Top; | |
| 29 m_Bottom = pSrc->m_Bottom; | |
| 30 } | |
| 31 | |
| 32 void CPDF_PageObject::TransformClipPath(CFX_Matrix& matrix) { | |
| 33 if (m_ClipPath.IsNull()) { | |
| 34 return; | |
| 35 } | |
| 36 m_ClipPath.GetModify(); | |
| 37 m_ClipPath.Transform(matrix); | |
| 38 } | |
| 39 | |
| 40 void CPDF_PageObject::TransformGeneralState(CFX_Matrix& matrix) { | |
| 41 if (m_GeneralState.IsNull()) { | |
| 42 return; | |
| 43 } | |
| 44 CPDF_GeneralStateData* pGS = m_GeneralState.GetModify(); | |
| 45 pGS->m_Matrix.Concat(matrix); | |
| 46 } | |
| 47 | |
| 48 FX_RECT CPDF_PageObject::GetBBox(const CFX_Matrix* pMatrix) const { | |
| 49 CFX_FloatRect rect(m_Left, m_Bottom, m_Right, m_Top); | |
| 50 if (pMatrix) { | |
| 51 pMatrix->TransformRect(rect); | |
| 52 } | |
| 53 return rect.GetOutterRect(); | |
| 54 } | |
| 55 | 8 |
| 56 CPDF_TextObject::CPDF_TextObject() | 9 CPDF_TextObject::CPDF_TextObject() |
| 57 : m_PosX(0), | 10 : m_PosX(0), |
| 58 m_PosY(0), | 11 m_PosY(0), |
| 59 m_nChars(0), | 12 m_nChars(0), |
| 60 m_pCharCodes(nullptr), | 13 m_pCharCodes(nullptr), |
| 61 m_pCharPos(nullptr) {} | 14 m_pCharPos(nullptr) {} |
| 62 | 15 |
| 63 CPDF_TextObject::~CPDF_TextObject() { | 16 CPDF_TextObject::~CPDF_TextObject() { |
| 64 if (m_nChars > 1) { | 17 if (m_nChars > 1) { |
| (...skipping 318 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 383 void CPDF_TextObject::SetPosition(FX_FLOAT x, FX_FLOAT y) { | 336 void CPDF_TextObject::SetPosition(FX_FLOAT x, FX_FLOAT y) { |
| 384 FX_FLOAT dx = x - m_PosX; | 337 FX_FLOAT dx = x - m_PosX; |
| 385 FX_FLOAT dy = y - m_PosY; | 338 FX_FLOAT dy = y - m_PosY; |
| 386 m_PosX = x; | 339 m_PosX = x; |
| 387 m_PosY = y; | 340 m_PosY = y; |
| 388 m_Left += dx; | 341 m_Left += dx; |
| 389 m_Right += dx; | 342 m_Right += dx; |
| 390 m_Top += dy; | 343 m_Top += dy; |
| 391 m_Bottom += dy; | 344 m_Bottom += dy; |
| 392 } | 345 } |
| 393 | |
| 394 CPDF_ShadingObject::CPDF_ShadingObject() : m_pShading(nullptr) {} | |
| 395 | |
| 396 CPDF_ShadingObject::~CPDF_ShadingObject() {} | |
| 397 | |
| 398 CPDF_ShadingObject* CPDF_ShadingObject::Clone() const { | |
| 399 CPDF_ShadingObject* obj = new CPDF_ShadingObject; | |
| 400 obj->CopyData(this); | |
| 401 | |
| 402 obj->m_pShading = m_pShading; | |
| 403 if (obj->m_pShading && obj->m_pShading->m_pDocument) { | |
| 404 CPDF_DocPageData* pDocPageData = | |
| 405 obj->m_pShading->m_pDocument->GetPageData(); | |
| 406 obj->m_pShading = (CPDF_ShadingPattern*)pDocPageData->GetPattern( | |
| 407 obj->m_pShading->m_pShadingObj, m_pShading->m_bShadingObj, | |
| 408 &obj->m_pShading->m_ParentMatrix); | |
| 409 } | |
| 410 obj->m_Matrix = m_Matrix; | |
| 411 return obj; | |
| 412 } | |
| 413 | |
| 414 void CPDF_ShadingObject::Transform(const CFX_Matrix& matrix) { | |
| 415 if (!m_ClipPath.IsNull()) { | |
| 416 m_ClipPath.GetModify(); | |
| 417 m_ClipPath.Transform(matrix); | |
| 418 } | |
| 419 m_Matrix.Concat(matrix); | |
| 420 if (!m_ClipPath.IsNull()) { | |
| 421 CalcBoundingBox(); | |
| 422 } else { | |
| 423 matrix.TransformRect(m_Left, m_Right, m_Top, m_Bottom); | |
| 424 } | |
| 425 } | |
| 426 | |
| 427 void CPDF_ShadingObject::CalcBoundingBox() { | |
| 428 if (m_ClipPath.IsNull()) { | |
| 429 return; | |
| 430 } | |
| 431 CFX_FloatRect rect = m_ClipPath.GetClipBox(); | |
| 432 m_Left = rect.left; | |
| 433 m_Bottom = rect.bottom; | |
| 434 m_Right = rect.right; | |
| 435 m_Top = rect.top; | |
| 436 } | |
| 437 | |
| 438 CPDF_FormObject::CPDF_FormObject() : m_pForm(nullptr) {} | |
| 439 | |
| 440 CPDF_FormObject::~CPDF_FormObject() { | |
| 441 delete m_pForm; | |
| 442 } | |
| 443 | |
| 444 void CPDF_FormObject::Transform(const CFX_Matrix& matrix) { | |
| 445 m_FormMatrix.Concat(matrix); | |
| 446 CalcBoundingBox(); | |
| 447 } | |
| 448 | |
| 449 CPDF_FormObject* CPDF_FormObject::Clone() const { | |
| 450 CPDF_FormObject* obj = new CPDF_FormObject; | |
| 451 obj->CopyData(this); | |
| 452 | |
| 453 obj->m_pForm = m_pForm->Clone(); | |
| 454 obj->m_FormMatrix = m_FormMatrix; | |
| 455 return obj; | |
| 456 } | |
| 457 | |
| 458 void CPDF_FormObject::CalcBoundingBox() { | |
| 459 CFX_FloatRect form_rect = m_pForm->CalcBoundingBox(); | |
| 460 form_rect.Transform(&m_FormMatrix); | |
| 461 m_Left = form_rect.left; | |
| 462 m_Bottom = form_rect.bottom; | |
| 463 m_Right = form_rect.right; | |
| 464 m_Top = form_rect.top; | |
| 465 } | |
| 466 | |
| 467 CPDF_Page::CPDF_Page() : m_pPageRender(nullptr) {} | |
| 468 | |
| 469 void CPDF_Page::Load(CPDF_Document* pDocument, | |
| 470 CPDF_Dictionary* pPageDict, | |
| 471 FX_BOOL bPageCache) { | |
| 472 m_pDocument = (CPDF_Document*)pDocument; | |
| 473 m_pFormDict = pPageDict; | |
| 474 if (bPageCache) { | |
| 475 m_pPageRender = | |
| 476 CPDF_ModuleMgr::Get()->GetRenderModule()->CreatePageCache(this); | |
| 477 } | |
| 478 if (!pPageDict) { | |
| 479 m_PageWidth = m_PageHeight = 100 * 1.0f; | |
| 480 m_pPageResources = m_pResources = NULL; | |
| 481 return; | |
| 482 } | |
| 483 CPDF_Object* pageAttr = GetPageAttr("Resources"); | |
| 484 m_pResources = pageAttr ? pageAttr->GetDict() : NULL; | |
| 485 m_pPageResources = m_pResources; | |
| 486 CPDF_Object* pRotate = GetPageAttr("Rotate"); | |
| 487 int rotate = 0; | |
| 488 if (pRotate) { | |
| 489 rotate = pRotate->GetInteger() / 90 % 4; | |
| 490 } | |
| 491 if (rotate < 0) { | |
| 492 rotate += 4; | |
| 493 } | |
| 494 CPDF_Array* pMediaBox = ToArray(GetPageAttr("MediaBox")); | |
| 495 CFX_FloatRect mediabox; | |
| 496 if (pMediaBox) { | |
| 497 mediabox = pMediaBox->GetRect(); | |
| 498 mediabox.Normalize(); | |
| 499 } | |
| 500 if (mediabox.IsEmpty()) { | |
| 501 mediabox = CFX_FloatRect(0, 0, 612, 792); | |
| 502 } | |
| 503 | |
| 504 CPDF_Array* pCropBox = ToArray(GetPageAttr("CropBox")); | |
| 505 if (pCropBox) { | |
| 506 m_BBox = pCropBox->GetRect(); | |
| 507 m_BBox.Normalize(); | |
| 508 } | |
| 509 if (m_BBox.IsEmpty()) { | |
| 510 m_BBox = mediabox; | |
| 511 } else { | |
| 512 m_BBox.Intersect(mediabox); | |
| 513 } | |
| 514 if (rotate % 2) { | |
| 515 m_PageHeight = m_BBox.right - m_BBox.left; | |
| 516 m_PageWidth = m_BBox.top - m_BBox.bottom; | |
| 517 } else { | |
| 518 m_PageWidth = m_BBox.right - m_BBox.left; | |
| 519 m_PageHeight = m_BBox.top - m_BBox.bottom; | |
| 520 } | |
| 521 switch (rotate) { | |
| 522 case 0: | |
| 523 m_PageMatrix.Set(1.0f, 0, 0, 1.0f, -m_BBox.left, -m_BBox.bottom); | |
| 524 break; | |
| 525 case 1: | |
| 526 m_PageMatrix.Set(0, -1.0f, 1.0f, 0, -m_BBox.bottom, m_BBox.right); | |
| 527 break; | |
| 528 case 2: | |
| 529 m_PageMatrix.Set(-1.0f, 0, 0, -1.0f, m_BBox.right, m_BBox.top); | |
| 530 break; | |
| 531 case 3: | |
| 532 m_PageMatrix.Set(0, 1.0f, -1.0f, 0, m_BBox.top, -m_BBox.left); | |
| 533 break; | |
| 534 } | |
| 535 m_Transparency = PDFTRANS_ISOLATED; | |
| 536 LoadTransInfo(); | |
| 537 } | |
| 538 | |
| 539 void CPDF_Page::StartParse(CPDF_ParseOptions* pOptions) { | |
| 540 if (m_ParseState == CONTENT_PARSED || m_ParseState == CONTENT_PARSING) { | |
| 541 return; | |
| 542 } | |
| 543 m_pParser.reset(new CPDF_ContentParser); | |
| 544 m_pParser->Start(this, pOptions); | |
| 545 m_ParseState = CONTENT_PARSING; | |
| 546 } | |
| 547 | |
| 548 void CPDF_Page::ParseContent(CPDF_ParseOptions* pOptions) { | |
| 549 StartParse(pOptions); | |
| 550 ContinueParse(nullptr); | |
| 551 } | |
| 552 | |
| 553 CPDF_Page::~CPDF_Page() { | |
| 554 if (m_pPageRender) { | |
| 555 IPDF_RenderModule* pModule = CPDF_ModuleMgr::Get()->GetRenderModule(); | |
| 556 pModule->DestroyPageCache(m_pPageRender); | |
| 557 } | |
| 558 } | |
| 559 | |
| 560 CPDF_Object* FPDFAPI_GetPageAttr(CPDF_Dictionary* pPageDict, | |
| 561 const CFX_ByteStringC& name) { | |
| 562 int level = 0; | |
| 563 while (1) { | |
| 564 CPDF_Object* pObj = pPageDict->GetElementValue(name); | |
| 565 if (pObj) { | |
| 566 return pObj; | |
| 567 } | |
| 568 CPDF_Dictionary* pParent = pPageDict->GetDictBy("Parent"); | |
| 569 if (!pParent || pParent == pPageDict) { | |
| 570 return NULL; | |
| 571 } | |
| 572 pPageDict = pParent; | |
| 573 level++; | |
| 574 if (level == 1000) { | |
| 575 return NULL; | |
| 576 } | |
| 577 } | |
| 578 } | |
| 579 | |
| 580 CPDF_Object* CPDF_Page::GetPageAttr(const CFX_ByteStringC& name) const { | |
| 581 return FPDFAPI_GetPageAttr(m_pFormDict, name); | |
| 582 } | |
| 583 | |
| 584 void CPDF_Page::GetDisplayMatrix(CFX_Matrix& matrix, | |
| 585 int xPos, | |
| 586 int yPos, | |
| 587 int xSize, | |
| 588 int ySize, | |
| 589 int iRotate) const { | |
| 590 if (m_PageWidth == 0 || m_PageHeight == 0) { | |
| 591 return; | |
| 592 } | |
| 593 CFX_Matrix display_matrix; | |
| 594 int x0, y0, x1, y1, x2, y2; | |
| 595 iRotate %= 4; | |
| 596 switch (iRotate) { | |
| 597 case 0: | |
| 598 x0 = xPos; | |
| 599 y0 = yPos + ySize; | |
| 600 x1 = xPos; | |
| 601 y1 = yPos; | |
| 602 x2 = xPos + xSize; | |
| 603 y2 = yPos + ySize; | |
| 604 break; | |
| 605 case 1: | |
| 606 x0 = xPos; | |
| 607 y0 = yPos; | |
| 608 x1 = xPos + xSize; | |
| 609 y1 = yPos; | |
| 610 x2 = xPos; | |
| 611 y2 = yPos + ySize; | |
| 612 break; | |
| 613 case 2: | |
| 614 x0 = xPos + xSize; | |
| 615 y0 = yPos; | |
| 616 x1 = xPos + xSize; | |
| 617 y1 = yPos + ySize; | |
| 618 x2 = xPos; | |
| 619 y2 = yPos; | |
| 620 break; | |
| 621 case 3: | |
| 622 x0 = xPos + xSize; | |
| 623 y0 = yPos + ySize; | |
| 624 x1 = xPos; | |
| 625 y1 = yPos + ySize; | |
| 626 x2 = xPos + xSize; | |
| 627 y2 = yPos; | |
| 628 break; | |
| 629 } | |
| 630 display_matrix.Set( | |
| 631 ((FX_FLOAT)(x2 - x0)) / m_PageWidth, ((FX_FLOAT)(y2 - y0)) / m_PageWidth, | |
| 632 ((FX_FLOAT)(x1 - x0)) / m_PageHeight, | |
| 633 ((FX_FLOAT)(y1 - y0)) / m_PageHeight, (FX_FLOAT)x0, (FX_FLOAT)y0); | |
| 634 matrix = m_PageMatrix; | |
| 635 matrix.Concat(display_matrix); | |
| 636 } | |
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