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| 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/fpdf_page/cpdf_pageobjectholder.h" | |
| 8 | |
| 9 #include "core/fpdfapi/fpdf_page/cpdf_pageobject.h" | |
| 10 #include "core/fpdfapi/fpdf_page/pageint.h" | |
| 11 #include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h" | |
| 12 | |
| 13 CPDF_PageObjectHolder::CPDF_PageObjectHolder() | |
| 14 : m_pFormDict(nullptr), | |
| 15 m_pFormStream(nullptr), | |
| 16 m_pDocument(nullptr), | |
| 17 m_pPageResources(nullptr), | |
| 18 m_pResources(nullptr), | |
| 19 m_Transparency(0), | |
| 20 m_bBackgroundAlphaNeeded(FALSE), | |
| 21 m_bHasImageMask(FALSE), | |
| 22 m_ParseState(CONTENT_NOT_PARSED) {} | |
| 23 | |
| 24 CPDF_PageObjectHolder::~CPDF_PageObjectHolder() {} | |
| 25 | |
| 26 void CPDF_PageObjectHolder::ContinueParse(IFX_Pause* pPause) { | |
| 27 if (!m_pParser) { | |
| 28 return; | |
| 29 } | |
| 30 m_pParser->Continue(pPause); | |
| 31 if (m_pParser->GetStatus() == CPDF_ContentParser::Done) { | |
| 32 m_ParseState = CONTENT_PARSED; | |
| 33 m_pParser.reset(); | |
| 34 } | |
| 35 } | |
| 36 | |
| 37 void CPDF_PageObjectHolder::Transform(const CFX_Matrix& matrix) { | |
| 38 for (auto& pObj : m_PageObjectList) | |
| 39 pObj->Transform(matrix); | |
| 40 } | |
| 41 | |
| 42 CFX_FloatRect CPDF_PageObjectHolder::CalcBoundingBox() const { | |
| 43 if (m_PageObjectList.empty()) | |
| 44 return CFX_FloatRect(0, 0, 0, 0); | |
| 45 | |
| 46 FX_FLOAT left = 1000000.0f; | |
| 47 FX_FLOAT right = -1000000.0f; | |
| 48 FX_FLOAT bottom = 1000000.0f; | |
| 49 FX_FLOAT top = -1000000.0f; | |
| 50 for (const auto& pObj : m_PageObjectList) { | |
| 51 left = std::min(left, pObj->m_Left); | |
| 52 right = std::max(right, pObj->m_Right); | |
| 53 bottom = std::min(bottom, pObj->m_Bottom); | |
| 54 top = std::max(top, pObj->m_Top); | |
| 55 } | |
| 56 return CFX_FloatRect(left, bottom, right, top); | |
| 57 } | |
| 58 | |
| 59 void CPDF_PageObjectHolder::LoadTransInfo() { | |
| 60 if (!m_pFormDict) { | |
| 61 return; | |
| 62 } | |
| 63 CPDF_Dictionary* pGroup = m_pFormDict->GetDictFor("Group"); | |
| 64 if (!pGroup) { | |
| 65 return; | |
| 66 } | |
| 67 if (pGroup->GetStringFor("S") != "Transparency") { | |
| 68 return; | |
| 69 } | |
| 70 m_Transparency |= PDFTRANS_GROUP; | |
| 71 if (pGroup->GetIntegerFor("I")) { | |
| 72 m_Transparency |= PDFTRANS_ISOLATED; | |
| 73 } | |
| 74 if (pGroup->GetIntegerFor("K")) { | |
| 75 m_Transparency |= PDFTRANS_KNOCKOUT; | |
| 76 } | |
| 77 } | |
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