1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_SRC_FXCRT_FX_ARABIC_H_ 8 #define CORE_SRC_FXCRT_FX_ARABIC_H_ 9 10 #include "core/include/fxcrt/fx_arb.h" 11 12 class CFX_ArabicChar : public IFX_ArabicChar { 13 public: 14 virtual void Release() { delete this; } 15 virtual FX_BOOL IsArabicChar(FX_WCHAR wch) const; 16 virtual FX_BOOL IsArabicFormChar(FX_WCHAR wch) const; 17 18 virtual FX_WCHAR GetFormChar(FX_WCHAR wch, 19 FX_WCHAR prev = 0, 20 FX_WCHAR next = 0) const; 21 virtual FX_WCHAR GetFormChar(const CFX_Char* cur, 22 const CFX_Char* prev, 23 const CFX_Char* next) const; 24 25 protected: 26 const FX_ARBFORMTABLE* ParseChar(const CFX_Char* pTC, 27 FX_WCHAR& wChar, 28 FX_CHARTYPE& eType) const; 29 }; 30 void FX_BidiReverseString(CFX_WideString& wsText, 31 int32_t iStart, 32 int32_t iCount); 33 void FX_BidiSetDeferredRun(CFX_Int32Array& values, 34 int32_t iStart, 35 int32_t iCount, 36 int32_t iValue); 37 #define FX_BCON FX_BIDICLASS_ON 38 #define FX_BCL FX_BIDICLASS_L 39 #define FX_BCR FX_BIDICLASS_R 40 #define FX_BCAN FX_BIDICLASS_AN 41 #define FX_BCEN FX_BIDICLASS_EN 42 #define FX_BCAL FX_BIDICLASS_AL 43 #define FX_BCNSM FX_BIDICLASS_NSM 44 #define FX_BCCS FX_BIDICLASS_CS 45 #define FX_BCES FX_BIDICLASS_ES 46 #define FX_BCET FX_BIDICLASS_ET 47 #define FX_BCBN FX_BIDICLASS_BN 48 #define FX_BCS FX_BIDICLASS_S 49 #define FX_BCWS FX_BIDICLASS_WS 50 #define FX_BCB FX_BIDICLASS_B 51 #define FX_BCRLO FX_BIDICLASS_RLO 52 #define FX_BCRLE FX_BIDICLASS_RLE 53 #define FX_BCLRO FX_BIDICLASS_LRO 54 #define FX_BCLRE FX_BIDICLASS_LRE 55 #define FX_BCPDF FX_BIDICLASS_PDF 56 #define FX_BCN FX_BIDICLASS_N 57 void FX_BidiClassify(const CFX_WideString& wsText, 58 CFX_Int32Array& classes, 59 FX_BOOL bWS = FALSE); 60 #define FX_BIDIMAXLEVEL 61 61 #define FX_BidiGreaterEven(a) (FX_IsOdd(a) ? ((a) + 1) : ((a) + 2)) 62 #define FX_BidiGreaterOdd(a) (FX_IsOdd(a) ? ((a) + 2) : ((a) + 1)) 63 int32_t FX_BidiResolveExplicit(int32_t iBaseLevel, 64 int32_t iDirection, 65 CFX_Int32Array& classes, 66 CFX_Int32Array& levels, 67 int32_t iStart, 68 int32_t iCount, 69 int32_t iNest = 0); 70 #define FX_BidiDirection(a) (FX_IsOdd(a) ? FX_BIDICLASS_R : FX_BIDICLASS_L) 71 enum FX_BIDIWEAKSTATE { 72 FX_BIDIWEAKSTATE_xa = 0, 73 FX_BIDIWEAKSTATE_xr, 74 FX_BIDIWEAKSTATE_xl, 75 FX_BIDIWEAKSTATE_ao, 76 FX_BIDIWEAKSTATE_ro, 77 FX_BIDIWEAKSTATE_lo, 78 FX_BIDIWEAKSTATE_rt, 79 FX_BIDIWEAKSTATE_lt, 80 FX_BIDIWEAKSTATE_cn, 81 FX_BIDIWEAKSTATE_ra, 82 FX_BIDIWEAKSTATE_re, 83 FX_BIDIWEAKSTATE_la, 84 FX_BIDIWEAKSTATE_le, 85 FX_BIDIWEAKSTATE_ac, 86 FX_BIDIWEAKSTATE_rc, 87 FX_BIDIWEAKSTATE_rs, 88 FX_BIDIWEAKSTATE_lc, 89 FX_BIDIWEAKSTATE_ls, 90 FX_BIDIWEAKSTATE_ret, 91 FX_BIDIWEAKSTATE_let, 92 }; 93 #define FX_BWSxa FX_BIDIWEAKSTATE_xa 94 #define FX_BWSxr FX_BIDIWEAKSTATE_xr 95 #define FX_BWSxl FX_BIDIWEAKSTATE_xl 96 #define FX_BWSao FX_BIDIWEAKSTATE_ao 97 #define FX_BWSro FX_BIDIWEAKSTATE_ro 98 #define FX_BWSlo FX_BIDIWEAKSTATE_lo 99 #define FX_BWSrt FX_BIDIWEAKSTATE_rt 100 #define FX_BWSlt FX_BIDIWEAKSTATE_lt 101 #define FX_BWScn FX_BIDIWEAKSTATE_cn 102 #define FX_BWSra FX_BIDIWEAKSTATE_ra 103 #define FX_BWSre FX_BIDIWEAKSTATE_re 104 #define FX_BWSla FX_BIDIWEAKSTATE_la 105 #define FX_BWSle FX_BIDIWEAKSTATE_le 106 #define FX_BWSac FX_BIDIWEAKSTATE_ac 107 #define FX_BWSrc FX_BIDIWEAKSTATE_rc 108 #define FX_BWSrs FX_BIDIWEAKSTATE_rs 109 #define FX_BWSlc FX_BIDIWEAKSTATE_lc 110 #define FX_BWSls FX_BIDIWEAKSTATE_ls 111 #define FX_BWSret FX_BIDIWEAKSTATE_ret 112 #define FX_BWSlet FX_BIDIWEAKSTATE_let 113 enum FX_BIDIWEAKACTION { 114 FX_BIDIWEAKACTION_IX = 0x100, 115 FX_BIDIWEAKACTION_XX = 0x0F, 116 FX_BIDIWEAKACTION_xxx = (0x0F << 4) + 0x0F, 117 FX_BIDIWEAKACTION_xIx = 0x100 + FX_BIDIWEAKACTION_xxx, 118 FX_BIDIWEAKACTION_xxN = (0x0F << 4) + FX_BIDICLASS_ON, 119 FX_BIDIWEAKACTION_xxE = (0x0F << 4) + FX_BIDICLASS_EN, 120 FX_BIDIWEAKACTION_xxA = (0x0F << 4) + FX_BIDICLASS_AN, 121 FX_BIDIWEAKACTION_xxR = (0x0F << 4) + FX_BIDICLASS_R, 122 FX_BIDIWEAKACTION_xxL = (0x0F << 4) + FX_BIDICLASS_L, 123 FX_BIDIWEAKACTION_Nxx = (FX_BIDICLASS_ON << 4) + 0x0F, 124 FX_BIDIWEAKACTION_Axx = (FX_BIDICLASS_AN << 4) + 0x0F, 125 FX_BIDIWEAKACTION_ExE = (FX_BIDICLASS_EN << 4) + FX_BIDICLASS_EN, 126 FX_BIDIWEAKACTION_NIx = (FX_BIDICLASS_ON << 4) + 0x0F + 0x100, 127 FX_BIDIWEAKACTION_NxN = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_ON, 128 FX_BIDIWEAKACTION_NxR = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_R, 129 FX_BIDIWEAKACTION_NxE = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_EN, 130 FX_BIDIWEAKACTION_AxA = (FX_BIDICLASS_AN << 4) + FX_BIDICLASS_AN, 131 FX_BIDIWEAKACTION_NxL = (FX_BIDICLASS_ON << 4) + FX_BIDICLASS_L, 132 FX_BIDIWEAKACTION_LxL = (FX_BIDICLASS_L << 4) + FX_BIDICLASS_L, 133 FX_BIDIWEAKACTION_xIL = (0x0F << 4) + FX_BIDICLASS_L + 0x100, 134 FX_BIDIWEAKACTION_AxR = (FX_BIDICLASS_AN << 4) + FX_BIDICLASS_R, 135 FX_BIDIWEAKACTION_Lxx = (FX_BIDICLASS_L << 4) + 0x0F, 136 }; 137 #define FX_BWAIX FX_BIDIWEAKACTION_IX 138 #define FX_BWAXX FX_BIDIWEAKACTION_XX 139 #define FX_BWAxxx FX_BIDIWEAKACTION_xxx 140 #define FX_BWAxIx FX_BIDIWEAKACTION_xIx 141 #define FX_BWAxxN FX_BIDIWEAKACTION_xxN 142 #define FX_BWAxxE FX_BIDIWEAKACTION_xxE 143 #define FX_BWAxxA FX_BIDIWEAKACTION_xxA 144 #define FX_BWAxxR FX_BIDIWEAKACTION_xxR 145 #define FX_BWAxxL FX_BIDIWEAKACTION_xxL 146 #define FX_BWANxx FX_BIDIWEAKACTION_Nxx 147 #define FX_BWAAxx FX_BIDIWEAKACTION_Axx 148 #define FX_BWAExE FX_BIDIWEAKACTION_ExE 149 #define FX_BWANIx FX_BIDIWEAKACTION_NIx 150 #define FX_BWANxN FX_BIDIWEAKACTION_NxN 151 #define FX_BWANxR FX_BIDIWEAKACTION_NxR 152 #define FX_BWANxE FX_BIDIWEAKACTION_NxE 153 #define FX_BWAAxA FX_BIDIWEAKACTION_AxA 154 #define FX_BWANxL FX_BIDIWEAKACTION_NxL 155 #define FX_BWALxL FX_BIDIWEAKACTION_LxL 156 #define FX_BWAxIL FX_BIDIWEAKACTION_xIL 157 #define FX_BWAAxR FX_BIDIWEAKACTION_AxR 158 #define FX_BWALxx FX_BIDIWEAKACTION_Lxx 159 #define FX_BidiGetDeferredType(a) (((a) >> 4) & 0x0F) 160 #define FX_BidiGetResolvedType(a) ((a)&0x0F) 161 void FX_BidiResolveWeak(int32_t iBaseLevel, 162 CFX_Int32Array& classes, 163 CFX_Int32Array& levels); 164 enum FX_BIDINEUTRALSTATE { 165 FX_BIDINEUTRALSTATE_r = 0, 166 FX_BIDINEUTRALSTATE_l, 167 FX_BIDINEUTRALSTATE_rn, 168 FX_BIDINEUTRALSTATE_ln, 169 FX_BIDINEUTRALSTATE_a, 170 FX_BIDINEUTRALSTATE_na, 171 }; 172 #define FX_BNSr FX_BIDINEUTRALSTATE_r 173 #define FX_BNSl FX_BIDINEUTRALSTATE_l 174 #define FX_BNSrn FX_BIDINEUTRALSTATE_rn 175 #define FX_BNSln FX_BIDINEUTRALSTATE_ln 176 #define FX_BNSa FX_BIDINEUTRALSTATE_a 177 #define FX_BNSna FX_BIDINEUTRALSTATE_na 178 enum FX_BIDINEUTRALACTION { 179 FX_BIDINEUTRALACTION_nL = FX_BIDICLASS_L, 180 FX_BIDINEUTRALACTION_En = (FX_BIDICLASS_AN << 4), 181 FX_BIDINEUTRALACTION_Rn = (FX_BIDICLASS_R << 4), 182 FX_BIDINEUTRALACTION_Ln = (FX_BIDICLASS_L << 4), 183 FX_BIDINEUTRALACTION_In = FX_BIDIWEAKACTION_IX, 184 FX_BIDINEUTRALACTION_LnL = (FX_BIDICLASS_L << 4) + FX_BIDICLASS_L, 185 }; 186 #define FX_BNAnL FX_BIDINEUTRALACTION_nL 187 #define FX_BNAEn FX_BIDINEUTRALACTION_En 188 #define FX_BNARn FX_BIDINEUTRALACTION_Rn 189 #define FX_BNALn FX_BIDINEUTRALACTION_Ln 190 #define FX_BNAIn FX_BIDINEUTRALACTION_In 191 #define FX_BNALnL FX_BIDINEUTRALACTION_LnL 192 int32_t FX_BidiGetDeferredNeutrals(int32_t iAction, int32_t iLevel); 193 int32_t FX_BidiGetResolvedNeutrals(int32_t iAction); 194 void FX_BidiResolveNeutrals(int32_t iBaseLevel, 195 CFX_Int32Array& classes, 196 const CFX_Int32Array& levels); 197 void FX_BidiResolveImplicit(const CFX_Int32Array& classes, 198 CFX_Int32Array& levels); 199 void FX_BidiResolveWhitespace(int32_t iBaseLevel, 200 const CFX_Int32Array& classes, 201 CFX_Int32Array& levels); 202 int32_t FX_BidiReorderLevel(int32_t iBaseLevel, 203 CFX_WideString& wsText, 204 const CFX_Int32Array& levels, 205 int32_t iStart, 206 FX_BOOL bReverse = FALSE); 207 void FX_BidiReorder(int32_t iBaseLevel, 208 CFX_WideString& wsText, 209 const CFX_Int32Array& levels); 210 211 #endif // CORE_SRC_FXCRT_FX_ARABIC_H_ 212
