Remove core/include/fpdfdoc/fpdf_vt.h

This CL removes the core/include/fpdfdoc/fpdf_vt.h file. The IPDF_VariableText
class was removed in favour of the only concrete class of CPD_VariableText.

CPVT_Provider was moved to CPDF_VariableText::Provider and
CPDF_VariableText_Iterator was moved to CPDF_VariableText::Iterator.

The IFX_Edit_FontMap interface was merged into the IPVT_FontMap interface so
there is only one.

Other classes were split out as needed in order to keep things compiling.

BUG=pdfium:468

Review URL: https://codereview.chromium.org/1860063002

9 files changed, 587 insertions, 0 deletions

diff --git a/core/fpdfdoc/include/cpdf_variabletext.h b/core/fpdfdoc/include/cpdf_variabletext.h
new file mode 100644
index 0000000000..b73d3df8c1
--- /dev/null
+++ b/core/fpdfdoc/include/cpdf_variabletext.h
@@ -0,0 +1,253 @@
+// 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_FPDFDOC_INCLUDE_CPDF_VARIABLETEXT_H_
+#define CORE_FPDFDOC_INCLUDE_CPDF_VARIABLETEXT_H_
+
+#include "core/fpdfdoc/cpvt_floatrect.h"
+#include "core/fpdfdoc/cpvt_lineinfo.h"
+#include "core/fpdfdoc/include/cpvt_line.h"
+#include "core/fpdfdoc/include/cpvt_wordplace.h"
+#include "core/fpdfdoc/include/cpvt_wordrange.h"
+#include "core/fpdfdoc/pdf_vt.h"
+#include "core/fxcrt/include/fx_coordinates.h"
+#include "core/fxcrt/include/fx_string.h"
+#include "core/fxcrt/include/fx_system.h"
+
+class CSection;
+class IPVT_FontMap;
+
+struct CPVT_SecProps;
+struct CPVT_Section;
+struct CPVT_SectionInfo;
+struct CPVT_Word;
+struct CPVT_WordProps;
+struct CPVT_WordInfo;
+
+#define VARIABLETEXT_HALF 0.5f
+
+class CPDF_VariableText : private CPDF_EditContainer {
+ public:
+  enum class ScriptType { Normal, Super, Sub };
+
+  class Iterator {
+   public:
+    explicit Iterator(CPDF_VariableText* pVT);
+    ~Iterator();
+
+    FX_BOOL NextWord();
+    FX_BOOL PrevWord();
+    FX_BOOL NextLine();
+    FX_BOOL PrevLine();
+    FX_BOOL NextSection();
+    FX_BOOL PrevSection();
+    FX_BOOL SetWord(const CPVT_Word& word);
+    FX_BOOL GetWord(CPVT_Word& word) const;
+    FX_BOOL GetLine(CPVT_Line& line) const;
+    FX_BOOL GetSection(CPVT_Section& section) const;
+    FX_BOOL SetSection(const CPVT_Section& section);
+    void SetAt(int32_t nWordIndex);
+    void SetAt(const CPVT_WordPlace& place);
+    const CPVT_WordPlace& GetAt() const { return m_CurPos; }
+
+   private:
+    CPVT_WordPlace m_CurPos;
+    CPDF_VariableText* const m_pVT;
+  };
+
+  class Provider {
+   public:
+    Provider(IPVT_FontMap* pFontMap);
+    virtual ~Provider();
+
+    virtual int32_t GetCharWidth(int32_t nFontIndex,
+                                 uint16_t word,
+                                 int32_t nWordStyle);
+    virtual int32_t GetTypeAscent(int32_t nFontIndex);
+    virtual int32_t GetTypeDescent(int32_t nFontIndex);
+    virtual int32_t GetWordFontIndex(uint16_t word,
+                                     int32_t charset,
+                                     int32_t nFontIndex);
+    virtual FX_BOOL IsLatinWord(uint16_t word);
+    virtual int32_t GetDefaultFontIndex();
+
+   private:
+    IPVT_FontMap* m_pFontMap;
+  };
+
+  CPDF_VariableText();
+  virtual ~CPDF_VariableText();
+
+  CPDF_VariableText::Provider* SetProvider(
+      CPDF_VariableText::Provider* pProvider);
+  CPDF_VariableText::Iterator* GetIterator();
+
+  // CPDF_EditContainer.
+  void SetPlateRect(const CFX_FloatRect& rect) override {
+    CPDF_EditContainer::SetPlateRect(rect);
+  }
+  CFX_FloatRect GetContentRect() const override;
+  const CFX_FloatRect& GetPlateRect() const override {
+    return CPDF_EditContainer::GetPlateRect();
+  }
+
+  void SetAlignment(int32_t nFormat = 0) { m_nAlignment = nFormat; }
+  void SetPasswordChar(uint16_t wSubWord = '*') { m_wSubWord = wSubWord; }
+  void SetLimitChar(int32_t nLimitChar = 0) { m_nLimitChar = nLimitChar; }
+  void SetCharSpace(FX_FLOAT fCharSpace = 0.0f) { m_fCharSpace = fCharSpace; }
+  void SetHorzScale(int32_t nHorzScale = 100) { m_nHorzScale = nHorzScale; }
+  void SetMultiLine(FX_BOOL bMultiLine = TRUE) { m_bMultiLine = bMultiLine; }
+  void SetAutoReturn(FX_BOOL bAuto = TRUE) { m_bLimitWidth = bAuto; }
+  void SetFontSize(FX_FLOAT fFontSize) { m_fFontSize = fFontSize; }
+  void SetCharArray(int32_t nCharArray = 0) { m_nCharArray = nCharArray; }
+  void SetAutoFontSize(FX_BOOL bAuto = TRUE) { m_bAutoFontSize = bAuto; }
+  void SetRichText(FX_BOOL bRichText) { m_bRichText = bRichText; }
+  void SetLineLeading(FX_FLOAT fLineLeading) { m_fLineLeading = fLineLeading; }
+  void Initialize();
+  FX_BOOL IsValid() const { return m_bInitial; }
+  FX_BOOL IsRichText() const { return m_bRichText; }
+  void RearrangeAll();
+  void RearrangePart(const CPVT_WordRange& PlaceRange);
+  void ResetAll();
+  void SetText(const FX_WCHAR* text,
+               int32_t charset = 1,
+               const CPVT_SecProps* pSecProps = NULL,
+               const CPVT_WordProps* pWordProps = NULL);
+  CPVT_WordPlace InsertWord(const CPVT_WordPlace& place,
+                            uint16_t word,
+                            int32_t charset = 1,
+                            const CPVT_WordProps* pWordProps = NULL);
+  CPVT_WordPlace InsertSection(const CPVT_WordPlace& place,
+                               const CPVT_SecProps* pSecProps = NULL,
+                               const CPVT_WordProps* pWordProps = NULL);
+  CPVT_WordPlace InsertText(const CPVT_WordPlace& place,
+                            const FX_WCHAR* text,
+                            int32_t charset = 1,
+                            const CPVT_SecProps* pSecProps = NULL,
+                            const CPVT_WordProps* pWordProps = NULL);
+  CPVT_WordPlace DeleteWords(const CPVT_WordRange& PlaceRange);
+  CPVT_WordPlace DeleteWord(const CPVT_WordPlace& place);
+  CPVT_WordPlace BackSpaceWord(const CPVT_WordPlace& place);
+
+  int32_t GetTotalWords() const;
+  FX_FLOAT GetFontSize() const { return m_fFontSize; }
+  int32_t GetAlignment() const { return m_nAlignment; }
+  uint16_t GetPasswordChar() const { return GetSubWord(); }
+  int32_t GetCharArray() const { return m_nCharArray; }
+  int32_t GetLimitChar() const { return m_nLimitChar; }
+  FX_BOOL IsMultiLine() const { return m_bMultiLine; }
+  int32_t GetHorzScale() const { return m_nHorzScale; }
+  FX_FLOAT GetCharSpace() const { return m_fCharSpace; }
+  CPVT_WordPlace GetBeginWordPlace() const;
+  CPVT_WordPlace GetEndWordPlace() const;
+  CPVT_WordPlace GetPrevWordPlace(const CPVT_WordPlace& place) const;
+  CPVT_WordPlace GetNextWordPlace(const CPVT_WordPlace& place) const;
+  CPVT_WordPlace SearchWordPlace(const CFX_FloatPoint& point) const;
+  CPVT_WordPlace GetUpWordPlace(const CPVT_WordPlace& place,
+                                const CFX_FloatPoint& point) const;
+  CPVT_WordPlace GetDownWordPlace(const CPVT_WordPlace& place,
+                                  const CFX_FloatPoint& point) const;
+  CPVT_WordPlace GetLineBeginPlace(const CPVT_WordPlace& place) const;
+  CPVT_WordPlace GetLineEndPlace(const CPVT_WordPlace& place) const;
+  CPVT_WordPlace GetSectionBeginPlace(const CPVT_WordPlace& place) const;
+  CPVT_WordPlace GetSectionEndPlace(const CPVT_WordPlace& place) const;
+  void UpdateWordPlace(CPVT_WordPlace& place) const;
+  CPVT_WordPlace AdjustLineHeader(const CPVT_WordPlace& place,
+                                  FX_BOOL bPrevOrNext) const;
+  int32_t WordPlaceToWordIndex(const CPVT_WordPlace& place) const;
+  CPVT_WordPlace WordIndexToWordPlace(int32_t index) const;
+
+  uint16_t GetSubWord() const { return m_wSubWord; }
+
+ private:
+  friend class CTypeset;
+  friend class CSection;
+
+  int32_t GetCharWidth(int32_t nFontIndex,
+                       uint16_t Word,
+                       uint16_t SubWord,
+                       int32_t nWordStyle);
+  int32_t GetTypeAscent(int32_t nFontIndex);
+  int32_t GetTypeDescent(int32_t nFontIndex);
+  int32_t GetWordFontIndex(uint16_t word, int32_t charset, int32_t nFontIndex);
+  int32_t GetDefaultFontIndex();
+  FX_BOOL IsLatinWord(uint16_t word);
+
+  CPVT_WordPlace AddSection(const CPVT_WordPlace& place,
+                            const CPVT_SectionInfo& secinfo);
+  CPVT_WordPlace AddLine(const CPVT_WordPlace& place,
+                         const CPVT_LineInfo& lineinfo);
+  CPVT_WordPlace AddWord(const CPVT_WordPlace& place,
+                         const CPVT_WordInfo& wordinfo);
+  FX_BOOL GetWordInfo(const CPVT_WordPlace& place, CPVT_WordInfo& wordinfo);
+  FX_BOOL SetWordInfo(const CPVT_WordPlace& place,
+                      const CPVT_WordInfo& wordinfo);
+  FX_BOOL GetLineInfo(const CPVT_WordPlace& place, CPVT_LineInfo& lineinfo);
+  FX_BOOL GetSectionInfo(const CPVT_WordPlace& place,
+                         CPVT_SectionInfo& secinfo);
+  FX_FLOAT GetWordFontSize(const CPVT_WordInfo& WordInfo,
+                           FX_BOOL bFactFontSize = FALSE);
+  FX_FLOAT GetWordWidth(int32_t nFontIndex,
+                        uint16_t Word,
+                        uint16_t SubWord,
+                        FX_FLOAT fCharSpace,
+                        int32_t nHorzScale,
+                        FX_FLOAT fFontSize,
+                        FX_FLOAT fWordTail,
+                        int32_t nWordStyle);
+  FX_FLOAT GetWordWidth(const CPVT_WordInfo& WordInfo);
+  FX_FLOAT GetWordAscent(const CPVT_WordInfo& WordInfo, FX_FLOAT fFontSize);
+  FX_FLOAT GetWordDescent(const CPVT_WordInfo& WordInfo, FX_FLOAT fFontSize);
+  FX_FLOAT GetWordAscent(const CPVT_WordInfo& WordInfo,
+                         FX_BOOL bFactFontSize = FALSE);
+  FX_FLOAT GetWordDescent(const CPVT_WordInfo& WordInfo,
+                          FX_BOOL bFactFontSize = FALSE);
+  FX_FLOAT GetLineAscent(const CPVT_SectionInfo& SecInfo);
+  FX_FLOAT GetLineDescent(const CPVT_SectionInfo& SecInfo);
+  FX_FLOAT GetFontAscent(int32_t nFontIndex, FX_FLOAT fFontSize);
+  FX_FLOAT GetFontDescent(int32_t nFontIndex, FX_FLOAT fFontSize);
+  int32_t GetWordFontIndex(const CPVT_WordInfo& WordInfo);
+  FX_FLOAT GetCharSpace(const CPVT_WordInfo& WordInfo);
+  int32_t GetHorzScale(const CPVT_WordInfo& WordInfo);
+  FX_FLOAT GetLineLeading(const CPVT_SectionInfo& SecInfo);
+  FX_FLOAT GetLineIndent(const CPVT_SectionInfo& SecInfo);
+  int32_t GetAlignment(const CPVT_SectionInfo& SecInfo);
+
+  void ClearSectionRightWords(const CPVT_WordPlace& place);
+
+  FX_BOOL ClearEmptySection(const CPVT_WordPlace& place);
+  void ClearEmptySections(const CPVT_WordRange& PlaceRange);
+  void LinkLatterSection(const CPVT_WordPlace& place);
+  void ClearWords(const CPVT_WordRange& PlaceRange);
+  CPVT_WordPlace ClearLeftWord(const CPVT_WordPlace& place);
+  CPVT_WordPlace ClearRightWord(const CPVT_WordPlace& place);
+
+  CPVT_FloatRect Rearrange(const CPVT_WordRange& PlaceRange);
+  FX_FLOAT GetAutoFontSize();
+  FX_BOOL IsBigger(FX_FLOAT fFontSize);
+  CPVT_FloatRect RearrangeSections(const CPVT_WordRange& PlaceRange);
+
+  void ResetSectionArray();
+
+  CPVT_ArrayTemplate<CSection*> m_SectionArray;
+  int32_t m_nLimitChar;
+  int32_t m_nCharArray;
+  FX_BOOL m_bMultiLine;
+  FX_BOOL m_bLimitWidth;
+  FX_BOOL m_bAutoFontSize;
+  int32_t m_nAlignment;
+  FX_FLOAT m_fLineLeading;
+  FX_FLOAT m_fCharSpace;
+  int32_t m_nHorzScale;
+  uint16_t m_wSubWord;
+  FX_FLOAT m_fFontSize;
+  FX_BOOL m_bInitial;
+  FX_BOOL m_bRichText;
+  CPDF_VariableText::Provider* m_pVTProvider;
+  CPDF_VariableText::Iterator* m_pVTIterator;
+};
+
+#endif  // CORE_FPDFDOC_INCLUDE_CPDF_VARIABLETEXT_H_
diff --git a/core/fpdfdoc/include/cpvt_line.h b/core/fpdfdoc/include/cpvt_line.h
new file mode 100644
index 0000000000..ea0f899e19
--- /dev/null
+++ b/core/fpdfdoc/include/cpvt_line.h
@@ -0,0 +1,26 @@
+// 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_FPDFDOC_INCLUDE_CPVT_LINE_H_
+#define CORE_FPDFDOC_INCLUDE_CPVT_LINE_H_
+
+#include "core/fpdfdoc/include/cpvt_wordplace.h"
+#include "core/fxcrt/include/fx_coordinates.h"
+#include "core/fxcrt/include/fx_system.h"
+
+struct CPVT_Line {
+  CPVT_Line()
+      : ptLine(0, 0), fLineWidth(0.0f), fLineAscent(0.0f), fLineDescent(0.0f) {}
+
+  CPVT_WordPlace lineplace;
+  CPVT_WordPlace lineEnd;
+  CFX_FloatPoint ptLine;
+  FX_FLOAT fLineWidth;
+  FX_FLOAT fLineAscent;
+  FX_FLOAT fLineDescent;
+};
+
+#endif  // CORE_FPDFDOC_INCLUDE_CPVT_LINE_H_
diff --git a/core/fpdfdoc/include/cpvt_secprops.h b/core/fpdfdoc/include/cpvt_secprops.h
new file mode 100644
index 0000000000..67878f8625
--- /dev/null
+++ b/core/fpdfdoc/include/cpvt_secprops.h
@@ -0,0 +1,30 @@
+// 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_FPDFDOC_INCLUDE_CPVT_SECPROPS_H_
+#define CORE_FPDFDOC_INCLUDE_CPVT_SECPROPS_H_
+
+#include "core/fxcrt/include/fx_system.h"
+
+struct CPVT_SecProps {
+  CPVT_SecProps() : fLineLeading(0.0f), fLineIndent(0.0f), nAlignment(0) {}
+
+  CPVT_SecProps(FX_FLOAT lineLeading, FX_FLOAT lineIndent, int32_t alignment)
+      : fLineLeading(lineLeading),
+        fLineIndent(lineIndent),
+        nAlignment(alignment) {}
+
+  CPVT_SecProps(const CPVT_SecProps& other)
+      : fLineLeading(other.fLineLeading),
+        fLineIndent(other.fLineIndent),
+        nAlignment(other.nAlignment) {}
+
+  FX_FLOAT fLineLeading;
+  FX_FLOAT fLineIndent;
+  int32_t nAlignment;
+};
+
+#endif  // CORE_FPDFDOC_INCLUDE_CPVT_SECPROPS_H_
diff --git a/core/fpdfdoc/include/cpvt_section.h b/core/fpdfdoc/include/cpvt_section.h
new file mode 100644
index 0000000000..a9820bd5f9
--- /dev/null
+++ b/core/fpdfdoc/include/cpvt_section.h
@@ -0,0 +1,22 @@
+// 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_FPDFDOC_INCLUDE_CPVT_SECTION_H_
+#define CORE_FPDFDOC_INCLUDE_CPVT_SECTION_H_
+
+#include "core/fpdfdoc/include/cpvt_secprops.h"
+#include "core/fpdfdoc/include/cpvt_wordplace.h"
+#include "core/fpdfdoc/include/cpvt_wordprops.h"
+#include "core/fxcrt/include/fx_coordinates.h"
+
+struct CPVT_Section {
+  CPVT_WordPlace secplace;
+  CFX_FloatRect rcSection;
+  CPVT_SecProps SecProps;
+  CPVT_WordProps WordProps;
+};
+
+#endif  // CORE_FPDFDOC_INCLUDE_CPVT_SECTION_H_
diff --git a/core/fpdfdoc/include/cpvt_word.h b/core/fpdfdoc/include/cpvt_word.h
new file mode 100644
index 0000000000..7d022dda5d
--- /dev/null
+++ b/core/fpdfdoc/include/cpvt_word.h
@@ -0,0 +1,37 @@
+// 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_FPDFDOC_INCLUDE_CPVT_WORD_H_
+#define CORE_FPDFDOC_INCLUDE_CPVT_WORD_H_
+
+#include "core/fpdfdoc/include/cpvt_wordplace.h"
+#include "core/fpdfdoc/include/cpvt_wordprops.h"
+#include "core/fxcrt/include/fx_system.h"
+
+struct CPVT_Word {
+  CPVT_Word()
+      : Word(0),
+        nCharset(0),
+        ptWord(0, 0),
+        fAscent(0.0f),
+        fDescent(0.0f),
+        fWidth(0.0f),
+        fFontSize(0),
+        WordProps() {}
+
+  uint16_t Word;
+  int32_t nCharset;
+  CPVT_WordPlace WordPlace;
+  CFX_FloatPoint ptWord;
+  FX_FLOAT fAscent;
+  FX_FLOAT fDescent;
+  FX_FLOAT fWidth;
+  int32_t nFontIndex;
+  FX_FLOAT fFontSize;
+  CPVT_WordProps WordProps;
+};
+
+#endif  // CORE_FPDFDOC_INCLUDE_CPVT_WORD_H_
diff --git a/core/fpdfdoc/include/cpvt_wordplace.h b/core/fpdfdoc/include/cpvt_wordplace.h
new file mode 100644
index 0000000000..ef7907797e
--- /dev/null
+++ b/core/fpdfdoc/include/cpvt_wordplace.h
@@ -0,0 +1,73 @@
+// 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_FPDFDOC_INCLUDE_CPVT_WORDPLACE_H_
+#define CORE_FPDFDOC_INCLUDE_CPVT_WORDPLACE_H_
+
+#include "core/fxcrt/include/fx_system.h"
+
+struct CPVT_WordPlace {
+  CPVT_WordPlace() : nSecIndex(-1), nLineIndex(-1), nWordIndex(-1) {}
+
+  CPVT_WordPlace(int32_t other_nSecIndex,
+                 int32_t other_nLineIndex,
+                 int32_t other_nWordIndex) {
+    nSecIndex = other_nSecIndex;
+    nLineIndex = other_nLineIndex;
+    nWordIndex = other_nWordIndex;
+  }
+
+  void Default() { nSecIndex = nLineIndex = nWordIndex = -1; }
+
+  bool operator==(const CPVT_WordPlace& wp) const {
+    return wp.nSecIndex == nSecIndex && wp.nLineIndex == nLineIndex &&
+           wp.nWordIndex == nWordIndex;
+  }
+
+  FX_BOOL operator!=(const CPVT_WordPlace& wp) const { return !(*this == wp); }
+
+  inline int32_t WordCmp(const CPVT_WordPlace& wp) const {
+    if (nSecIndex > wp.nSecIndex)
+      return 1;
+    if (nSecIndex < wp.nSecIndex)
+      return -1;
+    if (nLineIndex > wp.nLineIndex)
+      return 1;
+    if (nLineIndex < wp.nLineIndex)
+      return -1;
+    if (nWordIndex > wp.nWordIndex)
+      return 1;
+    if (nWordIndex < wp.nWordIndex)
+      return -1;
+    return 0;
+  }
+
+  inline int32_t LineCmp(const CPVT_WordPlace& wp) const {
+    if (nSecIndex > wp.nSecIndex)
+      return 1;
+    if (nSecIndex < wp.nSecIndex)
+      return -1;
+    if (nLineIndex > wp.nLineIndex)
+      return 1;
+    if (nLineIndex < wp.nLineIndex)
+      return -1;
+    return 0;
+  }
+
+  inline int32_t SecCmp(const CPVT_WordPlace& wp) const {
+    if (nSecIndex > wp.nSecIndex)
+      return 1;
+    if (nSecIndex < wp.nSecIndex)
+      return -1;
+    return 0;
+  }
+
+  int32_t nSecIndex;
+  int32_t nLineIndex;
+  int32_t nWordIndex;
+};
+
+#endif  // CORE_FPDFDOC_INCLUDE_CPVT_WORDPLACE_H_
diff --git a/core/fpdfdoc/include/cpvt_wordprops.h b/core/fpdfdoc/include/cpvt_wordprops.h
new file mode 100644
index 0000000000..e091579239
--- /dev/null
+++ b/core/fpdfdoc/include/cpvt_wordprops.h
@@ -0,0 +1,58 @@
+// 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_FPDFDOC_INCLUDE_CPVT_WORDPROPS_H_
+#define CORE_FPDFDOC_INCLUDE_CPVT_WORDPROPS_H_
+
+#include "core/fpdfdoc/include/cpdf_variabletext.h"
+#include "core/fxcrt/include/fx_system.h"
+#include "core/include/fxge/fx_dib.h"
+
+struct CPVT_WordProps {
+  CPVT_WordProps()
+      : nFontIndex(-1),
+        fFontSize(0.0f),
+        dwWordColor(0),
+        nScriptType(CPDF_VariableText::ScriptType::Normal),
+        nWordStyle(0),
+        fCharSpace(0.0f),
+        nHorzScale(0) {}
+
+  CPVT_WordProps(int32_t fontIndex,
+                 FX_FLOAT fontSize,
+                 FX_COLORREF wordColor = 0,
+                 CPDF_VariableText::ScriptType scriptType =
+                     CPDF_VariableText::ScriptType::Normal,
+                 int32_t wordStyle = 0,
+                 FX_FLOAT charSpace = 0,
+                 int32_t horzScale = 100)
+      : nFontIndex(fontIndex),
+        fFontSize(fontSize),
+        dwWordColor(wordColor),
+        nScriptType(scriptType),
+        nWordStyle(wordStyle),
+        fCharSpace(charSpace),
+        nHorzScale(horzScale) {}
+
+  CPVT_WordProps(const CPVT_WordProps& other)
+      : nFontIndex(other.nFontIndex),
+        fFontSize(other.fFontSize),
+        dwWordColor(other.dwWordColor),
+        nScriptType(other.nScriptType),
+        nWordStyle(other.nWordStyle),
+        fCharSpace(other.fCharSpace),
+        nHorzScale(other.nHorzScale) {}
+
+  int32_t nFontIndex;
+  FX_FLOAT fFontSize;
+  FX_COLORREF dwWordColor;
+  CPDF_VariableText::ScriptType nScriptType;
+  int32_t nWordStyle;
+  FX_FLOAT fCharSpace;
+  int32_t nHorzScale;
+};
+
+#endif  // CORE_FPDFDOC_INCLUDE_CPVT_WORDPROPS_H_
diff --git a/core/fpdfdoc/include/cpvt_wordrange.h b/core/fpdfdoc/include/cpvt_wordrange.h
new file mode 100644
index 0000000000..3c6f05b159
--- /dev/null
+++ b/core/fpdfdoc/include/cpvt_wordrange.h
@@ -0,0 +1,59 @@
+// 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_FPDFDOC_INCLUDE_CPVT_WORDRANGE_H_
+#define CORE_FPDFDOC_INCLUDE_CPVT_WORDRANGE_H_
+
+#include "core/fpdfdoc/include/cpvt_wordplace.h"
+#include "core/fxcrt/include/fx_system.h"
+
+struct CPVT_WordRange {
+  CPVT_WordRange() {}
+
+  CPVT_WordRange(const CPVT_WordPlace& begin, const CPVT_WordPlace& end) {
+    Set(begin, end);
+  }
+
+  void Default() {
+    BeginPos.Default();
+    EndPos.Default();
+  }
+
+  void Set(const CPVT_WordPlace& begin, const CPVT_WordPlace& end) {
+    BeginPos = begin;
+    EndPos = end;
+    SwapWordPlace();
+  }
+
+  void SetBeginPos(const CPVT_WordPlace& begin) {
+    BeginPos = begin;
+    SwapWordPlace();
+  }
+
+  void SetEndPos(const CPVT_WordPlace& end) {
+    EndPos = end;
+    SwapWordPlace();
+  }
+
+  FX_BOOL IsExist() const { return BeginPos != EndPos; }
+
+  FX_BOOL operator!=(const CPVT_WordRange& wr) const {
+    return wr.BeginPos != BeginPos || wr.EndPos != EndPos;
+  }
+
+  void SwapWordPlace() {
+    if (BeginPos.WordCmp(EndPos) > 0) {
+      CPVT_WordPlace place = EndPos;
+      EndPos = BeginPos;
+      BeginPos = place;
+    }
+  }
+
+  CPVT_WordPlace BeginPos;
+  CPVT_WordPlace EndPos;
+};
+
+#endif  // CORE_FPDFDOC_INCLUDE_CPVT_WORDRANGE_H_
diff --git a/core/fpdfdoc/include/ipvt_fontmap.h b/core/fpdfdoc/include/ipvt_fontmap.h
new file mode 100644
index 0000000000..9835d5ec12
--- /dev/null
+++ b/core/fpdfdoc/include/ipvt_fontmap.h
@@ -0,0 +1,29 @@
+// 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_FPDFDOC_INCLUDE_IPVT_FONTMAP_H_
+#define CORE_FPDFDOC_INCLUDE_IPVT_FONTMAP_H_
+
+#include <stdint.h>
+
+#include "core/fxcrt/include/fx_string.h"
+
+class CPDF_Font;
+
+class IPVT_FontMap {
+ public:
+  virtual ~IPVT_FontMap() {}
+
+  virtual CPDF_Font* GetPDFFont(int32_t nFontIndex) = 0;
+  virtual CFX_ByteString GetPDFFontAlias(int32_t nFontIndex) = 0;
+  virtual int32_t GetWordFontIndex(uint16_t word,
+                                   int32_t charset,
+                                   int32_t nFontIndex) = 0;
+  virtual int32_t CharCodeFromUnicode(int32_t nFontIndex, uint16_t word) = 0;
+  virtual int32_t CharSetFromUnicode(uint16_t word, int32_t nOldCharset) = 0;
+};
+
+#endif  // CORE_FPDFDOC_INCLUDE_IPVT_FONTMAP_H_