Rename text break files to match class names.

This CL renames several fgas/layout files to match the class names
contained in the files.

Change-Id: Ib4feaa902618e577261e51dbac743cb4cb500ea1
Reviewed-on: https://pdfium-review.googlesource.com/4290
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>

1 files changed, 0 insertions, 790 deletions

diff --git a/xfa/fgas/layout/fgas_rtfbreak.cpp b/xfa/fgas/layout/fgas_rtfbreak.cpp
deleted file mode 100644
index 842e729217..0000000000
--- a/xfa/fgas/layout/fgas_rtfbreak.cpp
+++ /dev/null
@@ -1,790 +0,0 @@
-// Copyright 2014 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 "xfa/fgas/layout/fgas_rtfbreak.h"
-
-#include <algorithm>
-
-#include "core/fxcrt/fx_arabic.h"
-#include "third_party/base/stl_util.h"
-#include "xfa/fgas/font/cfgas_gefont.h"
-#include "xfa/fgas/layout/fgas_linebreak.h"
-
-CFX_RTFBreak::CFX_RTFBreak(uint32_t dwLayoutStyles)
-    : CFX_Break(dwLayoutStyles),
-      m_bPagination(false),
-      m_iAlignment(CFX_RTFLineAlignment::Left),
-      m_pUserData(nullptr) {
-  SetBreakStatus();
-  m_bPagination = !!(m_dwLayoutStyles & FX_LAYOUTSTYLE_Pagination);
-}
-
-CFX_RTFBreak::~CFX_RTFBreak() {}
-
-void CFX_RTFBreak::SetLineStartPos(float fLinePos) {
-  int32_t iLinePos = FXSYS_round(fLinePos * 20000.0f);
-  iLinePos = std::min(iLinePos, m_iLineWidth);
-  iLinePos = std::max(iLinePos, m_iLineStart);
-  m_pCurLine->m_iStart = iLinePos;
-}
-
-void CFX_RTFBreak::AddPositionedTab(float fTabPos) {
-  int32_t iTabPos =
-      std::min(FXSYS_round(fTabPos * 20000.0f) + m_iLineStart, m_iLineWidth);
-  auto it = std::lower_bound(m_PositionedTabs.begin(), m_PositionedTabs.end(),
-                             iTabPos);
-  if (it != m_PositionedTabs.end() && *it == iTabPos)
-    return;
-  m_PositionedTabs.insert(it, iTabPos);
-}
-
-void CFX_RTFBreak::SetUserData(const CFX_RetainPtr<CFX_Retainable>& pUserData) {
-  if (m_pUserData == pUserData)
-    return;
-
-  SetBreakStatus();
-  m_pUserData = pUserData;
-}
-
-int32_t CFX_RTFBreak::GetLastPositionedTab() const {
-  return m_PositionedTabs.empty() ? m_iLineStart : m_PositionedTabs.back();
-}
-
-bool CFX_RTFBreak::GetPositionedTab(int32_t* iTabPos) const {
-  auto it = std::upper_bound(m_PositionedTabs.begin(), m_PositionedTabs.end(),
-                             *iTabPos);
-  if (it == m_PositionedTabs.end())
-    return false;
-
-  *iTabPos = *it;
-  return true;
-}
-
-CFX_BreakType CFX_RTFBreak::AppendChar(wchar_t wch) {
-  ASSERT(m_pFont && m_pCurLine);
-
-  uint32_t dwProps = kTextLayoutCodeProperties[static_cast<uint16_t>(wch)];
-  FX_CHARTYPE chartype = GetCharTypeFromProp(dwProps);
-  m_pCurLine->m_LineChars.emplace_back();
-
-  CFX_Char* pCurChar = &m_pCurLine->m_LineChars.back();
-  pCurChar->m_dwStatus = CFX_BreakType::None;
-  pCurChar->m_wCharCode = wch;
-  pCurChar->m_dwCharProps = dwProps;
-  pCurChar->m_iFontSize = m_iFontSize;
-  pCurChar->m_iHorizontalScale = m_iHorizontalScale;
-  pCurChar->m_iVerticalScale = m_iVerticalScale;
-  pCurChar->m_iCharWidth = 0;
-  pCurChar->m_dwIdentity = m_dwIdentity;
-  pCurChar->m_pUserData = m_pUserData;
-
-  CFX_BreakType dwRet1 = CFX_BreakType::None;
-  if (chartype != FX_CHARTYPE_Combination &&
-      GetUnifiedCharType(m_eCharType) != GetUnifiedCharType(chartype) &&
-      m_eCharType != FX_CHARTYPE_Unknown &&
-      m_pCurLine->GetLineEnd() > m_iLineWidth + m_iTolerance &&
-      (m_eCharType != FX_CHARTYPE_Space || chartype != FX_CHARTYPE_Control)) {
-    dwRet1 = EndBreak(CFX_BreakType::Line);
-    int32_t iCount = m_pCurLine->CountChars();
-    if (iCount > 0)
-      pCurChar = &m_pCurLine->m_LineChars[iCount - 1];
-  }
-
-  CFX_BreakType dwRet2 = CFX_BreakType::None;
-  switch (chartype) {
-    case FX_CHARTYPE_Tab:
-      AppendChar_Tab(pCurChar);
-      break;
-    case FX_CHARTYPE_Control:
-      dwRet2 = AppendChar_Control(pCurChar);
-      break;
-    case FX_CHARTYPE_Combination:
-      AppendChar_Combination(pCurChar);
-      break;
-    case FX_CHARTYPE_ArabicAlef:
-    case FX_CHARTYPE_ArabicSpecial:
-    case FX_CHARTYPE_ArabicDistortion:
-    case FX_CHARTYPE_ArabicNormal:
-    case FX_CHARTYPE_ArabicForm:
-    case FX_CHARTYPE_Arabic:
-      dwRet2 = AppendChar_Arabic(pCurChar);
-      break;
-    case FX_CHARTYPE_Unknown:
-    case FX_CHARTYPE_Space:
-    case FX_CHARTYPE_Numeric:
-    case FX_CHARTYPE_Normal:
-    default:
-      dwRet2 = AppendChar_Others(pCurChar);
-      break;
-  }
-
-  m_eCharType = chartype;
-  return std::max(dwRet1, dwRet2);
-}
-
-void CFX_RTFBreak::AppendChar_Combination(CFX_Char* pCurChar) {
-  int32_t iCharWidth = 0;
-  if (!m_pFont->GetCharWidth(pCurChar->m_wCharCode, iCharWidth, false))
-    iCharWidth = 0;
-
-  iCharWidth *= m_iFontSize;
-  iCharWidth = iCharWidth * m_iHorizontalScale / 100;
-  CFX_Char* pLastChar = GetLastChar(0, false, true);
-  if (pLastChar && pLastChar->GetCharType() > FX_CHARTYPE_Combination)
-    iCharWidth = -iCharWidth;
-  else
-    m_eCharType = FX_CHARTYPE_Combination;
-
-  pCurChar->m_iCharWidth = iCharWidth;
-  if (iCharWidth > 0)
-    m_pCurLine->m_iWidth += iCharWidth;
-}
-
-void CFX_RTFBreak::AppendChar_Tab(CFX_Char* pCurChar) {
-  if (!(m_dwLayoutStyles & FX_LAYOUTSTYLE_ExpandTab))
-    return;
-
-  int32_t& iLineWidth = m_pCurLine->m_iWidth;
-  int32_t iCharWidth = iLineWidth;
-  if (GetPositionedTab(&iCharWidth))
-    iCharWidth -= iLineWidth;
-  else
-    iCharWidth = m_iTabWidth * (iLineWidth / m_iTabWidth + 1) - iLineWidth;
-
-  pCurChar->m_iCharWidth = iCharWidth;
-  iLineWidth += iCharWidth;
-}
-
-CFX_BreakType CFX_RTFBreak::AppendChar_Control(CFX_Char* pCurChar) {
-  CFX_BreakType dwRet2 = CFX_BreakType::None;
-  switch (pCurChar->m_wCharCode) {
-    case L'\v':
-    case 0x2028:
-      dwRet2 = CFX_BreakType::Line;
-      break;
-    case L'\f':
-      dwRet2 = CFX_BreakType::Page;
-      break;
-    case 0x2029:
-      dwRet2 = CFX_BreakType::Paragraph;
-      break;
-    default:
-      if (pCurChar->m_wCharCode == m_wParagraphBreakChar)
-        dwRet2 = CFX_BreakType::Paragraph;
-      break;
-  }
-  if (dwRet2 != CFX_BreakType::None)
-    dwRet2 = EndBreak(dwRet2);
-
-  return dwRet2;
-}
-
-CFX_BreakType CFX_RTFBreak::AppendChar_Arabic(CFX_Char* pCurChar) {
-  CFX_Char* pLastChar = nullptr;
-  int32_t iCharWidth = 0;
-  wchar_t wForm;
-  bool bAlef = false;
-  if (m_eCharType >= FX_CHARTYPE_ArabicAlef &&
-      m_eCharType <= FX_CHARTYPE_ArabicDistortion) {
-    pLastChar = GetLastChar(1, false, true);
-    if (pLastChar) {
-      m_pCurLine->m_iWidth -= pLastChar->m_iCharWidth;
-      CFX_Char* pPrevChar = GetLastChar(2, false, true);
-      wForm = pdfium::arabic::GetFormChar(pLastChar, pPrevChar, pCurChar);
-      bAlef = (wForm == 0xFEFF &&
-               pLastChar->GetCharType() == FX_CHARTYPE_ArabicAlef);
-      if (!m_pFont->GetCharWidth(wForm, iCharWidth, false) &&
-          !m_pFont->GetCharWidth(pLastChar->m_wCharCode, iCharWidth, false)) {
-        iCharWidth = m_iDefChar;
-      }
-
-      iCharWidth *= m_iFontSize;
-      iCharWidth = iCharWidth * m_iHorizontalScale / 100;
-      pLastChar->m_iCharWidth = iCharWidth;
-      m_pCurLine->m_iWidth += iCharWidth;
-      iCharWidth = 0;
-    }
-  }
-
-  wForm = pdfium::arabic::GetFormChar(pCurChar, bAlef ? nullptr : pLastChar,
-                                      nullptr);
-  if (!m_pFont->GetCharWidth(wForm, iCharWidth, false) &&
-      !m_pFont->GetCharWidth(pCurChar->m_wCharCode, iCharWidth, false)) {
-    iCharWidth = m_iDefChar;
-  }
-
-  iCharWidth *= m_iFontSize;
-  iCharWidth = iCharWidth * m_iHorizontalScale / 100;
-  pCurChar->m_iCharWidth = iCharWidth;
-  m_pCurLine->m_iWidth += iCharWidth;
-  m_pCurLine->m_iArabicChars++;
-
-  if (m_pCurLine->GetLineEnd() > m_iLineWidth + m_iTolerance)
-    return EndBreak(CFX_BreakType::Line);
-  return CFX_BreakType::None;
-}
-
-CFX_BreakType CFX_RTFBreak::AppendChar_Others(CFX_Char* pCurChar) {
-  FX_CHARTYPE chartype = pCurChar->GetCharType();
-  wchar_t wForm = pCurChar->m_wCharCode;
-  int32_t iCharWidth = 0;
-  if (!m_pFont->GetCharWidth(wForm, iCharWidth, false))
-    iCharWidth = m_iDefChar;
-
-  iCharWidth *= m_iFontSize;
-  iCharWidth *= m_iHorizontalScale / 100;
-  iCharWidth += m_iCharSpace;
-
-  pCurChar->m_iCharWidth = iCharWidth;
-  m_pCurLine->m_iWidth += iCharWidth;
-  if (chartype != FX_CHARTYPE_Space &&
-      m_pCurLine->GetLineEnd() > m_iLineWidth + m_iTolerance) {
-    return EndBreak(CFX_BreakType::Line);
-  }
-  return CFX_BreakType::None;
-}
-
-CFX_BreakType CFX_RTFBreak::EndBreak(CFX_BreakType dwStatus) {
-  ASSERT(dwStatus != CFX_BreakType::None);
-
-  ++m_dwIdentity;
-  if (!m_pCurLine->m_LinePieces.empty()) {
-    if (dwStatus != CFX_BreakType::Piece)
-      m_pCurLine->m_LinePieces.back().m_dwStatus = dwStatus;
-    return m_pCurLine->m_LinePieces.back().m_dwStatus;
-  }
-
-  if (HasLine()) {
-    if (!m_Line[m_iReadyLineIndex].m_LinePieces.empty()) {
-      if (dwStatus != CFX_BreakType::Piece)
-        m_Line[m_iReadyLineIndex].m_LinePieces.back().m_dwStatus = dwStatus;
-      return m_Line[m_iReadyLineIndex].m_LinePieces.back().m_dwStatus;
-    }
-    return CFX_BreakType::None;
-  }
-
-  int32_t iCount = m_pCurLine->CountChars();
-  if (iCount < 1)
-    return CFX_BreakType::None;
-
-  CFX_Char* tc = m_pCurLine->GetChar(iCount - 1);
-  tc->m_dwStatus = dwStatus;
-  if (dwStatus == CFX_BreakType::Piece)
-    return dwStatus;
-
-  m_iReadyLineIndex = m_pCurLine == &m_Line[0] ? 0 : 1;
-  CFX_BreakLine* pNextLine = &m_Line[1 - m_iReadyLineIndex];
-  bool bAllChars = m_iAlignment == CFX_RTFLineAlignment::Justified ||
-                   m_iAlignment == CFX_RTFLineAlignment::Distributed;
-
-  if (!EndBreak_SplitLine(pNextLine, bAllChars, dwStatus)) {
-    std::deque<FX_TPO> tpos;
-    EndBreak_BidiLine(&tpos, dwStatus);
-    if (!m_bPagination && m_iAlignment != CFX_RTFLineAlignment::Left)
-      EndBreak_Alignment(tpos, bAllChars, dwStatus);
-  }
-  m_pCurLine = pNextLine;
-  m_pCurLine->m_iStart = m_iLineStart;
-
-  CFX_Char* pTC = GetLastChar(0, false, true);
-  m_eCharType = pTC ? pTC->GetCharType() : FX_CHARTYPE_Unknown;
-  return dwStatus;
-}
-
-bool CFX_RTFBreak::EndBreak_SplitLine(CFX_BreakLine* pNextLine,
-                                      bool bAllChars,
-                                      CFX_BreakType dwStatus) {
-  bool bDone = false;
-  if (m_pCurLine->GetLineEnd() > m_iLineWidth + m_iTolerance) {
-    const CFX_Char* tc = m_pCurLine->GetChar(m_pCurLine->CountChars() - 1);
-    switch (tc->GetCharType()) {
-      case FX_CHARTYPE_Tab:
-      case FX_CHARTYPE_Control:
-      case FX_CHARTYPE_Space:
-        break;
-      default:
-        SplitTextLine(m_pCurLine, pNextLine, !m_bPagination && bAllChars);
-        bDone = true;
-        break;
-    }
-  }
-
-  if (!m_bPagination) {
-    if (bAllChars && !bDone) {
-      int32_t endPos = m_pCurLine->GetLineEnd();
-      GetBreakPos(m_pCurLine->m_LineChars, endPos, bAllChars, true);
-    }
-    return false;
-  }
-
-  const CFX_Char* pCurChars = m_pCurLine->m_LineChars.data();
-  CFX_BreakPiece tp;
-  tp.m_pChars = &m_pCurLine->m_LineChars;
-  bool bNew = true;
-  uint32_t dwIdentity = static_cast<uint32_t>(-1);
-  int32_t iLast = m_pCurLine->CountChars() - 1;
-  int32_t j = 0;
-  for (int32_t i = 0; i <= iLast;) {
-    const CFX_Char* pTC = pCurChars + i;
-    if (bNew) {
-      tp.m_iStartChar = i;
-      tp.m_iStartPos += tp.m_iWidth;
-      tp.m_iWidth = 0;
-      tp.m_dwStatus = pTC->m_dwStatus;
-      tp.m_iFontSize = pTC->m_iFontSize;
-      tp.m_iHorizontalScale = pTC->m_iHorizontalScale;
-      tp.m_iVerticalScale = pTC->m_iVerticalScale;
-      dwIdentity = pTC->m_dwIdentity;
-      tp.m_dwIdentity = dwIdentity;
-      tp.m_pUserData = pTC->m_pUserData;
-      j = i;
-      bNew = false;
-    }
-
-    if (i == iLast || pTC->m_dwStatus != CFX_BreakType::None ||
-        pTC->m_dwIdentity != dwIdentity) {
-      tp.m_iChars = i - j;
-      if (pTC->m_dwIdentity == dwIdentity) {
-        tp.m_dwStatus = pTC->m_dwStatus;
-        tp.m_iWidth += pTC->m_iCharWidth;
-        tp.m_iChars += 1;
-        ++i;
-      }
-      m_pCurLine->m_LinePieces.push_back(tp);
-      bNew = true;
-    } else {
-      tp.m_iWidth += pTC->m_iCharWidth;
-      ++i;
-    }
-  }
-  return true;
-}
-
-void CFX_RTFBreak::EndBreak_BidiLine(std::deque<FX_TPO>* tpos,
-                                     CFX_BreakType dwStatus) {
-  CFX_Char* pTC;
-  std::vector<CFX_Char>& chars = m_pCurLine->m_LineChars;
-  int32_t iCount = m_pCurLine->CountChars();
-  if (!m_bPagination && m_pCurLine->m_iArabicChars > 0) {
-    int32_t iBidiNum = 0;
-    for (int32_t i = 0; i < iCount; ++i) {
-      pTC = &chars[i];
-      pTC->m_iBidiPos = i;
-      if (pTC->GetCharType() != FX_CHARTYPE_Control)
-        iBidiNum = i;
-      if (i == 0)
-        pTC->m_iBidiLevel = 1;
-    }
-    FX_BidiLine(&chars, iBidiNum + 1);
-  } else {
-    for (int32_t i = 0; i < iCount; ++i) {
-      pTC = &chars[i];
-      pTC->m_iBidiLevel = 0;
-      pTC->m_iBidiPos = 0;
-      pTC->m_iBidiOrder = 0;
-    }
-  }
-
-  CFX_BreakPiece tp;
-  tp.m_dwStatus = CFX_BreakType::Piece;
-  tp.m_iStartPos = m_pCurLine->m_iStart;
-  tp.m_pChars = &chars;
-
-  int32_t iBidiLevel = -1;
-  int32_t iCharWidth;
-  FX_TPO tpo;
-  uint32_t dwIdentity = static_cast<uint32_t>(-1);
-  int32_t i = 0;
-  int32_t j = 0;
-  while (i < iCount) {
-    pTC = &chars[i];
-    if (iBidiLevel < 0) {
-      iBidiLevel = pTC->m_iBidiLevel;
-      iCharWidth = pTC->m_iCharWidth;
-      tp.m_iWidth = iCharWidth < 1 ? 0 : iCharWidth;
-      tp.m_iBidiLevel = iBidiLevel;
-      tp.m_iBidiPos = pTC->m_iBidiOrder;
-      tp.m_iFontSize = pTC->m_iFontSize;
-      tp.m_iHorizontalScale = pTC->m_iHorizontalScale;
-      tp.m_iVerticalScale = pTC->m_iVerticalScale;
-      dwIdentity = pTC->m_dwIdentity;
-      tp.m_dwIdentity = dwIdentity;
-      tp.m_pUserData = pTC->m_pUserData;
-      tp.m_dwStatus = CFX_BreakType::Piece;
-      ++i;
-    } else if (iBidiLevel != pTC->m_iBidiLevel ||
-               pTC->m_dwIdentity != dwIdentity) {
-      tp.m_iChars = i - tp.m_iStartChar;
-      m_pCurLine->m_LinePieces.push_back(tp);
-
-      tp.m_iStartPos += tp.m_iWidth;
-      tp.m_iStartChar = i;
-      tpo.index = j++;
-      tpo.pos = tp.m_iBidiPos;
-      tpos->push_back(tpo);
-      iBidiLevel = -1;
-    } else {
-      iCharWidth = pTC->m_iCharWidth;
-      if (iCharWidth > 0)
-        tp.m_iWidth += iCharWidth;
-      ++i;
-    }
-  }
-
-  if (i > tp.m_iStartChar) {
-    tp.m_dwStatus = dwStatus;
-    tp.m_iChars = i - tp.m_iStartChar;
-    m_pCurLine->m_LinePieces.push_back(tp);
-
-    tpo.index = j;
-    tpo.pos = tp.m_iBidiPos;
-    tpos->push_back(tpo);
-  }
-
-  std::sort(tpos->begin(), tpos->end());
-  int32_t iStartPos = m_pCurLine->m_iStart;
-  for (const auto& it : *tpos) {
-    CFX_BreakPiece& ttp = m_pCurLine->m_LinePieces[it.index];
-    ttp.m_iStartPos = iStartPos;
-    iStartPos += ttp.m_iWidth;
-  }
-}
-
-void CFX_RTFBreak::EndBreak_Alignment(const std::deque<FX_TPO>& tpos,
-                                      bool bAllChars,
-                                      CFX_BreakType dwStatus) {
-  int32_t iNetWidth = m_pCurLine->m_iWidth;
-  int32_t iGapChars = 0;
-  bool bFind = false;
-  for (auto it = tpos.rbegin(); it != tpos.rend(); it++) {
-    CFX_BreakPiece& ttp = m_pCurLine->m_LinePieces[it->index];
-    if (!bFind)
-      iNetWidth = ttp.GetEndPos();
-
-    bool bArabic = FX_IsOdd(ttp.m_iBidiLevel);
-    int32_t j = bArabic ? 0 : ttp.m_iChars - 1;
-    while (j > -1 && j < ttp.m_iChars) {
-      const CFX_Char* tc = ttp.GetChar(j);
-      if (tc->m_nBreakType == FX_LBT_DIRECT_BRK)
-        ++iGapChars;
-
-      if (!bFind || !bAllChars) {
-        uint32_t dwCharType = tc->GetCharType();
-        if (dwCharType == FX_CHARTYPE_Space ||
-            dwCharType == FX_CHARTYPE_Control) {
-          if (!bFind) {
-            int32_t iCharWidth = tc->m_iCharWidth;
-            if (bAllChars && iCharWidth > 0)
-              iNetWidth -= iCharWidth;
-          }
-        } else {
-          bFind = true;
-          if (!bAllChars)
-            break;
-        }
-      }
-      j += bArabic ? 1 : -1;
-    }
-    if (!bAllChars && bFind)
-      break;
-  }
-
-  int32_t iOffset = m_iLineWidth - iNetWidth;
-  if (iGapChars > 0 && (m_iAlignment == CFX_RTFLineAlignment::Distributed ||
-                        (m_iAlignment == CFX_RTFLineAlignment::Justified &&
-                         dwStatus != CFX_BreakType::Paragraph))) {
-    int32_t iStart = -1;
-    for (const auto& tpo : tpos) {
-      CFX_BreakPiece& ttp = m_pCurLine->m_LinePieces[tpo.index];
-      if (iStart < 0)
-        iStart = ttp.m_iStartPos;
-      else
-        ttp.m_iStartPos = iStart;
-
-      for (int32_t j = 0; j < ttp.m_iChars; ++j) {
-        CFX_Char* tc = ttp.GetChar(j);
-        if (tc->m_nBreakType != FX_LBT_DIRECT_BRK || tc->m_iCharWidth < 0)
-          continue;
-
-        int32_t k = iOffset / iGapChars;
-        tc->m_iCharWidth += k;
-        ttp.m_iWidth += k;
-        iOffset -= k;
-        --iGapChars;
-        if (iGapChars < 1)
-          break;
-      }
-      iStart += ttp.m_iWidth;
-    }
-  } else if (m_iAlignment == CFX_RTFLineAlignment::Right ||
-             m_iAlignment == CFX_RTFLineAlignment::Center) {
-    if (m_iAlignment == CFX_RTFLineAlignment::Center)
-      iOffset /= 2;
-    if (iOffset > 0) {
-      for (auto& ttp : m_pCurLine->m_LinePieces)
-        ttp.m_iStartPos += iOffset;
-    }
-  }
-}
-
-int32_t CFX_RTFBreak::GetBreakPos(std::vector<CFX_Char>& tca,
-                                  int32_t& iEndPos,
-                                  bool bAllChars,
-                                  bool bOnlyBrk) {
-  int32_t iLength = pdfium::CollectionSize<int32_t>(tca) - 1;
-  if (iLength < 1)
-    return iLength;
-
-  int32_t iBreak = -1;
-  int32_t iBreakPos = -1;
-  int32_t iIndirect = -1;
-  int32_t iIndirectPos = -1;
-  int32_t iLast = -1;
-  int32_t iLastPos = -1;
-  if (iEndPos <= m_iLineWidth) {
-    if (!bAllChars)
-      return iLength;
-
-    iBreak = iLength;
-    iBreakPos = iEndPos;
-  }
-
-  CFX_Char* pCharArray = tca.data();
-  CFX_Char* pCur = pCharArray + iLength;
-  --iLength;
-  if (bAllChars)
-    pCur->m_nBreakType = FX_LBT_UNKNOWN;
-
-  uint32_t nCodeProp = pCur->m_dwCharProps;
-  uint32_t nNext = nCodeProp & 0x003F;
-  int32_t iCharWidth = pCur->m_iCharWidth;
-  if (iCharWidth > 0)
-    iEndPos -= iCharWidth;
-
-  while (iLength >= 0) {
-    pCur = pCharArray + iLength;
-    nCodeProp = pCur->m_dwCharProps;
-    uint32_t nCur = nCodeProp & 0x003F;
-    bool bNeedBreak = false;
-    FX_LINEBREAKTYPE eType;
-    if (nCur == FX_CBP_TB) {
-      bNeedBreak = true;
-      eType = nNext == FX_CBP_TB ? FX_LBT_PROHIBITED_BRK
-                                 : gs_FX_LineBreak_PairTable[nCur][nNext];
-    } else {
-      if (nCur == FX_CBP_SP)
-        bNeedBreak = true;
-
-      eType = nNext == FX_CBP_SP ? FX_LBT_PROHIBITED_BRK
-                                 : gs_FX_LineBreak_PairTable[nCur][nNext];
-    }
-    if (bAllChars)
-      pCur->m_nBreakType = eType;
-
-    if (!bOnlyBrk) {
-      iCharWidth = pCur->m_iCharWidth;
-      if (iEndPos <= m_iLineWidth || bNeedBreak) {
-        if (eType == FX_LBT_DIRECT_BRK && iBreak < 0) {
-          iBreak = iLength;
-          iBreakPos = iEndPos;
-          if (!bAllChars)
-            return iLength;
-        } else if (eType == FX_LBT_INDIRECT_BRK && iIndirect < 0) {
-          iIndirect = iLength;
-          iIndirectPos = iEndPos;
-        }
-        if (iLast < 0) {
-          iLast = iLength;
-          iLastPos = iEndPos;
-        }
-      }
-      if (iCharWidth > 0)
-        iEndPos -= iCharWidth;
-    }
-    nNext = nCodeProp & 0x003F;
-    --iLength;
-  }
-  if (bOnlyBrk)
-    return 0;
-
-  if (iBreak > -1) {
-    iEndPos = iBreakPos;
-    return iBreak;
-  }
-  if (iIndirect > -1) {
-    iEndPos = iIndirectPos;
-    return iIndirect;
-  }
-  if (iLast > -1) {
-    iEndPos = iLastPos;
-    return iLast;
-  }
-  return 0;
-}
-
-void CFX_RTFBreak::SplitTextLine(CFX_BreakLine* pCurLine,
-                                 CFX_BreakLine* pNextLine,
-                                 bool bAllChars) {
-  ASSERT(pCurLine && pNextLine);
-  int32_t iCount = pCurLine->CountChars();
-  if (iCount < 2)
-    return;
-
-  int32_t iEndPos = pCurLine->GetLineEnd();
-  std::vector<CFX_Char>& curChars = pCurLine->m_LineChars;
-  int32_t iCharPos = GetBreakPos(curChars, iEndPos, bAllChars, false);
-  if (iCharPos < 0)
-    iCharPos = 0;
-
-  ++iCharPos;
-  if (iCharPos >= iCount) {
-    pNextLine->Clear();
-    curChars[iCharPos - 1].m_nBreakType = FX_LBT_UNKNOWN;
-    return;
-  }
-
-  pNextLine->m_LineChars =
-      std::vector<CFX_Char>(curChars.begin() + iCharPos, curChars.end());
-  curChars.erase(curChars.begin() + iCharPos, curChars.end());
-  pNextLine->m_iStart = pCurLine->m_iStart;
-  pNextLine->m_iWidth = pCurLine->GetLineEnd() - iEndPos;
-  pCurLine->m_iWidth = iEndPos;
-  curChars[iCharPos - 1].m_nBreakType = FX_LBT_UNKNOWN;
-
-  for (size_t i = 0; i < pNextLine->m_LineChars.size(); ++i) {
-    if (pNextLine->m_LineChars[i].GetCharType() >= FX_CHARTYPE_ArabicAlef) {
-      pCurLine->m_iArabicChars--;
-      pNextLine->m_iArabicChars++;
-    }
-    pNextLine->m_LineChars[i].m_dwStatus = CFX_BreakType::None;
-  }
-}
-
-int32_t CFX_RTFBreak::GetDisplayPos(const FX_RTFTEXTOBJ* pText,
-                                    FXTEXT_CHARPOS* pCharPos,
-                                    bool bCharCode) const {
-  if (!pText || pText->iLength < 1)
-    return 0;
-
-  ASSERT(pText->pFont && pText->pRect);
-
-  CFX_RetainPtr<CFGAS_GEFont> pFont = pText->pFont;
-  CFX_RectF rtText(*pText->pRect);
-  bool bRTLPiece = FX_IsOdd(pText->iBidiLevel);
-  float fFontSize = pText->fFontSize;
-  int32_t iFontSize = FXSYS_round(fFontSize * 20.0f);
-  int32_t iAscent = pFont->GetAscent();
-  int32_t iDescent = pFont->GetDescent();
-  int32_t iMaxHeight = iAscent - iDescent;
-  float fFontHeight = fFontSize;
-  float fAscent = fFontHeight * static_cast<float>(iAscent) /
-                  static_cast<float>(iMaxHeight);
-  wchar_t wPrev = 0xFEFF;
-  wchar_t wNext;
-  float fX = rtText.left;
-  int32_t iHorScale = pText->iHorizontalScale;
-  int32_t iVerScale = pText->iVerticalScale;
-  if (bRTLPiece)
-    fX = rtText.right();
-
-  float fY = rtText.top + fAscent;
-  int32_t iCount = 0;
-  for (int32_t i = 0; i < pText->iLength; ++i) {
-    wchar_t wch = pText->pStr[i];
-    int32_t iWidth = pText->pWidths[i];
-    uint32_t dwProps = FX_GetUnicodeProperties(wch);
-    uint32_t dwCharType = (dwProps & FX_CHARTYPEBITSMASK);
-    if (iWidth == 0) {
-      if (dwCharType == FX_CHARTYPE_ArabicAlef)
-        wPrev = 0xFEFF;
-      continue;
-    }
-
-    int32_t iCharWidth = abs(iWidth);
-    bool bEmptyChar =
-        (dwCharType >= FX_CHARTYPE_Tab && dwCharType <= FX_CHARTYPE_Control);
-    if (!bEmptyChar)
-      ++iCount;
-
-    if (pCharPos) {
-      iCharWidth /= iFontSize;
-      wchar_t wForm = wch;
-      if (dwCharType >= FX_CHARTYPE_ArabicAlef) {
-        if (i + 1 < pText->iLength) {
-          wNext = pText->pStr[i + 1];
-          if (pText->pWidths[i + 1] < 0 && i + 2 < pText->iLength)
-            wNext = pText->pStr[i + 2];
-        } else {
-          wNext = 0xFEFF;
-        }
-        wForm = pdfium::arabic::GetFormChar(wch, wPrev, wNext);
-      } else if (bRTLPiece) {
-        wForm = FX_GetMirrorChar(wch, dwProps, bRTLPiece, false);
-      }
-      dwProps = FX_GetUnicodeProperties(wForm);
-
-      if (!bEmptyChar) {
-        if (bCharCode) {
-          pCharPos->m_GlyphIndex = wch;
-        } else {
-          pCharPos->m_GlyphIndex = pFont->GetGlyphIndex(wForm, false);
-          if (pCharPos->m_GlyphIndex == 0xFFFF)
-            pCharPos->m_GlyphIndex = pFont->GetGlyphIndex(wch, false);
-        }
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
-        pCharPos->m_ExtGID = pCharPos->m_GlyphIndex;
-#endif
-        pCharPos->m_FontCharWidth = iCharWidth;
-      }
-
-      float fCharWidth = fFontSize * iCharWidth / 1000.0f;
-      if (bRTLPiece && dwCharType != FX_CHARTYPE_Combination)
-        fX -= fCharWidth;
-
-      if (!bEmptyChar)
-        pCharPos->m_Origin = CFX_PointF(fX, fY);
-      if (!bRTLPiece && dwCharType != FX_CHARTYPE_Combination)
-        fX += fCharWidth;
-
-      if (!bEmptyChar) {
-        pCharPos->m_bGlyphAdjust = true;
-        pCharPos->m_AdjustMatrix[0] = -1;
-        pCharPos->m_AdjustMatrix[1] = 0;
-        pCharPos->m_AdjustMatrix[2] = 0;
-        pCharPos->m_AdjustMatrix[3] = 1;
-        pCharPos->m_Origin.y += fAscent * iVerScale / 100.0f;
-        pCharPos->m_Origin.y -= fAscent;
-
-        if (iHorScale != 100 || iVerScale != 100) {
-          pCharPos->m_AdjustMatrix[0] =
-              pCharPos->m_AdjustMatrix[0] * iHorScale / 100.0f;
-          pCharPos->m_AdjustMatrix[1] =
-              pCharPos->m_AdjustMatrix[1] * iHorScale / 100.0f;
-          pCharPos->m_AdjustMatrix[2] =
-              pCharPos->m_AdjustMatrix[2] * iVerScale / 100.0f;
-          pCharPos->m_AdjustMatrix[3] =
-              pCharPos->m_AdjustMatrix[3] * iVerScale / 100.0f;
-        }
-        ++pCharPos;
-      }
-    }
-    if (iWidth > 0)
-      wPrev = wch;
-  }
-  return iCount;
-}
-
-FX_RTFTEXTOBJ::FX_RTFTEXTOBJ()
-    : pFont(nullptr),
-      pRect(nullptr),
-      wLineBreakChar(L'\n'),
-      fFontSize(12.0f),
-      iLength(0),
-      iBidiLevel(0),
-      iHorizontalScale(100),
-      iVerticalScale(100) {}
-
-FX_RTFTEXTOBJ::~FX_RTFTEXTOBJ() {}