Fixup RTFBreak and TextBreak nits

Change-Id: Ied5d23e18e9194e66d8be8d1057f55d83faada88
Reviewed-on: https://pdfium-review.googlesource.com/2880
Reviewed-by: Nicolás Peña <npm@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

5 files changed, 580 insertions, 594 deletions

diff --git a/core/fxcrt/fx_ucd.h b/core/fxcrt/fx_ucd.h
index aa6dc5d118..eb4bad097e 100644
--- a/core/fxcrt/fx_ucd.h
+++ b/core/fxcrt/fx_ucd.h
@@ -156,6 +156,7 @@ class CFX_TxtChar : public CFX_Char {
         m_iBidiPos(0),
         m_iBidiOrder(0),
         m_pUserData(nullptr) {}
+
   int8_t m_nRotation;
   uint32_t m_dwCharStyles;
   uint32_t m_dwStatus;
diff --git a/xfa/fgas/layout/fgas_rtfbreak.cpp b/xfa/fgas/layout/fgas_rtfbreak.cpp
index a3bf58c27b..e2cfaaaec3 100644
--- a/xfa/fgas/layout/fgas_rtfbreak.cpp
+++ b/xfa/fgas/layout/fgas_rtfbreak.cpp
@@ -15,6 +15,23 @@
 #include "xfa/fgas/layout/fgas_linebreak.h"
 #include "xfa/fgas/layout/fgas_unicode.h"
 
+namespace {
+
+typedef CFX_RTFBreakType (CFX_RTFBreak::*FX_RTFBreak_LPFAppendChar)(
+    CFX_RTFChar* pCurChar);
+const FX_RTFBreak_LPFAppendChar g_FX_RTFBreak_lpfAppendChar[16] = {
+    &CFX_RTFBreak::AppendChar_Others,      &CFX_RTFBreak::AppendChar_Tab,
+    &CFX_RTFBreak::AppendChar_Others,      &CFX_RTFBreak::AppendChar_Control,
+    &CFX_RTFBreak::AppendChar_Combination, &CFX_RTFBreak::AppendChar_Others,
+    &CFX_RTFBreak::AppendChar_Others,      &CFX_RTFBreak::AppendChar_Arabic,
+    &CFX_RTFBreak::AppendChar_Arabic,      &CFX_RTFBreak::AppendChar_Arabic,
+    &CFX_RTFBreak::AppendChar_Arabic,      &CFX_RTFBreak::AppendChar_Arabic,
+    &CFX_RTFBreak::AppendChar_Arabic,      &CFX_RTFBreak::AppendChar_Others,
+    &CFX_RTFBreak::AppendChar_Others,      &CFX_RTFBreak::AppendChar_Others,
+};
+
+}  // namespace
+
 CFX_RTFBreak::CFX_RTFBreak(uint32_t dwLayoutStyles)
     : m_iBoundaryStart(0),
       m_iBoundaryEnd(2000000),
@@ -74,31 +91,30 @@ void CFX_RTFBreak::SetFont(const CFX_RetainPtr<CFGAS_GEFont>& pFont) {
 
   SetBreakStatus();
   m_pFont = pFont;
-  m_iDefChar = 0;
-  if (m_pFont) {
-    m_iFontHeight = m_iFontSize;
-    if (m_wDefChar != 0xFEFF) {
-      m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
-      m_iDefChar *= m_iFontSize;
-    }
-  }
+  FontChanged();
 }
 
 void CFX_RTFBreak::SetFontSize(FX_FLOAT fFontSize) {
   int32_t iFontSize = FXSYS_round(fFontSize * 20.0f);
-  if (m_iFontSize == iFontSize) {
+  if (m_iFontSize == iFontSize)
     return;
-  }
+
   SetBreakStatus();
   m_iFontSize = iFontSize;
+  FontChanged();
+}
+
+void CFX_RTFBreak::FontChanged() {
   m_iDefChar = 0;
-  if (m_pFont) {
-    m_iFontHeight = m_iFontSize;
-    if (m_wDefChar != 0xFEFF) {
-      m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
-      m_iDefChar *= m_iFontSize;
-    }
-  }
+  if (!m_pFont)
+    return;
+
+  m_iFontHeight = m_iFontSize;
+  if (m_wDefChar == 0xFEFF)
+    return;
+
+  m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
+  m_iDefChar *= m_iFontSize;
 }
 
 void CFX_RTFBreak::SetTabWidth(FX_FLOAT fTabWidth) {
@@ -172,32 +188,31 @@ void CFX_RTFBreak::SetBreakStatus() {
 CFX_RTFChar* CFX_RTFBreak::GetLastChar(int32_t index) const {
   std::vector<CFX_RTFChar>& tca = m_pCurLine->m_LineChars;
   int32_t iCount = pdfium::CollectionSize<int32_t>(tca);
-  if (index < 0 || index >= iCount) {
+  if (index < 0 || index >= iCount)
     return nullptr;
-  }
+
   int32_t iStart = iCount - 1;
   while (iStart > -1) {
     CFX_RTFChar* pTC = &tca[iStart--];
     if (pTC->m_iCharWidth >= 0 ||
         pTC->GetCharType() != FX_CHARTYPE_Combination) {
-      if (--index < 0) {
+      if (--index < 0)
         return pTC;
-      }
     }
   }
   return nullptr;
 }
 
-CFX_RTFLine* CFX_RTFBreak::GetRTFLine() const {
+const CFX_RTFLine* CFX_RTFBreak::GetRTFLine() const {
   if (m_iReady == 1)
-    return (CFX_RTFLine*)&m_RTFLine1;
+    return &m_RTFLine1;
   if (m_iReady == 2)
-    return (CFX_RTFLine*)&m_RTFLine2;
+    return &m_RTFLine2;
   return nullptr;
 }
 
-CFX_RTFPieceArray* CFX_RTFBreak::GetRTFPieces() const {
-  CFX_RTFLine* pRTFLine = GetRTFLine();
+const CFX_RTFPieceArray* CFX_RTFBreak::GetRTFPieces() const {
+  const CFX_RTFLine* pRTFLine = GetRTFLine();
   return pRTFLine ? &pRTFLine->m_LinePieces : nullptr;
 }
 
@@ -205,40 +220,29 @@ inline FX_CHARTYPE CFX_RTFBreak::GetUnifiedCharType(
     FX_CHARTYPE chartype) const {
   return chartype >= FX_CHARTYPE_ArabicAlef ? FX_CHARTYPE_Arabic : chartype;
 }
+
 int32_t CFX_RTFBreak::GetLastPositionedTab() const {
   int32_t iCount = m_PositionedTabs.GetSize();
-  if (iCount < 1) {
+  if (iCount < 1)
     return m_iBoundaryStart;
-  }
   return m_PositionedTabs[iCount - 1];
 }
-bool CFX_RTFBreak::GetPositionedTab(int32_t& iTabPos) const {
+
+bool CFX_RTFBreak::GetPositionedTab(int32_t* iTabPos) const {
   int32_t iCount = m_PositionedTabs.GetSize();
   for (int32_t i = 0; i < iCount; i++) {
-    if (m_PositionedTabs[i] > iTabPos) {
-      iTabPos = m_PositionedTabs[i];
+    if (m_PositionedTabs[i] > *iTabPos) {
+      *iTabPos = m_PositionedTabs[i];
       return true;
     }
   }
   return false;
 }
-typedef CFX_RTFBreakType (CFX_RTFBreak::*FX_RTFBreak_LPFAppendChar)(
-    CFX_RTFChar* pCurChar);
-static const FX_RTFBreak_LPFAppendChar g_FX_RTFBreak_lpfAppendChar[16] = {
-    &CFX_RTFBreak::AppendChar_Others,      &CFX_RTFBreak::AppendChar_Tab,
-    &CFX_RTFBreak::AppendChar_Others,      &CFX_RTFBreak::AppendChar_Control,
-    &CFX_RTFBreak::AppendChar_Combination, &CFX_RTFBreak::AppendChar_Others,
-    &CFX_RTFBreak::AppendChar_Others,      &CFX_RTFBreak::AppendChar_Arabic,
-    &CFX_RTFBreak::AppendChar_Arabic,      &CFX_RTFBreak::AppendChar_Arabic,
-    &CFX_RTFBreak::AppendChar_Arabic,      &CFX_RTFBreak::AppendChar_Arabic,
-    &CFX_RTFBreak::AppendChar_Arabic,      &CFX_RTFBreak::AppendChar_Others,
-    &CFX_RTFBreak::AppendChar_Others,      &CFX_RTFBreak::AppendChar_Others,
-};
 
 CFX_RTFBreakType CFX_RTFBreak::AppendChar(FX_WCHAR wch) {
   ASSERT(m_pFont && m_pCurLine);
 
-  uint32_t dwProps = kTextLayoutCodeProperties[(uint16_t)wch];
+  uint32_t dwProps = kTextLayoutCodeProperties[static_cast<uint16_t>(wch)];
   FX_CHARTYPE chartype = GetCharTypeFromProp(dwProps);
   m_pCurLine->m_LineChars.emplace_back();
 
@@ -253,20 +257,19 @@ CFX_RTFBreakType CFX_RTFBreak::AppendChar(FX_WCHAR wch) {
   pCurChar->m_iCharWidth = 0;
   pCurChar->m_dwIdentity = m_dwIdentity;
   pCurChar->m_pUserData = m_pUserData;
+
   CFX_RTFBreakType dwRet1 = CFX_RTFBreakType::None;
   if (chartype != FX_CHARTYPE_Combination &&
-      GetUnifiedCharType(m_eCharType) != GetUnifiedCharType(chartype)) {
-    if (m_eCharType != FX_CHARTYPE_Unknown &&
-        m_pCurLine->GetLineEnd() > m_iBoundaryEnd + m_iTolerance) {
-      if (m_eCharType != FX_CHARTYPE_Space || chartype != FX_CHARTYPE_Control) {
-        dwRet1 = EndBreak(CFX_RTFBreakType::Line);
-        int32_t iCount = m_pCurLine->CountChars();
-        if (iCount > 0) {
-          pCurChar = &m_pCurLine->m_LineChars[iCount - 1];
-        }
-      }
-    }
+      GetUnifiedCharType(m_eCharType) != GetUnifiedCharType(chartype) &&
+      m_eCharType != FX_CHARTYPE_Unknown &&
+      m_pCurLine->GetLineEnd() > m_iBoundaryEnd + m_iTolerance &&
+      (m_eCharType != FX_CHARTYPE_Space || chartype != FX_CHARTYPE_Control)) {
+    dwRet1 = EndBreak(CFX_RTFBreakType::Line);
+    int32_t iCount = m_pCurLine->CountChars();
+    if (iCount > 0)
+      pCurChar = &m_pCurLine->m_LineChars[iCount - 1];
   }
+
   CFX_RTFBreakType dwRet2 =
       (this->*g_FX_RTFBreak_lpfAppendChar[chartype >> FX_CHARTYPEBITS])(
           pCurChar);
@@ -295,17 +298,18 @@ CFX_RTFBreakType CFX_RTFBreak::AppendChar_Combination(CFX_RTFChar* pCurChar) {
 }
 
 CFX_RTFBreakType CFX_RTFBreak::AppendChar_Tab(CFX_RTFChar* pCurChar) {
-  if (m_dwLayoutStyles & FX_RTFLAYOUTSTYLE_ExpandTab) {
-    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;
+  if (!(m_dwLayoutStyles & FX_RTFLAYOUTSTYLE_ExpandTab))
+    return CFX_RTFBreakType::None;
 
-    pCurChar->m_iCharWidth = iCharWidth;
-    iLineWidth += iCharWidth;
-  }
+  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;
   return CFX_RTFBreakType::None;
 }
 
@@ -323,9 +327,8 @@ CFX_RTFBreakType CFX_RTFBreak::AppendChar_Control(CFX_RTFChar* pCurChar) {
       dwRet2 = CFX_RTFBreakType::Paragraph;
       break;
     default:
-      if (pCurChar->m_wCharCode == m_wLineBreakChar) {
+      if (pCurChar->m_wCharCode == m_wLineBreakChar)
         dwRet2 = CFX_RTFBreakType::Paragraph;
-      }
       break;
   }
   if (dwRet2 != CFX_RTFBreakType::None)
@@ -336,7 +339,6 @@ CFX_RTFBreakType CFX_RTFBreak::AppendChar_Control(CFX_RTFChar* pCurChar) {
 
 CFX_RTFBreakType CFX_RTFBreak::AppendChar_Arabic(CFX_RTFChar* pCurChar) {
   CFX_RTFChar* pLastChar = nullptr;
-  int32_t& iLineWidth = m_pCurLine->m_iWidth;
   int32_t iCharWidth = 0;
   FX_WCHAR wForm;
   bool bAlef = false;
@@ -344,23 +346,24 @@ CFX_RTFBreakType CFX_RTFBreak::AppendChar_Arabic(CFX_RTFChar* pCurChar) {
       m_eCharType <= FX_CHARTYPE_ArabicDistortion) {
     pLastChar = GetLastChar(1);
     if (pLastChar) {
-      iLineWidth -= pLastChar->m_iCharWidth;
+      m_pCurLine->m_iWidth -= pLastChar->m_iCharWidth;
       CFX_RTFChar* pPrevChar = GetLastChar(2);
       wForm = pdfium::arabic::GetFormChar(pLastChar, pPrevChar, pCurChar);
       bAlef = (wForm == 0xFEFF &&
                pLastChar->GetCharType() == FX_CHARTYPE_ArabicAlef);
-      if (!m_pFont->GetCharWidth(wForm, iCharWidth, false)) {
-        if (!m_pFont->GetCharWidth(pLastChar->m_wCharCode, iCharWidth, false))
-          iCharWidth = m_iDefChar;
+      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;
-      iLineWidth += iCharWidth;
+      m_pCurLine->m_iWidth += iCharWidth;
       iCharWidth = 0;
     }
   }
+
   wForm = pdfium::arabic::GetFormChar(pCurChar, bAlef ? nullptr : pLastChar,
                                       nullptr);
   if (!m_pFont->GetCharWidth(wForm, iCharWidth, false) &&
@@ -371,23 +374,17 @@ CFX_RTFBreakType CFX_RTFBreak::AppendChar_Arabic(CFX_RTFChar* pCurChar) {
   iCharWidth *= m_iFontSize;
   iCharWidth = iCharWidth * m_iHorizontalScale / 100;
   pCurChar->m_iCharWidth = iCharWidth;
-  iLineWidth += iCharWidth;
+  m_pCurLine->m_iWidth += iCharWidth;
   m_pCurLine->m_iArabicChars++;
-  if (m_pCurLine->GetLineEnd() > m_iBoundaryEnd + m_iTolerance) {
+
+  if (m_pCurLine->GetLineEnd() > m_iBoundaryEnd + m_iTolerance)
     return EndBreak(CFX_RTFBreakType::Line);
-  }
   return CFX_RTFBreakType::None;
 }
 
 CFX_RTFBreakType CFX_RTFBreak::AppendChar_Others(CFX_RTFChar* pCurChar) {
   FX_CHARTYPE chartype = pCurChar->GetCharType();
-  FX_WCHAR wForm;
-  if (chartype == FX_CHARTYPE_Numeric) {
-    wForm = pCurChar->m_wCharCode;
-  } else {
-    wForm = pCurChar->m_wCharCode;
-  }
-
+  FX_WCHAR wForm = pCurChar->m_wCharCode;
   int32_t iCharWidth = 0;
   if (!m_pFont->GetCharWidth(wForm, iCharWidth, false))
     iCharWidth = m_iDefChar;
@@ -409,7 +406,7 @@ CFX_RTFBreakType CFX_RTFBreak::EndBreak(CFX_RTFBreakType dwStatus) {
   ASSERT(dwStatus != CFX_RTFBreakType::None);
 
   m_dwIdentity++;
-  CFX_RTFPieceArray* pCurPieces = &m_pCurLine->m_LinePieces;
+  const CFX_RTFPieceArray* pCurPieces = &m_pCurLine->m_LinePieces;
   int32_t iCount = pCurPieces->GetSize();
   if (iCount > 0) {
     CFX_RTFPiece* pLastPiece = pCurPieces->GetPtrAt(--iCount);
@@ -420,7 +417,7 @@ CFX_RTFBreakType CFX_RTFBreak::EndBreak(CFX_RTFBreakType dwStatus) {
     return dwStatus;
   }
 
-  CFX_RTFLine* pLastLine = GetRTFLine();
+  const CFX_RTFLine* pLastLine = GetRTFLine();
   if (pLastLine) {
     pCurPieces = &pLastLine->m_LinePieces;
     iCount = pCurPieces->GetSize();
@@ -444,14 +441,14 @@ CFX_RTFBreakType CFX_RTFBreak::EndBreak(CFX_RTFBreakType dwStatus) {
   if (dwStatus == CFX_RTFBreakType::Piece)
     return dwStatus;
 
-  m_iReady = (m_pCurLine == &m_RTFLine1) ? 1 : 2;
+  m_iReady = m_pCurLine == &m_RTFLine1 ? 1 : 2;
   CFX_RTFLine* pNextLine =
-      (m_pCurLine == &m_RTFLine1) ? &m_RTFLine2 : &m_RTFLine1;
+      m_pCurLine == &m_RTFLine1 ? &m_RTFLine2 : &m_RTFLine1;
   bool bAllChars = m_iAlignment == CFX_RTFLineAlignment::Justified ||
                    m_iAlignment == CFX_RTFLineAlignment::Distributed;
   CFX_TPOArray tpos(100);
   if (!EndBreak_SplitLine(pNextLine, bAllChars, dwStatus)) {
-    EndBreak_BidiLine(tpos, dwStatus);
+    EndBreak_BidiLine(&tpos, dwStatus);
 
     if (!m_bPagination && m_iAlignment != CFX_RTFLineAlignment::Left)
       EndBreak_Alignment(tpos, bAllChars, dwStatus);
@@ -459,6 +456,7 @@ CFX_RTFBreakType CFX_RTFBreak::EndBreak(CFX_RTFBreakType dwStatus) {
 
   m_pCurLine = pNextLine;
   m_pCurLine->m_iStart = m_iBoundaryStart;
+
   CFX_RTFChar* pTC = GetLastChar(0);
   m_eCharType = pTC ? pTC->GetCharType() : FX_CHARTYPE_Unknown;
   return dwStatus;
@@ -469,7 +467,7 @@ bool CFX_RTFBreak::EndBreak_SplitLine(CFX_RTFLine* pNextLine,
                                       CFX_RTFBreakType dwStatus) {
   bool bDone = false;
   if (m_pCurLine->GetLineEnd() > m_iBoundaryEnd + m_iTolerance) {
-    CFX_RTFChar& tc = m_pCurLine->GetChar(m_pCurLine->CountChars() - 1);
+    const CFX_RTFChar& tc = m_pCurLine->GetChar(m_pCurLine->CountChars() - 1);
     switch (tc.GetCharType()) {
       case FX_CHARTYPE_Tab:
       case FX_CHARTYPE_Control:
@@ -481,76 +479,79 @@ bool CFX_RTFBreak::EndBreak_SplitLine(CFX_RTFLine* pNextLine,
         break;
     }
   }
-  if (m_bPagination || m_pCurLine->m_iMBCSChars > 0) {
-    const CFX_RTFChar* pCurChars = m_pCurLine->m_LineChars.data();
-    const CFX_RTFChar* pTC;
-    CFX_RTFPieceArray* pCurPieces = &m_pCurLine->m_LinePieces;
-    CFX_RTFPiece tp;
-    tp.m_pChars = &m_pCurLine->m_LineChars;
-    bool bNew = true;
-    uint32_t dwIdentity = (uint32_t)-1;
-    int32_t iLast = m_pCurLine->CountChars() - 1, j = 0;
-    for (int32_t i = 0; i <= iLast;) {
-      pTC = pCurChars + i;
-      if (bNew) {
-        tp.m_iStartChar = i;
-        tp.m_iStartPos += tp.m_iWidth;
-        tp.m_iWidth = 0;
+
+  if (!m_bPagination && m_pCurLine->m_iMBCSChars <= 0) {
+    if (bAllChars && !bDone) {
+      int32_t endPos = m_pCurLine->GetLineEnd();
+      GetBreakPos(m_pCurLine->m_LineChars, endPos, bAllChars, true);
+    }
+    return false;
+  }
+
+  const CFX_RTFChar* pCurChars = m_pCurLine->m_LineChars.data();
+  const CFX_RTFChar* pTC;
+  CFX_RTFPieceArray* pCurPieces = &m_pCurLine->m_LinePieces;
+  CFX_RTFPiece 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;) {
+    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_iFontHeight = pTC->m_iFontHeight;
+      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_RTFBreakType::None ||
+        pTC->m_dwIdentity != dwIdentity) {
+      tp.m_iChars = i - j;
+      if (pTC->m_dwIdentity == dwIdentity) {
         tp.m_dwStatus = pTC->m_dwStatus;
-        tp.m_iFontSize = pTC->m_iFontSize;
-        tp.m_iFontHeight = pTC->m_iFontHeight;
-        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_RTFBreakType::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++;
-        }
-        pCurPieces->Add(tp);
-        bNew = true;
-      } else {
         tp.m_iWidth += pTC->m_iCharWidth;
+        tp.m_iChars += 1;
         i++;
       }
+      pCurPieces->Add(tp);
+      bNew = true;
+    } else {
+      tp.m_iWidth += pTC->m_iCharWidth;
+      i++;
     }
-    return true;
-  }
-  if (bAllChars && !bDone) {
-    int32_t iEndPos = m_pCurLine->GetLineEnd();
-    GetBreakPos(m_pCurLine->m_LineChars, iEndPos, bAllChars, true);
   }
-  return false;
+  return true;
 }
-void CFX_RTFBreak::EndBreak_BidiLine(CFX_TPOArray& tpos,
+
+void CFX_RTFBreak::EndBreak_BidiLine(CFX_TPOArray* tpos,
                                      CFX_RTFBreakType dwStatus) {
   FX_TPO tpo;
   CFX_RTFPiece tp;
   CFX_RTFChar* pTC;
-  int32_t i, j;
+  int32_t i;
+  int32_t j;
   std::vector<CFX_RTFChar>& chars = m_pCurLine->m_LineChars;
   int32_t iCount = m_pCurLine->CountChars();
-  bool bDone = (!m_bPagination && m_pCurLine->m_iArabicChars > 0);
-  if (bDone) {
+  if (!m_bPagination && m_pCurLine->m_iArabicChars > 0) {
     int32_t iBidiNum = 0;
     for (i = 0; i < iCount; i++) {
       pTC = &chars[i];
       pTC->m_iBidiPos = i;
-      if (pTC->GetCharType() != FX_CHARTYPE_Control) {
+      if (pTC->GetCharType() != FX_CHARTYPE_Control)
         iBidiNum = i;
-      }
-      if (i == 0) {
+      if (i == 0)
         pTC->m_iBidiLevel = 1;
-      }
     }
     FX_BidiLine(chars, iBidiNum + 1, 0);
   } else {
@@ -561,23 +562,22 @@ void CFX_RTFBreak::EndBreak_BidiLine(CFX_TPOArray& tpos,
       pTC->m_iBidiOrder = 0;
     }
   }
+
   tp.m_dwStatus = CFX_RTFBreakType::Piece;
   tp.m_iStartPos = m_pCurLine->m_iStart;
   tp.m_pChars = &chars;
   CFX_RTFPieceArray* pCurPieces = &m_pCurLine->m_LinePieces;
-  int32_t iBidiLevel = -1, iCharWidth;
-  uint32_t dwIdentity = (uint32_t)-1;
-  i = j = 0;
+  int32_t iBidiLevel = -1;
+  int32_t iCharWidth;
+  uint32_t dwIdentity = static_cast<uint32_t>(-1);
+  i = 0;
+  j = 0;
   while (i < iCount) {
     pTC = &chars[i];
     if (iBidiLevel < 0) {
       iBidiLevel = pTC->m_iBidiLevel;
       iCharWidth = pTC->m_iCharWidth;
-      if (iCharWidth < 1) {
-        tp.m_iWidth = 0;
-      } else {
-        tp.m_iWidth = iCharWidth;
-      }
+      tp.m_iWidth = iCharWidth < 1 ? 0 : iCharWidth;
       tp.m_iBidiLevel = iBidiLevel;
       tp.m_iBidiPos = pTC->m_iBidiOrder;
       tp.m_iFontSize = pTC->m_iFontSize;
@@ -597,82 +597,83 @@ void CFX_RTFBreak::EndBreak_BidiLine(CFX_TPOArray& tpos,
       tp.m_iStartChar = i;
       tpo.index = j++;
       tpo.pos = tp.m_iBidiPos;
-      tpos.Add(tpo);
+      tpos->Add(tpo);
       iBidiLevel = -1;
     } else {
       iCharWidth = pTC->m_iCharWidth;
-      if (iCharWidth > 0) {
+      if (iCharWidth > 0)
         tp.m_iWidth += iCharWidth;
-      }
       i++;
     }
   }
+
   if (i > tp.m_iStartChar) {
     tp.m_dwStatus = dwStatus;
     tp.m_iChars = i - tp.m_iStartChar;
     pCurPieces->Add(tp);
     tpo.index = j;
     tpo.pos = tp.m_iBidiPos;
-    tpos.Add(tpo);
+    tpos->Add(tpo);
   }
 
-  j = tpos.GetSize() - 1;
-  FX_TEXTLAYOUT_PieceSort(tpos, 0, j);
+  j = tpos->GetSize() - 1;
+  FX_TEXTLAYOUT_PieceSort(*tpos, 0, j);
   int32_t iStartPos = m_pCurLine->m_iStart;
   for (i = 0; i <= j; i++) {
-    tpo = tpos.GetAt(i);
+    tpo = tpos->GetAt(i);
     CFX_RTFPiece& ttp = pCurPieces->GetAt(tpo.index);
     ttp.m_iStartPos = iStartPos;
     iStartPos += ttp.m_iWidth;
   }
 }
 
-void CFX_RTFBreak::EndBreak_Alignment(CFX_TPOArray& tpos,
+void CFX_RTFBreak::EndBreak_Alignment(const CFX_TPOArray& tpos,
                                       bool bAllChars,
                                       CFX_RTFBreakType dwStatus) {
   CFX_RTFPieceArray* pCurPieces = &m_pCurLine->m_LinePieces;
-  int32_t iNetWidth = m_pCurLine->m_iWidth, iGapChars = 0, iCharWidth;
+  int32_t iNetWidth = m_pCurLine->m_iWidth;
+  int32_t iGapChars = 0;
+  int32_t iCharWidth;
   int32_t iCount = pCurPieces->GetSize();
   bool bFind = false;
   uint32_t dwCharType;
-  int32_t i, j;
+  int32_t i;
+  int32_t j;
   FX_TPO tpo;
   for (i = iCount - 1; i > -1; i--) {
     tpo = tpos.GetAt(i);
     CFX_RTFPiece& ttp = pCurPieces->GetAt(tpo.index);
-    if (!bFind) {
+    if (!bFind)
       iNetWidth = ttp.GetEndPos();
-    }
+
     bool bArabic = FX_IsOdd(ttp.m_iBidiLevel);
     j = bArabic ? 0 : ttp.m_iChars - 1;
     while (j > -1 && j < ttp.m_iChars) {
       const CFX_RTFChar& tc = ttp.GetChar(j);
-      if (tc.m_nBreakType == FX_LBT_DIRECT_BRK) {
+      if (tc.m_nBreakType == FX_LBT_DIRECT_BRK)
         iGapChars++;
-      }
+
       if (!bFind || !bAllChars) {
         dwCharType = tc.GetCharType();
         if (dwCharType == FX_CHARTYPE_Space ||
             dwCharType == FX_CHARTYPE_Control) {
           if (!bFind) {
             iCharWidth = tc.m_iCharWidth;
-            if (bAllChars && iCharWidth > 0) {
+            if (bAllChars && iCharWidth > 0)
               iNetWidth -= iCharWidth;
-            }
           }
         } else {
           bFind = true;
-          if (!bAllChars) {
+          if (!bAllChars)
             break;
-          }
         }
       }
       j += bArabic ? 1 : -1;
     }
-    if (!bAllChars && bFind) {
+    if (!bAllChars && bFind)
       break;
-    }
   }
+
   int32_t iOffset = m_iBoundaryEnd - iNetWidth;
   if (iGapChars > 0 && (m_iAlignment == CFX_RTFLineAlignment::Distributed ||
                         (m_iAlignment == CFX_RTFLineAlignment::Justified &&
@@ -681,25 +682,23 @@ void CFX_RTFBreak::EndBreak_Alignment(CFX_TPOArray& tpos,
     for (i = 0; i < iCount; i++) {
       tpo = tpos.GetAt(i);
       CFX_RTFPiece& ttp = pCurPieces->GetAt(tpo.index);
-      if (iStart < 0) {
+      if (iStart < 0)
         iStart = ttp.m_iStartPos;
-      } else {
+      else
         ttp.m_iStartPos = iStart;
-      }
-      int32_t k;
+
       for (j = 0; j < ttp.m_iChars; j++) {
         CFX_RTFChar& tc = ttp.GetChar(j);
-        if (tc.m_nBreakType != FX_LBT_DIRECT_BRK || tc.m_iCharWidth < 0) {
+        if (tc.m_nBreakType != FX_LBT_DIRECT_BRK || tc.m_iCharWidth < 0)
           continue;
-        }
-        k = iOffset / iGapChars;
+
+        int32_t k = iOffset / iGapChars;
         tc.m_iCharWidth += k;
         ttp.m_iWidth += k;
         iOffset -= k;
         iGapChars--;
-        if (iGapChars < 1) {
+        if (iGapChars < 1)
           break;
-        }
       }
       iStart += ttp.m_iWidth;
     }
@@ -739,7 +738,8 @@ int32_t CFX_RTFBreak::GetBreakPos(std::vector<CFX_RTFChar>& tca,
   }
 
   CFX_RTFChar* pCharArray = tca.data();
-  CFX_RTFChar* pCur = pCharArray + iLength--;
+  CFX_RTFChar* pCur = pCharArray + iLength;
+  iLength--;
   if (bAllChars)
     pCur->m_nBreakType = FX_LBT_UNKNOWN;
 
@@ -755,15 +755,14 @@ int32_t CFX_RTFBreak::GetBreakPos(std::vector<CFX_RTFChar>& tca,
     uint32_t nCur = nCodeProp & 0x003F;
     bool bNeedBreak = false;
     FX_LINEBREAKTYPE eType;
-    if (nCur == FX_CBP_SP) {
-      bNeedBreak = true;
-      eType = nNext == FX_CBP_SP ? FX_LBT_PROHIBITED_BRK
-                                 : gs_FX_LineBreak_PairTable[nCur][nNext];
-    } else if (nCur == FX_CBP_TB) {
+    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];
     }
@@ -816,15 +815,15 @@ void CFX_RTFBreak::SplitTextLine(CFX_RTFLine* pCurLine,
                                  bool bAllChars) {
   ASSERT(pCurLine && pNextLine);
   int32_t iCount = pCurLine->CountChars();
-  if (iCount < 2) {
+  if (iCount < 2)
     return;
-  }
+
   int32_t iEndPos = pCurLine->GetLineEnd();
   std::vector<CFX_RTFChar>& curChars = pCurLine->m_LineChars;
   int32_t iCharPos = GetBreakPos(curChars, iEndPos, bAllChars, false);
-  if (iCharPos < 0) {
+  if (iCharPos < 0)
     iCharPos = 0;
-  }
+
   iCharPos++;
   if (iCharPos >= iCount) {
     pNextLine->RemoveAll(true);
@@ -832,94 +831,93 @@ void CFX_RTFBreak::SplitTextLine(CFX_RTFLine* pCurLine,
     pTC->m_nBreakType = FX_LBT_UNKNOWN;
     return;
   }
-  std::vector<CFX_RTFChar>& nextChars = pNextLine->m_LineChars;
-  nextChars =
+
+  pNextLine->m_LineChars =
       std::vector<CFX_RTFChar>(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;
-  iCount = pdfium::CollectionSize<int>(nextChars);
-  CFX_RTFChar* pNextChars = nextChars.data();
-  for (int32_t i = 0; i < iCount; i++) {
-    CFX_RTFChar* tc = pNextChars + i;
-    if (tc->GetCharType() >= FX_CHARTYPE_ArabicAlef) {
+
+  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++;
     }
-    tc->m_dwStatus = CFX_RTFBreakType::None;
+    pNextLine->m_LineChars[i].m_dwStatus = CFX_RTFBreakType::None;
   }
 }
 
 int32_t CFX_RTFBreak::CountBreakPieces() const {
-  CFX_RTFPieceArray* pRTFPieces = GetRTFPieces();
+  const CFX_RTFPieceArray* pRTFPieces = GetRTFPieces();
   return pRTFPieces ? pRTFPieces->GetSize() : 0;
 }
 
 const CFX_RTFPiece* CFX_RTFBreak::GetBreakPiece(int32_t index) const {
-  CFX_RTFPieceArray* pRTFPieces = GetRTFPieces();
+  const CFX_RTFPieceArray* pRTFPieces = GetRTFPieces();
   if (!pRTFPieces)
     return nullptr;
-
   if (index < 0 || index >= pRTFPieces->GetSize())
     return nullptr;
-
   return pRTFPieces->GetPtrAt(index);
 }
 
 void CFX_RTFBreak::GetLineRect(CFX_RectF& rect) const {
   rect.top = 0;
-  CFX_RTFLine* pRTFLine = GetRTFLine();
+  const CFX_RTFLine* pRTFLine = GetRTFLine();
   if (!pRTFLine) {
     rect.left = ((FX_FLOAT)m_iBoundaryStart) / 20000.0f;
     rect.width = rect.height = 0;
     return;
   }
-  rect.left = ((FX_FLOAT)pRTFLine->m_iStart) / 20000.0f;
-  rect.width = ((FX_FLOAT)pRTFLine->m_iWidth) / 20000.0f;
-  CFX_RTFPieceArray& rtfPieces = pRTFLine->m_LinePieces;
+
+  rect.left = static_cast<FX_FLOAT>(pRTFLine->m_iStart) / 20000.0f;
+  rect.width = static_cast<FX_FLOAT>(pRTFLine->m_iWidth) / 20000.0f;
+  const CFX_RTFPieceArray& rtfPieces = pRTFLine->m_LinePieces;
   int32_t iCount = rtfPieces.GetSize();
   if (iCount < 1) {
     rect.width = 0;
     return;
   }
+
   CFX_RTFPiece* pBreakPiece;
-  int32_t iLineHeight = 0, iMax;
+  int32_t iLineHeight = 0;
+  int32_t iMax;
   for (int32_t i = 0; i < iCount; i++) {
     pBreakPiece = rtfPieces.GetPtrAt(i);
     int32_t iFontHeight = FXSYS_round(pBreakPiece->m_iFontHeight *
                                       pBreakPiece->m_iVerticalScale / 100.0f);
     iMax = std::max(pBreakPiece->m_iFontSize, iFontHeight);
-    if (i == 0) {
-      iLineHeight = iMax;
-    } else if (iLineHeight < iMax) {
+    if (i == 0 || iLineHeight < iMax)
       iLineHeight = iMax;
-    }
   }
-  rect.height = ((FX_FLOAT)iLineHeight) / 20.0f;
+  rect.height = static_cast<FX_FLOAT>(iLineHeight) / 20.0f;
 }
+
 void CFX_RTFBreak::ClearBreakPieces() {
-  CFX_RTFLine* pRTFLine = GetRTFLine();
-  if (pRTFLine) {
-    pRTFLine->RemoveAll(true);
-  }
+  const CFX_RTFLine* pRTFLine = GetRTFLine();
+  if (pRTFLine)
+    const_cast<CFX_RTFLine*>(pRTFLine)->RemoveAll(true);
   m_iReady = 0;
 }
+
 void CFX_RTFBreak::Reset() {
   m_eCharType = FX_CHARTYPE_Unknown;
   m_RTFLine1.RemoveAll(true);
   m_RTFLine2.RemoveAll(true);
 }
+
 int32_t CFX_RTFBreak::GetDisplayPos(const FX_RTFTEXTOBJ* pText,
                                     FXTEXT_CHARPOS* pCharPos,
                                     bool bCharCode,
                                     CFX_WideString* pWSForms,
                                     FX_AdjustCharDisplayPos pAdjustPos) const {
-  if (!pText || pText->iLength < 1) {
+  if (!pText || pText->iLength < 1)
     return 0;
-  }
+
   ASSERT(pText->pStr && pText->pWidths && pText->pFont && pText->pRect);
+
   const FX_WCHAR* pStr = pText->pStr;
   int32_t* pWidths = pText->pWidths;
   int32_t iLength = pText->iLength - 1;
@@ -932,16 +930,25 @@ int32_t CFX_RTFBreak::GetDisplayPos(const FX_RTFTEXTOBJ* pText,
   int32_t iDescent = pFont->GetDescent();
   int32_t iMaxHeight = iAscent - iDescent;
   FX_FLOAT fFontHeight = fFontSize;
-  FX_FLOAT fAscent = fFontHeight * (FX_FLOAT)iAscent / (FX_FLOAT)iMaxHeight;
-  FX_WCHAR wch, wPrev = 0xFEFF, wNext, wForm;
-  int32_t iWidth, iCharWidth, iCharHeight;
-  FX_FLOAT fX, fY, fCharWidth, fCharHeight;
+  FX_FLOAT fAscent = fFontHeight * static_cast<FX_FLOAT>(iAscent) /
+                     static_cast<FX_FLOAT>(iMaxHeight);
+  FX_WCHAR wch;
+  FX_WCHAR wPrev = 0xFEFF;
+  FX_WCHAR wNext;
+  FX_WCHAR wForm;
+  int32_t iWidth;
+  int32_t iCharWidth;
+  int32_t iCharHeight;
+  FX_FLOAT fX = rtText.left;
+  FX_FLOAT fY = rtText.top;
+  FX_FLOAT fCharWidth;
+  FX_FLOAT fCharHeight;
   int32_t iHorScale = pText->iHorizontalScale;
   int32_t iVerScale = pText->iVerticalScale;
   bool bEmptyChar;
-  uint32_t dwProps, dwCharType;
-  fX = rtText.left;
-  fY = rtText.top;
+  uint32_t dwProps;
+  uint32_t dwCharType;
+
   if (bRTLPiece)
     fX = rtText.right();
 
@@ -956,98 +963,90 @@ int32_t CFX_RTFBreak::GetDisplayPos(const FX_RTFTEXTOBJ* pText,
       wPrev = 0xFEFF;
       continue;
     }
-    if (iWidth != 0) {
-      iCharWidth = iWidth;
-      if (iCharWidth < 0)
-        iCharWidth = -iCharWidth;
-
-      bEmptyChar =
-          (dwCharType >= FX_CHARTYPE_Tab && dwCharType <= FX_CHARTYPE_Control);
-      if (!bEmptyChar)
-        iCount++;
-
-      if (pCharPos) {
-        iCharWidth /= iFontSize;
-        wForm = wch;
-        if (dwCharType >= FX_CHARTYPE_ArabicAlef) {
-          if (i < iLength) {
-            wNext = *pStr;
-            if (*pWidths < 0) {
-              if (i + 1 < iLength) {
-                wNext = pStr[1];
-              }
-            }
-          } else {
-            wNext = 0xFEFF;
-          }
-          wForm = pdfium::arabic::GetFormChar(wch, wPrev, wNext);
-        } else if (bRTLPiece) {
-          wForm = FX_GetMirrorChar(wch, dwProps, bRTLPiece, false);
+    if (iWidth == 0)
+      continue;
+
+    iCharWidth = FXSYS_abs(iWidth);
+    bEmptyChar =
+        (dwCharType >= FX_CHARTYPE_Tab && dwCharType <= FX_CHARTYPE_Control);
+    if (!bEmptyChar)
+      iCount++;
+
+    if (pCharPos) {
+      iCharWidth /= iFontSize;
+      wForm = wch;
+      if (dwCharType >= FX_CHARTYPE_ArabicAlef) {
+        if (i < iLength) {
+          wNext = *pStr;
+          if (*pWidths < 0 && i + 1 < iLength)
+            wNext = pStr[1];
+        } 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);
         }
-        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;
+        pCharPos->m_ExtGID = pCharPos->m_GlyphIndex;
 #endif
-          pCharPos->m_FontCharWidth = iCharWidth;
-          if (pWSForms) {
-            *pWSForms += wForm;
-          }
-        }
-        iCharHeight = 1000;
-
-        fCharWidth = fFontSize * iCharWidth / 1000.0f;
-        fCharHeight = fFontSize * iCharHeight / 1000.0f;
-        if (bRTLPiece && dwCharType != FX_CHARTYPE_Combination)
-          fX -= fCharWidth;
-
-        if (!bEmptyChar) {
-          CFX_PointF ptOffset;
-          bool bAdjusted = false;
-          if (pAdjustPos) {
-            bAdjusted =
-                pAdjustPos(wForm, false, pFont, fFontSize, false, ptOffset);
-          }
-          pCharPos->m_Origin = CFX_PointF(fX + ptOffset.x, fY - ptOffset.y);
+        pCharPos->m_FontCharWidth = iCharWidth;
+        if (pWSForms)
+          *pWSForms += wForm;
+      }
+      iCharHeight = 1000;
+
+      fCharWidth = fFontSize * iCharWidth / 1000.0f;
+      fCharHeight = fFontSize * iCharHeight / 1000.0f;
+      if (bRTLPiece && dwCharType != FX_CHARTYPE_Combination)
+        fX -= fCharWidth;
+
+      if (!bEmptyChar) {
+        CFX_PointF ptOffset;
+        bool bAdjusted = false;
+        if (pAdjustPos) {
+          bAdjusted =
+              pAdjustPos(wForm, false, pFont, fFontSize, false, ptOffset);
         }
-        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++;
+        pCharPos->m_Origin = CFX_PointF(fX + ptOffset.x, fY - ptOffset.y);
+      }
+      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) {
+    if (iWidth > 0)
       wPrev = wch;
-    }
   }
   return iCount;
 }
diff --git a/xfa/fgas/layout/fgas_rtfbreak.h b/xfa/fgas/layout/fgas_rtfbreak.h
index 2389442c0d..d99a56bfa1 100644
--- a/xfa/fgas/layout/fgas_rtfbreak.h
+++ b/xfa/fgas/layout/fgas_rtfbreak.h
@@ -53,11 +53,10 @@ class CFX_RTFPiece {
   void AppendChar(const CFX_RTFChar& tc) {
     ASSERT(m_pChars);
     m_pChars->push_back(tc);
-    if (m_iWidth < 0) {
+    if (m_iWidth < 0)
       m_iWidth = tc.m_iCharWidth;
-    } else {
+    else
       m_iWidth += tc.m_iCharWidth;
-    }
     m_iChars++;
   }
 
@@ -100,9 +99,9 @@ class CFX_RTFPiece {
 
   void Reset() {
     m_dwStatus = CFX_RTFBreakType::Piece;
-    if (m_iWidth > -1) {
+    if (m_iWidth > -1)
       m_iStartPos += m_iWidth;
-    }
+
     m_iWidth = -1;
     m_iStartChar += m_iChars;
     m_iChars = 0;
@@ -138,23 +137,28 @@ class CFX_RTFLine {
   int32_t CountChars() const {
     return pdfium::CollectionSize<int32_t>(m_LineChars);
   }
+
   CFX_RTFChar& GetChar(int32_t index) {
     ASSERT(index >= 0 && index < pdfium::CollectionSize<int32_t>(m_LineChars));
     return m_LineChars[index];
   }
+
   CFX_RTFChar* GetCharPtr(int32_t index) {
     ASSERT(index > -1 && index < pdfium::CollectionSize<int32_t>(m_LineChars));
     return &m_LineChars[index];
   }
+
   int32_t CountPieces() const { return m_LinePieces.GetSize(); }
   CFX_RTFPiece& GetPiece(int32_t index) const {
     ASSERT(index > -1 && index < m_LinePieces.GetSize());
     return m_LinePieces.GetAt(index);
   }
+
   CFX_RTFPiece* GetPiecePtr(int32_t index) const {
     ASSERT(index > -1 && index < m_LinePieces.GetSize());
     return m_LinePieces.GetPtrAt(index);
   }
+
   int32_t GetLineEnd() const { return m_iStart + m_iWidth; }
   void RemoveAll(bool bLeaveMemory = false) {
     m_LineChars.clear();
@@ -208,13 +212,14 @@ class CFX_RTFBreak {
   CFX_RTFBreakType AppendChar_Others(CFX_RTFChar* pCurChar);
 
  protected:
+  void FontChanged();
   void SetBreakStatus();
   CFX_RTFChar* GetLastChar(int32_t index) const;
-  CFX_RTFLine* GetRTFLine() const;
-  CFX_RTFPieceArray* GetRTFPieces() const;
+  const CFX_RTFLine* GetRTFLine() const;
+  const CFX_RTFPieceArray* GetRTFPieces() const;
   FX_CHARTYPE GetUnifiedCharType(FX_CHARTYPE chartype) const;
   int32_t GetLastPositionedTab() const;
-  bool GetPositionedTab(int32_t& iTabPos) const;
+  bool GetPositionedTab(int32_t* iTabPos) const;
 
   int32_t GetBreakPos(std::vector<CFX_RTFChar>& tca,
                       int32_t& iEndPos,
@@ -226,8 +231,8 @@ class CFX_RTFBreak {
   bool EndBreak_SplitLine(CFX_RTFLine* pNextLine,
                           bool bAllChars,
                           CFX_RTFBreakType dwStatus);
-  void EndBreak_BidiLine(CFX_TPOArray& tpos, CFX_RTFBreakType dwStatus);
-  void EndBreak_Alignment(CFX_TPOArray& tpos,
+  void EndBreak_BidiLine(CFX_TPOArray* tpos, CFX_RTFBreakType dwStatus);
+  void EndBreak_Alignment(const CFX_TPOArray& tpos,
                           bool bAllChars,
                           CFX_RTFBreakType dwStatus);
 
diff --git a/xfa/fgas/layout/fgas_textbreak.cpp b/xfa/fgas/layout/fgas_textbreak.cpp
index 1ab90b23d3..69baa14c6c 100644
--- a/xfa/fgas/layout/fgas_textbreak.cpp
+++ b/xfa/fgas/layout/fgas_textbreak.cpp
@@ -86,13 +86,8 @@ void CFX_TxtBreak::SetLineWidth(FX_FLOAT fLineWidth) {
 }
 
 void CFX_TxtBreak::SetLinePos(FX_FLOAT fLinePos) {
-  int32_t iLinePos = FXSYS_round(fLinePos * 20000.0f);
-  if (iLinePos < 0) {
-    iLinePos = 0;
-  }
-  if (iLinePos > m_iLineWidth) {
-    iLinePos = m_iLineWidth;
-  }
+  int32_t iLinePos =
+      std::min(std::max(FXSYS_round(fLinePos * 20000.0f), 0), m_iLineWidth);
   m_pCurLine->m_iStart = iLinePos;
   m_pCurLine->m_iWidth += iLinePos;
 }
@@ -117,52 +112,52 @@ void CFX_TxtBreak::SetFont(const CFX_RetainPtr<CFGAS_GEFont>& pFont) {
 
   SetBreakStatus();
   m_pFont = pFont;
-  m_iDefChar = 0;
-  if (m_wDefChar != 0xFEFF && m_pFont) {
-    m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
-    m_iDefChar *= m_iFontSize;
-  }
+  FontChanged();
 }
 
 void CFX_TxtBreak::SetFontSize(FX_FLOAT fFontSize) {
   int32_t iFontSize = FXSYS_round(fFontSize * 20.0f);
-  if (m_iFontSize == iFontSize) {
+  if (m_iFontSize == iFontSize)
     return;
-  }
+
   SetBreakStatus();
   m_iFontSize = iFontSize;
+  FontChanged();
+}
+
+void CFX_TxtBreak::FontChanged() {
   m_iDefChar = 0;
-  if (m_wDefChar != 0xFEFF && m_pFont) {
-    m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
-    m_iDefChar *= m_iFontSize;
-  }
+  if (m_wDefChar == 0xFEFF || !m_pFont)
+    return;
+
+  m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
+  m_iDefChar *= m_iFontSize;
 }
 
 void CFX_TxtBreak::SetTabWidth(FX_FLOAT fTabWidth, bool bEquidistant) {
   m_iTabWidth = FXSYS_round(fTabWidth * 20000.0f);
-  if (m_iTabWidth < FX_TXTBREAK_MinimumTabWidth) {
+  if (m_iTabWidth < FX_TXTBREAK_MinimumTabWidth)
     m_iTabWidth = FX_TXTBREAK_MinimumTabWidth;
-  }
+
   m_bEquidistant = bEquidistant;
 }
 
 void CFX_TxtBreak::SetDefaultChar(FX_WCHAR wch) {
   m_wDefChar = wch;
   m_iDefChar = 0;
-  if (m_wDefChar != 0xFEFF && m_pFont) {
-    m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
-    if (m_iDefChar < 0) {
-      m_iDefChar = 0;
-    } else {
-      m_iDefChar *= m_iFontSize;
-    }
-  }
+  if (m_wDefChar == 0xFEFF || !m_pFont)
+    return;
+
+  m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
+  if (m_iDefChar < 0)
+    m_iDefChar = 0;
+  else
+    m_iDefChar *= m_iFontSize;
 }
 
 void CFX_TxtBreak::SetParagraphBreakChar(FX_WCHAR wch) {
-  if (wch != L'\r' && wch != L'\n') {
+  if (wch != L'\r' && wch != L'\n')
     return;
-  }
   m_wParagBreakChar = wch;
 }
 
@@ -171,14 +166,14 @@ void CFX_TxtBreak::SetLineBreakTolerance(FX_FLOAT fTolerance) {
 }
 
 void CFX_TxtBreak::SetCharRotation(int32_t iCharRotation) {
-  if (iCharRotation < 0) {
+  if (iCharRotation < 0)
     iCharRotation += (-iCharRotation / 4 + 1) * 4;
-  } else if (iCharRotation > 3) {
+  else if (iCharRotation > 3)
     iCharRotation -= (iCharRotation / 4) * 4;
-  }
-  if (m_iCharRotation == iCharRotation) {
+
+  if (m_iCharRotation == iCharRotation)
     return;
-  }
+
   SetBreakStatus();
   m_iCharRotation = iCharRotation;
   m_iRotation = m_iLineRotation + m_iCharRotation;
@@ -194,15 +189,12 @@ void CFX_TxtBreak::SetAlignment(int32_t iAlignment) {
 
 void CFX_TxtBreak::ResetContextCharStyles() {
   m_dwContextCharStyles = m_bArabicContext ? m_iCurAlignment : m_iAlignment;
-  if (m_bArabicNumber) {
+  if (m_bArabicNumber)
     m_dwContextCharStyles |= FX_TXTCHARSTYLE_ArabicNumber;
-  }
-  if (m_bArabicComma) {
+  if (m_bArabicComma)
     m_dwContextCharStyles |= FX_TXTCHARSTYLE_ArabicComma;
-  }
-  if ((m_bArabicContext && m_bCurRTL) || (!m_bArabicContext && m_bRTL)) {
+  if ((m_bArabicContext && m_bCurRTL) || (!m_bArabicContext && m_bRTL))
     m_dwContextCharStyles |= FX_TXTCHARSTYLE_RTLReadingOrder;
-  }
   m_dwContextCharStyles |= (m_iArabicContext << 8);
 }
 
@@ -211,34 +203,32 @@ void CFX_TxtBreak::SetCombWidth(FX_FLOAT fCombWidth) {
 }
 
 void CFX_TxtBreak::SetUserData(void* pUserData) {
-  if (m_pUserData == pUserData) {
+  if (m_pUserData == pUserData)
     return;
-  }
+
   SetBreakStatus();
   m_pUserData = pUserData;
 }
 
 void CFX_TxtBreak::SetBreakStatus() {
-  if (m_bPagination) {
+  if (m_bPagination)
     return;
-  }
+
   int32_t iCount = m_pCurLine->CountChars();
-  if (iCount < 1) {
+  if (iCount < 1)
     return;
-  }
+
   CFX_TxtChar* pTC = m_pCurLine->GetCharPtr(iCount - 1);
-  if (pTC->m_dwStatus == 0) {
+  if (pTC->m_dwStatus == 0)
     pTC->m_dwStatus = FX_TXTBREAK_PieceBreak;
-  }
 }
 
 void CFX_TxtBreak::SetHorizontalScale(int32_t iScale) {
-  if (iScale < 0) {
+  if (iScale < 0)
     iScale = 0;
-  }
-  if (iScale == m_iHorScale) {
+  if (iScale == m_iHorScale)
     return;
-  }
+
   SetBreakStatus();
   m_iHorScale = iScale;
 }
@@ -248,6 +238,7 @@ void CFX_TxtBreak::SetCharSpace(FX_FLOAT fCharSpace) {
 }
 
 static const int32_t gs_FX_TxtLineRotations[8] = {0, 3, 1, 0, 2, 1, 3, 2};
+
 int32_t CFX_TxtBreak::GetLineRotation(uint32_t dwStyles) const {
   return gs_FX_TxtLineRotations[(dwStyles & 0x0E) >> 1];
 }
@@ -255,18 +246,16 @@ int32_t CFX_TxtBreak::GetLineRotation(uint32_t dwStyles) const {
 CFX_TxtChar* CFX_TxtBreak::GetLastChar(int32_t index, bool bOmitChar) const {
   std::vector<CFX_TxtChar>& ca = *m_pCurLine->m_pLineChars.get();
   int32_t iCount = pdfium::CollectionSize<int32_t>(ca);
-  if (index < 0 || index >= iCount) {
+  if (index < 0 || index >= iCount)
     return nullptr;
-  }
+
   int32_t iStart = iCount - 1;
   while (iStart > -1) {
     CFX_TxtChar* pTC = &ca[iStart--];
-    if (bOmitChar && pTC->GetCharType() == FX_CHARTYPE_Combination) {
+    if (bOmitChar && pTC->GetCharType() == FX_CHARTYPE_Combination)
       continue;
-    }
-    if (--index < 0) {
+    if (--index < 0)
       return pTC;
-    }
   }
   return nullptr;
 }
@@ -281,10 +270,7 @@ CFX_TxtLine* CFX_TxtBreak::GetTxtLine() const {
 
 CFX_TxtPieceArray* CFX_TxtBreak::GetTxtPieces() const {
   CFX_TxtLine* pTxtLine = GetTxtLine();
-  if (!pTxtLine) {
-    return nullptr;
-  }
-  return pTxtLine->m_pLinePieces.get();
+  return pTxtLine ? pTxtLine->m_pLinePieces.get() : nullptr;
 }
 
 inline FX_CHARTYPE CFX_TxtBreak::GetUnifiedCharType(
@@ -307,11 +293,10 @@ void CFX_TxtBreak::ResetArabicContext() {
       m_bCurRTL = m_bRTL;
       m_iCurAlignment = m_iAlignment;
     }
-    if (m_bRTL) {
+    if (m_bRTL)
       m_bArabicNumber = m_iArabicContext >= 1;
-    } else {
+    else
       m_bArabicNumber = m_iArabicContext > 1;
-    }
     m_bArabicNumber = m_bArabicNumber && m_bArabicShapes;
   }
   m_bArabicComma = m_bArabicNumber;
@@ -333,15 +318,14 @@ void CFX_TxtBreak::AppendChar_PageLoad(CFX_TxtChar* pCurChar,
                                                                           : 1);
     if (iArabicContext != m_iArabicContext && iArabicContext != 1) {
       m_iArabicContext = iArabicContext;
-      if (m_iCurArabicContext == 1) {
+      if (m_iCurArabicContext == 1)
         m_iCurArabicContext = iArabicContext;
-      }
+
       ResetArabicContext();
       if (!m_bPagination) {
         CFX_TxtChar* pLastChar = GetLastChar(1, false);
-        if (pLastChar && pLastChar->m_dwStatus < 1) {
+        if (pLastChar && pLastChar->m_dwStatus < 1)
           pLastChar->m_dwStatus = FX_TXTBREAK_PieceBreak;
-        }
       }
     }
   }
@@ -385,9 +369,8 @@ uint32_t CFX_TxtBreak::AppendChar_Combination(CFX_TxtChar* pCurChar,
           }
         }
       }
-      if (!m_pFont->GetCharWidth(wForm, iCharWidth, false)) {
+      if (!m_pFont->GetCharWidth(wForm, iCharWidth, false))
         iCharWidth = 0;
-      }
     }
     iCharWidth *= m_iFontSize;
     iCharWidth = iCharWidth * m_iHorScale / 100;
@@ -399,9 +382,9 @@ uint32_t CFX_TxtBreak::AppendChar_Combination(CFX_TxtChar* pCurChar,
 uint32_t CFX_TxtBreak::AppendChar_Tab(CFX_TxtChar* pCurChar,
                                       int32_t iRotation) {
   m_eCharType = FX_CHARTYPE_Tab;
-  if ((m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_ExpandTab) == 0) {
+  if ((m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_ExpandTab) == 0)
     return FX_TXTBREAK_None;
-  }
+
   int32_t& iLineWidth = m_pCurLine->m_iWidth;
   int32_t iCharWidth;
   if (m_bCombText) {
@@ -410,18 +393,18 @@ uint32_t CFX_TxtBreak::AppendChar_Tab(CFX_TxtChar* pCurChar,
     if (m_bEquidistant) {
       iCharWidth = iLineWidth;
       iCharWidth = m_iTabWidth * (iCharWidth / m_iTabWidth + 1) - iCharWidth;
-      if (iCharWidth < FX_TXTBREAK_MinimumTabWidth) {
+      if (iCharWidth < FX_TXTBREAK_MinimumTabWidth)
         iCharWidth += m_iTabWidth;
-      }
     } else {
       iCharWidth = m_iTabWidth;
     }
   }
+
   pCurChar->m_iCharWidth = iCharWidth;
   iLineWidth += iCharWidth;
-  if (!m_bSingleLine && iLineWidth >= m_iLineWidth + m_iTolerance) {
+  if (!m_bSingleLine && iLineWidth >= m_iLineWidth + m_iTolerance)
     return EndBreak(FX_TXTBREAK_LineBreak);
-  }
+
   return FX_TXTBREAK_None;
 }
 
@@ -443,14 +426,12 @@ uint32_t CFX_TxtBreak::AppendChar_Control(CFX_TxtChar* pCurChar,
         dwRet = FX_TXTBREAK_ParagraphBreak;
         break;
       default:
-        if (wch == m_wParagBreakChar) {
+        if (wch == m_wParagBreakChar)
           dwRet = FX_TXTBREAK_ParagraphBreak;
-        }
         break;
     }
-    if (dwRet != FX_TXTBREAK_None) {
+    if (dwRet != FX_TXTBREAK_None)
       dwRet = EndBreak(dwRet);
-    }
   }
   return dwRet;
 }
@@ -468,25 +449,24 @@ uint32_t CFX_TxtBreak::AppendChar_Arabic(CFX_TxtChar* pCurChar,
     pLastChar = GetLastChar(1);
     if (pLastChar) {
       iCharWidth = pLastChar->m_iCharWidth;
-      if (iCharWidth > 0) {
+      if (iCharWidth > 0)
         iLineWidth -= iCharWidth;
-      }
+
       CFX_Char* pPrevChar = GetLastChar(2);
       wForm = pdfium::arabic::GetFormChar(pLastChar, pPrevChar, pCurChar);
       bAlef = (wForm == 0xFEFF &&
                pLastChar->GetCharType() == FX_CHARTYPE_ArabicAlef);
       int32_t iLastRotation = pLastChar->m_nRotation + m_iLineRotation;
-      if (m_bVertical && (pLastChar->m_dwCharProps & 0x8000) != 0) {
+      if (m_bVertical && (pLastChar->m_dwCharProps & 0x8000) != 0)
         iLastRotation++;
-      }
-      if (m_bVertical != FX_IsOdd(iLastRotation)) {
+      if (m_bVertical != FX_IsOdd(iLastRotation))
         iCharWidth = 1000;
-      } else {
+      else
         m_pFont->GetCharWidth(wForm, iCharWidth, false);
-      }
-      if (wForm == 0xFEFF) {
+
+      if (wForm == 0xFEFF)
         iCharWidth = m_iDefChar;
-      }
+
       iCharWidth *= m_iFontSize;
       iCharWidth = iCharWidth * m_iHorScale / 100;
       pLastChar->m_iCharWidth = iCharWidth;
@@ -494,29 +474,29 @@ uint32_t CFX_TxtBreak::AppendChar_Arabic(CFX_TxtChar* pCurChar,
       iCharWidth = 0;
     }
   }
+
   m_eCharType = chartype;
   wForm = pdfium::arabic::GetFormChar(pCurChar, bAlef ? nullptr : pLastChar,
                                       nullptr);
   if (m_bCombText) {
     iCharWidth = m_iCombWidth;
   } else {
-    if (m_bVertical != FX_IsOdd(iRotation)) {
+    if (m_bVertical != FX_IsOdd(iRotation))
       iCharWidth = 1000;
-    } else {
+    else
       m_pFont->GetCharWidth(wForm, iCharWidth, false);
-    }
-    if (wForm == 0xFEFF) {
+
+    if (wForm == 0xFEFF)
       iCharWidth = m_iDefChar;
-    }
+
     iCharWidth *= m_iFontSize;
     iCharWidth = iCharWidth * m_iHorScale / 100;
   }
   pCurChar->m_iCharWidth = iCharWidth;
   iLineWidth += iCharWidth;
   m_pCurLine->m_iArabicChars++;
-  if (!m_bSingleLine && iLineWidth > m_iLineWidth + m_iTolerance) {
+  if (!m_bSingleLine && iLineWidth > m_iLineWidth + m_iTolerance)
     return EndBreak(FX_TXTBREAK_LineBreak);
-  }
   return FX_TXTBREAK_None;
 }
 
@@ -542,34 +522,37 @@ uint32_t CFX_TxtBreak::AppendChar_Others(CFX_TxtChar* pCurChar,
   } else if (m_bCurRTL || m_bVertical) {
     wForm = FX_GetMirrorChar(wch, dwProps, m_bCurRTL, m_bVertical);
   }
+
   if (m_bCombText) {
     iCharWidth = m_iCombWidth;
   } else {
-    if (m_bVertical != FX_IsOdd(iRotation)) {
+    if (m_bVertical != FX_IsOdd(iRotation))
       iCharWidth = 1000;
-    } else if (!m_pFont->GetCharWidth(wForm, iCharWidth, false)) {
+    else if (!m_pFont->GetCharWidth(wForm, iCharWidth, false))
       iCharWidth = m_iDefChar;
-    }
+
     iCharWidth *= m_iFontSize;
     iCharWidth = iCharWidth * m_iHorScale / 100;
   }
+
   iCharWidth += m_iCharSpace;
   pCurChar->m_iCharWidth = iCharWidth;
   iLineWidth += iCharWidth;
   bool bBreak = (chartype != FX_CHARTYPE_Space ||
                  (m_dwPolicies & FX_TXTBREAKPOLICY_SpaceBreak) != 0);
-  if (!m_bSingleLine && bBreak && iLineWidth > m_iLineWidth + m_iTolerance) {
+  if (!m_bSingleLine && bBreak && iLineWidth > m_iLineWidth + m_iTolerance)
     return EndBreak(FX_TXTBREAK_LineBreak);
-  }
+
   return FX_TXTBREAK_None;
 }
 
 uint32_t CFX_TxtBreak::AppendChar(FX_WCHAR wch) {
-  uint32_t dwProps = kTextLayoutCodeProperties[(uint16_t)wch];
+  uint32_t dwProps = kTextLayoutCodeProperties[static_cast<uint16_t>(wch)];
   FX_CHARTYPE chartype = GetCharTypeFromProp(dwProps);
   m_pCurLine->m_pLineChars->emplace_back();
+
   CFX_TxtChar* pCurChar = &m_pCurLine->m_pLineChars->back();
-  pCurChar->m_wCharCode = (uint16_t)wch;
+  pCurChar->m_wCharCode = static_cast<uint16_t>(wch);
   pCurChar->m_nRotation = m_iCharRotation;
   pCurChar->m_dwCharProps = dwProps;
   pCurChar->m_dwCharStyles = 0;
@@ -585,22 +568,20 @@ uint32_t CFX_TxtBreak::AppendChar(FX_WCHAR wch) {
   AppendChar_PageLoad(pCurChar, dwProps);
   uint32_t dwRet1 = FX_TXTBREAK_None;
   if (chartype != FX_CHARTYPE_Combination &&
-      GetUnifiedCharType(m_eCharType) != GetUnifiedCharType(chartype)) {
-    if (m_eCharType != FX_CHARTYPE_Unknown &&
-        m_pCurLine->m_iWidth > m_iLineWidth + m_iTolerance && !m_bSingleLine) {
-      if (m_eCharType != FX_CHARTYPE_Space || chartype != FX_CHARTYPE_Control) {
-        dwRet1 = EndBreak(FX_TXTBREAK_LineBreak);
-        int32_t iCount = m_pCurLine->CountChars();
-        if (iCount > 0) {
-          pCurChar = &(*m_pCurLine->m_pLineChars)[iCount - 1];
-        }
-      }
-    }
+      GetUnifiedCharType(m_eCharType) != GetUnifiedCharType(chartype) &&
+      m_eCharType != FX_CHARTYPE_Unknown &&
+      m_pCurLine->m_iWidth > m_iLineWidth + m_iTolerance && !m_bSingleLine &&
+      (m_eCharType != FX_CHARTYPE_Space || chartype != FX_CHARTYPE_Control)) {
+    dwRet1 = EndBreak(FX_TXTBREAK_LineBreak);
+    int32_t iCount = m_pCurLine->CountChars();
+    if (iCount > 0)
+      pCurChar = &(*m_pCurLine->m_pLineChars)[iCount - 1];
   }
+
   int32_t iRotation = m_iRotation;
-  if (m_bVertical && (dwProps & 0x8000) != 0) {
+  if (m_bVertical && (dwProps & 0x8000) != 0)
     iRotation = (iRotation + 1) % 4;
-  }
+
   uint32_t dwRet2 =
       (this->*g_FX_TxtBreak_lpfAppendChar[chartype >> FX_CHARTYPEBITS])(
           pCurChar, iRotation);
@@ -610,9 +591,9 @@ uint32_t CFX_TxtBreak::AppendChar(FX_WCHAR wch) {
 void CFX_TxtBreak::EndBreak_UpdateArabicShapes() {
   ASSERT(m_bArabicShapes);
   int32_t iCount = m_pCurLine->CountChars();
-  if (iCount < 2) {
+  if (iCount < 2)
     return;
-  }
+
   int32_t& iLineWidth = m_pCurLine->m_iWidth;
   CFX_TxtChar* pCur = m_pCurLine->GetCharPtr(0);
   bool bPrevNum = (pCur->m_dwCharStyles & FX_TXTCHARSTYLE_ArabicIndic) != 0;
@@ -632,23 +613,24 @@ void CFX_TxtBreak::EndBreak_UpdateArabicShapes() {
       pNext = nullptr;
       bNextNum = false;
     }
+
     wch = pCur->m_wCharCode;
     if (wch == L'.') {
       if (bPrevNum && bNextNum) {
         iRotation = m_iRotation;
-        if (m_bVertical && (pCur->m_dwCharProps & 0x8000) != 0) {
+        if (m_bVertical && (pCur->m_dwCharProps & 0x8000) != 0)
           iRotation = ((iRotation + 1) & 0x03);
-        }
+
         wForm = wch == L'.' ? 0x066B : 0x066C;
         iLineWidth -= pCur->m_iCharWidth;
         if (m_bCombText) {
           iCharWidth = m_iCombWidth;
         } else {
-          if (m_bVertical != FX_IsOdd(iRotation)) {
+          if (m_bVertical != FX_IsOdd(iRotation))
             iCharWidth = 1000;
-          } else if (!m_pFont->GetCharWidth(wForm, iCharWidth, false)) {
+          else if (!m_pFont->GetCharWidth(wForm, iCharWidth, false))
             iCharWidth = m_iDefChar;
-          }
+
           iCharWidth *= m_iFontSize;
           iCharWidth = iCharWidth * m_iHorScale / 100;
         }
@@ -685,6 +667,7 @@ bool CFX_TxtBreak::EndBreak_SplitLine(CFX_TxtLine* pNextLine,
         break;
     }
   }
+
   iCount = m_pCurLine->CountChars();
   CFX_TxtPieceArray* pCurPieces = m_pCurLine->m_pLinePieces.get();
   CFX_TxtPiece tp;
@@ -716,7 +699,8 @@ void CFX_TxtBreak::EndBreak_BidiLine(CFX_TPOArray& tpos, uint32_t dwStatus) {
   CFX_TxtPiece tp;
   FX_TPO tpo;
   CFX_TxtChar* pTC;
-  int32_t i, j;
+  int32_t i;
+  int32_t j;
   std::vector<CFX_TxtChar>& chars = *m_pCurLine->m_pLineChars.get();
   int32_t iCount = m_pCurLine->CountChars();
   bool bDone = (m_pCurLine->m_iArabicChars > 0 || m_bCurRTL);
@@ -725,23 +709,24 @@ void CFX_TxtBreak::EndBreak_BidiLine(CFX_TPOArray& tpos, uint32_t dwStatus) {
     for (i = 0; i < iCount; i++) {
       pTC = &chars[i];
       pTC->m_iBidiPos = i;
-      if (pTC->GetCharType() != FX_CHARTYPE_Control) {
+      if (pTC->GetCharType() != FX_CHARTYPE_Control)
         iBidiNum = i;
-      }
-      if (i == 0) {
+      if (i == 0)
         pTC->m_iBidiLevel = 1;
-      }
     }
     FX_BidiLine(chars, iBidiNum + 1, m_bCurRTL ? 1 : 0);
   }
+
   CFX_TxtPieceArray* pCurPieces = m_pCurLine->m_pLinePieces.get();
   if (!m_bPagination &&
       (bDone || (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_MutipleFormat) != 0)) {
     tp.m_dwStatus = FX_TXTBREAK_PieceBreak;
     tp.m_iStartPos = m_pCurLine->m_iStart;
     tp.m_pChars = m_pCurLine->m_pLineChars.get();
-    int32_t iBidiLevel = -1, iCharWidth;
-    i = 0, j = -1;
+    int32_t iBidiLevel = -1;
+    int32_t iCharWidth;
+    i = 0;
+    j = -1;
     while (i < iCount) {
       pTC = &chars[i];
       if (iBidiLevel < 0) {
@@ -759,9 +744,9 @@ void CFX_TxtBreak::EndBreak_BidiLine(CFX_TPOArray& tpos, uint32_t dwStatus) {
         if (iBidiLevel == pTC->m_iBidiLevel) {
           tp.m_dwStatus = pTC->m_dwStatus;
           iCharWidth = pTC->m_iCharWidth;
-          if (iCharWidth > 0) {
+          if (iCharWidth > 0)
             tp.m_iWidth += iCharWidth;
-          }
+
           i++;
         }
         tp.m_iChars = i - tp.m_iStartChar;
@@ -774,9 +759,9 @@ void CFX_TxtBreak::EndBreak_BidiLine(CFX_TPOArray& tpos, uint32_t dwStatus) {
         iBidiLevel = -1;
       } else {
         iCharWidth = pTC->m_iCharWidth;
-        if (iCharWidth > 0) {
+        if (iCharWidth > 0)
           tp.m_iWidth += iCharWidth;
-        }
+
         i++;
       }
     }
@@ -824,9 +809,13 @@ void CFX_TxtBreak::EndBreak_BidiLine(CFX_TPOArray& tpos, uint32_t dwStatus) {
 void CFX_TxtBreak::EndBreak_Alignment(CFX_TPOArray& tpos,
                                       bool bAllChars,
                                       uint32_t dwStatus) {
-  int32_t iNetWidth = m_pCurLine->m_iWidth, iGapChars = 0, iCharWidth;
+  int32_t iNetWidth = m_pCurLine->m_iWidth;
+  int32_t iGapChars = 0;
+  int32_t iCharWidth;
   CFX_TxtPieceArray* pCurPieces = m_pCurLine->m_pLinePieces.get();
-  int32_t i, j, iCount = pCurPieces->GetSize();
+  int32_t i;
+  int32_t j;
+  int32_t iCount = pCurPieces->GetSize();
   bool bFind = false;
   FX_TPO tpo;
   CFX_TxtChar* pTC;
@@ -834,38 +823,35 @@ void CFX_TxtBreak::EndBreak_Alignment(CFX_TPOArray& tpos,
   for (i = iCount - 1; i > -1; i--) {
     tpo = tpos.GetAt(i);
     CFX_TxtPiece& ttp = pCurPieces->GetAt(tpo.index);
-    if (!bFind) {
+    if (!bFind)
       iNetWidth = ttp.GetEndPos();
-    }
+
     bool bArabic = FX_IsOdd(ttp.m_iBidiLevel);
     j = bArabic ? 0 : ttp.m_iChars - 1;
     while (j > -1 && j < ttp.m_iChars) {
       pTC = ttp.GetCharPtr(j);
-      if (pTC->m_nBreakType == FX_LBT_DIRECT_BRK) {
+      if (pTC->m_nBreakType == FX_LBT_DIRECT_BRK)
         iGapChars++;
-      }
       if (!bFind || !bAllChars) {
         chartype = pTC->GetCharType();
         if (chartype == FX_CHARTYPE_Space || chartype == FX_CHARTYPE_Control) {
           if (!bFind) {
             iCharWidth = pTC->m_iCharWidth;
-            if (bAllChars && iCharWidth > 0) {
+            if (bAllChars && iCharWidth > 0)
               iNetWidth -= iCharWidth;
-            }
           }
         } else {
           bFind = true;
-          if (!bAllChars) {
+          if (!bAllChars)
             break;
-          }
         }
       }
       j += bArabic ? 1 : -1;
     }
-    if (!bAllChars && bFind) {
+    if (!bAllChars && bFind)
       break;
-    }
   }
+
   int32_t iOffset = m_iLineWidth - iNetWidth;
   int32_t iLowerAlignment = (m_iCurAlignment & FX_TXTLINEALIGNMENT_LowerMask);
   int32_t iHigherAlignment = (m_iCurAlignment & FX_TXTLINEALIGNMENT_HigherMask);
@@ -876,32 +862,29 @@ void CFX_TxtBreak::EndBreak_Alignment(CFX_TPOArray& tpos,
     for (i = 0; i < iCount; i++) {
       tpo = tpos.GetAt(i);
       CFX_TxtPiece& ttp = pCurPieces->GetAt(tpo.index);
-      if (iStart < -1) {
+      if (iStart < -1)
         iStart = ttp.m_iStartPos;
-      } else {
+      else
         ttp.m_iStartPos = iStart;
-      }
-      int32_t k;
+
       for (j = 0; j < ttp.m_iChars; j++) {
         pTC = ttp.GetCharPtr(j);
-        if (pTC->m_nBreakType != FX_LBT_DIRECT_BRK || pTC->m_iCharWidth < 0) {
+        if (pTC->m_nBreakType != FX_LBT_DIRECT_BRK || pTC->m_iCharWidth < 0)
           continue;
-        }
-        k = iOffset / iGapChars;
+
+        int32_t k = iOffset / iGapChars;
         pTC->m_iCharWidth += k;
         ttp.m_iWidth += k;
         iOffset -= k;
         iGapChars--;
-        if (iGapChars < 1) {
+        if (iGapChars < 1)
           break;
-        }
       }
       iStart += ttp.m_iWidth;
     }
   } else if (iLowerAlignment > FX_TXTLINEALIGNMENT_Left) {
-    if (iLowerAlignment == FX_TXTLINEALIGNMENT_Center) {
+    if (iLowerAlignment == FX_TXTLINEALIGNMENT_Center)
       iOffset /= 2;
-    }
     if (iOffset > 0) {
       for (i = 0; i < iCount; i++) {
         CFX_TxtPiece& ttp = pCurPieces->GetAt(i);
@@ -918,11 +901,10 @@ uint32_t CFX_TxtBreak::EndBreak(uint32_t dwStatus) {
   int32_t iCount = pCurPieces->GetSize();
   if (iCount > 0) {
     CFX_TxtPiece* pLastPiece = pCurPieces->GetPtrAt(--iCount);
-    if (dwStatus > FX_TXTBREAK_PieceBreak) {
+    if (dwStatus > FX_TXTBREAK_PieceBreak)
       pLastPiece->m_dwStatus = dwStatus;
-    } else {
+    else
       dwStatus = pLastPiece->m_dwStatus;
-    }
     return dwStatus;
   } else {
     CFX_TxtLine* pLastLine = GetTxtLine();
@@ -931,44 +913,40 @@ uint32_t CFX_TxtBreak::EndBreak(uint32_t dwStatus) {
       iCount = pCurPieces->GetSize();
       if (iCount-- > 0) {
         CFX_TxtPiece* pLastPiece = pCurPieces->GetPtrAt(iCount);
-        if (dwStatus > FX_TXTBREAK_PieceBreak) {
+        if (dwStatus > FX_TXTBREAK_PieceBreak)
           pLastPiece->m_dwStatus = dwStatus;
-        } else {
+        else
           dwStatus = pLastPiece->m_dwStatus;
-        }
         return dwStatus;
       }
       return FX_TXTBREAK_None;
     }
+
     iCount = m_pCurLine->CountChars();
-    if (iCount < 1) {
+    if (iCount < 1)
       return FX_TXTBREAK_None;
-    }
     if (!m_bPagination) {
       CFX_TxtChar* pTC = m_pCurLine->GetCharPtr(iCount - 1);
       pTC->m_dwStatus = dwStatus;
     }
-    if (dwStatus <= FX_TXTBREAK_PieceBreak) {
+    if (dwStatus <= FX_TXTBREAK_PieceBreak)
       return dwStatus;
-    }
   }
+
   m_iReady = (m_pCurLine == m_pTxtLine1.get()) ? 1 : 2;
   CFX_TxtLine* pNextLine =
       (m_pCurLine == m_pTxtLine1.get()) ? m_pTxtLine2.get() : m_pTxtLine1.get();
   bool bAllChars = (m_iCurAlignment > FX_TXTLINEALIGNMENT_Right);
   CFX_TPOArray tpos(100);
   CFX_Char* pTC;
-  if (m_bArabicShapes) {
+  if (m_bArabicShapes)
     EndBreak_UpdateArabicShapes();
+  if (!EndBreak_SplitLine(pNextLine, bAllChars, dwStatus)) {
+    EndBreak_BidiLine(tpos, dwStatus);
+    if (!m_bPagination && m_iCurAlignment > FX_TXTLINEALIGNMENT_Left)
+      EndBreak_Alignment(tpos, bAllChars, dwStatus);
   }
-  if (EndBreak_SplitLine(pNextLine, bAllChars, dwStatus)) {
-    goto EndBreak_Ret;
-  }
-  EndBreak_BidiLine(tpos, dwStatus);
-  if (!m_bPagination && m_iCurAlignment > FX_TXTLINEALIGNMENT_Left) {
-    EndBreak_Alignment(tpos, bAllChars, dwStatus);
-  }
-EndBreak_Ret:
+
   m_pCurLine = pNextLine;
   pTC = GetLastChar(0, false);
   m_eCharType = pTC ? pTC->GetCharType() : FX_CHARTYPE_Unknown;
@@ -984,63 +962,66 @@ int32_t CFX_TxtBreak::GetBreakPos(std::vector<CFX_TxtChar>& ca,
                                   bool bAllChars,
                                   bool bOnlyBrk) {
   int32_t iLength = pdfium::CollectionSize<int32_t>(ca) - 1;
-  if (iLength < 1) {
+  if (iLength < 1)
     return iLength;
-  }
-  int32_t iBreak = -1, iBreakPos = -1, iIndirect = -1, iIndirectPos = -1,
-          iLast = -1, iLastPos = -1;
+
+  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 (m_bSingleLine || iEndPos <= m_iLineWidth) {
-    if (!bAllChars) {
+    if (!bAllChars)
       return iLength;
-    }
+
     iBreak = iLength;
     iBreakPos = iEndPos;
   }
+
   bool bSpaceBreak = (m_dwPolicies & FX_TXTBREAKPOLICY_SpaceBreak) != 0;
   bool bNumberBreak = (m_dwPolicies & FX_TXTBREAKPOLICY_NumberBreak) != 0;
   FX_LINEBREAKTYPE eType;
-  uint32_t nCodeProp, nCur, nNext;
+  uint32_t nCodeProp;
+  uint32_t nCur;
+  uint32_t nNext;
   CFX_Char* pCur = &ca[iLength--];
-  if (bAllChars) {
+  if (bAllChars)
     pCur->m_nBreakType = FX_LBT_UNKNOWN;
-  }
+
   nCodeProp = pCur->m_dwCharProps;
   nNext = nCodeProp & 0x003F;
   int32_t iCharWidth = pCur->m_iCharWidth;
-  if (iCharWidth > 0) {
+  if (iCharWidth > 0)
     iEndPos -= iCharWidth;
-  }
+
   while (iLength >= 0) {
     pCur = &ca[iLength];
     nCodeProp = pCur->m_dwCharProps;
     nCur = nCodeProp & 0x003F;
     if (nCur == FX_CBP_SP) {
-      if (nNext == FX_CBP_SP) {
+      if (nNext == FX_CBP_SP)
         eType = bSpaceBreak ? FX_LBT_DIRECT_BRK : FX_LBT_PROHIBITED_BRK;
-      } else {
+      else
         eType = gs_FX_LineBreak_PairTable[nCur][nNext];
-      }
     } else if (bNumberBreak && nCur == FX_CBP_NU && nNext == FX_CBP_NU) {
       eType = FX_LBT_DIRECT_BRK;
     } else {
-      if (nNext == FX_CBP_SP) {
+      if (nNext == FX_CBP_SP)
         eType = FX_LBT_PROHIBITED_BRK;
-      } else {
+      else
         eType = gs_FX_LineBreak_PairTable[nCur][nNext];
-      }
-    }
-    if (bAllChars) {
-      pCur->m_nBreakType = (uint8_t)eType;
     }
+    if (bAllChars)
+      pCur->m_nBreakType = static_cast<uint8_t>(eType);
     if (!bOnlyBrk) {
       if (m_bSingleLine || iEndPos <= m_iLineWidth ||
           (nCur == FX_CBP_SP && !bSpaceBreak)) {
         if (eType == FX_LBT_DIRECT_BRK && iBreak < 0) {
           iBreak = iLength;
           iBreakPos = iEndPos;
-          if (!bAllChars) {
+          if (!bAllChars)
             return iLength;
-          }
         } else if (eType == FX_LBT_INDIRECT_BRK && iIndirect < 0) {
           iIndirect = iLength;
           iIndirectPos = iEndPos;
@@ -1051,16 +1032,14 @@ int32_t CFX_TxtBreak::GetBreakPos(std::vector<CFX_TxtChar>& ca,
         }
       }
       iCharWidth = pCur->m_iCharWidth;
-      if (iCharWidth > 0) {
+      if (iCharWidth > 0)
         iEndPos -= iCharWidth;
-      }
     }
     nNext = nCodeProp & 0x003F;
     iLength--;
   }
-  if (bOnlyBrk) {
+  if (bOnlyBrk)
     return 0;
-  }
   if (iBreak > -1) {
     iEndPos = iBreakPos;
     return iBreak;
@@ -1081,15 +1060,15 @@ void CFX_TxtBreak::SplitTextLine(CFX_TxtLine* pCurLine,
                                  bool bAllChars) {
   ASSERT(pCurLine && pNextLine);
   int32_t iCount = pCurLine->CountChars();
-  if (iCount < 2) {
+  if (iCount < 2)
     return;
-  }
+
   int32_t iEndPos = pCurLine->m_iWidth;
   std::vector<CFX_TxtChar>& curChars = *pCurLine->m_pLineChars;
   int32_t iCharPos = GetBreakPos(curChars, iEndPos, bAllChars, false);
-  if (iCharPos < 0) {
+  if (iCharPos < 0)
     iCharPos = 0;
-  }
+
   iCharPos++;
   if (iCharPos >= iCount) {
     pNextLine->RemoveAll(true);
@@ -1097,6 +1076,9 @@ void CFX_TxtBreak::SplitTextLine(CFX_TxtLine* pCurLine,
     pTC->m_nBreakType = FX_LBT_UNKNOWN;
     return;
   }
+
+  // m_pLineChars is a unique_ptr<vector>. Assign the ref into nextChars
+  // so we can change the m_pLineChars vector ...
   std::vector<CFX_TxtChar>& nextChars = *pNextLine->m_pLineChars;
   nextChars =
       std::vector<CFX_TxtChar>(curChars.begin() + iCharPos, curChars.end());
@@ -1107,17 +1089,17 @@ void CFX_TxtBreak::SplitTextLine(CFX_TxtLine* pCurLine,
   iCount = pdfium::CollectionSize<int>(nextChars);
   int32_t iWidth = 0;
   for (int32_t i = 0; i < iCount; i++) {
-    pTC = &nextChars[i];
-    if (pTC->GetCharType() >= FX_CHARTYPE_ArabicAlef) {
+    if (nextChars[i].GetCharType() >= FX_CHARTYPE_ArabicAlef) {
       pCurLine->m_iArabicChars--;
       pNextLine->m_iArabicChars++;
     }
-    int32_t iCharWidth = pTC->m_iCharWidth;
+    int32_t iCharWidth = nextChars[i].m_iCharWidth;
     if (iCharWidth > 0)
       iWidth += iCharWidth;
     if (m_bPagination)
       continue;
-    pTC->m_dwStatus = 0;
+
+    nextChars[i].m_dwStatus = 0;
   }
   pNextLine->m_iWidth = iWidth;
 }
@@ -1129,26 +1111,24 @@ int32_t CFX_TxtBreak::CountBreakPieces() const {
 
 const CFX_TxtPiece* CFX_TxtBreak::GetBreakPiece(int32_t index) const {
   CFX_TxtPieceArray* pTxtPieces = GetTxtPieces();
-  if (!pTxtPieces) {
+  if (!pTxtPieces)
     return nullptr;
-  }
-  if (index < 0 || index >= pTxtPieces->GetSize()) {
+  if (index < 0 || index >= pTxtPieces->GetSize())
     return nullptr;
-  }
   return pTxtPieces->GetPtrAt(index);
 }
 
 void CFX_TxtBreak::ClearBreakPieces() {
   CFX_TxtLine* pTxtLine = GetTxtLine();
-  if (pTxtLine) {
+  if (pTxtLine)
     pTxtLine->RemoveAll(true);
-  }
   m_iReady = 0;
 }
 
 void CFX_TxtBreak::Reset() {
   m_eCharType = FX_CHARTYPE_Unknown;
-  m_iArabicContext = m_iCurArabicContext = 1;
+  m_iArabicContext = 1;
+  m_iCurArabicContext = 1;
   ResetArabicContext();
   m_pTxtLine1->RemoveAll(true);
   m_pTxtLine2->RemoveAll(true);
@@ -1165,9 +1145,9 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
                                     bool bCharCode,
                                     CFX_WideString* pWSForms,
                                     FX_AdjustCharDisplayPos pAdjustPos) const {
-  if (!pTxtRun || pTxtRun->iLength < 1) {
+  if (!pTxtRun || pTxtRun->iLength < 1)
     return 0;
-  }
+
   IFX_TxtAccess* pAccess = pTxtRun->pAccess;
   const FDE_TEXTEDITPIECE* pIdentity = pTxtRun->pIdentity;
   const FX_WCHAR* pStr = pTxtRun->wsStr.c_str();
@@ -1192,24 +1172,28 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
   bool bVerticalDoc = (dwStyles & FX_TXTLAYOUTSTYLE_VerticalLayout) != 0;
   bool bVerticalChar = (dwStyles & FX_TXTLAYOUTSTYLE_VerticalChars) != 0;
   int32_t iRotation = GetLineRotation(dwStyles) + pTxtRun->iCharRotation;
-  FX_FLOAT fX, fY, fCharWidth, fCharHeight;
+  FX_FLOAT fX = rtText.left;
+  FX_FLOAT fY;
+  FX_FLOAT fCharWidth;
+  FX_FLOAT fCharHeight;
   int32_t iHorScale = pTxtRun->iHorizontalScale;
   int32_t iVerScale = pTxtRun->iVerticalScale;
   bool bSkipSpace = pTxtRun->bSkipSpace;
   FX_FORMCHAR formChars[3];
   FX_FLOAT fYBase;
-  fX = rtText.left;
+
   if (bVerticalDoc) {
     fX += (rtText.width - fFontSize) / 2.0f;
     fYBase = bRTLPiece ? rtText.bottom() : rtText.top;
     fY = fYBase;
   } else {
-    if (bRTLPiece) {
+    if (bRTLPiece)
       fX = rtText.right();
-    }
+
     fYBase = rtText.top + (rtText.height - fFontSize) / 2.0f;
     fY = fYBase + fAscent;
   }
+
   int32_t iCount = 0;
   int32_t iNext = 0;
   FX_WCHAR wPrev = 0xFEFF;
@@ -1228,6 +1212,7 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
       wch = *pStr++;
       iWidth = *pWidths++;
     }
+
     uint32_t dwProps = FX_GetUnicodeProperties(wch);
     FX_CHARTYPE chartype = GetCharTypeFromProp(dwProps);
     if (chartype == FX_CHARTYPE_ArabicAlef && iWidth == 0) {
@@ -1235,6 +1220,7 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
       wLast = wch;
       continue;
     }
+
     if (chartype >= FX_CHARTYPE_ArabicAlef) {
       if (i < iLength) {
         if (pAccess) {
@@ -1242,31 +1228,30 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
           while (iNext <= iLength) {
             wNext = pAccess->GetChar(pIdentity, iNext);
             dwProps = FX_GetUnicodeProperties(wNext);
-            if ((dwProps & FX_CHARTYPEBITSMASK) != FX_CHARTYPE_Combination) {
+            if ((dwProps & FX_CHARTYPEBITSMASK) != FX_CHARTYPE_Combination)
               break;
-            }
+
             iNext++;
           }
-          if (iNext > iLength) {
+          if (iNext > iLength)
             wNext = 0xFEFF;
-          }
         } else {
           int32_t j = -1;
           do {
             j++;
-            if (i + j >= iLength) {
+            if (i + j >= iLength)
               break;
-            }
+
             wNext = pStr[j];
             dwProps = FX_GetUnicodeProperties(wNext);
           } while ((dwProps & FX_CHARTYPEBITSMASK) == FX_CHARTYPE_Combination);
-          if (i + j >= iLength) {
+          if (i + j >= iLength)
             wNext = 0xFEFF;
-          }
         }
       } else {
         wNext = 0xFEFF;
       }
+
       wForm = pdfium::arabic::GetFormChar(wch, wPrev, wNext);
       bLam = (wPrev == 0x0644 && wch == 0x0644 && wNext == 0x0647);
     } else if (chartype == FX_CHARTYPE_Combination) {
@@ -1279,13 +1264,11 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
           wNext = 0xFEFF;
           if (pAccess) {
             iNext = i + 1;
-            if (iNext <= iLength) {
+            if (iNext <= iLength)
               wNext = pAccess->GetChar(pIdentity, iNext);
-            }
           } else {
-            if (i < iLength) {
+            if (i < iLength)
               wNext = *pStr;
-            }
           }
           if (wch == 0x0651) {
             if (wNext >= 0x064C && wNext <= 0x0650) {
@@ -1304,67 +1287,61 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
       }
     } else if (chartype == FX_CHARTYPE_Numeric) {
       wForm = wch;
-      if (bArabicNumber) {
+      if (bArabicNumber)
         wForm += 0x0630;
-      }
     } else if (wch == L'.') {
       wForm = wch;
       if (bArabicNumber) {
         wNext = 0xFEFF;
         if (pAccess) {
           iNext = i + 1;
-          if (iNext <= iLength) {
+          if (iNext <= iLength)
             wNext = pAccess->GetChar(pIdentity, iNext);
-          }
         } else {
-          if (i < iLength) {
+          if (i < iLength)
             wNext = *pStr;
-          }
         }
-        if (wNext >= L'0' && wNext <= L'9') {
+        if (wNext >= L'0' && wNext <= L'9')
           wForm = 0x066B;
-        }
       }
     } else if (wch == L',') {
       wForm = wch;
-      if (bArabicComma) {
+      if (bArabicComma)
         wForm = 0x060C;
-      }
     } else if (bRTLPiece || bVerticalChar) {
       wForm = FX_GetMirrorChar(wch, dwProps, bRTLPiece, bVerticalChar);
     } else {
       wForm = wch;
     }
-    if (chartype != FX_CHARTYPE_Combination) {
+    if (chartype != FX_CHARTYPE_Combination)
       bShadda = false;
-    }
-    if (chartype < FX_CHARTYPE_ArabicAlef) {
+    if (chartype < FX_CHARTYPE_ArabicAlef)
       bLam = false;
-    }
+
     dwProps = FX_GetUnicodeProperties(wForm);
     int32_t iCharRotation = iRotation;
-    if (bVerticalChar && (dwProps & 0x8000) != 0) {
+    if (bVerticalChar && (dwProps & 0x8000) != 0)
       iCharRotation++;
-    }
+
     iCharRotation %= 4;
     bool bEmptyChar =
         (chartype >= FX_CHARTYPE_Tab && chartype <= FX_CHARTYPE_Control);
-    if (wForm == 0xFEFF) {
+    if (wForm == 0xFEFF)
       bEmptyChar = true;
-    }
+
     int32_t iForms = bLam ? 3 : 1;
     iCount += (bEmptyChar && bSkipSpace) ? 0 : iForms;
     if (!pCharPos) {
-      if (iWidth > 0) {
+      if (iWidth > 0)
         wPrev = wch;
-      }
       wLast = wch;
       continue;
     }
+
     int32_t iCharWidth = iWidth;
-    if (iCharWidth < 0) {
+    if (iCharWidth < 0)
       iCharWidth = -iCharWidth;
-    }
+
     iCharWidth /= iFontSize;
     formChars[0].wch = wch;
     formChars[0].wForm = wForm;
@@ -1379,6 +1356,7 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
       pFont->GetCharWidth(0x0670, iCharWidth, false);
       formChars[2].iWidth = iCharWidth;
     }
+
     for (int32_t j = 0; j < iForms; j++) {
       wForm = (FX_WCHAR)formChars[j].wForm;
       iCharWidth = formChars[j].iWidth;
@@ -1394,10 +1372,10 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
         pCharPos->m_ExtGID = pCharPos->m_GlyphIndex;
 #endif
         pCharPos->m_FontCharWidth = iCharWidth;
-        if (pWSForms) {
+        if (pWSForms)
           *pWSForms += wForm;
-        }
       }
+
       int32_t iCharHeight;
       if (bVerticalDoc) {
         iCharHeight = iCharWidth;
@@ -1405,14 +1383,14 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
       } else {
         iCharHeight = 1000;
       }
+
       fCharWidth = fFontSize * iCharWidth / 1000.0f;
       fCharHeight = fFontSize * iCharHeight / 1000.0f;
       if (bRTLPiece && chartype != FX_CHARTYPE_Combination) {
-        if (bVerticalDoc) {
+        if (bVerticalDoc)
           fY -= fCharHeight;
-        } else {
+        else
           fX -= fCharWidth;
-        }
       }
       if (!bEmptyChar || (bEmptyChar && !bSkipSpace)) {
         pCharPos->m_Origin = CFX_PointF(fX, fY);
@@ -1460,12 +1438,12 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
         pCharPos->m_Origin.y -= ptOffset.y;
       }
       if (!bRTLPiece && chartype != FX_CHARTYPE_Combination) {
-        if (bVerticalDoc) {
+        if (bVerticalDoc)
           fY += fCharHeight;
-        } else {
+        else
           fX += fCharWidth;
-        }
       }
+
       if (!bEmptyChar || (bEmptyChar && !bSkipSpace)) {
         pCharPos->m_bGlyphAdjust = true;
         if (bVerticalDoc) {
@@ -1536,9 +1514,8 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
         pCharPos++;
       }
     }
-    if (iWidth > 0) {
-      wPrev = (FX_WCHAR)formChars[0].wch;
-    }
+    if (iWidth > 0)
+      wPrev = static_cast<FX_WCHAR>(formChars[0].wch);
     wLast = wch;
   }
   return iCount;
@@ -1572,17 +1549,20 @@ int32_t CFX_TxtBreak::GetCharRects(const FX_TXTRUN* pTxtRun,
   FX_FLOAT fHeight = FXSYS_fabs(bbox.height * fScale);
   rtArray->clear();
   rtArray->resize(iLength);
+
   bool bVertical = (pTxtRun->dwStyles & FX_TXTLAYOUTSTYLE_VerticalLayout) != 0;
   bool bSingleLine = (pTxtRun->dwStyles & FX_TXTLAYOUTSTYLE_SingleLine) != 0;
   bool bCombText = (pTxtRun->dwStyles & FX_TXTLAYOUTSTYLE_CombText) != 0;
-  FX_WCHAR wch, wLineBreakChar = pTxtRun->wLineBreakChar;
+  FX_WCHAR wch;
+  FX_WCHAR wLineBreakChar = pTxtRun->wLineBreakChar;
   int32_t iCharSize;
-  FX_FLOAT fCharSize, fStart;
-  if (bVertical) {
+  FX_FLOAT fCharSize;
+  FX_FLOAT fStart;
+  if (bVertical)
     fStart = bRTLPiece ? rect.bottom() : rect.top;
-  } else {
+  else
     fStart = bRTLPiece ? rect.right() : rect.left;
-  }
+
   for (int32_t i = 0; i < iLength; i++) {
     if (pAccess) {
       wch = pAccess->GetChar(pIdentity, i);
@@ -1591,7 +1571,7 @@ int32_t CFX_TxtBreak::GetCharRects(const FX_TXTRUN* pTxtRun,
       wch = *pStr++;
       iCharSize = *pWidths++;
     }
-    fCharSize = (FX_FLOAT)iCharSize / 20000.0f;
+    fCharSize = static_cast<FX_FLOAT>(iCharSize) / 20000.0f;
     bool bRet = (!bSingleLine && FX_IsCtrlCode(wch));
     if (!(wch == L'\v' || wch == L'\f' || wch == 0x2028 || wch == 0x2029 ||
           (wLineBreakChar != 0xFEFF && wch == wLineBreakChar))) {
@@ -1620,6 +1600,7 @@ int32_t CFX_TxtBreak::GetCharRects(const FX_TXTRUN* pTxtRun,
       }
       rect.width = fCharSize;
     }
+
     if (bCharBBox && !bRet) {
       int32_t iCharWidth = 1000;
       pFont->GetCharWidth(wch, iCharWidth, false);
@@ -1627,9 +1608,8 @@ int32_t CFX_TxtBreak::GetCharRects(const FX_TXTRUN* pTxtRun,
       if (iCharWidth > 0) {
         fCharWidth = iCharWidth * fScale;
         fRTLeft = fLeft;
-        if (bCombText) {
+        if (bCombText)
           fRTLeft = (rect.width - fCharWidth) / 2.0f;
-        }
       }
       CFX_RectF rtBBoxF;
       if (bVertical) {
diff --git a/xfa/fgas/layout/fgas_textbreak.h b/xfa/fgas/layout/fgas_textbreak.h
index bfd71c2987..a217d1636e 100644
--- a/xfa/fgas/layout/fgas_textbreak.h
+++ b/xfa/fgas/layout/fgas_textbreak.h
@@ -240,6 +240,7 @@ class CFX_TxtBreak {
   uint32_t AppendChar_Others(CFX_TxtChar* pCurChar, int32_t iRotation);
 
  private:
+  void FontChanged();
   void SetBreakStatus();
   int32_t GetLineRotation(uint32_t dwStyles) const;
   CFX_TxtChar* GetLastChar(int32_t index, bool bOmitChar = true) const;