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_RTFBREAK 8 #define _FX_RTFBREAK 9 class IFX_Unknown; 10 class IFX_Font; 11 class CFX_Char; 12 class CFX_RTFChar; 13 class CFX_RTFBreakPiece; 14 class IFX_RTFBreak; 15 #define FX_RTFBREAKPOLICY_None 0x00 16 #define FX_RTFBREAKPOLICY_SpaceBreak 0x01 17 #define FX_RTFBREAKPOLICY_NumberBreak 0x02 18 #define FX_RTFBREAKPOLICY_InfixBreak 0x04 19 #define FX_RTFBREAKPOLICY_TabBreak 0x08 20 #define FX_RTFBREAKPOLICY_OrphanPositionedTab 0x10 21 #define FX_RTFBREAK_None 0x00 22 #define FX_RTFBREAK_PieceBreak 0x01 23 #define FX_RTFBREAK_LineBreak 0x02 24 #define FX_RTFBREAK_ParagraphBreak 0x03 25 #define FX_RTFBREAK_PageBreak 0x04 26 #define FX_RTFLAYOUTSTYLE_Pagination 0x01 27 #define FX_RTFLAYOUTSTYLE_VerticalLayout 0x02 28 #define FX_RTFLAYOUTSTYLE_VerticalChars 0x04 29 #define FX_RTFLAYOUTSTYLE_LineDirection 0x08 30 #define FX_RTFLAYOUTSTYLE_ExpandTab 0x10 31 #define FX_RTFLAYOUTSTYLE_ArabicNumber 0x20 32 #define FX_RTFLAYOUTSTYLE_SingleLine 0x40 33 #define FX_RTFLAYOUTSTYLE_MBCSCode 0x80 34 #define FX_RTFCHARSTYLE_Alignment 0x000F 35 #define FX_RTFCHARSTYLE_ArabicNumber 0x0010 36 #define FX_RTFCHARSTYLE_ArabicShadda 0x0020 37 #define FX_RTFCHARSTYLE_OddBidiLevel 0x0040 38 #define FX_RTFCHARSTYLE_RTLReadingOrder 0x0080 39 #define FX_RTFCHARSTYLE_ArabicContext 0x0300 40 #define FX_RTFCHARSTYLE_ArabicIndic 0x0400 41 #define FX_RTFCHARSTYLE_ArabicComma 0x0800 42 #define FX_RTFLINEALIGNMENT_Left 0 43 #define FX_RTFLINEALIGNMENT_Center 1 44 #define FX_RTFLINEALIGNMENT_Right 2 45 #define FX_RTFLINEALIGNMENT_Justified (1 << 2) 46 #define FX_RTFLINEALIGNMENT_Distributed (2 << 2) 47 #define FX_RTFLINEALIGNMENT_JustifiedLeft \ 48 (FX_RTFLINEALIGNMENT_Left | FX_RTFLINEALIGNMENT_Justified) 49 #define FX_RTFLINEALIGNMENT_JustifiedCenter \ 50 (FX_RTFLINEALIGNMENT_Center | FX_RTFLINEALIGNMENT_Justified) 51 #define FX_RTFLINEALIGNMENT_JustifiedRight \ 52 (FX_RTFLINEALIGNMENT_Right | FX_RTFLINEALIGNMENT_Justified) 53 #define FX_RTFLINEALIGNMENT_DistributedLeft \ 54 (FX_RTFLINEALIGNMENT_Left | FX_RTFLINEALIGNMENT_Distributed) 55 #define FX_RTFLINEALIGNMENT_DistributedCenter \ 56 (FX_RTFLINEALIGNMENT_Center | FX_RTFLINEALIGNMENT_Distributed) 57 #define FX_RTFLINEALIGNMENT_DistributedRight \ 58 (FX_RTFLINEALIGNMENT_Right | FX_RTFLINEALIGNMENT_Distributed) 59 #define FX_RTFLINEALIGNMENT_LowerMask 0x03 60 #define FX_RTFLINEALIGNMENT_HigherMask 0x0C 61 typedef struct _FX_RTFTEXTOBJ { _FX_RTFTEXTOBJ_FX_RTFTEXTOBJ62 _FX_RTFTEXTOBJ() { 63 pStr = NULL; 64 pWidths = NULL; 65 iLength = 0; 66 pFont = NULL; 67 fFontSize = 12.0f; 68 dwLayoutStyles = 0; 69 iCharRotation = 0; 70 iBidiLevel = 0; 71 pRect = NULL; 72 wLineBreakChar = L'\n'; 73 iHorizontalScale = 100; 74 iVerticalScale = 100; 75 } 76 const FX_WCHAR* pStr; 77 int32_t* pWidths; 78 int32_t iLength; 79 IFX_Font* pFont; 80 FX_FLOAT fFontSize; 81 FX_DWORD dwLayoutStyles; 82 int32_t iCharRotation; 83 int32_t iBidiLevel; 84 FX_LPCRECTF pRect; 85 FX_WCHAR wLineBreakChar; 86 int32_t iHorizontalScale; 87 int32_t iVerticalScale; 88 } FX_RTFTEXTOBJ, *FX_LPRTFTEXTOBJ; 89 typedef FX_RTFTEXTOBJ const* FX_LPCRTFTEXTOBJ; 90 class CFX_RTFPiece : public CFX_Target { 91 public: CFX_RTFPiece()92 CFX_RTFPiece() 93 : m_dwStatus(FX_RTFBREAK_PieceBreak), 94 m_iStartPos(0), 95 m_iWidth(-1), 96 m_iStartChar(0), 97 m_iChars(0), 98 m_iBidiLevel(0), 99 m_iBidiPos(0), 100 m_iFontSize(0), 101 m_iFontHeight(0), 102 m_iHorizontalScale(100), 103 m_iVerticalScale(100), 104 m_dwLayoutStyles(0), 105 m_dwIdentity(0), 106 m_pChars(NULL), 107 m_pUserData(NULL) {} ~CFX_RTFPiece()108 ~CFX_RTFPiece() { Reset(); } AppendChar(const CFX_RTFChar & tc)109 void AppendChar(const CFX_RTFChar& tc) { 110 FXSYS_assert(m_pChars != NULL); 111 m_pChars->Add(tc); 112 if (m_iWidth < 0) { 113 m_iWidth = tc.m_iCharWidth; 114 } else { 115 m_iWidth += tc.m_iCharWidth; 116 } 117 m_iChars++; 118 } GetEndPos()119 int32_t GetEndPos() const { 120 return m_iWidth < 0 ? m_iStartPos : m_iStartPos + m_iWidth; 121 } GetLength()122 int32_t GetLength() const { return m_iChars; } GetEndChar()123 int32_t GetEndChar() const { return m_iStartChar + m_iChars; } GetChar(int32_t index)124 CFX_RTFChar& GetChar(int32_t index) { 125 FXSYS_assert(index > -1 && index < m_iChars && m_pChars != NULL); 126 return *m_pChars->GetDataPtr(m_iStartChar + index); 127 } GetCharPtr(int32_t index)128 CFX_RTFChar* GetCharPtr(int32_t index) const { 129 FXSYS_assert(index > -1 && index < m_iChars && m_pChars != NULL); 130 return m_pChars->GetDataPtr(m_iStartChar + index); 131 } GetString(FX_WCHAR * pText)132 void GetString(FX_WCHAR* pText) const { 133 FXSYS_assert(pText != NULL); 134 int32_t iEndChar = m_iStartChar + m_iChars; 135 CFX_RTFChar* pChar; 136 for (int32_t i = m_iStartChar; i < iEndChar; i++) { 137 pChar = m_pChars->GetDataPtr(i); 138 *pText++ = (FX_WCHAR)pChar->m_wCharCode; 139 } 140 } GetString(CFX_WideString & wsText)141 void GetString(CFX_WideString& wsText) const { 142 FX_WCHAR* pText = wsText.GetBuffer(m_iChars); 143 GetString(pText); 144 wsText.ReleaseBuffer(m_iChars); 145 } GetWidths(int32_t * pWidths)146 void GetWidths(int32_t* pWidths) const { 147 FXSYS_assert(pWidths != NULL); 148 int32_t iEndChar = m_iStartChar + m_iChars; 149 CFX_RTFChar* pChar; 150 for (int32_t i = m_iStartChar; i < iEndChar; i++) { 151 pChar = m_pChars->GetDataPtr(i); 152 *pWidths++ = pChar->m_iCharWidth; 153 } 154 } Reset()155 void Reset() { 156 m_dwStatus = FX_RTFBREAK_PieceBreak; 157 if (m_iWidth > -1) { 158 m_iStartPos += m_iWidth; 159 } 160 m_iWidth = -1; 161 m_iStartChar += m_iChars; 162 m_iChars = 0; 163 m_iBidiLevel = 0; 164 m_iBidiPos = 0; 165 m_iHorizontalScale = 100; 166 m_iVerticalScale = 100; 167 } 168 FX_DWORD m_dwStatus; 169 int32_t m_iStartPos; 170 int32_t m_iWidth; 171 int32_t m_iStartChar; 172 int32_t m_iChars; 173 int32_t m_iBidiLevel; 174 int32_t m_iBidiPos; 175 int32_t m_iFontSize; 176 int32_t m_iFontHeight; 177 int32_t m_iHorizontalScale; 178 int32_t m_iVerticalScale; 179 FX_DWORD m_dwLayoutStyles; 180 FX_DWORD m_dwIdentity; 181 CFX_RTFCharArray* m_pChars; 182 IFX_Unknown* m_pUserData; 183 }; 184 typedef CFX_BaseArrayTemplate<CFX_RTFPiece> CFX_RTFPieceArray; 185 class IFX_RTFBreak { 186 public: 187 static IFX_RTFBreak* Create(FX_DWORD dwPolicies); ~IFX_RTFBreak()188 virtual ~IFX_RTFBreak() {} 189 virtual void Release() = 0; 190 virtual void SetLineBoundary(FX_FLOAT fLineStart, FX_FLOAT fLineEnd) = 0; 191 virtual void SetLineStartPos(FX_FLOAT fLinePos) = 0; 192 virtual FX_DWORD GetLayoutStyles() const = 0; 193 virtual void SetLayoutStyles(FX_DWORD dwLayoutStyles) = 0; 194 virtual void SetFont(IFX_Font* pFont) = 0; 195 virtual void SetFontSize(FX_FLOAT fFontSize) = 0; 196 virtual void SetTabWidth(FX_FLOAT fTabWidth) = 0; 197 virtual void AddPositionedTab(FX_FLOAT fTabPos) = 0; 198 virtual void SetPositionedTabs(const CFX_FloatArray& tabs) = 0; 199 virtual void ClearPositionedTabs() = 0; 200 virtual void SetDefaultChar(FX_WCHAR wch) = 0; 201 virtual void SetLineBreakChar(FX_WCHAR wch) = 0; 202 virtual void SetLineBreakTolerance(FX_FLOAT fTolerance) = 0; 203 virtual void SetHorizontalScale(int32_t iScale) = 0; 204 virtual void SetVerticalScale(int32_t iScale) = 0; 205 virtual void SetCharRotation(int32_t iCharRotation) = 0; 206 virtual void SetCharSpace(FX_FLOAT fCharSpace) = 0; 207 virtual void SetWordSpace(FX_BOOL bDefault, FX_FLOAT fWordSpace) = 0; 208 virtual void SetReadingOrder(FX_BOOL bRTL = FALSE) = 0; 209 virtual void SetAlignment(int32_t iAlignment = FX_RTFLINEALIGNMENT_Left) = 0; 210 virtual void SetUserData(IFX_Unknown* pUserData) = 0; 211 virtual FX_DWORD AppendChar(FX_WCHAR wch) = 0; 212 virtual FX_DWORD EndBreak(FX_DWORD dwStatus = FX_RTFBREAK_PieceBreak) = 0; 213 virtual int32_t CountBreakPieces() const = 0; 214 virtual const CFX_RTFPiece* GetBreakPiece(int32_t index) const = 0; 215 virtual void GetLineRect(CFX_RectF& rect) const = 0; 216 virtual void ClearBreakPieces() = 0; 217 virtual void Reset() = 0; 218 virtual int32_t GetDisplayPos( 219 FX_LPCRTFTEXTOBJ pText, 220 FXTEXT_CHARPOS* pCharPos, 221 FX_BOOL bCharCode = FALSE, 222 CFX_WideString* pWSForms = NULL, 223 FX_AdjustCharDisplayPos pAdjustPos = NULL) const = 0; 224 virtual int32_t GetCharRects(FX_LPCRTFTEXTOBJ pText, 225 CFX_RectFArray& rtArray, 226 FX_BOOL bCharBBox = FALSE) const = 0; 227 }; 228 #endif 229