| // Copyright 2014 The PDFium Authors |
| // 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/cfgas_rtfbreak.h" |
| |
| #include <algorithm> |
| |
| #include "build/build_config.h" |
| #include "core/fxcrt/fx_extension.h" |
| #include "core/fxcrt/fx_safe_types.h" |
| #include "core/fxcrt/stl_util.h" |
| #include "core/fxge/text_char_pos.h" |
| #include "third_party/base/check.h" |
| #include "third_party/base/containers/adapters.h" |
| #include "third_party/base/numerics/safe_math.h" |
| #include "xfa/fgas/font/cfgas_gefont.h" |
| #include "xfa/fgas/layout/cfgas_char.h" |
| #include "xfa/fgas/layout/cfgas_textpiece.h" |
| #include "xfa/fgas/layout/cfgas_textuserdata.h" |
| #include "xfa/fgas/layout/fgas_arabic.h" |
| #include "xfa/fgas/layout/fgas_linebreak.h" |
| |
| CFGAS_RTFBreak::CFGAS_RTFBreak(Mask<LayoutStyle> dwLayoutStyles) |
| : CFGAS_Break(dwLayoutStyles) { |
| SetBreakStatus(); |
| m_bPagination = !!(m_dwLayoutStyles & LayoutStyle::kPagination); |
| } |
| |
| CFGAS_RTFBreak::~CFGAS_RTFBreak() = default; |
| |
| void CFGAS_RTFBreak::SetLineStartPos(float fLinePos) { |
| int32_t iLinePos = FXSYS_roundf(fLinePos * kConversionFactor); |
| iLinePos = std::min(iLinePos, m_iLineWidth); |
| iLinePos = std::max(iLinePos, m_iLineStart); |
| m_pCurLine->m_iStart = iLinePos; |
| } |
| |
| void CFGAS_RTFBreak::AddPositionedTab(float fTabPos) { |
| int32_t iTabPos = std::min( |
| FXSYS_roundf(fTabPos * kConversionFactor) + 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 CFGAS_RTFBreak::SetUserData( |
| const RetainPtr<CFGAS_TextUserData>& pUserData) { |
| if (m_pUserData == pUserData) |
| return; |
| |
| SetBreakStatus(); |
| m_pUserData = pUserData; |
| } |
| |
| bool CFGAS_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; |
| } |
| |
| CFGAS_Char::BreakType CFGAS_RTFBreak::AppendChar(wchar_t wch) { |
| DCHECK(m_pCurLine); |
| |
| FX_CHARTYPE chartype = pdfium::unicode::GetCharType(wch); |
| m_pCurLine->m_LineChars.emplace_back(wch, m_iHorizontalScale, |
| m_iVerticalScale); |
| CFGAS_Char* pCurChar = &m_pCurLine->m_LineChars.back(); |
| pCurChar->m_iFontSize = m_iFontSize; |
| pCurChar->m_dwIdentity = m_dwIdentity; |
| pCurChar->m_pUserData = m_pUserData; |
| |
| CFGAS_Char::BreakType dwRet1 = CFGAS_Char::BreakType::kNone; |
| if (chartype != FX_CHARTYPE::kCombination && |
| GetUnifiedCharType(m_eCharType) != GetUnifiedCharType(chartype) && |
| m_eCharType != FX_CHARTYPE::kUnknown && |
| IsGreaterThanLineWidth(m_pCurLine->GetLineEnd()) && |
| (m_eCharType != FX_CHARTYPE::kSpace || |
| chartype != FX_CHARTYPE::kControl)) { |
| dwRet1 = EndBreak(CFGAS_Char::BreakType::kLine); |
| if (!m_pCurLine->m_LineChars.empty()) |
| pCurChar = &m_pCurLine->m_LineChars.back(); |
| } |
| |
| CFGAS_Char::BreakType dwRet2 = CFGAS_Char::BreakType::kNone; |
| switch (chartype) { |
| case FX_CHARTYPE::kTab: |
| AppendChar_Tab(pCurChar); |
| break; |
| case FX_CHARTYPE::kControl: |
| dwRet2 = AppendChar_Control(pCurChar); |
| break; |
| case FX_CHARTYPE::kCombination: |
| AppendChar_Combination(pCurChar); |
| break; |
| case FX_CHARTYPE::kArabicAlef: |
| case FX_CHARTYPE::kArabicSpecial: |
| case FX_CHARTYPE::kArabicDistortion: |
| case FX_CHARTYPE::kArabicNormal: |
| case FX_CHARTYPE::kArabicForm: |
| case FX_CHARTYPE::kArabic: |
| dwRet2 = AppendChar_Arabic(pCurChar); |
| break; |
| case FX_CHARTYPE::kUnknown: |
| case FX_CHARTYPE::kSpace: |
| case FX_CHARTYPE::kNumeric: |
| case FX_CHARTYPE::kNormal: |
| default: |
| dwRet2 = AppendChar_Others(pCurChar); |
| break; |
| } |
| |
| m_eCharType = chartype; |
| return std::max(dwRet1, dwRet2); |
| } |
| |
| void CFGAS_RTFBreak::AppendChar_Combination(CFGAS_Char* pCurChar) { |
| absl::optional<uint16_t> iCharWidthRet; |
| if (m_pFont) { |
| iCharWidthRet = m_pFont->GetCharWidth(pCurChar->char_code()); |
| } |
| FX_SAFE_INT32 iCharWidth = iCharWidthRet.value_or(0); |
| iCharWidth *= m_iFontSize; |
| iCharWidth *= m_iHorizontalScale; |
| iCharWidth /= 100; |
| CFGAS_Char* pLastChar = GetLastChar(0, false, true); |
| if (pLastChar && pLastChar->GetCharType() > FX_CHARTYPE::kCombination) |
| iCharWidth *= -1; |
| else |
| m_eCharType = FX_CHARTYPE::kCombination; |
| |
| int32_t iCharWidthValid = iCharWidth.ValueOrDefault(0); |
| pCurChar->m_iCharWidth = iCharWidthValid; |
| if (iCharWidthValid > 0) { |
| FX_SAFE_INT32 checked_width = m_pCurLine->m_iWidth; |
| checked_width += iCharWidthValid; |
| if (!checked_width.IsValid()) |
| return; |
| |
| m_pCurLine->m_iWidth = checked_width.ValueOrDie(); |
| } |
| } |
| |
| void CFGAS_RTFBreak::AppendChar_Tab(CFGAS_Char* pCurChar) { |
| if (!(m_dwLayoutStyles & LayoutStyle::kExpandTab)) |
| return; |
| |
| int32_t& iLineWidth = m_pCurLine->m_iWidth; |
| int32_t iCharWidth = iLineWidth; |
| FX_SAFE_INT32 iSafeCharWidth; |
| if (GetPositionedTab(&iCharWidth)) { |
| iSafeCharWidth = iCharWidth; |
| } else { |
| // Tab width is >= 160000, so this part does not need to be checked. |
| DCHECK(m_iTabWidth >= kMinimumTabWidth); |
| iSafeCharWidth = iLineWidth / m_iTabWidth + 1; |
| iSafeCharWidth *= m_iTabWidth; |
| } |
| iSafeCharWidth -= iLineWidth; |
| |
| iCharWidth = iSafeCharWidth.ValueOrDefault(0); |
| |
| pCurChar->m_iCharWidth = iCharWidth; |
| iLineWidth += iCharWidth; |
| } |
| |
| CFGAS_Char::BreakType CFGAS_RTFBreak::AppendChar_Control(CFGAS_Char* pCurChar) { |
| CFGAS_Char::BreakType dwRet2 = CFGAS_Char::BreakType::kNone; |
| switch (pCurChar->char_code()) { |
| case L'\v': |
| case pdfium::unicode::kLineSeparator: |
| dwRet2 = CFGAS_Char::BreakType::kLine; |
| break; |
| case L'\f': |
| dwRet2 = CFGAS_Char::BreakType::kPage; |
| break; |
| case pdfium::unicode::kParagraphSeparator: |
| dwRet2 = CFGAS_Char::BreakType::kParagraph; |
| break; |
| default: |
| if (pCurChar->char_code() == m_wParagraphBreakChar) |
| dwRet2 = CFGAS_Char::BreakType::kParagraph; |
| break; |
| } |
| if (dwRet2 != CFGAS_Char::BreakType::kNone) |
| dwRet2 = EndBreak(dwRet2); |
| |
| return dwRet2; |
| } |
| |
| CFGAS_Char::BreakType CFGAS_RTFBreak::AppendChar_Arabic(CFGAS_Char* pCurChar) { |
| m_pCurLine->IncrementArabicCharCount(); |
| |
| CFGAS_Char* pLastChar = nullptr; |
| wchar_t wForm; |
| bool bAlef = false; |
| if (m_eCharType >= FX_CHARTYPE::kArabicAlef && |
| m_eCharType <= FX_CHARTYPE::kArabicDistortion) { |
| pLastChar = GetLastChar(1, false, true); |
| if (pLastChar) { |
| m_pCurLine->m_iWidth -= pLastChar->m_iCharWidth; |
| CFGAS_Char* pPrevChar = GetLastChar(2, false, true); |
| wForm = pdfium::arabic::GetFormChar(pLastChar, pPrevChar, pCurChar); |
| bAlef = (wForm == pdfium::unicode::kZeroWidthNoBreakSpace && |
| pLastChar->GetCharType() == FX_CHARTYPE::kArabicAlef); |
| FX_SAFE_INT32 iCharWidth = 0; |
| if (m_pFont) { |
| absl::optional<uint16_t> iCharWidthRet = m_pFont->GetCharWidth(wForm); |
| if (iCharWidthRet.has_value()) { |
| iCharWidth = iCharWidthRet.value(); |
| } else { |
| iCharWidthRet = m_pFont->GetCharWidth(pLastChar->char_code()); |
| iCharWidth = iCharWidthRet.value_or(0); |
| } |
| } |
| iCharWidth *= m_iFontSize; |
| iCharWidth *= m_iHorizontalScale; |
| iCharWidth /= 100; |
| |
| int iCharWidthValid = iCharWidth.ValueOrDefault(0); |
| pLastChar->m_iCharWidth = iCharWidthValid; |
| |
| FX_SAFE_INT32 checked_width = m_pCurLine->m_iWidth; |
| checked_width += iCharWidthValid; |
| if (!checked_width.IsValid()) |
| return CFGAS_Char::BreakType::kNone; |
| |
| m_pCurLine->m_iWidth = checked_width.ValueOrDie(); |
| iCharWidth = 0; |
| } |
| } |
| |
| wForm = pdfium::arabic::GetFormChar(pCurChar, bAlef ? nullptr : pLastChar, |
| nullptr); |
| FX_SAFE_INT32 iCharWidth = 0; |
| if (m_pFont) { |
| absl::optional<uint16_t> iCharWidthRet = m_pFont->GetCharWidth(wForm); |
| if (!iCharWidthRet.has_value()) |
| iCharWidthRet = m_pFont->GetCharWidth(pCurChar->char_code()); |
| iCharWidth = iCharWidthRet.value_or(0); |
| iCharWidth *= m_iFontSize; |
| iCharWidth *= m_iHorizontalScale; |
| iCharWidth /= 100; |
| } |
| |
| int iCharWidthValid = iCharWidth.ValueOrDefault(0); |
| pCurChar->m_iCharWidth = iCharWidthValid; |
| |
| FX_SAFE_INT32 checked_width = m_pCurLine->m_iWidth; |
| checked_width += iCharWidthValid; |
| if (!checked_width.IsValid()) |
| return CFGAS_Char::BreakType::kNone; |
| |
| m_pCurLine->m_iWidth = checked_width.ValueOrDie(); |
| |
| if (IsGreaterThanLineWidth(m_pCurLine->GetLineEnd())) |
| return EndBreak(CFGAS_Char::BreakType::kLine); |
| return CFGAS_Char::BreakType::kNone; |
| } |
| |
| CFGAS_Char::BreakType CFGAS_RTFBreak::AppendChar_Others(CFGAS_Char* pCurChar) { |
| FX_CHARTYPE chartype = pCurChar->GetCharType(); |
| wchar_t wForm = pCurChar->char_code(); |
| FX_SAFE_INT32 iCharWidth = 0; |
| if (m_pFont) { |
| iCharWidth = m_pFont->GetCharWidth(wForm).value_or(0); |
| } |
| iCharWidth *= m_iFontSize; |
| iCharWidth *= m_iHorizontalScale; |
| iCharWidth /= 100; |
| iCharWidth += m_iCharSpace; |
| |
| int iValidCharWidth = iCharWidth.ValueOrDefault(0); |
| pCurChar->m_iCharWidth = iValidCharWidth; |
| |
| FX_SAFE_INT32 checked_width = m_pCurLine->m_iWidth; |
| checked_width += iValidCharWidth; |
| if (!checked_width.IsValid()) |
| return CFGAS_Char::BreakType::kNone; |
| |
| m_pCurLine->m_iWidth = checked_width.ValueOrDie(); |
| if (chartype != FX_CHARTYPE::kSpace && |
| IsGreaterThanLineWidth(m_pCurLine->GetLineEnd())) { |
| return EndBreak(CFGAS_Char::BreakType::kLine); |
| } |
| return CFGAS_Char::BreakType::kNone; |
| } |
| |
| CFGAS_Char::BreakType CFGAS_RTFBreak::EndBreak(CFGAS_Char::BreakType dwStatus) { |
| DCHECK(dwStatus != CFGAS_Char::BreakType::kNone); |
| |
| ++m_dwIdentity; |
| if (!m_pCurLine->m_LinePieces.empty()) { |
| if (dwStatus != CFGAS_Char::BreakType::kPiece) |
| m_pCurLine->m_LinePieces.back().SetStatus(dwStatus); |
| return m_pCurLine->m_LinePieces.back().GetStatus(); |
| } |
| |
| if (HasLine()) { |
| if (m_Lines[m_iReadyLineIndex].m_LinePieces.empty()) |
| return CFGAS_Char::BreakType::kNone; |
| |
| if (dwStatus != CFGAS_Char::BreakType::kPiece) |
| m_Lines[m_iReadyLineIndex].m_LinePieces.back().SetStatus(dwStatus); |
| return m_Lines[m_iReadyLineIndex].m_LinePieces.back().GetStatus(); |
| } |
| |
| CFGAS_Char* tc = m_pCurLine->LastChar(); |
| if (!tc) |
| return CFGAS_Char::BreakType::kNone; |
| |
| tc->m_dwStatus = dwStatus; |
| if (dwStatus == CFGAS_Char::BreakType::kPiece) |
| return dwStatus; |
| |
| m_iReadyLineIndex = m_pCurLine == &m_Lines[0] ? 0 : 1; |
| CFGAS_BreakLine* pNextLine = &m_Lines[1 - m_iReadyLineIndex]; |
| bool bAllChars = m_iAlignment == LineAlignment::Justified || |
| m_iAlignment == LineAlignment::Distributed; |
| |
| if (!EndBreakSplitLine(pNextLine, bAllChars, dwStatus)) { |
| std::deque<TPO> tpos = EndBreakBidiLine(dwStatus); |
| if (!m_bPagination && m_iAlignment != LineAlignment::Left) |
| EndBreakAlignment(tpos, bAllChars, dwStatus); |
| } |
| m_pCurLine = pNextLine; |
| m_pCurLine->m_iStart = m_iLineStart; |
| |
| CFGAS_Char* pTC = GetLastChar(0, false, true); |
| m_eCharType = pTC ? pTC->GetCharType() : FX_CHARTYPE::kUnknown; |
| return dwStatus; |
| } |
| |
| bool CFGAS_RTFBreak::EndBreakSplitLine(CFGAS_BreakLine* pNextLine, |
| bool bAllChars, |
| CFGAS_Char::BreakType dwStatus) { |
| bool bDone = false; |
| if (IsGreaterThanLineWidth(m_pCurLine->GetLineEnd())) { |
| const CFGAS_Char* tc = m_pCurLine->LastChar(); |
| switch (tc->GetCharType()) { |
| case FX_CHARTYPE::kTab: |
| case FX_CHARTYPE::kControl: |
| case FX_CHARTYPE::kSpace: |
| 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, bAllChars, true, &endPos); |
| } |
| return false; |
| } |
| |
| const CFGAS_Char* pCurChars = m_pCurLine->m_LineChars.data(); |
| CFGAS_BreakPiece tp; |
| tp.SetChars(&m_pCurLine->m_LineChars); |
| bool bNew = true; |
| uint32_t dwIdentity = static_cast<uint32_t>(-1); |
| int32_t iLast = fxcrt::CollectionSize<int32_t>(m_pCurLine->m_LineChars) - 1; |
| int32_t j = 0; |
| for (int32_t i = 0; i <= iLast;) { |
| const CFGAS_Char* pTC = pCurChars + i; |
| if (bNew) { |
| tp.SetStartChar(i); |
| tp.IncrementStartPos(tp.GetWidth()); |
| tp.SetWidth(0); |
| tp.SetStatus(pTC->m_dwStatus); |
| tp.SetFontSize(pTC->m_iFontSize); |
| tp.SetHorizontalScale(pTC->horizonal_scale()); |
| tp.SetVerticalScale(pTC->vertical_scale()); |
| dwIdentity = pTC->m_dwIdentity; |
| tp.SetUserData(pTC->m_pUserData); |
| j = i; |
| bNew = false; |
| } |
| |
| if (i == iLast || pTC->m_dwStatus != CFGAS_Char::BreakType::kNone || |
| pTC->m_dwIdentity != dwIdentity) { |
| if (pTC->m_dwIdentity == dwIdentity) { |
| tp.SetStatus(pTC->m_dwStatus); |
| tp.IncrementWidth(pTC->m_iCharWidth); |
| ++i; |
| } |
| tp.SetCharCount(i - j); |
| m_pCurLine->m_LinePieces.push_back(tp); |
| bNew = true; |
| } else { |
| tp.IncrementWidth(pTC->m_iCharWidth); |
| ++i; |
| } |
| } |
| return true; |
| } |
| |
| std::deque<CFGAS_Break::TPO> CFGAS_RTFBreak::EndBreakBidiLine( |
| CFGAS_Char::BreakType dwStatus) { |
| CFGAS_Char* pTC; |
| std::vector<CFGAS_Char>& chars = m_pCurLine->m_LineChars; |
| if (!m_bPagination && m_pCurLine->HasArabicChar()) { |
| size_t iBidiNum = 0; |
| for (size_t i = 0; i < m_pCurLine->m_LineChars.size(); ++i) { |
| pTC = &chars[i]; |
| pTC->m_iBidiPos = static_cast<int32_t>(i); |
| if (pTC->GetCharType() != FX_CHARTYPE::kControl) |
| iBidiNum = i; |
| if (i == 0) |
| pTC->m_iBidiLevel = 1; |
| } |
| CFGAS_Char::BidiLine(&chars, iBidiNum + 1); |
| } else { |
| for (size_t i = 0; i < m_pCurLine->m_LineChars.size(); ++i) { |
| pTC = &chars[i]; |
| pTC->m_iBidiLevel = 0; |
| pTC->m_iBidiPos = 0; |
| pTC->m_iBidiOrder = 0; |
| } |
| } |
| |
| CFGAS_BreakPiece tp; |
| tp.SetStatus(CFGAS_Char::BreakType::kPiece); |
| tp.SetStartPos(m_pCurLine->m_iStart); |
| tp.SetChars(&chars); |
| |
| int32_t iBidiLevel = -1; |
| int32_t iCharWidth; |
| std::deque<TPO> tpos; |
| uint32_t dwIdentity = static_cast<uint32_t>(-1); |
| int32_t i = 0; |
| int32_t j = 0; |
| int32_t iCount = fxcrt::CollectionSize<int32_t>(m_pCurLine->m_LineChars); |
| while (i < iCount) { |
| pTC = &chars[i]; |
| if (iBidiLevel < 0) { |
| iBidiLevel = pTC->m_iBidiLevel; |
| iCharWidth = pTC->m_iCharWidth; |
| tp.SetWidth(iCharWidth < 1 ? 0 : iCharWidth); |
| tp.SetBidiLevel(iBidiLevel); |
| tp.SetBidiPos(pTC->m_iBidiOrder); |
| tp.SetFontSize(pTC->m_iFontSize); |
| tp.SetHorizontalScale(pTC->horizonal_scale()); |
| tp.SetVerticalScale(pTC->vertical_scale()); |
| dwIdentity = pTC->m_dwIdentity; |
| tp.SetUserData(pTC->m_pUserData); |
| tp.SetStatus(CFGAS_Char::BreakType::kPiece); |
| ++i; |
| } else if (iBidiLevel != pTC->m_iBidiLevel || |
| pTC->m_dwIdentity != dwIdentity) { |
| tp.SetCharCount(i - tp.GetStartChar()); |
| m_pCurLine->m_LinePieces.push_back(tp); |
| tp.IncrementStartPos(tp.GetWidth()); |
| tp.SetStartChar(i); |
| tpos.push_back({j++, tp.GetBidiPos()}); |
| iBidiLevel = -1; |
| } else { |
| iCharWidth = pTC->m_iCharWidth; |
| if (iCharWidth > 0) |
| tp.IncrementWidth(iCharWidth); |
| ++i; |
| } |
| } |
| |
| if (i > tp.GetStartChar()) { |
| tp.SetStatus(dwStatus); |
| tp.SetCharCount(i - tp.GetStartChar()); |
| m_pCurLine->m_LinePieces.push_back(tp); |
| tpos.push_back({j, tp.GetBidiPos()}); |
| } |
| |
| std::sort(tpos.begin(), tpos.end()); |
| int32_t iStartPos = m_pCurLine->m_iStart; |
| for (const auto& it : tpos) { |
| CFGAS_BreakPiece& ttp = m_pCurLine->m_LinePieces[it.index]; |
| ttp.SetStartPos(iStartPos); |
| iStartPos += ttp.GetWidth(); |
| } |
| return tpos; |
| } |
| |
| void CFGAS_RTFBreak::EndBreakAlignment(const std::deque<TPO>& tpos, |
| bool bAllChars, |
| CFGAS_Char::BreakType dwStatus) { |
| int32_t iNetWidth = m_pCurLine->m_iWidth; |
| int32_t iGapChars = 0; |
| bool bFind = false; |
| for (const TPO& pos : pdfium::base::Reversed(tpos)) { |
| const CFGAS_BreakPiece& ttp = m_pCurLine->m_LinePieces[pos.index]; |
| if (!bFind) |
| iNetWidth = ttp.GetEndPos(); |
| |
| bool bArabic = FX_IsOdd(ttp.GetBidiLevel()); |
| int32_t j = bArabic ? 0 : ttp.GetCharCount() - 1; |
| while (j > -1 && j < ttp.GetCharCount()) { |
| const CFGAS_Char* tc = ttp.GetChar(j); |
| if (tc->m_eLineBreakType == FX_LINEBREAKTYPE::kDIRECT_BRK) |
| ++iGapChars; |
| |
| if (!bFind || !bAllChars) { |
| FX_CHARTYPE dwCharType = tc->GetCharType(); |
| if (dwCharType == FX_CHARTYPE::kSpace || |
| dwCharType == FX_CHARTYPE::kControl) { |
| 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 == LineAlignment::Distributed || |
| (m_iAlignment == LineAlignment::Justified && |
| dwStatus != CFGAS_Char::BreakType::kParagraph))) { |
| int32_t iStart = -1; |
| for (const auto& tpo : tpos) { |
| CFGAS_BreakPiece& ttp = m_pCurLine->m_LinePieces[tpo.index]; |
| if (iStart < 0) |
| iStart = ttp.GetStartPos(); |
| else |
| ttp.SetStartPos(iStart); |
| |
| for (int32_t j = 0; j < ttp.GetCharCount(); ++j) { |
| CFGAS_Char* tc = ttp.GetChar(j); |
| if (tc->m_eLineBreakType != FX_LINEBREAKTYPE::kDIRECT_BRK || |
| tc->m_iCharWidth < 0) { |
| continue; |
| } |
| int32_t k = iOffset / iGapChars; |
| tc->m_iCharWidth += k; |
| ttp.IncrementWidth(k); |
| iOffset -= k; |
| --iGapChars; |
| if (iGapChars < 1) |
| break; |
| } |
| iStart += ttp.GetWidth(); |
| } |
| } else if (m_iAlignment == LineAlignment::Right || |
| m_iAlignment == LineAlignment::Center) { |
| if (m_iAlignment == LineAlignment::Center) |
| iOffset /= 2; |
| if (iOffset > 0) { |
| for (auto& ttp : m_pCurLine->m_LinePieces) |
| ttp.IncrementStartPos(iOffset); |
| } |
| } |
| } |
| |
| int32_t CFGAS_RTFBreak::GetBreakPos(std::vector<CFGAS_Char>& tca, |
| bool bAllChars, |
| bool bOnlyBrk, |
| int32_t* pEndPos) { |
| int32_t iLength = fxcrt::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 (*pEndPos <= m_iLineWidth) { |
| if (!bAllChars) |
| return iLength; |
| |
| iBreak = iLength; |
| iBreakPos = *pEndPos; |
| } |
| |
| CFGAS_Char* pCharArray = tca.data(); |
| CFGAS_Char* pCur = pCharArray + iLength; |
| --iLength; |
| if (bAllChars) |
| pCur->m_eLineBreakType = FX_LINEBREAKTYPE::kUNKNOWN; |
| |
| FX_BREAKPROPERTY nNext = pdfium::unicode::GetBreakProperty(pCur->char_code()); |
| int32_t iCharWidth = pCur->m_iCharWidth; |
| if (iCharWidth > 0) |
| *pEndPos -= iCharWidth; |
| |
| while (iLength >= 0) { |
| pCur = pCharArray + iLength; |
| FX_BREAKPROPERTY nCur = |
| pdfium::unicode::GetBreakProperty(pCur->char_code()); |
| bool bNeedBreak = false; |
| FX_LINEBREAKTYPE eType; |
| if (nCur == FX_BREAKPROPERTY::kTB) { |
| bNeedBreak = true; |
| eType = nNext == FX_BREAKPROPERTY::kTB |
| ? FX_LINEBREAKTYPE::kPROHIBITED_BRK |
| : GetLineBreakTypeFromPair(nCur, nNext); |
| } else { |
| if (nCur == FX_BREAKPROPERTY::kSP) |
| bNeedBreak = true; |
| |
| eType = nNext == FX_BREAKPROPERTY::kSP |
| ? FX_LINEBREAKTYPE::kPROHIBITED_BRK |
| : GetLineBreakTypeFromPair(nCur, nNext); |
| } |
| if (bAllChars) |
| pCur->m_eLineBreakType = eType; |
| |
| if (!bOnlyBrk) { |
| iCharWidth = pCur->m_iCharWidth; |
| if (*pEndPos <= m_iLineWidth || bNeedBreak) { |
| if (eType == FX_LINEBREAKTYPE::kDIRECT_BRK && iBreak < 0) { |
| iBreak = iLength; |
| iBreakPos = *pEndPos; |
| if (!bAllChars) |
| return iLength; |
| } else if (eType == FX_LINEBREAKTYPE::kINDIRECT_BRK && iIndirect < 0) { |
| iIndirect = iLength; |
| iIndirectPos = *pEndPos; |
| } |
| if (iLast < 0) { |
| iLast = iLength; |
| iLastPos = *pEndPos; |
| } |
| } |
| if (iCharWidth > 0) |
| *pEndPos -= iCharWidth; |
| } |
| nNext = nCur; |
| --iLength; |
| } |
| if (bOnlyBrk) |
| return 0; |
| |
| if (iBreak > -1) { |
| *pEndPos = iBreakPos; |
| return iBreak; |
| } |
| if (iIndirect > -1) { |
| *pEndPos = iIndirectPos; |
| return iIndirect; |
| } |
| if (iLast > -1) { |
| *pEndPos = iLastPos; |
| return iLast; |
| } |
| return 0; |
| } |
| |
| void CFGAS_RTFBreak::SplitTextLine(CFGAS_BreakLine* pCurLine, |
| CFGAS_BreakLine* pNextLine, |
| bool bAllChars) { |
| DCHECK(pCurLine); |
| DCHECK(pNextLine); |
| |
| if (pCurLine->m_LineChars.size() < 2) |
| return; |
| |
| int32_t iEndPos = pCurLine->GetLineEnd(); |
| std::vector<CFGAS_Char>& curChars = pCurLine->m_LineChars; |
| int32_t iCharPos = GetBreakPos(curChars, bAllChars, false, &iEndPos); |
| if (iCharPos < 0) |
| iCharPos = 0; |
| |
| ++iCharPos; |
| if (iCharPos >= fxcrt::CollectionSize<int32_t>(pCurLine->m_LineChars)) { |
| pNextLine->Clear(); |
| curChars[iCharPos - 1].m_eLineBreakType = FX_LINEBREAKTYPE::kUNKNOWN; |
| return; |
| } |
| |
| pNextLine->m_LineChars = |
| std::vector<CFGAS_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_eLineBreakType = FX_LINEBREAKTYPE::kUNKNOWN; |
| |
| for (size_t i = 0; i < pNextLine->m_LineChars.size(); ++i) { |
| if (pNextLine->m_LineChars[i].GetCharType() >= FX_CHARTYPE::kArabicAlef) { |
| pCurLine->DecrementArabicCharCount(); |
| pNextLine->IncrementArabicCharCount(); |
| } |
| pNextLine->m_LineChars[i].m_dwStatus = CFGAS_Char::BreakType::kNone; |
| } |
| } |
| |
| size_t CFGAS_RTFBreak::GetDisplayPos(const CFGAS_TextPiece* pPiece, |
| std::vector<TextCharPos>* pCharPos) const { |
| if (pPiece->iChars == 0 || !pPiece->pFont) |
| return 0; |
| |
| RetainPtr<CFGAS_GEFont> pFont = pPiece->pFont; |
| CFX_RectF rtText(pPiece->rtPiece); |
| const bool bRTLPiece = FX_IsOdd(pPiece->iBidiLevel); |
| const float fFontSize = pPiece->fFontSize; |
| const int32_t iFontSize = FXSYS_roundf(fFontSize * 20.0f); |
| if (iFontSize == 0) |
| return 0; |
| |
| const int32_t iAscent = pFont->GetAscent(); |
| const int32_t iDescent = pFont->GetDescent(); |
| const int32_t iMaxHeight = iAscent - iDescent; |
| const float fAscent = iMaxHeight ? fFontSize * iAscent / iMaxHeight : 0; |
| wchar_t wPrev = pdfium::unicode::kZeroWidthNoBreakSpace; |
| wchar_t wNext; |
| float fX = rtText.left; |
| int32_t iHorScale = pPiece->iHorScale; |
| int32_t iVerScale = pPiece->iVerScale; |
| if (bRTLPiece) |
| fX = rtText.right(); |
| |
| float fY = rtText.top + fAscent; |
| size_t szCount = 0; |
| for (int32_t i = 0; i < pPiece->iChars; ++i) { |
| TextCharPos& current_char_pos = (*pCharPos)[szCount]; |
| wchar_t wch = pPiece->szText[i]; |
| int32_t iWidth = pPiece->Widths[i]; |
| FX_CHARTYPE dwCharType = pdfium::unicode::GetCharType(wch); |
| if (iWidth == 0) { |
| if (dwCharType == FX_CHARTYPE::kArabicAlef) |
| wPrev = pdfium::unicode::kZeroWidthNoBreakSpace; |
| continue; |
| } |
| |
| int iCharWidth = abs(iWidth); |
| const bool bEmptyChar = (dwCharType >= FX_CHARTYPE::kTab && |
| dwCharType <= FX_CHARTYPE::kControl); |
| if (!bEmptyChar) |
| ++szCount; |
| |
| iCharWidth /= iFontSize; |
| wchar_t wForm = wch; |
| if (dwCharType >= FX_CHARTYPE::kArabicAlef) { |
| if (i + 1 < pPiece->iChars) { |
| wNext = pPiece->szText[i + 1]; |
| if (pPiece->Widths[i + 1] < 0 && i + 2 < pPiece->iChars) |
| wNext = pPiece->szText[i + 2]; |
| } else { |
| wNext = pdfium::unicode::kZeroWidthNoBreakSpace; |
| } |
| wForm = pdfium::arabic::GetFormChar(wch, wPrev, wNext); |
| } else if (bRTLPiece) { |
| wForm = pdfium::unicode::GetMirrorChar(wch); |
| } |
| |
| if (!bEmptyChar) { |
| current_char_pos.m_GlyphIndex = pFont->GetGlyphIndex(wForm); |
| if (current_char_pos.m_GlyphIndex == 0xFFFF) |
| current_char_pos.m_GlyphIndex = pFont->GetGlyphIndex(wch); |
| #if BUILDFLAG(IS_APPLE) |
| current_char_pos.m_ExtGID = current_char_pos.m_GlyphIndex; |
| #endif |
| current_char_pos.m_FontCharWidth = iCharWidth; |
| } |
| |
| float fCharWidth = fFontSize * iCharWidth / 1000.0f; |
| if (bRTLPiece && dwCharType != FX_CHARTYPE::kCombination) |
| fX -= fCharWidth; |
| |
| if (!bEmptyChar) |
| current_char_pos.m_Origin = CFX_PointF(fX, fY); |
| if (!bRTLPiece && dwCharType != FX_CHARTYPE::kCombination) |
| fX += fCharWidth; |
| |
| if (!bEmptyChar) { |
| current_char_pos.m_bGlyphAdjust = true; |
| current_char_pos.m_AdjustMatrix[0] = -1; |
| current_char_pos.m_AdjustMatrix[1] = 0; |
| current_char_pos.m_AdjustMatrix[2] = 0; |
| current_char_pos.m_AdjustMatrix[3] = 1; |
| current_char_pos.m_Origin.y += fAscent * iVerScale / 100.0f; |
| current_char_pos.m_Origin.y -= fAscent; |
| |
| if (iHorScale != 100 || iVerScale != 100) { |
| current_char_pos.m_AdjustMatrix[0] = |
| current_char_pos.m_AdjustMatrix[0] * iHorScale / 100.0f; |
| current_char_pos.m_AdjustMatrix[1] = |
| current_char_pos.m_AdjustMatrix[1] * iHorScale / 100.0f; |
| current_char_pos.m_AdjustMatrix[2] = |
| current_char_pos.m_AdjustMatrix[2] * iVerScale / 100.0f; |
| current_char_pos.m_AdjustMatrix[3] = |
| current_char_pos.m_AdjustMatrix[3] * iVerScale / 100.0f; |
| } |
| } |
| if (iWidth > 0) |
| wPrev = wch; |
| } |
| return szCount; |
| } |
