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

1 files changed, 1161 insertions, 0 deletions

diff --git a/core/fpdfdoc/cpdf_variabletext.cpp b/core/fpdfdoc/cpdf_variabletext.cpp
new file mode 100644
index 0000000000..67887400a4
--- /dev/null
+++ b/core/fpdfdoc/cpdf_variabletext.cpp
@@ -0,0 +1,1161 @@
+// 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
+
+#include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
+#include "core/fpdfdoc/cpvt_wordinfo.h"
+#include "core/fpdfdoc/csection.h"
+#include "core/fpdfdoc/include/cpdf_variabletext.h"
+#include "core/fpdfdoc/include/cpvt_section.h"
+#include "core/fpdfdoc/include/cpvt_word.h"
+#include "core/fpdfdoc/include/ipvt_fontmap.h"
+
+namespace {
+
+const float kDefaultFontSize = 18.0f;
+const float kFontScale = 0.001f;
+const uint8_t kReturnLength = 1;
+const float kScalePercent = 0.01f;
+
+const uint8_t gFontSizeSteps[] = {4,  6,  8,   9,   10,  12,  14, 18, 20,
+                                  25, 30, 35,  40,  45,  50,  55, 60, 70,
+                                  80, 90, 100, 110, 120, 130, 144};
+
+}  // namespace
+
+CPDF_VariableText::Provider::Provider(IPVT_FontMap* pFontMap)
+    : m_pFontMap(pFontMap) {
+  ASSERT(m_pFontMap);
+}
+
+CPDF_VariableText::Provider::~Provider() {}
+
+int32_t CPDF_VariableText::Provider::GetCharWidth(int32_t nFontIndex,
+                                                  uint16_t word,
+                                                  int32_t nWordStyle) {
+  if (CPDF_Font* pPDFFont = m_pFontMap->GetPDFFont(nFontIndex)) {
+    uint32_t charcode = pPDFFont->CharCodeFromUnicode(word);
+    if (charcode != CPDF_Font::kInvalidCharCode)
+      return pPDFFont->GetCharWidthF(charcode);
+  }
+  return 0;
+}
+
+int32_t CPDF_VariableText::Provider::GetTypeAscent(int32_t nFontIndex) {
+  if (CPDF_Font* pPDFFont = m_pFontMap->GetPDFFont(nFontIndex))
+    return pPDFFont->GetTypeAscent();
+  return 0;
+}
+
+int32_t CPDF_VariableText::Provider::GetTypeDescent(int32_t nFontIndex) {
+  if (CPDF_Font* pPDFFont = m_pFontMap->GetPDFFont(nFontIndex))
+    return pPDFFont->GetTypeDescent();
+  return 0;
+}
+
+int32_t CPDF_VariableText::Provider::GetWordFontIndex(uint16_t word,
+                                                      int32_t charset,
+                                                      int32_t nFontIndex) {
+  if (CPDF_Font* pDefFont = m_pFontMap->GetPDFFont(0)) {
+    if (pDefFont->CharCodeFromUnicode(word) != CPDF_Font::kInvalidCharCode)
+      return 0;
+  }
+  if (CPDF_Font* pSysFont = m_pFontMap->GetPDFFont(1)) {
+    if (pSysFont->CharCodeFromUnicode(word) != CPDF_Font::kInvalidCharCode)
+      return 1;
+  }
+  return -1;
+}
+
+FX_BOOL CPDF_VariableText::Provider::IsLatinWord(uint16_t word) {
+  if ((word >= 0x61 && word <= 0x7A) || (word >= 0x41 && word <= 0x5A) ||
+      word == 0x2D || word == 0x27) {
+    return TRUE;
+  }
+  return FALSE;
+}
+
+int32_t CPDF_VariableText::Provider::GetDefaultFontIndex() {
+  return 0;
+}
+
+CPDF_VariableText::Iterator::Iterator(CPDF_VariableText* pVT)
+    : m_CurPos(-1, -1, -1), m_pVT(pVT) {}
+
+CPDF_VariableText::Iterator::~Iterator() {}
+
+void CPDF_VariableText::Iterator::SetAt(int32_t nWordIndex) {
+  m_CurPos = m_pVT->WordIndexToWordPlace(nWordIndex);
+}
+
+void CPDF_VariableText::Iterator::SetAt(const CPVT_WordPlace& place) {
+  ASSERT(m_pVT);
+  m_CurPos = place;
+}
+
+FX_BOOL CPDF_VariableText::Iterator::NextWord() {
+  if (m_CurPos == m_pVT->GetEndWordPlace())
+    return FALSE;
+
+  m_CurPos = m_pVT->GetNextWordPlace(m_CurPos);
+  return TRUE;
+}
+
+FX_BOOL CPDF_VariableText::Iterator::PrevWord() {
+  if (m_CurPos == m_pVT->GetBeginWordPlace())
+    return FALSE;
+
+  m_CurPos = m_pVT->GetPrevWordPlace(m_CurPos);
+  return TRUE;
+}
+
+FX_BOOL CPDF_VariableText::Iterator::NextLine() {
+  if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
+    if (m_CurPos.nLineIndex < pSection->m_LineArray.GetSize() - 1) {
+      m_CurPos =
+          CPVT_WordPlace(m_CurPos.nSecIndex, m_CurPos.nLineIndex + 1, -1);
+      return TRUE;
+    }
+    if (m_CurPos.nSecIndex < m_pVT->m_SectionArray.GetSize() - 1) {
+      m_CurPos = CPVT_WordPlace(m_CurPos.nSecIndex + 1, 0, -1);
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDF_VariableText::Iterator::PrevLine() {
+  if (m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
+    if (m_CurPos.nLineIndex > 0) {
+      m_CurPos =
+          CPVT_WordPlace(m_CurPos.nSecIndex, m_CurPos.nLineIndex - 1, -1);
+      return TRUE;
+    }
+    if (m_CurPos.nSecIndex > 0) {
+      if (CSection* pLastSection =
+              m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex - 1)) {
+        m_CurPos = CPVT_WordPlace(m_CurPos.nSecIndex - 1,
+                                  pLastSection->m_LineArray.GetSize() - 1, -1);
+        return TRUE;
+      }
+    }
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDF_VariableText::Iterator::NextSection() {
+  if (m_CurPos.nSecIndex < m_pVT->m_SectionArray.GetSize() - 1) {
+    m_CurPos = CPVT_WordPlace(m_CurPos.nSecIndex + 1, 0, -1);
+    return TRUE;
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDF_VariableText::Iterator::PrevSection() {
+  ASSERT(m_pVT);
+  if (m_CurPos.nSecIndex > 0) {
+    m_CurPos = CPVT_WordPlace(m_CurPos.nSecIndex - 1, 0, -1);
+    return TRUE;
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDF_VariableText::Iterator::GetWord(CPVT_Word& word) const {
+  word.WordPlace = m_CurPos;
+  if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
+    if (pSection->m_LineArray.GetAt(m_CurPos.nLineIndex)) {
+      if (CPVT_WordInfo* pWord =
+              pSection->m_WordArray.GetAt(m_CurPos.nWordIndex)) {
+        word.Word = pWord->Word;
+        word.nCharset = pWord->nCharset;
+        word.fWidth = m_pVT->GetWordWidth(*pWord);
+        word.ptWord = m_pVT->InToOut(
+            CFX_FloatPoint(pWord->fWordX + pSection->m_SecInfo.rcSection.left,
+                           pWord->fWordY + pSection->m_SecInfo.rcSection.top));
+        word.fAscent = m_pVT->GetWordAscent(*pWord);
+        word.fDescent = m_pVT->GetWordDescent(*pWord);
+        if (pWord->pWordProps)
+          word.WordProps = *pWord->pWordProps;
+
+        word.nFontIndex = m_pVT->GetWordFontIndex(*pWord);
+        word.fFontSize = m_pVT->GetWordFontSize(*pWord);
+        return TRUE;
+      }
+    }
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDF_VariableText::Iterator::SetWord(const CPVT_Word& word) {
+  if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
+    if (CPVT_WordInfo* pWord =
+            pSection->m_WordArray.GetAt(m_CurPos.nWordIndex)) {
+      if (pWord->pWordProps)
+        *pWord->pWordProps = word.WordProps;
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDF_VariableText::Iterator::GetLine(CPVT_Line& line) const {
+  ASSERT(m_pVT);
+  line.lineplace = CPVT_WordPlace(m_CurPos.nSecIndex, m_CurPos.nLineIndex, -1);
+  if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
+    if (CLine* pLine = pSection->m_LineArray.GetAt(m_CurPos.nLineIndex)) {
+      line.ptLine = m_pVT->InToOut(CFX_FloatPoint(
+          pLine->m_LineInfo.fLineX + pSection->m_SecInfo.rcSection.left,
+          pLine->m_LineInfo.fLineY + pSection->m_SecInfo.rcSection.top));
+      line.fLineWidth = pLine->m_LineInfo.fLineWidth;
+      line.fLineAscent = pLine->m_LineInfo.fLineAscent;
+      line.fLineDescent = pLine->m_LineInfo.fLineDescent;
+      line.lineEnd = pLine->GetEndWordPlace();
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDF_VariableText::Iterator::GetSection(CPVT_Section& section) const {
+  section.secplace = CPVT_WordPlace(m_CurPos.nSecIndex, 0, -1);
+  if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
+    section.rcSection = m_pVT->InToOut(pSection->m_SecInfo.rcSection);
+    if (pSection->m_SecInfo.pSecProps)
+      section.SecProps = *pSection->m_SecInfo.pSecProps;
+    if (pSection->m_SecInfo.pWordProps)
+      section.WordProps = *pSection->m_SecInfo.pWordProps;
+    return TRUE;
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDF_VariableText::Iterator::SetSection(const CPVT_Section& section) {
+  if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
+    if (pSection->m_SecInfo.pSecProps)
+      *pSection->m_SecInfo.pSecProps = section.SecProps;
+    if (pSection->m_SecInfo.pWordProps)
+      *pSection->m_SecInfo.pWordProps = section.WordProps;
+    return TRUE;
+  }
+  return FALSE;
+}
+
+CPDF_VariableText::CPDF_VariableText()
+    : m_nLimitChar(0),
+      m_nCharArray(0),
+      m_bMultiLine(FALSE),
+      m_bLimitWidth(FALSE),
+      m_bAutoFontSize(FALSE),
+      m_nAlignment(0),
+      m_fLineLeading(0.0f),
+      m_fCharSpace(0.0f),
+      m_nHorzScale(100),
+      m_wSubWord(0),
+      m_fFontSize(0.0f),
+      m_bInitial(FALSE),
+      m_bRichText(FALSE),
+      m_pVTProvider(nullptr),
+      m_pVTIterator(nullptr) {}
+
+CPDF_VariableText::~CPDF_VariableText() {
+  delete m_pVTIterator;
+  ResetAll();
+}
+
+void CPDF_VariableText::Initialize() {
+  if (!m_bInitial) {
+    CPVT_SectionInfo secinfo;
+    if (m_bRichText) {
+      secinfo.pSecProps = new CPVT_SecProps(0.0f, 0.0f, 0);
+      secinfo.pWordProps = new CPVT_WordProps(
+          GetDefaultFontIndex(), kDefaultFontSize, 0, ScriptType::Normal, 0);
+    }
+    CPVT_WordPlace place;
+    place.nSecIndex = 0;
+    AddSection(place, secinfo);
+    CPVT_LineInfo lineinfo;
+    lineinfo.fLineAscent = GetFontAscent(GetDefaultFontIndex(), GetFontSize());
+    lineinfo.fLineDescent =
+        GetFontDescent(GetDefaultFontIndex(), GetFontSize());
+    AddLine(place, lineinfo);
+    if (CSection* pSection = m_SectionArray.GetAt(0))
+      pSection->ResetLinePlace();
+
+    m_bInitial = TRUE;
+  }
+}
+
+void CPDF_VariableText::ResetAll() {
+  m_bInitial = FALSE;
+  ResetSectionArray();
+}
+
+CPVT_WordPlace CPDF_VariableText::InsertWord(const CPVT_WordPlace& place,
+                                             uint16_t word,
+                                             int32_t charset,
+                                             const CPVT_WordProps* pWordProps) {
+  int32_t nTotlaWords = GetTotalWords();
+  if (m_nLimitChar > 0 && nTotlaWords >= m_nLimitChar)
+    return place;
+  if (m_nCharArray > 0 && nTotlaWords >= m_nCharArray)
+    return place;
+
+  CPVT_WordPlace newplace = place;
+  newplace.nWordIndex++;
+  if (m_bRichText) {
+    CPVT_WordProps* pNewProps =
+        pWordProps ? new CPVT_WordProps(*pWordProps) : new CPVT_WordProps();
+    pNewProps->nFontIndex =
+        GetWordFontIndex(word, charset, pWordProps->nFontIndex);
+    return AddWord(newplace, CPVT_WordInfo(word, charset, -1, pNewProps));
+  }
+  int32_t nFontIndex =
+      GetSubWord() > 0 ? GetDefaultFontIndex()
+                       : GetWordFontIndex(word, charset, GetDefaultFontIndex());
+  return AddWord(newplace, CPVT_WordInfo(word, charset, nFontIndex, NULL));
+}
+
+CPVT_WordPlace CPDF_VariableText::InsertSection(
+    const CPVT_WordPlace& place,
+    const CPVT_SecProps* pSecProps,
+    const CPVT_WordProps* pWordProps) {
+  int32_t nTotlaWords = GetTotalWords();
+  if (m_nLimitChar > 0 && nTotlaWords >= m_nLimitChar)
+    return place;
+  if (m_nCharArray > 0 && nTotlaWords >= m_nCharArray)
+    return place;
+  if (!m_bMultiLine)
+    return place;
+
+  CPVT_WordPlace wordplace = place;
+  UpdateWordPlace(wordplace);
+  CPVT_WordPlace newplace = place;
+  if (CSection* pSection = m_SectionArray.GetAt(wordplace.nSecIndex)) {
+    CPVT_WordPlace NewPlace(wordplace.nSecIndex + 1, 0, -1);
+    CPVT_SectionInfo secinfo;
+    if (m_bRichText) {
+      if (pSecProps)
+        secinfo.pSecProps = new CPVT_SecProps(*pSecProps);
+      if (pWordProps)
+        secinfo.pWordProps = new CPVT_WordProps(*pWordProps);
+    }
+    AddSection(NewPlace, secinfo);
+    newplace = NewPlace;
+    if (CSection* pNewSection = m_SectionArray.GetAt(NewPlace.nSecIndex)) {
+      for (int32_t w = wordplace.nWordIndex + 1,
+                   sz = pSection->m_WordArray.GetSize();
+           w < sz; w++) {
+        if (CPVT_WordInfo* pWord = pSection->m_WordArray.GetAt(w)) {
+          NewPlace.nWordIndex++;
+          pNewSection->AddWord(NewPlace, *pWord);
+        }
+      }
+    }
+    ClearSectionRightWords(wordplace);
+  }
+  return newplace;
+}
+
+CPVT_WordPlace CPDF_VariableText::InsertText(const CPVT_WordPlace& place,
+                                             const FX_WCHAR* text,
+                                             int32_t charset,
+                                             const CPVT_SecProps* pSecProps,
+                                             const CPVT_WordProps* pProps) {
+  CFX_WideString swText = text;
+  CPVT_WordPlace wp = place;
+  for (int32_t i = 0, sz = swText.GetLength(); i < sz; i++) {
+    CPVT_WordPlace oldwp = wp;
+    uint16_t word = swText.GetAt(i);
+    switch (word) {
+      case 0x0D:
+        if (m_bMultiLine) {
+          if (swText.GetAt(i + 1) == 0x0A)
+            i += 1;
+
+          wp = InsertSection(wp, pSecProps, pProps);
+        }
+        break;
+      case 0x0A:
+        if (m_bMultiLine) {
+          if (swText.GetAt(i + 1) == 0x0D)
+            i += 1;
+
+          wp = InsertSection(wp, pSecProps, pProps);
+        }
+        break;
+      case 0x09:
+        word = 0x20;
+      default:
+        wp = InsertWord(wp, word, charset, pProps);
+        break;
+    }
+    if (wp == oldwp)
+      break;
+  }
+  return wp;
+}
+
+CPVT_WordPlace CPDF_VariableText::DeleteWords(
+    const CPVT_WordRange& PlaceRange) {
+  FX_BOOL bLastSecPos = FALSE;
+  if (CSection* pSection = m_SectionArray.GetAt(PlaceRange.EndPos.nSecIndex))
+    bLastSecPos = (PlaceRange.EndPos == pSection->GetEndWordPlace());
+
+  ClearWords(PlaceRange);
+  if (PlaceRange.BeginPos.nSecIndex != PlaceRange.EndPos.nSecIndex) {
+    ClearEmptySections(PlaceRange);
+    if (!bLastSecPos)
+      LinkLatterSection(PlaceRange.BeginPos);
+  }
+  return PlaceRange.BeginPos;
+}
+
+CPVT_WordPlace CPDF_VariableText::DeleteWord(const CPVT_WordPlace& place) {
+  return ClearRightWord(AdjustLineHeader(place, TRUE));
+}
+
+CPVT_WordPlace CPDF_VariableText::BackSpaceWord(const CPVT_WordPlace& place) {
+  return ClearLeftWord(AdjustLineHeader(place, TRUE));
+}
+
+void CPDF_VariableText::SetText(const FX_WCHAR* text,
+                                int32_t charset,
+                                const CPVT_SecProps* pSecProps,
+                                const CPVT_WordProps* pWordProps) {
+  DeleteWords(CPVT_WordRange(GetBeginWordPlace(), GetEndWordPlace()));
+  CFX_WideString swText = text;
+  CPVT_WordPlace wp(0, 0, -1);
+  CPVT_SectionInfo secinfo;
+  if (m_bRichText) {
+    if (pSecProps)
+      secinfo.pSecProps = new CPVT_SecProps(*pSecProps);
+    if (pWordProps)
+      secinfo.pWordProps = new CPVT_WordProps(*pWordProps);
+  }
+  if (CSection* pSection = m_SectionArray.GetAt(0))
+    pSection->m_SecInfo = secinfo;
+
+  int32_t nCharCount = 0;
+  for (int32_t i = 0, sz = swText.GetLength(); i < sz; i++) {
+    if (m_nLimitChar > 0 && nCharCount >= m_nLimitChar)
+      break;
+    if (m_nCharArray > 0 && nCharCount >= m_nCharArray)
+      break;
+
+    uint16_t word = swText.GetAt(i);
+    switch (word) {
+      case 0x0D:
+        if (m_bMultiLine) {
+          if (swText.GetAt(i + 1) == 0x0A)
+            i += 1;
+
+          wp.nSecIndex++;
+          wp.nLineIndex = 0;
+          wp.nWordIndex = -1;
+          AddSection(wp, secinfo);
+        }
+        break;
+      case 0x0A:
+        if (m_bMultiLine) {
+          if (swText.GetAt(i + 1) == 0x0D)
+            i += 1;
+
+          wp.nSecIndex++;
+          wp.nLineIndex = 0;
+          wp.nWordIndex = -1;
+          AddSection(wp, secinfo);
+        }
+        break;
+      case 0x09:
+        word = 0x20;
+      default:
+        wp = InsertWord(wp, word, charset, pWordProps);
+        break;
+    }
+    nCharCount++;
+  }
+}
+
+void CPDF_VariableText::UpdateWordPlace(CPVT_WordPlace& place) const {
+  if (place.nSecIndex < 0)
+    place = GetBeginWordPlace();
+  if (place.nSecIndex >= m_SectionArray.GetSize())
+    place = GetEndWordPlace();
+
+  place = AdjustLineHeader(place, TRUE);
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex))
+    pSection->UpdateWordPlace(place);
+}
+
+int32_t CPDF_VariableText::WordPlaceToWordIndex(
+    const CPVT_WordPlace& place) const {
+  CPVT_WordPlace newplace = place;
+  UpdateWordPlace(newplace);
+  int32_t nIndex = 0;
+  int32_t i = 0;
+  int32_t sz = 0;
+  for (i = 0, sz = m_SectionArray.GetSize(); i < sz && i < newplace.nSecIndex;
+       i++) {
+    if (CSection* pSection = m_SectionArray.GetAt(i)) {
+      nIndex += pSection->m_WordArray.GetSize();
+      if (i != m_SectionArray.GetSize() - 1)
+        nIndex += kReturnLength;
+    }
+  }
+  if (i >= 0 && i < m_SectionArray.GetSize())
+    nIndex += newplace.nWordIndex + kReturnLength;
+  return nIndex;
+}
+
+CPVT_WordPlace CPDF_VariableText::WordIndexToWordPlace(int32_t index) const {
+  CPVT_WordPlace place = GetBeginWordPlace();
+  int32_t nOldIndex = 0, nIndex = 0;
+  FX_BOOL bFind = FALSE;
+  for (int32_t i = 0, sz = m_SectionArray.GetSize(); i < sz; i++) {
+    if (CSection* pSection = m_SectionArray.GetAt(i)) {
+      nIndex += pSection->m_WordArray.GetSize();
+      if (nIndex == index) {
+        place = pSection->GetEndWordPlace();
+        bFind = TRUE;
+        break;
+      } else if (nIndex > index) {
+        place.nSecIndex = i;
+        place.nWordIndex = index - nOldIndex - 1;
+        pSection->UpdateWordPlace(place);
+        bFind = TRUE;
+        break;
+      }
+      if (i != m_SectionArray.GetSize() - 1)
+        nIndex += kReturnLength;
+      nOldIndex = nIndex;
+    }
+  }
+  if (!bFind)
+    place = GetEndWordPlace();
+  return place;
+}
+
+CPVT_WordPlace CPDF_VariableText::GetBeginWordPlace() const {
+  return m_bInitial ? CPVT_WordPlace(0, 0, -1) : CPVT_WordPlace();
+}
+
+CPVT_WordPlace CPDF_VariableText::GetEndWordPlace() const {
+  if (CSection* pSection = m_SectionArray.GetAt(m_SectionArray.GetSize() - 1))
+    return pSection->GetEndWordPlace();
+  return CPVT_WordPlace();
+}
+
+CPVT_WordPlace CPDF_VariableText::GetPrevWordPlace(
+    const CPVT_WordPlace& place) const {
+  if (place.nSecIndex < 0)
+    return GetBeginWordPlace();
+  if (place.nSecIndex >= m_SectionArray.GetSize())
+    return GetEndWordPlace();
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    if (place.WordCmp(pSection->GetBeginWordPlace()) <= 0) {
+      if (CSection* pPrevSection = m_SectionArray.GetAt(place.nSecIndex - 1))
+        return pPrevSection->GetEndWordPlace();
+      return GetBeginWordPlace();
+    }
+    return pSection->GetPrevWordPlace(place);
+  }
+  return place;
+}
+
+CPVT_WordPlace CPDF_VariableText::GetNextWordPlace(
+    const CPVT_WordPlace& place) const {
+  if (place.nSecIndex < 0)
+    return GetBeginWordPlace();
+  if (place.nSecIndex >= m_SectionArray.GetSize())
+    return GetEndWordPlace();
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    if (place.WordCmp(pSection->GetEndWordPlace()) >= 0) {
+      if (CSection* pNextSection = m_SectionArray.GetAt(place.nSecIndex + 1))
+        return pNextSection->GetBeginWordPlace();
+      return GetEndWordPlace();
+    }
+    return pSection->GetNextWordPlace(place);
+  }
+  return place;
+}
+
+CPVT_WordPlace CPDF_VariableText::SearchWordPlace(
+    const CFX_FloatPoint& point) const {
+  CFX_FloatPoint pt = OutToIn(point);
+  CPVT_WordPlace place = GetBeginWordPlace();
+  int32_t nLeft = 0;
+  int32_t nRight = m_SectionArray.GetSize() - 1;
+  int32_t nMid = m_SectionArray.GetSize() / 2;
+  FX_BOOL bUp = TRUE;
+  FX_BOOL bDown = TRUE;
+  while (nLeft <= nRight) {
+    if (CSection* pSection = m_SectionArray.GetAt(nMid)) {
+      if (IsFloatBigger(pt.y, pSection->m_SecInfo.rcSection.top)) {
+        bUp = FALSE;
+      }
+      if (IsFloatBigger(pSection->m_SecInfo.rcSection.bottom, pt.y)) {
+        bDown = FALSE;
+      }
+      if (IsFloatSmaller(pt.y, pSection->m_SecInfo.rcSection.top)) {
+        nRight = nMid - 1;
+        nMid = (nLeft + nRight) / 2;
+        continue;
+      } else if (IsFloatBigger(pt.y, pSection->m_SecInfo.rcSection.bottom)) {
+        nLeft = nMid + 1;
+        nMid = (nLeft + nRight) / 2;
+        continue;
+      } else {
+        place = pSection->SearchWordPlace(
+            CFX_FloatPoint(pt.x - pSection->m_SecInfo.rcSection.left,
+                           pt.y - pSection->m_SecInfo.rcSection.top));
+        place.nSecIndex = nMid;
+        return place;
+      }
+    } else {
+      break;
+    }
+  }
+  if (bUp)
+    place = GetBeginWordPlace();
+  if (bDown)
+    place = GetEndWordPlace();
+  return place;
+}
+
+CPVT_WordPlace CPDF_VariableText::GetUpWordPlace(
+    const CPVT_WordPlace& place,
+    const CFX_FloatPoint& point) const {
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    CPVT_WordPlace temp = place;
+    CFX_FloatPoint pt = OutToIn(point);
+    if (temp.nLineIndex-- > 0) {
+      return pSection->SearchWordPlace(
+          pt.x - pSection->m_SecInfo.rcSection.left, temp);
+    }
+    if (temp.nSecIndex-- > 0) {
+      if (CSection* pLastSection = m_SectionArray.GetAt(temp.nSecIndex)) {
+        temp.nLineIndex = pLastSection->m_LineArray.GetSize() - 1;
+        return pLastSection->SearchWordPlace(
+            pt.x - pLastSection->m_SecInfo.rcSection.left, temp);
+      }
+    }
+  }
+  return place;
+}
+
+CPVT_WordPlace CPDF_VariableText::GetDownWordPlace(
+    const CPVT_WordPlace& place,
+    const CFX_FloatPoint& point) const {
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    CPVT_WordPlace temp = place;
+    CFX_FloatPoint pt = OutToIn(point);
+    if (temp.nLineIndex++ < pSection->m_LineArray.GetSize() - 1) {
+      return pSection->SearchWordPlace(
+          pt.x - pSection->m_SecInfo.rcSection.left, temp);
+    }
+    if (temp.nSecIndex++ < m_SectionArray.GetSize() - 1) {
+      if (CSection* pNextSection = m_SectionArray.GetAt(temp.nSecIndex)) {
+        temp.nLineIndex = 0;
+        return pNextSection->SearchWordPlace(
+            pt.x - pSection->m_SecInfo.rcSection.left, temp);
+      }
+    }
+  }
+  return place;
+}
+
+CPVT_WordPlace CPDF_VariableText::GetLineBeginPlace(
+    const CPVT_WordPlace& place) const {
+  return CPVT_WordPlace(place.nSecIndex, place.nLineIndex, -1);
+}
+
+CPVT_WordPlace CPDF_VariableText::GetLineEndPlace(
+    const CPVT_WordPlace& place) const {
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    if (CLine* pLine = pSection->m_LineArray.GetAt(place.nLineIndex))
+      return pLine->GetEndWordPlace();
+  }
+  return place;
+}
+
+CPVT_WordPlace CPDF_VariableText::GetSectionBeginPlace(
+    const CPVT_WordPlace& place) const {
+  return CPVT_WordPlace(place.nSecIndex, 0, -1);
+}
+
+CPVT_WordPlace CPDF_VariableText::GetSectionEndPlace(
+    const CPVT_WordPlace& place) const {
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex))
+    return pSection->GetEndWordPlace();
+  return place;
+}
+
+int32_t CPDF_VariableText::GetTotalWords() const {
+  int32_t nTotal = 0;
+  for (int32_t i = 0, sz = m_SectionArray.GetSize(); i < sz; i++) {
+    if (CSection* pSection = m_SectionArray.GetAt(i))
+      nTotal += (pSection->m_WordArray.GetSize() + kReturnLength);
+  }
+
+  return nTotal - kReturnLength;
+}
+
+void CPDF_VariableText::ResetSectionArray() {
+  for (int32_t s = 0, sz = m_SectionArray.GetSize(); s < sz; s++)
+    delete m_SectionArray.GetAt(s);
+
+  m_SectionArray.RemoveAll();
+}
+
+CPVT_WordPlace CPDF_VariableText::AddSection(const CPVT_WordPlace& place,
+                                             const CPVT_SectionInfo& secinfo) {
+  if (IsValid() && !m_bMultiLine)
+    return place;
+
+  int32_t nSecIndex =
+      std::max(std::min(place.nSecIndex, m_SectionArray.GetSize()), 0);
+  CSection* pSection = new CSection(this);
+  pSection->m_SecInfo = secinfo;
+  pSection->SecPlace.nSecIndex = nSecIndex;
+  if (nSecIndex == m_SectionArray.GetSize())
+    m_SectionArray.Add(pSection);
+  else
+    m_SectionArray.InsertAt(nSecIndex, pSection);
+
+  return place;
+}
+
+CPVT_WordPlace CPDF_VariableText::AddLine(const CPVT_WordPlace& place,
+                                          const CPVT_LineInfo& lineinfo) {
+  if (m_SectionArray.IsEmpty())
+    return place;
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex))
+    return pSection->AddLine(lineinfo);
+  return place;
+}
+
+CPVT_WordPlace CPDF_VariableText::AddWord(const CPVT_WordPlace& place,
+                                          const CPVT_WordInfo& wordinfo) {
+  if (m_SectionArray.GetSize() <= 0) {
+    return place;
+  }
+  CPVT_WordPlace newplace = place;
+  newplace.nSecIndex =
+      std::max(std::min(newplace.nSecIndex, m_SectionArray.GetSize() - 1), 0);
+  if (CSection* pSection = m_SectionArray.GetAt(newplace.nSecIndex))
+    return pSection->AddWord(newplace, wordinfo);
+  return place;
+}
+
+FX_BOOL CPDF_VariableText::GetWordInfo(const CPVT_WordPlace& place,
+                                       CPVT_WordInfo& wordinfo) {
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    if (CPVT_WordInfo* pWord = pSection->m_WordArray.GetAt(place.nWordIndex)) {
+      wordinfo = *pWord;
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDF_VariableText::SetWordInfo(const CPVT_WordPlace& place,
+                                       const CPVT_WordInfo& wordinfo) {
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    if (CPVT_WordInfo* pWord = pSection->m_WordArray.GetAt(place.nWordIndex)) {
+      *pWord = wordinfo;
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDF_VariableText::GetLineInfo(const CPVT_WordPlace& place,
+                                       CPVT_LineInfo& lineinfo) {
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    if (CLine* pLine = pSection->m_LineArray.GetAt(place.nLineIndex)) {
+      lineinfo = pLine->m_LineInfo;
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDF_VariableText::GetSectionInfo(const CPVT_WordPlace& place,
+                                          CPVT_SectionInfo& secinfo) {
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    secinfo = pSection->m_SecInfo;
+    return TRUE;
+  }
+  return FALSE;
+}
+
+CFX_FloatRect CPDF_VariableText::GetContentRect() const {
+  return InToOut(CPVT_FloatRect(CPDF_EditContainer::GetContentRect()));
+}
+
+FX_FLOAT CPDF_VariableText::GetWordFontSize(const CPVT_WordInfo& WordInfo,
+                                            FX_BOOL bFactFontSize) {
+  return m_bRichText && WordInfo.pWordProps
+             ? (WordInfo.pWordProps->nScriptType == ScriptType::Normal ||
+                        bFactFontSize
+                    ? WordInfo.pWordProps->fFontSize
+                    : WordInfo.pWordProps->fFontSize * VARIABLETEXT_HALF)
+             : GetFontSize();
+}
+
+int32_t CPDF_VariableText::GetWordFontIndex(const CPVT_WordInfo& WordInfo) {
+  return m_bRichText && WordInfo.pWordProps ? WordInfo.pWordProps->nFontIndex
+                                            : WordInfo.nFontIndex;
+}
+
+FX_FLOAT CPDF_VariableText::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) {
+  return (GetCharWidth(nFontIndex, Word, SubWord, nWordStyle) * fFontSize *
+              kFontScale +
+          fCharSpace) *
+             nHorzScale * kScalePercent +
+         fWordTail;
+}
+
+FX_FLOAT CPDF_VariableText::GetWordWidth(const CPVT_WordInfo& WordInfo) {
+  return GetWordWidth(
+      GetWordFontIndex(WordInfo), WordInfo.Word, GetSubWord(),
+      GetCharSpace(WordInfo), GetHorzScale(WordInfo), GetWordFontSize(WordInfo),
+      WordInfo.fWordTail,
+      WordInfo.pWordProps ? WordInfo.pWordProps->nWordStyle : 0);
+}
+
+FX_FLOAT CPDF_VariableText::GetLineAscent(const CPVT_SectionInfo& SecInfo) {
+  return m_bRichText && SecInfo.pWordProps
+             ? GetFontAscent(SecInfo.pWordProps->nFontIndex,
+                             SecInfo.pWordProps->fFontSize)
+             : GetFontAscent(GetDefaultFontIndex(), GetFontSize());
+}
+
+FX_FLOAT CPDF_VariableText::GetLineDescent(const CPVT_SectionInfo& SecInfo) {
+  return m_bRichText && SecInfo.pWordProps
+             ? GetFontDescent(SecInfo.pWordProps->nFontIndex,
+                              SecInfo.pWordProps->fFontSize)
+             : GetFontDescent(GetDefaultFontIndex(), GetFontSize());
+}
+
+FX_FLOAT CPDF_VariableText::GetFontAscent(int32_t nFontIndex,
+                                          FX_FLOAT fFontSize) {
+  return (FX_FLOAT)GetTypeAscent(nFontIndex) * fFontSize * kFontScale;
+}
+
+FX_FLOAT CPDF_VariableText::GetFontDescent(int32_t nFontIndex,
+                                           FX_FLOAT fFontSize) {
+  return (FX_FLOAT)GetTypeDescent(nFontIndex) * fFontSize * kFontScale;
+}
+
+FX_FLOAT CPDF_VariableText::GetWordAscent(const CPVT_WordInfo& WordInfo,
+                                          FX_FLOAT fFontSize) {
+  return GetFontAscent(GetWordFontIndex(WordInfo), fFontSize);
+}
+
+FX_FLOAT CPDF_VariableText::GetWordDescent(const CPVT_WordInfo& WordInfo,
+                                           FX_FLOAT fFontSize) {
+  return GetFontDescent(GetWordFontIndex(WordInfo), fFontSize);
+}
+
+FX_FLOAT CPDF_VariableText::GetWordAscent(const CPVT_WordInfo& WordInfo,
+                                          FX_BOOL bFactFontSize) {
+  return GetFontAscent(GetWordFontIndex(WordInfo),
+                       GetWordFontSize(WordInfo, bFactFontSize));
+}
+
+FX_FLOAT CPDF_VariableText::GetWordDescent(const CPVT_WordInfo& WordInfo,
+                                           FX_BOOL bFactFontSize) {
+  return GetFontDescent(GetWordFontIndex(WordInfo),
+                        GetWordFontSize(WordInfo, bFactFontSize));
+}
+
+FX_FLOAT CPDF_VariableText::GetLineLeading(const CPVT_SectionInfo& SecInfo) {
+  return m_bRichText && SecInfo.pSecProps ? SecInfo.pSecProps->fLineLeading
+                                          : m_fLineLeading;
+}
+
+FX_FLOAT CPDF_VariableText::GetLineIndent(const CPVT_SectionInfo& SecInfo) {
+  return m_bRichText && SecInfo.pSecProps ? SecInfo.pSecProps->fLineIndent
+                                          : 0.0f;
+}
+
+int32_t CPDF_VariableText::GetAlignment(const CPVT_SectionInfo& SecInfo) {
+  return m_bRichText && SecInfo.pSecProps ? SecInfo.pSecProps->nAlignment
+                                          : m_nAlignment;
+}
+
+FX_FLOAT CPDF_VariableText::GetCharSpace(const CPVT_WordInfo& WordInfo) {
+  return m_bRichText && WordInfo.pWordProps ? WordInfo.pWordProps->fCharSpace
+                                            : m_fCharSpace;
+}
+
+int32_t CPDF_VariableText::GetHorzScale(const CPVT_WordInfo& WordInfo) {
+  return m_bRichText && WordInfo.pWordProps ? WordInfo.pWordProps->nHorzScale
+                                            : m_nHorzScale;
+}
+
+void CPDF_VariableText::ClearSectionRightWords(const CPVT_WordPlace& place) {
+  CPVT_WordPlace wordplace = AdjustLineHeader(place, TRUE);
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    for (int32_t w = pSection->m_WordArray.GetSize() - 1;
+         w > wordplace.nWordIndex; w--) {
+      delete pSection->m_WordArray.GetAt(w);
+      pSection->m_WordArray.RemoveAt(w);
+    }
+  }
+}
+
+CPVT_WordPlace CPDF_VariableText::AdjustLineHeader(const CPVT_WordPlace& place,
+                                                   FX_BOOL bPrevOrNext) const {
+  if (place.nWordIndex < 0 && place.nLineIndex > 0)
+    return bPrevOrNext ? GetPrevWordPlace(place) : GetNextWordPlace(place);
+  return place;
+}
+
+FX_BOOL CPDF_VariableText::ClearEmptySection(const CPVT_WordPlace& place) {
+  if (place.nSecIndex == 0 && m_SectionArray.GetSize() == 1)
+    return FALSE;
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    if (pSection->m_WordArray.GetSize() == 0) {
+      delete pSection;
+      m_SectionArray.RemoveAt(place.nSecIndex);
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+void CPDF_VariableText::ClearEmptySections(const CPVT_WordRange& PlaceRange) {
+  CPVT_WordPlace wordplace;
+  for (int32_t s = PlaceRange.EndPos.nSecIndex;
+       s > PlaceRange.BeginPos.nSecIndex; s--) {
+    wordplace.nSecIndex = s;
+    ClearEmptySection(wordplace);
+  }
+}
+
+void CPDF_VariableText::LinkLatterSection(const CPVT_WordPlace& place) {
+  CPVT_WordPlace oldplace = AdjustLineHeader(place, TRUE);
+  if (CSection* pNextSection = m_SectionArray.GetAt(place.nSecIndex + 1)) {
+    if (CSection* pSection = m_SectionArray.GetAt(oldplace.nSecIndex)) {
+      for (int32_t w = 0, sz = pNextSection->m_WordArray.GetSize(); w < sz;
+           w++) {
+        if (CPVT_WordInfo* pWord = pNextSection->m_WordArray.GetAt(w)) {
+          oldplace.nWordIndex++;
+          pSection->AddWord(oldplace, *pWord);
+        }
+      }
+    }
+    delete pNextSection;
+    m_SectionArray.RemoveAt(place.nSecIndex + 1);
+  }
+}
+
+void CPDF_VariableText::ClearWords(const CPVT_WordRange& PlaceRange) {
+  CPVT_WordRange NewRange;
+  NewRange.BeginPos = AdjustLineHeader(PlaceRange.BeginPos, TRUE);
+  NewRange.EndPos = AdjustLineHeader(PlaceRange.EndPos, TRUE);
+  for (int32_t s = NewRange.EndPos.nSecIndex; s >= NewRange.BeginPos.nSecIndex;
+       s--) {
+    if (CSection* pSection = m_SectionArray.GetAt(s))
+      pSection->ClearWords(NewRange);
+  }
+}
+
+CPVT_WordPlace CPDF_VariableText::ClearLeftWord(const CPVT_WordPlace& place) {
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    CPVT_WordPlace leftplace = GetPrevWordPlace(place);
+    if (leftplace != place) {
+      if (leftplace.nSecIndex != place.nSecIndex) {
+        if (pSection->m_WordArray.GetSize() == 0)
+          ClearEmptySection(place);
+        else
+          LinkLatterSection(leftplace);
+      } else {
+        pSection->ClearWord(place);
+      }
+    }
+    return leftplace;
+  }
+  return place;
+}
+
+CPVT_WordPlace CPDF_VariableText::ClearRightWord(const CPVT_WordPlace& place) {
+  if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
+    CPVT_WordPlace rightplace =
+        AdjustLineHeader(GetNextWordPlace(place), FALSE);
+    if (rightplace != place) {
+      if (rightplace.nSecIndex != place.nSecIndex)
+        LinkLatterSection(place);
+      else
+        pSection->ClearWord(rightplace);
+    }
+  }
+  return place;
+}
+
+void CPDF_VariableText::RearrangeAll() {
+  Rearrange(CPVT_WordRange(GetBeginWordPlace(), GetEndWordPlace()));
+}
+
+void CPDF_VariableText::RearrangePart(const CPVT_WordRange& PlaceRange) {
+  Rearrange(PlaceRange);
+}
+
+CPVT_FloatRect CPDF_VariableText::Rearrange(const CPVT_WordRange& PlaceRange) {
+  CPVT_FloatRect rcRet;
+  if (IsValid()) {
+    if (m_bAutoFontSize) {
+      SetFontSize(GetAutoFontSize());
+      rcRet = RearrangeSections(
+          CPVT_WordRange(GetBeginWordPlace(), GetEndWordPlace()));
+    } else {
+      rcRet = RearrangeSections(PlaceRange);
+    }
+  }
+  SetContentRect(rcRet);
+  return rcRet;
+}
+
+FX_FLOAT CPDF_VariableText::GetAutoFontSize() {
+  int32_t nTotal = sizeof(gFontSizeSteps) / sizeof(uint8_t);
+  if (IsMultiLine())
+    nTotal /= 4;
+  if (nTotal <= 0)
+    return 0;
+  if (GetPlateWidth() <= 0)
+    return 0;
+
+  int32_t nLeft = 0;
+  int32_t nRight = nTotal - 1;
+  int32_t nMid = nTotal / 2;
+  while (nLeft <= nRight) {
+    if (IsBigger(gFontSizeSteps[nMid])) {
+      nRight = nMid - 1;
+      nMid = (nLeft + nRight) / 2;
+      continue;
+    } else {
+      nLeft = nMid + 1;
+      nMid = (nLeft + nRight) / 2;
+      continue;
+    }
+  }
+  return (FX_FLOAT)gFontSizeSteps[nMid];
+}
+
+FX_BOOL CPDF_VariableText::IsBigger(FX_FLOAT fFontSize) {
+  FX_BOOL bBigger = FALSE;
+  CPVT_Size szTotal;
+  for (int32_t s = 0, sz = m_SectionArray.GetSize(); s < sz; s++) {
+    if (CSection* pSection = m_SectionArray.GetAt(s)) {
+      CPVT_Size size = pSection->GetSectionSize(fFontSize);
+      szTotal.x = std::max(size.x, szTotal.x);
+      szTotal.y += size.y;
+      if (IsFloatBigger(szTotal.x, GetPlateWidth()) ||
+          IsFloatBigger(szTotal.y, GetPlateHeight())) {
+        bBigger = TRUE;
+        break;
+      }
+    }
+  }
+  return bBigger;
+}
+
+CPVT_FloatRect CPDF_VariableText::RearrangeSections(
+    const CPVT_WordRange& PlaceRange) {
+  CPVT_WordPlace place;
+  FX_FLOAT fPosY = 0;
+  FX_FLOAT fOldHeight;
+  int32_t nSSecIndex = PlaceRange.BeginPos.nSecIndex;
+  int32_t nESecIndex = PlaceRange.EndPos.nSecIndex;
+  CPVT_FloatRect rcRet;
+  for (int32_t s = 0, sz = m_SectionArray.GetSize(); s < sz; s++) {
+    place.nSecIndex = s;
+    if (CSection* pSection = m_SectionArray.GetAt(s)) {
+      pSection->SecPlace = place;
+      CPVT_FloatRect rcSec = pSection->m_SecInfo.rcSection;
+      if (s >= nSSecIndex) {
+        if (s <= nESecIndex) {
+          rcSec = pSection->Rearrange();
+          rcSec.top += fPosY;
+          rcSec.bottom += fPosY;
+        } else {
+          fOldHeight = pSection->m_SecInfo.rcSection.bottom -
+                       pSection->m_SecInfo.rcSection.top;
+          rcSec.top = fPosY;
+          rcSec.bottom = fPosY + fOldHeight;
+        }
+        pSection->m_SecInfo.rcSection = rcSec;
+        pSection->ResetLinePlace();
+      }
+      if (s == 0) {
+        rcRet = rcSec;
+      } else {
+        rcRet.left = std::min(rcSec.left, rcRet.left);
+        rcRet.top = std::min(rcSec.top, rcRet.top);
+        rcRet.right = std::max(rcSec.right, rcRet.right);
+        rcRet.bottom = std::max(rcSec.bottom, rcRet.bottom);
+      }
+      fPosY += rcSec.Height();
+    }
+  }
+  return rcRet;
+}
+
+int32_t CPDF_VariableText::GetCharWidth(int32_t nFontIndex,
+                                        uint16_t Word,
+                                        uint16_t SubWord,
+                                        int32_t nWordStyle) {
+  if (!m_pVTProvider)
+    return 0;
+  if (SubWord > 0)
+    return m_pVTProvider->GetCharWidth(nFontIndex, SubWord, nWordStyle);
+  return m_pVTProvider->GetCharWidth(nFontIndex, Word, nWordStyle);
+}
+
+int32_t CPDF_VariableText::GetTypeAscent(int32_t nFontIndex) {
+  return m_pVTProvider ? m_pVTProvider->GetTypeAscent(nFontIndex) : 0;
+}
+
+int32_t CPDF_VariableText::GetTypeDescent(int32_t nFontIndex) {
+  return m_pVTProvider ? m_pVTProvider->GetTypeDescent(nFontIndex) : 0;
+}
+
+int32_t CPDF_VariableText::GetWordFontIndex(uint16_t word,
+                                            int32_t charset,
+                                            int32_t nFontIndex) {
+  return m_pVTProvider
+             ? m_pVTProvider->GetWordFontIndex(word, charset, nFontIndex)
+             : -1;
+}
+
+int32_t CPDF_VariableText::GetDefaultFontIndex() {
+  return m_pVTProvider ? m_pVTProvider->GetDefaultFontIndex() : -1;
+}
+
+FX_BOOL CPDF_VariableText::IsLatinWord(uint16_t word) {
+  return m_pVTProvider ? m_pVTProvider->IsLatinWord(word) : FALSE;
+}
+
+CPDF_VariableText::Iterator* CPDF_VariableText::GetIterator() {
+  if (!m_pVTIterator)
+    m_pVTIterator = new CPDF_VariableText::Iterator(this);
+  return m_pVTIterator;
+}
+
+CPDF_VariableText::Provider* CPDF_VariableText::SetProvider(
+    CPDF_VariableText::Provider* pProvider) {
+  CPDF_VariableText::Provider* pOld = m_pVTProvider;
+  m_pVTProvider = pProvider;
+  return pOld;
+}