| // Copyright 2016 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #ifndef CORE_FPDFDOC_CPDF_OCCONTEXT_H_ |
| #define CORE_FPDFDOC_CPDF_OCCONTEXT_H_ |
| |
| #include <map> |
| |
| #include "core/fxcrt/cfx_retain_ptr.h" |
| #include "core/fxcrt/fx_string.h" |
| |
| class CPDF_Array; |
| class CPDF_Dictionary; |
| class CPDF_Document; |
| class CPDF_PageObject; |
| |
| class CPDF_OCContext : public CFX_Retainable { |
| public: |
| template <typename T, typename... Args> |
| friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args); |
| |
| enum UsageType { View = 0, Design, Print, Export }; |
| |
| bool CheckOCGVisible(const CPDF_Dictionary* pOCGDict); |
| bool CheckObjectVisible(const CPDF_PageObject* pObj); |
| |
| private: |
| CPDF_OCContext(CPDF_Document* pDoc, UsageType eUsageType); |
| ~CPDF_OCContext() override; |
| |
| bool LoadOCGStateFromConfig(const CFX_ByteString& csConfig, |
| const CPDF_Dictionary* pOCGDict) const; |
| bool LoadOCGState(const CPDF_Dictionary* pOCGDict) const; |
| bool GetOCGVisible(const CPDF_Dictionary* pOCGDict); |
| bool GetOCGVE(CPDF_Array* pExpression, int nLevel); |
| bool LoadOCMDState(const CPDF_Dictionary* pOCMDDict); |
| |
| CFX_UnownedPtr<CPDF_Document> const m_pDocument; |
| const UsageType m_eUsageType; |
| std::map<const CPDF_Dictionary*, bool> m_OCGStates; |
| }; |
| |
| #endif // CORE_FPDFDOC_CPDF_OCCONTEXT_H_ |