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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_FGAS_LAYOUT_FGAS_RTFBREAK_H_
#define XFA_FGAS_LAYOUT_FGAS_RTFBREAK_H_
#include <deque>
#include <vector>
#include "core/fxcrt/cfx_retain_ptr.h"
#include "core/fxcrt/fx_basic.h"
#include "core/fxcrt/fx_ucd.h"
#include "xfa/fgas/crt/fgas_utils.h"
#include "xfa/fgas/layout/fgas_textbreak.h"
class CFGAS_GEFont;
#define FX_RTFLAYOUTSTYLE_Pagination 0x01
#define FX_RTFLAYOUTSTYLE_ExpandTab 0x10
enum class CFX_RTFLineAlignment {
Left = 0,
Center,
Right,
Justified,
Distributed
};
struct FX_RTFTEXTOBJ {
FX_RTFTEXTOBJ();
~FX_RTFTEXTOBJ();
CFX_WideString pStr;
std::vector<int32_t> pWidths;
CFX_RetainPtr<CFGAS_GEFont> pFont;
const CFX_RectF* pRect;
FX_WCHAR wLineBreakChar;
FX_FLOAT fFontSize;
int32_t iLength;
int32_t iBidiLevel;
int32_t iHorizontalScale;
int32_t iVerticalScale;
};
class CFX_RTFPiece {
public:
CFX_RTFPiece();
CFX_RTFPiece(const CFX_RTFPiece& other);
~CFX_RTFPiece();
int32_t GetEndPos() const {
return m_iWidth < 0 ? m_iStartPos : m_iStartPos + m_iWidth;
}
CFX_RTFChar& GetChar(int32_t index) {
ASSERT(index > -1 && index < m_iChars && m_pChars);
return (*m_pChars)[m_iStartChar + index];
}
CFX_WideString GetString() const {
CFX_WideString ret;
ret.Reserve(m_iChars);
for (int32_t i = m_iStartChar; i < m_iStartChar + m_iChars; i++)
ret += static_cast<FX_WCHAR>((*m_pChars)[i].m_wCharCode);
return ret;
}
std::vector<int32_t> GetWidths() const {
std::vector<int32_t> ret;
ret.reserve(m_iChars);
for (int32_t i = m_iStartChar; i < m_iStartChar + m_iChars; i++)
ret.push_back((*m_pChars)[i].m_iCharWidth);
return ret;
}
CFX_BreakType 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_iFontSize;
int32_t m_iFontHeight;
int32_t m_iHorizontalScale;
int32_t m_iVerticalScale;
uint32_t m_dwIdentity;
std::vector<CFX_RTFChar>* m_pChars; // not owned.
CFX_RetainPtr<CFX_Retainable> m_pUserData;
};
class CFX_RTFLine {
public:
CFX_RTFLine();
~CFX_RTFLine();
int32_t CountChars() const {
return pdfium::CollectionSize<int32_t>(m_LineChars);
}
CFX_RTFChar& GetChar(int32_t index) {
ASSERT(index >= 0 && index < pdfium::CollectionSize<int32_t>(m_LineChars));
return m_LineChars[index];
}
int32_t GetLineEnd() const { return m_iStart + m_iWidth; }
void Clear() {
m_LineChars.clear();
m_LinePieces.clear();
m_iWidth = 0;
m_iArabicChars = 0;
}
std::vector<CFX_RTFChar> m_LineChars;
std::vector<CFX_RTFPiece> m_LinePieces;
int32_t m_iStart;
int32_t m_iWidth;
int32_t m_iArabicChars;
};
class CFX_RTFBreak {
public:
explicit CFX_RTFBreak(uint32_t dwLayoutStyles);
~CFX_RTFBreak();
void SetLineBoundary(FX_FLOAT fLineStart, FX_FLOAT fLineEnd);
void SetLineStartPos(FX_FLOAT fLinePos);
void SetFont(const CFX_RetainPtr<CFGAS_GEFont>& pFont);
void SetFontSize(FX_FLOAT fFontSize);
void SetTabWidth(FX_FLOAT fTabWidth);
void SetLineBreakTolerance(FX_FLOAT fTolerance);
void SetHorizontalScale(int32_t iScale);
void SetVerticalScale(int32_t iScale);
void SetCharSpace(FX_FLOAT fCharSpace);
void SetAlignment(CFX_RTFLineAlignment align) { m_iAlignment = align; }
void SetUserData(const CFX_RetainPtr<CFX_Retainable>& pUserData);
void AddPositionedTab(FX_FLOAT fTabPos);
CFX_BreakType EndBreak(CFX_BreakType dwStatus);
int32_t CountBreakPieces() const;
const CFX_RTFPiece* GetBreakPieceUnstable(int32_t index) const;
void ClearBreakPieces();
void Reset();
int32_t GetDisplayPos(const FX_RTFTEXTOBJ* pText,
FXTEXT_CHARPOS* pCharPos,
bool bCharCode) const;
CFX_BreakType AppendChar(FX_WCHAR wch);
CFX_RTFLine* GetCurrentLineForTesting() const { return m_pCurLine; }
private:
void AppendChar_Combination(CFX_RTFChar* pCurChar);
void AppendChar_Tab(CFX_RTFChar* pCurChar);
CFX_BreakType AppendChar_Control(CFX_RTFChar* pCurChar);
CFX_BreakType AppendChar_Arabic(CFX_RTFChar* pCurChar);
CFX_BreakType AppendChar_Others(CFX_RTFChar* pCurChar);
void FontChanged();
void SetBreakStatus();
CFX_RTFChar* GetLastChar(int32_t index) const;
bool HasRTFLine() const { return m_iReadyLineIndex >= 0; }
FX_CHARTYPE GetUnifiedCharType(FX_CHARTYPE chartype) const;
int32_t GetLastPositionedTab() const;
bool GetPositionedTab(int32_t* iTabPos) const;
int32_t GetBreakPos(std::vector<CFX_RTFChar>& tca,
int32_t& iEndPos,
bool bAllChars,
bool bOnlyBrk);
void SplitTextLine(CFX_RTFLine* pCurLine,
CFX_RTFLine* pNextLine,
bool bAllChars);
bool EndBreak_SplitLine(CFX_RTFLine* pNextLine,
bool bAllChars,
CFX_BreakType dwStatus);
void EndBreak_BidiLine(std::deque<FX_TPO>* tpos, CFX_BreakType dwStatus);
void EndBreak_Alignment(const std::deque<FX_TPO>& tpos,
bool bAllChars,
CFX_BreakType dwStatus);
int32_t m_iBoundaryStart;
int32_t m_iBoundaryEnd;
uint32_t m_dwLayoutStyles;
bool m_bPagination;
CFX_RetainPtr<CFGAS_GEFont> m_pFont;
int32_t m_iFontHeight;
int32_t m_iFontSize;
int32_t m_iTabWidth;
std::vector<int32_t> m_PositionedTabs;
FX_WCHAR m_wDefChar;
int32_t m_iDefChar;
FX_WCHAR m_wLineBreakChar;
int32_t m_iHorizontalScale;
int32_t m_iVerticalScale;
int32_t m_iCharSpace;
CFX_RTFLineAlignment m_iAlignment;
CFX_RetainPtr<CFX_Retainable> m_pUserData;
FX_CHARTYPE m_eCharType;
uint32_t m_dwIdentity;
CFX_RTFLine m_RTFLine[2];
CFX_RTFLine* m_pCurLine;
int32_t m_iTolerance;
int8_t m_iReadyLineIndex;
};
#endif // XFA_FGAS_LAYOUT_FGAS_RTFBREAK_H_
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