// 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_FPDFAPI_PAGE_CPDF_OCCONTEXT_H_ #define CORE_FPDFAPI_PAGE_CPDF_OCCONTEXT_H_ #include <map> #include "core/fxcrt/fx_string.h" #include "core/fxcrt/retain_ptr.h" class CPDF_Array; class CPDF_Dictionary; class CPDF_Document; class CPDF_PageObject; class CPDF_OCContext final : public Retainable { public: enum UsageType { View = 0, Design, Print, Export }; template <typename T, typename... Args> friend RetainPtr<T> pdfium::MakeRetain(Args&&... args); bool CheckOCGVisible(const CPDF_Dictionary* pOCGDict) const; bool CheckObjectVisible(const CPDF_PageObject* pObj) const; private: CPDF_OCContext(CPDF_Document* pDoc, UsageType eUsageType); ~CPDF_OCContext() override; bool LoadOCGStateFromConfig(const ByteString& csConfig, const CPDF_Dictionary* pOCGDict) const; bool LoadOCGState(const CPDF_Dictionary* pOCGDict) const; bool GetOCGVisible(const CPDF_Dictionary* pOCGDict) const; bool GetOCGVE(const CPDF_Array* pExpression, int nLevel) const; bool LoadOCMDState(const CPDF_Dictionary* pOCMDDict) const; UnownedPtr<CPDF_Document> const m_pDocument; const UsageType m_eUsageType; mutable std::map<const CPDF_Dictionary*, bool> m_OGCStateCache; }; #endif // CORE_FPDFAPI_PAGE_CPDF_OCCONTEXT_H_