// 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 |