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824 lines
25 KiB
824 lines
25 KiB
// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "xfa/fgas/layout/cfx_rtfbreak.h"
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#include <algorithm>
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#include "build/build_config.h"
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#include "core/fxcrt/fx_safe_types.h"
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#include "core/fxge/text_char_pos.h"
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#include "third_party/base/numerics/safe_math.h"
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#include "third_party/base/stl_util.h"
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#include "xfa/fgas/font/cfgas_gefont.h"
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#include "xfa/fgas/layout/cfx_char.h"
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#include "xfa/fgas/layout/cfx_textpiece.h"
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#include "xfa/fgas/layout/cfx_textuserdata.h"
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#include "xfa/fgas/layout/fx_arabic.h"
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#include "xfa/fgas/layout/fx_linebreak.h"
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CFX_RTFBreak::CFX_RTFBreak(uint32_t dwLayoutStyles)
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: CFX_Break(dwLayoutStyles),
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m_bPagination(false),
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m_iAlignment(CFX_RTFLineAlignment::Left) {
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SetBreakStatus();
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m_bPagination = !!(m_dwLayoutStyles & FX_LAYOUTSTYLE_Pagination);
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}
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CFX_RTFBreak::~CFX_RTFBreak() {}
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void CFX_RTFBreak::SetLineStartPos(float fLinePos) {
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int32_t iLinePos = FXSYS_roundf(fLinePos * kConversionFactor);
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iLinePos = std::min(iLinePos, m_iLineWidth);
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iLinePos = std::max(iLinePos, m_iLineStart);
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m_pCurLine->m_iStart = iLinePos;
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}
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void CFX_RTFBreak::AddPositionedTab(float fTabPos) {
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int32_t iTabPos = std::min(
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FXSYS_roundf(fTabPos * kConversionFactor) + m_iLineStart, m_iLineWidth);
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auto it = std::lower_bound(m_PositionedTabs.begin(), m_PositionedTabs.end(),
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iTabPos);
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if (it != m_PositionedTabs.end() && *it == iTabPos)
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return;
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m_PositionedTabs.insert(it, iTabPos);
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}
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void CFX_RTFBreak::SetUserData(const RetainPtr<CFX_TextUserData>& pUserData) {
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if (m_pUserData == pUserData)
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return;
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SetBreakStatus();
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m_pUserData = pUserData;
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}
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bool CFX_RTFBreak::GetPositionedTab(int32_t* iTabPos) const {
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auto it = std::upper_bound(m_PositionedTabs.begin(), m_PositionedTabs.end(),
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*iTabPos);
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if (it == m_PositionedTabs.end())
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return false;
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*iTabPos = *it;
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return true;
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}
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CFX_BreakType CFX_RTFBreak::AppendChar(wchar_t wch) {
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ASSERT(m_pCurLine);
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FX_CHARTYPE chartype = FX_GetCharType(wch);
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m_pCurLine->m_LineChars.emplace_back(wch, m_iHorizontalScale,
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m_iVerticalScale);
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CFX_Char* pCurChar = &m_pCurLine->m_LineChars.back();
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pCurChar->m_iFontSize = m_iFontSize;
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pCurChar->m_dwIdentity = m_dwIdentity;
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pCurChar->m_pUserData = m_pUserData;
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CFX_BreakType dwRet1 = CFX_BreakType::None;
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if (chartype != FX_CHARTYPE::kCombination &&
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GetUnifiedCharType(m_eCharType) != GetUnifiedCharType(chartype) &&
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m_eCharType != FX_CHARTYPE::kUnknown &&
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IsGreaterThanLineWidth(m_pCurLine->GetLineEnd()) &&
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(m_eCharType != FX_CHARTYPE::kSpace ||
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chartype != FX_CHARTYPE::kControl)) {
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dwRet1 = EndBreak(CFX_BreakType::Line);
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if (!m_pCurLine->m_LineChars.empty())
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pCurChar = &m_pCurLine->m_LineChars.back();
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}
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CFX_BreakType dwRet2 = CFX_BreakType::None;
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switch (chartype) {
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case FX_CHARTYPE::kTab:
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AppendChar_Tab(pCurChar);
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break;
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case FX_CHARTYPE::kControl:
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dwRet2 = AppendChar_Control(pCurChar);
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break;
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case FX_CHARTYPE::kCombination:
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AppendChar_Combination(pCurChar);
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break;
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case FX_CHARTYPE::kArabicAlef:
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case FX_CHARTYPE::kArabicSpecial:
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case FX_CHARTYPE::kArabicDistortion:
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case FX_CHARTYPE::kArabicNormal:
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case FX_CHARTYPE::kArabicForm:
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case FX_CHARTYPE::kArabic:
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dwRet2 = AppendChar_Arabic(pCurChar);
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break;
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case FX_CHARTYPE::kUnknown:
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case FX_CHARTYPE::kSpace:
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case FX_CHARTYPE::kNumeric:
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case FX_CHARTYPE::kNormal:
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default:
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dwRet2 = AppendChar_Others(pCurChar);
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break;
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}
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m_eCharType = chartype;
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return std::max(dwRet1, dwRet2);
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}
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void CFX_RTFBreak::AppendChar_Combination(CFX_Char* pCurChar) {
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FX_SAFE_INT32 iCharWidth = 0;
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int32_t iCharWidthOut;
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if (m_pFont && m_pFont->GetCharWidth(pCurChar->char_code(), &iCharWidthOut))
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iCharWidth = iCharWidthOut;
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iCharWidth *= m_iFontSize;
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iCharWidth *= m_iHorizontalScale;
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iCharWidth /= 100;
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CFX_Char* pLastChar = GetLastChar(0, false, true);
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if (pLastChar && pLastChar->GetCharType() > FX_CHARTYPE::kCombination)
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iCharWidth *= -1;
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else
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m_eCharType = FX_CHARTYPE::kCombination;
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int32_t iCharWidthValid = iCharWidth.ValueOrDefault(0);
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pCurChar->m_iCharWidth = iCharWidthValid;
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if (iCharWidthValid > 0) {
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FX_SAFE_INT32 checked_width = m_pCurLine->m_iWidth;
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checked_width += iCharWidthValid;
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if (!checked_width.IsValid())
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return;
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m_pCurLine->m_iWidth = checked_width.ValueOrDie();
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}
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}
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void CFX_RTFBreak::AppendChar_Tab(CFX_Char* pCurChar) {
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if (!(m_dwLayoutStyles & FX_LAYOUTSTYLE_ExpandTab))
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return;
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int32_t& iLineWidth = m_pCurLine->m_iWidth;
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int32_t iCharWidth = iLineWidth;
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FX_SAFE_INT32 iSafeCharWidth;
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if (GetPositionedTab(&iCharWidth)) {
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iSafeCharWidth = iCharWidth;
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} else {
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// Tab width is >= 160000, so this part does not need to be checked.
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ASSERT(m_iTabWidth >= kMinimumTabWidth);
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iSafeCharWidth = iLineWidth / m_iTabWidth + 1;
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iSafeCharWidth *= m_iTabWidth;
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}
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iSafeCharWidth -= iLineWidth;
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iCharWidth = iSafeCharWidth.ValueOrDefault(0);
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pCurChar->m_iCharWidth = iCharWidth;
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iLineWidth += iCharWidth;
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}
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CFX_BreakType CFX_RTFBreak::AppendChar_Control(CFX_Char* pCurChar) {
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CFX_BreakType dwRet2 = CFX_BreakType::None;
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switch (pCurChar->char_code()) {
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case L'\v':
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case 0x2028:
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dwRet2 = CFX_BreakType::Line;
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break;
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case L'\f':
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dwRet2 = CFX_BreakType::Page;
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break;
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case 0x2029:
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dwRet2 = CFX_BreakType::Paragraph;
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break;
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default:
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if (pCurChar->char_code() == m_wParagraphBreakChar)
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dwRet2 = CFX_BreakType::Paragraph;
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break;
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}
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if (dwRet2 != CFX_BreakType::None)
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dwRet2 = EndBreak(dwRet2);
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return dwRet2;
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}
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CFX_BreakType CFX_RTFBreak::AppendChar_Arabic(CFX_Char* pCurChar) {
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m_pCurLine->IncrementArabicCharCount();
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CFX_Char* pLastChar = nullptr;
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wchar_t wForm;
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bool bAlef = false;
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if (m_eCharType >= FX_CHARTYPE::kArabicAlef &&
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m_eCharType <= FX_CHARTYPE::kArabicDistortion) {
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pLastChar = GetLastChar(1, false, true);
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if (pLastChar) {
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m_pCurLine->m_iWidth -= pLastChar->m_iCharWidth;
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CFX_Char* pPrevChar = GetLastChar(2, false, true);
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wForm = pdfium::arabic::GetFormChar(pLastChar, pPrevChar, pCurChar);
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bAlef = (wForm == 0xFEFF &&
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pLastChar->GetCharType() == FX_CHARTYPE::kArabicAlef);
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FX_SAFE_INT32 iCharWidth;
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int32_t iCharWidthOut;
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if (m_pFont &&
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(m_pFont->GetCharWidth(wForm, &iCharWidthOut) ||
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m_pFont->GetCharWidth(pLastChar->char_code(), &iCharWidthOut))) {
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iCharWidth = iCharWidthOut;
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} else {
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iCharWidth = 0;
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}
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iCharWidth *= m_iFontSize;
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iCharWidth *= m_iHorizontalScale;
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iCharWidth /= 100;
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int iCharWidthValid = iCharWidth.ValueOrDefault(0);
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pLastChar->m_iCharWidth = iCharWidthValid;
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FX_SAFE_INT32 checked_width = m_pCurLine->m_iWidth;
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checked_width += iCharWidthValid;
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if (!checked_width.IsValid())
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return CFX_BreakType::None;
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m_pCurLine->m_iWidth = checked_width.ValueOrDie();
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iCharWidth = 0;
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}
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}
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wForm = pdfium::arabic::GetFormChar(pCurChar, bAlef ? nullptr : pLastChar,
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nullptr);
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FX_SAFE_INT32 iCharWidth;
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int32_t iCharWidthOut;
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if (m_pFont &&
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(m_pFont->GetCharWidth(wForm, &iCharWidthOut) ||
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m_pFont->GetCharWidth(pCurChar->char_code(), &iCharWidthOut))) {
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iCharWidth = iCharWidthOut;
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} else {
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iCharWidth = 0;
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}
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iCharWidth *= m_iFontSize;
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iCharWidth *= m_iHorizontalScale;
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iCharWidth /= 100;
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int iCharWidthValid = iCharWidth.ValueOrDefault(0);
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pCurChar->m_iCharWidth = iCharWidthValid;
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FX_SAFE_INT32 checked_width = m_pCurLine->m_iWidth;
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checked_width += iCharWidthValid;
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if (!checked_width.IsValid())
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return CFX_BreakType::None;
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m_pCurLine->m_iWidth = checked_width.ValueOrDie();
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if (IsGreaterThanLineWidth(m_pCurLine->GetLineEnd()))
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return EndBreak(CFX_BreakType::Line);
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return CFX_BreakType::None;
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}
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CFX_BreakType CFX_RTFBreak::AppendChar_Others(CFX_Char* pCurChar) {
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FX_CHARTYPE chartype = pCurChar->GetCharType();
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wchar_t wForm = pCurChar->char_code();
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FX_SAFE_INT32 iCharWidth;
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int32_t iCharWidthOut;
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if (m_pFont && m_pFont->GetCharWidth(wForm, &iCharWidthOut))
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iCharWidth = iCharWidthOut;
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else
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iCharWidth = 0;
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iCharWidth *= m_iFontSize;
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iCharWidth *= m_iHorizontalScale;
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iCharWidth /= 100;
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iCharWidth += m_iCharSpace;
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int iCharWidthValid = iCharWidth.ValueOrDefault(0);
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pCurChar->m_iCharWidth = iCharWidthValid;
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FX_SAFE_INT32 checked_width = m_pCurLine->m_iWidth;
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checked_width += iCharWidthValid;
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if (!checked_width.IsValid())
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return CFX_BreakType::None;
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m_pCurLine->m_iWidth = checked_width.ValueOrDie();
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if (chartype != FX_CHARTYPE::kSpace &&
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IsGreaterThanLineWidth(m_pCurLine->GetLineEnd())) {
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return EndBreak(CFX_BreakType::Line);
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}
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return CFX_BreakType::None;
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}
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CFX_BreakType CFX_RTFBreak::EndBreak(CFX_BreakType dwStatus) {
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ASSERT(dwStatus != CFX_BreakType::None);
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++m_dwIdentity;
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if (!m_pCurLine->m_LinePieces.empty()) {
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if (dwStatus != CFX_BreakType::Piece)
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m_pCurLine->m_LinePieces.back().m_dwStatus = dwStatus;
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return m_pCurLine->m_LinePieces.back().m_dwStatus;
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}
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if (HasLine()) {
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if (m_Lines[m_iReadyLineIndex].m_LinePieces.empty())
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return CFX_BreakType::None;
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if (dwStatus != CFX_BreakType::Piece)
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m_Lines[m_iReadyLineIndex].m_LinePieces.back().m_dwStatus = dwStatus;
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return m_Lines[m_iReadyLineIndex].m_LinePieces.back().m_dwStatus;
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}
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if (m_pCurLine->m_LineChars.empty())
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return CFX_BreakType::None;
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CFX_Char* tc = m_pCurLine->GetChar(m_pCurLine->m_LineChars.size() - 1);
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tc->m_dwStatus = dwStatus;
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if (dwStatus == CFX_BreakType::Piece)
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return dwStatus;
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m_iReadyLineIndex = m_pCurLine == &m_Lines[0] ? 0 : 1;
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CFX_BreakLine* pNextLine = &m_Lines[1 - m_iReadyLineIndex];
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bool bAllChars = m_iAlignment == CFX_RTFLineAlignment::Justified ||
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m_iAlignment == CFX_RTFLineAlignment::Distributed;
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if (!EndBreak_SplitLine(pNextLine, bAllChars, dwStatus)) {
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std::deque<FX_TPO> tpos;
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EndBreak_BidiLine(&tpos, dwStatus);
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if (!m_bPagination && m_iAlignment != CFX_RTFLineAlignment::Left)
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EndBreak_Alignment(tpos, bAllChars, dwStatus);
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}
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m_pCurLine = pNextLine;
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m_pCurLine->m_iStart = m_iLineStart;
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CFX_Char* pTC = GetLastChar(0, false, true);
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m_eCharType = pTC ? pTC->GetCharType() : FX_CHARTYPE::kUnknown;
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return dwStatus;
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}
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bool CFX_RTFBreak::EndBreak_SplitLine(CFX_BreakLine* pNextLine,
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bool bAllChars,
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CFX_BreakType dwStatus) {
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bool bDone = false;
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if (IsGreaterThanLineWidth(m_pCurLine->GetLineEnd())) {
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const CFX_Char* tc =
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m_pCurLine->GetChar(m_pCurLine->m_LineChars.size() - 1);
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switch (tc->GetCharType()) {
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case FX_CHARTYPE::kTab:
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case FX_CHARTYPE::kControl:
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case FX_CHARTYPE::kSpace:
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break;
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default:
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SplitTextLine(m_pCurLine.Get(), pNextLine, !m_bPagination && bAllChars);
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bDone = true;
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break;
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}
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}
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if (!m_bPagination) {
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if (bAllChars && !bDone) {
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int32_t endPos = m_pCurLine->GetLineEnd();
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GetBreakPos(m_pCurLine->m_LineChars, bAllChars, true, &endPos);
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}
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return false;
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}
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const CFX_Char* pCurChars = m_pCurLine->m_LineChars.data();
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CFX_BreakPiece tp;
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tp.m_pChars = &m_pCurLine->m_LineChars;
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bool bNew = true;
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uint32_t dwIdentity = static_cast<uint32_t>(-1);
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int32_t iLast = pdfium::CollectionSize<int32_t>(m_pCurLine->m_LineChars) - 1;
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int32_t j = 0;
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for (int32_t i = 0; i <= iLast;) {
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const CFX_Char* pTC = pCurChars + i;
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if (bNew) {
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tp.m_iStartChar = i;
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tp.m_iStartPos += tp.m_iWidth;
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tp.m_iWidth = 0;
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tp.m_dwStatus = pTC->m_dwStatus;
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tp.m_iFontSize = pTC->m_iFontSize;
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tp.m_iHorizontalScale = pTC->horizonal_scale();
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tp.m_iVerticalScale = pTC->vertical_scale();
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dwIdentity = pTC->m_dwIdentity;
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tp.m_dwIdentity = dwIdentity;
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tp.m_pUserData = pTC->m_pUserData;
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j = i;
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bNew = false;
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}
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if (i == iLast || pTC->m_dwStatus != CFX_BreakType::None ||
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pTC->m_dwIdentity != dwIdentity) {
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tp.m_iChars = i - j;
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if (pTC->m_dwIdentity == dwIdentity) {
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tp.m_dwStatus = pTC->m_dwStatus;
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tp.m_iWidth += pTC->m_iCharWidth;
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tp.m_iChars += 1;
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++i;
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}
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m_pCurLine->m_LinePieces.push_back(tp);
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bNew = true;
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} else {
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tp.m_iWidth += pTC->m_iCharWidth;
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++i;
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}
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}
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return true;
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}
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void CFX_RTFBreak::EndBreak_BidiLine(std::deque<FX_TPO>* tpos,
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CFX_BreakType dwStatus) {
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CFX_Char* pTC;
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std::vector<CFX_Char>& chars = m_pCurLine->m_LineChars;
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if (!m_bPagination && m_pCurLine->HasArabicChar()) {
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size_t iBidiNum = 0;
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for (size_t i = 0; i < m_pCurLine->m_LineChars.size(); ++i) {
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pTC = &chars[i];
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pTC->m_iBidiPos = static_cast<int32_t>(i);
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if (pTC->GetCharType() != FX_CHARTYPE::kControl)
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iBidiNum = i;
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if (i == 0)
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pTC->m_iBidiLevel = 1;
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}
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CFX_Char::BidiLine(&chars, iBidiNum + 1);
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} else {
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for (size_t i = 0; i < m_pCurLine->m_LineChars.size(); ++i) {
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pTC = &chars[i];
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pTC->m_iBidiLevel = 0;
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pTC->m_iBidiPos = 0;
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pTC->m_iBidiOrder = 0;
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}
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}
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CFX_BreakPiece tp;
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tp.m_dwStatus = CFX_BreakType::Piece;
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tp.m_iStartPos = m_pCurLine->m_iStart;
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tp.m_pChars = &chars;
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|
int32_t iBidiLevel = -1;
|
|
int32_t iCharWidth;
|
|
FX_TPO tpo;
|
|
uint32_t dwIdentity = static_cast<uint32_t>(-1);
|
|
int32_t i = 0;
|
|
int32_t j = 0;
|
|
int32_t iCount = pdfium::CollectionSize<int32_t>(m_pCurLine->m_LineChars);
|
|
while (i < iCount) {
|
|
pTC = &chars[i];
|
|
if (iBidiLevel < 0) {
|
|
iBidiLevel = pTC->m_iBidiLevel;
|
|
iCharWidth = pTC->m_iCharWidth;
|
|
tp.m_iWidth = iCharWidth < 1 ? 0 : iCharWidth;
|
|
tp.m_iBidiLevel = iBidiLevel;
|
|
tp.m_iBidiPos = pTC->m_iBidiOrder;
|
|
tp.m_iFontSize = pTC->m_iFontSize;
|
|
tp.m_iHorizontalScale = pTC->horizonal_scale();
|
|
tp.m_iVerticalScale = pTC->vertical_scale();
|
|
dwIdentity = pTC->m_dwIdentity;
|
|
tp.m_dwIdentity = dwIdentity;
|
|
tp.m_pUserData = pTC->m_pUserData;
|
|
tp.m_dwStatus = CFX_BreakType::Piece;
|
|
++i;
|
|
} else if (iBidiLevel != pTC->m_iBidiLevel ||
|
|
pTC->m_dwIdentity != dwIdentity) {
|
|
tp.m_iChars = i - tp.m_iStartChar;
|
|
m_pCurLine->m_LinePieces.push_back(tp);
|
|
|
|
tp.m_iStartPos += tp.m_iWidth;
|
|
tp.m_iStartChar = i;
|
|
tpo.index = j++;
|
|
tpo.pos = tp.m_iBidiPos;
|
|
tpos->push_back(tpo);
|
|
iBidiLevel = -1;
|
|
} else {
|
|
iCharWidth = pTC->m_iCharWidth;
|
|
if (iCharWidth > 0)
|
|
tp.m_iWidth += iCharWidth;
|
|
++i;
|
|
}
|
|
}
|
|
|
|
if (i > tp.m_iStartChar) {
|
|
tp.m_dwStatus = dwStatus;
|
|
tp.m_iChars = i - tp.m_iStartChar;
|
|
m_pCurLine->m_LinePieces.push_back(tp);
|
|
|
|
tpo.index = j;
|
|
tpo.pos = tp.m_iBidiPos;
|
|
tpos->push_back(tpo);
|
|
}
|
|
|
|
std::sort(tpos->begin(), tpos->end());
|
|
int32_t iStartPos = m_pCurLine->m_iStart;
|
|
for (const auto& it : *tpos) {
|
|
CFX_BreakPiece& ttp = m_pCurLine->m_LinePieces[it.index];
|
|
ttp.m_iStartPos = iStartPos;
|
|
iStartPos += ttp.m_iWidth;
|
|
}
|
|
}
|
|
|
|
void CFX_RTFBreak::EndBreak_Alignment(const std::deque<FX_TPO>& tpos,
|
|
bool bAllChars,
|
|
CFX_BreakType dwStatus) {
|
|
int32_t iNetWidth = m_pCurLine->m_iWidth;
|
|
int32_t iGapChars = 0;
|
|
bool bFind = false;
|
|
for (auto it = tpos.rbegin(); it != tpos.rend(); it++) {
|
|
CFX_BreakPiece& ttp = m_pCurLine->m_LinePieces[it->index];
|
|
if (!bFind)
|
|
iNetWidth = ttp.GetEndPos();
|
|
|
|
bool bArabic = FX_IsOdd(ttp.m_iBidiLevel);
|
|
int32_t j = bArabic ? 0 : ttp.m_iChars - 1;
|
|
while (j > -1 && j < ttp.m_iChars) {
|
|
const CFX_Char* tc = ttp.GetChar(j);
|
|
if (tc->m_eLineBreakType == FX_LINEBREAKTYPE::kDIRECT_BRK)
|
|
++iGapChars;
|
|
|
|
if (!bFind || !bAllChars) {
|
|
FX_CHARTYPE dwCharType = tc->GetCharType();
|
|
if (dwCharType == FX_CHARTYPE::kSpace ||
|
|
dwCharType == FX_CHARTYPE::kControl) {
|
|
if (!bFind) {
|
|
int32_t iCharWidth = tc->m_iCharWidth;
|
|
if (bAllChars && iCharWidth > 0)
|
|
iNetWidth -= iCharWidth;
|
|
}
|
|
} else {
|
|
bFind = true;
|
|
if (!bAllChars)
|
|
break;
|
|
}
|
|
}
|
|
j += bArabic ? 1 : -1;
|
|
}
|
|
if (!bAllChars && bFind)
|
|
break;
|
|
}
|
|
|
|
int32_t iOffset = m_iLineWidth - iNetWidth;
|
|
if (iGapChars > 0 && (m_iAlignment == CFX_RTFLineAlignment::Distributed ||
|
|
(m_iAlignment == CFX_RTFLineAlignment::Justified &&
|
|
dwStatus != CFX_BreakType::Paragraph))) {
|
|
int32_t iStart = -1;
|
|
for (const auto& tpo : tpos) {
|
|
CFX_BreakPiece& ttp = m_pCurLine->m_LinePieces[tpo.index];
|
|
if (iStart < 0)
|
|
iStart = ttp.m_iStartPos;
|
|
else
|
|
ttp.m_iStartPos = iStart;
|
|
|
|
for (int32_t j = 0; j < ttp.m_iChars; ++j) {
|
|
CFX_Char* tc = ttp.GetChar(j);
|
|
if (tc->m_eLineBreakType != FX_LINEBREAKTYPE::kDIRECT_BRK ||
|
|
tc->m_iCharWidth < 0) {
|
|
continue;
|
|
}
|
|
int32_t k = iOffset / iGapChars;
|
|
tc->m_iCharWidth += k;
|
|
ttp.m_iWidth += k;
|
|
iOffset -= k;
|
|
--iGapChars;
|
|
if (iGapChars < 1)
|
|
break;
|
|
}
|
|
iStart += ttp.m_iWidth;
|
|
}
|
|
} else if (m_iAlignment == CFX_RTFLineAlignment::Right ||
|
|
m_iAlignment == CFX_RTFLineAlignment::Center) {
|
|
if (m_iAlignment == CFX_RTFLineAlignment::Center)
|
|
iOffset /= 2;
|
|
if (iOffset > 0) {
|
|
for (auto& ttp : m_pCurLine->m_LinePieces)
|
|
ttp.m_iStartPos += iOffset;
|
|
}
|
|
}
|
|
}
|
|
|
|
int32_t CFX_RTFBreak::GetBreakPos(std::vector<CFX_Char>& tca,
|
|
bool bAllChars,
|
|
bool bOnlyBrk,
|
|
int32_t* pEndPos) {
|
|
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 (*pEndPos <= m_iLineWidth) {
|
|
if (!bAllChars)
|
|
return iLength;
|
|
|
|
iBreak = iLength;
|
|
iBreakPos = *pEndPos;
|
|
}
|
|
|
|
CFX_Char* pCharArray = tca.data();
|
|
CFX_Char* pCur = pCharArray + iLength;
|
|
--iLength;
|
|
if (bAllChars)
|
|
pCur->m_eLineBreakType = FX_LINEBREAKTYPE::kUNKNOWN;
|
|
|
|
FX_BREAKPROPERTY nNext = FX_GetBreakProperty(pCur->char_code());
|
|
int32_t iCharWidth = pCur->m_iCharWidth;
|
|
if (iCharWidth > 0)
|
|
*pEndPos -= iCharWidth;
|
|
|
|
while (iLength >= 0) {
|
|
pCur = pCharArray + iLength;
|
|
FX_BREAKPROPERTY nCur = FX_GetBreakProperty(pCur->char_code());
|
|
bool bNeedBreak = false;
|
|
FX_LINEBREAKTYPE eType;
|
|
if (nCur == FX_BREAKPROPERTY::kTB) {
|
|
bNeedBreak = true;
|
|
eType = nNext == FX_BREAKPROPERTY::kTB
|
|
? FX_LINEBREAKTYPE::kPROHIBITED_BRK
|
|
: GetLineBreakTypeFromPair(nCur, nNext);
|
|
} else {
|
|
if (nCur == FX_BREAKPROPERTY::kSP)
|
|
bNeedBreak = true;
|
|
|
|
eType = nNext == FX_BREAKPROPERTY::kSP
|
|
? FX_LINEBREAKTYPE::kPROHIBITED_BRK
|
|
: GetLineBreakTypeFromPair(nCur, nNext);
|
|
}
|
|
if (bAllChars)
|
|
pCur->m_eLineBreakType = eType;
|
|
|
|
if (!bOnlyBrk) {
|
|
iCharWidth = pCur->m_iCharWidth;
|
|
if (*pEndPos <= m_iLineWidth || bNeedBreak) {
|
|
if (eType == FX_LINEBREAKTYPE::kDIRECT_BRK && iBreak < 0) {
|
|
iBreak = iLength;
|
|
iBreakPos = *pEndPos;
|
|
if (!bAllChars)
|
|
return iLength;
|
|
} else if (eType == FX_LINEBREAKTYPE::kINDIRECT_BRK && iIndirect < 0) {
|
|
iIndirect = iLength;
|
|
iIndirectPos = *pEndPos;
|
|
}
|
|
if (iLast < 0) {
|
|
iLast = iLength;
|
|
iLastPos = *pEndPos;
|
|
}
|
|
}
|
|
if (iCharWidth > 0)
|
|
*pEndPos -= iCharWidth;
|
|
}
|
|
nNext = nCur;
|
|
--iLength;
|
|
}
|
|
if (bOnlyBrk)
|
|
return 0;
|
|
|
|
if (iBreak > -1) {
|
|
*pEndPos = iBreakPos;
|
|
return iBreak;
|
|
}
|
|
if (iIndirect > -1) {
|
|
*pEndPos = iIndirectPos;
|
|
return iIndirect;
|
|
}
|
|
if (iLast > -1) {
|
|
*pEndPos = iLastPos;
|
|
return iLast;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void CFX_RTFBreak::SplitTextLine(CFX_BreakLine* pCurLine,
|
|
CFX_BreakLine* pNextLine,
|
|
bool bAllChars) {
|
|
ASSERT(pCurLine);
|
|
ASSERT(pNextLine);
|
|
|
|
if (pCurLine->m_LineChars.size() < 2)
|
|
return;
|
|
|
|
int32_t iEndPos = pCurLine->GetLineEnd();
|
|
std::vector<CFX_Char>& curChars = pCurLine->m_LineChars;
|
|
int32_t iCharPos = GetBreakPos(curChars, bAllChars, false, &iEndPos);
|
|
if (iCharPos < 0)
|
|
iCharPos = 0;
|
|
|
|
++iCharPos;
|
|
if (iCharPos >= pdfium::CollectionSize<int32_t>(pCurLine->m_LineChars)) {
|
|
pNextLine->Clear();
|
|
curChars[iCharPos - 1].m_eLineBreakType = FX_LINEBREAKTYPE::kUNKNOWN;
|
|
return;
|
|
}
|
|
|
|
pNextLine->m_LineChars =
|
|
std::vector<CFX_Char>(curChars.begin() + iCharPos, curChars.end());
|
|
curChars.erase(curChars.begin() + iCharPos, curChars.end());
|
|
pNextLine->m_iStart = pCurLine->m_iStart;
|
|
pNextLine->m_iWidth = pCurLine->GetLineEnd() - iEndPos;
|
|
pCurLine->m_iWidth = iEndPos;
|
|
curChars[iCharPos - 1].m_eLineBreakType = FX_LINEBREAKTYPE::kUNKNOWN;
|
|
|
|
for (size_t i = 0; i < pNextLine->m_LineChars.size(); ++i) {
|
|
if (pNextLine->m_LineChars[i].GetCharType() >= FX_CHARTYPE::kArabicAlef) {
|
|
pCurLine->DecrementArabicCharCount();
|
|
pNextLine->IncrementArabicCharCount();
|
|
}
|
|
pNextLine->m_LineChars[i].m_dwStatus = CFX_BreakType::None;
|
|
}
|
|
}
|
|
|
|
size_t CFX_RTFBreak::GetDisplayPos(const CFX_TextPiece* pPiece,
|
|
std::vector<TextCharPos>* pCharPos) const {
|
|
ASSERT(pPiece->iChars > 0);
|
|
ASSERT(pPiece->pFont);
|
|
|
|
RetainPtr<CFGAS_GEFont> pFont = pPiece->pFont;
|
|
CFX_RectF rtText(pPiece->rtPiece);
|
|
bool bRTLPiece = FX_IsOdd(pPiece->iBidiLevel);
|
|
float fFontSize = pPiece->fFontSize;
|
|
int32_t iFontSize = FXSYS_roundf(fFontSize * 20.0f);
|
|
if (iFontSize == 0)
|
|
return 0;
|
|
|
|
int32_t iAscent = pFont->GetAscent();
|
|
int32_t iDescent = pFont->GetDescent();
|
|
int32_t iMaxHeight = iAscent - iDescent;
|
|
float fFontHeight = fFontSize;
|
|
float fAscent = fFontHeight * static_cast<float>(iAscent) /
|
|
static_cast<float>(iMaxHeight);
|
|
wchar_t wPrev = 0xFEFF;
|
|
wchar_t wNext;
|
|
float fX = rtText.left;
|
|
int32_t iHorScale = pPiece->iHorScale;
|
|
int32_t iVerScale = pPiece->iVerScale;
|
|
if (bRTLPiece)
|
|
fX = rtText.right();
|
|
|
|
float fY = rtText.top + fAscent;
|
|
size_t szCount = 0;
|
|
for (int32_t i = 0; i < pPiece->iChars; ++i) {
|
|
TextCharPos& current_char_pos = (*pCharPos)[szCount];
|
|
wchar_t wch = pPiece->szText[i];
|
|
int32_t iWidth = pPiece->Widths[i];
|
|
FX_CHARTYPE dwCharType = FX_GetCharType(wch);
|
|
if (iWidth == 0) {
|
|
if (dwCharType == FX_CHARTYPE::kArabicAlef)
|
|
wPrev = 0xFEFF;
|
|
continue;
|
|
}
|
|
|
|
uint32_t iCharWidth = abs(iWidth);
|
|
const bool bEmptyChar = (dwCharType >= FX_CHARTYPE::kTab &&
|
|
dwCharType <= FX_CHARTYPE::kControl);
|
|
if (!bEmptyChar)
|
|
++szCount;
|
|
|
|
iCharWidth /= iFontSize;
|
|
wchar_t wForm = wch;
|
|
if (dwCharType >= FX_CHARTYPE::kArabicAlef) {
|
|
if (i + 1 < pPiece->iChars) {
|
|
wNext = pPiece->szText[i + 1];
|
|
if (pPiece->Widths[i + 1] < 0 && i + 2 < pPiece->iChars)
|
|
wNext = pPiece->szText[i + 2];
|
|
} else {
|
|
wNext = 0xFEFF;
|
|
}
|
|
wForm = pdfium::arabic::GetFormChar(wch, wPrev, wNext);
|
|
} else if (bRTLPiece) {
|
|
wForm = FX_GetMirrorChar(wch);
|
|
}
|
|
|
|
if (!bEmptyChar) {
|
|
current_char_pos.m_GlyphIndex = pFont->GetGlyphIndex(wForm);
|
|
if (current_char_pos.m_GlyphIndex == 0xFFFF)
|
|
current_char_pos.m_GlyphIndex = pFont->GetGlyphIndex(wch);
|
|
#if defined(OS_MACOSX)
|
|
current_char_pos.m_ExtGID = current_char_pos.m_GlyphIndex;
|
|
#endif
|
|
current_char_pos.m_FontCharWidth = iCharWidth;
|
|
}
|
|
|
|
float fCharWidth = fFontSize * iCharWidth / 1000.0f;
|
|
if (bRTLPiece && dwCharType != FX_CHARTYPE::kCombination)
|
|
fX -= fCharWidth;
|
|
|
|
if (!bEmptyChar)
|
|
current_char_pos.m_Origin = CFX_PointF(fX, fY);
|
|
if (!bRTLPiece && dwCharType != FX_CHARTYPE::kCombination)
|
|
fX += fCharWidth;
|
|
|
|
if (!bEmptyChar) {
|
|
current_char_pos.m_bGlyphAdjust = true;
|
|
current_char_pos.m_AdjustMatrix[0] = -1;
|
|
current_char_pos.m_AdjustMatrix[1] = 0;
|
|
current_char_pos.m_AdjustMatrix[2] = 0;
|
|
current_char_pos.m_AdjustMatrix[3] = 1;
|
|
current_char_pos.m_Origin.y += fAscent * iVerScale / 100.0f;
|
|
current_char_pos.m_Origin.y -= fAscent;
|
|
|
|
if (iHorScale != 100 || iVerScale != 100) {
|
|
current_char_pos.m_AdjustMatrix[0] =
|
|
current_char_pos.m_AdjustMatrix[0] * iHorScale / 100.0f;
|
|
current_char_pos.m_AdjustMatrix[1] =
|
|
current_char_pos.m_AdjustMatrix[1] * iHorScale / 100.0f;
|
|
current_char_pos.m_AdjustMatrix[2] =
|
|
current_char_pos.m_AdjustMatrix[2] * iVerScale / 100.0f;
|
|
current_char_pos.m_AdjustMatrix[3] =
|
|
current_char_pos.m_AdjustMatrix[3] * iVerScale / 100.0f;
|
|
}
|
|
}
|
|
if (iWidth > 0)
|
|
wPrev = wch;
|
|
}
|
|
return szCount;
|
|
}
|