Collapse xfa/src/fee directorieschromium/2674chromium/2673

This CL moves xfa/src/fee/src/fee up to xfa/src/fee and moves the
xfa/src/fee/include files up to xfa/src/fee.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1778633003 .

1 files changed, 650 insertions, 0 deletions

diff --git a/xfa/src/fee/fde_txtedtpage.cpp b/xfa/src/fee/fde_txtedtpage.cpp
new file mode 100644
index 0000000000..932832fd6f
--- /dev/null
+++ b/xfa/src/fee/fde_txtedtpage.cpp
@@ -0,0 +1,650 @@
+// 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/src/fee/fde_txtedtpage.h"
+
+#include <algorithm>
+
+#include "xfa/src/fee/fx_wordbreak/fx_wordbreak.h"
+#include "xfa/src/fee/fde_txtedtbuf.h"
+#include "xfa/src/fee/fde_txtedtengine.h"
+#include "xfa/src/fee/fde_txtedtparag.h"
+#include "xfa/src/fee/ifde_txtedtbuf.h"
+#include "xfa/src/fee/ifde_txtedtengine.h"
+#include "xfa/src/fee/ifde_txtedtpage.h"
+
+#define FDE_TXTEDT_TOLERANCE 0.1f
+
+IFDE_TxtEdtPage* IFDE_TxtEdtPage::Create(IFDE_TxtEdtEngine* pEngine,
+                                         int32_t nIndex) {
+  return (IFDE_TxtEdtPage*)new CFDE_TxtEdtPage(pEngine, nIndex);
+}
+CFDE_TxtEdtTextSet::CFDE_TxtEdtTextSet(CFDE_TxtEdtPage* pPage)
+    : m_pPage(pPage) {}
+CFDE_TxtEdtTextSet::~CFDE_TxtEdtTextSet() {}
+FDE_VISUALOBJTYPE CFDE_TxtEdtTextSet::GetType() {
+  return FDE_VISUALOBJ_Text;
+}
+FX_BOOL CFDE_TxtEdtTextSet::GetBBox(FDE_HVISUALOBJ hVisualObj,
+                                    CFX_RectF& bbox) {
+  return FALSE;
+}
+FX_BOOL CFDE_TxtEdtTextSet::GetMatrix(FDE_HVISUALOBJ hVisualObj,
+                                      CFX_Matrix& matrix) {
+  return FALSE;
+}
+FX_BOOL CFDE_TxtEdtTextSet::GetRect(FDE_HVISUALOBJ hVisualObj, CFX_RectF& rt) {
+  rt = ((FDE_TEXTEDITPIECE*)(hVisualObj))->rtPiece;
+  return TRUE;
+}
+FX_BOOL CFDE_TxtEdtTextSet::GetClip(FDE_HVISUALOBJ hVisualObj, CFX_RectF& rt) {
+  return FALSE;
+}
+int32_t CFDE_TxtEdtTextSet::GetString(FDE_HVISUALOBJ hText,
+                                      CFX_WideString& wsText) {
+  FDE_TEXTEDITPIECE* pPiece = (FDE_TEXTEDITPIECE*)hText;
+  FX_WCHAR* pBuffer = wsText.GetBuffer(pPiece->nCount);
+  for (int32_t i = 0; i < pPiece->nCount; i++) {
+    pBuffer[i] = m_pPage->GetChar((void*)hText, i);
+  }
+  wsText.ReleaseBuffer(pPiece->nCount);
+  return pPiece->nCount;
+}
+IFX_Font* CFDE_TxtEdtTextSet::GetFont(FDE_HVISUALOBJ hText) {
+  return m_pPage->GetEngine()->GetEditParams()->pFont;
+}
+FX_FLOAT CFDE_TxtEdtTextSet::GetFontSize(FDE_HVISUALOBJ hText) {
+  return m_pPage->GetEngine()->GetEditParams()->fFontSize;
+}
+FX_ARGB CFDE_TxtEdtTextSet::GetFontColor(FDE_HVISUALOBJ hText) {
+  return m_pPage->GetEngine()->GetEditParams()->dwFontColor;
+}
+int32_t CFDE_TxtEdtTextSet::GetDisplayPos(FDE_HVISUALOBJ hText,
+                                          FXTEXT_CHARPOS* pCharPos,
+                                          FX_BOOL bCharCode,
+                                          CFX_WideString* pWSForms) {
+  if (hText == NULL) {
+    return 0;
+  }
+  FDE_TEXTEDITPIECE* pPiece = (FDE_TEXTEDITPIECE*)hText;
+  int32_t nLength = pPiece->nCount;
+  if (nLength < 1) {
+    return 0;
+  }
+  CFDE_TxtEdtEngine* pEngine = (CFDE_TxtEdtEngine*)(m_pPage->GetEngine());
+  const FDE_TXTEDTPARAMS* pTextParams = pEngine->GetEditParams();
+  IFX_TxtBreak* pBreak = pEngine->GetTextBreak();
+  FX_DWORD dwLayoutStyle = pBreak->GetLayoutStyles();
+  FX_TXTRUN tr;
+  tr.pAccess = m_pPage;
+  tr.pIdentity = (void*)hText;
+  tr.pStr = NULL;
+  tr.pWidths = NULL;
+  tr.iLength = nLength;
+  tr.pFont = pTextParams->pFont;
+  tr.fFontSize = pTextParams->fFontSize;
+  tr.dwStyles = dwLayoutStyle;
+  tr.iCharRotation = pTextParams->nCharRotation;
+  tr.dwCharStyles = pPiece->dwCharStyles;
+  tr.pRect = &(pPiece->rtPiece);
+  tr.wLineBreakChar = pTextParams->wLineBreakChar;
+  return pBreak->GetDisplayPos(&tr, pCharPos, bCharCode, pWSForms);
+}
+int32_t CFDE_TxtEdtTextSet::GetCharRects(FDE_HVISUALOBJ hText,
+                                         CFX_RectFArray& rtArray) {
+  return GetCharRects_Impl(hText, rtArray);
+}
+int32_t CFDE_TxtEdtTextSet::GetCharRects_Impl(FDE_HVISUALOBJ hText,
+                                              CFX_RectFArray& rtArray,
+                                              FX_BOOL bBBox) {
+  if (hText == NULL) {
+    return 0;
+  }
+  FDE_TEXTEDITPIECE* pPiece = (FDE_TEXTEDITPIECE*)hText;
+  CFDE_TxtEdtEngine* pEngine = (CFDE_TxtEdtEngine*)(m_pPage->GetEngine());
+  int32_t nLength = pPiece->nCount;
+  if (nLength < 1) {
+    return 0;
+  }
+  const FDE_TXTEDTPARAMS* pTextParams = pEngine->GetEditParams();
+  FX_DWORD dwLayoutStyle = pEngine->GetTextBreak()->GetLayoutStyles();
+  FX_TXTRUN tr;
+  tr.pAccess = m_pPage;
+  tr.pIdentity = (void*)hText;
+  tr.pStr = NULL;
+  tr.pWidths = NULL;
+  tr.iLength = nLength;
+  tr.pFont = pTextParams->pFont;
+  tr.fFontSize = pTextParams->fFontSize;
+  tr.dwStyles = dwLayoutStyle;
+  tr.iCharRotation = pTextParams->nCharRotation;
+  tr.dwCharStyles = pPiece->dwCharStyles;
+  tr.pRect = &(pPiece->rtPiece);
+  tr.wLineBreakChar = pTextParams->wLineBreakChar;
+  return pEngine->GetTextBreak()->GetCharRects(&tr, rtArray, bBBox);
+}
+CFDE_TxtEdtPage::CFDE_TxtEdtPage(IFDE_TxtEdtEngine* pEngine, int32_t nPageIndex)
+    : m_pIter(nullptr),
+      m_pTextSet(nullptr),
+      m_pBgnParag(nullptr),
+      m_pEndParag(nullptr),
+      m_nRefCount(0),
+      m_nPageStart(-1),
+      m_nCharCount(0),
+      m_nPageIndex(nPageIndex),
+      m_bLoaded(FALSE),
+      m_pCharWidth(nullptr) {
+  FXSYS_memset(&m_rtPage, 0, sizeof(CFX_RectF));
+  FXSYS_memset(&m_rtPageMargin, 0, sizeof(CFX_RectF));
+  FXSYS_memset(&m_rtPageContents, 0, sizeof(CFX_RectF));
+  FXSYS_memset(&m_rtPageCanvas, 0, sizeof(CFX_RectF));
+  m_pEditEngine = (CFDE_TxtEdtEngine*)pEngine;
+}
+CFDE_TxtEdtPage::~CFDE_TxtEdtPage() {
+  m_PieceMassArr.RemoveAll(TRUE);
+  if (m_pTextSet) {
+    delete m_pTextSet;
+    m_pTextSet = NULL;
+  }
+  if (m_pCharWidth) {
+    delete[] m_pCharWidth;
+    m_pCharWidth = NULL;
+  }
+  if (m_pIter != NULL) {
+    m_pIter->Release();
+    m_pIter = NULL;
+  }
+}
+void CFDE_TxtEdtPage::Release() {
+  delete this;
+}
+IFDE_TxtEdtEngine* CFDE_TxtEdtPage::GetEngine() const {
+  return (IFDE_TxtEdtEngine*)m_pEditEngine;
+}
+FDE_VISUALOBJTYPE CFDE_TxtEdtPage::GetType() {
+  return FDE_VISUALOBJ_Text;
+}
+FX_BOOL CFDE_TxtEdtPage::GetBBox(FDE_HVISUALOBJ hVisualObj, CFX_RectF& bbox) {
+  return FALSE;
+}
+FX_BOOL CFDE_TxtEdtPage::GetMatrix(FDE_HVISUALOBJ hVisualObj,
+                                   CFX_Matrix& matrix) {
+  return FALSE;
+}
+FX_BOOL CFDE_TxtEdtPage::GetRect(FDE_HVISUALOBJ hVisualObj, CFX_RectF& rt) {
+  return FALSE;
+}
+FX_BOOL CFDE_TxtEdtPage::GetClip(FDE_HVISUALOBJ hVisualObj, CFX_RectF& rt) {
+  return FALSE;
+}
+int32_t CFDE_TxtEdtPage::GetCharRect(int32_t nIndex,
+                                     CFX_RectF& rect,
+                                     FX_BOOL bBBox) const {
+  FXSYS_assert(m_nRefCount > 0);
+  FXSYS_assert(nIndex >= 0 && nIndex < m_nCharCount);
+  if (m_nRefCount < 1) {
+    return 0;
+  }
+  int32_t nCount = m_PieceMassArr.GetSize();
+  for (int32_t i = 0; i < nCount; i++) {
+    const FDE_TEXTEDITPIECE* pPiece = m_PieceMassArr.GetPtrAt(i);
+    if (nIndex >= pPiece->nStart &&
+        nIndex < (pPiece->nStart + pPiece->nCount)) {
+      CFX_RectFArray rectArr;
+      if (bBBox) {
+        m_pTextSet->GetCharRects_Impl((FDE_HVISUALOBJ)pPiece, rectArr, bBBox);
+      } else {
+        m_pTextSet->GetCharRects((FDE_HVISUALOBJ)pPiece, rectArr);
+      }
+      rect = rectArr[nIndex - pPiece->nStart];
+      return pPiece->nBidiLevel;
+    }
+  }
+  FXSYS_assert(0);
+  return 0;
+}
+int32_t CFDE_TxtEdtPage::GetCharIndex(const CFX_PointF& fPoint,
+                                      FX_BOOL& bBefore) {
+  FX_BOOL bVertical = m_pEditEngine->GetEditParams()->dwLayoutStyles &
+                      FDE_TEXTEDITLAYOUT_DocVertical;
+  CFX_PointF ptF = fPoint;
+  NormalizePt2Rect(ptF, m_rtPageContents, FDE_TXTEDT_TOLERANCE);
+  int32_t nCount = m_PieceMassArr.GetSize();
+  CFX_RectF rtLine;
+  int32_t nBgn = 0;
+  int32_t nEnd = 0;
+  FX_BOOL bInLine = FALSE;
+  int32_t i = 0;
+  for (i = 0; i < nCount; i++) {
+    const FDE_TEXTEDITPIECE* pPiece = m_PieceMassArr.GetPtrAt(i);
+    if (!bInLine && (bVertical ? (pPiece->rtPiece.left <= ptF.x &&
+                                  pPiece->rtPiece.right() > ptF.x)
+                               : (pPiece->rtPiece.top <= ptF.y &&
+                                  pPiece->rtPiece.bottom() > ptF.y))) {
+      nBgn = nEnd = i;
+      rtLine = pPiece->rtPiece;
+      bInLine = TRUE;
+    } else if (bInLine) {
+      if (bVertical ? (!(pPiece->rtPiece.left <= ptF.x &&
+                         pPiece->rtPiece.right() > ptF.x))
+                    : (pPiece->rtPiece.bottom() <= ptF.y ||
+                       pPiece->rtPiece.top > ptF.y)) {
+        nEnd = i - 1;
+        break;
+      } else {
+        rtLine.Union(pPiece->rtPiece);
+      }
+    }
+  }
+  NormalizePt2Rect(ptF, rtLine, FDE_TXTEDT_TOLERANCE);
+  int32_t nCaret = 0;
+  FDE_TEXTEDITPIECE* pPiece = NULL;
+  for (i = nBgn; i <= nEnd; i++) {
+    pPiece = m_PieceMassArr.GetPtrAt(i);
+    nCaret = m_nPageStart + pPiece->nStart;
+    if (pPiece->rtPiece.Contains(ptF)) {
+      CFX_RectFArray rectArr;
+      m_pTextSet->GetCharRects((FDE_HVISUALOBJ)pPiece, rectArr);
+      int32_t nRtCount = rectArr.GetSize();
+      for (int32_t j = 0; j < nRtCount; j++) {
+        if (rectArr[j].Contains(ptF)) {
+          nCaret = m_nPageStart + pPiece->nStart + j;
+          if (nCaret >= m_pEditEngine->GetTextBufLength()) {
+            bBefore = TRUE;
+            return m_pEditEngine->GetTextBufLength();
+          }
+          FX_WCHAR wChar = m_pEditEngine->GetTextBuf()->GetCharByIndex(nCaret);
+          if (wChar == L'\n' || wChar == L'\r') {
+            if (wChar == L'\n') {
+              if (m_pEditEngine->GetTextBuf()->GetCharByIndex(nCaret - 1) ==
+                  L'\r') {
+                nCaret--;
+              }
+            }
+            bBefore = TRUE;
+            return nCaret;
+          }
+          if (bVertical
+                  ? (ptF.y > ((rectArr[j].top + rectArr[j].bottom()) / 2))
+                  : (ptF.x > ((rectArr[j].left + rectArr[j].right()) / 2))) {
+            bBefore = FX_IsOdd(pPiece->nBidiLevel);
+          } else {
+            bBefore = !FX_IsOdd(pPiece->nBidiLevel);
+          }
+          return nCaret;
+        }
+      }
+    }
+  }
+  bBefore = TRUE;
+  return nCaret;
+}
+int32_t CFDE_TxtEdtPage::GetCharStart() const {
+  return m_nPageStart;
+}
+int32_t CFDE_TxtEdtPage::GetCharCount() const {
+  return m_nCharCount;
+}
+int32_t CFDE_TxtEdtPage::GetDisplayPos(const CFX_RectF& rtClip,
+                                       FXTEXT_CHARPOS*& pCharPos,
+                                       CFX_RectF* pBBox) const {
+  pCharPos = FX_Alloc(FXTEXT_CHARPOS, m_nCharCount);
+  int32_t nCharPosCount = 0;
+  FDE_HVISUALOBJ hVisualObj = NULL;
+  int32_t nVisualObjCount = m_PieceMassArr.GetSize();
+  FXTEXT_CHARPOS* pos = pCharPos;
+  CFX_RectF rtObj;
+  for (int32_t i = 0; i < nVisualObjCount; i++) {
+    hVisualObj = (FDE_HVISUALOBJ)m_PieceMassArr.GetPtrAt(i);
+    m_pTextSet->GetRect(hVisualObj, rtObj);
+    if (!rtClip.IntersectWith(rtObj)) {
+      continue;
+    }
+    int32_t nCount = m_pTextSet->GetDisplayPos(hVisualObj, pos, FALSE);
+    nCharPosCount += nCount;
+    pos += nCount;
+  }
+  if ((nCharPosCount * 5) < (m_nCharCount << 2)) {
+    FXTEXT_CHARPOS* pTemp = FX_Alloc(FXTEXT_CHARPOS, nCharPosCount);
+    FXSYS_memcpy(pTemp, pCharPos, sizeof(FXTEXT_CHARPOS) * nCharPosCount);
+    FX_Free(pCharPos);
+    pCharPos = pTemp;
+  }
+  return nCharPosCount;
+}
+void CFDE_TxtEdtPage::CalcRangeRectArray(int32_t nStart,
+                                         int32_t nCount,
+                                         CFX_RectFArray& RectFArr) const {
+  int32_t nPieceCount = m_PieceMassArr.GetSize();
+  int32_t nEnd = nStart + nCount - 1;
+  FX_BOOL bInRange = FALSE;
+  for (int32_t i = 0; i < nPieceCount; i++) {
+    FDE_TEXTEDITPIECE* piece = m_PieceMassArr.GetPtrAt(i);
+    if (!bInRange) {
+      if (nStart >= piece->nStart && nStart < (piece->nStart + piece->nCount)) {
+        int32_t nRangeEnd = piece->nCount - 1;
+        FX_BOOL bEnd = FALSE;
+        if (nEnd >= piece->nStart && nEnd < (piece->nStart + piece->nCount)) {
+          nRangeEnd = nEnd - piece->nStart;
+          bEnd = TRUE;
+        }
+        CFX_RectFArray rcArr;
+        m_pTextSet->GetCharRects((FDE_HVISUALOBJ)piece, rcArr);
+        CFX_RectF rectPiece = rcArr[nStart - piece->nStart];
+        rectPiece.Union(rcArr[nRangeEnd]);
+        RectFArr.Add(rectPiece);
+        if (bEnd) {
+          return;
+        }
+        bInRange = TRUE;
+      }
+    } else {
+      if (nEnd >= piece->nStart && nEnd < (piece->nStart + piece->nCount)) {
+        CFX_RectFArray rcArr;
+        m_pTextSet->GetCharRects((FDE_HVISUALOBJ)piece, rcArr);
+        CFX_RectF rectPiece = rcArr[0];
+        rectPiece.Union(rcArr[nEnd - piece->nStart]);
+        RectFArr.Add(rectPiece);
+        return;
+      }
+      RectFArr.Add(piece->rtPiece);
+    }
+  }
+}
+
+int32_t CFDE_TxtEdtPage::SelectWord(const CFX_PointF& fPoint, int32_t& nCount) {
+  if (m_nRefCount < 0) {
+    return -1;
+  }
+  IFDE_TxtEdtBuf* pBuf = m_pEditEngine->GetTextBuf();
+  FX_BOOL bBefore;
+  int32_t nIndex = GetCharIndex(fPoint, bBefore);
+  if (nIndex == m_pEditEngine->GetTextBufLength()) {
+    nIndex = m_pEditEngine->GetTextBufLength() - 1;
+  }
+  if (nIndex < 0) {
+    return -1;
+  }
+  IFX_WordBreak* pIter = FX_WordBreak_Create();
+  pIter->Attach(new CFDE_TxtEdtBufIter((CFDE_TxtEdtBuf*)pBuf));
+  pIter->SetAt(nIndex);
+  nCount = pIter->GetWordLength();
+  int32_t nRet = pIter->GetWordPos();
+  pIter->Release();
+  return nRet;
+}
+FX_BOOL CFDE_TxtEdtPage::IsLoaded(const CFX_RectF* pClipBox) {
+  return m_bLoaded;
+}
+int32_t CFDE_TxtEdtPage::LoadPage(const CFX_RectF* pClipBox,
+                                  IFX_Pause* pPause) {
+  if (m_nRefCount > 0) {
+    m_nRefCount++;
+    return m_nRefCount;
+  }
+  IFDE_TxtEdtBuf* pBuf = m_pEditEngine->GetTextBuf();
+  const FDE_TXTEDTPARAMS* pParams = m_pEditEngine->GetEditParams();
+  if (m_pIter != NULL) {
+    m_pIter->Release();
+  }
+  FX_WCHAR wcAlias = 0;
+  if (pParams->dwMode & FDE_TEXTEDITMODE_Password) {
+    wcAlias = m_pEditEngine->GetAliasChar();
+  }
+  m_pIter = new CFDE_TxtEdtBufIter((CFDE_TxtEdtBuf*)pBuf, wcAlias);
+  IFX_TxtBreak* pBreak = m_pEditEngine->GetTextBreak();
+  pBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
+  pBreak->ClearBreakPieces();
+  int32_t nPageLineCount = m_pEditEngine->GetPageLineCount();
+  int32_t nStartLine = nPageLineCount * m_nPageIndex;
+  int32_t nEndLine = std::min((nStartLine + nPageLineCount - 1),
+                              (m_pEditEngine->GetLineCount() - 1));
+  int32_t nPageStart, nPageEnd, nTemp, nBgnParag, nStartLineInParag, nEndParag,
+      nEndLineInParag;
+  nBgnParag = m_pEditEngine->Line2Parag(0, 0, nStartLine, nStartLineInParag);
+  m_pBgnParag = (CFDE_TxtEdtParag*)m_pEditEngine->GetParag(nBgnParag);
+  m_pBgnParag->LoadParag();
+  m_pBgnParag->GetLineRange(nStartLine - nStartLineInParag, nPageStart, nTemp);
+  nEndParag = m_pEditEngine->Line2Parag(nBgnParag, nStartLineInParag, nEndLine,
+                                        nEndLineInParag);
+  m_pEndParag = (CFDE_TxtEdtParag*)m_pEditEngine->GetParag(nEndParag);
+  m_pEndParag->LoadParag();
+  m_pEndParag->GetLineRange(nEndLine - nEndLineInParag, nPageEnd, nTemp);
+  nPageEnd += (nTemp - 1);
+  FX_BOOL bVertial = pParams->dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical;
+  FX_BOOL bLineReserve =
+      pParams->dwLayoutStyles & FDE_TEXTEDITLAYOUT_LineReserve;
+  FX_FLOAT fLineStart =
+      bVertial
+          ? (bLineReserve ? (pParams->fPlateWidth - pParams->fLineSpace) : 0.0f)
+          : 0.0f;
+  FX_FLOAT fLineStep =
+      (bVertial && bLineReserve) ? (-pParams->fLineSpace) : pParams->fLineSpace;
+  FX_FLOAT fLinePos = fLineStart;
+  if (m_pTextSet == NULL) {
+    m_pTextSet = new CFDE_TxtEdtTextSet(this);
+  }
+  m_PieceMassArr.RemoveAll(TRUE);
+  FX_DWORD dwBreakStatus = FX_TXTBREAK_None;
+  int32_t nPieceStart = 0;
+  if (m_pCharWidth != NULL) {
+    delete[] m_pCharWidth;
+  }
+  m_pCharWidth = new int32_t[nPageEnd - nPageStart + 1];
+  pBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
+  pBreak->ClearBreakPieces();
+  m_nPageStart = nPageStart;
+  m_nCharCount = nPageEnd - nPageStart + 1;
+  FX_BOOL bReload = FALSE;
+  FX_FLOAT fDefCharWidth = 0;
+  IFX_CharIter* pIter = m_pIter->Clone();
+  pIter->SetAt(nPageStart);
+  m_pIter->SetAt(nPageStart);
+  FX_BOOL bFirstPiece = TRUE;
+  do {
+    if (bReload) {
+      dwBreakStatus = pBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
+    } else {
+      FX_WCHAR wAppend = pIter->GetChar();
+      dwBreakStatus = pBreak->AppendChar(wAppend);
+    }
+    if (pIter->GetAt() == nPageEnd && dwBreakStatus < FX_TXTBREAK_LineBreak) {
+      dwBreakStatus = pBreak->EndBreak(FX_TXTBREAK_ParagraphBreak);
+    }
+    if (dwBreakStatus > FX_TXTBREAK_PieceBreak) {
+      int32_t nPieceCount = pBreak->CountBreakPieces();
+      for (int32_t j = 0; j < nPieceCount; j++) {
+        const CFX_TxtPiece* pPiece = pBreak->GetBreakPiece(j);
+        FDE_TEXTEDITPIECE TxtEdtPiece;
+        FXSYS_memset(&TxtEdtPiece, 0, sizeof(FDE_TEXTEDITPIECE));
+        TxtEdtPiece.nBidiLevel = pPiece->m_iBidiLevel;
+        TxtEdtPiece.nCount = pPiece->GetLength();
+        TxtEdtPiece.nStart = nPieceStart;
+        TxtEdtPiece.dwCharStyles = pPiece->m_dwCharStyles;
+        if (FX_IsOdd(pPiece->m_iBidiLevel)) {
+          TxtEdtPiece.dwCharStyles |= FX_TXTCHARSTYLE_OddBidiLevel;
+        }
+        FX_FLOAT fParaBreakWidth = 0.0f;
+        if (pPiece->m_dwStatus > FX_TXTBREAK_PieceBreak) {
+          FX_WCHAR wRtChar = pParams->wLineBreakChar;
+          if (TxtEdtPiece.nCount >= 2) {
+            FX_WCHAR wChar = pBuf->GetCharByIndex(
+                m_nPageStart + TxtEdtPiece.nStart + TxtEdtPiece.nCount - 1);
+            FX_WCHAR wCharPre = pBuf->GetCharByIndex(
+                m_nPageStart + TxtEdtPiece.nStart + TxtEdtPiece.nCount - 2);
+            if (wChar == wRtChar) {
+              fParaBreakWidth += fDefCharWidth;
+            }
+            if (wCharPre == wRtChar) {
+              fParaBreakWidth += fDefCharWidth;
+            }
+          } else if (TxtEdtPiece.nCount >= 1) {
+            FX_WCHAR wChar = pBuf->GetCharByIndex(
+                m_nPageStart + TxtEdtPiece.nStart + TxtEdtPiece.nCount - 1);
+            if (wChar == wRtChar) {
+              fParaBreakWidth += fDefCharWidth;
+            }
+          }
+        }
+        if (pParams->dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical) {
+          TxtEdtPiece.rtPiece.left = fLinePos;
+          TxtEdtPiece.rtPiece.top = (FX_FLOAT)pPiece->m_iStartPos / 20000.0f;
+          TxtEdtPiece.rtPiece.width = pParams->fLineSpace;
+          TxtEdtPiece.rtPiece.height =
+              (FX_FLOAT)pPiece->m_iWidth / 20000.0f + fParaBreakWidth;
+        } else {
+          TxtEdtPiece.rtPiece.left = (FX_FLOAT)pPiece->m_iStartPos / 20000.0f;
+          TxtEdtPiece.rtPiece.top = fLinePos;
+          TxtEdtPiece.rtPiece.width =
+              (FX_FLOAT)pPiece->m_iWidth / 20000.0f + fParaBreakWidth;
+          TxtEdtPiece.rtPiece.height = pParams->fLineSpace;
+        }
+        if (bFirstPiece) {
+          m_rtPageContents = TxtEdtPiece.rtPiece;
+          bFirstPiece = FALSE;
+        } else {
+          m_rtPageContents.Union(TxtEdtPiece.rtPiece);
+        }
+        nPieceStart += TxtEdtPiece.nCount;
+        m_PieceMassArr.Add(TxtEdtPiece);
+        for (int32_t k = 0; k < TxtEdtPiece.nCount; k++) {
+          CFX_Char* ptc = pPiece->GetCharPtr(k);
+          m_pCharWidth[TxtEdtPiece.nStart + k] = ptc->m_iCharWidth;
+        }
+      }
+      fLinePos += fLineStep;
+      pBreak->ClearBreakPieces();
+    }
+    if (pIter->GetAt() == nPageEnd && dwBreakStatus == FX_TXTBREAK_LineBreak) {
+      bReload = TRUE;
+      pIter->Next(TRUE);
+    }
+  } while (pIter->Next(FALSE) && (pIter->GetAt() <= nPageEnd));
+  if (m_rtPageContents.left != 0) {
+    FX_FLOAT fDelta = 0.0f;
+    if (m_rtPageContents.width < pParams->fPlateWidth) {
+      if (pParams->dwAlignment & FDE_TEXTEDITALIGN_Right) {
+        fDelta = pParams->fPlateWidth - m_rtPageContents.width;
+      } else if (pParams->dwAlignment & FDE_TEXTEDITALIGN_Center) {
+        if ((pParams->dwLayoutStyles & FDE_TEXTEDITLAYOUT_CombText) &&
+            m_nCharCount > 1) {
+          int32_t nCount = m_nCharCount - 1;
+          int32_t n = (m_pEditEngine->m_nLimit - nCount) / 2;
+          fDelta = (m_rtPageContents.width / nCount) * n;
+        } else {
+          fDelta = (pParams->fPlateWidth - m_rtPageContents.width) / 2;
+        }
+      }
+    }
+    FX_FLOAT fOffset = m_rtPageContents.left - fDelta;
+    int32_t nCount = m_PieceMassArr.GetSize();
+    for (int32_t i = 0; i < nCount; i++) {
+      FDE_TEXTEDITPIECE* pPiece = m_PieceMassArr.GetPtrAt(i);
+      pPiece->rtPiece.Offset(-fOffset, 0.0f);
+    }
+    m_rtPageContents.Offset(-fOffset, 0.0f);
+  }
+  if (m_pEditEngine->GetEditParams()->dwLayoutStyles &
+      FDE_TEXTEDITLAYOUT_LastLineHeight) {
+    m_rtPageContents.height -= pParams->fLineSpace - pParams->fFontSize;
+    int32_t nCount = m_PieceMassArr.GetSize();
+    FDE_TEXTEDITPIECE* pPiece = m_PieceMassArr.GetPtrAt(nCount - 1);
+    pPiece->rtPiece.height = pParams->fFontSize;
+  }
+  pIter->Release();
+  m_nRefCount = 1;
+  m_bLoaded = TRUE;
+  return 0;
+}
+void CFDE_TxtEdtPage::UnloadPage(const CFX_RectF* pClipBox) {
+  FXSYS_assert(m_nRefCount > 0);
+  m_nRefCount--;
+  if (m_nRefCount == 0) {
+    m_PieceMassArr.RemoveAll();
+    if (m_pTextSet) {
+      delete m_pTextSet;
+      m_pTextSet = NULL;
+    }
+    if (m_pCharWidth) {
+      delete[] m_pCharWidth;
+      m_pCharWidth = NULL;
+    }
+    if (m_pBgnParag) {
+      m_pBgnParag->UnloadParag();
+    }
+    if (m_pEndParag) {
+      m_pEndParag->UnloadParag();
+    }
+    if (m_pIter) {
+      m_pIter->Release();
+      m_pIter = NULL;
+    }
+    m_pBgnParag = NULL;
+    m_pEndParag = NULL;
+  }
+}
+
+const CFX_RectF& CFDE_TxtEdtPage::GetContentsBox() {
+  return m_rtPageContents;
+}
+FX_POSITION CFDE_TxtEdtPage::GetFirstPosition(FDE_HVISUALOBJ hCanvas) {
+  if (m_PieceMassArr.GetSize() < 1) {
+    return NULL;
+  }
+  return (FX_POSITION)1;
+}
+FDE_HVISUALOBJ CFDE_TxtEdtPage::GetNext(FDE_HVISUALOBJ hCanvas,
+                                        FX_POSITION& pos,
+                                        IFDE_VisualSet*& pVisualSet) {
+  if (m_pTextSet == NULL) {
+    pos = NULL;
+    return NULL;
+  }
+  int32_t nPos = (int32_t)(uintptr_t)pos;
+  pVisualSet = m_pTextSet;
+  if (nPos + 1 > m_PieceMassArr.GetSize()) {
+    pos = NULL;
+  } else {
+    pos = (FX_POSITION)(uintptr_t)(nPos + 1);
+  }
+  return (FDE_HVISUALOBJ)(m_PieceMassArr.GetPtrAt(nPos - 1));
+}
+FDE_HVISUALOBJ CFDE_TxtEdtPage::GetParentCanvas(FDE_HVISUALOBJ hCanvas,
+                                                IFDE_VisualSet*& pVisualSet) {
+  return NULL;
+}
+FX_WCHAR CFDE_TxtEdtPage::GetChar(void* pIdentity, int32_t index) const {
+  int32_t nIndex =
+      m_nPageStart + ((FDE_TEXTEDITPIECE*)pIdentity)->nStart + index;
+  if (nIndex != m_pIter->GetAt()) {
+    m_pIter->SetAt(nIndex);
+  }
+  FX_WCHAR wChar = m_pIter->GetChar();
+  m_pIter->Next();
+  return wChar;
+}
+int32_t CFDE_TxtEdtPage::GetWidth(void* pIdentity, int32_t index) const {
+  int32_t nWidth =
+      m_pCharWidth[((FDE_TEXTEDITPIECE*)pIdentity)->nStart + index];
+  return nWidth;
+}
+void CFDE_TxtEdtPage::NormalizePt2Rect(CFX_PointF& ptF,
+                                       const CFX_RectF& rtF,
+                                       FX_FLOAT fTolerance) const {
+  if (rtF.Contains(ptF.x, ptF.y)) {
+    return;
+  }
+  if (ptF.x < rtF.left) {
+    ptF.x = rtF.left;
+  } else if (ptF.x >= rtF.right()) {
+    ptF.x = rtF.right() - fTolerance;
+  }
+  if (ptF.y < rtF.top) {
+    ptF.y = rtF.top;
+  } else if (ptF.y >= rtF.bottom()) {
+    ptF.y = rtF.bottom() - fTolerance;
+  }
+}