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// Copyright 2016 The PDFium Authors
// 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 <functional>
#include <map>
#include "core/fxcrt/bytestring.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxcrt/unowned_ptr.h"
class CPDF_Array;
class CPDF_Dictionary;
class CPDF_Document;
class CPDF_PageObject;
class CPDF_OCContext final : public Retainable {
public:
enum UsageType { kView = 0, kDesign, kPrint, kExport };
CONSTRUCT_VIA_MAKE_RETAIN;
bool CheckOCGDictVisible(const CPDF_Dictionary* pOCGDict) const;
bool CheckPageObjectVisible(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<RetainPtr<const CPDF_Dictionary>, bool, std::less<>>
m_OGCStateCache;
};
#endif // CORE_FPDFAPI_PAGE_CPDF_OCCONTEXT_H_