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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 #ifndef CORE_FPDFDOC_INCLUDE_CPDF_OCCONTEXT_H_ | |
| 8 #define CORE_FPDFDOC_INCLUDE_CPDF_OCCONTEXT_H_ | |
| 9 | |
| 10 #include <unordered_map> | |
| 11 | |
| 12 #include "core/fxcrt/include/fx_string.h" | |
| 13 | |
| 14 class CPDF_Array; | |
| 15 class CPDF_Dictionary; | |
| 16 class CPDF_Document; | |
| 17 class CPDF_PageObject; | |
| 18 | |
| 19 class CPDF_OCContext { | |
| 20 public: | |
| 21 enum UsageType { View = 0, Design, Print, Export }; | |
| 22 | |
| 23 CPDF_OCContext(CPDF_Document* pDoc, UsageType eUsageType); | |
| 24 ~CPDF_OCContext(); | |
| 25 | |
| 26 bool CheckOCGVisible(const CPDF_Dictionary* pOCGDict); | |
| 27 bool CheckObjectVisible(const CPDF_PageObject* pObj); | |
| 28 | |
| 29 private: | |
| 30 bool LoadOCGStateFromConfig(const CFX_ByteString& csConfig, | |
| 31 const CPDF_Dictionary* pOCGDict) const; | |
| 32 bool LoadOCGState(const CPDF_Dictionary* pOCGDict) const; | |
| 33 bool GetOCGVisible(const CPDF_Dictionary* pOCGDict); | |
| 34 bool GetOCGVE(CPDF_Array* pExpression, int nLevel); | |
| 35 bool LoadOCMDState(const CPDF_Dictionary* pOCMDDict); | |
| 36 | |
| 37 CPDF_Document* const m_pDocument; | |
| 38 const UsageType m_eUsageType; | |
| 39 std::unordered_map<const CPDF_Dictionary*, bool> m_OCGStates; | |
| 40 }; | |
| 41 | |
| 42 #endif // CORE_FPDFDOC_INCLUDE_CPDF_OCCONTEXT_H_ | |
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