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// 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_SRC_FGAS_SRC_LAYOUT_FX_TEXTBREAK_H_
#define XFA_SRC_FGAS_SRC_LAYOUT_FX_TEXTBREAK_H_
#include "core/include/fxcrt/fx_memory.h"
class IFX_ArabicChar;
class CFX_Txtbreak;
class CFX_TxtLine {
public:
CFX_TxtLine(int32_t iBlockSize)
: m_iStart(0), m_iWidth(0), m_iArabicChars(0) {
m_pLineChars = new CFX_TxtCharArray;
m_pLinePieces = new CFX_TxtPieceArray(16);
}
~CFX_TxtLine() {
RemoveAll();
delete m_pLineChars;
delete m_pLinePieces;
}
int32_t CountChars() const { return m_pLineChars->GetSize(); }
CFX_TxtChar* GetCharPtr(int32_t index) const {
FXSYS_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 {
FXSYS_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(FX_BOOL bLeaveMemory = FALSE) {
m_pLineChars->RemoveAll();
m_pLinePieces->RemoveAll(bLeaveMemory);
m_iWidth = 0;
m_iArabicChars = 0;
}
CFX_TxtCharArray* m_pLineChars;
CFX_TxtPieceArray* m_pLinePieces;
int32_t m_iStart;
int32_t m_iWidth;
int32_t m_iArabicChars;
};
class CFX_TxtBreak : public IFX_TxtBreak {
public:
CFX_TxtBreak(FX_DWORD dwPolicies);
~CFX_TxtBreak();
virtual void Release() { delete this; }
virtual void SetLineWidth(FX_FLOAT fLineWidth);
virtual void SetLinePos(FX_FLOAT fLinePos);
virtual FX_DWORD GetLayoutStyles() const { return m_dwLayoutStyles; }
virtual void SetLayoutStyles(FX_DWORD dwLayoutStyles);
virtual void SetFont(IFX_Font* pFont);
virtual void SetFontSize(FX_FLOAT fFontSize);
virtual void SetTabWidth(FX_FLOAT fTabWidth, FX_BOOL bEquidistant);
virtual void SetDefaultChar(FX_WCHAR wch);
virtual void SetParagraphBreakChar(FX_WCHAR wch);
virtual void SetLineBreakTolerance(FX_FLOAT fTolerance);
virtual void SetHorizontalScale(int32_t iScale);
virtual void SetVerticalScale(int32_t iScale);
virtual void SetCharRotation(int32_t iCharRotation);
virtual void SetCharSpace(FX_FLOAT fCharSpace);
virtual void SetAlignment(int32_t iAlignment);
virtual FX_DWORD GetContextCharStyles() const;
virtual void SetContextCharStyles(FX_DWORD dwCharStyles);
virtual void SetCombWidth(FX_FLOAT fCombWidth);
virtual void SetUserData(void* pUserData);
virtual FX_DWORD AppendChar(FX_WCHAR wch);
virtual FX_DWORD EndBreak(FX_DWORD dwStatus = FX_TXTBREAK_PieceBreak);
virtual int32_t CountBreakChars() const;
virtual int32_t CountBreakPieces() const;
virtual const CFX_TxtPiece* GetBreakPiece(int32_t index) const;
virtual void ClearBreakPieces();
virtual void Reset();
virtual int32_t GetDisplayPos(
FX_LPCTXTRUN pTxtRun,
FXTEXT_CHARPOS* pCharPos,
FX_BOOL bCharCode = FALSE,
CFX_WideString* pWSForms = NULL,
FX_AdjustCharDisplayPos pAdjustPos = NULL) const;
virtual int32_t GetCharRects(FX_LPCTXTRUN pTxtRun,
CFX_RectFArray& rtArray,
FX_BOOL bCharBBox = FALSE) const;
void AppendChar_PageLoad(CFX_Char* pCurChar, FX_DWORD dwProps);
FX_DWORD AppendChar_Combination(CFX_Char* pCurChar, int32_t iRotation);
FX_DWORD AppendChar_Tab(CFX_Char* pCurChar, int32_t iRotation);
FX_DWORD AppendChar_Control(CFX_Char* pCurChar, int32_t iRotation);
FX_DWORD AppendChar_Arabic(CFX_Char* pCurChar, int32_t iRotation);
FX_DWORD AppendChar_Others(CFX_Char* pCurChar, int32_t iRotation);
protected:
FX_DWORD m_dwPolicies;
FX_BOOL m_bPagination;
IFX_ArabicChar* m_pArabicChar;
int32_t m_iLineWidth;
FX_DWORD m_dwLayoutStyles;
FX_BOOL m_bVertical;
FX_BOOL m_bArabicContext;
FX_BOOL m_bArabicShapes;
FX_BOOL m_bRTL;
FX_BOOL m_bSingleLine;
FX_BOOL m_bCombText;
int32_t m_iArabicContext;
int32_t m_iCurArabicContext;
IFX_Font* m_pFont;
int32_t m_iFontSize;
FX_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;
FX_DWORD m_dwContextCharStyles;
int32_t m_iCombWidth;
void* m_pUserData;
FX_DWORD m_dwCharType;
FX_BOOL m_bCurRTL;
int32_t m_iCurAlignment;
FX_BOOL m_bArabicNumber;
FX_BOOL m_bArabicComma;
CFX_TxtLine* m_pTxtLine1;
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;
void SetBreakStatus();
int32_t GetLineRotation(FX_DWORD dwStyles) const;
CFX_TxtChar* GetLastChar(int32_t index, FX_BOOL bOmitChar = TRUE) const;
CFX_TxtLine* GetTxtLine(FX_BOOL bReady) const;
CFX_TxtPieceArray* GetTxtPieces(FX_BOOL bReady) const;
FX_DWORD GetUnifiedCharType(FX_DWORD dwType) const;
void ResetArabicContext();
void ResetContextCharStyles();
void EndBreak_UpdateArabicShapes();
FX_BOOL EndBreak_SplitLine(CFX_TxtLine* pNextLine,
FX_BOOL bAllChars,
FX_DWORD dwStatus);
void EndBreak_BidiLine(CFX_TPOArray& tpos, FX_DWORD dwStatus);
void EndBreak_Alignment(CFX_TPOArray& tpos,
FX_BOOL bAllChars,
FX_DWORD dwStatus);
int32_t GetBreakPos(CFX_TxtCharArray& ca,
int32_t& iEndPos,
FX_BOOL bAllChars = FALSE,
FX_BOOL bOnlyBrk = FALSE);
void SplitTextLine(CFX_TxtLine* pCurLine,
CFX_TxtLine* pNextLine,
FX_BOOL bAllChars = FALSE);
};
#endif // XFA_SRC_FGAS_SRC_LAYOUT_FX_TEXTBREAK_H_
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