1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
// 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_FPDFAPI_PARSER_CPDF_DOCUMENT_H_
#define CORE_FPDFAPI_PARSER_CPDF_DOCUMENT_H_
#include <functional>
#include <memory>
#include <set>
#include <utility>
#include <vector>
#include "core/fpdfapi/page/cpdf_image.h"
#include "core/fpdfapi/page/cpdf_page.h"
#include "core/fpdfapi/parser/cpdf_indirect_object_holder.h"
#include "core/fpdfapi/parser/cpdf_object.h"
#include "core/fpdfdoc/cpdf_linklist.h"
class CFX_Font;
class CFX_Matrix;
class CPDF_ColorSpace;
class CPDF_DocPageData;
class CPDF_DocRenderData;
class CPDF_Font;
class CPDF_FontEncoding;
class CPDF_IccProfile;
class CPDF_LinearizedHeader;
class CPDF_Parser;
class CPDF_Pattern;
class CPDF_StreamAcc;
class JBig2_DocumentContext;
#define FPDFPERM_MODIFY 0x0008
#define FPDFPERM_ANNOT_FORM 0x0020
#define FPDFPERM_FILL_FORM 0x0100
#define FPDFPERM_EXTRACT_ACCESS 0x0200
class CPDF_Document : public CPDF_IndirectObjectHolder {
public:
// Type from which the XFA extension can subclass itself.
class Extension {
public:
virtual ~Extension() {}
virtual CPDF_Document* GetPDFDoc() const = 0;
virtual int GetPageCount() const = 0;
virtual void DeletePage(int page_index) = 0;
virtual uint32_t GetUserPermissions() const = 0;
};
static const int kPageMaxNum = 0xFFFFF;
explicit CPDF_Document(std::unique_ptr<CPDF_Parser> pParser);
~CPDF_Document() override;
Extension* GetExtension() const { return m_pExtension.get(); }
void SetExtension(std::unique_ptr<Extension> pExt) {
m_pExtension = std::move(pExt);
}
CPDF_Parser* GetParser() const { return m_pParser.get(); }
const CPDF_Dictionary* GetRoot() const { return m_pRootDict; }
CPDF_Dictionary* GetRoot() { return m_pRootDict; }
CPDF_Dictionary* GetInfo();
void DeletePage(int iPage);
int GetPageCount() const;
bool IsPageLoaded(int iPage) const;
CPDF_Dictionary* GetPageDictionary(int iPage);
int GetPageIndex(uint32_t objnum);
uint32_t GetUserPermissions() const;
// Returns a valid pointer, unless it is called during destruction.
CPDF_DocPageData* GetPageData() const { return m_pDocPage.get(); }
void SetPageObjNum(int iPage, uint32_t objNum);
std::unique_ptr<JBig2_DocumentContext>* CodecContext() {
return &m_pCodecContext;
}
std::unique_ptr<CPDF_LinkList>* LinksContext() { return &m_pLinksContext; }
CPDF_DocRenderData* GetRenderData() const { return m_pDocRender.get(); }
// |pFontDict| must not be null.
CPDF_Font* LoadFont(CPDF_Dictionary* pFontDict);
CPDF_ColorSpace* LoadColorSpace(const CPDF_Object* pCSObj,
const CPDF_Dictionary* pResources = nullptr);
CPDF_Pattern* LoadPattern(CPDF_Object* pObj,
bool bShading,
const CFX_Matrix& matrix);
RetainPtr<CPDF_Image> LoadImageFromPageData(uint32_t dwStreamObjNum);
RetainPtr<CPDF_StreamAcc> LoadFontFile(const CPDF_Stream* pStream);
RetainPtr<CPDF_IccProfile> LoadIccProfile(const CPDF_Stream* pStream);
void LoadDoc();
void LoadLinearizedDoc(const CPDF_LinearizedHeader* pLinearizationParams);
void LoadPages();
void CreateNewDoc();
CPDF_Dictionary* CreateNewPage(int iPage);
void IncrementParsedPageCount() { ++m_ParsedPageCount; }
uint32_t GetParsedPageCountForTesting() { return m_ParsedPageCount; }
CPDF_Font* AddStandardFont(const char* font, CPDF_FontEncoding* pEncoding);
CPDF_Font* AddFont(CFX_Font* pFont, int charset, bool bVert);
#if _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_
CPDF_Font* AddWindowsFont(LOGFONTA* pLogFont,
bool bVert,
bool bTranslateName = false);
CPDF_Font* AddWindowsFont(LOGFONTW* pLogFont,
bool bVert,
bool bTranslateName = false);
#endif
protected:
// Retrieve page count information by getting count value from the tree nodes
int RetrievePageCount();
// When this method is called, m_pTreeTraversal[level] exists.
CPDF_Dictionary* TraversePDFPages(int iPage, int* nPagesToGo, size_t level);
int FindPageIndex(const CPDF_Dictionary* pNode,
uint32_t* skip_count,
uint32_t objnum,
int* index,
int level = 0) const;
std::unique_ptr<CPDF_Object> ParseIndirectObject(uint32_t objnum) override;
void LoadDocInternal();
size_t CalculateEncodingDict(int charset, CPDF_Dictionary* pBaseDict);
const CPDF_Dictionary* GetPagesDict() const;
CPDF_Dictionary* GetPagesDict();
CPDF_Dictionary* ProcessbCJK(
CPDF_Dictionary* pBaseDict,
int charset,
bool bVert,
ByteString basefont,
std::function<void(wchar_t, wchar_t, CPDF_Array*)> Insert);
bool InsertDeletePDFPage(CPDF_Dictionary* pPages,
int nPagesToGo,
CPDF_Dictionary* pPageDict,
bool bInsert,
std::set<CPDF_Dictionary*>* pVisited);
bool InsertNewPage(int iPage, CPDF_Dictionary* pPageDict);
void ResetTraversal();
std::unique_ptr<CPDF_Parser> m_pParser;
// TODO(tsepez): figure out why tests break if this is an UnownedPtr.
CPDF_Dictionary* m_pRootDict; // Not owned.
UnownedPtr<CPDF_Dictionary> m_pInfoDict;
// Vector of pairs to know current position in the page tree. The index in the
// vector corresponds to the level being described. The pair contains a
// pointer to the dictionary being processed at the level, and an index of the
// of the child being processed within the dictionary's /Kids array.
std::vector<std::pair<CPDF_Dictionary*, size_t>> m_pTreeTraversal;
// Index of the next page that will be traversed from the page tree.
int m_iNextPageToTraverse;
bool m_bReachedMaxPageLevel;
bool m_bLinearized;
int m_iFirstPageNo;
uint32_t m_dwFirstPageObjNum;
uint32_t m_ParsedPageCount = 0;
std::unique_ptr<CPDF_DocPageData> m_pDocPage;
std::unique_ptr<CPDF_DocRenderData> m_pDocRender;
std::unique_ptr<JBig2_DocumentContext> m_pCodecContext;
std::unique_ptr<CPDF_LinkList> m_pLinksContext;
std::vector<uint32_t> m_PageList; // Page number to page's dict objnum.
std::unique_ptr<Extension> m_pExtension;
};
#endif // CORE_FPDFAPI_PARSER_CPDF_DOCUMENT_H_
|
