| OLD | NEW |
| 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 "../../include/fxcrt/fx_ucd.h" | 7 #include "../../include/fxcrt/fx_ucd.h" |
| 8 #include "fx_arabic.h" | 8 #include "fx_arabic.h" |
| 9 | 9 |
| 10 extern const FX_DWORD gs_FX_TextLayout_CodeProperties[65536]; | 10 extern const FX_DWORD gs_FX_TextLayout_CodeProperties[65536]; |
| 11 IFX_BidiChar* IFX_BidiChar::Create() | 11 IFX_BidiChar* IFX_BidiChar::Create() { |
| 12 { | 12 return new CFX_BidiChar; |
| 13 return new CFX_BidiChar; | |
| 14 } | 13 } |
| 15 CFX_BidiChar::CFX_BidiChar() | 14 CFX_BidiChar::CFX_BidiChar() |
| 16 : m_bSeparateNeutral(TRUE) | 15 : m_bSeparateNeutral(TRUE), |
| 17 , m_iCurStart(0) | 16 m_iCurStart(0), |
| 18 , m_iCurCount(0) | 17 m_iCurCount(0), |
| 19 , m_iCurBidi(0) | 18 m_iCurBidi(0), |
| 20 , m_iLastBidi(0) | 19 m_iLastBidi(0), |
| 21 , m_iLastStart(0) | 20 m_iLastStart(0), |
| 22 , m_iLastCount(0) | 21 m_iLastCount(0) {} |
| 23 { | 22 void CFX_BidiChar::SetPolicy(FX_BOOL bSeparateNeutral) { |
| 24 } | 23 m_bSeparateNeutral = bSeparateNeutral; |
| 25 void CFX_BidiChar::SetPolicy(FX_BOOL bSeparateNeutral) | |
| 26 { | |
| 27 m_bSeparateNeutral = bSeparateNeutral; | |
| 28 } | 24 } |
| 29 | 25 |
| 30 FX_BOOL CFX_BidiChar::AppendChar(FX_WCHAR wch) | 26 FX_BOOL CFX_BidiChar::AppendChar(FX_WCHAR wch) { |
| 31 { | 27 FX_DWORD dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch]; |
| 32 FX_DWORD dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch]; | 28 int32_t iBidiCls = (dwProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS; |
| 33 int32_t iBidiCls = (dwProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS; | 29 int32_t iContext = 0; |
| 34 int32_t iContext = 0; | 30 switch (iBidiCls) { |
| 35 switch (iBidiCls) { | 31 case FX_BIDICLASS_L: |
| 36 case FX_BIDICLASS_L: | 32 case FX_BIDICLASS_AN: |
| 37 case FX_BIDICLASS_AN: | 33 case FX_BIDICLASS_EN: |
| 38 case FX_BIDICLASS_EN: | 34 iContext = 1; |
| 39 iContext = 1; | 35 break; |
| 40 break; | 36 case FX_BIDICLASS_R: |
| 41 case FX_BIDICLASS_R: | 37 case FX_BIDICLASS_AL: |
| 42 case FX_BIDICLASS_AL: | 38 iContext = 2; |
| 43 iContext = 2; | 39 break; |
| 44 break; | 40 } |
| 41 FX_BOOL bRet = FALSE; |
| 42 if (iContext != m_iCurBidi) { |
| 43 if (m_bSeparateNeutral) { |
| 44 bRet = TRUE; |
| 45 } else { |
| 46 if (m_iCurBidi == 0) { |
| 47 bRet = (m_iCurCount > 0); |
| 48 } else { |
| 49 bRet = (iContext != 0); |
| 50 } |
| 45 } | 51 } |
| 46 FX_BOOL bRet = FALSE; | 52 if (bRet) { |
| 47 if (iContext != m_iCurBidi) { | 53 m_iLastBidi = m_iCurBidi; |
| 48 if (m_bSeparateNeutral) { | 54 m_iLastStart = m_iCurStart; |
| 49 bRet = TRUE; | 55 m_iCurStart = m_iCurCount; |
| 50 } else { | 56 m_iLastCount = m_iCurCount - m_iLastStart; |
| 51 if (m_iCurBidi == 0) { | |
| 52 bRet = (m_iCurCount > 0); | |
| 53 } else { | |
| 54 bRet = (iContext != 0); | |
| 55 } | |
| 56 } | |
| 57 if (bRet) { | |
| 58 m_iLastBidi = m_iCurBidi; | |
| 59 m_iLastStart = m_iCurStart; | |
| 60 m_iCurStart = m_iCurCount; | |
| 61 m_iLastCount = m_iCurCount - m_iLastStart; | |
| 62 } | |
| 63 if (m_bSeparateNeutral || iContext != 0) { | |
| 64 m_iCurBidi = iContext; | |
| 65 } | |
| 66 } | 57 } |
| 67 m_iCurCount ++; | 58 if (m_bSeparateNeutral || iContext != 0) { |
| 68 return bRet; | 59 m_iCurBidi = iContext; |
| 60 } |
| 61 } |
| 62 m_iCurCount++; |
| 63 return bRet; |
| 69 } | 64 } |
| 70 FX_BOOL CFX_BidiChar::EndChar() | 65 FX_BOOL CFX_BidiChar::EndChar() { |
| 71 { | 66 m_iLastBidi = m_iCurBidi; |
| 72 m_iLastBidi = m_iCurBidi; | 67 m_iLastStart = m_iCurStart; |
| 73 m_iLastStart = m_iCurStart; | 68 m_iCurStart = m_iCurCount; |
| 74 m_iCurStart = m_iCurCount; | 69 m_iLastCount = m_iCurCount - m_iLastStart; |
| 75 m_iLastCount = m_iCurCount - m_iLastStart; | 70 return m_iLastCount > 0; |
| 76 return m_iLastCount > 0; | |
| 77 } | 71 } |
| 78 int32_t CFX_BidiChar::GetBidiInfo(int32_t &iStart, int32_t &iCount) | 72 int32_t CFX_BidiChar::GetBidiInfo(int32_t& iStart, int32_t& iCount) { |
| 79 { | 73 iStart = m_iLastStart; |
| 80 iStart = m_iLastStart; | 74 iCount = m_iLastCount; |
| 81 iCount = m_iLastCount; | 75 return m_iLastBidi; |
| 82 return m_iLastBidi; | |
| 83 } | 76 } |
| 84 void CFX_BidiChar::Reset() | 77 void CFX_BidiChar::Reset() { |
| 85 { | 78 m_iCurStart = 0; |
| 86 m_iCurStart = 0; | 79 m_iCurCount = 0; |
| 87 m_iCurCount = 0; | 80 m_iCurBidi = 0; |
| 88 m_iCurBidi = 0; | 81 m_iLastBidi = 0; |
| 89 m_iLastBidi = 0; | 82 m_iLastStart = 0; |
| 90 m_iLastStart = 0; | 83 m_iLastCount = 0; |
| 91 m_iLastCount = 0; | |
| 92 } | 84 } |
| OLD | NEW |