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// 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 <unordered_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);
CPDF_Document* const m_pDocument;
const UsageType m_eUsageType;
std::unordered_map<const CPDF_Dictionary*, bool> m_OCGStates;
};
#endif // CORE_FPDFDOC_CPDF_OCCONTEXT_H_
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