// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_
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#define XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_
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#include "core/fxcrt/include/fx_ucd.h"
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#include "core/fxge/include/fx_ge.h"
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#include "xfa/fgas/crt/fgas_utils.h"
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#include "xfa/fgas/layout/fgas_unicode.h"
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class CFX_Char;
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class CFGAS_GEFont;
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class CFX_TxtChar;
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class CFX_TxtPiece;
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class IFX_TxtAccess;
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#define FX_TXTBREAKPOLICY_None 0x00
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#define FX_TXTBREAKPOLICY_Pagination 0x01
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#define FX_TXTBREAKPOLICY_SpaceBreak 0x02
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#define FX_TXTBREAKPOLICY_NumberBreak 0x04
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#define FX_TXTBREAK_None 0x00
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#define FX_TXTBREAK_PieceBreak 0x01
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#define FX_TXTBREAK_LineBreak 0x02
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#define FX_TXTBREAK_ParagraphBreak 0x03
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#define FX_TXTBREAK_PageBreak 0x04
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#define FX_TXTBREAK_ControlChar 0x10
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#define FX_TXTBREAK_BreakChar 0x20
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#define FX_TXTBREAK_UnknownChar 0x40
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#define FX_TXTBREAK_RemoveChar 0x80
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#define FX_TXTLAYOUTSTYLE_MutipleFormat 0x0001
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#define FX_TXTLAYOUTSTYLE_VerticalLayout 0x0002
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#define FX_TXTLAYOUTSTYLE_VerticalChars 0x0004
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#define FX_TXTLAYOUTSTYLE_ReverseLine 0x0008
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#define FX_TXTLAYOUTSTYLE_ArabicContext 0x0010
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#define FX_TXTLAYOUTSTYLE_ArabicShapes 0x0020
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#define FX_TXTLAYOUTSTYLE_RTLReadingOrder 0x0040
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#define FX_TXTLAYOUTSTYLE_ExpandTab 0x0100
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#define FX_TXTLAYOUTSTYLE_SingleLine 0x0200
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#define FX_TXTLAYOUTSTYLE_CombText 0x0400
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#define FX_TXTCHARSTYLE_Alignment 0x000F
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#define FX_TXTCHARSTYLE_ArabicNumber 0x0010
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#define FX_TXTCHARSTYLE_ArabicShadda 0x0020
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#define FX_TXTCHARSTYLE_OddBidiLevel 0x0040
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#define FX_TXTCHARSTYLE_RTLReadingOrder 0x0080
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#define FX_TXTCHARSTYLE_ArabicContext 0x0300
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#define FX_TXTCHARSTYLE_ArabicIndic 0x0400
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#define FX_TXTCHARSTYLE_ArabicComma 0x0800
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#define FX_TXTLINEALIGNMENT_Left 0
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#define FX_TXTLINEALIGNMENT_Center 1
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#define FX_TXTLINEALIGNMENT_Right 2
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#define FX_TXTLINEALIGNMENT_Justified (1 << 2)
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#define FX_TXTLINEALIGNMENT_Distributed (2 << 2)
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#define FX_TXTLINEALIGNMENT_JustifiedLeft \
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(FX_TXTLINEALIGNMENT_Left | FX_TXTLINEALIGNMENT_Justified)
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#define FX_TXTLINEALIGNMENT_JustifiedCenter \
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(FX_TXTLINEALIGNMENT_Center | FX_TXTLINEALIGNMENT_Justified)
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#define FX_TXTLINEALIGNMENT_JustifiedRight \
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(FX_TXTLINEALIGNMENT_Right | FX_TXTLINEALIGNMENT_Justified)
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#define FX_TXTLINEALIGNMENT_DistributedLeft \
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(FX_TXTLINEALIGNMENT_Left | FX_TXTLINEALIGNMENT_Distributed)
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#define FX_TXTLINEALIGNMENT_DistributedCenter \
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(FX_TXTLINEALIGNMENT_Center | FX_TXTLINEALIGNMENT_Distributed)
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#define FX_TXTLINEALIGNMENT_DistributedRight \
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(FX_TXTLINEALIGNMENT_Right | FX_TXTLINEALIGNMENT_Distributed)
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#define FX_TXTLINEALIGNMENT_LowerMask 0x03
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#define FX_TXTLINEALIGNMENT_HigherMask 0x0C
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#define FX_TXTBREAK_MinimumTabWidth 160000
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struct FDE_TEXTEDITPIECE;
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class IFX_TxtAccess {
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public:
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virtual ~IFX_TxtAccess() {}
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virtual FX_WCHAR GetChar(const FDE_TEXTEDITPIECE* pIdentity,
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int32_t index) const = 0;
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virtual int32_t GetWidth(const FDE_TEXTEDITPIECE* pIdentity,
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int32_t index) const = 0;
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};
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struct FX_TXTRUN {
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FX_TXTRUN();
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FX_TXTRUN(const FX_TXTRUN& other);
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~FX_TXTRUN();
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IFX_TxtAccess* pAccess;
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const FDE_TEXTEDITPIECE* pIdentity;
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CFX_WideString wsStr;
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int32_t* pWidths;
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int32_t iLength;
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CFGAS_GEFont* pFont;
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FX_FLOAT fFontSize;
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uint32_t dwStyles;
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int32_t iHorizontalScale;
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int32_t iVerticalScale;
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int32_t iCharRotation;
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uint32_t dwCharStyles;
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const CFX_RectF* pRect;
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FX_WCHAR wLineBreakChar;
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FX_BOOL bSkipSpace;
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};
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class CFX_TxtPiece : public CFX_Target {
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public:
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CFX_TxtPiece();
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int32_t GetEndPos() const {
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return m_iWidth < 0 ? m_iStartPos : m_iStartPos + m_iWidth;
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}
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int32_t GetLength() const { return m_iChars; }
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int32_t GetEndChar() const { return m_iStartChar + m_iChars; }
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CFX_TxtChar* GetCharPtr(int32_t index) const {
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ASSERT(index > -1 && index < m_iChars && m_pChars);
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return m_pChars->GetDataPtr(m_iStartChar + index);
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}
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void GetString(FX_WCHAR* pText) const {
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ASSERT(pText);
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int32_t iEndChar = m_iStartChar + m_iChars;
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CFX_Char* pChar;
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for (int32_t i = m_iStartChar; i < iEndChar; i++) {
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pChar = m_pChars->GetDataPtr(i);
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*pText++ = (FX_WCHAR)pChar->m_wCharCode;
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}
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}
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void GetString(CFX_WideString& wsText) const {
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FX_WCHAR* pText = wsText.GetBuffer(m_iChars);
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GetString(pText);
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wsText.ReleaseBuffer(m_iChars);
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}
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void GetWidths(int32_t* pWidths) const {
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ASSERT(pWidths);
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int32_t iEndChar = m_iStartChar + m_iChars;
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CFX_Char* pChar;
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for (int32_t i = m_iStartChar; i < iEndChar; i++) {
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pChar = m_pChars->GetDataPtr(i);
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*pWidths++ = pChar->m_iCharWidth;
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}
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}
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uint32_t m_dwStatus;
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int32_t m_iStartPos;
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int32_t m_iWidth;
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int32_t m_iStartChar;
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int32_t m_iChars;
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int32_t m_iBidiLevel;
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int32_t m_iBidiPos;
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int32_t m_iHorizontalScale;
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int32_t m_iVerticalScale;
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uint32_t m_dwCharStyles;
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CFX_TxtCharArray* m_pChars;
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void* m_pUserData;
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};
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typedef CFX_BaseArrayTemplate<CFX_TxtPiece> CFX_TxtPieceArray;
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class CFX_TxtLine {
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public:
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CFX_TxtLine(int32_t iBlockSize);
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~CFX_TxtLine();
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int32_t CountChars() const { return m_pLineChars->GetSize(); }
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CFX_TxtChar* GetCharPtr(int32_t index) const {
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ASSERT(index > -1 && index < m_pLineChars->GetSize());
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return m_pLineChars->GetDataPtr(index);
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}
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int32_t CountPieces() const { return m_pLinePieces->GetSize(); }
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CFX_TxtPiece* GetPiecePtr(int32_t index) const {
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ASSERT(index > -1 && index < m_pLinePieces->GetSize());
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return m_pLinePieces->GetPtrAt(index);
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}
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void GetString(CFX_WideString& wsStr) const {
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int32_t iCount = m_pLineChars->GetSize();
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FX_WCHAR* pBuf = wsStr.GetBuffer(iCount);
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CFX_Char* pChar;
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for (int32_t i = 0; i < iCount; i++) {
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pChar = m_pLineChars->GetDataPtr(i);
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*pBuf++ = (FX_WCHAR)pChar->m_wCharCode;
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}
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wsStr.ReleaseBuffer(iCount);
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}
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void RemoveAll(FX_BOOL bLeaveMemory = FALSE) {
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m_pLineChars->RemoveAll();
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m_pLinePieces->RemoveAll(bLeaveMemory);
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m_iWidth = 0;
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m_iArabicChars = 0;
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}
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CFX_TxtCharArray* m_pLineChars;
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CFX_TxtPieceArray* m_pLinePieces;
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int32_t m_iStart;
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int32_t m_iWidth;
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int32_t m_iArabicChars;
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};
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class CFX_TxtBreak {
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public:
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CFX_TxtBreak(uint32_t dwPolicies);
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~CFX_TxtBreak();
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void SetLineWidth(FX_FLOAT fLineWidth);
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void SetLinePos(FX_FLOAT fLinePos);
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uint32_t GetLayoutStyles() const { return m_dwLayoutStyles; }
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void SetLayoutStyles(uint32_t dwLayoutStyles);
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void SetFont(CFGAS_GEFont* pFont);
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void SetFontSize(FX_FLOAT fFontSize);
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void SetTabWidth(FX_FLOAT fTabWidth, FX_BOOL bEquidistant);
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void SetDefaultChar(FX_WCHAR wch);
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void SetParagraphBreakChar(FX_WCHAR wch);
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void SetLineBreakTolerance(FX_FLOAT fTolerance);
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void SetHorizontalScale(int32_t iScale);
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void SetVerticalScale(int32_t iScale);
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void SetCharRotation(int32_t iCharRotation);
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void SetCharSpace(FX_FLOAT fCharSpace);
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void SetAlignment(int32_t iAlignment);
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uint32_t GetContextCharStyles() const;
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void SetContextCharStyles(uint32_t dwCharStyles);
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void SetCombWidth(FX_FLOAT fCombWidth);
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void SetUserData(void* pUserData);
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uint32_t AppendChar(FX_WCHAR wch);
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uint32_t EndBreak(uint32_t dwStatus = FX_TXTBREAK_PieceBreak);
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int32_t CountBreakChars() const;
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int32_t CountBreakPieces() const;
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const CFX_TxtPiece* GetBreakPiece(int32_t index) const;
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void ClearBreakPieces();
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void Reset();
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int32_t GetDisplayPos(const FX_TXTRUN* pTxtRun,
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FXTEXT_CHARPOS* pCharPos,
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FX_BOOL bCharCode = FALSE,
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CFX_WideString* pWSForms = nullptr,
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FX_AdjustCharDisplayPos pAdjustPos = nullptr) const;
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int32_t GetCharRects(const FX_TXTRUN* pTxtRun,
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CFX_RectFArray& rtArray,
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FX_BOOL bCharBBox = FALSE) const;
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void AppendChar_PageLoad(CFX_TxtChar* pCurChar, uint32_t dwProps);
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uint32_t AppendChar_Combination(CFX_TxtChar* pCurChar, int32_t iRotation);
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uint32_t AppendChar_Tab(CFX_TxtChar* pCurChar, int32_t iRotation);
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uint32_t AppendChar_Control(CFX_TxtChar* pCurChar, int32_t iRotation);
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uint32_t AppendChar_Arabic(CFX_TxtChar* pCurChar, int32_t iRotation);
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uint32_t AppendChar_Others(CFX_TxtChar* pCurChar, int32_t iRotation);
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private:
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void SetBreakStatus();
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int32_t GetLineRotation(uint32_t dwStyles) const;
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CFX_TxtChar* GetLastChar(int32_t index, FX_BOOL bOmitChar = TRUE) const;
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CFX_TxtLine* GetTxtLine(FX_BOOL bReady) const;
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CFX_TxtPieceArray* GetTxtPieces(FX_BOOL bReady) const;
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FX_CHARTYPE GetUnifiedCharType(FX_CHARTYPE dwType) const;
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void ResetArabicContext();
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void ResetContextCharStyles();
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void EndBreak_UpdateArabicShapes();
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FX_BOOL EndBreak_SplitLine(CFX_TxtLine* pNextLine,
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FX_BOOL bAllChars,
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uint32_t dwStatus);
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void EndBreak_BidiLine(CFX_TPOArray& tpos, uint32_t dwStatus);
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void EndBreak_Alignment(CFX_TPOArray& tpos,
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FX_BOOL bAllChars,
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uint32_t dwStatus);
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int32_t GetBreakPos(CFX_TxtCharArray& ca,
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int32_t& iEndPos,
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FX_BOOL bAllChars = FALSE,
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FX_BOOL bOnlyBrk = FALSE);
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void SplitTextLine(CFX_TxtLine* pCurLine,
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CFX_TxtLine* pNextLine,
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FX_BOOL bAllChars = FALSE);
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uint32_t m_dwPolicies;
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FX_BOOL m_bPagination;
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int32_t m_iLineWidth;
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uint32_t m_dwLayoutStyles;
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FX_BOOL m_bVertical;
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FX_BOOL m_bArabicContext;
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FX_BOOL m_bArabicShapes;
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FX_BOOL m_bRTL;
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FX_BOOL m_bSingleLine;
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FX_BOOL m_bCombText;
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int32_t m_iArabicContext;
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int32_t m_iCurArabicContext;
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CFGAS_GEFont* m_pFont;
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int32_t m_iFontSize;
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FX_BOOL m_bEquidistant;
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int32_t m_iTabWidth;
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FX_WCHAR m_wDefChar;
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FX_WCHAR m_wParagBreakChar;
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int32_t m_iDefChar;
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int32_t m_iLineRotation;
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int32_t m_iCharRotation;
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int32_t m_iRotation;
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int32_t m_iAlignment;
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uint32_t m_dwContextCharStyles;
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int32_t m_iCombWidth;
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void* m_pUserData;
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FX_CHARTYPE m_eCharType;
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FX_BOOL m_bCurRTL;
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int32_t m_iCurAlignment;
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FX_BOOL m_bArabicNumber;
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FX_BOOL m_bArabicComma;
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CFX_TxtLine* m_pTxtLine1;
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CFX_TxtLine* m_pTxtLine2;
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CFX_TxtLine* m_pCurLine;
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int32_t m_iReady;
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int32_t m_iTolerance;
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int32_t m_iHorScale;
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int32_t m_iVerScale;
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int32_t m_iCharSpace;
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};
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#endif // XFA_FGAS_LAYOUT_FGAS_TEXTBREAK_H_
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