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-rw-r--r--core/fpdfdoc/ctypeset.cpp496
1 files changed, 496 insertions, 0 deletions
diff --git a/core/fpdfdoc/ctypeset.cpp b/core/fpdfdoc/ctypeset.cpp
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+++ b/core/fpdfdoc/ctypeset.cpp
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+// Copyright 2016 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 "core/fpdfdoc/ctypeset.h"
+
+#include <algorithm>
+
+#include "core/fpdfdoc/csection.h"
+#include "core/fpdfdoc/cpvt_wordinfo.h"
+
+namespace {
+
+const uint8_t special_chars[128] = {
+ 0x00, 0x0C, 0x08, 0x0C, 0x08, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x08, 0x00,
+ 0x10, 0x00, 0x00, 0x28, 0x0C, 0x08, 0x00, 0x00, 0x28, 0x28, 0x28, 0x28,
+ 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x08, 0x08,
+ 0x00, 0x00, 0x00, 0x08, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x0C, 0x00, 0x08, 0x00, 0x00,
+ 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x0C, 0x00, 0x08, 0x00, 0x00,
+};
+
+bool IsLatin(uint16_t word) {
+ if (word <= 0x007F)
+ return !!(special_chars[word] & 0x01);
+
+ return ((word >= 0x00C0 && word <= 0x00FF) ||
+ (word >= 0x0100 && word <= 0x024F) ||
+ (word >= 0x1E00 && word <= 0x1EFF) ||
+ (word >= 0x2C60 && word <= 0x2C7F) ||
+ (word >= 0xA720 && word <= 0xA7FF) ||
+ (word >= 0xFF21 && word <= 0xFF3A) ||
+ (word >= 0xFF41 && word <= 0xFF5A));
+}
+
+bool IsDigit(uint32_t word) {
+ return word >= 0x0030 && word <= 0x0039;
+}
+
+bool IsCJK(uint32_t word) {
+ if ((word >= 0x1100 && word <= 0x11FF) ||
+ (word >= 0x2E80 && word <= 0x2FFF) ||
+ (word >= 0x3040 && word <= 0x9FBF) ||
+ (word >= 0xAC00 && word <= 0xD7AF) ||
+ (word >= 0xF900 && word <= 0xFAFF) ||
+ (word >= 0xFE30 && word <= 0xFE4F) ||
+ (word >= 0x20000 && word <= 0x2A6DF) ||
+ (word >= 0x2F800 && word <= 0x2FA1F)) {
+ return true;
+ }
+ if (word >= 0x3000 && word <= 0x303F) {
+ return (
+ word == 0x3005 || word == 0x3006 || word == 0x3021 || word == 0x3022 ||
+ word == 0x3023 || word == 0x3024 || word == 0x3025 || word == 0x3026 ||
+ word == 0x3027 || word == 0x3028 || word == 0x3029 || word == 0x3031 ||
+ word == 0x3032 || word == 0x3033 || word == 0x3034 || word == 0x3035);
+ }
+ return word >= 0xFF66 && word <= 0xFF9D;
+}
+
+bool IsPunctuation(uint32_t word) {
+ if (word <= 0x007F)
+ return !!(special_chars[word] & 0x08);
+
+ if (word >= 0x0080 && word <= 0x00FF) {
+ return (word == 0x0082 || word == 0x0084 || word == 0x0085 ||
+ word == 0x0091 || word == 0x0092 || word == 0x0093 ||
+ word <= 0x0094 || word == 0x0096 || word == 0x00B4 ||
+ word == 0x00B8);
+ }
+
+ if (word >= 0x2000 && word <= 0x206F) {
+ return (
+ word == 0x2010 || word == 0x2011 || word == 0x2012 || word == 0x2013 ||
+ word == 0x2018 || word == 0x2019 || word == 0x201A || word == 0x201B ||
+ word == 0x201C || word == 0x201D || word == 0x201E || word == 0x201F ||
+ word == 0x2032 || word == 0x2033 || word == 0x2034 || word == 0x2035 ||
+ word == 0x2036 || word == 0x2037 || word == 0x203C || word == 0x203D ||
+ word == 0x203E || word == 0x2044);
+ }
+
+ if (word >= 0x3000 && word <= 0x303F) {
+ return (
+ word == 0x3001 || word == 0x3002 || word == 0x3003 || word == 0x3005 ||
+ word == 0x3009 || word == 0x300A || word == 0x300B || word == 0x300C ||
+ word == 0x300D || word == 0x300F || word == 0x300E || word == 0x3010 ||
+ word == 0x3011 || word == 0x3014 || word == 0x3015 || word == 0x3016 ||
+ word == 0x3017 || word == 0x3018 || word == 0x3019 || word == 0x301A ||
+ word == 0x301B || word == 0x301D || word == 0x301E || word == 0x301F);
+ }
+
+ if (word >= 0xFE50 && word <= 0xFE6F)
+ return (word >= 0xFE50 && word <= 0xFE5E) || word == 0xFE63;
+
+ if (word >= 0xFF00 && word <= 0xFFEF) {
+ return (
+ word == 0xFF01 || word == 0xFF02 || word == 0xFF07 || word == 0xFF08 ||
+ word == 0xFF09 || word == 0xFF0C || word == 0xFF0E || word == 0xFF0F ||
+ word == 0xFF1A || word == 0xFF1B || word == 0xFF1F || word == 0xFF3B ||
+ word == 0xFF3D || word == 0xFF40 || word == 0xFF5B || word == 0xFF5C ||
+ word == 0xFF5D || word == 0xFF61 || word == 0xFF62 || word == 0xFF63 ||
+ word == 0xFF64 || word == 0xFF65 || word == 0xFF9E || word == 0xFF9F);
+ }
+
+ return false;
+}
+
+bool IsConnectiveSymbol(uint32_t word) {
+ return word <= 0x007F && (special_chars[word] & 0x20);
+}
+
+bool IsOpenStylePunctuation(uint32_t word) {
+ if (word <= 0x007F)
+ return !!(special_chars[word] & 0x04);
+
+ return (word == 0x300A || word == 0x300C || word == 0x300E ||
+ word == 0x3010 || word == 0x3014 || word == 0x3016 ||
+ word == 0x3018 || word == 0x301A || word == 0xFF08 ||
+ word == 0xFF3B || word == 0xFF5B || word == 0xFF62);
+}
+
+bool IsCurrencySymbol(uint16_t word) {
+ return (word == 0x0024 || word == 0x0080 || word == 0x00A2 ||
+ word == 0x00A3 || word == 0x00A4 || word == 0x00A5 ||
+ (word >= 0x20A0 && word <= 0x20CF) || word == 0xFE69 ||
+ word == 0xFF04 || word == 0xFFE0 || word == 0xFFE1 ||
+ word == 0xFFE5 || word == 0xFFE6);
+}
+
+bool IsPrefixSymbol(uint16_t word) {
+ return IsCurrencySymbol(word) || word == 0x2116;
+}
+
+bool IsSpace(uint16_t word) {
+ return word == 0x0020 || word == 0x3000;
+}
+
+bool NeedDivision(uint16_t prevWord, uint16_t curWord) {
+ if ((IsLatin(prevWord) || IsDigit(prevWord)) &&
+ (IsLatin(curWord) || IsDigit(curWord))) {
+ return false;
+ }
+ if (IsSpace(curWord) || IsPunctuation(curWord)) {
+ return false;
+ }
+ if (IsConnectiveSymbol(prevWord) || IsConnectiveSymbol(curWord)) {
+ return false;
+ }
+ if (IsSpace(prevWord) || IsPunctuation(prevWord)) {
+ return true;
+ }
+ if (IsPrefixSymbol(prevWord)) {
+ return false;
+ }
+ if (IsPrefixSymbol(curWord) || IsCJK(curWord)) {
+ return true;
+ }
+ if (IsCJK(prevWord)) {
+ return true;
+ }
+ return false;
+}
+
+} // namespace
+
+CTypeset::CTypeset(CSection* pSection)
+ : m_rcRet(0.0f, 0.0f, 0.0f, 0.0f),
+ m_pVT(pSection->m_pVT),
+ m_pSection(pSection) {}
+
+CTypeset::~CTypeset() {}
+
+CPVT_FloatRect CTypeset::CharArray() {
+ ASSERT(m_pSection);
+ FX_FLOAT fLineAscent =
+ m_pVT->GetFontAscent(m_pVT->GetDefaultFontIndex(), m_pVT->GetFontSize());
+ FX_FLOAT fLineDescent =
+ m_pVT->GetFontDescent(m_pVT->GetDefaultFontIndex(), m_pVT->GetFontSize());
+ m_rcRet.Default();
+ FX_FLOAT x = 0.0f, y = 0.0f;
+ FX_FLOAT fNextWidth;
+ int32_t nStart = 0;
+ FX_FLOAT fNodeWidth = m_pVT->GetPlateWidth() /
+ (m_pVT->m_nCharArray <= 0 ? 1 : m_pVT->m_nCharArray);
+ if (CLine* pLine = m_pSection->m_LineArray.GetAt(0)) {
+ x = 0.0f;
+ y += m_pVT->GetLineLeading(m_pSection->m_SecInfo);
+ y += fLineAscent;
+ nStart = 0;
+ switch (m_pVT->GetAlignment(m_pSection->m_SecInfo)) {
+ case 0:
+ pLine->m_LineInfo.fLineX = fNodeWidth * VARIABLETEXT_HALF;
+ break;
+ case 1:
+ nStart = (m_pVT->m_nCharArray - m_pSection->m_WordArray.GetSize()) / 2;
+ pLine->m_LineInfo.fLineX =
+ fNodeWidth * nStart - fNodeWidth * VARIABLETEXT_HALF;
+ break;
+ case 2:
+ nStart = m_pVT->m_nCharArray - m_pSection->m_WordArray.GetSize();
+ pLine->m_LineInfo.fLineX =
+ fNodeWidth * nStart - fNodeWidth * VARIABLETEXT_HALF;
+ break;
+ }
+ for (int32_t w = 0, sz = m_pSection->m_WordArray.GetSize(); w < sz; w++) {
+ if (w >= m_pVT->m_nCharArray) {
+ break;
+ }
+ fNextWidth = 0;
+ if (CPVT_WordInfo* pNextWord =
+ (CPVT_WordInfo*)m_pSection->m_WordArray.GetAt(w + 1)) {
+ pNextWord->fWordTail = 0;
+ fNextWidth = m_pVT->GetWordWidth(*pNextWord);
+ }
+ if (CPVT_WordInfo* pWord =
+ (CPVT_WordInfo*)m_pSection->m_WordArray.GetAt(w)) {
+ pWord->fWordTail = 0;
+ FX_FLOAT fWordWidth = m_pVT->GetWordWidth(*pWord);
+ FX_FLOAT fWordAscent = m_pVT->GetWordAscent(*pWord);
+ FX_FLOAT fWordDescent = m_pVT->GetWordDescent(*pWord);
+ x = (FX_FLOAT)(fNodeWidth * (w + nStart + 0.5) -
+ fWordWidth * VARIABLETEXT_HALF);
+ pWord->fWordX = x;
+ pWord->fWordY = y;
+ if (w == 0) {
+ pLine->m_LineInfo.fLineX = x;
+ }
+ if (w != m_pSection->m_WordArray.GetSize() - 1) {
+ pWord->fWordTail =
+ (fNodeWidth - (fWordWidth + fNextWidth) * VARIABLETEXT_HALF > 0
+ ? fNodeWidth - (fWordWidth + fNextWidth) * VARIABLETEXT_HALF
+ : 0);
+ } else {
+ pWord->fWordTail = 0;
+ }
+ x += fWordWidth;
+ fLineAscent = std::max(fLineAscent, fWordAscent);
+ fLineDescent = std::min(fLineDescent, fWordDescent);
+ }
+ }
+ pLine->m_LineInfo.nBeginWordIndex = 0;
+ pLine->m_LineInfo.nEndWordIndex = m_pSection->m_WordArray.GetSize() - 1;
+ pLine->m_LineInfo.fLineY = y;
+ pLine->m_LineInfo.fLineWidth = x - pLine->m_LineInfo.fLineX;
+ pLine->m_LineInfo.fLineAscent = fLineAscent;
+ pLine->m_LineInfo.fLineDescent = fLineDescent;
+ y -= fLineDescent;
+ }
+ return m_rcRet = CPVT_FloatRect(0, 0, x, y);
+}
+
+CFX_SizeF CTypeset::GetEditSize(FX_FLOAT fFontSize) {
+ ASSERT(m_pSection);
+ ASSERT(m_pVT);
+ SplitLines(FALSE, fFontSize);
+ return CFX_SizeF(m_rcRet.Width(), m_rcRet.Height());
+}
+
+CPVT_FloatRect CTypeset::Typeset() {
+ ASSERT(m_pVT);
+ m_pSection->m_LineArray.Empty();
+ SplitLines(TRUE, 0.0f);
+ m_pSection->m_LineArray.Clear();
+ OutputLines();
+ return m_rcRet;
+}
+
+void CTypeset::SplitLines(FX_BOOL bTypeset, FX_FLOAT fFontSize) {
+ ASSERT(m_pVT);
+ ASSERT(m_pSection);
+ int32_t nLineHead = 0;
+ int32_t nLineTail = 0;
+ FX_FLOAT fMaxX = 0.0f, fMaxY = 0.0f;
+ FX_FLOAT fLineWidth = 0.0f, fBackupLineWidth = 0.0f;
+ FX_FLOAT fLineAscent = 0.0f, fBackupLineAscent = 0.0f;
+ FX_FLOAT fLineDescent = 0.0f, fBackupLineDescent = 0.0f;
+ int32_t nWordStartPos = 0;
+ FX_BOOL bFullWord = FALSE;
+ int32_t nLineFullWordIndex = 0;
+ int32_t nCharIndex = 0;
+ CPVT_LineInfo line;
+ FX_FLOAT fWordWidth = 0;
+ FX_FLOAT fTypesetWidth = std::max(
+ m_pVT->GetPlateWidth() - m_pVT->GetLineIndent(m_pSection->m_SecInfo),
+ 0.0f);
+ int32_t nTotalWords = m_pSection->m_WordArray.GetSize();
+ FX_BOOL bOpened = FALSE;
+ if (nTotalWords > 0) {
+ int32_t i = 0;
+ while (i < nTotalWords) {
+ CPVT_WordInfo* pWord = m_pSection->m_WordArray.GetAt(i);
+ CPVT_WordInfo* pOldWord = pWord;
+ if (i > 0) {
+ pOldWord = m_pSection->m_WordArray.GetAt(i - 1);
+ }
+ if (pWord) {
+ if (bTypeset) {
+ fLineAscent =
+ std::max(fLineAscent, m_pVT->GetWordAscent(*pWord, TRUE));
+ fLineDescent =
+ std::min(fLineDescent, m_pVT->GetWordDescent(*pWord, TRUE));
+ fWordWidth = m_pVT->GetWordWidth(*pWord);
+ } else {
+ fLineAscent =
+ std::max(fLineAscent, m_pVT->GetWordAscent(*pWord, fFontSize));
+ fLineDescent =
+ std::min(fLineDescent, m_pVT->GetWordDescent(*pWord, fFontSize));
+ fWordWidth = m_pVT->GetWordWidth(
+ pWord->nFontIndex, pWord->Word, m_pVT->m_wSubWord,
+ m_pVT->m_fCharSpace, m_pVT->m_nHorzScale, fFontSize,
+ pWord->fWordTail, 0);
+ }
+ if (!bOpened) {
+ if (IsOpenStylePunctuation(pWord->Word)) {
+ bOpened = TRUE;
+ bFullWord = TRUE;
+ } else if (pOldWord) {
+ if (NeedDivision(pOldWord->Word, pWord->Word)) {
+ bFullWord = TRUE;
+ }
+ }
+ } else {
+ if (!IsSpace(pWord->Word) && !IsOpenStylePunctuation(pWord->Word)) {
+ bOpened = FALSE;
+ }
+ }
+ if (bFullWord) {
+ bFullWord = FALSE;
+ if (nCharIndex > 0) {
+ nLineFullWordIndex++;
+ }
+ nWordStartPos = i;
+ fBackupLineWidth = fLineWidth;
+ fBackupLineAscent = fLineAscent;
+ fBackupLineDescent = fLineDescent;
+ }
+ nCharIndex++;
+ }
+ if (m_pVT->m_bLimitWidth && fTypesetWidth > 0 &&
+ fLineWidth + fWordWidth > fTypesetWidth) {
+ if (nLineFullWordIndex > 0) {
+ i = nWordStartPos;
+ fLineWidth = fBackupLineWidth;
+ fLineAscent = fBackupLineAscent;
+ fLineDescent = fBackupLineDescent;
+ }
+ if (nCharIndex == 1) {
+ fLineWidth = fWordWidth;
+ i++;
+ }
+ nLineTail = i - 1;
+ if (bTypeset) {
+ line.nBeginWordIndex = nLineHead;
+ line.nEndWordIndex = nLineTail;
+ line.nTotalWord = nLineTail - nLineHead + 1;
+ line.fLineWidth = fLineWidth;
+ line.fLineAscent = fLineAscent;
+ line.fLineDescent = fLineDescent;
+ m_pSection->AddLine(line);
+ }
+ fMaxY += (fLineAscent + m_pVT->GetLineLeading(m_pSection->m_SecInfo));
+ fMaxY -= fLineDescent;
+ fMaxX = std::max(fLineWidth, fMaxX);
+ nLineHead = i;
+ fLineWidth = 0.0f;
+ fLineAscent = 0.0f;
+ fLineDescent = 0.0f;
+ nCharIndex = 0;
+ nLineFullWordIndex = 0;
+ bFullWord = FALSE;
+ } else {
+ fLineWidth += fWordWidth;
+ i++;
+ }
+ }
+ if (nLineHead <= nTotalWords - 1) {
+ nLineTail = nTotalWords - 1;
+ if (bTypeset) {
+ line.nBeginWordIndex = nLineHead;
+ line.nEndWordIndex = nLineTail;
+ line.nTotalWord = nLineTail - nLineHead + 1;
+ line.fLineWidth = fLineWidth;
+ line.fLineAscent = fLineAscent;
+ line.fLineDescent = fLineDescent;
+ m_pSection->AddLine(line);
+ }
+ fMaxY += (fLineAscent + m_pVT->GetLineLeading(m_pSection->m_SecInfo));
+ fMaxY -= fLineDescent;
+ fMaxX = std::max(fLineWidth, fMaxX);
+ }
+ } else {
+ if (bTypeset) {
+ fLineAscent = m_pVT->GetLineAscent(m_pSection->m_SecInfo);
+ fLineDescent = m_pVT->GetLineDescent(m_pSection->m_SecInfo);
+ } else {
+ fLineAscent =
+ m_pVT->GetFontAscent(m_pVT->GetDefaultFontIndex(), fFontSize);
+ fLineDescent =
+ m_pVT->GetFontDescent(m_pVT->GetDefaultFontIndex(), fFontSize);
+ }
+ if (bTypeset) {
+ line.nBeginWordIndex = -1;
+ line.nEndWordIndex = -1;
+ line.nTotalWord = 0;
+ line.fLineWidth = 0;
+ line.fLineAscent = fLineAscent;
+ line.fLineDescent = fLineDescent;
+ m_pSection->AddLine(line);
+ }
+ fMaxY += m_pVT->GetLineLeading(m_pSection->m_SecInfo) + fLineAscent -
+ fLineDescent;
+ }
+ m_rcRet = CPVT_FloatRect(0, 0, fMaxX, fMaxY);
+}
+
+void CTypeset::OutputLines() {
+ ASSERT(m_pVT);
+ ASSERT(m_pSection);
+ FX_FLOAT fMinX = 0.0f, fMinY = 0.0f, fMaxX = 0.0f, fMaxY = 0.0f;
+ FX_FLOAT fPosX = 0.0f, fPosY = 0.0f;
+ FX_FLOAT fLineIndent = m_pVT->GetLineIndent(m_pSection->m_SecInfo);
+ FX_FLOAT fTypesetWidth = std::max(m_pVT->GetPlateWidth() - fLineIndent, 0.0f);
+ switch (m_pVT->GetAlignment(m_pSection->m_SecInfo)) {
+ default:
+ case 0:
+ fMinX = 0.0f;
+ break;
+ case 1:
+ fMinX = (fTypesetWidth - m_rcRet.Width()) * VARIABLETEXT_HALF;
+ break;
+ case 2:
+ fMinX = fTypesetWidth - m_rcRet.Width();
+ break;
+ }
+ fMaxX = fMinX + m_rcRet.Width();
+ fMinY = 0.0f;
+ fMaxY = m_rcRet.Height();
+ int32_t nTotalLines = m_pSection->m_LineArray.GetSize();
+ if (nTotalLines > 0) {
+ m_pSection->m_SecInfo.nTotalLine = nTotalLines;
+ for (int32_t l = 0; l < nTotalLines; l++) {
+ if (CLine* pLine = m_pSection->m_LineArray.GetAt(l)) {
+ switch (m_pVT->GetAlignment(m_pSection->m_SecInfo)) {
+ default:
+ case 0:
+ fPosX = 0;
+ break;
+ case 1:
+ fPosX = (fTypesetWidth - pLine->m_LineInfo.fLineWidth) *
+ VARIABLETEXT_HALF;
+ break;
+ case 2:
+ fPosX = fTypesetWidth - pLine->m_LineInfo.fLineWidth;
+ break;
+ }
+ fPosX += fLineIndent;
+ fPosY += m_pVT->GetLineLeading(m_pSection->m_SecInfo);
+ fPosY += pLine->m_LineInfo.fLineAscent;
+ pLine->m_LineInfo.fLineX = fPosX - fMinX;
+ pLine->m_LineInfo.fLineY = fPosY - fMinY;
+ for (int32_t w = pLine->m_LineInfo.nBeginWordIndex;
+ w <= pLine->m_LineInfo.nEndWordIndex; w++) {
+ if (CPVT_WordInfo* pWord = m_pSection->m_WordArray.GetAt(w)) {
+ pWord->fWordX = fPosX - fMinX;
+ if (pWord->pWordProps) {
+ switch (pWord->pWordProps->nScriptType) {
+ default:
+ case CPDF_VariableText::ScriptType::Normal:
+ pWord->fWordY = fPosY - fMinY;
+ break;
+ case CPDF_VariableText::ScriptType::Super:
+ pWord->fWordY = fPosY - m_pVT->GetWordAscent(*pWord) - fMinY;
+ break;
+ case CPDF_VariableText::ScriptType::Sub:
+ pWord->fWordY = fPosY - m_pVT->GetWordDescent(*pWord) - fMinY;
+ break;
+ }
+ } else {
+ pWord->fWordY = fPosY - fMinY;
+ }
+ fPosX += m_pVT->GetWordWidth(*pWord);
+ }
+ }
+ fPosY -= pLine->m_LineInfo.fLineDescent;
+ }
+ }
+ }
+ m_rcRet = CPVT_FloatRect(fMinX, fMinY, fMaxX, fMaxY);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-08 01:47:57 +0000