Home | History | Annotate | Download | only in fpdfdoc 
      1 // Copyright 2016 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #include "core/fpdfdoc/cpdf_variabletext.h"
      8 
      9 #include <algorithm>
     10 
     11 #include "core/fpdfapi/font/cpdf_font.h"
     12 #include "core/fpdfdoc/cline.h"
     13 #include "core/fpdfdoc/cpvt_section.h"
     14 #include "core/fpdfdoc/cpvt_word.h"
     15 #include "core/fpdfdoc/cpvt_wordinfo.h"
     16 #include "core/fpdfdoc/csection.h"
     17 #include "core/fpdfdoc/ipvt_fontmap.h"
     18 #include "third_party/base/ptr_util.h"
     19 
     20 namespace {
     21 
     22 const float kFontScale = 0.001f;
     23 const uint8_t kReturnLength = 1;
     24 const float kScalePercent = 0.01f;
     25 
     26 const uint8_t gFontSizeSteps[] = {4,  6,  8,   9,   10,  12,  14, 18, 20,
     27                                   25, 30, 35,  40,  45,  50,  55, 60, 70,
     28                                   80, 90, 100, 110, 120, 130, 144};
     29 
     30 }  // namespace
     31 
     32 CPDF_VariableText::Provider::Provider(IPVT_FontMap* pFontMap)
     33     : m_pFontMap(pFontMap) {
     34   ASSERT(m_pFontMap);
     35 }
     36 
     37 CPDF_VariableText::Provider::~Provider() {}
     38 
     39 int32_t CPDF_VariableText::Provider::GetCharWidth(int32_t nFontIndex,
     40                                                   uint16_t word) {
     41   if (CPDF_Font* pPDFFont = m_pFontMap->GetPDFFont(nFontIndex)) {
     42     uint32_t charcode = pPDFFont->CharCodeFromUnicode(word);
     43     if (charcode != CPDF_Font::kInvalidCharCode)
     44       return pPDFFont->GetCharWidthF(charcode);
     45   }
     46   return 0;
     47 }
     48 
     49 int32_t CPDF_VariableText::Provider::GetTypeAscent(int32_t nFontIndex) {
     50   if (CPDF_Font* pPDFFont = m_pFontMap->GetPDFFont(nFontIndex))
     51     return pPDFFont->GetTypeAscent();
     52   return 0;
     53 }
     54 
     55 int32_t CPDF_VariableText::Provider::GetTypeDescent(int32_t nFontIndex) {
     56   if (CPDF_Font* pPDFFont = m_pFontMap->GetPDFFont(nFontIndex))
     57     return pPDFFont->GetTypeDescent();
     58   return 0;
     59 }
     60 
     61 int32_t CPDF_VariableText::Provider::GetWordFontIndex(uint16_t word,
     62                                                       int32_t charset,
     63                                                       int32_t nFontIndex) {
     64   if (CPDF_Font* pDefFont = m_pFontMap->GetPDFFont(0)) {
     65     if (pDefFont->CharCodeFromUnicode(word) != CPDF_Font::kInvalidCharCode)
     66       return 0;
     67   }
     68   if (CPDF_Font* pSysFont = m_pFontMap->GetPDFFont(1)) {
     69     if (pSysFont->CharCodeFromUnicode(word) != CPDF_Font::kInvalidCharCode)
     70       return 1;
     71   }
     72   return -1;
     73 }
     74 
     75 bool CPDF_VariableText::Provider::IsLatinWord(uint16_t word) {
     76   return (word >= 0x61 && word <= 0x7A) || (word >= 0x41 && word <= 0x5A) ||
     77          word == 0x2D || word == 0x27;
     78 }
     79 
     80 int32_t CPDF_VariableText::Provider::GetDefaultFontIndex() {
     81   return 0;
     82 }
     83 
     84 CPDF_VariableText::Iterator::Iterator(CPDF_VariableText* pVT)
     85     : m_CurPos(-1, -1, -1), m_pVT(pVT) {}
     86 
     87 CPDF_VariableText::Iterator::~Iterator() {}
     88 
     89 void CPDF_VariableText::Iterator::SetAt(int32_t nWordIndex) {
     90   m_CurPos = m_pVT->WordIndexToWordPlace(nWordIndex);
     91 }
     92 
     93 void CPDF_VariableText::Iterator::SetAt(const CPVT_WordPlace& place) {
     94   ASSERT(m_pVT);
     95   m_CurPos = place;
     96 }
     97 
     98 bool CPDF_VariableText::Iterator::NextWord() {
     99   if (m_CurPos == m_pVT->GetEndWordPlace())
    100     return false;
    101 
    102   m_CurPos = m_pVT->GetNextWordPlace(m_CurPos);
    103   return true;
    104 }
    105 
    106 bool CPDF_VariableText::Iterator::PrevWord() {
    107   if (m_CurPos == m_pVT->GetBeginWordPlace())
    108     return false;
    109 
    110   m_CurPos = m_pVT->GetPrevWordPlace(m_CurPos);
    111   return true;
    112 }
    113 
    114 bool CPDF_VariableText::Iterator::NextLine() {
    115   if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
    116     if (m_CurPos.nLineIndex < pSection->m_LineArray.GetSize() - 1) {
    117       m_CurPos =
    118           CPVT_WordPlace(m_CurPos.nSecIndex, m_CurPos.nLineIndex + 1, -1);
    119       return true;
    120     }
    121     if (m_CurPos.nSecIndex < m_pVT->m_SectionArray.GetSize() - 1) {
    122       m_CurPos = CPVT_WordPlace(m_CurPos.nSecIndex + 1, 0, -1);
    123       return true;
    124     }
    125   }
    126   return false;
    127 }
    128 
    129 bool CPDF_VariableText::Iterator::PrevLine() {
    130   if (m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
    131     if (m_CurPos.nLineIndex > 0) {
    132       m_CurPos =
    133           CPVT_WordPlace(m_CurPos.nSecIndex, m_CurPos.nLineIndex - 1, -1);
    134       return true;
    135     }
    136     if (m_CurPos.nSecIndex > 0) {
    137       if (CSection* pLastSection =
    138               m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex - 1)) {
    139         m_CurPos = CPVT_WordPlace(m_CurPos.nSecIndex - 1,
    140                                   pLastSection->m_LineArray.GetSize() - 1, -1);
    141         return true;
    142       }
    143     }
    144   }
    145   return false;
    146 }
    147 
    148 bool CPDF_VariableText::Iterator::NextSection() {
    149   if (m_CurPos.nSecIndex < m_pVT->m_SectionArray.GetSize() - 1) {
    150     m_CurPos = CPVT_WordPlace(m_CurPos.nSecIndex + 1, 0, -1);
    151     return true;
    152   }
    153   return false;
    154 }
    155 
    156 bool CPDF_VariableText::Iterator::PrevSection() {
    157   ASSERT(m_pVT);
    158   if (m_CurPos.nSecIndex > 0) {
    159     m_CurPos = CPVT_WordPlace(m_CurPos.nSecIndex - 1, 0, -1);
    160     return true;
    161   }
    162   return false;
    163 }
    164 
    165 bool CPDF_VariableText::Iterator::GetWord(CPVT_Word& word) const {
    166   word.WordPlace = m_CurPos;
    167   if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
    168     if (pSection->m_LineArray.GetAt(m_CurPos.nLineIndex)) {
    169       if (CPVT_WordInfo* pWord =
    170               pSection->m_WordArray.GetAt(m_CurPos.nWordIndex)) {
    171         word.Word = pWord->Word;
    172         word.nCharset = pWord->nCharset;
    173         word.fWidth = m_pVT->GetWordWidth(*pWord);
    174         word.ptWord = m_pVT->InToOut(
    175             CFX_PointF(pWord->fWordX + pSection->m_SecInfo.rcSection.left,
    176                        pWord->fWordY + pSection->m_SecInfo.rcSection.top));
    177         word.fAscent = m_pVT->GetWordAscent(*pWord);
    178         word.fDescent = m_pVT->GetWordDescent(*pWord);
    179         if (pWord->pWordProps)
    180           word.WordProps = *pWord->pWordProps;
    181 
    182         word.nFontIndex = m_pVT->GetWordFontIndex(*pWord);
    183         word.fFontSize = m_pVT->GetWordFontSize(*pWord);
    184         return true;
    185       }
    186     }
    187   }
    188   return false;
    189 }
    190 
    191 bool CPDF_VariableText::Iterator::SetWord(const CPVT_Word& word) {
    192   if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
    193     if (CPVT_WordInfo* pWord =
    194             pSection->m_WordArray.GetAt(m_CurPos.nWordIndex)) {
    195       if (pWord->pWordProps)
    196         *pWord->pWordProps = word.WordProps;
    197       return true;
    198     }
    199   }
    200   return false;
    201 }
    202 
    203 bool CPDF_VariableText::Iterator::GetLine(CPVT_Line& line) const {
    204   ASSERT(m_pVT);
    205   line.lineplace = CPVT_WordPlace(m_CurPos.nSecIndex, m_CurPos.nLineIndex, -1);
    206   if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
    207     if (CLine* pLine = pSection->m_LineArray.GetAt(m_CurPos.nLineIndex)) {
    208       line.ptLine = m_pVT->InToOut(CFX_PointF(
    209           pLine->m_LineInfo.fLineX + pSection->m_SecInfo.rcSection.left,
    210           pLine->m_LineInfo.fLineY + pSection->m_SecInfo.rcSection.top));
    211       line.fLineWidth = pLine->m_LineInfo.fLineWidth;
    212       line.fLineAscent = pLine->m_LineInfo.fLineAscent;
    213       line.fLineDescent = pLine->m_LineInfo.fLineDescent;
    214       line.lineEnd = pLine->GetEndWordPlace();
    215       return true;
    216     }
    217   }
    218   return false;
    219 }
    220 
    221 bool CPDF_VariableText::Iterator::GetSection(CPVT_Section& section) const {
    222   section.secplace = CPVT_WordPlace(m_CurPos.nSecIndex, 0, -1);
    223   if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
    224     section.rcSection = m_pVT->InToOut(pSection->m_SecInfo.rcSection);
    225     if (pSection->m_SecInfo.pSecProps)
    226       section.SecProps = *pSection->m_SecInfo.pSecProps;
    227     if (pSection->m_SecInfo.pWordProps)
    228       section.WordProps = *pSection->m_SecInfo.pWordProps;
    229     return true;
    230   }
    231   return false;
    232 }
    233 
    234 bool CPDF_VariableText::Iterator::SetSection(const CPVT_Section& section) {
    235   if (CSection* pSection = m_pVT->m_SectionArray.GetAt(m_CurPos.nSecIndex)) {
    236     if (pSection->m_SecInfo.pSecProps)
    237       *pSection->m_SecInfo.pSecProps = section.SecProps;
    238     if (pSection->m_SecInfo.pWordProps)
    239       *pSection->m_SecInfo.pWordProps = section.WordProps;
    240     return true;
    241   }
    242   return false;
    243 }
    244 
    245 CPDF_VariableText::CPDF_VariableText()
    246     : m_nLimitChar(0),
    247       m_nCharArray(0),
    248       m_bMultiLine(false),
    249       m_bLimitWidth(false),
    250       m_bAutoFontSize(false),
    251       m_nAlignment(0),
    252       m_fLineLeading(0.0f),
    253       m_fCharSpace(0.0f),
    254       m_nHorzScale(100),
    255       m_wSubWord(0),
    256       m_fFontSize(0.0f),
    257       m_bInitial(false),
    258       m_pVTProvider(nullptr) {}
    259 
    260 CPDF_VariableText::~CPDF_VariableText() {
    261   ResetAll();
    262 }
    263 
    264 void CPDF_VariableText::Initialize() {
    265   if (!m_bInitial) {
    266     CPVT_SectionInfo secinfo;
    267     CPVT_WordPlace place;
    268     place.nSecIndex = 0;
    269     AddSection(place, secinfo);
    270     CPVT_LineInfo lineinfo;
    271     lineinfo.fLineAscent = GetFontAscent(GetDefaultFontIndex(), GetFontSize());
    272     lineinfo.fLineDescent =
    273         GetFontDescent(GetDefaultFontIndex(), GetFontSize());
    274     AddLine(place, lineinfo);
    275     if (CSection* pSection = m_SectionArray.GetAt(0))
    276       pSection->ResetLinePlace();
    277 
    278     m_bInitial = true;
    279   }
    280 }
    281 
    282 void CPDF_VariableText::ResetAll() {
    283   m_bInitial = false;
    284   ResetSectionArray();
    285 }
    286 
    287 CPVT_WordPlace CPDF_VariableText::InsertWord(const CPVT_WordPlace& place,
    288                                              uint16_t word,
    289                                              int32_t charset,
    290                                              const CPVT_WordProps* pWordProps) {
    291   int32_t nTotlaWords = GetTotalWords();
    292   if (m_nLimitChar > 0 && nTotlaWords >= m_nLimitChar)
    293     return place;
    294   if (m_nCharArray > 0 && nTotlaWords >= m_nCharArray)
    295     return place;
    296 
    297   CPVT_WordPlace newplace = place;
    298   newplace.nWordIndex++;
    299   int32_t nFontIndex =
    300       GetSubWord() > 0 ? GetDefaultFontIndex()
    301                        : GetWordFontIndex(word, charset, GetDefaultFontIndex());
    302   return AddWord(newplace, CPVT_WordInfo(word, charset, nFontIndex, nullptr));
    303 }
    304 
    305 CPVT_WordPlace CPDF_VariableText::InsertSection(
    306     const CPVT_WordPlace& place,
    307     const CPVT_SecProps* pSecProps,
    308     const CPVT_WordProps* pWordProps) {
    309   int32_t nTotlaWords = GetTotalWords();
    310   if (m_nLimitChar > 0 && nTotlaWords >= m_nLimitChar)
    311     return place;
    312   if (m_nCharArray > 0 && nTotlaWords >= m_nCharArray)
    313     return place;
    314   if (!m_bMultiLine)
    315     return place;
    316 
    317   CPVT_WordPlace wordplace = place;
    318   UpdateWordPlace(wordplace);
    319   CPVT_WordPlace newplace = place;
    320   if (CSection* pSection = m_SectionArray.GetAt(wordplace.nSecIndex)) {
    321     CPVT_WordPlace NewPlace(wordplace.nSecIndex + 1, 0, -1);
    322     CPVT_SectionInfo secinfo;
    323     AddSection(NewPlace, secinfo);
    324     newplace = NewPlace;
    325     if (CSection* pNewSection = m_SectionArray.GetAt(NewPlace.nSecIndex)) {
    326       for (int32_t w = wordplace.nWordIndex + 1,
    327                    sz = pSection->m_WordArray.GetSize();
    328            w < sz; w++) {
    329         if (CPVT_WordInfo* pWord = pSection->m_WordArray.GetAt(w)) {
    330           NewPlace.nWordIndex++;
    331           pNewSection->AddWord(NewPlace, *pWord);
    332         }
    333       }
    334     }
    335     ClearSectionRightWords(wordplace);
    336   }
    337   return newplace;
    338 }
    339 
    340 CPVT_WordPlace CPDF_VariableText::InsertText(const CPVT_WordPlace& place,
    341                                              const FX_WCHAR* text) {
    342   CFX_WideString swText = text;
    343   CPVT_WordPlace wp = place;
    344   for (int32_t i = 0, sz = swText.GetLength(); i < sz; i++) {
    345     CPVT_WordPlace oldwp = wp;
    346     uint16_t word = swText.GetAt(i);
    347     switch (word) {
    348       case 0x0D:
    349         if (m_bMultiLine) {
    350           if (swText.GetAt(i + 1) == 0x0A)
    351             i += 1;
    352 
    353           wp = InsertSection(wp, nullptr, nullptr);
    354         }
    355         break;
    356       case 0x0A:
    357         if (m_bMultiLine) {
    358           if (swText.GetAt(i + 1) == 0x0D)
    359             i += 1;
    360 
    361           wp = InsertSection(wp, nullptr, nullptr);
    362         }
    363         break;
    364       case 0x09:
    365         word = 0x20;
    366       default:
    367         wp = InsertWord(wp, word, FXFONT_DEFAULT_CHARSET, nullptr);
    368         break;
    369     }
    370     if (wp == oldwp)
    371       break;
    372   }
    373   return wp;
    374 }
    375 
    376 CPVT_WordPlace CPDF_VariableText::DeleteWords(
    377     const CPVT_WordRange& PlaceRange) {
    378   bool bLastSecPos = false;
    379   if (CSection* pSection = m_SectionArray.GetAt(PlaceRange.EndPos.nSecIndex))
    380     bLastSecPos = (PlaceRange.EndPos == pSection->GetEndWordPlace());
    381 
    382   ClearWords(PlaceRange);
    383   if (PlaceRange.BeginPos.nSecIndex != PlaceRange.EndPos.nSecIndex) {
    384     ClearEmptySections(PlaceRange);
    385     if (!bLastSecPos)
    386       LinkLatterSection(PlaceRange.BeginPos);
    387   }
    388   return PlaceRange.BeginPos;
    389 }
    390 
    391 CPVT_WordPlace CPDF_VariableText::DeleteWord(const CPVT_WordPlace& place) {
    392   return ClearRightWord(AdjustLineHeader(place, true));
    393 }
    394 
    395 CPVT_WordPlace CPDF_VariableText::BackSpaceWord(const CPVT_WordPlace& place) {
    396   return ClearLeftWord(AdjustLineHeader(place, true));
    397 }
    398 
    399 void CPDF_VariableText::SetText(const CFX_WideString& swText) {
    400   DeleteWords(CPVT_WordRange(GetBeginWordPlace(), GetEndWordPlace()));
    401   CPVT_WordPlace wp(0, 0, -1);
    402   CPVT_SectionInfo secinfo;
    403   if (CSection* pSection = m_SectionArray.GetAt(0))
    404     pSection->m_SecInfo = secinfo;
    405 
    406   int32_t nCharCount = 0;
    407   for (int32_t i = 0, sz = swText.GetLength(); i < sz; i++) {
    408     if (m_nLimitChar > 0 && nCharCount >= m_nLimitChar)
    409       break;
    410     if (m_nCharArray > 0 && nCharCount >= m_nCharArray)
    411       break;
    412 
    413     uint16_t word = swText.GetAt(i);
    414     switch (word) {
    415       case 0x0D:
    416         if (m_bMultiLine) {
    417           if (swText.GetAt(i + 1) == 0x0A)
    418             i += 1;
    419 
    420           wp.nSecIndex++;
    421           wp.nLineIndex = 0;
    422           wp.nWordIndex = -1;
    423           AddSection(wp, secinfo);
    424         }
    425         break;
    426       case 0x0A:
    427         if (m_bMultiLine) {
    428           if (swText.GetAt(i + 1) == 0x0D)
    429             i += 1;
    430 
    431           wp.nSecIndex++;
    432           wp.nLineIndex = 0;
    433           wp.nWordIndex = -1;
    434           AddSection(wp, secinfo);
    435         }
    436         break;
    437       case 0x09:
    438         word = 0x20;
    439       default:
    440         wp = InsertWord(wp, word, FXFONT_DEFAULT_CHARSET, nullptr);
    441         break;
    442     }
    443     nCharCount++;
    444   }
    445 }
    446 
    447 void CPDF_VariableText::UpdateWordPlace(CPVT_WordPlace& place) const {
    448   if (place.nSecIndex < 0)
    449     place = GetBeginWordPlace();
    450   if (place.nSecIndex >= m_SectionArray.GetSize())
    451     place = GetEndWordPlace();
    452 
    453   place = AdjustLineHeader(place, true);
    454   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex))
    455     pSection->UpdateWordPlace(place);
    456 }
    457 
    458 int32_t CPDF_VariableText::WordPlaceToWordIndex(
    459     const CPVT_WordPlace& place) const {
    460   CPVT_WordPlace newplace = place;
    461   UpdateWordPlace(newplace);
    462   int32_t nIndex = 0;
    463   int32_t i = 0;
    464   int32_t sz = 0;
    465   for (i = 0, sz = m_SectionArray.GetSize(); i < sz && i < newplace.nSecIndex;
    466        i++) {
    467     if (CSection* pSection = m_SectionArray.GetAt(i)) {
    468       nIndex += pSection->m_WordArray.GetSize();
    469       if (i != m_SectionArray.GetSize() - 1)
    470         nIndex += kReturnLength;
    471     }
    472   }
    473   if (i >= 0 && i < m_SectionArray.GetSize())
    474     nIndex += newplace.nWordIndex + kReturnLength;
    475   return nIndex;
    476 }
    477 
    478 CPVT_WordPlace CPDF_VariableText::WordIndexToWordPlace(int32_t index) const {
    479   CPVT_WordPlace place = GetBeginWordPlace();
    480   int32_t nOldIndex = 0, nIndex = 0;
    481   bool bFind = false;
    482   for (int32_t i = 0, sz = m_SectionArray.GetSize(); i < sz; i++) {
    483     if (CSection* pSection = m_SectionArray.GetAt(i)) {
    484       nIndex += pSection->m_WordArray.GetSize();
    485       if (nIndex == index) {
    486         place = pSection->GetEndWordPlace();
    487         bFind = true;
    488         break;
    489       } else if (nIndex > index) {
    490         place.nSecIndex = i;
    491         place.nWordIndex = index - nOldIndex - 1;
    492         pSection->UpdateWordPlace(place);
    493         bFind = true;
    494         break;
    495       }
    496       if (i != m_SectionArray.GetSize() - 1)
    497         nIndex += kReturnLength;
    498       nOldIndex = nIndex;
    499     }
    500   }
    501   if (!bFind)
    502     place = GetEndWordPlace();
    503   return place;
    504 }
    505 
    506 CPVT_WordPlace CPDF_VariableText::GetBeginWordPlace() const {
    507   return m_bInitial ? CPVT_WordPlace(0, 0, -1) : CPVT_WordPlace();
    508 }
    509 
    510 CPVT_WordPlace CPDF_VariableText::GetEndWordPlace() const {
    511   if (CSection* pSection = m_SectionArray.GetAt(m_SectionArray.GetSize() - 1))
    512     return pSection->GetEndWordPlace();
    513   return CPVT_WordPlace();
    514 }
    515 
    516 CPVT_WordPlace CPDF_VariableText::GetPrevWordPlace(
    517     const CPVT_WordPlace& place) const {
    518   if (place.nSecIndex < 0)
    519     return GetBeginWordPlace();
    520   if (place.nSecIndex >= m_SectionArray.GetSize())
    521     return GetEndWordPlace();
    522   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    523     if (place.WordCmp(pSection->GetBeginWordPlace()) <= 0) {
    524       if (CSection* pPrevSection = m_SectionArray.GetAt(place.nSecIndex - 1))
    525         return pPrevSection->GetEndWordPlace();
    526       return GetBeginWordPlace();
    527     }
    528     return pSection->GetPrevWordPlace(place);
    529   }
    530   return place;
    531 }
    532 
    533 CPVT_WordPlace CPDF_VariableText::GetNextWordPlace(
    534     const CPVT_WordPlace& place) const {
    535   if (place.nSecIndex < 0)
    536     return GetBeginWordPlace();
    537   if (place.nSecIndex >= m_SectionArray.GetSize())
    538     return GetEndWordPlace();
    539   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    540     if (place.WordCmp(pSection->GetEndWordPlace()) >= 0) {
    541       if (CSection* pNextSection = m_SectionArray.GetAt(place.nSecIndex + 1))
    542         return pNextSection->GetBeginWordPlace();
    543       return GetEndWordPlace();
    544     }
    545     return pSection->GetNextWordPlace(place);
    546   }
    547   return place;
    548 }
    549 
    550 CPVT_WordPlace CPDF_VariableText::SearchWordPlace(
    551     const CFX_PointF& point) const {
    552   CFX_PointF pt = OutToIn(point);
    553   CPVT_WordPlace place = GetBeginWordPlace();
    554   int32_t nLeft = 0;
    555   int32_t nRight = m_SectionArray.GetSize() - 1;
    556   int32_t nMid = m_SectionArray.GetSize() / 2;
    557   bool bUp = true;
    558   bool bDown = true;
    559   while (nLeft <= nRight) {
    560     if (CSection* pSection = m_SectionArray.GetAt(nMid)) {
    561       if (IsFloatBigger(pt.y, pSection->m_SecInfo.rcSection.top)) {
    562         bUp = false;
    563       }
    564       if (IsFloatBigger(pSection->m_SecInfo.rcSection.bottom, pt.y)) {
    565         bDown = false;
    566       }
    567       if (IsFloatSmaller(pt.y, pSection->m_SecInfo.rcSection.top)) {
    568         nRight = nMid - 1;
    569         nMid = (nLeft + nRight) / 2;
    570         continue;
    571       } else if (IsFloatBigger(pt.y, pSection->m_SecInfo.rcSection.bottom)) {
    572         nLeft = nMid + 1;
    573         nMid = (nLeft + nRight) / 2;
    574         continue;
    575       } else {
    576         place = pSection->SearchWordPlace(
    577             CFX_PointF(pt.x - pSection->m_SecInfo.rcSection.left,
    578                        pt.y - pSection->m_SecInfo.rcSection.top));
    579         place.nSecIndex = nMid;
    580         return place;
    581       }
    582     } else {
    583       break;
    584     }
    585   }
    586   if (bUp)
    587     place = GetBeginWordPlace();
    588   if (bDown)
    589     place = GetEndWordPlace();
    590   return place;
    591 }
    592 
    593 CPVT_WordPlace CPDF_VariableText::GetUpWordPlace(
    594     const CPVT_WordPlace& place,
    595     const CFX_PointF& point) const {
    596   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    597     CPVT_WordPlace temp = place;
    598     CFX_PointF pt = OutToIn(point);
    599     if (temp.nLineIndex-- > 0) {
    600       return pSection->SearchWordPlace(
    601           pt.x - pSection->m_SecInfo.rcSection.left, temp);
    602     }
    603     if (temp.nSecIndex-- > 0) {
    604       if (CSection* pLastSection = m_SectionArray.GetAt(temp.nSecIndex)) {
    605         temp.nLineIndex = pLastSection->m_LineArray.GetSize() - 1;
    606         return pLastSection->SearchWordPlace(
    607             pt.x - pLastSection->m_SecInfo.rcSection.left, temp);
    608       }
    609     }
    610   }
    611   return place;
    612 }
    613 
    614 CPVT_WordPlace CPDF_VariableText::GetDownWordPlace(
    615     const CPVT_WordPlace& place,
    616     const CFX_PointF& point) const {
    617   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    618     CPVT_WordPlace temp = place;
    619     CFX_PointF pt = OutToIn(point);
    620     if (temp.nLineIndex++ < pSection->m_LineArray.GetSize() - 1) {
    621       return pSection->SearchWordPlace(
    622           pt.x - pSection->m_SecInfo.rcSection.left, temp);
    623     }
    624     if (temp.nSecIndex++ < m_SectionArray.GetSize() - 1) {
    625       if (CSection* pNextSection = m_SectionArray.GetAt(temp.nSecIndex)) {
    626         temp.nLineIndex = 0;
    627         return pNextSection->SearchWordPlace(
    628             pt.x - pSection->m_SecInfo.rcSection.left, temp);
    629       }
    630     }
    631   }
    632   return place;
    633 }
    634 
    635 CPVT_WordPlace CPDF_VariableText::GetLineBeginPlace(
    636     const CPVT_WordPlace& place) const {
    637   return CPVT_WordPlace(place.nSecIndex, place.nLineIndex, -1);
    638 }
    639 
    640 CPVT_WordPlace CPDF_VariableText::GetLineEndPlace(
    641     const CPVT_WordPlace& place) const {
    642   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    643     if (CLine* pLine = pSection->m_LineArray.GetAt(place.nLineIndex))
    644       return pLine->GetEndWordPlace();
    645   }
    646   return place;
    647 }
    648 
    649 CPVT_WordPlace CPDF_VariableText::GetSectionBeginPlace(
    650     const CPVT_WordPlace& place) const {
    651   return CPVT_WordPlace(place.nSecIndex, 0, -1);
    652 }
    653 
    654 CPVT_WordPlace CPDF_VariableText::GetSectionEndPlace(
    655     const CPVT_WordPlace& place) const {
    656   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex))
    657     return pSection->GetEndWordPlace();
    658   return place;
    659 }
    660 
    661 int32_t CPDF_VariableText::GetTotalWords() const {
    662   int32_t nTotal = 0;
    663   for (int32_t i = 0, sz = m_SectionArray.GetSize(); i < sz; i++) {
    664     if (CSection* pSection = m_SectionArray.GetAt(i))
    665       nTotal += (pSection->m_WordArray.GetSize() + kReturnLength);
    666   }
    667 
    668   return nTotal - kReturnLength;
    669 }
    670 
    671 void CPDF_VariableText::ResetSectionArray() {
    672   for (int32_t s = 0, sz = m_SectionArray.GetSize(); s < sz; s++)
    673     delete m_SectionArray.GetAt(s);
    674 
    675   m_SectionArray.RemoveAll();
    676 }
    677 
    678 CPVT_WordPlace CPDF_VariableText::AddSection(const CPVT_WordPlace& place,
    679                                              const CPVT_SectionInfo& secinfo) {
    680   if (IsValid() && !m_bMultiLine)
    681     return place;
    682 
    683   int32_t nSecIndex =
    684       std::max(std::min(place.nSecIndex, m_SectionArray.GetSize()), 0);
    685   CSection* pSection = new CSection(this);
    686   pSection->m_SecInfo = secinfo;
    687   pSection->SecPlace.nSecIndex = nSecIndex;
    688   if (nSecIndex == m_SectionArray.GetSize())
    689     m_SectionArray.Add(pSection);
    690   else
    691     m_SectionArray.InsertAt(nSecIndex, pSection);
    692 
    693   return place;
    694 }
    695 
    696 CPVT_WordPlace CPDF_VariableText::AddLine(const CPVT_WordPlace& place,
    697                                           const CPVT_LineInfo& lineinfo) {
    698   if (m_SectionArray.IsEmpty())
    699     return place;
    700   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex))
    701     return pSection->AddLine(lineinfo);
    702   return place;
    703 }
    704 
    705 CPVT_WordPlace CPDF_VariableText::AddWord(const CPVT_WordPlace& place,
    706                                           const CPVT_WordInfo& wordinfo) {
    707   if (m_SectionArray.GetSize() <= 0) {
    708     return place;
    709   }
    710   CPVT_WordPlace newplace = place;
    711   newplace.nSecIndex =
    712       std::max(std::min(newplace.nSecIndex, m_SectionArray.GetSize() - 1), 0);
    713   if (CSection* pSection = m_SectionArray.GetAt(newplace.nSecIndex))
    714     return pSection->AddWord(newplace, wordinfo);
    715   return place;
    716 }
    717 
    718 bool CPDF_VariableText::GetWordInfo(const CPVT_WordPlace& place,
    719                                     CPVT_WordInfo& wordinfo) {
    720   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    721     if (CPVT_WordInfo* pWord = pSection->m_WordArray.GetAt(place.nWordIndex)) {
    722       wordinfo = *pWord;
    723       return true;
    724     }
    725   }
    726   return false;
    727 }
    728 
    729 bool CPDF_VariableText::SetWordInfo(const CPVT_WordPlace& place,
    730                                     const CPVT_WordInfo& wordinfo) {
    731   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    732     if (CPVT_WordInfo* pWord = pSection->m_WordArray.GetAt(place.nWordIndex)) {
    733       *pWord = wordinfo;
    734       return true;
    735     }
    736   }
    737   return false;
    738 }
    739 
    740 bool CPDF_VariableText::GetLineInfo(const CPVT_WordPlace& place,
    741                                     CPVT_LineInfo& lineinfo) {
    742   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    743     if (CLine* pLine = pSection->m_LineArray.GetAt(place.nLineIndex)) {
    744       lineinfo = pLine->m_LineInfo;
    745       return true;
    746     }
    747   }
    748   return false;
    749 }
    750 
    751 bool CPDF_VariableText::GetSectionInfo(const CPVT_WordPlace& place,
    752                                        CPVT_SectionInfo& secinfo) {
    753   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    754     secinfo = pSection->m_SecInfo;
    755     return true;
    756   }
    757   return false;
    758 }
    759 
    760 void CPDF_VariableText::SetPlateRect(const CFX_FloatRect& rect) {
    761   m_rcPlate = rect;
    762 }
    763 
    764 void CPDF_VariableText::SetContentRect(const CPVT_FloatRect& rect) {
    765   m_rcContent = rect;
    766 }
    767 
    768 CFX_FloatRect CPDF_VariableText::GetContentRect() const {
    769   return InToOut(CPVT_FloatRect(m_rcContent));
    770 }
    771 
    772 const CFX_FloatRect& CPDF_VariableText::GetPlateRect() const {
    773   return m_rcPlate;
    774 }
    775 
    776 FX_FLOAT CPDF_VariableText::GetWordFontSize(const CPVT_WordInfo& WordInfo) {
    777   return GetFontSize();
    778 }
    779 
    780 int32_t CPDF_VariableText::GetWordFontIndex(const CPVT_WordInfo& WordInfo) {
    781   return WordInfo.nFontIndex;
    782 }
    783 
    784 FX_FLOAT CPDF_VariableText::GetWordWidth(int32_t nFontIndex,
    785                                          uint16_t Word,
    786                                          uint16_t SubWord,
    787                                          FX_FLOAT fCharSpace,
    788                                          int32_t nHorzScale,
    789                                          FX_FLOAT fFontSize,
    790                                          FX_FLOAT fWordTail) {
    791   return (GetCharWidth(nFontIndex, Word, SubWord) * fFontSize * kFontScale +
    792           fCharSpace) *
    793              nHorzScale * kScalePercent +
    794          fWordTail;
    795 }
    796 
    797 FX_FLOAT CPDF_VariableText::GetWordWidth(const CPVT_WordInfo& WordInfo) {
    798   return GetWordWidth(GetWordFontIndex(WordInfo), WordInfo.Word, GetSubWord(),
    799                       GetCharSpace(WordInfo), GetHorzScale(WordInfo),
    800                       GetWordFontSize(WordInfo), WordInfo.fWordTail);
    801 }
    802 
    803 FX_FLOAT CPDF_VariableText::GetLineAscent(const CPVT_SectionInfo& SecInfo) {
    804   return GetFontAscent(GetDefaultFontIndex(), GetFontSize());
    805 }
    806 
    807 FX_FLOAT CPDF_VariableText::GetLineDescent(const CPVT_SectionInfo& SecInfo) {
    808   return GetFontDescent(GetDefaultFontIndex(), GetFontSize());
    809 }
    810 
    811 FX_FLOAT CPDF_VariableText::GetFontAscent(int32_t nFontIndex,
    812                                           FX_FLOAT fFontSize) {
    813   return (FX_FLOAT)GetTypeAscent(nFontIndex) * fFontSize * kFontScale;
    814 }
    815 
    816 FX_FLOAT CPDF_VariableText::GetFontDescent(int32_t nFontIndex,
    817                                            FX_FLOAT fFontSize) {
    818   return (FX_FLOAT)GetTypeDescent(nFontIndex) * fFontSize * kFontScale;
    819 }
    820 
    821 FX_FLOAT CPDF_VariableText::GetWordAscent(const CPVT_WordInfo& WordInfo,
    822                                           FX_FLOAT fFontSize) {
    823   return GetFontAscent(GetWordFontIndex(WordInfo), fFontSize);
    824 }
    825 
    826 FX_FLOAT CPDF_VariableText::GetWordDescent(const CPVT_WordInfo& WordInfo,
    827                                            FX_FLOAT fFontSize) {
    828   return GetFontDescent(GetWordFontIndex(WordInfo), fFontSize);
    829 }
    830 
    831 FX_FLOAT CPDF_VariableText::GetWordAscent(const CPVT_WordInfo& WordInfo) {
    832   return GetFontAscent(GetWordFontIndex(WordInfo), GetWordFontSize(WordInfo));
    833 }
    834 
    835 FX_FLOAT CPDF_VariableText::GetWordDescent(const CPVT_WordInfo& WordInfo) {
    836   return GetFontDescent(GetWordFontIndex(WordInfo), GetWordFontSize(WordInfo));
    837 }
    838 
    839 FX_FLOAT CPDF_VariableText::GetLineLeading(const CPVT_SectionInfo& SecInfo) {
    840   return m_fLineLeading;
    841 }
    842 
    843 FX_FLOAT CPDF_VariableText::GetLineIndent(const CPVT_SectionInfo& SecInfo) {
    844   return 0.0f;
    845 }
    846 
    847 int32_t CPDF_VariableText::GetAlignment(const CPVT_SectionInfo& SecInfo) {
    848   return m_nAlignment;
    849 }
    850 
    851 FX_FLOAT CPDF_VariableText::GetCharSpace(const CPVT_WordInfo& WordInfo) {
    852   return m_fCharSpace;
    853 }
    854 
    855 int32_t CPDF_VariableText::GetHorzScale(const CPVT_WordInfo& WordInfo) {
    856   return m_nHorzScale;
    857 }
    858 
    859 void CPDF_VariableText::ClearSectionRightWords(const CPVT_WordPlace& place) {
    860   CPVT_WordPlace wordplace = AdjustLineHeader(place, true);
    861   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    862     for (int32_t w = pSection->m_WordArray.GetSize() - 1;
    863          w > wordplace.nWordIndex; w--) {
    864       delete pSection->m_WordArray.GetAt(w);
    865       pSection->m_WordArray.RemoveAt(w);
    866     }
    867   }
    868 }
    869 
    870 CPVT_WordPlace CPDF_VariableText::AdjustLineHeader(const CPVT_WordPlace& place,
    871                                                    bool bPrevOrNext) const {
    872   if (place.nWordIndex < 0 && place.nLineIndex > 0)
    873     return bPrevOrNext ? GetPrevWordPlace(place) : GetNextWordPlace(place);
    874   return place;
    875 }
    876 
    877 bool CPDF_VariableText::ClearEmptySection(const CPVT_WordPlace& place) {
    878   if (place.nSecIndex == 0 && m_SectionArray.GetSize() == 1)
    879     return false;
    880   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    881     if (pSection->m_WordArray.GetSize() == 0) {
    882       delete pSection;
    883       m_SectionArray.RemoveAt(place.nSecIndex);
    884       return true;
    885     }
    886   }
    887   return false;
    888 }
    889 
    890 void CPDF_VariableText::ClearEmptySections(const CPVT_WordRange& PlaceRange) {
    891   CPVT_WordPlace wordplace;
    892   for (int32_t s = PlaceRange.EndPos.nSecIndex;
    893        s > PlaceRange.BeginPos.nSecIndex; s--) {
    894     wordplace.nSecIndex = s;
    895     ClearEmptySection(wordplace);
    896   }
    897 }
    898 
    899 void CPDF_VariableText::LinkLatterSection(const CPVT_WordPlace& place) {
    900   CPVT_WordPlace oldplace = AdjustLineHeader(place, true);
    901   if (CSection* pNextSection = m_SectionArray.GetAt(place.nSecIndex + 1)) {
    902     if (CSection* pSection = m_SectionArray.GetAt(oldplace.nSecIndex)) {
    903       for (int32_t w = 0, sz = pNextSection->m_WordArray.GetSize(); w < sz;
    904            w++) {
    905         if (CPVT_WordInfo* pWord = pNextSection->m_WordArray.GetAt(w)) {
    906           oldplace.nWordIndex++;
    907           pSection->AddWord(oldplace, *pWord);
    908         }
    909       }
    910     }
    911     delete pNextSection;
    912     m_SectionArray.RemoveAt(place.nSecIndex + 1);
    913   }
    914 }
    915 
    916 void CPDF_VariableText::ClearWords(const CPVT_WordRange& PlaceRange) {
    917   CPVT_WordRange NewRange;
    918   NewRange.BeginPos = AdjustLineHeader(PlaceRange.BeginPos, true);
    919   NewRange.EndPos = AdjustLineHeader(PlaceRange.EndPos, true);
    920   for (int32_t s = NewRange.EndPos.nSecIndex; s >= NewRange.BeginPos.nSecIndex;
    921        s--) {
    922     if (CSection* pSection = m_SectionArray.GetAt(s))
    923       pSection->ClearWords(NewRange);
    924   }
    925 }
    926 
    927 CPVT_WordPlace CPDF_VariableText::ClearLeftWord(const CPVT_WordPlace& place) {
    928   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    929     CPVT_WordPlace leftplace = GetPrevWordPlace(place);
    930     if (leftplace != place) {
    931       if (leftplace.nSecIndex != place.nSecIndex) {
    932         if (pSection->m_WordArray.GetSize() == 0)
    933           ClearEmptySection(place);
    934         else
    935           LinkLatterSection(leftplace);
    936       } else {
    937         pSection->ClearWord(place);
    938       }
    939     }
    940     return leftplace;
    941   }
    942   return place;
    943 }
    944 
    945 CPVT_WordPlace CPDF_VariableText::ClearRightWord(const CPVT_WordPlace& place) {
    946   if (CSection* pSection = m_SectionArray.GetAt(place.nSecIndex)) {
    947     CPVT_WordPlace rightplace =
    948         AdjustLineHeader(GetNextWordPlace(place), false);
    949     if (rightplace != place) {
    950       if (rightplace.nSecIndex != place.nSecIndex)
    951         LinkLatterSection(place);
    952       else
    953         pSection->ClearWord(rightplace);
    954     }
    955   }
    956   return place;
    957 }
    958 
    959 void CPDF_VariableText::RearrangeAll() {
    960   Rearrange(CPVT_WordRange(GetBeginWordPlace(), GetEndWordPlace()));
    961 }
    962 
    963 void CPDF_VariableText::RearrangePart(const CPVT_WordRange& PlaceRange) {
    964   Rearrange(PlaceRange);
    965 }
    966 
    967 CPVT_FloatRect CPDF_VariableText::Rearrange(const CPVT_WordRange& PlaceRange) {
    968   CPVT_FloatRect rcRet;
    969   if (IsValid()) {
    970     if (m_bAutoFontSize) {
    971       SetFontSize(GetAutoFontSize());
    972       rcRet = RearrangeSections(
    973           CPVT_WordRange(GetBeginWordPlace(), GetEndWordPlace()));
    974     } else {
    975       rcRet = RearrangeSections(PlaceRange);
    976     }
    977   }
    978   SetContentRect(rcRet);
    979   return rcRet;
    980 }
    981 
    982 FX_FLOAT CPDF_VariableText::GetAutoFontSize() {
    983   int32_t nTotal = sizeof(gFontSizeSteps) / sizeof(uint8_t);
    984   if (IsMultiLine())
    985     nTotal /= 4;
    986   if (nTotal <= 0)
    987     return 0;
    988   if (GetPlateWidth() <= 0)
    989     return 0;
    990 
    991   int32_t nLeft = 0;
    992   int32_t nRight = nTotal - 1;
    993   int32_t nMid = nTotal / 2;
    994   while (nLeft <= nRight) {
    995     if (IsBigger(gFontSizeSteps[nMid])) {
    996       nRight = nMid - 1;
    997       nMid = (nLeft + nRight) / 2;
    998       continue;
    999     } else {
   1000       nLeft = nMid + 1;
   1001       nMid = (nLeft + nRight) / 2;
   1002       continue;
   1003     }
   1004   }
   1005   return (FX_FLOAT)gFontSizeSteps[nMid];
   1006 }
   1007 
   1008 bool CPDF_VariableText::IsBigger(FX_FLOAT fFontSize) const {
   1009   CFX_SizeF szTotal;
   1010   for (int32_t s = 0, sz = m_SectionArray.GetSize(); s < sz; s++) {
   1011     if (CSection* pSection = m_SectionArray.GetAt(s)) {
   1012       CFX_SizeF size = pSection->GetSectionSize(fFontSize);
   1013       szTotal.width = std::max(size.width, szTotal.width);
   1014       szTotal.height += size.height;
   1015       if (IsFloatBigger(szTotal.width, GetPlateWidth()) ||
   1016           IsFloatBigger(szTotal.height, GetPlateHeight())) {
   1017         return true;
   1018       }
   1019     }
   1020   }
   1021   return false;
   1022 }
   1023 
   1024 CPVT_FloatRect CPDF_VariableText::RearrangeSections(
   1025     const CPVT_WordRange& PlaceRange) {
   1026   CPVT_WordPlace place;
   1027   FX_FLOAT fPosY = 0;
   1028   FX_FLOAT fOldHeight;
   1029   int32_t nSSecIndex = PlaceRange.BeginPos.nSecIndex;
   1030   int32_t nESecIndex = PlaceRange.EndPos.nSecIndex;
   1031   CPVT_FloatRect rcRet;
   1032   for (int32_t s = 0, sz = m_SectionArray.GetSize(); s < sz; s++) {
   1033     place.nSecIndex = s;
   1034     if (CSection* pSection = m_SectionArray.GetAt(s)) {
   1035       pSection->SecPlace = place;
   1036       CPVT_FloatRect rcSec = pSection->m_SecInfo.rcSection;
   1037       if (s >= nSSecIndex) {
   1038         if (s <= nESecIndex) {
   1039           rcSec = pSection->Rearrange();
   1040           rcSec.top += fPosY;
   1041           rcSec.bottom += fPosY;
   1042         } else {
   1043           fOldHeight = pSection->m_SecInfo.rcSection.bottom -
   1044                        pSection->m_SecInfo.rcSection.top;
   1045           rcSec.top = fPosY;
   1046           rcSec.bottom = fPosY + fOldHeight;
   1047         }
   1048         pSection->m_SecInfo.rcSection = rcSec;
   1049         pSection->ResetLinePlace();
   1050       }
   1051       if (s == 0) {
   1052         rcRet = rcSec;
   1053       } else {
   1054         rcRet.left = std::min(rcSec.left, rcRet.left);
   1055         rcRet.top = std::min(rcSec.top, rcRet.top);
   1056         rcRet.right = std::max(rcSec.right, rcRet.right);
   1057         rcRet.bottom = std::max(rcSec.bottom, rcRet.bottom);
   1058       }
   1059       fPosY += rcSec.Height();
   1060     }
   1061   }
   1062   return rcRet;
   1063 }
   1064 
   1065 int32_t CPDF_VariableText::GetCharWidth(int32_t nFontIndex,
   1066                                         uint16_t Word,
   1067                                         uint16_t SubWord) {
   1068   if (!m_pVTProvider)
   1069     return 0;
   1070   uint16_t word = SubWord ? SubWord : Word;
   1071   return m_pVTProvider->GetCharWidth(nFontIndex, word);
   1072 }
   1073 
   1074 int32_t CPDF_VariableText::GetTypeAscent(int32_t nFontIndex) {
   1075   return m_pVTProvider ? m_pVTProvider->GetTypeAscent(nFontIndex) : 0;
   1076 }
   1077 
   1078 int32_t CPDF_VariableText::GetTypeDescent(int32_t nFontIndex) {
   1079   return m_pVTProvider ? m_pVTProvider->GetTypeDescent(nFontIndex) : 0;
   1080 }
   1081 
   1082 int32_t CPDF_VariableText::GetWordFontIndex(uint16_t word,
   1083                                             int32_t charset,
   1084                                             int32_t nFontIndex) {
   1085   return m_pVTProvider
   1086              ? m_pVTProvider->GetWordFontIndex(word, charset, nFontIndex)
   1087              : -1;
   1088 }
   1089 
   1090 int32_t CPDF_VariableText::GetDefaultFontIndex() {
   1091   return m_pVTProvider ? m_pVTProvider->GetDefaultFontIndex() : -1;
   1092 }
   1093 
   1094 bool CPDF_VariableText::IsLatinWord(uint16_t word) {
   1095   return m_pVTProvider ? m_pVTProvider->IsLatinWord(word) : false;
   1096 }
   1097 
   1098 CPDF_VariableText::Iterator* CPDF_VariableText::GetIterator() {
   1099   if (!m_pVTIterator)
   1100     m_pVTIterator = pdfium::MakeUnique<CPDF_VariableText::Iterator>(this);
   1101   return m_pVTIterator.get();
   1102 }
   1103 
   1104 void CPDF_VariableText::SetProvider(CPDF_VariableText::Provider* pProvider) {
   1105   m_pVTProvider = pProvider;
   1106 }
   1107 
   1108 CFX_SizeF CPDF_VariableText::GetPlateSize() const {
   1109   return CFX_SizeF(GetPlateWidth(), GetPlateHeight());
   1110 }
   1111 
   1112 CFX_PointF CPDF_VariableText::GetBTPoint() const {
   1113   return CFX_PointF(m_rcPlate.left, m_rcPlate.top);
   1114 }
   1115 
   1116 CFX_PointF CPDF_VariableText::GetETPoint() const {
   1117   return CFX_PointF(m_rcPlate.right, m_rcPlate.bottom);
   1118 }
   1119 
   1120 CFX_PointF CPDF_VariableText::InToOut(const CFX_PointF& point) const {
   1121   return CFX_PointF(point.x + GetBTPoint().x, GetBTPoint().y - point.y);
   1122 }
   1123 
   1124 CFX_PointF CPDF_VariableText::OutToIn(const CFX_PointF& point) const {
   1125   return CFX_PointF(point.x - GetBTPoint().x, GetBTPoint().y - point.y);
   1126 }
   1127 
   1128 CFX_FloatRect CPDF_VariableText::InToOut(const CPVT_FloatRect& rect) const {
   1129   CFX_PointF ptLeftTop = InToOut(CFX_PointF(rect.left, rect.top));
   1130   CFX_PointF ptRightBottom = InToOut(CFX_PointF(rect.right, rect.bottom));
   1131   return CFX_FloatRect(ptLeftTop.x, ptRightBottom.y, ptRightBottom.x,
   1132                        ptLeftTop.y);
   1133 }
   1134 
   1135 CPVT_FloatRect CPDF_VariableText::OutToIn(const CFX_FloatRect& rect) const {
   1136   CFX_PointF ptLeftTop = OutToIn(CFX_PointF(rect.left, rect.top));
   1137   CFX_PointF ptRightBottom = OutToIn(CFX_PointF(rect.right, rect.bottom));
   1138   return CPVT_FloatRect(ptLeftTop.x, ptLeftTop.y, ptRightBottom.x,
   1139                         ptRightBottom.y);
   1140 }
   1141