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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
#define _FX_TEXTBREAK
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 FX_WCHAR GetChar(FX_LPVOID pIdentity, int32_t index) const = 0;
virtual int32_t GetWidth(FX_LPVOID 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;
FX_LPVOID pIdentity;
FX_LPCWSTR 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_LPWSTR 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_LPWSTR 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;
FX_LPVOID m_pUserData;
};
typedef CFX_BaseArrayTemplate<CFX_TxtPiece> CFX_TxtPieceArray;
class IFX_TxtBreak
{
public:
static IFX_TxtBreak* Create(FX_DWORD dwPolicies);
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(FX_LPVOID 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
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