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      1 // Copyright 2014 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #ifndef _FPDF_TAGGED_H_
      8 #define _FPDF_TAGGED_H_
      9 class CPDF_StructTree;
     10 class CPDF_StructElement;
     11 struct CPDF_StructKid;
     12 class CPDF_Document;
     13 class CPDF_Page;
     14 class IPDF_ReflowEngine;
     15 class IPDF_ReflowedPage;
     16 class CPDF_StructTree : public CFX_Object
     17 {
     18 public:
     19 
     20     static CPDF_StructTree* LoadDoc(const CPDF_Document* pDoc);
     21 
     22     static CPDF_StructTree* LoadPage(const CPDF_Document* pDoc, const CPDF_Dictionary* pPageDict);
     23 
     24     virtual ~CPDF_StructTree() {}
     25 
     26     virtual int			CountTopElements() const = 0;
     27 
     28     virtual CPDF_StructElement*	GetTopElement(int i) const = 0;
     29 };
     30 struct CPDF_StructKid {
     31     enum {
     32         Invalid,
     33         Element,
     34         PageContent,
     35         StreamContent,
     36         Object
     37     } m_Type;
     38 
     39     union {
     40         struct {
     41 
     42             CPDF_StructElement*	m_pElement;
     43 
     44             CPDF_Dictionary*	m_pDict;
     45         } m_Element;
     46         struct {
     47 
     48             FX_DWORD			m_PageObjNum;
     49 
     50             FX_DWORD			m_ContentId;
     51         } m_PageContent;
     52         struct {
     53 
     54             FX_DWORD			m_PageObjNum;
     55 
     56             FX_DWORD			m_ContentId;
     57 
     58             FX_DWORD			m_RefObjNum;
     59         } m_StreamContent;
     60         struct {
     61 
     62             FX_DWORD			m_PageObjNum;
     63 
     64             FX_DWORD			m_RefObjNum;
     65         } m_Object;
     66     };
     67 };
     68 class CPDF_StructElement : public CFX_Object
     69 {
     70 public:
     71 
     72     virtual CPDF_StructTree*	GetTree() const = 0;
     73 
     74     virtual const CFX_ByteString&	GetType() const = 0;
     75 
     76     virtual CPDF_StructElement*	GetParent() const = 0;
     77 
     78     virtual CPDF_Dictionary *	GetDict() const = 0;
     79 
     80     virtual int					CountKids() const = 0;
     81 
     82     virtual const CPDF_StructKid&	GetKid(int index) const = 0;
     83 
     84     virtual CFX_PtrArray*		GetObjectArray() = 0;
     85 
     86     virtual CPDF_Object*		GetAttr(FX_BSTR owner, FX_BSTR name, FX_BOOL bInheritable = FALSE, FX_FLOAT fLevel = 0.0F) = 0;
     87 
     88 
     89 
     90     virtual CFX_ByteString		GetName(FX_BSTR owner, FX_BSTR name, FX_BSTR default_value, FX_BOOL bInheritable = FALSE, int subindex = -1) = 0;
     91 
     92     virtual FX_ARGB				GetColor(FX_BSTR owner, FX_BSTR name, FX_ARGB default_value, FX_BOOL bInheritable = FALSE, int subindex = -1) = 0;
     93 
     94     virtual FX_FLOAT			GetNumber(FX_BSTR owner, FX_BSTR name, FX_FLOAT default_value, FX_BOOL bInheritable = FALSE, int subindex = -1) = 0;
     95 
     96     virtual int					GetInteger(FX_BSTR owner, FX_BSTR name, int default_value, FX_BOOL bInheritable = FALSE, int subindex = -1) = 0;
     97 
     98 };
     99 #endif
    100