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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 _FX_TEXTBREAK_IMP
#define _FX_TEXTBREAK_IMP
class CFX_TxtLine;
class CFX_Txtbreak;
class CFX_TxtLine
{
public:
CFX_TxtLine(FX_INT32 iBlockSize) : m_iStart(0)
, m_iWidth(0)
, m_iArabicChars(0)
{
m_pLineChars = FX_NEW CFX_TxtCharArray;
m_pLinePieces = FXTARGET_New CFX_TxtPieceArray(16);
}
~CFX_TxtLine()
{
RemoveAll();
delete m_pLineChars;
FXTARGET_Delete m_pLinePieces;
}
FX_INT32 CountChars() const
{
return m_pLineChars->GetSize();
}
CFX_TxtChar* GetCharPtr(FX_INT32 index) const
{
FXSYS_assert(index > -1 && index < m_pLineChars->GetSize());
return m_pLineChars->GetDataPtr(index);
}
FX_INT32 CountPieces() const
{
return m_pLinePieces->GetSize();
}
CFX_TxtPiece* GetPiecePtr(FX_INT32 index) const
{
FXSYS_assert(index > -1 && index < m_pLinePieces->GetSize());
return m_pLinePieces->GetPtrAt(index);
}
void GetString(CFX_WideString &wsStr) const
{
FX_INT32 iCount = m_pLineChars->GetSize();
FX_LPWSTR pBuf = wsStr.GetBuffer(iCount);
CFX_Char *pChar;
for (FX_INT32 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;
FX_INT32 m_iStart;
FX_INT32 m_iWidth;
FX_INT32 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(FX_INT32 iScale);
virtual void SetVerticalScale(FX_INT32 iScale);
virtual void SetCharRotation(FX_INT32 iCharRotation);
virtual void SetCharSpace(FX_FLOAT fCharSpace);
virtual void SetAlignment(FX_INT32 iAlignment);
virtual FX_DWORD GetContextCharStyles() const;
virtual void SetContextCharStyles(FX_DWORD dwCharStyles);
virtual void SetCombWidth(FX_FLOAT fCombWidth);
virtual void SetUserData(FX_LPVOID pUserData);
virtual FX_DWORD AppendChar(FX_WCHAR wch);
virtual FX_DWORD EndBreak(FX_DWORD dwStatus = FX_TXTBREAK_PieceBreak);
virtual FX_INT32 CountBreakChars() const;
virtual FX_INT32 CountBreakPieces() const;
virtual const CFX_TxtPiece* GetBreakPiece(FX_INT32 index) const;
virtual void ClearBreakPieces();
virtual void Reset();
virtual FX_INT32 GetDisplayPos(FX_LPCTXTRUN pTxtRun, FXTEXT_CHARPOS *pCharPos, FX_BOOL bCharCode = FALSE, CFX_WideString *pWSForms = NULL, FX_AdjustCharDisplayPos pAdjustPos = NULL) const;
virtual FX_INT32 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, FX_INT32 iRotation);
FX_DWORD AppendChar_Tab(CFX_Char *pCurChar, FX_INT32 iRotation);
FX_DWORD AppendChar_Control(CFX_Char *pCurChar, FX_INT32 iRotation);
FX_DWORD AppendChar_Arabic(CFX_Char *pCurChar, FX_INT32 iRotation);
FX_DWORD AppendChar_Others(CFX_Char *pCurChar, FX_INT32 iRotation);
protected:
FX_DWORD m_dwPolicies;
FX_BOOL m_bPagination;
IFX_ArabicChar *m_pArabicChar;
FX_INT32 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;
FX_INT32 m_iArabicContext;
FX_INT32 m_iCurArabicContext;
IFX_Font *m_pFont;
FX_INT32 m_iFontSize;
FX_BOOL m_bEquidistant;
FX_INT32 m_iTabWidth;
FX_WCHAR m_wDefChar;
FX_WCHAR m_wParagBreakChar;
FX_INT32 m_iDefChar;
FX_INT32 m_iLineRotation;
FX_INT32 m_iCharRotation;
FX_INT32 m_iRotation;
FX_INT32 m_iAlignment;
FX_DWORD m_dwContextCharStyles;
FX_INT32 m_iCombWidth;
FX_LPVOID m_pUserData;
FX_DWORD m_dwCharType;
FX_BOOL m_bCurRTL;
FX_INT32 m_iCurAlignment;
FX_BOOL m_bArabicNumber;
FX_BOOL m_bArabicComma;
CFX_TxtLine *m_pTxtLine1;
CFX_TxtLine *m_pTxtLine2;
CFX_TxtLine *m_pCurLine;
FX_INT32 m_iReady;
FX_INT32 m_iTolerance;
FX_INT32 m_iHorScale;
FX_INT32 m_iVerScale;
FX_INT32 m_iCharSpace;
void SetBreakStatus();
FX_INT32 GetLineRotation(FX_DWORD dwStyles) const;
CFX_TxtChar* GetLastChar(FX_INT32 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);
FX_INT32 GetBreakPos(CFX_TxtCharArray &ca, FX_INT32 &iEndPos, FX_BOOL bAllChars = FALSE, FX_BOOL bOnlyBrk = FALSE);
void SplitTextLine(CFX_TxtLine *pCurLine, CFX_TxtLine *pNextLine, FX_BOOL bAllChars = FALSE);
};
#endif
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