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| 1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 | 6 |
| 7 #include <cctype> | 7 #include <cctype> |
| 8 #include <cwctype> | 8 #include <cwctype> |
| 9 #include <algorithm> | 9 #include <algorithm> |
| 10 | 10 |
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| 1414 if (m_TempCharList.GetSize() >= 1) { | 1414 if (m_TempCharList.GetSize() >= 1) { |
| 1415 preChar = | 1415 preChar = |
| 1416 *(PAGECHAR_INFO*)m_TempCharList.GetAt(m_TempCharList.GetSize() - 1); | 1416 *(PAGECHAR_INFO*)m_TempCharList.GetAt(m_TempCharList.GetSize() - 1); |
| 1417 } else { | 1417 } else { |
| 1418 preChar = *(PAGECHAR_INFO*)m_charList.GetAt(m_charList.GetSize() - 1); | 1418 preChar = *(PAGECHAR_INFO*)m_charList.GetAt(m_charList.GetSize() - 1); |
| 1419 } | 1419 } |
| 1420 if (preChar.m_pTextObj) { | 1420 if (preChar.m_pTextObj) { |
| 1421 m_pPreTextObj = preChar.m_pTextObj; | 1421 m_pPreTextObj = preChar.m_pTextObj; |
| 1422 } | 1422 } |
| 1423 } | 1423 } |
| 1424 void CPDF_TextPage::SwapTempTextBuf(int32_t iCharListStartAppend, |
| 1425 int32_t iBufStartAppend) { |
| 1426 int32_t i, j; |
| 1427 i = iCharListStartAppend; |
| 1428 j = m_TempCharList.GetSize() - 1; |
| 1429 for (; i < j; i++, j--) { |
| 1430 std::swap(m_TempCharList[i], m_TempCharList[j]); |
| 1431 std::swap(m_TempCharList[i].m_Index, m_TempCharList[j].m_Index); |
| 1432 } |
| 1433 FX_WCHAR* pTempBuffer = m_TempTextBuf.GetBuffer(); |
| 1434 i = iBufStartAppend; |
| 1435 j = m_TempTextBuf.GetLength() - 1; |
| 1436 for (; i < j; i++, j--) { |
| 1437 std::swap(pTempBuffer[i], pTempBuffer[j]); |
| 1438 } |
| 1439 } |
| 1440 FX_BOOL CPDF_TextPage::IsRightToLeft(const CPDF_TextObject* pTextObj, |
| 1441 const CPDF_Font* pFont, |
| 1442 int nItems) const { |
| 1443 nonstd::unique_ptr<CFX_BidiChar> pBidiChar(new CFX_BidiChar); |
| 1444 int32_t nR2L = 0; |
| 1445 int32_t nL2R = 0; |
| 1446 int32_t start = 0, count = 0; |
| 1447 CPDF_TextObjectItem item; |
| 1448 for (int32_t i = 0; i < nItems; i++) { |
| 1449 pTextObj->GetItemInfo(i, &item); |
| 1450 if (item.m_CharCode == (FX_DWORD)-1) { |
| 1451 continue; |
| 1452 } |
| 1453 CFX_WideString wstrItem = pFont->UnicodeFromCharCode(item.m_CharCode); |
| 1454 FX_WCHAR wChar = wstrItem.GetAt(0); |
| 1455 if ((wstrItem.IsEmpty() || wChar == 0) && item.m_CharCode) { |
| 1456 wChar = (FX_WCHAR)item.m_CharCode; |
| 1457 } |
| 1458 if (!wChar) { |
| 1459 continue; |
| 1460 } |
| 1461 if (pBidiChar->AppendChar(wChar)) { |
| 1462 CFX_BidiChar::Direction ret = pBidiChar->GetBidiInfo(&start, &count); |
| 1463 if (ret == CFX_BidiChar::RIGHT) { |
| 1464 nR2L++; |
| 1465 } else if (ret == CFX_BidiChar::LEFT) { |
| 1466 nL2R++; |
| 1467 } |
| 1468 } |
| 1469 } |
| 1470 if (pBidiChar->EndChar()) { |
| 1471 CFX_BidiChar::Direction ret = pBidiChar->GetBidiInfo(&start, &count); |
| 1472 if (ret == CFX_BidiChar::RIGHT) { |
| 1473 nR2L++; |
| 1474 } else if (ret == CFX_BidiChar::LEFT) { |
| 1475 nL2R++; |
| 1476 } |
| 1477 } |
| 1478 return (nR2L > 0 && nR2L >= nL2R); |
| 1479 } |
| 1424 void CPDF_TextPage::ProcessTextObject(PDFTEXT_Obj Obj) { | 1480 void CPDF_TextPage::ProcessTextObject(PDFTEXT_Obj Obj) { |
| 1425 CPDF_TextObject* pTextObj = Obj.m_pTextObj; | 1481 CPDF_TextObject* pTextObj = Obj.m_pTextObj; |
| 1426 if (FXSYS_fabs(pTextObj->m_Right - pTextObj->m_Left) < 0.01f) { | 1482 if (FXSYS_fabs(pTextObj->m_Right - pTextObj->m_Left) < 0.01f) { |
| 1427 return; | 1483 return; |
| 1428 } | 1484 } |
| 1429 CFX_AffineMatrix formMatrix = Obj.m_formMatrix; | 1485 CFX_AffineMatrix formMatrix = Obj.m_formMatrix; |
| 1430 CPDF_Font* pFont = pTextObj->GetFont(); | 1486 CPDF_Font* pFont = pTextObj->GetFont(); |
| 1431 CFX_AffineMatrix matrix; | 1487 CFX_AffineMatrix matrix; |
| 1432 pTextObj->GetTextMatrix(&matrix); | 1488 pTextObj->GetTextMatrix(&matrix); |
| 1433 matrix.Concat(formMatrix); | 1489 matrix.Concat(formMatrix); |
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| 1682 m_TempTextBuf.Delete(m_TempTextBuf.GetLength() - 1, 1); | 1738 m_TempTextBuf.Delete(m_TempTextBuf.GetLength() - 1, 1); |
| 1683 m_TempCharList.Delete(m_TempCharList.GetSize() - 1); | 1739 m_TempCharList.Delete(m_TempCharList.GetSize() - 1); |
| 1684 } | 1740 } |
| 1685 } | 1741 } |
| 1686 } | 1742 } |
| 1687 } | 1743 } |
| 1688 if (bIsBidiAndMirrorInverse) { | 1744 if (bIsBidiAndMirrorInverse) { |
| 1689 SwapTempTextBuf(iCharListStartAppend, iBufStartAppend); | 1745 SwapTempTextBuf(iCharListStartAppend, iBufStartAppend); |
| 1690 } | 1746 } |
| 1691 } | 1747 } |
| 1692 void CPDF_TextPage::SwapTempTextBuf(int32_t iCharListStartAppend, | |
| 1693 int32_t iBufStartAppend) { | |
| 1694 int32_t i, j; | |
| 1695 i = iCharListStartAppend; | |
| 1696 j = m_TempCharList.GetSize() - 1; | |
| 1697 for (; i < j; i++, j--) { | |
| 1698 std::swap(m_TempCharList[i], m_TempCharList[j]); | |
| 1699 std::swap(m_TempCharList[i].m_Index, m_TempCharList[j].m_Index); | |
| 1700 } | |
| 1701 FX_WCHAR* pTempBuffer = m_TempTextBuf.GetBuffer(); | |
| 1702 i = iBufStartAppend; | |
| 1703 j = m_TempTextBuf.GetLength() - 1; | |
| 1704 for (; i < j; i++, j--) { | |
| 1705 std::swap(pTempBuffer[i], pTempBuffer[j]); | |
| 1706 } | |
| 1707 } | |
| 1708 FX_BOOL CPDF_TextPage::IsRightToLeft(const CPDF_TextObject* pTextObj, | |
| 1709 const CPDF_Font* pFont, | |
| 1710 int nItems) const { | |
| 1711 nonstd::unique_ptr<CFX_BidiChar> pBidiChar(new CFX_BidiChar); | |
| 1712 int32_t nR2L = 0; | |
| 1713 int32_t nL2R = 0; | |
| 1714 int32_t start = 0, count = 0; | |
| 1715 CPDF_TextObjectItem item; | |
| 1716 for (int32_t i = 0; i < nItems; i++) { | |
| 1717 pTextObj->GetItemInfo(i, &item); | |
| 1718 if (item.m_CharCode == (FX_DWORD)-1) { | |
| 1719 continue; | |
| 1720 } | |
| 1721 CFX_WideString wstrItem = pFont->UnicodeFromCharCode(item.m_CharCode); | |
| 1722 FX_WCHAR wChar = wstrItem.GetAt(0); | |
| 1723 if ((wstrItem.IsEmpty() || wChar == 0) && item.m_CharCode) { | |
| 1724 wChar = (FX_WCHAR)item.m_CharCode; | |
| 1725 } | |
| 1726 if (!wChar) { | |
| 1727 continue; | |
| 1728 } | |
| 1729 if (pBidiChar->AppendChar(wChar)) { | |
| 1730 CFX_BidiChar::Direction ret = pBidiChar->GetBidiInfo(&start, &count); | |
| 1731 if (ret == CFX_BidiChar::RIGHT) { | |
| 1732 nR2L++; | |
| 1733 } else if (ret == CFX_BidiChar::LEFT) { | |
| 1734 nL2R++; | |
| 1735 } | |
| 1736 } | |
| 1737 } | |
| 1738 if (pBidiChar->EndChar()) { | |
| 1739 CFX_BidiChar::Direction ret = pBidiChar->GetBidiInfo(&start, &count); | |
| 1740 if (ret == CFX_BidiChar::RIGHT) { | |
| 1741 nR2L++; | |
| 1742 } else if (ret == CFX_BidiChar::LEFT) { | |
| 1743 nL2R++; | |
| 1744 } | |
| 1745 } | |
| 1746 return (nR2L > 0 && nR2L >= nL2R); | |
| 1747 } | |
| 1748 int32_t CPDF_TextPage::GetTextObjectWritingMode( | 1748 int32_t CPDF_TextPage::GetTextObjectWritingMode( |
| 1749 const CPDF_TextObject* pTextObj) { | 1749 const CPDF_TextObject* pTextObj) { |
| 1750 int32_t nChars = pTextObj->CountChars(); | 1750 int32_t nChars = pTextObj->CountChars(); |
| 1751 if (nChars == 1) { | 1751 if (nChars == 1) { |
| 1752 return m_TextlineDir; | 1752 return m_TextlineDir; |
| 1753 } | 1753 } |
| 1754 CPDF_TextObjectItem first, last; | 1754 CPDF_TextObjectItem first, last; |
| 1755 pTextObj->GetCharInfo(0, &first); | 1755 pTextObj->GetCharInfo(0, &first); |
| 1756 pTextObj->GetCharInfo(nChars - 1, &last); | 1756 pTextObj->GetCharInfo(nChars - 1, &last); |
| 1757 CFX_Matrix textMatrix; | 1757 CFX_Matrix textMatrix; |
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| 2726 if (!m_bIsParsed || index < 0 || index >= m_LinkList.GetSize()) { | 2726 if (!m_bIsParsed || index < 0 || index >= m_LinkList.GetSize()) { |
| 2727 return; | 2727 return; |
| 2728 } | 2728 } |
| 2729 CPDF_LinkExt* link = NULL; | 2729 CPDF_LinkExt* link = NULL; |
| 2730 link = m_LinkList.GetAt(index); | 2730 link = m_LinkList.GetAt(index); |
| 2731 if (!link) { | 2731 if (!link) { |
| 2732 return; | 2732 return; |
| 2733 } | 2733 } |
| 2734 m_pTextPage->GetRectArray(link->m_Start, link->m_Count, rects); | 2734 m_pTextPage->GetRectArray(link->m_Start, link->m_Count, rects); |
| 2735 } | 2735 } |
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