78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
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// Copyright 2017 The PDFium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FPDFDOC_CPDF_STRUCTELEMENT_H_
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#define CORE_FPDFDOC_CPDF_STRUCTELEMENT_H_
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#include <vector>
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#include "core/fxcrt/fx_string.h"
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#include "core/fxcrt/retain_ptr.h"
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#include "core/fxcrt/unowned_ptr.h"
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#include "third_party/abseil-cpp/absl/types/optional.h"
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class CPDF_Dictionary;
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class CPDF_Object;
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class CPDF_StructTree;
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class CPDF_StructElement final : public Retainable {
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public:
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CONSTRUCT_VIA_MAKE_RETAIN;
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ByteString GetType() const { return m_Type; }
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ByteString GetObjType() const;
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WideString GetAltText() const;
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WideString GetActualText() const;
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WideString GetTitle() const;
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absl::optional<WideString> GetID() const;
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absl::optional<WideString> GetLang() const;
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RetainPtr<const CPDF_Object> GetA() const;
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RetainPtr<const CPDF_Object> GetK() const;
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size_t CountKids() const;
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CPDF_StructElement* GetKidIfElement(size_t index) const;
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bool UpdateKidIfElement(const CPDF_Dictionary* pDict,
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CPDF_StructElement* pElement);
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CPDF_StructElement* GetParent() const { return m_pParentElement; }
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void SetParent(CPDF_StructElement* pParentElement) {
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m_pParentElement = pParentElement;
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}
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private:
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struct Kid {
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enum Type { kInvalid, kElement, kPageContent, kStreamContent, kObject };
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Kid();
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Kid(const Kid& that);
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~Kid();
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Type m_Type = kInvalid;
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uint32_t m_PageObjNum = 0; // For {PageContent, StreamContent, Object}.
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uint32_t m_RefObjNum = 0; // For {StreamContent, Object} types.
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uint32_t m_ContentId = 0; // For {PageContent, StreamContent} types.
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RetainPtr<CPDF_StructElement> m_pElement; // For Element type.
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RetainPtr<const CPDF_Dictionary> m_pDict; // For Element type.
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};
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CPDF_StructElement(const CPDF_StructTree* pTree,
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RetainPtr<const CPDF_Dictionary> pDict);
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~CPDF_StructElement() override;
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void LoadKids(RetainPtr<const CPDF_Dictionary> pDict);
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void LoadKid(uint32_t PageObjNum,
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RetainPtr<const CPDF_Object> pKidObj,
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Kid* pKid);
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UnownedPtr<const CPDF_StructTree> const m_pTree;
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RetainPtr<const CPDF_Dictionary> const m_pDict;
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UnownedPtr<CPDF_StructElement> m_pParentElement;
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const ByteString m_Type;
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std::vector<Kid> m_Kids;
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};
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#endif // CORE_FPDFDOC_CPDF_STRUCTELEMENT_H_
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