159 lines
4.4 KiB
C++
159 lines
4.4 KiB
C++
/*
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* _RTEXT.H
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*
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* Purpose:
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* Base classes for rich-text manipulation
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*
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* Authors:
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* Original RichEdit code: David R. Fulmer
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* Christian Fortini
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* Murray Sargent
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*
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*/
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#ifndef _RTEXT_H
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#define _RTEXT_H
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#include "_edit.h"
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#include "_array.h"
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#include "_doc.h"
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#include "_text.h"
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#include "_runptr.h"
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#include "_frunptr.h"
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#include "_notmgr.h"
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//#pragma warning(disable: 4250)
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#define yHeightCharMost 32760
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class CTxtEdit;
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class CTxtRange;
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class CRchTxtPtr;
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// ReplaceRange's flags
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enum
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{
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RR_ITMZ_NOUNICODEBIDI = 0,
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RR_ITMZ_UNICODEBIDI = 1,
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RR_ITMZ_NONE = 2,
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//the following bits should be exclusive
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RR_NO_EOR_CHECK = 8 //flag indicating not to perform end-of-row check,
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};
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extern BOOL IsWhiteSpace(unsigned ch);
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// ============================== CRchTxtPtr =====================================================
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// Keeps physical positions corresponding to text character position (cp)
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// within current text block, formatting runs, objects, unknown RTF runs,
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// and floating ranges.
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class CRchTxtPtr : public ITxNotify
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{
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public:
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#ifdef DEBUG
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BOOL Invariant( void ) const;
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int m_InvariantCheckInterval;
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#endif // DEBUG
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CTxtPtr _rpTX; // rp in the plain text array
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CFormatRunPtr _rpCF; // rp in character format runs
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CFormatRunPtr _rpPF; // rp in paragraph format runs
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// Useful constructors
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CRchTxtPtr(CTxtEdit *ped);
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CRchTxtPtr(CTxtEdit *ped, LONG cp);
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CRchTxtPtr(const CRchTxtPtr& rtp);
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CRchTxtPtr(const CDisplay * pdp);
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virtual CRchTxtPtr& operator =(const CRchTxtPtr& rtp)
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{
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_rpTX._ped = rtp._rpTX._ped;
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SetCp(rtp.GetCp());
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return *this;
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}
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LONG Advance(LONG cch);
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LONG AdvanceCRLF();
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LONG BackupCRLF(BOOL fDiacriticCheck = TRUE);
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LONG SnapToCluster(INT iDirection = 0);
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LONG SetCp( LONG cp);
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void BindToCp(LONG cp);
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void CheckFormatRuns();
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LONG GetCp() const { return _rpTX.GetCp(); }
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LONG GetTextLength() const { return _rpTX.GetTextLength(); }
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LONG GetObjectCount() const { return GetPed()->GetObjectCount(); }
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CTxtEdit *GetPed() const { return _rpTX._ped; }
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const TCHAR * GetPch(LONG &cchvalid) { return _rpTX.GetPch(cchvalid); }
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TCHAR GetChar() { return _rpTX.GetChar(); }
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TCHAR GetPrevChar() { return _rpTX.GetPrevChar(); }
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void ValidateCp(LONG &cp) const;
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LONG GetParaNumber() const;
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LONG GetCachFromCch(LONG cch);
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LONG GetCchFromCach(LONG cach);
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// Text manipulation methods
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// Range operations
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LONG ReplaceRange(LONG cchOld, LONG cchNew, TCHAR const *pch,
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IUndoBuilder *publdr, LONG iFormat,
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LONG *pcchMove = NULL, DWORD dwFlags = 0);
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BOOL ItemizeReplaceRange(LONG cchUpdate, LONG cchMove,
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IUndoBuilder *publdr, BOOL fUnicodeBidi = FALSE);
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BOOL ChangeCase(LONG cch, LONG Type, IUndoBuilder *publdr);
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LONG UnitCounter (LONG iUnit, LONG & cUnit, LONG cchMax);
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void ExtendFormattingCRLF();
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LONG ExpandRangeFormatting(LONG cchRange, LONG cchMove, LONG& cchAdvance);
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// Search and word-break support
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LONG FindText(LONG cpMax, DWORD dwFlags, TCHAR const *pch,
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LONG cchToFind);
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LONG FindWordBreak(INT action, LONG cpMost = -1);
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// Text-run management
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LONG GetIchRunCF();
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LONG GetIchRunPF();
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LONG GetCchRunCF();
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LONG GetCchLeftRunCF();
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LONG GetCchLeftRunPF();
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// Character & paragraph format retrieval
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const CCharFormat* GetCF() const;
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const CParaFormat* GetPF() const;
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BOOL IsCollapsed() const {return (GetPF()->_wEffects & PFE_COLLAPSED) != 0;}
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BOOL IsHidden() const {return (GetCF()->_dwEffects & CFE_HIDDEN) != 0;}
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BOOL InTable() const {return (GetPF()->_wEffects & PFE_TABLE) != 0;}
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BOOL IsParaRTL() const {return (GetPF()->_wEffects & PFE_RTLPARA) != 0;}
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// ITxNotify methods
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virtual void OnPreReplaceRange( LONG cp, LONG cchDel, LONG cchNew,
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LONG cpFormatMin, LONG cpFormatMax) { ; }
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virtual void OnPostReplaceRange( LONG cp, LONG cchDel, LONG cchNew,
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LONG cpFormatMin, LONG cpFormatMax) { ; }
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virtual void Zombie();
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BOOL Check_rpCF();
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BOOL Check_rpPF();
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protected:
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BOOL AdvanceRunPtrs(LONG cp);
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void InitRunPtrs();
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BOOL IsRich();
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bool fUseUIFont() const {return GetPed()->fUseUIFont();}
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BOOL IsInOutlineView() const {return GetPed()->IsInOutlineView();}
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void SetRunPtrs(LONG cp, LONG cpFrom);
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private:
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LONG ReplaceRangeFormatting(LONG cchOld, LONG cchNew, LONG iFormat,
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IUndoBuilder *publdr,
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IAntiEvent **ppaeCF, IAntiEvent **ppaePF,
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LONG cchMove, LONG cchPrevEOP, LONG cchNextEOP,
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LONG cchSaveBefore = 0, LONG cchSaveAfter = 0);
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};
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#endif
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