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authorDan Sinclair <dsinclair@chromium.org>2017-04-18 13:56:39 -0400
committerChromium commit bot <commit-bot@chromium.org>2017-04-18 18:08:17 +0000
commit994acdc1a31015674e786d24cc37d08dfae6d863 (patch)
treecc0fc6e15f4dd439b86e2cb673282613867ce4bb /xfa/fgas/layout/cfx_txtbreak.cpp
parent5ae87922cb96810a05b2262c66b55b7e8f00e46d (diff)
downloadpdfium-994acdc1a31015674e786d24cc37d08dfae6d863.tar.xz
Rename text break files to match class names.
This CL renames several fgas/layout files to match the class names contained in the files. Change-Id: Ib4feaa902618e577261e51dbac743cb4cb500ea1 Reviewed-on: https://pdfium-review.googlesource.com/4290 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
Diffstat (limited to 'xfa/fgas/layout/cfx_txtbreak.cpp')
-rw-r--r--xfa/fgas/layout/cfx_txtbreak.cpp1027
1 files changed, 1027 insertions, 0 deletions
diff --git a/xfa/fgas/layout/cfx_txtbreak.cpp b/xfa/fgas/layout/cfx_txtbreak.cpp
new file mode 100644
index 0000000000..e898a22991
--- /dev/null
+++ b/xfa/fgas/layout/cfx_txtbreak.cpp
@@ -0,0 +1,1027 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "xfa/fgas/layout/cfx_txtbreak.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/cfx_linebreak.h"
+
+namespace {
+
+bool IsCtrlCode(wchar_t ch) {
+ uint32_t dwRet = (FX_GetUnicodeProperties(ch) & FX_CHARTYPEBITSMASK);
+ return dwRet == FX_CHARTYPE_Tab || dwRet == FX_CHARTYPE_Control;
+}
+
+} // namespace
+
+CFX_TxtBreak::CFX_TxtBreak()
+ : CFX_Break(FX_LAYOUTSTYLE_None),
+ m_iAlignment(CFX_TxtLineAlignment_Left),
+ m_iCombWidth(360000) {}
+
+CFX_TxtBreak::~CFX_TxtBreak() {}
+
+void CFX_TxtBreak::SetLineWidth(float fLineWidth) {
+ m_iLineWidth = FXSYS_round(fLineWidth * 20000.0f);
+ ASSERT(m_iLineWidth >= 20000);
+}
+
+void CFX_TxtBreak::SetAlignment(int32_t iAlignment) {
+ ASSERT(iAlignment >= CFX_TxtLineAlignment_Left &&
+ iAlignment <= CFX_TxtLineAlignment_Justified);
+ m_iAlignment = iAlignment;
+}
+
+void CFX_TxtBreak::SetCombWidth(float fCombWidth) {
+ m_iCombWidth = FXSYS_round(fCombWidth * 20000.0f);
+}
+
+void CFX_TxtBreak::AppendChar_PageLoad(CFX_Char* pCurChar, uint32_t dwProps) {
+ pCurChar->m_dwStatus = CFX_BreakType::None;
+ pCurChar->m_dwCharStyles = m_iAlignment | (1 << 8);
+}
+
+void CFX_TxtBreak::AppendChar_Combination(CFX_Char* pCurChar) {
+ wchar_t wch = pCurChar->m_wCharCode;
+ wchar_t wForm;
+ int32_t iCharWidth = 0;
+ pCurChar->m_iCharWidth = -1;
+ if (m_bCombText) {
+ iCharWidth = m_iCombWidth;
+ } else {
+ wForm = wch;
+ CFX_Char* pLastChar = GetLastChar(0, false, false);
+ if (pLastChar &&
+ (pLastChar->m_dwCharStyles & FX_TXTCHARSTYLE_ArabicShadda) == 0) {
+ bool bShadda = false;
+ if (wch == 0x0651) {
+ wchar_t 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_iHorizontalScale / 100;
+ }
+ pCurChar->m_iCharWidth = -iCharWidth;
+}
+
+void CFX_TxtBreak::AppendChar_Tab(CFX_Char* pCurChar) {
+ m_eCharType = FX_CHARTYPE_Tab;
+}
+
+CFX_BreakType CFX_TxtBreak::AppendChar_Control(CFX_Char* pCurChar) {
+ m_eCharType = FX_CHARTYPE_Control;
+ CFX_BreakType dwRet = CFX_BreakType::None;
+ if (!m_bSingleLine) {
+ wchar_t wch = pCurChar->m_wCharCode;
+ switch (wch) {
+ case L'\v':
+ case 0x2028:
+ dwRet = CFX_BreakType::Line;
+ break;
+ case L'\f':
+ dwRet = CFX_BreakType::Page;
+ break;
+ case 0x2029:
+ dwRet = CFX_BreakType::Paragraph;
+ break;
+ default:
+ if (wch == m_wParagraphBreakChar)
+ dwRet = CFX_BreakType::Paragraph;
+ break;
+ }
+ if (dwRet != CFX_BreakType::None)
+ dwRet = EndBreak(dwRet);
+ }
+ return dwRet;
+}
+
+CFX_BreakType CFX_TxtBreak::AppendChar_Arabic(CFX_Char* pCurChar) {
+ FX_CHARTYPE chartype = pCurChar->GetCharType();
+ int32_t& iLineWidth = m_pCurLine->m_iWidth;
+ wchar_t wForm;
+ int32_t iCharWidth = 0;
+ CFX_Char* pLastChar = nullptr;
+ bool bAlef = false;
+ if (!m_bCombText && m_eCharType >= FX_CHARTYPE_ArabicAlef &&
+ m_eCharType <= FX_CHARTYPE_ArabicDistortion) {
+ pLastChar = GetLastChar(1, true, false);
+ if (pLastChar) {
+ iCharWidth = pLastChar->m_iCharWidth;
+ if (iCharWidth > 0)
+ iLineWidth -= iCharWidth;
+
+ CFX_Char* pPrevChar = GetLastChar(2, true, false);
+ wForm = pdfium::arabic::GetFormChar(pLastChar, pPrevChar, pCurChar);
+ bAlef = (wForm == 0xFEFF &&
+ pLastChar->GetCharType() == FX_CHARTYPE_ArabicAlef);
+ m_pFont->GetCharWidth(wForm, iCharWidth, false);
+
+ if (wForm == 0xFEFF)
+ iCharWidth = m_iDefChar;
+
+ iCharWidth *= m_iFontSize;
+ iCharWidth = iCharWidth * m_iHorizontalScale / 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 {
+ m_pFont->GetCharWidth(wForm, iCharWidth, false);
+
+ if (wForm == 0xFEFF)
+ iCharWidth = m_iDefChar;
+
+ iCharWidth *= m_iFontSize;
+ iCharWidth = iCharWidth * m_iHorizontalScale / 100;
+ }
+ pCurChar->m_iCharWidth = iCharWidth;
+ iLineWidth += iCharWidth;
+ m_pCurLine->m_iArabicChars++;
+ if (!m_bSingleLine && iLineWidth > m_iLineWidth + m_iTolerance)
+ return EndBreak(CFX_BreakType::Line);
+ return CFX_BreakType::None;
+}
+
+CFX_BreakType CFX_TxtBreak::AppendChar_Others(CFX_Char* pCurChar) {
+ FX_CHARTYPE chartype = pCurChar->GetCharType();
+ int32_t& iLineWidth = m_pCurLine->m_iWidth;
+ int32_t iCharWidth = 0;
+ m_eCharType = chartype;
+ wchar_t wch = pCurChar->m_wCharCode;
+ wchar_t wForm = wch;
+
+ if (m_bCombText) {
+ iCharWidth = m_iCombWidth;
+ } else {
+ if (!m_pFont->GetCharWidth(wForm, iCharWidth, false))
+ iCharWidth = m_iDefChar;
+
+ iCharWidth *= m_iFontSize;
+ iCharWidth = iCharWidth * m_iHorizontalScale / 100;
+ }
+
+ iCharWidth += m_iCharSpace;
+ pCurChar->m_iCharWidth = iCharWidth;
+ iLineWidth += iCharWidth;
+ if (!m_bSingleLine && chartype != FX_CHARTYPE_Space &&
+ iLineWidth > m_iLineWidth + m_iTolerance) {
+ return EndBreak(CFX_BreakType::Line);
+ }
+
+ return CFX_BreakType::None;
+}
+
+CFX_BreakType CFX_TxtBreak::AppendChar(wchar_t wch) {
+ uint32_t dwProps = kTextLayoutCodeProperties[static_cast<uint16_t>(wch)];
+ FX_CHARTYPE chartype = GetCharTypeFromProp(dwProps);
+ m_pCurLine->m_LineChars.emplace_back();
+
+ CFX_Char* pCurChar = &m_pCurLine->m_LineChars.back();
+ pCurChar->m_wCharCode = static_cast<uint16_t>(wch);
+ pCurChar->m_dwCharProps = dwProps;
+ pCurChar->m_dwCharStyles = 0;
+ pCurChar->m_iCharWidth = 0;
+ pCurChar->m_iHorizontalScale = m_iHorizontalScale;
+ pCurChar->m_iVerticalScale = m_iVerticalScale;
+ pCurChar->m_dwStatus = CFX_BreakType::None;
+ pCurChar->m_iBidiClass = 0;
+ pCurChar->m_iBidiLevel = 0;
+ pCurChar->m_iBidiPos = 0;
+ pCurChar->m_iBidiOrder = 0;
+
+ AppendChar_PageLoad(pCurChar, dwProps);
+ CFX_BreakType dwRet1 = CFX_BreakType::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(CFX_BreakType::Line);
+ int32_t iCount = m_pCurLine->CountChars();
+ if (iCount > 0)
+ pCurChar = &m_pCurLine->m_LineChars[iCount - 1];
+ }
+
+ CFX_BreakType dwRet2 = CFX_BreakType::None;
+ switch (chartype) {
+ case FX_CHARTYPE_Tab:
+ AppendChar_Tab(pCurChar);
+ break;
+ case FX_CHARTYPE_Control:
+ dwRet2 = AppendChar_Control(pCurChar);
+ break;
+ case FX_CHARTYPE_Combination:
+ AppendChar_Combination(pCurChar);
+ break;
+ case FX_CHARTYPE_ArabicAlef:
+ case FX_CHARTYPE_ArabicSpecial:
+ case FX_CHARTYPE_ArabicDistortion:
+ case FX_CHARTYPE_ArabicNormal:
+ case FX_CHARTYPE_ArabicForm:
+ case FX_CHARTYPE_Arabic:
+ dwRet2 = AppendChar_Arabic(pCurChar);
+ break;
+ case FX_CHARTYPE_Unknown:
+ case FX_CHARTYPE_Space:
+ case FX_CHARTYPE_Numeric:
+ case FX_CHARTYPE_Normal:
+ default:
+ dwRet2 = AppendChar_Others(pCurChar);
+ break;
+ }
+
+ return std::max(dwRet1, dwRet2);
+}
+
+bool CFX_TxtBreak::EndBreak_SplitLine(CFX_BreakLine* pNextLine,
+ bool bAllChars) {
+ int32_t iCount = m_pCurLine->CountChars();
+ bool bDone = false;
+ CFX_Char* pTC;
+ if (!m_bSingleLine && m_pCurLine->m_iWidth > m_iLineWidth + m_iTolerance) {
+ pTC = m_pCurLine->GetChar(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_BreakPiece 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,
+ CFX_BreakType dwStatus) {
+ CFX_BreakPiece tp;
+ FX_TPO tpo;
+ CFX_Char* pTC;
+ int32_t i;
+ int32_t j;
+ std::vector<CFX_Char>& chars = m_pCurLine->m_LineChars;
+ int32_t iCount = m_pCurLine->CountChars();
+ bool bDone = 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);
+ }
+
+ if (bDone) {
+ tp.m_dwStatus = CFX_BreakType::Piece;
+ 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_iHorizontalScale = pTC->m_iHorizontalScale;
+ tp.m_iVerticalScale = pTC->m_iVerticalScale;
+ tp.m_dwStatus = CFX_BreakType::Piece;
+ }
+ if (iBidiLevel != pTC->m_iBidiLevel ||
+ pTC->m_dwStatus != CFX_BreakType::None) {
+ 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;
+ m_pCurLine->m_LinePieces.push_back(tp);
+ tp.m_iStartPos += tp.m_iWidth;
+ tp.m_iStartChar = i;
+ tpo.index = ++j;
+ tpo.pos = tp.m_iBidiPos;
+ tpos->push_back(tpo);
+ iBidiLevel = -1;
+ } else {
+ iCharWidth = pTC->m_iCharWidth;
+ if (iCharWidth > 0)
+ tp.m_iWidth += iCharWidth;
+
+ i++;
+ }
+ }
+ if (i > tp.m_iStartChar) {
+ tp.m_dwStatus = dwStatus;
+ tp.m_iChars = i - tp.m_iStartChar;
+ m_pCurLine->m_LinePieces.push_back(tp);
+ tpo.index = ++j;
+ tpo.pos = tp.m_iBidiPos;
+ tpos->push_back(tpo);
+ }
+ 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_BreakPiece& ttp = m_pCurLine->m_LinePieces[tpo.index];
+ ttp.m_iStartPos = iStartPos;
+ iStartPos += ttp.m_iWidth;
+ }
+ }
+ m_pCurLine->m_LinePieces[j].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;
+ pTC = &chars[0];
+ tp.m_dwCharStyles = pTC->m_dwCharStyles;
+ tp.m_iHorizontalScale = pTC->m_iHorizontalScale;
+ tp.m_iVerticalScale = pTC->m_iVerticalScale;
+ m_pCurLine->m_LinePieces.push_back(tp);
+ tpos->push_back({0, 0});
+ }
+}
+
+void CFX_TxtBreak::EndBreak_Alignment(const std::deque<FX_TPO>& tpos,
+ bool bAllChars,
+ CFX_BreakType dwStatus) {
+ int32_t iNetWidth = m_pCurLine->m_iWidth;
+ int32_t iGapChars = 0;
+ bool bFind = false;
+ for (auto it = tpos.rbegin(); it != tpos.rend(); ++it) {
+ CFX_BreakPiece& ttp = m_pCurLine->m_LinePieces[it->index];
+ if (!bFind)
+ iNetWidth = ttp.GetEndPos();
+
+ bool bArabic = FX_IsOdd(ttp.m_iBidiLevel);
+ int32_t j = bArabic ? 0 : ttp.m_iChars - 1;
+ while (j > -1 && j < ttp.m_iChars) {
+ const CFX_Char* pTC = ttp.GetChar(j);
+ if (pTC->m_nBreakType == FX_LBT_DIRECT_BRK)
+ iGapChars++;
+ if (!bFind || !bAllChars) {
+ FX_CHARTYPE chartype = pTC->GetCharType();
+ if (chartype == FX_CHARTYPE_Space || chartype == FX_CHARTYPE_Control) {
+ if (!bFind && bAllChars && pTC->m_iCharWidth > 0)
+ iNetWidth -= pTC->m_iCharWidth;
+ } else {
+ bFind = true;
+ if (!bAllChars)
+ break;
+ }
+ }
+ j += bArabic ? 1 : -1;
+ }
+ if (!bAllChars && bFind)
+ break;
+ }
+
+ int32_t iOffset = m_iLineWidth - iNetWidth;
+ if (iGapChars > 0 && m_iAlignment & CFX_TxtLineAlignment_Justified &&
+ dwStatus != CFX_BreakType::Paragraph) {
+ int32_t iStart = -1;
+ for (auto& tpo : tpos) {
+ CFX_BreakPiece& ttp = m_pCurLine->m_LinePieces[tpo.index];
+ if (iStart < -1)
+ iStart = ttp.m_iStartPos;
+ else
+ ttp.m_iStartPos = iStart;
+
+ for (int32_t j = 0; j < ttp.m_iChars; j++) {
+ CFX_Char* pTC = ttp.GetChar(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 (m_iAlignment & CFX_TxtLineAlignment_Center ||
+ m_iAlignment & CFX_TxtLineAlignment_Right) {
+ if (m_iAlignment & CFX_TxtLineAlignment_Center &&
+ !(m_iAlignment & CFX_TxtLineAlignment_Right)) {
+ iOffset /= 2;
+ }
+ if (iOffset > 0) {
+ for (auto& ttp : m_pCurLine->m_LinePieces)
+ ttp.m_iStartPos += iOffset;
+ }
+ }
+}
+
+CFX_BreakType CFX_TxtBreak::EndBreak(CFX_BreakType dwStatus) {
+ ASSERT(dwStatus != CFX_BreakType::None);
+
+ if (!m_pCurLine->m_LinePieces.empty()) {
+ if (dwStatus != CFX_BreakType::Piece)
+ m_pCurLine->m_LinePieces.back().m_dwStatus = dwStatus;
+ return m_pCurLine->m_LinePieces.back().m_dwStatus;
+ }
+
+ if (HasLine()) {
+ if (!m_Line[m_iReadyLineIndex].m_LinePieces.empty()) {
+ if (dwStatus != CFX_BreakType::Piece)
+ m_Line[m_iReadyLineIndex].m_LinePieces.back().m_dwStatus = dwStatus;
+ return m_Line[m_iReadyLineIndex].m_LinePieces.back().m_dwStatus;
+ }
+ return CFX_BreakType::None;
+ }
+
+ int32_t iCount = m_pCurLine->CountChars();
+ if (iCount < 1)
+ return CFX_BreakType::None;
+
+ m_pCurLine->GetChar(iCount - 1)->m_dwStatus = dwStatus;
+ if (dwStatus == CFX_BreakType::Piece)
+ return dwStatus;
+
+ m_iReadyLineIndex = m_pCurLine == &m_Line[0] ? 0 : 1;
+ CFX_BreakLine* pNextLine = &m_Line[1 - m_iReadyLineIndex];
+ bool bAllChars = m_iAlignment > CFX_TxtLineAlignment_Right;
+ if (!EndBreak_SplitLine(pNextLine, bAllChars)) {
+ std::deque<FX_TPO> tpos;
+ EndBreak_BidiLine(&tpos, dwStatus);
+ if (m_iAlignment > CFX_TxtLineAlignment_Left)
+ EndBreak_Alignment(tpos, bAllChars, dwStatus);
+ }
+
+ m_pCurLine = pNextLine;
+ CFX_Char* pTC = GetLastChar(0, false, false);
+ m_eCharType = pTC ? pTC->GetCharType() : FX_CHARTYPE_Unknown;
+
+ return dwStatus;
+}
+
+int32_t CFX_TxtBreak::GetBreakPos(std::vector<CFX_Char>& 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_BreakLine* pCurLine,
+ CFX_BreakLine* pNextLine,
+ bool bAllChars) {
+ ASSERT(pCurLine && pNextLine);
+ int32_t iCount = pCurLine->CountChars();
+ if (iCount < 2)
+ return;
+
+ int32_t iEndPos = pCurLine->m_iWidth;
+ std::vector<CFX_Char>& curChars = pCurLine->m_LineChars;
+ int32_t iCharPos = GetBreakPos(curChars, iEndPos, bAllChars, false);
+ if (iCharPos < 0)
+ iCharPos = 0;
+
+ iCharPos++;
+ if (iCharPos >= iCount) {
+ pNextLine->Clear();
+ CFX_Char* pTC = &curChars[iCharPos - 1];
+ pTC->m_nBreakType = FX_LBT_UNKNOWN;
+ return;
+ }
+
+ pNextLine->m_LineChars =
+ std::vector<CFX_Char>(curChars.begin() + iCharPos, curChars.end());
+ curChars.erase(curChars.begin() + iCharPos, curChars.end());
+ pCurLine->m_iWidth = iEndPos;
+ CFX_Char* 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 = CFX_BreakType::None;
+ }
+ pNextLine->m_iWidth = iWidth;
+}
+
+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;
+
+ CFDE_TxtEdtPage* pAccess = pTxtRun->pAccess;
+ const FDE_TEXTEDITPIECE* pIdentity = pTxtRun->pIdentity;
+ const wchar_t* 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;
+ 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;
+ float fFontHeight = fFontSize;
+ float fAscent = fFontHeight * (float)iAscent / (float)iMaxHeight;
+ float fX = rtText.left;
+ float fY;
+ float fCharWidth;
+ float fCharHeight;
+ int32_t iHorScale = pTxtRun->iHorizontalScale;
+ int32_t iVerScale = pTxtRun->iVerticalScale;
+ bool bSkipSpace = pTxtRun->bSkipSpace;
+ FX_FORMCHAR formChars[3];
+ float fYBase;
+
+ if (bRTLPiece)
+ fX = rtText.right();
+
+ fYBase = rtText.top + (rtText.height - fFontSize) / 2.0f;
+ fY = fYBase + fAscent;
+
+ int32_t iCount = 0;
+ int32_t iNext = 0;
+ wchar_t wPrev = 0xFEFF;
+ wchar_t wNext = 0xFEFF;
+ wchar_t wForm = 0xFEFF;
+ wchar_t wLast = 0xFEFF;
+ bool bShadda = false;
+ bool bLam = false;
+ for (int32_t i = 0; i <= iLength; i++) {
+ int32_t iWidth;
+ wchar_t 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;
+ } else if (wch == L'.') {
+ wForm = wch;
+ } else if (wch == L',') {
+ wForm = wch;
+ } else if (bRTLPiece) {
+ wForm = FX_GetMirrorChar(wch, dwProps, bRTLPiece, false);
+ } else {
+ wForm = wch;
+ }
+ if (chartype != FX_CHARTYPE_Combination)
+ bShadda = false;
+ if (chartype < FX_CHARTYPE_ArabicAlef)
+ bLam = false;
+
+ dwProps = FX_GetUnicodeProperties(wForm);
+ 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 = (wchar_t)formChars[j].wForm;
+ iCharWidth = formChars[j].iWidth;
+ if (j > 0) {
+ chartype = FX_CHARTYPE_Combination;
+ wch = wForm;
+ wLast = (wchar_t)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 = 1000;
+
+ fCharWidth = fFontSize * iCharWidth / 1000.0f;
+ fCharHeight = fFontSize * iCharHeight / 1000.0f;
+ if (bRTLPiece && chartype != FX_CHARTYPE_Combination)
+ fX -= fCharWidth;
+
+ if (!bEmptyChar || (bEmptyChar && !bSkipSpace)) {
+ pCharPos->m_Origin = CFX_PointF(fX, fY);
+ if ((dwStyles & FX_LAYOUTSTYLE_CombText) != 0) {
+ int32_t iFormWidth = iCharWidth;
+ pFont->GetCharWidth(wForm, iFormWidth, false);
+ float fOffset = fFontSize * (iCharWidth - iFormWidth) / 2000.0f;
+ 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 * (float)rtBBox.height / (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;
+ pCharPos->m_Origin.x += ptOffset.x;
+ pCharPos->m_Origin.y -= ptOffset.y;
+ }
+ if (!bRTLPiece && chartype != FX_CHARTYPE_Combination)
+ fX += fCharWidth;
+
+ if (!bEmptyChar || (bEmptyChar && !bSkipSpace)) {
+ pCharPos->m_bGlyphAdjust = true;
+ pCharPos->m_AdjustMatrix[0] = -1;
+ pCharPos->m_AdjustMatrix[1] = 0;
+ pCharPos->m_AdjustMatrix[2] = 0;
+ pCharPos->m_AdjustMatrix[3] = 1;
+
+ 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<wchar_t>(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>();
+
+ CFDE_TxtEdtPage* pAccess = pTxtRun->pAccess;
+ const FDE_TEXTEDITPIECE* pIdentity = pTxtRun->pIdentity;
+ const wchar_t* pStr = pTxtRun->wsStr.c_str();
+ int32_t* pWidths = pTxtRun->pWidths;
+ int32_t iLength = pTxtRun->iLength;
+ CFX_RectF rect(*pTxtRun->pRect);
+ float fFontSize = pTxtRun->fFontSize;
+ int32_t iFontSize = FXSYS_round(fFontSize * 20.0f);
+ 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);
+
+ float fLeft = std::max(0.0f, bbox.left * fScale);
+ float fHeight = fabs(bbox.height * fScale);
+ bool bRTLPiece = !!(pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_OddBidiLevel);
+ bool bSingleLine = !!(pTxtRun->dwStyles & FX_LAYOUTSTYLE_SingleLine);
+ bool bCombText = !!(pTxtRun->dwStyles & FX_LAYOUTSTYLE_CombText);
+ wchar_t wch;
+ wchar_t wLineBreakChar = pTxtRun->wLineBreakChar;
+ int32_t iCharSize;
+ float fCharSize;
+ float 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<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;
+ }
+ 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);
+ float fRTLeft = 0, fCharWidth = 0;
+ if (iCharWidth > 0) {
+ fCharWidth = iCharWidth * fScale;
+ fRTLeft = fLeft;
+ if (bCombText)
+ fRTLeft = (rect.width - fCharWidth) / 2.0f;
+ }
+ CFX_RectF rtBBoxF;
+ 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),
+ dwCharStyles(0),
+ pRect(nullptr),
+ wLineBreakChar(L'\n'),
+ bSkipSpace(true) {}
+
+FX_TXTRUN::~FX_TXTRUN() {}
+
+FX_TXTRUN::FX_TXTRUN(const FX_TXTRUN& other) = default;