| // 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_textbreak.h" |
| |
| #include <algorithm> |
| |
| #include "core/fxcrt/fx_arabic.h" |
| #include "core/fxcrt/fx_memory.h" |
| #include "third_party/base/ptr_util.h" |
| #include "xfa/fgas/font/cfgas_gefont.h" |
| #include "xfa/fgas/layout/fgas_linebreak.h" |
| |
| namespace { |
| |
| typedef uint32_t (CFX_TxtBreak::*FX_TxtBreak_LPFAppendChar)( |
| CFX_TxtChar* pCurChar, |
| int32_t iRotation); |
| const FX_TxtBreak_LPFAppendChar g_FX_TxtBreak_lpfAppendChar[16] = { |
| &CFX_TxtBreak::AppendChar_Others, &CFX_TxtBreak::AppendChar_Tab, |
| &CFX_TxtBreak::AppendChar_Others, &CFX_TxtBreak::AppendChar_Control, |
| &CFX_TxtBreak::AppendChar_Combination, &CFX_TxtBreak::AppendChar_Others, |
| &CFX_TxtBreak::AppendChar_Others, &CFX_TxtBreak::AppendChar_Arabic, |
| &CFX_TxtBreak::AppendChar_Arabic, &CFX_TxtBreak::AppendChar_Arabic, |
| &CFX_TxtBreak::AppendChar_Arabic, &CFX_TxtBreak::AppendChar_Arabic, |
| &CFX_TxtBreak::AppendChar_Arabic, &CFX_TxtBreak::AppendChar_Others, |
| &CFX_TxtBreak::AppendChar_Others, &CFX_TxtBreak::AppendChar_Others, |
| }; |
| |
| bool IsCtrlCode(FX_WCHAR ch) { |
| uint32_t dwRet = (FX_GetUnicodeProperties(ch) & FX_CHARTYPEBITSMASK); |
| return dwRet == FX_CHARTYPE_Tab || dwRet == FX_CHARTYPE_Control; |
| } |
| |
| } // namespace |
| |
| CFX_TxtBreak::CFX_TxtBreak() |
| : m_iLineWidth(2000000), |
| m_dwLayoutStyles(0), |
| m_bVertical(false), |
| m_bArabicContext(false), |
| m_bArabicShapes(false), |
| m_bRTL(false), |
| m_bSingleLine(false), |
| m_bCombText(false), |
| m_iArabicContext(1), |
| m_iCurArabicContext(1), |
| m_pFont(nullptr), |
| m_iFontSize(240), |
| m_bEquidistant(true), |
| m_iTabWidth(720000), |
| m_wDefChar(0xFEFF), |
| m_wParagBreakChar(L'\n'), |
| m_iDefChar(0), |
| m_iLineRotation(0), |
| m_iCharRotation(0), |
| m_iRotation(0), |
| m_iAlignment(FX_TXTLINEALIGNMENT_Left), |
| m_dwContextCharStyles(0), |
| m_iCombWidth(360000), |
| m_pUserData(nullptr), |
| m_eCharType(FX_CHARTYPE_Unknown), |
| m_bArabicNumber(false), |
| m_bArabicComma(false), |
| m_pCurLine(nullptr), |
| m_iReady(0), |
| m_iTolerance(0), |
| m_iHorScale(100), |
| m_iCharSpace(0) { |
| m_pCurLine = &m_TxtLine1; |
| ResetArabicContext(); |
| } |
| |
| CFX_TxtBreak::~CFX_TxtBreak() { |
| Reset(); |
| } |
| |
| void CFX_TxtBreak::SetLineWidth(FX_FLOAT fLineWidth) { |
| m_iLineWidth = FXSYS_round(fLineWidth * 20000.0f); |
| ASSERT(m_iLineWidth >= 20000); |
| } |
| |
| void CFX_TxtBreak::SetLinePos(FX_FLOAT fLinePos) { |
| int32_t iLinePos = |
| std::min(std::max(FXSYS_round(fLinePos * 20000.0f), 0), m_iLineWidth); |
| m_pCurLine->m_iStart = iLinePos; |
| m_pCurLine->m_iWidth += iLinePos; |
| } |
| |
| void CFX_TxtBreak::SetLayoutStyles(uint32_t dwLayoutStyles) { |
| m_dwLayoutStyles = dwLayoutStyles; |
| m_bVertical = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_VerticalChars) != 0; |
| m_bArabicContext = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_ArabicContext) != 0; |
| m_bArabicShapes = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_ArabicShapes) != 0; |
| m_bRTL = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_RTLReadingOrder) != 0; |
| m_bSingleLine = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_SingleLine) != 0; |
| m_bCombText = (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_CombText) != 0; |
| ResetArabicContext(); |
| m_iLineRotation = GetLineRotation(m_dwLayoutStyles); |
| m_iRotation = m_iLineRotation + m_iCharRotation; |
| m_iRotation %= 4; |
| } |
| |
| void CFX_TxtBreak::SetFont(const CFX_RetainPtr<CFGAS_GEFont>& pFont) { |
| if (!pFont || pFont == m_pFont) |
| return; |
| |
| SetBreakStatus(); |
| m_pFont = pFont; |
| FontChanged(); |
| } |
| |
| void CFX_TxtBreak::SetFontSize(FX_FLOAT fFontSize) { |
| int32_t iFontSize = FXSYS_round(fFontSize * 20.0f); |
| if (m_iFontSize == iFontSize) |
| return; |
| |
| SetBreakStatus(); |
| m_iFontSize = iFontSize; |
| FontChanged(); |
| } |
| |
| void CFX_TxtBreak::FontChanged() { |
| m_iDefChar = 0; |
| if (m_wDefChar == 0xFEFF || !m_pFont) |
| return; |
| |
| m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false); |
| m_iDefChar *= m_iFontSize; |
| } |
| |
| void CFX_TxtBreak::SetTabWidth(FX_FLOAT fTabWidth, bool bEquidistant) { |
| m_iTabWidth = FXSYS_round(fTabWidth * 20000.0f); |
| if (m_iTabWidth < FX_TXTBREAK_MinimumTabWidth) |
| m_iTabWidth = FX_TXTBREAK_MinimumTabWidth; |
| |
| m_bEquidistant = bEquidistant; |
| } |
| |
| void CFX_TxtBreak::SetDefaultChar(FX_WCHAR wch) { |
| m_wDefChar = wch; |
| m_iDefChar = 0; |
| if (m_wDefChar == 0xFEFF || !m_pFont) |
| return; |
| |
| m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false); |
| if (m_iDefChar < 0) |
| m_iDefChar = 0; |
| else |
| m_iDefChar *= m_iFontSize; |
| } |
| |
| void CFX_TxtBreak::SetParagraphBreakChar(FX_WCHAR wch) { |
| if (wch != L'\r' && wch != L'\n') |
| return; |
| m_wParagBreakChar = wch; |
| } |
| |
| void CFX_TxtBreak::SetLineBreakTolerance(FX_FLOAT fTolerance) { |
| m_iTolerance = FXSYS_round(fTolerance * 20000.0f); |
| } |
| |
| void CFX_TxtBreak::SetCharRotation(int32_t iCharRotation) { |
| if (iCharRotation < 0) |
| iCharRotation += (-iCharRotation / 4 + 1) * 4; |
| else if (iCharRotation > 3) |
| iCharRotation -= (iCharRotation / 4) * 4; |
| |
| if (m_iCharRotation == iCharRotation) |
| return; |
| |
| SetBreakStatus(); |
| m_iCharRotation = iCharRotation; |
| m_iRotation = m_iLineRotation + m_iCharRotation; |
| m_iRotation %= 4; |
| } |
| |
| void CFX_TxtBreak::SetAlignment(int32_t iAlignment) { |
| ASSERT(iAlignment >= FX_TXTLINEALIGNMENT_Left && |
| iAlignment <= FX_TXTLINEALIGNMENT_Distributed); |
| m_iAlignment = iAlignment; |
| ResetArabicContext(); |
| } |
| |
| void CFX_TxtBreak::ResetContextCharStyles() { |
| m_dwContextCharStyles = m_bArabicContext ? m_iCurAlignment : m_iAlignment; |
| if (m_bArabicNumber) |
| m_dwContextCharStyles |= FX_TXTCHARSTYLE_ArabicNumber; |
| if (m_bArabicComma) |
| m_dwContextCharStyles |= FX_TXTCHARSTYLE_ArabicComma; |
| if ((m_bArabicContext && m_bCurRTL) || (!m_bArabicContext && m_bRTL)) |
| m_dwContextCharStyles |= FX_TXTCHARSTYLE_RTLReadingOrder; |
| m_dwContextCharStyles |= (m_iArabicContext << 8); |
| } |
| |
| void CFX_TxtBreak::SetCombWidth(FX_FLOAT fCombWidth) { |
| m_iCombWidth = FXSYS_round(fCombWidth * 20000.0f); |
| } |
| |
| void CFX_TxtBreak::SetUserData(void* pUserData) { |
| if (m_pUserData == pUserData) |
| return; |
| |
| SetBreakStatus(); |
| m_pUserData = pUserData; |
| } |
| |
| void CFX_TxtBreak::SetBreakStatus() { |
| int32_t iCount = m_pCurLine->CountChars(); |
| if (iCount < 1) |
| return; |
| |
| CFX_TxtChar* pTC = m_pCurLine->GetCharPtr(iCount - 1); |
| if (pTC->m_dwStatus == 0) |
| pTC->m_dwStatus = FX_TXTBREAK_PieceBreak; |
| } |
| |
| void CFX_TxtBreak::SetHorizontalScale(int32_t iScale) { |
| if (iScale < 0) |
| iScale = 0; |
| if (iScale == m_iHorScale) |
| return; |
| |
| SetBreakStatus(); |
| m_iHorScale = iScale; |
| } |
| |
| void CFX_TxtBreak::SetCharSpace(FX_FLOAT fCharSpace) { |
| m_iCharSpace = FXSYS_round(fCharSpace * 20000.0f); |
| } |
| |
| static const int32_t gs_FX_TxtLineRotations[8] = {0, 3, 1, 0, 2, 1, 3, 2}; |
| |
| int32_t CFX_TxtBreak::GetLineRotation(uint32_t dwStyles) const { |
| return gs_FX_TxtLineRotations[(dwStyles & 0x0E) >> 1]; |
| } |
| |
| CFX_TxtChar* CFX_TxtBreak::GetLastChar(int32_t index, bool bOmitChar) const { |
| std::vector<CFX_TxtChar>& ca = m_pCurLine->m_LineChars; |
| int32_t iCount = pdfium::CollectionSize<int32_t>(ca); |
| if (index < 0 || index >= iCount) |
| return nullptr; |
| |
| int32_t iStart = iCount - 1; |
| while (iStart > -1) { |
| CFX_TxtChar* pTC = &ca[iStart--]; |
| if (bOmitChar && pTC->GetCharType() == FX_CHARTYPE_Combination) |
| continue; |
| if (--index < 0) |
| return pTC; |
| } |
| return nullptr; |
| } |
| |
| const CFX_TxtLine* CFX_TxtBreak::GetTxtLine() const { |
| if (m_iReady == 1) |
| return &m_TxtLine1; |
| if (m_iReady == 2) |
| return &m_TxtLine2; |
| return nullptr; |
| } |
| |
| const CFX_TxtPieceArray* CFX_TxtBreak::GetTxtPieces() const { |
| const CFX_TxtLine* pTxtLine = GetTxtLine(); |
| return pTxtLine ? &pTxtLine->m_LinePieces : nullptr; |
| } |
| |
| inline FX_CHARTYPE CFX_TxtBreak::GetUnifiedCharType( |
| FX_CHARTYPE chartype) const { |
| return chartype >= FX_CHARTYPE_ArabicAlef ? FX_CHARTYPE_Arabic : chartype; |
| } |
| |
| void CFX_TxtBreak::ResetArabicContext() { |
| if (m_bArabicContext) { |
| m_bCurRTL = m_iCurArabicContext > 1; |
| m_iCurAlignment = m_iCurArabicContext > 1 ? FX_TXTLINEALIGNMENT_Right |
| : FX_TXTLINEALIGNMENT_Left; |
| m_iCurAlignment |= (m_iAlignment & FX_TXTLINEALIGNMENT_HigherMask); |
| m_bArabicNumber = m_iArabicContext >= 1 && m_bArabicShapes; |
| } else { |
| m_bCurRTL = m_bRTL; |
| m_iCurAlignment = m_iAlignment; |
| if (m_bRTL) |
| m_bArabicNumber = m_iArabicContext >= 1; |
| else |
| m_bArabicNumber = m_iArabicContext > 1; |
| m_bArabicNumber = m_bArabicNumber && m_bArabicShapes; |
| } |
| m_bArabicComma = m_bArabicNumber; |
| ResetContextCharStyles(); |
| } |
| |
| void CFX_TxtBreak::AppendChar_PageLoad(CFX_TxtChar* pCurChar, |
| uint32_t dwProps) { |
| pCurChar->m_dwStatus = 0; |
| pCurChar->m_pUserData = m_pUserData; |
| |
| if (m_bArabicContext || m_bArabicShapes) { |
| int32_t iBidiCls = (dwProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS; |
| int32_t iArabicContext = |
| (iBidiCls == FX_BIDICLASS_R || iBidiCls == FX_BIDICLASS_AL) |
| ? 2 |
| : ((iBidiCls == FX_BIDICLASS_L || iBidiCls == FX_BIDICLASS_S) ? 0 |
| : 1); |
| if (iArabicContext != m_iArabicContext && iArabicContext != 1) { |
| m_iArabicContext = iArabicContext; |
| if (m_iCurArabicContext == 1) |
| m_iCurArabicContext = iArabicContext; |
| |
| ResetArabicContext(); |
| CFX_TxtChar* pLastChar = GetLastChar(1, false); |
| if (pLastChar && pLastChar->m_dwStatus < 1) |
| pLastChar->m_dwStatus = FX_TXTBREAK_PieceBreak; |
| } |
| } |
| pCurChar->m_dwCharStyles = m_dwContextCharStyles; |
| } |
| |
| uint32_t CFX_TxtBreak::AppendChar_Combination(CFX_TxtChar* pCurChar, |
| int32_t iRotation) { |
| FX_WCHAR wch = pCurChar->m_wCharCode; |
| FX_WCHAR wForm; |
| int32_t iCharWidth = 0; |
| pCurChar->m_iCharWidth = -1; |
| if (m_bCombText) { |
| iCharWidth = m_iCombWidth; |
| } else { |
| if (m_bVertical != FX_IsOdd(iRotation)) { |
| iCharWidth = 1000; |
| } else { |
| wForm = wch; |
| CFX_TxtChar* pLastChar = GetLastChar(0, false); |
| if (pLastChar && |
| (pLastChar->m_dwCharStyles & FX_TXTCHARSTYLE_ArabicShadda) == 0) { |
| bool bShadda = false; |
| if (wch == 0x0651) { |
| FX_WCHAR wLast = pLastChar->m_wCharCode; |
| if (wLast >= 0x064C && wLast <= 0x0650) { |
| wForm = FX_GetArabicFromShaddaTable(wLast); |
| bShadda = true; |
| } |
| } else if (wch >= 0x064C && wch <= 0x0650) { |
| if (pLastChar->m_wCharCode == 0x0651) { |
| wForm = FX_GetArabicFromShaddaTable(wch); |
| bShadda = true; |
| } |
| } |
| if (bShadda) { |
| pLastChar->m_dwCharStyles |= FX_TXTCHARSTYLE_ArabicShadda; |
| pLastChar->m_iCharWidth = 0; |
| pCurChar->m_dwCharStyles |= FX_TXTCHARSTYLE_ArabicShadda; |
| } |
| } |
| if (!m_pFont->GetCharWidth(wForm, iCharWidth, false)) |
| iCharWidth = 0; |
| } |
| iCharWidth *= m_iFontSize; |
| iCharWidth = iCharWidth * m_iHorScale / 100; |
| } |
| pCurChar->m_iCharWidth = -iCharWidth; |
| return FX_TXTBREAK_None; |
| } |
| |
| uint32_t CFX_TxtBreak::AppendChar_Tab(CFX_TxtChar* pCurChar, |
| int32_t iRotation) { |
| m_eCharType = FX_CHARTYPE_Tab; |
| if ((m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_ExpandTab) == 0) |
| return FX_TXTBREAK_None; |
| |
| int32_t& iLineWidth = m_pCurLine->m_iWidth; |
| int32_t iCharWidth; |
| if (m_bCombText) { |
| iCharWidth = m_iCombWidth; |
| } else { |
| if (m_bEquidistant) { |
| iCharWidth = iLineWidth; |
| iCharWidth = m_iTabWidth * (iCharWidth / m_iTabWidth + 1) - iCharWidth; |
| if (iCharWidth < FX_TXTBREAK_MinimumTabWidth) |
| iCharWidth += m_iTabWidth; |
| } else { |
| iCharWidth = m_iTabWidth; |
| } |
| } |
| |
| pCurChar->m_iCharWidth = iCharWidth; |
| iLineWidth += iCharWidth; |
| if (!m_bSingleLine && iLineWidth >= m_iLineWidth + m_iTolerance) |
| return EndBreak(FX_TXTBREAK_LineBreak); |
| |
| return FX_TXTBREAK_None; |
| } |
| |
| uint32_t CFX_TxtBreak::AppendChar_Control(CFX_TxtChar* pCurChar, |
| int32_t iRotation) { |
| m_eCharType = FX_CHARTYPE_Control; |
| uint32_t dwRet = FX_TXTBREAK_None; |
| if (!m_bSingleLine) { |
| FX_WCHAR wch = pCurChar->m_wCharCode; |
| switch (wch) { |
| case L'\v': |
| case 0x2028: |
| dwRet = FX_TXTBREAK_LineBreak; |
| break; |
| case L'\f': |
| dwRet = FX_TXTBREAK_PageBreak; |
| break; |
| case 0x2029: |
| dwRet = FX_TXTBREAK_ParagraphBreak; |
| break; |
| default: |
| if (wch == m_wParagBreakChar) |
| dwRet = FX_TXTBREAK_ParagraphBreak; |
| break; |
| } |
| if (dwRet != FX_TXTBREAK_None) |
| dwRet = EndBreak(dwRet); |
| } |
| return dwRet; |
| } |
| |
| uint32_t CFX_TxtBreak::AppendChar_Arabic(CFX_TxtChar* pCurChar, |
| int32_t iRotation) { |
| FX_CHARTYPE chartype = pCurChar->GetCharType(); |
| int32_t& iLineWidth = m_pCurLine->m_iWidth; |
| FX_WCHAR wForm; |
| int32_t iCharWidth = 0; |
| CFX_TxtChar* pLastChar = nullptr; |
| bool bAlef = false; |
| if (!m_bCombText && m_eCharType >= FX_CHARTYPE_ArabicAlef && |
| m_eCharType <= FX_CHARTYPE_ArabicDistortion) { |
| pLastChar = GetLastChar(1); |
| if (pLastChar) { |
| iCharWidth = pLastChar->m_iCharWidth; |
| if (iCharWidth > 0) |
| iLineWidth -= iCharWidth; |
| |
| CFX_Char* pPrevChar = GetLastChar(2); |
| wForm = pdfium::arabic::GetFormChar(pLastChar, pPrevChar, pCurChar); |
| bAlef = (wForm == 0xFEFF && |
| pLastChar->GetCharType() == FX_CHARTYPE_ArabicAlef); |
| int32_t iLastRotation = pLastChar->m_nRotation + m_iLineRotation; |
| if (m_bVertical && (pLastChar->m_dwCharProps & 0x8000) != 0) |
| iLastRotation++; |
| if (m_bVertical != FX_IsOdd(iLastRotation)) |
| iCharWidth = 1000; |
| else |
| m_pFont->GetCharWidth(wForm, iCharWidth, false); |
| |
| if (wForm == 0xFEFF) |
| iCharWidth = m_iDefChar; |
| |
| iCharWidth *= m_iFontSize; |
| iCharWidth = iCharWidth * m_iHorScale / 100; |
| pLastChar->m_iCharWidth = iCharWidth; |
| iLineWidth += iCharWidth; |
| iCharWidth = 0; |
| } |
| } |
| |
| m_eCharType = chartype; |
| wForm = pdfium::arabic::GetFormChar(pCurChar, bAlef ? nullptr : pLastChar, |
| nullptr); |
| if (m_bCombText) { |
| iCharWidth = m_iCombWidth; |
| } else { |
| if (m_bVertical != FX_IsOdd(iRotation)) |
| iCharWidth = 1000; |
| else |
| m_pFont->GetCharWidth(wForm, iCharWidth, false); |
| |
| if (wForm == 0xFEFF) |
| iCharWidth = m_iDefChar; |
| |
| iCharWidth *= m_iFontSize; |
| iCharWidth = iCharWidth * m_iHorScale / 100; |
| } |
| pCurChar->m_iCharWidth = iCharWidth; |
| iLineWidth += iCharWidth; |
| m_pCurLine->m_iArabicChars++; |
| if (!m_bSingleLine && iLineWidth > m_iLineWidth + m_iTolerance) |
| return EndBreak(FX_TXTBREAK_LineBreak); |
| return FX_TXTBREAK_None; |
| } |
| |
| uint32_t CFX_TxtBreak::AppendChar_Others(CFX_TxtChar* pCurChar, |
| int32_t iRotation) { |
| uint32_t dwProps = pCurChar->m_dwCharProps; |
| FX_CHARTYPE chartype = pCurChar->GetCharType(); |
| int32_t& iLineWidth = m_pCurLine->m_iWidth; |
| int32_t iCharWidth = 0; |
| m_eCharType = chartype; |
| FX_WCHAR wch = pCurChar->m_wCharCode; |
| FX_WCHAR wForm = wch; |
| if (chartype == FX_CHARTYPE_Numeric) { |
| if (m_bArabicNumber) { |
| wForm = wch + 0x0630; |
| pCurChar->m_dwCharStyles |= FX_TXTCHARSTYLE_ArabicIndic; |
| } |
| } else if (wch == L',') { |
| if (m_bArabicShapes && m_iCurArabicContext > 0) { |
| wForm = 0x060C; |
| pCurChar->m_dwCharStyles |= FX_TXTCHARSTYLE_ArabicComma; |
| } |
| } else if (m_bCurRTL || m_bVertical) { |
| wForm = FX_GetMirrorChar(wch, dwProps, m_bCurRTL, m_bVertical); |
| } |
| |
| if (m_bCombText) { |
| iCharWidth = m_iCombWidth; |
| } else { |
| if (m_bVertical != FX_IsOdd(iRotation)) |
| iCharWidth = 1000; |
| else if (!m_pFont->GetCharWidth(wForm, iCharWidth, false)) |
| iCharWidth = m_iDefChar; |
| |
| iCharWidth *= m_iFontSize; |
| iCharWidth = iCharWidth * m_iHorScale / 100; |
| } |
| |
| iCharWidth += m_iCharSpace; |
| pCurChar->m_iCharWidth = iCharWidth; |
| iLineWidth += iCharWidth; |
| if (!m_bSingleLine && chartype != FX_CHARTYPE_Space && |
| iLineWidth > m_iLineWidth + m_iTolerance) { |
| return EndBreak(FX_TXTBREAK_LineBreak); |
| } |
| |
| return FX_TXTBREAK_None; |
| } |
| |
| uint32_t CFX_TxtBreak::AppendChar(FX_WCHAR wch) { |
| uint32_t dwProps = kTextLayoutCodeProperties[static_cast<uint16_t>(wch)]; |
| FX_CHARTYPE chartype = GetCharTypeFromProp(dwProps); |
| m_pCurLine->m_LineChars.emplace_back(); |
| |
| CFX_TxtChar* pCurChar = &m_pCurLine->m_LineChars.back(); |
| pCurChar->m_wCharCode = static_cast<uint16_t>(wch); |
| pCurChar->m_nRotation = m_iCharRotation; |
| pCurChar->m_dwCharProps = dwProps; |
| pCurChar->m_dwCharStyles = 0; |
| pCurChar->m_iCharWidth = 0; |
| pCurChar->m_iHorizontalScale = m_iHorScale; |
| pCurChar->m_iVerticalScale = 100; |
| pCurChar->m_dwStatus = 0; |
| pCurChar->m_iBidiClass = 0; |
| pCurChar->m_iBidiLevel = 0; |
| pCurChar->m_iBidiPos = 0; |
| pCurChar->m_iBidiOrder = 0; |
| pCurChar->m_pUserData = nullptr; |
| AppendChar_PageLoad(pCurChar, dwProps); |
| uint32_t dwRet1 = FX_TXTBREAK_None; |
| if (chartype != FX_CHARTYPE_Combination && |
| GetUnifiedCharType(m_eCharType) != GetUnifiedCharType(chartype) && |
| m_eCharType != FX_CHARTYPE_Unknown && |
| m_pCurLine->m_iWidth > m_iLineWidth + m_iTolerance && !m_bSingleLine && |
| (m_eCharType != FX_CHARTYPE_Space || chartype != FX_CHARTYPE_Control)) { |
| dwRet1 = EndBreak(FX_TXTBREAK_LineBreak); |
| int32_t iCount = m_pCurLine->CountChars(); |
| if (iCount > 0) |
| pCurChar = &m_pCurLine->m_LineChars[iCount - 1]; |
| } |
| |
| int32_t iRotation = m_iRotation; |
| if (m_bVertical && (dwProps & 0x8000) != 0) |
| iRotation = (iRotation + 1) % 4; |
| |
| uint32_t dwRet2 = |
| (this->*g_FX_TxtBreak_lpfAppendChar[chartype >> FX_CHARTYPEBITS])( |
| pCurChar, iRotation); |
| return std::max(dwRet1, dwRet2); |
| } |
| |
| void CFX_TxtBreak::EndBreak_UpdateArabicShapes() { |
| ASSERT(m_bArabicShapes); |
| int32_t iCount = m_pCurLine->CountChars(); |
| if (iCount < 2) |
| return; |
| |
| int32_t& iLineWidth = m_pCurLine->m_iWidth; |
| CFX_TxtChar* pCur = m_pCurLine->GetCharPtr(0); |
| bool bPrevNum = (pCur->m_dwCharStyles & FX_TXTCHARSTYLE_ArabicIndic) != 0; |
| pCur = m_pCurLine->GetCharPtr(1); |
| FX_WCHAR wch, wForm; |
| bool bNextNum; |
| int32_t i = 1; |
| int32_t iCharWidth; |
| int32_t iRotation; |
| CFX_TxtChar* pNext; |
| do { |
| i++; |
| if (i < iCount) { |
| pNext = m_pCurLine->GetCharPtr(i); |
| bNextNum = (pNext->m_dwCharStyles & FX_TXTCHARSTYLE_ArabicIndic) != 0; |
| } else { |
| pNext = nullptr; |
| bNextNum = false; |
| } |
| |
| wch = pCur->m_wCharCode; |
| if (wch == L'.') { |
| if (bPrevNum && bNextNum) { |
| iRotation = m_iRotation; |
| if (m_bVertical && (pCur->m_dwCharProps & 0x8000) != 0) |
| iRotation = ((iRotation + 1) & 0x03); |
| |
| wForm = wch == L'.' ? 0x066B : 0x066C; |
| iLineWidth -= pCur->m_iCharWidth; |
| if (m_bCombText) { |
| iCharWidth = m_iCombWidth; |
| } else { |
| if (m_bVertical != FX_IsOdd(iRotation)) |
| iCharWidth = 1000; |
| else if (!m_pFont->GetCharWidth(wForm, iCharWidth, false)) |
| iCharWidth = m_iDefChar; |
| |
| iCharWidth *= m_iFontSize; |
| iCharWidth = iCharWidth * m_iHorScale / 100; |
| } |
| pCur->m_iCharWidth = iCharWidth; |
| iLineWidth += iCharWidth; |
| } |
| } |
| bPrevNum = (pCur->m_dwCharStyles & FX_TXTCHARSTYLE_ArabicIndic) != 0; |
| pCur = pNext; |
| } while (i < iCount); |
| } |
| |
| bool CFX_TxtBreak::EndBreak_SplitLine(CFX_TxtLine* pNextLine, |
| bool bAllChars, |
| uint32_t dwStatus) { |
| int32_t iCount = m_pCurLine->CountChars(); |
| bool bDone = false; |
| CFX_TxtChar* pTC; |
| if (!m_bSingleLine && m_pCurLine->m_iWidth > m_iLineWidth + m_iTolerance) { |
| pTC = m_pCurLine->GetCharPtr(iCount - 1); |
| switch (pTC->GetCharType()) { |
| case FX_CHARTYPE_Tab: |
| case FX_CHARTYPE_Control: |
| case FX_CHARTYPE_Space: |
| break; |
| default: |
| SplitTextLine(m_pCurLine, pNextLine, bAllChars); |
| bDone = true; |
| break; |
| } |
| } |
| |
| iCount = m_pCurLine->CountChars(); |
| CFX_TxtPiece tp; |
| if (bAllChars && !bDone) { |
| int32_t iEndPos = m_pCurLine->m_iWidth; |
| GetBreakPos(m_pCurLine->m_LineChars, iEndPos, bAllChars, true); |
| } |
| return false; |
| } |
| |
| void CFX_TxtBreak::EndBreak_BidiLine(std::deque<FX_TPO>* tpos, |
| uint32_t dwStatus) { |
| CFX_TxtPiece tp; |
| FX_TPO tpo; |
| CFX_TxtChar* pTC; |
| int32_t i; |
| int32_t j; |
| std::vector<CFX_TxtChar>& chars = m_pCurLine->m_LineChars; |
| int32_t iCount = m_pCurLine->CountChars(); |
| bool bDone = (m_pCurLine->m_iArabicChars > 0 || m_bCurRTL); |
| 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, m_bCurRTL ? 1 : 0); |
| } |
| |
| CFX_TxtPieceArray* pCurPieces = &m_pCurLine->m_LinePieces; |
| if (bDone || (m_dwLayoutStyles & FX_TXTLAYOUTSTYLE_MutipleFormat) != 0) { |
| tp.m_dwStatus = FX_TXTBREAK_PieceBreak; |
| tp.m_iStartPos = m_pCurLine->m_iStart; |
| tp.m_pChars = &m_pCurLine->m_LineChars; |
| int32_t iBidiLevel = -1; |
| int32_t iCharWidth; |
| i = 0; |
| j = -1; |
| while (i < iCount) { |
| pTC = &chars[i]; |
| if (iBidiLevel < 0) { |
| iBidiLevel = pTC->m_iBidiLevel; |
| tp.m_iWidth = 0; |
| tp.m_iBidiLevel = iBidiLevel; |
| tp.m_iBidiPos = pTC->m_iBidiOrder; |
| tp.m_dwCharStyles = pTC->m_dwCharStyles; |
| tp.m_pUserData = pTC->m_pUserData; |
| tp.m_iHorizontalScale = pTC->m_iHorizontalScale; |
| tp.m_iVerticalScale = pTC->m_iVerticalScale; |
| tp.m_dwStatus = FX_TXTBREAK_PieceBreak; |
| } |
| if (iBidiLevel != pTC->m_iBidiLevel || pTC->m_dwStatus != 0) { |
| if (iBidiLevel == pTC->m_iBidiLevel) { |
| tp.m_dwStatus = pTC->m_dwStatus; |
| iCharWidth = pTC->m_iCharWidth; |
| if (iCharWidth > 0) |
| tp.m_iWidth += iCharWidth; |
| |
| i++; |
| } |
| 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->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; |
| pCurPieces->Add(tp); |
| tpo.index = ++j; |
| tpo.pos = tp.m_iBidiPos; |
| tpos->push_back(tpo); |
| } |
| if (j > -1) { |
| if (j > 0) { |
| std::sort(tpos->begin(), tpos->end()); |
| int32_t iStartPos = 0; |
| for (i = 0; i <= j; i++) { |
| tpo = (*tpos)[i]; |
| CFX_TxtPiece& ttp = pCurPieces->GetAt(tpo.index); |
| ttp.m_iStartPos = iStartPos; |
| iStartPos += ttp.m_iWidth; |
| } |
| } |
| CFX_TxtPiece& ttp = pCurPieces->GetAt(j); |
| ttp.m_dwStatus = dwStatus; |
| } |
| } else { |
| tp.m_dwStatus = dwStatus; |
| tp.m_iStartPos = m_pCurLine->m_iStart; |
| tp.m_iWidth = m_pCurLine->m_iWidth; |
| tp.m_iStartChar = 0; |
| tp.m_iChars = iCount; |
| tp.m_pChars = &m_pCurLine->m_LineChars; |
| tp.m_pUserData = m_pUserData; |
| pTC = &chars[0]; |
| tp.m_dwCharStyles = pTC->m_dwCharStyles; |
| tp.m_iHorizontalScale = pTC->m_iHorizontalScale; |
| tp.m_iVerticalScale = pTC->m_iVerticalScale; |
| pCurPieces->Add(tp); |
| tpos->push_back({0, 0}); |
| } |
| } |
| |
| void CFX_TxtBreak::EndBreak_Alignment(const std::deque<FX_TPO>& tpos, |
| bool bAllChars, |
| uint32_t dwStatus) { |
| int32_t iNetWidth = m_pCurLine->m_iWidth; |
| int32_t iGapChars = 0; |
| int32_t iCharWidth; |
| CFX_TxtPieceArray* pCurPieces = &m_pCurLine->m_LinePieces; |
| int32_t i; |
| int32_t j; |
| int32_t iCount = pCurPieces->GetSize(); |
| bool bFind = false; |
| FX_TPO tpo; |
| CFX_TxtChar* pTC; |
| FX_CHARTYPE chartype; |
| for (i = iCount - 1; i > -1; i--) { |
| tpo = tpos[i]; |
| CFX_TxtPiece& 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) { |
| pTC = ttp.GetCharPtr(j); |
| if (pTC->m_nBreakType == FX_LBT_DIRECT_BRK) |
| iGapChars++; |
| if (!bFind || !bAllChars) { |
| chartype = pTC->GetCharType(); |
| if (chartype == FX_CHARTYPE_Space || chartype == FX_CHARTYPE_Control) { |
| if (!bFind) { |
| iCharWidth = pTC->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; |
| int32_t iLowerAlignment = (m_iCurAlignment & FX_TXTLINEALIGNMENT_LowerMask); |
| int32_t iHigherAlignment = (m_iCurAlignment & FX_TXTLINEALIGNMENT_HigherMask); |
| if (iGapChars > 0 && (iHigherAlignment == FX_TXTLINEALIGNMENT_Distributed || |
| (iHigherAlignment == FX_TXTLINEALIGNMENT_Justified && |
| dwStatus != FX_TXTBREAK_ParagraphBreak))) { |
| int32_t iStart = -1; |
| for (i = 0; i < iCount; i++) { |
| tpo = tpos[i]; |
| CFX_TxtPiece& ttp = pCurPieces->GetAt(tpo.index); |
| if (iStart < -1) |
| iStart = ttp.m_iStartPos; |
| else |
| ttp.m_iStartPos = iStart; |
| |
| for (j = 0; j < ttp.m_iChars; j++) { |
| pTC = ttp.GetCharPtr(j); |
| if (pTC->m_nBreakType != FX_LBT_DIRECT_BRK || pTC->m_iCharWidth < 0) |
| continue; |
| |
| int32_t k = iOffset / iGapChars; |
| pTC->m_iCharWidth += k; |
| ttp.m_iWidth += k; |
| iOffset -= k; |
| iGapChars--; |
| if (iGapChars < 1) |
| break; |
| } |
| iStart += ttp.m_iWidth; |
| } |
| } else if (iLowerAlignment > FX_TXTLINEALIGNMENT_Left) { |
| if (iLowerAlignment == FX_TXTLINEALIGNMENT_Center) |
| iOffset /= 2; |
| if (iOffset > 0) { |
| for (i = 0; i < iCount; i++) { |
| CFX_TxtPiece& ttp = pCurPieces->GetAt(i); |
| ttp.m_iStartPos += iOffset; |
| } |
| } |
| } |
| } |
| |
| uint32_t CFX_TxtBreak::EndBreak(uint32_t dwStatus) { |
| ASSERT(dwStatus >= FX_TXTBREAK_PieceBreak && |
| dwStatus <= FX_TXTBREAK_PageBreak); |
| const CFX_TxtPieceArray* pCurPieces = &m_pCurLine->m_LinePieces; |
| int32_t iCount = pCurPieces->GetSize(); |
| if (iCount > 0) { |
| CFX_TxtPiece* pLastPiece = pCurPieces->GetPtrAt(--iCount); |
| if (dwStatus > FX_TXTBREAK_PieceBreak) |
| pLastPiece->m_dwStatus = dwStatus; |
| else |
| dwStatus = pLastPiece->m_dwStatus; |
| return dwStatus; |
| } else { |
| const CFX_TxtLine* pLastLine = GetTxtLine(); |
| if (pLastLine) { |
| pCurPieces = &pLastLine->m_LinePieces; |
| iCount = pCurPieces->GetSize(); |
| if (iCount-- > 0) { |
| CFX_TxtPiece* pLastPiece = pCurPieces->GetPtrAt(iCount); |
| if (dwStatus > FX_TXTBREAK_PieceBreak) |
| pLastPiece->m_dwStatus = dwStatus; |
| else |
| dwStatus = pLastPiece->m_dwStatus; |
| return dwStatus; |
| } |
| return FX_TXTBREAK_None; |
| } |
| |
| iCount = m_pCurLine->CountChars(); |
| if (iCount < 1) |
| return FX_TXTBREAK_None; |
| |
| CFX_TxtChar* pTC = m_pCurLine->GetCharPtr(iCount - 1); |
| pTC->m_dwStatus = dwStatus; |
| if (dwStatus <= FX_TXTBREAK_PieceBreak) |
| return dwStatus; |
| } |
| |
| m_iReady = m_pCurLine == &m_TxtLine1 ? 1 : 2; |
| CFX_TxtLine* pNextLine = |
| m_pCurLine == &m_TxtLine1 ? &m_TxtLine2 : &m_TxtLine1; |
| bool bAllChars = (m_iCurAlignment > FX_TXTLINEALIGNMENT_Right); |
| if (m_bArabicShapes) |
| EndBreak_UpdateArabicShapes(); |
| |
| if (!EndBreak_SplitLine(pNextLine, bAllChars, dwStatus)) { |
| std::deque<FX_TPO> tpos; |
| EndBreak_BidiLine(&tpos, dwStatus); |
| if (m_iCurAlignment > FX_TXTLINEALIGNMENT_Left) |
| EndBreak_Alignment(tpos, bAllChars, dwStatus); |
| } |
| |
| m_pCurLine = pNextLine; |
| CFX_Char* pTC = GetLastChar(0, false); |
| m_eCharType = pTC ? pTC->GetCharType() : FX_CHARTYPE_Unknown; |
| if (dwStatus == FX_TXTBREAK_ParagraphBreak) { |
| m_iArabicContext = m_iCurArabicContext = 1; |
| ResetArabicContext(); |
| } |
| return dwStatus; |
| } |
| |
| int32_t CFX_TxtBreak::GetBreakPos(std::vector<CFX_TxtChar>& ca, |
| int32_t& iEndPos, |
| bool bAllChars, |
| bool bOnlyBrk) { |
| int32_t iLength = pdfium::CollectionSize<int32_t>(ca) - 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 (m_bSingleLine || iEndPos <= m_iLineWidth) { |
| if (!bAllChars) |
| return iLength; |
| |
| iBreak = iLength; |
| iBreakPos = iEndPos; |
| } |
| |
| FX_LINEBREAKTYPE eType; |
| uint32_t nCodeProp; |
| uint32_t nCur; |
| uint32_t nNext; |
| CFX_Char* pCur = &ca[iLength--]; |
| if (bAllChars) |
| pCur->m_nBreakType = FX_LBT_UNKNOWN; |
| |
| nCodeProp = pCur->m_dwCharProps; |
| nNext = nCodeProp & 0x003F; |
| int32_t iCharWidth = pCur->m_iCharWidth; |
| if (iCharWidth > 0) |
| iEndPos -= iCharWidth; |
| |
| while (iLength >= 0) { |
| pCur = &ca[iLength]; |
| nCodeProp = pCur->m_dwCharProps; |
| nCur = nCodeProp & 0x003F; |
| if (nCur == FX_CBP_SP) { |
| if (nNext == FX_CBP_SP) |
| eType = FX_LBT_PROHIBITED_BRK; |
| else |
| eType = gs_FX_LineBreak_PairTable[nCur][nNext]; |
| } else { |
| if (nNext == FX_CBP_SP) |
| eType = FX_LBT_PROHIBITED_BRK; |
| else |
| eType = gs_FX_LineBreak_PairTable[nCur][nNext]; |
| } |
| if (bAllChars) |
| pCur->m_nBreakType = static_cast<uint8_t>(eType); |
| if (!bOnlyBrk) { |
| if (m_bSingleLine || iEndPos <= m_iLineWidth || nCur == FX_CBP_SP) { |
| 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; |
| } |
| } |
| iCharWidth = pCur->m_iCharWidth; |
| 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_TxtBreak::SplitTextLine(CFX_TxtLine* pCurLine, |
| CFX_TxtLine* pNextLine, |
| bool bAllChars) { |
| ASSERT(pCurLine && pNextLine); |
| int32_t iCount = pCurLine->CountChars(); |
| if (iCount < 2) |
| return; |
| |
| int32_t iEndPos = pCurLine->m_iWidth; |
| std::vector<CFX_TxtChar>& 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; |
| } |
| |
| pNextLine->m_LineChars = |
| std::vector<CFX_TxtChar>(curChars.begin() + iCharPos, curChars.end()); |
| curChars.erase(curChars.begin() + iCharPos, curChars.end()); |
| pCurLine->m_iWidth = iEndPos; |
| CFX_TxtChar* pTC = &curChars[iCharPos - 1]; |
| pTC->m_nBreakType = FX_LBT_UNKNOWN; |
| iCount = pdfium::CollectionSize<int>(pNextLine->m_LineChars); |
| int32_t iWidth = 0; |
| for (int32_t i = 0; i < iCount; i++) { |
| if (pNextLine->m_LineChars[i].GetCharType() >= FX_CHARTYPE_ArabicAlef) { |
| pCurLine->m_iArabicChars--; |
| pNextLine->m_iArabicChars++; |
| } |
| iWidth += std::max(0, pNextLine->m_LineChars[i].m_iCharWidth); |
| pNextLine->m_LineChars[i].m_dwStatus = 0; |
| } |
| pNextLine->m_iWidth = iWidth; |
| } |
| |
| int32_t CFX_TxtBreak::CountBreakPieces() const { |
| const CFX_TxtPieceArray* pTxtPieces = GetTxtPieces(); |
| return pTxtPieces ? pTxtPieces->GetSize() : 0; |
| } |
| |
| const CFX_TxtPiece* CFX_TxtBreak::GetBreakPiece(int32_t index) const { |
| const CFX_TxtPieceArray* pTxtPieces = GetTxtPieces(); |
| if (!pTxtPieces) |
| return nullptr; |
| if (index < 0 || index >= pTxtPieces->GetSize()) |
| return nullptr; |
| return pTxtPieces->GetPtrAt(index); |
| } |
| |
| void CFX_TxtBreak::ClearBreakPieces() { |
| const CFX_TxtLine* pTxtLine = GetTxtLine(); |
| if (pTxtLine) |
| const_cast<CFX_TxtLine*>(pTxtLine)->RemoveAll(true); |
| m_iReady = 0; |
| } |
| |
| void CFX_TxtBreak::Reset() { |
| m_eCharType = FX_CHARTYPE_Unknown; |
| m_iArabicContext = 1; |
| m_iCurArabicContext = 1; |
| ResetArabicContext(); |
| m_TxtLine1.RemoveAll(true); |
| m_TxtLine2.RemoveAll(true); |
| } |
| |
| struct FX_FORMCHAR { |
| uint16_t wch; |
| uint16_t wForm; |
| int32_t iWidth; |
| }; |
| |
| int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun, |
| FXTEXT_CHARPOS* pCharPos, |
| bool bCharCode, |
| CFX_WideString* pWSForms) const { |
| if (!pTxtRun || pTxtRun->iLength < 1) |
| return 0; |
| |
| IFX_TxtAccess* pAccess = pTxtRun->pAccess; |
| const FDE_TEXTEDITPIECE* pIdentity = pTxtRun->pIdentity; |
| const FX_WCHAR* pStr = pTxtRun->wsStr.c_str(); |
| int32_t* pWidths = pTxtRun->pWidths; |
| int32_t iLength = pTxtRun->iLength - 1; |
| CFX_RetainPtr<CFGAS_GEFont> pFont = pTxtRun->pFont; |
| uint32_t dwStyles = pTxtRun->dwStyles; |
| CFX_RectF rtText(*pTxtRun->pRect); |
| bool bRTLPiece = (pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_OddBidiLevel) != 0; |
| bool bArabicNumber = |
| (pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_ArabicNumber) != 0; |
| bool bArabicComma = |
| (pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_ArabicComma) != 0; |
| FX_FLOAT fFontSize = pTxtRun->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_FLOAT fDescent = fFontHeight * (FX_FLOAT)iDescent / (FX_FLOAT)iMaxHeight; |
| bool bVerticalDoc = (dwStyles & FX_TXTLAYOUTSTYLE_VerticalLayout) != 0; |
| bool bVerticalChar = (dwStyles & FX_TXTLAYOUTSTYLE_VerticalChars) != 0; |
| int32_t iRotation = GetLineRotation(dwStyles) + pTxtRun->iCharRotation; |
| FX_FLOAT fX = rtText.left; |
| FX_FLOAT fY; |
| FX_FLOAT fCharWidth; |
| FX_FLOAT fCharHeight; |
| int32_t iHorScale = pTxtRun->iHorizontalScale; |
| int32_t iVerScale = pTxtRun->iVerticalScale; |
| bool bSkipSpace = pTxtRun->bSkipSpace; |
| FX_FORMCHAR formChars[3]; |
| FX_FLOAT fYBase; |
| |
| if (bVerticalDoc) { |
| fX += (rtText.width - fFontSize) / 2.0f; |
| fYBase = bRTLPiece ? rtText.bottom() : rtText.top; |
| fY = fYBase; |
| } else { |
| if (bRTLPiece) |
| fX = rtText.right(); |
| |
| fYBase = rtText.top + (rtText.height - fFontSize) / 2.0f; |
| fY = fYBase + fAscent; |
| } |
| |
| int32_t iCount = 0; |
| int32_t iNext = 0; |
| FX_WCHAR wPrev = 0xFEFF; |
| FX_WCHAR wNext = 0xFEFF; |
| FX_WCHAR wForm = 0xFEFF; |
| FX_WCHAR wLast = 0xFEFF; |
| bool bShadda = false; |
| bool bLam = false; |
| for (int32_t i = 0; i <= iLength; i++) { |
| int32_t iWidth; |
| FX_WCHAR wch; |
| if (pAccess) { |
| wch = pAccess->GetChar(pIdentity, i); |
| iWidth = pAccess->GetWidth(pIdentity, i); |
| } else { |
| wch = *pStr++; |
| iWidth = *pWidths++; |
| } |
| |
| uint32_t dwProps = FX_GetUnicodeProperties(wch); |
| FX_CHARTYPE chartype = GetCharTypeFromProp(dwProps); |
| if (chartype == FX_CHARTYPE_ArabicAlef && iWidth == 0) { |
| wPrev = 0xFEFF; |
| wLast = wch; |
| continue; |
| } |
| |
| if (chartype >= FX_CHARTYPE_ArabicAlef) { |
| if (i < iLength) { |
| if (pAccess) { |
| iNext = i + 1; |
| while (iNext <= iLength) { |
| wNext = pAccess->GetChar(pIdentity, iNext); |
| dwProps = FX_GetUnicodeProperties(wNext); |
| if ((dwProps & FX_CHARTYPEBITSMASK) != FX_CHARTYPE_Combination) |
| break; |
| |
| iNext++; |
| } |
| if (iNext > iLength) |
| wNext = 0xFEFF; |
| } else { |
| int32_t j = -1; |
| do { |
| j++; |
| if (i + j >= iLength) |
| break; |
| |
| wNext = pStr[j]; |
| dwProps = FX_GetUnicodeProperties(wNext); |
| } while ((dwProps & FX_CHARTYPEBITSMASK) == FX_CHARTYPE_Combination); |
| if (i + j >= iLength) |
| wNext = 0xFEFF; |
| } |
| } else { |
| wNext = 0xFEFF; |
| } |
| |
| wForm = pdfium::arabic::GetFormChar(wch, wPrev, wNext); |
| bLam = (wPrev == 0x0644 && wch == 0x0644 && wNext == 0x0647); |
| } else if (chartype == FX_CHARTYPE_Combination) { |
| wForm = wch; |
| if (wch >= 0x064C && wch <= 0x0651) { |
| if (bShadda) { |
| wForm = 0xFEFF; |
| bShadda = false; |
| } else { |
| wNext = 0xFEFF; |
| if (pAccess) { |
| iNext = i + 1; |
| if (iNext <= iLength) |
| wNext = pAccess->GetChar(pIdentity, iNext); |
| } else { |
| if (i < iLength) |
| wNext = *pStr; |
| } |
| if (wch == 0x0651) { |
| if (wNext >= 0x064C && wNext <= 0x0650) { |
| wForm = FX_GetArabicFromShaddaTable(wNext); |
| bShadda = true; |
| } |
| } else { |
| if (wNext == 0x0651) { |
| wForm = FX_GetArabicFromShaddaTable(wch); |
| bShadda = true; |
| } |
| } |
| } |
| } else { |
| bShadda = false; |
| } |
| } else if (chartype == FX_CHARTYPE_Numeric) { |
| wForm = wch; |
| if (bArabicNumber) |
| wForm += 0x0630; |
| } else if (wch == L'.') { |
| wForm = wch; |
| if (bArabicNumber) { |
| wNext = 0xFEFF; |
| if (pAccess) { |
| iNext = i + 1; |
| if (iNext <= iLength) |
| wNext = pAccess->GetChar(pIdentity, iNext); |
| } else { |
| if (i < iLength) |
| wNext = *pStr; |
| } |
| if (wNext >= L'0' && wNext <= L'9') |
| wForm = 0x066B; |
| } |
| } else if (wch == L',') { |
| wForm = wch; |
| if (bArabicComma) |
| wForm = 0x060C; |
| } else if (bRTLPiece || bVerticalChar) { |
| wForm = FX_GetMirrorChar(wch, dwProps, bRTLPiece, bVerticalChar); |
| } else { |
| wForm = wch; |
| } |
| if (chartype != FX_CHARTYPE_Combination) |
| bShadda = false; |
| if (chartype < FX_CHARTYPE_ArabicAlef) |
| bLam = false; |
| |
| dwProps = FX_GetUnicodeProperties(wForm); |
| int32_t iCharRotation = iRotation; |
| if (bVerticalChar && (dwProps & 0x8000) != 0) |
| iCharRotation++; |
| |
| iCharRotation %= 4; |
| bool bEmptyChar = |
| (chartype >= FX_CHARTYPE_Tab && chartype <= FX_CHARTYPE_Control); |
| if (wForm == 0xFEFF) |
| bEmptyChar = true; |
| |
| int32_t iForms = bLam ? 3 : 1; |
| iCount += (bEmptyChar && bSkipSpace) ? 0 : iForms; |
| if (!pCharPos) { |
| if (iWidth > 0) |
| wPrev = wch; |
| wLast = wch; |
| continue; |
| } |
| |
| int32_t iCharWidth = iWidth; |
| if (iCharWidth < 0) |
| iCharWidth = -iCharWidth; |
| |
| iCharWidth /= iFontSize; |
| formChars[0].wch = wch; |
| formChars[0].wForm = wForm; |
| formChars[0].iWidth = iCharWidth; |
| if (bLam) { |
| formChars[1].wForm = 0x0651; |
| iCharWidth = 0; |
| pFont->GetCharWidth(0x0651, iCharWidth, false); |
| formChars[1].iWidth = iCharWidth; |
| formChars[2].wForm = 0x0670; |
| iCharWidth = 0; |
| pFont->GetCharWidth(0x0670, iCharWidth, false); |
| formChars[2].iWidth = iCharWidth; |
| } |
| |
| for (int32_t j = 0; j < iForms; j++) { |
| wForm = (FX_WCHAR)formChars[j].wForm; |
| iCharWidth = formChars[j].iWidth; |
| if (j > 0) { |
| chartype = FX_CHARTYPE_Combination; |
| wch = wForm; |
| wLast = (FX_WCHAR)formChars[j - 1].wForm; |
| } |
| if (!bEmptyChar || (bEmptyChar && !bSkipSpace)) { |
| pCharPos->m_GlyphIndex = |
| bCharCode ? wch : pFont->GetGlyphIndex(wForm, false); |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| pCharPos->m_ExtGID = pCharPos->m_GlyphIndex; |
| #endif |
| pCharPos->m_FontCharWidth = iCharWidth; |
| if (pWSForms) |
| *pWSForms += wForm; |
| } |
| |
| int32_t iCharHeight; |
| if (bVerticalDoc) { |
| iCharHeight = iCharWidth; |
| iCharWidth = 1000; |
| } else { |
| iCharHeight = 1000; |
| } |
| |
| fCharWidth = fFontSize * iCharWidth / 1000.0f; |
| fCharHeight = fFontSize * iCharHeight / 1000.0f; |
| if (bRTLPiece && chartype != FX_CHARTYPE_Combination) { |
| if (bVerticalDoc) |
| fY -= fCharHeight; |
| else |
| fX -= fCharWidth; |
| } |
| if (!bEmptyChar || (bEmptyChar && !bSkipSpace)) { |
| pCharPos->m_Origin = CFX_PointF(fX, fY); |
| if ((dwStyles & FX_TXTLAYOUTSTYLE_CombText) != 0) { |
| int32_t iFormWidth = iCharWidth; |
| pFont->GetCharWidth(wForm, iFormWidth, false); |
| FX_FLOAT fOffset = fFontSize * (iCharWidth - iFormWidth) / 2000.0f; |
| if (bVerticalDoc) |
| pCharPos->m_Origin.y += fOffset; |
| else |
| pCharPos->m_Origin.x += fOffset; |
| } |
| |
| if (chartype == FX_CHARTYPE_Combination) { |
| CFX_Rect rtBBox; |
| if (pFont->GetCharBBox(wForm, &rtBBox, false)) { |
| pCharPos->m_Origin.y = |
| fYBase + fFontSize - |
| fFontSize * (FX_FLOAT)rtBBox.height / (FX_FLOAT)iMaxHeight; |
| } |
| if (wForm == wch && wLast != 0xFEFF) { |
| uint32_t dwLastProps = FX_GetUnicodeProperties(wLast); |
| if ((dwLastProps & FX_CHARTYPEBITSMASK) == |
| FX_CHARTYPE_Combination) { |
| CFX_Rect rtBox; |
| if (pFont->GetCharBBox(wLast, &rtBox, false)) |
| pCharPos->m_Origin.y -= fFontSize * rtBox.height / iMaxHeight; |
| } |
| } |
| } |
| CFX_PointF ptOffset; |
| if (bVerticalChar && (dwProps & 0x00010000) != 0) { |
| CFX_Rect rtBBox; |
| if (pFont->GetCharBBox(wForm, &rtBBox, false)) { |
| ptOffset.x = fFontSize * (850 - rtBBox.right()) / iMaxHeight; |
| ptOffset.y = fFontSize * (iAscent - rtBBox.top - 150) / iMaxHeight; |
| } |
| } |
| pCharPos->m_Origin.x += ptOffset.x; |
| pCharPos->m_Origin.y -= ptOffset.y; |
| } |
| if (!bRTLPiece && chartype != FX_CHARTYPE_Combination) { |
| if (bVerticalDoc) |
| fY += fCharHeight; |
| else |
| fX += fCharWidth; |
| } |
| |
| if (!bEmptyChar || (bEmptyChar && !bSkipSpace)) { |
| pCharPos->m_bGlyphAdjust = true; |
| if (bVerticalDoc) { |
| if (iCharRotation == 0) { |
| 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; |
| } else if (iCharRotation == 1) { |
| pCharPos->m_AdjustMatrix[0] = 0; |
| pCharPos->m_AdjustMatrix[1] = -1; |
| pCharPos->m_AdjustMatrix[2] = -1; |
| pCharPos->m_AdjustMatrix[3] = 0; |
| pCharPos->m_Origin.x -= fDescent; |
| } else if (iCharRotation == 2) { |
| pCharPos->m_AdjustMatrix[0] = 1; |
| pCharPos->m_AdjustMatrix[1] = 0; |
| pCharPos->m_AdjustMatrix[2] = 0; |
| pCharPos->m_AdjustMatrix[3] = -1; |
| pCharPos->m_Origin.x += fCharWidth; |
| pCharPos->m_Origin.y += fAscent; |
| } else { |
| pCharPos->m_AdjustMatrix[0] = 0; |
| pCharPos->m_AdjustMatrix[1] = 1; |
| pCharPos->m_AdjustMatrix[2] = 1; |
| pCharPos->m_AdjustMatrix[3] = 0; |
| pCharPos->m_Origin.x += fAscent; |
| } |
| } else { |
| if (iCharRotation == 0) { |
| pCharPos->m_AdjustMatrix[0] = -1; |
| pCharPos->m_AdjustMatrix[1] = 0; |
| pCharPos->m_AdjustMatrix[2] = 0; |
| pCharPos->m_AdjustMatrix[3] = 1; |
| } else if (iCharRotation == 1) { |
| pCharPos->m_AdjustMatrix[0] = 0; |
| pCharPos->m_AdjustMatrix[1] = -1; |
| pCharPos->m_AdjustMatrix[2] = -1; |
| pCharPos->m_AdjustMatrix[3] = 0; |
| pCharPos->m_Origin.x -= fDescent; |
| pCharPos->m_Origin.y -= fAscent + fDescent; |
| } else if (iCharRotation == 2) { |
| pCharPos->m_AdjustMatrix[0] = 1; |
| pCharPos->m_AdjustMatrix[1] = 0; |
| pCharPos->m_AdjustMatrix[2] = 0; |
| pCharPos->m_AdjustMatrix[3] = -1; |
| pCharPos->m_Origin.x += fCharWidth; |
| pCharPos->m_Origin.y -= fAscent; |
| } else { |
| pCharPos->m_AdjustMatrix[0] = 0; |
| pCharPos->m_AdjustMatrix[1] = 1; |
| pCharPos->m_AdjustMatrix[2] = 1; |
| pCharPos->m_AdjustMatrix[3] = 0; |
| pCharPos->m_Origin.x += 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 = static_cast<FX_WCHAR>(formChars[0].wch); |
| wLast = wch; |
| } |
| return iCount; |
| } |
| |
| std::vector<CFX_RectF> CFX_TxtBreak::GetCharRects(const FX_TXTRUN* pTxtRun, |
| bool bCharBBox) const { |
| if (!pTxtRun || pTxtRun->iLength < 1) |
| return std::vector<CFX_RectF>(); |
| |
| IFX_TxtAccess* pAccess = pTxtRun->pAccess; |
| const FDE_TEXTEDITPIECE* pIdentity = pTxtRun->pIdentity; |
| const FX_WCHAR* pStr = pTxtRun->wsStr.c_str(); |
| int32_t* pWidths = pTxtRun->pWidths; |
| int32_t iLength = pTxtRun->iLength; |
| CFX_RectF rect(*pTxtRun->pRect); |
| FX_FLOAT fFontSize = pTxtRun->fFontSize; |
| int32_t iFontSize = FXSYS_round(fFontSize * 20.0f); |
| FX_FLOAT fScale = fFontSize / 1000.0f; |
| CFX_RetainPtr<CFGAS_GEFont> pFont = pTxtRun->pFont; |
| if (!pFont) |
| bCharBBox = false; |
| |
| CFX_Rect bbox; |
| if (bCharBBox) |
| bCharBBox = pFont->GetBBox(&bbox); |
| |
| FX_FLOAT fLeft = std::max(0.0f, bbox.left * fScale); |
| FX_FLOAT fHeight = FXSYS_fabs(bbox.height * fScale); |
| bool bRTLPiece = !!(pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_OddBidiLevel); |
| bool bVertical = !!(pTxtRun->dwStyles & FX_TXTLAYOUTSTYLE_VerticalLayout); |
| bool bSingleLine = !!(pTxtRun->dwStyles & FX_TXTLAYOUTSTYLE_SingleLine); |
| bool bCombText = !!(pTxtRun->dwStyles & FX_TXTLAYOUTSTYLE_CombText); |
| FX_WCHAR wch; |
| FX_WCHAR wLineBreakChar = pTxtRun->wLineBreakChar; |
| int32_t iCharSize; |
| FX_FLOAT fCharSize; |
| FX_FLOAT fStart; |
| if (bVertical) |
| fStart = bRTLPiece ? rect.bottom() : rect.top; |
| else |
| fStart = bRTLPiece ? rect.right() : rect.left; |
| |
| std::vector<CFX_RectF> rtArray(iLength); |
| for (int32_t i = 0; i < iLength; i++) { |
| if (pAccess) { |
| wch = pAccess->GetChar(pIdentity, i); |
| iCharSize = pAccess->GetWidth(pIdentity, i); |
| } else { |
| wch = *pStr++; |
| iCharSize = *pWidths++; |
| } |
| fCharSize = static_cast<FX_FLOAT>(iCharSize) / 20000.0f; |
| bool bRet = (!bSingleLine && IsCtrlCode(wch)); |
| if (!(wch == L'\v' || wch == L'\f' || wch == 0x2028 || wch == 0x2029 || |
| (wLineBreakChar != 0xFEFF && wch == wLineBreakChar))) { |
| bRet = false; |
| } |
| if (bRet) { |
| iCharSize = iFontSize * 500; |
| fCharSize = fFontSize / 2.0f; |
| } |
| if (bVertical) { |
| rect.top = fStart; |
| if (bRTLPiece) { |
| rect.top -= fCharSize; |
| fStart -= fCharSize; |
| } else { |
| fStart += fCharSize; |
| } |
| rect.height = fCharSize; |
| } else { |
| rect.left = fStart; |
| if (bRTLPiece) { |
| rect.left -= fCharSize; |
| fStart -= fCharSize; |
| } else { |
| fStart += fCharSize; |
| } |
| rect.width = fCharSize; |
| } |
| |
| if (bCharBBox && !bRet) { |
| int32_t iCharWidth = 1000; |
| pFont->GetCharWidth(wch, iCharWidth, false); |
| FX_FLOAT fRTLeft = 0, fCharWidth = 0; |
| if (iCharWidth > 0) { |
| fCharWidth = iCharWidth * fScale; |
| fRTLeft = fLeft; |
| if (bCombText) |
| fRTLeft = (rect.width - fCharWidth) / 2.0f; |
| } |
| CFX_RectF rtBBoxF; |
| if (bVertical) { |
| rtBBoxF.top = rect.left + fRTLeft; |
| rtBBoxF.left = rect.top + (rect.height - fHeight) / 2.0f; |
| rtBBoxF.height = fCharWidth; |
| rtBBoxF.width = fHeight; |
| rtBBoxF.left = std::max(rtBBoxF.left, 0.0f); |
| } else { |
| rtBBoxF.left = rect.left + fRTLeft; |
| rtBBoxF.top = rect.top + (rect.height - fHeight) / 2.0f; |
| rtBBoxF.width = fCharWidth; |
| rtBBoxF.height = fHeight; |
| rtBBoxF.top = std::max(rtBBoxF.top, 0.0f); |
| } |
| rtArray[i] = rtBBoxF; |
| continue; |
| } |
| rtArray[i] = rect; |
| } |
| return rtArray; |
| } |
| |
| FX_TXTRUN::FX_TXTRUN() |
| : pAccess(nullptr), |
| pIdentity(nullptr), |
| pWidths(nullptr), |
| iLength(0), |
| pFont(nullptr), |
| fFontSize(12), |
| dwStyles(0), |
| iHorizontalScale(100), |
| iVerticalScale(100), |
| iCharRotation(0), |
| dwCharStyles(0), |
| pRect(nullptr), |
| wLineBreakChar(L'\n'), |
| bSkipSpace(true) {} |
| |
| FX_TXTRUN::~FX_TXTRUN() {} |
| |
| FX_TXTRUN::FX_TXTRUN(const FX_TXTRUN& other) = default; |
| |
| CFX_TxtPiece::CFX_TxtPiece() |
| : m_dwStatus(FX_TXTBREAK_PieceBreak), |
| m_iStartPos(0), |
| m_iWidth(-1), |
| m_iStartChar(0), |
| m_iChars(0), |
| m_iBidiLevel(0), |
| m_iBidiPos(0), |
| m_iHorizontalScale(100), |
| m_iVerticalScale(100), |
| m_dwCharStyles(0), |
| m_pChars(nullptr), |
| m_pUserData(nullptr) {} |
| |
| CFX_TxtLine::CFX_TxtLine() |
| : m_LinePieces(16), m_iStart(0), m_iWidth(0), m_iArabicChars(0) {} |
| |
| CFX_TxtLine::~CFX_TxtLine() { |
| RemoveAll(); |
| } |
