| // 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 _FX_TEXTBREAK |
| #define _FX_TEXTBREAK |
| |
| #include "core/include/fxcrt/fx_ucd.h" |
| |
| class IFX_Font; |
| class CFX_Char; |
| class IFX_TxtAccess; |
| class CFX_TxtChar; |
| class CFX_TxtPiece; |
| class IFX_TxtBreak; |
| #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 |
| |
| class IFX_TxtAccess { |
| public: |
| virtual ~IFX_TxtAccess() {} |
| virtual FX_WCHAR GetChar(void* pIdentity, int32_t index) const = 0; |
| virtual int32_t GetWidth(void* pIdentity, int32_t index) const = 0; |
| }; |
| typedef struct _FX_TXTRUN { |
| _FX_TXTRUN() { |
| pAccess = NULL; |
| pIdentity = NULL; |
| pStr = NULL; |
| pWidths = NULL; |
| iLength = 0; |
| pFont = NULL; |
| fFontSize = 12; |
| dwStyles = 0; |
| iHorizontalScale = 100; |
| iVerticalScale = 100; |
| iCharRotation = 0; |
| dwCharStyles = 0; |
| pRect = NULL; |
| wLineBreakChar = L'\n'; |
| bSkipSpace = TRUE; |
| } |
| IFX_TxtAccess* pAccess; |
| void* pIdentity; |
| const FX_WCHAR* pStr; |
| int32_t* pWidths; |
| int32_t iLength; |
| IFX_Font* pFont; |
| FX_FLOAT fFontSize; |
| FX_DWORD dwStyles; |
| int32_t iHorizontalScale; |
| int32_t iVerticalScale; |
| int32_t iCharRotation; |
| FX_DWORD dwCharStyles; |
| FX_LPCRECTF pRect; |
| FX_WCHAR wLineBreakChar; |
| FX_BOOL bSkipSpace; |
| } FX_TXTRUN, *FX_LPTXTRUN; |
| typedef FX_TXTRUN const* FX_LPCTXTRUN; |
| class CFX_TxtPiece : public CFX_Target { |
| public: |
| CFX_TxtPiece() |
| : m_dwStatus(FX_TXTBREAK_PieceBreak), |
| m_iStartPos(0), |
| m_iWidth(-1), |
| m_iStartChar(0), |
| m_iChars(0), |
| m_iBidiLevel(0), |
| m_iBidiPos(0), |
| m_iHorizontalScale(100), |
| m_iVerticalScale(100), |
| m_dwCharStyles(0), |
| m_pChars(NULL), |
| m_pUserData(NULL) {} |
| 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 { |
| FXSYS_assert(index > -1 && index < m_iChars && m_pChars != NULL); |
| return m_pChars->GetDataPtr(m_iStartChar + index); |
| } |
| void GetString(FX_WCHAR* pText) const { |
| FXSYS_assert(pText != NULL); |
| 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 { |
| FXSYS_assert(pWidths != NULL); |
| 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; |
| } |
| } |
| FX_DWORD 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; |
| FX_DWORD m_dwCharStyles; |
| CFX_TxtCharArray* m_pChars; |
| void* m_pUserData; |
| }; |
| typedef CFX_BaseArrayTemplate<CFX_TxtPiece> CFX_TxtPieceArray; |
| class IFX_TxtBreak { |
| public: |
| static IFX_TxtBreak* Create(FX_DWORD dwPolicies); |
| virtual ~IFX_TxtBreak() {} |
| virtual void Release() = 0; |
| virtual void SetLineWidth(FX_FLOAT fLineWidth) = 0; |
| virtual void SetLinePos(FX_FLOAT fLinePos) = 0; |
| virtual FX_DWORD GetLayoutStyles() const = 0; |
| virtual void SetLayoutStyles(FX_DWORD dwLayoutStyles) = 0; |
| virtual void SetFont(IFX_Font* pFont) = 0; |
| virtual void SetFontSize(FX_FLOAT fFontSize) = 0; |
| virtual void SetTabWidth(FX_FLOAT fTabWidth, FX_BOOL bEquidistant) = 0; |
| virtual void SetDefaultChar(FX_WCHAR wch) = 0; |
| virtual void SetParagraphBreakChar(FX_WCHAR wch) = 0; |
| virtual void SetLineBreakTolerance(FX_FLOAT fTolerance) = 0; |
| virtual void SetHorizontalScale(int32_t iScale) = 0; |
| virtual void SetVerticalScale(int32_t iScale) = 0; |
| virtual void SetCharRotation(int32_t iCharRotation) = 0; |
| virtual void SetCharSpace(FX_FLOAT fCharSpace) = 0; |
| virtual void SetAlignment(int32_t iAlignment) = 0; |
| virtual FX_DWORD GetContextCharStyles() const = 0; |
| virtual void SetContextCharStyles(FX_DWORD dwCharStyles) = 0; |
| virtual void SetCombWidth(FX_FLOAT fCombWidth) = 0; |
| virtual void SetUserData(void* pUserData) = 0; |
| virtual FX_DWORD AppendChar(FX_WCHAR wch) = 0; |
| virtual FX_DWORD EndBreak(FX_DWORD dwStatus = FX_TXTBREAK_PieceBreak) = 0; |
| virtual int32_t CountBreakChars() const = 0; |
| virtual int32_t CountBreakPieces() const = 0; |
| virtual const CFX_TxtPiece* GetBreakPiece(int32_t index) const = 0; |
| virtual void ClearBreakPieces() = 0; |
| virtual void Reset() = 0; |
| virtual int32_t GetDisplayPos( |
| FX_LPCTXTRUN pTxtRun, |
| FXTEXT_CHARPOS* pCharPos, |
| FX_BOOL bCharCode = FALSE, |
| CFX_WideString* pWSForms = NULL, |
| FX_AdjustCharDisplayPos pAdjustPos = NULL) const = 0; |
| virtual int32_t GetCharRects(FX_LPCTXTRUN pTxtRun, |
| CFX_RectFArray& rtArray, |
| FX_BOOL bCharBBox = FALSE) const = 0; |
| }; |
| #endif |
