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