Move some classes out of doc_vt.cpp into their own files.

core/fpdfdoc/csection.cpp

Index: core/fpdfdoc/csection.cpp
diff --git a/core/fpdfdoc/csection.cpp b/core/fpdfdoc/csection.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..0cf08fd49bb1c6e6b495f70be0bd061fad6b6eb8
--- /dev/null
+++ b/core/fpdfdoc/csection.cpp
@@ -0,0 +1,290 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "core/fpdfdoc/csection.h"
+
+#include <algorithm>
+
+#include "core/fpdfdoc/cpvt_wordinfo.h"
+
+CSection::CSection(CPDF_VariableText* pVT) : m_pVT(pVT) {}
+
+CSection::~CSection() {
+  ResetAll();
+}
+
+void CSection::ResetAll() {
+  ResetWordArray();
+  ResetLineArray();
+}
+
+void CSection::ResetLineArray() {
+  m_LineArray.RemoveAll();
+}
+
+void CSection::ResetWordArray() {
+  for (int32_t i = 0, sz = m_WordArray.GetSize(); i < sz; i++) {
+    delete m_WordArray.GetAt(i);
+  }
+  m_WordArray.RemoveAll();
+}
+
+void CSection::ResetLinePlace() {
+  for (int32_t i = 0, sz = m_LineArray.GetSize(); i < sz; i++) {
+    if (CLine* pLine = m_LineArray.GetAt(i)) {
+      pLine->LinePlace = CPVT_WordPlace(SecPlace.nSecIndex, i, -1);
+    }
+  }
+}
+
+CPVT_WordPlace CSection::AddWord(const CPVT_WordPlace& place,
+                                 const CPVT_WordInfo& wordinfo) {
+  CPVT_WordInfo* pWord = new CPVT_WordInfo(wordinfo);
+  int32_t nWordIndex =
+      std::max(std::min(place.nWordIndex, m_WordArray.GetSize()), 0);
+  if (nWordIndex == m_WordArray.GetSize()) {
+    m_WordArray.Add(pWord);
+  } else {
+    m_WordArray.InsertAt(nWordIndex, pWord);
+  }
+  return place;
+}
+
+CPVT_WordPlace CSection::AddLine(const CPVT_LineInfo& lineinfo) {
+  return CPVT_WordPlace(SecPlace.nSecIndex, m_LineArray.Add(lineinfo), -1);
+}
+
+CPVT_FloatRect CSection::Rearrange() {
+  if (m_pVT->m_nCharArray > 0) {
+    return CTypeset(this).CharArray();
+  }
+  return CTypeset(this).Typeset();
+}
+
+CFX_SizeF CSection::GetSectionSize(FX_FLOAT fFontSize) {
+  return CTypeset(this).GetEditSize(fFontSize);
+}
+
+CPVT_WordPlace CSection::GetBeginWordPlace() const {
+  if (CLine* pLine = m_LineArray.GetAt(0)) {
+    return pLine->GetBeginWordPlace();
+  }
+  return SecPlace;
+}
+
+CPVT_WordPlace CSection::GetEndWordPlace() const {
+  if (CLine* pLine = m_LineArray.GetAt(m_LineArray.GetSize() - 1)) {
+    return pLine->GetEndWordPlace();
+  }
+  return SecPlace;
+}
+
+CPVT_WordPlace CSection::GetPrevWordPlace(const CPVT_WordPlace& place) const {
+  if (place.nLineIndex < 0) {
+    return GetBeginWordPlace();
+  }
+  if (place.nLineIndex >= m_LineArray.GetSize()) {
+    return GetEndWordPlace();
+  }
+  if (CLine* pLine = m_LineArray.GetAt(place.nLineIndex)) {
+    if (place.nWordIndex == pLine->m_LineInfo.nBeginWordIndex) {
+      return CPVT_WordPlace(place.nSecIndex, place.nLineIndex, -1);
+    }
+    if (place.nWordIndex < pLine->m_LineInfo.nBeginWordIndex) {
+      if (CLine* pPrevLine = m_LineArray.GetAt(place.nLineIndex - 1)) {
+        return pPrevLine->GetEndWordPlace();
+      }
+    } else {
+      return pLine->GetPrevWordPlace(place);
+    }
+  }
+  return place;
+}
+
+CPVT_WordPlace CSection::GetNextWordPlace(const CPVT_WordPlace& place) const {
+  if (place.nLineIndex < 0) {
+    return GetBeginWordPlace();
+  }
+  if (place.nLineIndex >= m_LineArray.GetSize()) {
+    return GetEndWordPlace();
+  }
+  if (CLine* pLine = m_LineArray.GetAt(place.nLineIndex)) {
+    if (place.nWordIndex >= pLine->m_LineInfo.nEndWordIndex) {
+      if (CLine* pNextLine = m_LineArray.GetAt(place.nLineIndex + 1)) {
+        return pNextLine->GetBeginWordPlace();
+      }
+    } else {
+      return pLine->GetNextWordPlace(place);
+    }
+  }
+  return place;
+}
+
+void CSection::UpdateWordPlace(CPVT_WordPlace& place) const {
+  int32_t nLeft = 0;
+  int32_t nRight = m_LineArray.GetSize() - 1;
+  int32_t nMid = (nLeft + nRight) / 2;
+  while (nLeft <= nRight) {
+    if (CLine* pLine = m_LineArray.GetAt(nMid)) {
+      if (place.nWordIndex < pLine->m_LineInfo.nBeginWordIndex) {
+        nRight = nMid - 1;
+        nMid = (nLeft + nRight) / 2;
+      } else if (place.nWordIndex > pLine->m_LineInfo.nEndWordIndex) {
+        nLeft = nMid + 1;
+        nMid = (nLeft + nRight) / 2;
+      } else {
+        place.nLineIndex = nMid;
+        return;
+      }
+    } else {
+      break;
+    }
+  }
+}
+
+CPVT_WordPlace CSection::SearchWordPlace(const CFX_FloatPoint& point) const {
+  ASSERT(m_pVT);
+  CPVT_WordPlace place = GetBeginWordPlace();
+  FX_BOOL bUp = TRUE;
+  FX_BOOL bDown = TRUE;
+  int32_t nLeft = 0;
+  int32_t nRight = m_LineArray.GetSize() - 1;
+  int32_t nMid = m_LineArray.GetSize() / 2;
+  FX_FLOAT fTop = 0;
+  FX_FLOAT fBottom = 0;
+  while (nLeft <= nRight) {
+    if (CLine* pLine = m_LineArray.GetAt(nMid)) {
+      fTop = pLine->m_LineInfo.fLineY - pLine->m_LineInfo.fLineAscent -
+             m_pVT->GetLineLeading(m_SecInfo);
+      fBottom = pLine->m_LineInfo.fLineY - pLine->m_LineInfo.fLineDescent;
+      if (IsFloatBigger(point.y, fTop)) {
+        bUp = FALSE;
+      }
+      if (IsFloatSmaller(point.y, fBottom)) {
+        bDown = FALSE;
+      }
+      if (IsFloatSmaller(point.y, fTop)) {
+        nRight = nMid - 1;
+        nMid = (nLeft + nRight) / 2;
+        continue;
+      } else if (IsFloatBigger(point.y, fBottom)) {
+        nLeft = nMid + 1;
+        nMid = (nLeft + nRight) / 2;
+        continue;
+      } else {
+        place = SearchWordPlace(
+            point.x,
+            CPVT_WordRange(pLine->GetNextWordPlace(pLine->GetBeginWordPlace()),
+                           pLine->GetEndWordPlace()));
+        place.nLineIndex = nMid;
+        return place;
+      }
+    }
+  }
+  if (bUp) {
+    place = GetBeginWordPlace();
+  }
+  if (bDown) {
+    place = GetEndWordPlace();
+  }
+  return place;
+}
+
+CPVT_WordPlace CSection::SearchWordPlace(
+    FX_FLOAT fx,
+    const CPVT_WordPlace& lineplace) const {
+  if (CLine* pLine = m_LineArray.GetAt(lineplace.nLineIndex)) {
+    return SearchWordPlace(
+        fx - m_SecInfo.rcSection.left,
+        CPVT_WordRange(pLine->GetNextWordPlace(pLine->GetBeginWordPlace()),
+                       pLine->GetEndWordPlace()));
+  }
+  return GetBeginWordPlace();
+}
+
+CPVT_WordPlace CSection::SearchWordPlace(FX_FLOAT fx,
+                                         const CPVT_WordRange& range) const {
+  CPVT_WordPlace wordplace = range.BeginPos;
+  wordplace.nWordIndex = -1;
+  if (!m_pVT) {
+    return wordplace;
+  }
+  int32_t nLeft = range.BeginPos.nWordIndex;
+  int32_t nRight = range.EndPos.nWordIndex + 1;
+  int32_t nMid = (nLeft + nRight) / 2;
+  while (nLeft < nRight) {
+    if (nMid == nLeft) {
+      break;
+    }
+    if (nMid == nRight) {
+      nMid--;
+      break;
+    }
+    if (CPVT_WordInfo* pWord = m_WordArray.GetAt(nMid)) {
+      if (fx >
+          pWord->fWordX + m_pVT->GetWordWidth(*pWord) * VARIABLETEXT_HALF) {
+        nLeft = nMid;
+        nMid = (nLeft + nRight) / 2;
+        continue;
+      } else {
+        nRight = nMid;
+        nMid = (nLeft + nRight) / 2;
+        continue;
+      }
+    } else {
+      break;
+    }
+  }
+  if (CPVT_WordInfo* pWord = m_WordArray.GetAt(nMid)) {
+    if (fx > pWord->fWordX + m_pVT->GetWordWidth(*pWord) * VARIABLETEXT_HALF) {
+      wordplace.nWordIndex = nMid;
+    }
+  }
+  return wordplace;
+}
+
+void CSection::ClearLeftWords(int32_t nWordIndex) {
+  for (int32_t i = nWordIndex; i >= 0; i--) {
+    delete m_WordArray.GetAt(i);
+    m_WordArray.RemoveAt(i);
+  }
+}
+
+void CSection::ClearRightWords(int32_t nWordIndex) {
+  for (int32_t i = m_WordArray.GetSize() - 1; i > nWordIndex; i--) {
+    delete m_WordArray.GetAt(i);
+    m_WordArray.RemoveAt(i);
+  }
+}
+
+void CSection::ClearMidWords(int32_t nBeginIndex, int32_t nEndIndex) {
+  for (int32_t i = nEndIndex; i > nBeginIndex; i--) {
+    delete m_WordArray.GetAt(i);
+    m_WordArray.RemoveAt(i);
+  }
+}
+
+void CSection::ClearWords(const CPVT_WordRange& PlaceRange) {
+  CPVT_WordPlace SecBeginPos = GetBeginWordPlace();
+  CPVT_WordPlace SecEndPos = GetEndWordPlace();
+  if (PlaceRange.BeginPos.WordCmp(SecBeginPos) >= 0) {
+    if (PlaceRange.EndPos.WordCmp(SecEndPos) <= 0) {
+      ClearMidWords(PlaceRange.BeginPos.nWordIndex,
+                    PlaceRange.EndPos.nWordIndex);
+    } else {
+      ClearRightWords(PlaceRange.BeginPos.nWordIndex);
+    }
+  } else if (PlaceRange.EndPos.WordCmp(SecEndPos) <= 0) {
+    ClearLeftWords(PlaceRange.EndPos.nWordIndex);
+  } else {
+    ResetWordArray();
+  }
+}
+
+void CSection::ClearWord(const CPVT_WordPlace& place) {
+  delete m_WordArray.GetAt(place.nWordIndex);
+  m_WordArray.RemoveAt(place.nWordIndex);
+}