summaryrefslogtreecommitdiff
path: root/xfa/fxfa/cxfa_textparser.h
blob: 591606074ed2bda6ff5c9d06bd7d115079a5533f (plain)
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
// Copyright 2017 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 XFA_FXFA_CXFA_TEXTPARSER_H_
#define XFA_FXFA_CXFA_TEXTPARSER_H_

#include <map>
#include <memory>

#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/fx_system.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxge/fx_dib.h"
#include "third_party/base/optional.h"
#include "xfa/fxfa/fxfa_basic.h"

class CFGAS_GEFont;
class CFX_CSSComputedStyle;
class CFX_CSSStyleSelector;
class CFX_CSSStyleSheet;
class CFX_XMLNode;
class CXFA_FFDoc;
class CXFA_TextParseContext;
class CXFA_TextProvider;
class CXFA_TextTabstopsContext;

class CXFA_TextParser {
 public:
  CXFA_TextParser();
  virtual ~CXFA_TextParser();

  void Reset();
  void DoParse(CFX_XMLNode* pXMLContainer, CXFA_TextProvider* pTextProvider);

  RetainPtr<CFX_CSSComputedStyle> CreateRootStyle(
      CXFA_TextProvider* pTextProvider);
  RetainPtr<CFX_CSSComputedStyle> ComputeStyle(
      CFX_XMLNode* pXMLNode,
      CFX_CSSComputedStyle* pParentStyle);

  bool IsParsed() const { return m_bParsed; }

  XFA_AttributeEnum GetVAlign(CXFA_TextProvider* pTextProvider) const;

  float GetTabInterval(CFX_CSSComputedStyle* pStyle) const;
  int32_t CountTabs(CFX_CSSComputedStyle* pStyle) const;

  bool IsSpaceRun(CFX_CSSComputedStyle* pStyle) const;
  bool GetTabstops(CFX_CSSComputedStyle* pStyle,
                   CXFA_TextTabstopsContext* pTabstopContext);

  RetainPtr<CFGAS_GEFont> GetFont(CXFA_FFDoc* doc,
                                  CXFA_TextProvider* pTextProvider,
                                  CFX_CSSComputedStyle* pStyle) const;
  float GetFontSize(CXFA_TextProvider* pTextProvider,
                    CFX_CSSComputedStyle* pStyle) const;

  int32_t GetHorScale(CXFA_TextProvider* pTextProvider,
                      CFX_CSSComputedStyle* pStyle,
                      CFX_XMLNode* pXMLNode) const;
  int32_t GetVerScale(CXFA_TextProvider* pTextProvider,
                      CFX_CSSComputedStyle* pStyle) const;

  void GetUnderline(CXFA_TextProvider* pTextProvider,
                    CFX_CSSComputedStyle* pStyle,
                    int32_t& iUnderline,
                    XFA_AttributeEnum& iPeriod) const;
  void GetLinethrough(CXFA_TextProvider* pTextProvider,
                      CFX_CSSComputedStyle* pStyle,
                      int32_t& iLinethrough) const;
  FX_ARGB GetColor(CXFA_TextProvider* pTextProvider,
                   CFX_CSSComputedStyle* pStyle) const;
  float GetBaseline(CXFA_TextProvider* pTextProvider,
                    CFX_CSSComputedStyle* pStyle) const;
  float GetLineHeight(CXFA_TextProvider* pTextProvider,
                      CFX_CSSComputedStyle* pStyle,
                      bool bFirst,
                      float fVerScale) const;

  Optional<WideString> GetEmbeddedObj(CXFA_TextProvider* pTextProvider,
                                      CFX_XMLNode* pXMLNode);
  CXFA_TextParseContext* GetParseContextFromMap(CFX_XMLNode* pXMLNode);

 protected:
  bool TagValidate(const WideString& str) const;

 private:
  class TagProvider {
   public:
    TagProvider();
    ~TagProvider();

    WideString GetTagName() { return m_wsTagName; }

    void SetTagName(const WideString& wsName) { m_wsTagName = wsName; }
    void SetAttribute(const WideString& wsAttr, const WideString& wsValue) {
      m_Attributes.insert({wsAttr, wsValue});
    }

    WideString GetAttribute(const WideString& wsAttr) {
      return m_Attributes[wsAttr];
    }

    bool m_bTagAvailable;
    bool m_bContent;

   private:
    WideString m_wsTagName;
    std::map<WideString, WideString> m_Attributes;
  };

  void InitCSSData(CXFA_TextProvider* pTextProvider);
  void ParseRichText(CFX_XMLNode* pXMLNode, CFX_CSSComputedStyle* pParentStyle);
  std::unique_ptr<TagProvider> ParseTagInfo(CFX_XMLNode* pXMLNode);
  std::unique_ptr<CFX_CSSStyleSheet> LoadDefaultSheetStyle();
  RetainPtr<CFX_CSSComputedStyle> CreateStyle(
      CFX_CSSComputedStyle* pParentStyle);

  bool m_bParsed;
  bool m_cssInitialized;
  std::unique_ptr<CFX_CSSStyleSelector> m_pSelector;
  std::map<CFX_XMLNode*, std::unique_ptr<CXFA_TextParseContext>>
      m_mapXMLNodeToParseContext;
};

#endif  // XFA_FXFA_CXFA_TEXTPARSER_H_