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Side by Side Diff: core/fpdfapi/parser/cpdf_document.h

Issue 2470803003: Traverse PDF page tree only once in CPDF_Document Try 3 (Closed)
Patch Set: Rebase and test Created 4 years, 1 month ago
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1 // Copyright 2016 PDFium Authors. All rights reserved. 1 // Copyright 2016 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 6
7 #ifndef CORE_FPDFAPI_PARSER_CPDF_DOCUMENT_H_ 7 #ifndef CORE_FPDFAPI_PARSER_CPDF_DOCUMENT_H_
8 #define CORE_FPDFAPI_PARSER_CPDF_DOCUMENT_H_ 8 #define CORE_FPDFAPI_PARSER_CPDF_DOCUMENT_H_
9 9
10 #include <functional> 10 #include <functional>
(...skipping 87 matching lines...) Expand 10 before | Expand all | Expand 10 after
98 FX_BOOL bVert, 98 FX_BOOL bVert,
99 FX_BOOL bTranslateName = FALSE); 99 FX_BOOL bTranslateName = FALSE);
100 CPDF_Font* AddWindowsFont(LOGFONTW* pLogFont, 100 CPDF_Font* AddWindowsFont(LOGFONTW* pLogFont,
101 FX_BOOL bVert, 101 FX_BOOL bVert,
102 FX_BOOL bTranslateName = FALSE); 102 FX_BOOL bTranslateName = FALSE);
103 #endif 103 #endif
104 104
105 protected: 105 protected:
106 // Retrieve page count information by getting count value from the tree nodes 106 // Retrieve page count information by getting count value from the tree nodes
107 int RetrievePageCount() const; 107 int RetrievePageCount() const;
108 CPDF_Dictionary* FindPDFPage(CPDF_Dictionary* pPages, 108 CPDF_Dictionary* TraversePDFPages(int iPage, int& nPagesToGo, int level);
109 int iPage,
110 int nPagesToGo,
111 int level);
112 int FindPageIndex(CPDF_Dictionary* pNode, 109 int FindPageIndex(CPDF_Dictionary* pNode,
113 uint32_t& skip_count, 110 uint32_t& skip_count,
114 uint32_t objnum, 111 uint32_t objnum,
115 int& index, 112 int& index,
116 int level = 0); 113 int level = 0);
117 CPDF_Object* ParseIndirectObject(uint32_t objnum) override; 114 CPDF_Object* ParseIndirectObject(uint32_t objnum) override;
118 void LoadDocInternal(); 115 void LoadDocInternal();
119 size_t CalculateEncodingDict(int charset, CPDF_Dictionary* pBaseDict); 116 size_t CalculateEncodingDict(int charset, CPDF_Dictionary* pBaseDict);
120 CPDF_Dictionary* GetPagesDict() const; 117 CPDF_Dictionary* GetPagesDict() const;
121 CPDF_Dictionary* ProcessbCJK( 118 CPDF_Dictionary* ProcessbCJK(
122 CPDF_Dictionary* pBaseDict, 119 CPDF_Dictionary* pBaseDict,
123 int charset, 120 int charset,
124 FX_BOOL bVert, 121 FX_BOOL bVert,
125 CFX_ByteString basefont, 122 CFX_ByteString basefont,
126 std::function<void(FX_WCHAR, FX_WCHAR, CPDF_Array*)> Insert); 123 std::function<void(FX_WCHAR, FX_WCHAR, CPDF_Array*)> Insert);
124 int InsertDeletePDFPage(CPDF_Dictionary* pPages,
125 int nPagesToGo,
126 CPDF_Dictionary* pPage,
127 FX_BOOL bInsert,
128 std::set<CPDF_Dictionary*>* pVisited);
129 int InsertNewPage(int iPage,
130 CPDF_Dictionary* pPageDict,
131 CFX_ArrayTemplate<uint32_t>& pageList);
127 132
128 std::unique_ptr<CPDF_Parser> m_pParser; 133 std::unique_ptr<CPDF_Parser> m_pParser;
129 CPDF_Dictionary* m_pRootDict; 134 CPDF_Dictionary* m_pRootDict;
130 CPDF_Dictionary* m_pInfoDict; 135 CPDF_Dictionary* m_pInfoDict;
136 // Vector of nodes to know current position in the page tree. Int is the index
137 // of the child being processed.
138 std::vector<std::pair<CPDF_Dictionary*, int>> m_pTreeTraversal;
139 // Index of last page (leaf) processed from page tree.
140 int m_iLastPageTraversed;
131 bool m_bLinearized; 141 bool m_bLinearized;
132 int m_iFirstPageNo; 142 int m_iFirstPageNo;
133 uint32_t m_dwFirstPageObjNum; 143 uint32_t m_dwFirstPageObjNum;
134 // TODO(thestig): Figure out why this cannot be a std::unique_ptr. 144 // TODO(thestig): Figure out why this cannot be a std::unique_ptr.
135 CPDF_DocPageData* m_pDocPage; 145 CPDF_DocPageData* m_pDocPage;
136 std::unique_ptr<CPDF_DocRenderData> m_pDocRender; 146 std::unique_ptr<CPDF_DocRenderData> m_pDocRender;
137 std::unique_ptr<JBig2_DocumentContext> m_pCodecContext; 147 std::unique_ptr<JBig2_DocumentContext> m_pCodecContext;
138 std::unique_ptr<CPDF_LinkList> m_pLinksContext; 148 std::unique_ptr<CPDF_LinkList> m_pLinksContext;
139 CFX_ArrayTemplate<uint32_t> m_PageList; 149 CFX_ArrayTemplate<uint32_t> m_PageList;
140 CFX_WeakPtr<CFX_ByteStringPool> m_pByteStringPool; 150 CFX_WeakPtr<CFX_ByteStringPool> m_pByteStringPool;
141 }; 151 };
142 152
143 #endif // CORE_FPDFAPI_PARSER_CPDF_DOCUMENT_H_ 153 #endif // CORE_FPDFAPI_PARSER_CPDF_DOCUMENT_H_
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