| // 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/fgas_rtfbreak.h" |
| |
| #include <algorithm> |
| |
| #include "core/fxcrt/fx_arabic.h" |
| #include "core/fxcrt/fx_arb.h" |
| #include "third_party/base/stl_util.h" |
| #include "xfa/fgas/font/cfgas_gefont.h" |
| #include "xfa/fgas/layout/fgas_linebreak.h" |
| #include "xfa/fgas/layout/fgas_unicode.h" |
| |
| CFX_RTFBreak::CFX_RTFBreak(uint32_t dwLayoutStyles) |
| : m_iBoundaryStart(0), |
| m_iBoundaryEnd(2000000), |
| m_dwLayoutStyles(dwLayoutStyles), |
| m_bPagination(false), |
| m_pFont(nullptr), |
| m_iFontHeight(240), |
| m_iFontSize(240), |
| m_iTabWidth(720000), |
| m_PositionedTabs(), |
| m_wDefChar(0xFEFF), |
| m_iDefChar(0), |
| m_wLineBreakChar(L'\n'), |
| m_iHorizontalScale(100), |
| m_iVerticalScale(100), |
| m_iCharSpace(0), |
| m_iAlignment(CFX_RTFLineAlignment::Left), |
| m_pUserData(nullptr), |
| m_eCharType(FX_CHARTYPE_Unknown), |
| m_dwIdentity(0), |
| m_RTFLine1(), |
| m_RTFLine2(), |
| m_pCurLine(nullptr), |
| m_iReady(0), |
| m_iTolerance(0) { |
| m_pCurLine = &m_RTFLine1; |
| |
| SetBreakStatus(); |
| m_bPagination = (m_dwLayoutStyles & FX_RTFLAYOUTSTYLE_Pagination) != 0; |
| } |
| |
| CFX_RTFBreak::~CFX_RTFBreak() { |
| Reset(); |
| m_PositionedTabs.RemoveAll(); |
| } |
| |
| void CFX_RTFBreak::SetLineBoundary(FX_FLOAT fLineStart, FX_FLOAT fLineEnd) { |
| if (fLineStart > fLineEnd) |
| return; |
| |
| m_iBoundaryStart = FXSYS_round(fLineStart * 20000.0f); |
| m_iBoundaryEnd = FXSYS_round(fLineEnd * 20000.0f); |
| m_pCurLine->m_iStart = std::min(m_pCurLine->m_iStart, m_iBoundaryEnd); |
| m_pCurLine->m_iStart = std::max(m_pCurLine->m_iStart, m_iBoundaryStart); |
| } |
| |
| void CFX_RTFBreak::SetLineStartPos(FX_FLOAT fLinePos) { |
| int32_t iLinePos = FXSYS_round(fLinePos * 20000.0f); |
| iLinePos = std::min(iLinePos, m_iBoundaryEnd); |
| iLinePos = std::max(iLinePos, m_iBoundaryStart); |
| m_pCurLine->m_iStart = iLinePos; |
| } |
| |
| void CFX_RTFBreak::SetFont(const CFX_RetainPtr<CFGAS_GEFont>& pFont) { |
| if (!pFont || pFont == m_pFont) |
| return; |
| |
| SetBreakStatus(); |
| m_pFont = pFont; |
| m_iDefChar = 0; |
| if (m_pFont) { |
| m_iFontHeight = m_iFontSize; |
| if (m_wDefChar != 0xFEFF) { |
| m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false); |
| m_iDefChar *= m_iFontSize; |
| } |
| } |
| } |
| |
| void CFX_RTFBreak::SetFontSize(FX_FLOAT fFontSize) { |
| int32_t iFontSize = FXSYS_round(fFontSize * 20.0f); |
| if (m_iFontSize == iFontSize) { |
| return; |
| } |
| SetBreakStatus(); |
| m_iFontSize = iFontSize; |
| m_iDefChar = 0; |
| if (m_pFont) { |
| m_iFontHeight = m_iFontSize; |
| if (m_wDefChar != 0xFEFF) { |
| m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false); |
| m_iDefChar *= m_iFontSize; |
| } |
| } |
| } |
| |
| void CFX_RTFBreak::SetTabWidth(FX_FLOAT fTabWidth) { |
| m_iTabWidth = FXSYS_round(fTabWidth * 20000.0f); |
| } |
| |
| void CFX_RTFBreak::AddPositionedTab(FX_FLOAT fTabPos) { |
| int32_t iLineEnd = m_iBoundaryEnd; |
| int32_t iTabPos = FXSYS_round(fTabPos * 20000.0f) + m_iBoundaryStart; |
| if (iTabPos > iLineEnd) |
| iTabPos = iLineEnd; |
| if (m_PositionedTabs.Find(iTabPos, 0) > -1) |
| return; |
| |
| int32_t iCount = m_PositionedTabs.GetSize(); |
| int32_t iFind = 0; |
| for (; iFind < iCount; iFind++) { |
| if (m_PositionedTabs[iFind] > iTabPos) |
| break; |
| } |
| m_PositionedTabs.InsertAt(iFind, iTabPos); |
| } |
| |
| void CFX_RTFBreak::SetLineBreakTolerance(FX_FLOAT fTolerance) { |
| m_iTolerance = FXSYS_round(fTolerance * 20000.0f); |
| } |
| |
| void CFX_RTFBreak::SetHorizontalScale(int32_t iScale) { |
| if (iScale < 0) |
| iScale = 0; |
| if (m_iHorizontalScale == iScale) |
| return; |
| |
| SetBreakStatus(); |
| m_iHorizontalScale = iScale; |
| } |
| |
| void CFX_RTFBreak::SetVerticalScale(int32_t iScale) { |
| if (iScale < 0) |
| iScale = 0; |
| if (m_iVerticalScale == iScale) |
| return; |
| |
| SetBreakStatus(); |
| m_iVerticalScale = iScale; |
| } |
| |
| void CFX_RTFBreak::SetCharSpace(FX_FLOAT fCharSpace) { |
| m_iCharSpace = FXSYS_round(fCharSpace * 20000.0f); |
| } |
| |
| void CFX_RTFBreak::SetUserData(const CFX_RetainPtr<CFX_Retainable>& pUserData) { |
| if (m_pUserData == pUserData) |
| return; |
| |
| SetBreakStatus(); |
| m_pUserData = pUserData; |
| } |
| |
| void CFX_RTFBreak::SetBreakStatus() { |
| m_dwIdentity++; |
| int32_t iCount = m_pCurLine->CountChars(); |
| if (iCount < 1) |
| return; |
| |
| CFX_RTFChar& tc = m_pCurLine->GetChar(iCount - 1); |
| if (tc.m_dwStatus == CFX_RTFBreakType::None) |
| tc.m_dwStatus = CFX_RTFBreakType::Piece; |
| } |
| |
| CFX_RTFChar* CFX_RTFBreak::GetLastChar(int32_t index) const { |
| std::vector<CFX_RTFChar>& tca = m_pCurLine->m_LineChars; |
| int32_t iCount = pdfium::CollectionSize<int32_t>(tca); |
| if (index < 0 || index >= iCount) { |
| return nullptr; |
| } |
| int32_t iStart = iCount - 1; |
| while (iStart > -1) { |
| CFX_RTFChar* pTC = &tca[iStart--]; |
| if (pTC->m_iCharWidth >= 0 || |
| pTC->GetCharType() != FX_CHARTYPE_Combination) { |
| if (--index < 0) { |
| return pTC; |
| } |
| } |
| } |
| return nullptr; |
| } |
| |
| CFX_RTFLine* CFX_RTFBreak::GetRTFLine() const { |
| if (m_iReady == 1) |
| return (CFX_RTFLine*)&m_RTFLine1; |
| if (m_iReady == 2) |
| return (CFX_RTFLine*)&m_RTFLine2; |
| return nullptr; |
| } |
| |
| CFX_RTFPieceArray* CFX_RTFBreak::GetRTFPieces() const { |
| CFX_RTFLine* pRTFLine = GetRTFLine(); |
| return pRTFLine ? &pRTFLine->m_LinePieces : nullptr; |
| } |
| |
| inline FX_CHARTYPE CFX_RTFBreak::GetUnifiedCharType( |
| FX_CHARTYPE chartype) const { |
| return chartype >= FX_CHARTYPE_ArabicAlef ? FX_CHARTYPE_Arabic : chartype; |
| } |
| int32_t CFX_RTFBreak::GetLastPositionedTab() const { |
| int32_t iCount = m_PositionedTabs.GetSize(); |
| if (iCount < 1) { |
| return m_iBoundaryStart; |
| } |
| return m_PositionedTabs[iCount - 1]; |
| } |
| bool CFX_RTFBreak::GetPositionedTab(int32_t& iTabPos) const { |
| int32_t iCount = m_PositionedTabs.GetSize(); |
| for (int32_t i = 0; i < iCount; i++) { |
| if (m_PositionedTabs[i] > iTabPos) { |
| iTabPos = m_PositionedTabs[i]; |
| return true; |
| } |
| } |
| return false; |
| } |
| typedef CFX_RTFBreakType (CFX_RTFBreak::*FX_RTFBreak_LPFAppendChar)( |
| CFX_RTFChar* pCurChar); |
| static const FX_RTFBreak_LPFAppendChar g_FX_RTFBreak_lpfAppendChar[16] = { |
| &CFX_RTFBreak::AppendChar_Others, &CFX_RTFBreak::AppendChar_Tab, |
| &CFX_RTFBreak::AppendChar_Others, &CFX_RTFBreak::AppendChar_Control, |
| &CFX_RTFBreak::AppendChar_Combination, &CFX_RTFBreak::AppendChar_Others, |
| &CFX_RTFBreak::AppendChar_Others, &CFX_RTFBreak::AppendChar_Arabic, |
| &CFX_RTFBreak::AppendChar_Arabic, &CFX_RTFBreak::AppendChar_Arabic, |
| &CFX_RTFBreak::AppendChar_Arabic, &CFX_RTFBreak::AppendChar_Arabic, |
| &CFX_RTFBreak::AppendChar_Arabic, &CFX_RTFBreak::AppendChar_Others, |
| &CFX_RTFBreak::AppendChar_Others, &CFX_RTFBreak::AppendChar_Others, |
| }; |
| |
| CFX_RTFBreakType CFX_RTFBreak::AppendChar(FX_WCHAR wch) { |
| ASSERT(m_pFont && m_pCurLine); |
| |
| uint32_t dwProps = kTextLayoutCodeProperties[(uint16_t)wch]; |
| FX_CHARTYPE chartype = GetCharTypeFromProp(dwProps); |
| m_pCurLine->m_LineChars.emplace_back(); |
| |
| CFX_RTFChar* pCurChar = &m_pCurLine->m_LineChars.back(); |
| pCurChar->m_dwStatus = CFX_RTFBreakType::None; |
| pCurChar->m_wCharCode = wch; |
| pCurChar->m_dwCharProps = dwProps; |
| pCurChar->m_iFontSize = m_iFontSize; |
| pCurChar->m_iFontHeight = m_iFontHeight; |
| 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_RTFBreakType dwRet1 = CFX_RTFBreakType::None; |
| if (chartype != FX_CHARTYPE_Combination && |
| GetUnifiedCharType(m_eCharType) != GetUnifiedCharType(chartype)) { |
| if (m_eCharType != FX_CHARTYPE_Unknown && |
| m_pCurLine->GetLineEnd() > m_iBoundaryEnd + m_iTolerance) { |
| if (m_eCharType != FX_CHARTYPE_Space || chartype != FX_CHARTYPE_Control) { |
| dwRet1 = EndBreak(CFX_RTFBreakType::Line); |
| int32_t iCount = m_pCurLine->CountChars(); |
| if (iCount > 0) { |
| pCurChar = &m_pCurLine->m_LineChars[iCount - 1]; |
| } |
| } |
| } |
| } |
| CFX_RTFBreakType dwRet2 = |
| (this->*g_FX_RTFBreak_lpfAppendChar[chartype >> FX_CHARTYPEBITS])( |
| pCurChar); |
| m_eCharType = chartype; |
| return std::max(dwRet1, dwRet2); |
| } |
| |
| CFX_RTFBreakType CFX_RTFBreak::AppendChar_Combination(CFX_RTFChar* 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_RTFChar* pLastChar = GetLastChar(0); |
| 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; |
| |
| return CFX_RTFBreakType::None; |
| } |
| |
| CFX_RTFBreakType CFX_RTFBreak::AppendChar_Tab(CFX_RTFChar* pCurChar) { |
| if (m_dwLayoutStyles & FX_RTFLAYOUTSTYLE_ExpandTab) { |
| 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; |
| } |
| return CFX_RTFBreakType::None; |
| } |
| |
| CFX_RTFBreakType CFX_RTFBreak::AppendChar_Control(CFX_RTFChar* pCurChar) { |
| CFX_RTFBreakType dwRet2 = CFX_RTFBreakType::None; |
| switch (pCurChar->m_wCharCode) { |
| case L'\v': |
| case 0x2028: |
| dwRet2 = CFX_RTFBreakType::Line; |
| break; |
| case L'\f': |
| dwRet2 = CFX_RTFBreakType::Page; |
| break; |
| case 0x2029: |
| dwRet2 = CFX_RTFBreakType::Paragraph; |
| break; |
| default: |
| if (pCurChar->m_wCharCode == m_wLineBreakChar) { |
| dwRet2 = CFX_RTFBreakType::Paragraph; |
| } |
| break; |
| } |
| if (dwRet2 != CFX_RTFBreakType::None) |
| dwRet2 = EndBreak(dwRet2); |
| |
| return dwRet2; |
| } |
| |
| CFX_RTFBreakType CFX_RTFBreak::AppendChar_Arabic(CFX_RTFChar* pCurChar) { |
| CFX_RTFChar* pLastChar = nullptr; |
| int32_t& iLineWidth = m_pCurLine->m_iWidth; |
| int32_t iCharWidth = 0; |
| FX_WCHAR wForm; |
| bool bAlef = false; |
| if (m_eCharType >= FX_CHARTYPE_ArabicAlef && |
| m_eCharType <= FX_CHARTYPE_ArabicDistortion) { |
| pLastChar = GetLastChar(1); |
| if (pLastChar) { |
| iLineWidth -= pLastChar->m_iCharWidth; |
| CFX_RTFChar* pPrevChar = GetLastChar(2); |
| wForm = pdfium::arabic::GetFormChar(pLastChar, pPrevChar, pCurChar); |
| bAlef = (wForm == 0xFEFF && |
| pLastChar->GetCharType() == FX_CHARTYPE_ArabicAlef); |
| if (!m_pFont->GetCharWidth(wForm, iCharWidth, false)) { |
| if (!m_pFont->GetCharWidth(pLastChar->m_wCharCode, iCharWidth, false)) |
| iCharWidth = m_iDefChar; |
| } |
| |
| iCharWidth *= m_iFontSize; |
| iCharWidth = iCharWidth * m_iHorizontalScale / 100; |
| pLastChar->m_iCharWidth = iCharWidth; |
| iLineWidth += 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; |
| iLineWidth += iCharWidth; |
| m_pCurLine->m_iArabicChars++; |
| if (m_pCurLine->GetLineEnd() > m_iBoundaryEnd + m_iTolerance) { |
| return EndBreak(CFX_RTFBreakType::Line); |
| } |
| return CFX_RTFBreakType::None; |
| } |
| |
| CFX_RTFBreakType CFX_RTFBreak::AppendChar_Others(CFX_RTFChar* pCurChar) { |
| FX_CHARTYPE chartype = pCurChar->GetCharType(); |
| FX_WCHAR wForm; |
| if (chartype == FX_CHARTYPE_Numeric) { |
| wForm = pCurChar->m_wCharCode; |
| } else { |
| 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_iBoundaryEnd + m_iTolerance) { |
| return EndBreak(CFX_RTFBreakType::Line); |
| } |
| return CFX_RTFBreakType::None; |
| } |
| |
| CFX_RTFBreakType CFX_RTFBreak::EndBreak(CFX_RTFBreakType dwStatus) { |
| ASSERT(dwStatus != CFX_RTFBreakType::None); |
| |
| m_dwIdentity++; |
| CFX_RTFPieceArray* pCurPieces = &m_pCurLine->m_LinePieces; |
| int32_t iCount = pCurPieces->GetSize(); |
| if (iCount > 0) { |
| CFX_RTFPiece* pLastPiece = pCurPieces->GetPtrAt(--iCount); |
| if (dwStatus != CFX_RTFBreakType::Piece) |
| pLastPiece->m_dwStatus = dwStatus; |
| else |
| dwStatus = pLastPiece->m_dwStatus; |
| return dwStatus; |
| } |
| |
| CFX_RTFLine* pLastLine = GetRTFLine(); |
| if (pLastLine) { |
| pCurPieces = &pLastLine->m_LinePieces; |
| iCount = pCurPieces->GetSize(); |
| if (iCount-- > 0) { |
| CFX_RTFPiece* pLastPiece = pCurPieces->GetPtrAt(iCount); |
| if (dwStatus != CFX_RTFBreakType::Piece) |
| pLastPiece->m_dwStatus = dwStatus; |
| else |
| dwStatus = pLastPiece->m_dwStatus; |
| return dwStatus; |
| } |
| return CFX_RTFBreakType::None; |
| } |
| |
| iCount = m_pCurLine->CountChars(); |
| if (iCount < 1) |
| return CFX_RTFBreakType::None; |
| |
| CFX_RTFChar& tc = m_pCurLine->GetChar(iCount - 1); |
| tc.m_dwStatus = dwStatus; |
| if (dwStatus == CFX_RTFBreakType::Piece) |
| return dwStatus; |
| |
| m_iReady = (m_pCurLine == &m_RTFLine1) ? 1 : 2; |
| CFX_RTFLine* pNextLine = |
| (m_pCurLine == &m_RTFLine1) ? &m_RTFLine2 : &m_RTFLine1; |
| bool bAllChars = m_iAlignment == CFX_RTFLineAlignment::Justified || |
| m_iAlignment == CFX_RTFLineAlignment::Distributed; |
| CFX_TPOArray tpos(100); |
| if (!EndBreak_SplitLine(pNextLine, bAllChars, dwStatus)) { |
| 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_iBoundaryStart; |
| CFX_RTFChar* pTC = GetLastChar(0); |
| m_eCharType = pTC ? pTC->GetCharType() : FX_CHARTYPE_Unknown; |
| return dwStatus; |
| } |
| |
| bool CFX_RTFBreak::EndBreak_SplitLine(CFX_RTFLine* pNextLine, |
| bool bAllChars, |
| CFX_RTFBreakType dwStatus) { |
| bool bDone = false; |
| if (m_pCurLine->GetLineEnd() > m_iBoundaryEnd + m_iTolerance) { |
| CFX_RTFChar& 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 || m_pCurLine->m_iMBCSChars > 0) { |
| const CFX_RTFChar* pCurChars = m_pCurLine->m_LineChars.data(); |
| const CFX_RTFChar* pTC; |
| CFX_RTFPieceArray* pCurPieces = &m_pCurLine->m_LinePieces; |
| CFX_RTFPiece tp; |
| tp.m_pChars = &m_pCurLine->m_LineChars; |
| bool bNew = true; |
| uint32_t dwIdentity = (uint32_t)-1; |
| int32_t iLast = m_pCurLine->CountChars() - 1, j = 0; |
| for (int32_t i = 0; i <= iLast;) { |
| 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_iFontHeight = pTC->m_iFontHeight; |
| 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; |
| j = i; |
| bNew = false; |
| } |
| if (i == iLast || pTC->m_dwStatus != CFX_RTFBreakType::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++; |
| } |
| pCurPieces->Add(tp); |
| bNew = true; |
| } else { |
| tp.m_iWidth += pTC->m_iCharWidth; |
| i++; |
| } |
| } |
| return true; |
| } |
| if (bAllChars && !bDone) { |
| int32_t iEndPos = m_pCurLine->GetLineEnd(); |
| GetBreakPos(m_pCurLine->m_LineChars, iEndPos, bAllChars, true); |
| } |
| return false; |
| } |
| void CFX_RTFBreak::EndBreak_BidiLine(CFX_TPOArray& tpos, |
| CFX_RTFBreakType dwStatus) { |
| FX_TPO tpo; |
| CFX_RTFPiece tp; |
| CFX_RTFChar* pTC; |
| int32_t i, j; |
| std::vector<CFX_RTFChar>& chars = m_pCurLine->m_LineChars; |
| int32_t iCount = m_pCurLine->CountChars(); |
| bool bDone = (!m_bPagination && m_pCurLine->m_iArabicChars > 0); |
| if (bDone) { |
| int32_t iBidiNum = 0; |
| for (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, 0); |
| } else { |
| for (i = 0; i < iCount; i++) { |
| pTC = &chars[i]; |
| pTC->m_iBidiLevel = 0; |
| pTC->m_iBidiPos = 0; |
| pTC->m_iBidiOrder = 0; |
| } |
| } |
| tp.m_dwStatus = CFX_RTFBreakType::Piece; |
| tp.m_iStartPos = m_pCurLine->m_iStart; |
| tp.m_pChars = &chars; |
| CFX_RTFPieceArray* pCurPieces = &m_pCurLine->m_LinePieces; |
| int32_t iBidiLevel = -1, iCharWidth; |
| uint32_t dwIdentity = (uint32_t)-1; |
| i = j = 0; |
| while (i < iCount) { |
| pTC = &chars[i]; |
| if (iBidiLevel < 0) { |
| iBidiLevel = pTC->m_iBidiLevel; |
| iCharWidth = pTC->m_iCharWidth; |
| if (iCharWidth < 1) { |
| tp.m_iWidth = 0; |
| } else { |
| tp.m_iWidth = iCharWidth; |
| } |
| tp.m_iBidiLevel = iBidiLevel; |
| tp.m_iBidiPos = pTC->m_iBidiOrder; |
| tp.m_iFontSize = pTC->m_iFontSize; |
| tp.m_iFontHeight = pTC->m_iFontHeight; |
| 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; |
| tp.m_dwStatus = CFX_RTFBreakType::Piece; |
| i++; |
| } else if (iBidiLevel != pTC->m_iBidiLevel || |
| pTC->m_dwIdentity != dwIdentity) { |
| tp.m_iChars = i - tp.m_iStartChar; |
| pCurPieces->Add(tp); |
| tp.m_iStartPos += tp.m_iWidth; |
| tp.m_iStartChar = i; |
| tpo.index = j++; |
| tpo.pos = tp.m_iBidiPos; |
| tpos.Add(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; |
| pCurPieces->Add(tp); |
| tpo.index = j; |
| tpo.pos = tp.m_iBidiPos; |
| tpos.Add(tpo); |
| } |
| |
| j = tpos.GetSize() - 1; |
| FX_TEXTLAYOUT_PieceSort(tpos, 0, j); |
| int32_t iStartPos = m_pCurLine->m_iStart; |
| for (i = 0; i <= j; i++) { |
| tpo = tpos.GetAt(i); |
| CFX_RTFPiece& ttp = pCurPieces->GetAt(tpo.index); |
| ttp.m_iStartPos = iStartPos; |
| iStartPos += ttp.m_iWidth; |
| } |
| } |
| |
| void CFX_RTFBreak::EndBreak_Alignment(CFX_TPOArray& tpos, |
| bool bAllChars, |
| CFX_RTFBreakType dwStatus) { |
| CFX_RTFPieceArray* pCurPieces = &m_pCurLine->m_LinePieces; |
| int32_t iNetWidth = m_pCurLine->m_iWidth, iGapChars = 0, iCharWidth; |
| int32_t iCount = pCurPieces->GetSize(); |
| bool bFind = false; |
| uint32_t dwCharType; |
| int32_t i, j; |
| FX_TPO tpo; |
| for (i = iCount - 1; i > -1; i--) { |
| tpo = tpos.GetAt(i); |
| CFX_RTFPiece& ttp = pCurPieces->GetAt(tpo.index); |
| if (!bFind) { |
| iNetWidth = ttp.GetEndPos(); |
| } |
| bool bArabic = FX_IsOdd(ttp.m_iBidiLevel); |
| j = bArabic ? 0 : ttp.m_iChars - 1; |
| while (j > -1 && j < ttp.m_iChars) { |
| const CFX_RTFChar& tc = ttp.GetChar(j); |
| if (tc.m_nBreakType == FX_LBT_DIRECT_BRK) { |
| iGapChars++; |
| } |
| if (!bFind || !bAllChars) { |
| dwCharType = tc.GetCharType(); |
| if (dwCharType == FX_CHARTYPE_Space || |
| dwCharType == FX_CHARTYPE_Control) { |
| if (!bFind) { |
| 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_iBoundaryEnd - iNetWidth; |
| if (iGapChars > 0 && (m_iAlignment == CFX_RTFLineAlignment::Distributed || |
| (m_iAlignment == CFX_RTFLineAlignment::Justified && |
| dwStatus != CFX_RTFBreakType::Paragraph))) { |
| int32_t iStart = -1; |
| for (i = 0; i < iCount; i++) { |
| tpo = tpos.GetAt(i); |
| CFX_RTFPiece& ttp = pCurPieces->GetAt(tpo.index); |
| if (iStart < 0) { |
| iStart = ttp.m_iStartPos; |
| } else { |
| ttp.m_iStartPos = iStart; |
| } |
| int32_t k; |
| for (j = 0; j < ttp.m_iChars; j++) { |
| CFX_RTFChar& tc = ttp.GetChar(j); |
| if (tc.m_nBreakType != FX_LBT_DIRECT_BRK || tc.m_iCharWidth < 0) { |
| continue; |
| } |
| 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 (i = 0; i < iCount; i++) { |
| CFX_RTFPiece& ttp = pCurPieces->GetAt(i); |
| ttp.m_iStartPos += iOffset; |
| } |
| } |
| } |
| } |
| |
| int32_t CFX_RTFBreak::GetBreakPos(std::vector<CFX_RTFChar>& 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_iBoundaryEnd) { |
| if (!bAllChars) |
| return iLength; |
| |
| iBreak = iLength; |
| iBreakPos = iEndPos; |
| } |
| |
| CFX_RTFChar* pCharArray = tca.data(); |
| CFX_RTFChar* pCur = pCharArray + 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_SP) { |
| bNeedBreak = true; |
| eType = nNext == FX_CBP_SP ? FX_LBT_PROHIBITED_BRK |
| : gs_FX_LineBreak_PairTable[nCur][nNext]; |
| } else if (nCur == FX_CBP_TB) { |
| bNeedBreak = true; |
| eType = nNext == FX_CBP_TB ? FX_LBT_PROHIBITED_BRK |
| : gs_FX_LineBreak_PairTable[nCur][nNext]; |
| } else { |
| 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_iBoundaryEnd || 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_RTFLine* pCurLine, |
| CFX_RTFLine* pNextLine, |
| bool bAllChars) { |
| ASSERT(pCurLine && pNextLine); |
| int32_t iCount = pCurLine->CountChars(); |
| if (iCount < 2) { |
| return; |
| } |
| int32_t iEndPos = pCurLine->GetLineEnd(); |
| std::vector<CFX_RTFChar>& curChars = pCurLine->m_LineChars; |
| int32_t iCharPos = GetBreakPos(curChars, iEndPos, bAllChars, false); |
| if (iCharPos < 0) { |
| iCharPos = 0; |
| } |
| iCharPos++; |
| if (iCharPos >= iCount) { |
| pNextLine->RemoveAll(true); |
| CFX_Char* pTC = &curChars[iCharPos - 1]; |
| pTC->m_nBreakType = FX_LBT_UNKNOWN; |
| return; |
| } |
| std::vector<CFX_RTFChar>& nextChars = pNextLine->m_LineChars; |
| nextChars = |
| std::vector<CFX_RTFChar>(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; |
| iCount = pdfium::CollectionSize<int>(nextChars); |
| CFX_RTFChar* pNextChars = nextChars.data(); |
| for (int32_t i = 0; i < iCount; i++) { |
| CFX_RTFChar* tc = pNextChars + i; |
| if (tc->GetCharType() >= FX_CHARTYPE_ArabicAlef) { |
| pCurLine->m_iArabicChars--; |
| pNextLine->m_iArabicChars++; |
| } |
| tc->m_dwStatus = CFX_RTFBreakType::None; |
| } |
| } |
| |
| int32_t CFX_RTFBreak::CountBreakPieces() const { |
| CFX_RTFPieceArray* pRTFPieces = GetRTFPieces(); |
| return pRTFPieces ? pRTFPieces->GetSize() : 0; |
| } |
| |
| const CFX_RTFPiece* CFX_RTFBreak::GetBreakPiece(int32_t index) const { |
| CFX_RTFPieceArray* pRTFPieces = GetRTFPieces(); |
| if (!pRTFPieces) |
| return nullptr; |
| |
| if (index < 0 || index >= pRTFPieces->GetSize()) |
| return nullptr; |
| |
| return pRTFPieces->GetPtrAt(index); |
| } |
| |
| void CFX_RTFBreak::GetLineRect(CFX_RectF& rect) const { |
| rect.top = 0; |
| CFX_RTFLine* pRTFLine = GetRTFLine(); |
| if (!pRTFLine) { |
| rect.left = ((FX_FLOAT)m_iBoundaryStart) / 20000.0f; |
| rect.width = rect.height = 0; |
| return; |
| } |
| rect.left = ((FX_FLOAT)pRTFLine->m_iStart) / 20000.0f; |
| rect.width = ((FX_FLOAT)pRTFLine->m_iWidth) / 20000.0f; |
| CFX_RTFPieceArray& rtfPieces = pRTFLine->m_LinePieces; |
| int32_t iCount = rtfPieces.GetSize(); |
| if (iCount < 1) { |
| rect.width = 0; |
| return; |
| } |
| CFX_RTFPiece* pBreakPiece; |
| int32_t iLineHeight = 0, iMax; |
| for (int32_t i = 0; i < iCount; i++) { |
| pBreakPiece = rtfPieces.GetPtrAt(i); |
| int32_t iFontHeight = FXSYS_round(pBreakPiece->m_iFontHeight * |
| pBreakPiece->m_iVerticalScale / 100.0f); |
| iMax = std::max(pBreakPiece->m_iFontSize, iFontHeight); |
| if (i == 0) { |
| iLineHeight = iMax; |
| } else if (iLineHeight < iMax) { |
| iLineHeight = iMax; |
| } |
| } |
| rect.height = ((FX_FLOAT)iLineHeight) / 20.0f; |
| } |
| void CFX_RTFBreak::ClearBreakPieces() { |
| CFX_RTFLine* pRTFLine = GetRTFLine(); |
| if (pRTFLine) { |
| pRTFLine->RemoveAll(true); |
| } |
| m_iReady = 0; |
| } |
| void CFX_RTFBreak::Reset() { |
| m_eCharType = FX_CHARTYPE_Unknown; |
| m_RTFLine1.RemoveAll(true); |
| m_RTFLine2.RemoveAll(true); |
| } |
| int32_t CFX_RTFBreak::GetDisplayPos(const FX_RTFTEXTOBJ* pText, |
| FXTEXT_CHARPOS* pCharPos, |
| bool bCharCode, |
| CFX_WideString* pWSForms, |
| FX_AdjustCharDisplayPos pAdjustPos) const { |
| if (!pText || pText->iLength < 1) { |
| return 0; |
| } |
| ASSERT(pText->pStr && pText->pWidths && pText->pFont && pText->pRect); |
| const FX_WCHAR* pStr = pText->pStr; |
| int32_t* pWidths = pText->pWidths; |
| int32_t iLength = pText->iLength - 1; |
| CFX_RetainPtr<CFGAS_GEFont> pFont = pText->pFont; |
| CFX_RectF rtText(*pText->pRect); |
| bool bRTLPiece = FX_IsOdd(pText->iBidiLevel); |
| FX_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; |
| FX_FLOAT fFontHeight = fFontSize; |
| FX_FLOAT fAscent = fFontHeight * (FX_FLOAT)iAscent / (FX_FLOAT)iMaxHeight; |
| FX_WCHAR wch, wPrev = 0xFEFF, wNext, wForm; |
| int32_t iWidth, iCharWidth, iCharHeight; |
| FX_FLOAT fX, fY, fCharWidth, fCharHeight; |
| int32_t iHorScale = pText->iHorizontalScale; |
| int32_t iVerScale = pText->iVerticalScale; |
| bool bEmptyChar; |
| uint32_t dwProps, dwCharType; |
| fX = rtText.left; |
| fY = rtText.top; |
| if (bRTLPiece) |
| fX = rtText.right(); |
| |
| fY += fAscent; |
| int32_t iCount = 0; |
| for (int32_t i = 0; i <= iLength; i++) { |
| wch = *pStr++; |
| iWidth = *pWidths++; |
| dwProps = FX_GetUnicodeProperties(wch); |
| dwCharType = (dwProps & FX_CHARTYPEBITSMASK); |
| if (dwCharType == FX_CHARTYPE_ArabicAlef && iWidth == 0) { |
| wPrev = 0xFEFF; |
| continue; |
| } |
| if (iWidth != 0) { |
| iCharWidth = iWidth; |
| if (iCharWidth < 0) |
| iCharWidth = -iCharWidth; |
| |
| bEmptyChar = |
| (dwCharType >= FX_CHARTYPE_Tab && dwCharType <= FX_CHARTYPE_Control); |
| if (!bEmptyChar) |
| iCount++; |
| |
| if (pCharPos) { |
| iCharWidth /= iFontSize; |
| wForm = wch; |
| if (dwCharType >= FX_CHARTYPE_ArabicAlef) { |
| if (i < iLength) { |
| wNext = *pStr; |
| if (*pWidths < 0) { |
| if (i + 1 < iLength) { |
| wNext = pStr[1]; |
| } |
| } |
| } 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; |
| if (pWSForms) { |
| *pWSForms += wForm; |
| } |
| } |
| iCharHeight = 1000; |
| |
| fCharWidth = fFontSize * iCharWidth / 1000.0f; |
| fCharHeight = fFontSize * iCharHeight / 1000.0f; |
| if (bRTLPiece && dwCharType != FX_CHARTYPE_Combination) |
| fX -= fCharWidth; |
| |
| if (!bEmptyChar) { |
| CFX_PointF ptOffset; |
| bool bAdjusted = false; |
| if (pAdjustPos) { |
| bAdjusted = |
| pAdjustPos(wForm, false, pFont, fFontSize, false, ptOffset); |
| } |
| pCharPos->m_Origin = CFX_PointF(fX + ptOffset.x, fY - ptOffset.y); |
| } |
| 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; |
| } |
| |
| CFX_RTFPiece::CFX_RTFPiece() |
| : m_dwStatus(CFX_RTFBreakType::Piece), |
| m_iStartPos(0), |
| m_iWidth(-1), |
| m_iStartChar(0), |
| m_iChars(0), |
| m_iBidiLevel(0), |
| m_iBidiPos(0), |
| m_iFontSize(0), |
| m_iFontHeight(0), |
| m_iHorizontalScale(100), |
| m_iVerticalScale(100), |
| m_dwIdentity(0), |
| m_pChars(nullptr), |
| m_pUserData(nullptr) {} |
| |
| CFX_RTFPiece::~CFX_RTFPiece() { |
| Reset(); |
| } |
| |
| CFX_RTFLine::CFX_RTFLine() |
| : m_LinePieces(16), |
| m_iStart(0), |
| m_iWidth(0), |
| m_iArabicChars(0), |
| m_iMBCSChars(0) {} |
| |
| CFX_RTFLine::~CFX_RTFLine() { |
| RemoveAll(); |
| } |
| |
| FX_RTFTEXTOBJ::FX_RTFTEXTOBJ() |
| : pStr(nullptr), |
| pWidths(nullptr), |
| iLength(0), |
| pFont(nullptr), |
| fFontSize(12.0f), |
| iBidiLevel(0), |
| pRect(nullptr), |
| wLineBreakChar(L'\n'), |
| iHorizontalScale(100), |
| iVerticalScale(100) {} |
| |
| FX_RTFTEXTOBJ::~FX_RTFTEXTOBJ() {} |
