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 XFA_FGAS_LAYOUT_FGAS_RTFBREAK_H_ 8 #define XFA_FGAS_LAYOUT_FGAS_RTFBREAK_H_ 9 10 #include "core/fxcrt/include/fx_basic.h" 11 #include "core/fxcrt/include/fx_ucd.h" 12 #include "xfa/fgas/crt/fgas_memory.h" 13 #include "xfa/fgas/crt/fgas_utils.h" 14 #include "xfa/fgas/layout/fgas_textbreak.h" 15 #include "xfa/fgas/layout/fgas_unicode.h" 16 17 class CFGAS_GEFont; 18 19 #define FX_RTFBREAKPOLICY_None 0x00 20 #define FX_RTFBREAKPOLICY_SpaceBreak 0x01 21 #define FX_RTFBREAKPOLICY_NumberBreak 0x02 22 #define FX_RTFBREAKPOLICY_InfixBreak 0x04 23 #define FX_RTFBREAKPOLICY_TabBreak 0x08 24 #define FX_RTFBREAKPOLICY_OrphanPositionedTab 0x10 25 #define FX_RTFBREAK_None 0x00 26 #define FX_RTFBREAK_PieceBreak 0x01 27 #define FX_RTFBREAK_LineBreak 0x02 28 #define FX_RTFBREAK_ParagraphBreak 0x03 29 #define FX_RTFBREAK_PageBreak 0x04 30 #define FX_RTFLAYOUTSTYLE_Pagination 0x01 31 #define FX_RTFLAYOUTSTYLE_VerticalLayout 0x02 32 #define FX_RTFLAYOUTSTYLE_VerticalChars 0x04 33 #define FX_RTFLAYOUTSTYLE_LineDirection 0x08 34 #define FX_RTFLAYOUTSTYLE_ExpandTab 0x10 35 #define FX_RTFLAYOUTSTYLE_ArabicNumber 0x20 36 #define FX_RTFLAYOUTSTYLE_SingleLine 0x40 37 #define FX_RTFLAYOUTSTYLE_MBCSCode 0x80 38 #define FX_RTFCHARSTYLE_Alignment 0x000F 39 #define FX_RTFCHARSTYLE_ArabicNumber 0x0010 40 #define FX_RTFCHARSTYLE_ArabicShadda 0x0020 41 #define FX_RTFCHARSTYLE_OddBidiLevel 0x0040 42 #define FX_RTFCHARSTYLE_RTLReadingOrder 0x0080 43 #define FX_RTFCHARSTYLE_ArabicContext 0x0300 44 #define FX_RTFCHARSTYLE_ArabicIndic 0x0400 45 #define FX_RTFCHARSTYLE_ArabicComma 0x0800 46 #define FX_RTFLINEALIGNMENT_Left 0 47 #define FX_RTFLINEALIGNMENT_Center 1 48 #define FX_RTFLINEALIGNMENT_Right 2 49 #define FX_RTFLINEALIGNMENT_Justified (1 << 2) 50 #define FX_RTFLINEALIGNMENT_Distributed (2 << 2) 51 #define FX_RTFLINEALIGNMENT_JustifiedLeft \ 52 (FX_RTFLINEALIGNMENT_Left | FX_RTFLINEALIGNMENT_Justified) 53 #define FX_RTFLINEALIGNMENT_JustifiedCenter \ 54 (FX_RTFLINEALIGNMENT_Center | FX_RTFLINEALIGNMENT_Justified) 55 #define FX_RTFLINEALIGNMENT_JustifiedRight \ 56 (FX_RTFLINEALIGNMENT_Right | FX_RTFLINEALIGNMENT_Justified) 57 #define FX_RTFLINEALIGNMENT_DistributedLeft \ 58 (FX_RTFLINEALIGNMENT_Left | FX_RTFLINEALIGNMENT_Distributed) 59 #define FX_RTFLINEALIGNMENT_DistributedCenter \ 60 (FX_RTFLINEALIGNMENT_Center | FX_RTFLINEALIGNMENT_Distributed) 61 #define FX_RTFLINEALIGNMENT_DistributedRight \ 62 (FX_RTFLINEALIGNMENT_Right | FX_RTFLINEALIGNMENT_Distributed) 63 #define FX_RTFLINEALIGNMENT_LowerMask 0x03 64 #define FX_RTFLINEALIGNMENT_HigherMask 0x0C 65 66 struct FX_RTFTEXTOBJ { 67 FX_RTFTEXTOBJ(); 68 69 const FX_WCHAR* pStr; 70 int32_t* pWidths; 71 int32_t iLength; 72 CFGAS_GEFont* pFont; 73 FX_FLOAT fFontSize; 74 uint32_t dwLayoutStyles; 75 int32_t iCharRotation; 76 int32_t iBidiLevel; 77 const CFX_RectF* pRect; 78 FX_WCHAR wLineBreakChar; 79 int32_t iHorizontalScale; 80 int32_t iVerticalScale; 81 }; 82 83 class CFX_RTFPiece : public CFX_Target { 84 public: 85 CFX_RTFPiece(); 86 ~CFX_RTFPiece() override; 87 AppendChar(const CFX_RTFChar & tc)88 void AppendChar(const CFX_RTFChar& tc) { 89 ASSERT(m_pChars); 90 m_pChars->Add(tc); 91 if (m_iWidth < 0) { 92 m_iWidth = tc.m_iCharWidth; 93 } else { 94 m_iWidth += tc.m_iCharWidth; 95 } 96 m_iChars++; 97 } GetEndPos()98 int32_t GetEndPos() const { 99 return m_iWidth < 0 ? m_iStartPos : m_iStartPos + m_iWidth; 100 } GetLength()101 int32_t GetLength() const { return m_iChars; } GetEndChar()102 int32_t GetEndChar() const { return m_iStartChar + m_iChars; } GetChar(int32_t index)103 CFX_RTFChar& GetChar(int32_t index) { 104 ASSERT(index > -1 && index < m_iChars && m_pChars); 105 return *m_pChars->GetDataPtr(m_iStartChar + index); 106 } GetCharPtr(int32_t index)107 CFX_RTFChar* GetCharPtr(int32_t index) const { 108 ASSERT(index > -1 && index < m_iChars && m_pChars); 109 return m_pChars->GetDataPtr(m_iStartChar + index); 110 } GetString(FX_WCHAR * pText)111 void GetString(FX_WCHAR* pText) const { 112 ASSERT(pText); 113 int32_t iEndChar = m_iStartChar + m_iChars; 114 CFX_RTFChar* pChar; 115 for (int32_t i = m_iStartChar; i < iEndChar; i++) { 116 pChar = m_pChars->GetDataPtr(i); 117 *pText++ = (FX_WCHAR)pChar->m_wCharCode; 118 } 119 } GetString(CFX_WideString & wsText)120 void GetString(CFX_WideString& wsText) const { 121 FX_WCHAR* pText = wsText.GetBuffer(m_iChars); 122 GetString(pText); 123 wsText.ReleaseBuffer(m_iChars); 124 } GetWidths(int32_t * pWidths)125 void GetWidths(int32_t* pWidths) const { 126 ASSERT(pWidths); 127 int32_t iEndChar = m_iStartChar + m_iChars; 128 CFX_RTFChar* pChar; 129 for (int32_t i = m_iStartChar; i < iEndChar; i++) { 130 pChar = m_pChars->GetDataPtr(i); 131 *pWidths++ = pChar->m_iCharWidth; 132 } 133 } Reset()134 void Reset() { 135 m_dwStatus = FX_RTFBREAK_PieceBreak; 136 if (m_iWidth > -1) { 137 m_iStartPos += m_iWidth; 138 } 139 m_iWidth = -1; 140 m_iStartChar += m_iChars; 141 m_iChars = 0; 142 m_iBidiLevel = 0; 143 m_iBidiPos = 0; 144 m_iHorizontalScale = 100; 145 m_iVerticalScale = 100; 146 } 147 148 uint32_t m_dwStatus; 149 int32_t m_iStartPos; 150 int32_t m_iWidth; 151 int32_t m_iStartChar; 152 int32_t m_iChars; 153 int32_t m_iBidiLevel; 154 int32_t m_iBidiPos; 155 int32_t m_iFontSize; 156 int32_t m_iFontHeight; 157 int32_t m_iHorizontalScale; 158 int32_t m_iVerticalScale; 159 uint32_t m_dwLayoutStyles; 160 uint32_t m_dwIdentity; 161 CFX_RTFCharArray* m_pChars; 162 IFX_Retainable* m_pUserData; 163 }; 164 165 typedef CFX_BaseArrayTemplate<CFX_RTFPiece> CFX_RTFPieceArray; 166 167 class CFX_RTFLine { 168 public: 169 CFX_RTFLine(); 170 ~CFX_RTFLine(); 171 CountChars()172 int32_t CountChars() const { return m_LineChars.GetSize(); } GetChar(int32_t index)173 CFX_RTFChar& GetChar(int32_t index) { 174 ASSERT(index > -1 && index < m_LineChars.GetSize()); 175 return *m_LineChars.GetDataPtr(index); 176 } GetCharPtr(int32_t index)177 CFX_RTFChar* GetCharPtr(int32_t index) { 178 ASSERT(index > -1 && index < m_LineChars.GetSize()); 179 return m_LineChars.GetDataPtr(index); 180 } CountPieces()181 int32_t CountPieces() const { return m_LinePieces.GetSize(); } GetPiece(int32_t index)182 CFX_RTFPiece& GetPiece(int32_t index) const { 183 ASSERT(index > -1 && index < m_LinePieces.GetSize()); 184 return m_LinePieces.GetAt(index); 185 } GetPiecePtr(int32_t index)186 CFX_RTFPiece* GetPiecePtr(int32_t index) const { 187 ASSERT(index > -1 && index < m_LinePieces.GetSize()); 188 return m_LinePieces.GetPtrAt(index); 189 } GetLineEnd()190 int32_t GetLineEnd() const { return m_iStart + m_iWidth; } 191 void RemoveAll(FX_BOOL bLeaveMemory = FALSE) { 192 CFX_RTFChar* pChar; 193 int32_t iCount = m_LineChars.GetSize(); 194 for (int32_t i = 0; i < iCount; i++) { 195 pChar = m_LineChars.GetDataPtr(i); 196 if (pChar->m_pUserData) 197 pChar->m_pUserData->Release(); 198 } 199 m_LineChars.RemoveAll(); 200 m_LinePieces.RemoveAll(bLeaveMemory); 201 m_iWidth = 0; 202 m_iArabicChars = 0; 203 m_iMBCSChars = 0; 204 } 205 206 CFX_RTFCharArray m_LineChars; 207 CFX_RTFPieceArray m_LinePieces; 208 int32_t m_iStart; 209 int32_t m_iWidth; 210 int32_t m_iArabicChars; 211 int32_t m_iMBCSChars; 212 }; 213 214 class CFX_RTFBreak { 215 public: 216 explicit CFX_RTFBreak(uint32_t dwPolicies); 217 ~CFX_RTFBreak(); 218 219 void SetLineBoundary(FX_FLOAT fLineStart, FX_FLOAT fLineEnd); 220 void SetLineStartPos(FX_FLOAT fLinePos); GetLayoutStyles()221 uint32_t GetLayoutStyles() const { return m_dwLayoutStyles; } 222 void SetLayoutStyles(uint32_t dwLayoutStyles); 223 void SetFont(CFGAS_GEFont* pFont); 224 void SetFontSize(FX_FLOAT fFontSize); 225 void SetTabWidth(FX_FLOAT fTabWidth); 226 void AddPositionedTab(FX_FLOAT fTabPos); 227 void SetPositionedTabs(const CFX_FloatArray& tabs); 228 void ClearPositionedTabs(); 229 void SetDefaultChar(FX_WCHAR wch); 230 void SetLineBreakChar(FX_WCHAR wch); 231 void SetLineBreakTolerance(FX_FLOAT fTolerance); 232 void SetHorizontalScale(int32_t iScale); 233 void SetVerticalScale(int32_t iScale); 234 void SetCharRotation(int32_t iCharRotation); 235 void SetCharSpace(FX_FLOAT fCharSpace); 236 void SetWordSpace(FX_BOOL bDefault, FX_FLOAT fWordSpace); 237 void SetReadingOrder(FX_BOOL bRTL = FALSE); 238 void SetAlignment(int32_t iAlignment = FX_RTFLINEALIGNMENT_Left); 239 void SetUserData(IFX_Retainable* pUserData); 240 uint32_t AppendChar(FX_WCHAR wch); 241 uint32_t EndBreak(uint32_t dwStatus = FX_RTFBREAK_PieceBreak); 242 int32_t CountBreakPieces() const; 243 const CFX_RTFPiece* GetBreakPiece(int32_t index) const; 244 void GetLineRect(CFX_RectF& rect) const; 245 void ClearBreakPieces(); 246 void Reset(); 247 int32_t GetDisplayPos(const FX_RTFTEXTOBJ* pText, 248 FXTEXT_CHARPOS* pCharPos, 249 FX_BOOL bCharCode = FALSE, 250 CFX_WideString* pWSForms = nullptr, 251 FX_AdjustCharDisplayPos pAdjustPos = nullptr) const; 252 int32_t GetCharRects(const FX_RTFTEXTOBJ* pText, 253 CFX_RectFArray& rtArray, 254 FX_BOOL bCharBBox = FALSE) const; 255 uint32_t AppendChar_CharCode(FX_WCHAR wch); 256 uint32_t AppendChar_Combination(CFX_RTFChar* pCurChar, int32_t iRotation); 257 uint32_t AppendChar_Tab(CFX_RTFChar* pCurChar, int32_t iRotation); 258 uint32_t AppendChar_Control(CFX_RTFChar* pCurChar, int32_t iRotation); 259 uint32_t AppendChar_Arabic(CFX_RTFChar* pCurChar, int32_t iRotation); 260 uint32_t AppendChar_Others(CFX_RTFChar* pCurChar, int32_t iRotation); 261 262 protected: 263 int32_t GetLineRotation(uint32_t dwStyles) const; 264 void SetBreakStatus(); 265 CFX_RTFChar* GetLastChar(int32_t index) const; 266 CFX_RTFLine* GetRTFLine(FX_BOOL bReady) const; 267 CFX_RTFPieceArray* GetRTFPieces(FX_BOOL bReady) const; 268 FX_CHARTYPE GetUnifiedCharType(FX_CHARTYPE chartype) const; 269 int32_t GetLastPositionedTab() const; 270 FX_BOOL GetPositionedTab(int32_t& iTabPos) const; 271 272 int32_t GetBreakPos(CFX_RTFCharArray& tca, 273 int32_t& iEndPos, 274 FX_BOOL bAllChars = FALSE, 275 FX_BOOL bOnlyBrk = FALSE); 276 void SplitTextLine(CFX_RTFLine* pCurLine, 277 CFX_RTFLine* pNextLine, 278 FX_BOOL bAllChars = FALSE); 279 FX_BOOL EndBreak_SplitLine(CFX_RTFLine* pNextLine, 280 FX_BOOL bAllChars, 281 uint32_t dwStatus); 282 void EndBreak_BidiLine(CFX_TPOArray& tpos, uint32_t dwStatus); 283 void EndBreak_Alignment(CFX_TPOArray& tpos, 284 FX_BOOL bAllChars, 285 uint32_t dwStatus); 286 287 uint32_t m_dwPolicies; 288 int32_t m_iBoundaryStart; 289 int32_t m_iBoundaryEnd; 290 uint32_t m_dwLayoutStyles; 291 FX_BOOL m_bPagination; 292 FX_BOOL m_bVertical; 293 FX_BOOL m_bSingleLine; 294 FX_BOOL m_bCharCode; 295 CFGAS_GEFont* m_pFont; 296 int32_t m_iFontHeight; 297 int32_t m_iFontSize; 298 int32_t m_iTabWidth; 299 CFX_Int32Array m_PositionedTabs; 300 FX_BOOL m_bOrphanLine; 301 FX_WCHAR m_wDefChar; 302 int32_t m_iDefChar; 303 FX_WCHAR m_wLineBreakChar; 304 int32_t m_iHorizontalScale; 305 int32_t m_iVerticalScale; 306 int32_t m_iLineRotation; 307 int32_t m_iCharRotation; 308 int32_t m_iRotation; 309 int32_t m_iCharSpace; 310 FX_BOOL m_bWordSpace; 311 int32_t m_iWordSpace; 312 FX_BOOL m_bRTL; 313 int32_t m_iAlignment; 314 IFX_Retainable* m_pUserData; 315 FX_CHARTYPE m_eCharType; 316 uint32_t m_dwIdentity; 317 CFX_RTFLine m_RTFLine1; 318 CFX_RTFLine m_RTFLine2; 319 CFX_RTFLine* m_pCurLine; 320 int32_t m_iReady; 321 int32_t m_iTolerance; 322 }; 323 324 #endif // XFA_FGAS_LAYOUT_FGAS_RTFBREAK_H_ 325