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 _FX_TEXTBREAK_IMP 8 #define _FX_TEXTBREAK_IMP 9 10 #include "core/include/fxcrt/fx_memory.h" 11 12 class IFX_ArabicChar; 13 class CFX_Txtbreak; 14 15 class CFX_TxtLine { 16 public: 17 CFX_TxtLine(int32_t iBlockSize) 18 : m_iStart(0), m_iWidth(0), m_iArabicChars(0) { 19 m_pLineChars = new CFX_TxtCharArray; 20 m_pLinePieces = new CFX_TxtPieceArray(16); 21 } 22 ~CFX_TxtLine() { 23 RemoveAll(); 24 delete m_pLineChars; 25 delete m_pLinePieces; 26 } 27 int32_t CountChars() const { return m_pLineChars->GetSize(); } 28 CFX_TxtChar* GetCharPtr(int32_t index) const { 29 FXSYS_assert(index > -1 && index < m_pLineChars->GetSize()); 30 return m_pLineChars->GetDataPtr(index); 31 } 32 int32_t CountPieces() const { return m_pLinePieces->GetSize(); } 33 CFX_TxtPiece* GetPiecePtr(int32_t index) const { 34 FXSYS_assert(index > -1 && index < m_pLinePieces->GetSize()); 35 return m_pLinePieces->GetPtrAt(index); 36 } 37 void GetString(CFX_WideString& wsStr) const { 38 int32_t iCount = m_pLineChars->GetSize(); 39 FX_WCHAR* pBuf = wsStr.GetBuffer(iCount); 40 CFX_Char* pChar; 41 for (int32_t i = 0; i < iCount; i++) { 42 pChar = m_pLineChars->GetDataPtr(i); 43 *pBuf++ = (FX_WCHAR)pChar->m_wCharCode; 44 } 45 wsStr.ReleaseBuffer(iCount); 46 } 47 void RemoveAll(FX_BOOL bLeaveMemory = FALSE) { 48 m_pLineChars->RemoveAll(); 49 m_pLinePieces->RemoveAll(bLeaveMemory); 50 m_iWidth = 0; 51 m_iArabicChars = 0; 52 } 53 CFX_TxtCharArray* m_pLineChars; 54 CFX_TxtPieceArray* m_pLinePieces; 55 int32_t m_iStart; 56 int32_t m_iWidth; 57 int32_t m_iArabicChars; 58 }; 59 class CFX_TxtBreak : public IFX_TxtBreak { 60 public: 61 CFX_TxtBreak(FX_DWORD dwPolicies); 62 ~CFX_TxtBreak(); 63 virtual void Release() { delete this; } 64 virtual void SetLineWidth(FX_FLOAT fLineWidth); 65 virtual void SetLinePos(FX_FLOAT fLinePos); 66 virtual FX_DWORD GetLayoutStyles() const { return m_dwLayoutStyles; } 67 virtual void SetLayoutStyles(FX_DWORD dwLayoutStyles); 68 virtual void SetFont(IFX_Font* pFont); 69 virtual void SetFontSize(FX_FLOAT fFontSize); 70 virtual void SetTabWidth(FX_FLOAT fTabWidth, FX_BOOL bEquidistant); 71 virtual void SetDefaultChar(FX_WCHAR wch); 72 virtual void SetParagraphBreakChar(FX_WCHAR wch); 73 virtual void SetLineBreakTolerance(FX_FLOAT fTolerance); 74 virtual void SetHorizontalScale(int32_t iScale); 75 virtual void SetVerticalScale(int32_t iScale); 76 virtual void SetCharRotation(int32_t iCharRotation); 77 virtual void SetCharSpace(FX_FLOAT fCharSpace); 78 virtual void SetAlignment(int32_t iAlignment); 79 virtual FX_DWORD GetContextCharStyles() const; 80 virtual void SetContextCharStyles(FX_DWORD dwCharStyles); 81 virtual void SetCombWidth(FX_FLOAT fCombWidth); 82 virtual void SetUserData(void* pUserData); 83 virtual FX_DWORD AppendChar(FX_WCHAR wch); 84 virtual FX_DWORD EndBreak(FX_DWORD dwStatus = FX_TXTBREAK_PieceBreak); 85 virtual int32_t CountBreakChars() const; 86 virtual int32_t CountBreakPieces() const; 87 virtual const CFX_TxtPiece* GetBreakPiece(int32_t index) const; 88 virtual void ClearBreakPieces(); 89 virtual void Reset(); 90 virtual int32_t GetDisplayPos( 91 FX_LPCTXTRUN pTxtRun, 92 FXTEXT_CHARPOS* pCharPos, 93 FX_BOOL bCharCode = FALSE, 94 CFX_WideString* pWSForms = NULL, 95 FX_AdjustCharDisplayPos pAdjustPos = NULL) const; 96 virtual int32_t GetCharRects(FX_LPCTXTRUN pTxtRun, 97 CFX_RectFArray& rtArray, 98 FX_BOOL bCharBBox = FALSE) const; 99 void AppendChar_PageLoad(CFX_Char* pCurChar, FX_DWORD dwProps); 100 FX_DWORD AppendChar_Combination(CFX_Char* pCurChar, int32_t iRotation); 101 FX_DWORD AppendChar_Tab(CFX_Char* pCurChar, int32_t iRotation); 102 FX_DWORD AppendChar_Control(CFX_Char* pCurChar, int32_t iRotation); 103 FX_DWORD AppendChar_Arabic(CFX_Char* pCurChar, int32_t iRotation); 104 FX_DWORD AppendChar_Others(CFX_Char* pCurChar, int32_t iRotation); 105 106 protected: 107 FX_DWORD m_dwPolicies; 108 FX_BOOL m_bPagination; 109 IFX_ArabicChar* m_pArabicChar; 110 int32_t m_iLineWidth; 111 FX_DWORD m_dwLayoutStyles; 112 FX_BOOL m_bVertical; 113 FX_BOOL m_bArabicContext; 114 FX_BOOL m_bArabicShapes; 115 FX_BOOL m_bRTL; 116 FX_BOOL m_bSingleLine; 117 FX_BOOL m_bCombText; 118 int32_t m_iArabicContext; 119 int32_t m_iCurArabicContext; 120 IFX_Font* m_pFont; 121 int32_t m_iFontSize; 122 FX_BOOL m_bEquidistant; 123 int32_t m_iTabWidth; 124 FX_WCHAR m_wDefChar; 125 FX_WCHAR m_wParagBreakChar; 126 int32_t m_iDefChar; 127 int32_t m_iLineRotation; 128 int32_t m_iCharRotation; 129 int32_t m_iRotation; 130 int32_t m_iAlignment; 131 FX_DWORD m_dwContextCharStyles; 132 int32_t m_iCombWidth; 133 void* m_pUserData; 134 FX_DWORD m_dwCharType; 135 FX_BOOL m_bCurRTL; 136 int32_t m_iCurAlignment; 137 FX_BOOL m_bArabicNumber; 138 FX_BOOL m_bArabicComma; 139 CFX_TxtLine* m_pTxtLine1; 140 CFX_TxtLine* m_pTxtLine2; 141 CFX_TxtLine* m_pCurLine; 142 int32_t m_iReady; 143 int32_t m_iTolerance; 144 int32_t m_iHorScale; 145 int32_t m_iVerScale; 146 int32_t m_iCharSpace; 147 void SetBreakStatus(); 148 int32_t GetLineRotation(FX_DWORD dwStyles) const; 149 CFX_TxtChar* GetLastChar(int32_t index, FX_BOOL bOmitChar = TRUE) const; 150 CFX_TxtLine* GetTxtLine(FX_BOOL bReady) const; 151 CFX_TxtPieceArray* GetTxtPieces(FX_BOOL bReady) const; 152 FX_DWORD GetUnifiedCharType(FX_DWORD dwType) const; 153 void ResetArabicContext(); 154 void ResetContextCharStyles(); 155 void EndBreak_UpdateArabicShapes(); 156 FX_BOOL EndBreak_SplitLine(CFX_TxtLine* pNextLine, 157 FX_BOOL bAllChars, 158 FX_DWORD dwStatus); 159 void EndBreak_BidiLine(CFX_TPOArray& tpos, FX_DWORD dwStatus); 160 void EndBreak_Alignment(CFX_TPOArray& tpos, 161 FX_BOOL bAllChars, 162 FX_DWORD dwStatus); 163 int32_t GetBreakPos(CFX_TxtCharArray& ca, 164 int32_t& iEndPos, 165 FX_BOOL bAllChars = FALSE, 166 FX_BOOL bOnlyBrk = FALSE); 167 void SplitTextLine(CFX_TxtLine* pCurLine, 168 CFX_TxtLine* pNextLine, 169 FX_BOOL bAllChars = FALSE); 170 }; 171 #endif 172
