| // Copyright 2014 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #ifndef XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_ |
| #define XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_ |
| |
| #include <memory> |
| |
| #include "core/fxcrt/fx_ucd.h" |
| #include "core/fxge/cfx_renderdevice.h" |
| #include "xfa/fgas/crt/fgas_utils.h" |
| #include "xfa/fgas/layout/fgas_unicode.h" |
| |
| class CFX_Char; |
| class CFGAS_GEFont; |
| class CFX_TxtChar; |
| class CFX_TxtPiece; |
| class IFX_TxtAccess; |
| |
| #define FX_TXTBREAKPOLICY_None 0x00 |
| #define FX_TXTBREAKPOLICY_Pagination 0x01 |
| #define FX_TXTBREAKPOLICY_SpaceBreak 0x02 |
| #define FX_TXTBREAKPOLICY_NumberBreak 0x04 |
| #define FX_TXTBREAK_None 0x00 |
| #define FX_TXTBREAK_PieceBreak 0x01 |
| #define FX_TXTBREAK_LineBreak 0x02 |
| #define FX_TXTBREAK_ParagraphBreak 0x03 |
| #define FX_TXTBREAK_PageBreak 0x04 |
| #define FX_TXTBREAK_ControlChar 0x10 |
| #define FX_TXTBREAK_BreakChar 0x20 |
| #define FX_TXTBREAK_UnknownChar 0x40 |
| #define FX_TXTBREAK_RemoveChar 0x80 |
| #define FX_TXTLAYOUTSTYLE_MutipleFormat 0x0001 |
| #define FX_TXTLAYOUTSTYLE_VerticalLayout 0x0002 |
| #define FX_TXTLAYOUTSTYLE_VerticalChars 0x0004 |
| #define FX_TXTLAYOUTSTYLE_ReverseLine 0x0008 |
| #define FX_TXTLAYOUTSTYLE_ArabicContext 0x0010 |
| #define FX_TXTLAYOUTSTYLE_ArabicShapes 0x0020 |
| #define FX_TXTLAYOUTSTYLE_RTLReadingOrder 0x0040 |
| #define FX_TXTLAYOUTSTYLE_ExpandTab 0x0100 |
| #define FX_TXTLAYOUTSTYLE_SingleLine 0x0200 |
| #define FX_TXTLAYOUTSTYLE_CombText 0x0400 |
| #define FX_TXTCHARSTYLE_Alignment 0x000F |
| #define FX_TXTCHARSTYLE_ArabicNumber 0x0010 |
| #define FX_TXTCHARSTYLE_ArabicShadda 0x0020 |
| #define FX_TXTCHARSTYLE_OddBidiLevel 0x0040 |
| #define FX_TXTCHARSTYLE_RTLReadingOrder 0x0080 |
| #define FX_TXTCHARSTYLE_ArabicContext 0x0300 |
| #define FX_TXTCHARSTYLE_ArabicIndic 0x0400 |
| #define FX_TXTCHARSTYLE_ArabicComma 0x0800 |
| #define FX_TXTLINEALIGNMENT_Left 0 |
| #define FX_TXTLINEALIGNMENT_Center 1 |
| #define FX_TXTLINEALIGNMENT_Right 2 |
| #define FX_TXTLINEALIGNMENT_Justified (1 << 2) |
| #define FX_TXTLINEALIGNMENT_Distributed (2 << 2) |
| #define FX_TXTLINEALIGNMENT_JustifiedLeft \ |
| (FX_TXTLINEALIGNMENT_Left | FX_TXTLINEALIGNMENT_Justified) |
| #define FX_TXTLINEALIGNMENT_JustifiedCenter \ |
| (FX_TXTLINEALIGNMENT_Center | FX_TXTLINEALIGNMENT_Justified) |
| #define FX_TXTLINEALIGNMENT_JustifiedRight \ |
| (FX_TXTLINEALIGNMENT_Right | FX_TXTLINEALIGNMENT_Justified) |
| #define FX_TXTLINEALIGNMENT_DistributedLeft \ |
| (FX_TXTLINEALIGNMENT_Left | FX_TXTLINEALIGNMENT_Distributed) |
| #define FX_TXTLINEALIGNMENT_DistributedCenter \ |
| (FX_TXTLINEALIGNMENT_Center | FX_TXTLINEALIGNMENT_Distributed) |
| #define FX_TXTLINEALIGNMENT_DistributedRight \ |
| (FX_TXTLINEALIGNMENT_Right | FX_TXTLINEALIGNMENT_Distributed) |
| #define FX_TXTLINEALIGNMENT_LowerMask 0x03 |
| #define FX_TXTLINEALIGNMENT_HigherMask 0x0C |
| #define FX_TXTBREAK_MinimumTabWidth 160000 |
| |
| struct FDE_TEXTEDITPIECE; |
| |
| class IFX_TxtAccess { |
| public: |
| virtual ~IFX_TxtAccess() {} |
| virtual FX_WCHAR GetChar(const FDE_TEXTEDITPIECE* pIdentity, |
| int32_t index) const = 0; |
| virtual int32_t GetWidth(const FDE_TEXTEDITPIECE* pIdentity, |
| int32_t index) const = 0; |
| }; |
| |
| struct FX_TXTRUN { |
| FX_TXTRUN(); |
| FX_TXTRUN(const FX_TXTRUN& other); |
| ~FX_TXTRUN(); |
| |
| IFX_TxtAccess* pAccess; |
| const FDE_TEXTEDITPIECE* pIdentity; |
| CFX_WideString wsStr; |
| int32_t* pWidths; |
| int32_t iLength; |
| CFGAS_GEFont* pFont; |
| FX_FLOAT fFontSize; |
| uint32_t dwStyles; |
| int32_t iHorizontalScale; |
| int32_t iVerticalScale; |
| int32_t iCharRotation; |
| uint32_t dwCharStyles; |
| const CFX_RectF* pRect; |
| FX_WCHAR wLineBreakChar; |
| bool bSkipSpace; |
| }; |
| |
| class CFX_TxtPiece : public CFX_Target { |
| public: |
| CFX_TxtPiece(); |
| |
| int32_t GetEndPos() const { |
| return m_iWidth < 0 ? m_iStartPos : m_iStartPos + m_iWidth; |
| } |
| int32_t GetLength() const { return m_iChars; } |
| int32_t GetEndChar() const { return m_iStartChar + m_iChars; } |
| CFX_TxtChar* GetCharPtr(int32_t index) const { |
| ASSERT(index > -1 && index < m_iChars && m_pChars); |
| return m_pChars->GetDataPtr(m_iStartChar + index); |
| } |
| void GetString(FX_WCHAR* pText) const { |
| ASSERT(pText); |
| int32_t iEndChar = m_iStartChar + m_iChars; |
| CFX_Char* pChar; |
| for (int32_t i = m_iStartChar; i < iEndChar; i++) { |
| pChar = m_pChars->GetDataPtr(i); |
| *pText++ = (FX_WCHAR)pChar->m_wCharCode; |
| } |
| } |
| void GetString(CFX_WideString& wsText) const { |
| FX_WCHAR* pText = wsText.GetBuffer(m_iChars); |
| GetString(pText); |
| wsText.ReleaseBuffer(m_iChars); |
| } |
| void GetWidths(int32_t* pWidths) const { |
| ASSERT(pWidths); |
| int32_t iEndChar = m_iStartChar + m_iChars; |
| CFX_Char* pChar; |
| for (int32_t i = m_iStartChar; i < iEndChar; i++) { |
| pChar = m_pChars->GetDataPtr(i); |
| *pWidths++ = pChar->m_iCharWidth; |
| } |
| } |
| |
| uint32_t m_dwStatus; |
| int32_t m_iStartPos; |
| int32_t m_iWidth; |
| int32_t m_iStartChar; |
| int32_t m_iChars; |
| int32_t m_iBidiLevel; |
| int32_t m_iBidiPos; |
| int32_t m_iHorizontalScale; |
| int32_t m_iVerticalScale; |
| uint32_t m_dwCharStyles; |
| CFX_TxtCharArray* m_pChars; |
| void* m_pUserData; |
| }; |
| |
| typedef CFX_BaseArrayTemplate<CFX_TxtPiece> CFX_TxtPieceArray; |
| |
| class CFX_TxtLine { |
| public: |
| explicit CFX_TxtLine(int32_t iBlockSize); |
| ~CFX_TxtLine(); |
| |
| int32_t CountChars() const { return m_pLineChars->GetSize(); } |
| CFX_TxtChar* GetCharPtr(int32_t index) const { |
| ASSERT(index > -1 && index < m_pLineChars->GetSize()); |
| return m_pLineChars->GetDataPtr(index); |
| } |
| int32_t CountPieces() const { return m_pLinePieces->GetSize(); } |
| CFX_TxtPiece* GetPiecePtr(int32_t index) const { |
| ASSERT(index > -1 && index < m_pLinePieces->GetSize()); |
| return m_pLinePieces->GetPtrAt(index); |
| } |
| void GetString(CFX_WideString& wsStr) const { |
| int32_t iCount = m_pLineChars->GetSize(); |
| FX_WCHAR* pBuf = wsStr.GetBuffer(iCount); |
| CFX_Char* pChar; |
| for (int32_t i = 0; i < iCount; i++) { |
| pChar = m_pLineChars->GetDataPtr(i); |
| *pBuf++ = (FX_WCHAR)pChar->m_wCharCode; |
| } |
| wsStr.ReleaseBuffer(iCount); |
| } |
| void RemoveAll(bool bLeaveMemory = false) { |
| m_pLineChars->RemoveAll(); |
| m_pLinePieces->RemoveAll(bLeaveMemory); |
| m_iWidth = 0; |
| m_iArabicChars = 0; |
| } |
| |
| std::unique_ptr<CFX_TxtCharArray> m_pLineChars; |
| std::unique_ptr<CFX_TxtPieceArray> m_pLinePieces; |
| int32_t m_iStart; |
| int32_t m_iWidth; |
| int32_t m_iArabicChars; |
| }; |
| |
| class CFX_TxtBreak { |
| public: |
| explicit CFX_TxtBreak(uint32_t dwPolicies); |
| ~CFX_TxtBreak(); |
| |
| void SetLineWidth(FX_FLOAT fLineWidth); |
| void SetLinePos(FX_FLOAT fLinePos); |
| uint32_t GetLayoutStyles() const { return m_dwLayoutStyles; } |
| void SetLayoutStyles(uint32_t dwLayoutStyles); |
| void SetFont(CFGAS_GEFont* pFont); |
| void SetFontSize(FX_FLOAT fFontSize); |
| void SetTabWidth(FX_FLOAT fTabWidth, bool bEquidistant); |
| void SetDefaultChar(FX_WCHAR wch); |
| void SetParagraphBreakChar(FX_WCHAR wch); |
| void SetLineBreakTolerance(FX_FLOAT fTolerance); |
| void SetHorizontalScale(int32_t iScale); |
| void SetVerticalScale(int32_t iScale); |
| void SetCharRotation(int32_t iCharRotation); |
| void SetCharSpace(FX_FLOAT fCharSpace); |
| void SetAlignment(int32_t iAlignment); |
| uint32_t GetContextCharStyles() const; |
| void SetContextCharStyles(uint32_t dwCharStyles); |
| void SetCombWidth(FX_FLOAT fCombWidth); |
| void SetUserData(void* pUserData); |
| uint32_t AppendChar(FX_WCHAR wch); |
| uint32_t EndBreak(uint32_t dwStatus = FX_TXTBREAK_PieceBreak); |
| int32_t CountBreakChars() const; |
| int32_t CountBreakPieces() const; |
| const CFX_TxtPiece* GetBreakPiece(int32_t index) const; |
| void ClearBreakPieces(); |
| void Reset(); |
| int32_t GetDisplayPos(const FX_TXTRUN* pTxtRun, |
| FXTEXT_CHARPOS* pCharPos, |
| bool bCharCode = false, |
| CFX_WideString* pWSForms = nullptr, |
| FX_AdjustCharDisplayPos pAdjustPos = nullptr) const; |
| int32_t GetCharRects(const FX_TXTRUN* pTxtRun, |
| CFX_RectFArray& rtArray, |
| bool bCharBBox = false) const; |
| void AppendChar_PageLoad(CFX_TxtChar* pCurChar, uint32_t dwProps); |
| uint32_t AppendChar_Combination(CFX_TxtChar* pCurChar, int32_t iRotation); |
| uint32_t AppendChar_Tab(CFX_TxtChar* pCurChar, int32_t iRotation); |
| uint32_t AppendChar_Control(CFX_TxtChar* pCurChar, int32_t iRotation); |
| uint32_t AppendChar_Arabic(CFX_TxtChar* pCurChar, int32_t iRotation); |
| uint32_t AppendChar_Others(CFX_TxtChar* pCurChar, int32_t iRotation); |
| |
| private: |
| void SetBreakStatus(); |
| int32_t GetLineRotation(uint32_t dwStyles) const; |
| CFX_TxtChar* GetLastChar(int32_t index, bool bOmitChar = true) const; |
| CFX_TxtLine* GetTxtLine(bool bReady) const; |
| CFX_TxtPieceArray* GetTxtPieces(bool bReady) const; |
| FX_CHARTYPE GetUnifiedCharType(FX_CHARTYPE dwType) const; |
| void ResetArabicContext(); |
| void ResetContextCharStyles(); |
| void EndBreak_UpdateArabicShapes(); |
| bool EndBreak_SplitLine(CFX_TxtLine* pNextLine, |
| bool bAllChars, |
| uint32_t dwStatus); |
| void EndBreak_BidiLine(CFX_TPOArray& tpos, uint32_t dwStatus); |
| void EndBreak_Alignment(CFX_TPOArray& tpos, |
| bool bAllChars, |
| uint32_t dwStatus); |
| int32_t GetBreakPos(CFX_TxtCharArray& ca, |
| int32_t& iEndPos, |
| bool bAllChars = false, |
| bool bOnlyBrk = false); |
| void SplitTextLine(CFX_TxtLine* pCurLine, |
| CFX_TxtLine* pNextLine, |
| bool bAllChars = false); |
| |
| uint32_t m_dwPolicies; |
| bool m_bPagination; |
| int32_t m_iLineWidth; |
| uint32_t m_dwLayoutStyles; |
| bool m_bVertical; |
| bool m_bArabicContext; |
| bool m_bArabicShapes; |
| bool m_bRTL; |
| bool m_bSingleLine; |
| bool m_bCombText; |
| int32_t m_iArabicContext; |
| int32_t m_iCurArabicContext; |
| CFGAS_GEFont* m_pFont; |
| int32_t m_iFontSize; |
| bool m_bEquidistant; |
| int32_t m_iTabWidth; |
| FX_WCHAR m_wDefChar; |
| FX_WCHAR m_wParagBreakChar; |
| int32_t m_iDefChar; |
| int32_t m_iLineRotation; |
| int32_t m_iCharRotation; |
| int32_t m_iRotation; |
| int32_t m_iAlignment; |
| uint32_t m_dwContextCharStyles; |
| int32_t m_iCombWidth; |
| void* m_pUserData; |
| FX_CHARTYPE m_eCharType; |
| bool m_bCurRTL; |
| int32_t m_iCurAlignment; |
| bool m_bArabicNumber; |
| bool m_bArabicComma; |
| std::unique_ptr<CFX_TxtLine> m_pTxtLine1; |
| std::unique_ptr<CFX_TxtLine> m_pTxtLine2; |
| CFX_TxtLine* m_pCurLine; |
| int32_t m_iReady; |
| int32_t m_iTolerance; |
| int32_t m_iHorScale; |
| int32_t m_iVerScale; |
| int32_t m_iCharSpace; |
| }; |
| |
| #endif // XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_ |