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Diffstat (limited to 'xfa/src/fgas/layout/fgas_textbreak.h')
| -rw-r--r-- | xfa/src/fgas/layout/fgas_textbreak.h | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/xfa/src/fgas/layout/fgas_textbreak.h b/xfa/src/fgas/layout/fgas_textbreak.h new file mode 100644 index 0000000000..65fba720d5 --- /dev/null +++ b/xfa/src/fgas/layout/fgas_textbreak.h @@ -0,0 +1,222 @@ +// 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_LAYOUT_FGAS_TEXTBREAK_H_ +#define XFA_SRC_FGAS_LAYOUT_FGAS_TEXTBREAK_H_ + +#include "core/include/fxcrt/fx_ucd.h" +#include "core/include/fxge/fx_ge.h" +#include "xfa/src/fgas/crt/fgas_utils.h" +#include "xfa/src/fgas/layout/fgas_unicode.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; +}; + +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; + const CFX_RectF* pRect; + FX_WCHAR wLineBreakChar; + FX_BOOL bSkipSpace; +}; + +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( + const FX_TXTRUN* pTxtRun, + FXTEXT_CHARPOS* pCharPos, + FX_BOOL bCharCode = FALSE, + CFX_WideString* pWSForms = NULL, + FX_AdjustCharDisplayPos pAdjustPos = NULL) const = 0; + virtual int32_t GetCharRects(const FX_TXTRUN* pTxtRun, + CFX_RectFArray& rtArray, + FX_BOOL bCharBBox = FALSE) const = 0; +}; + +#endif // XFA_SRC_FGAS_LAYOUT_FGAS_TEXTBREAK_H_ |