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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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