303 lines
9.7 KiB
C
303 lines
9.7 KiB
C
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/*
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* _SELECT.H
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*
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* Purpose:
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* CTxtSelection class
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*
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* Owner:
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* David R. Fulmer (original code)
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* Christian Fortini
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*
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* Copyright (c) 1995-2000, Microsoft Corporation. All rights reserved.
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*/
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#ifndef _SELECT_H
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#define _SELECT_H
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#include "_range.h"
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#include "_m_undo.h"
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// amount of time, in milisecs, before pending characters force a display update
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#define ticksPendingUpdate 100 // 100 mili secs ~ display at least 10 characters per second.
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class CDisplay;
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class CLinePtr;
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typedef enum
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{
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smNone,
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smWord,
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smLine,
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smPara
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} SELMODE;
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enum
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{
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CARET_NONE = 0,
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CARET_CUSTOM = 1,
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CARET_BIDI = 2,
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CARET_THAI = 4,
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CARET_INDIC = 8
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};
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class CTxtSelection : public CTxtRange
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{
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#ifdef DEBUG
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public:
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BOOL Invariant( void ) const; // Invariant checking.
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#endif // DEBUG
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//@access Protected Data
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protected:
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CDisplay *_pdp; // display this selection belong to
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LONG _cpSel; // active end of displayed selection
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LONG _cchSel; // length of displayed selection
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LONG _upCaret; // caret x on screen
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LONG _vpCaret; // caret y on screen
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LONG _upCaretReally; // real caret x (/r start of line) for vertical moves
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INT _dvpCaret; // caret height
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union
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{
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DWORD _dwFlags; // All together now
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struct
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{
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DWORD _fCaretNotAtBOL:1; // If at BOL, show caret at prev EOL
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DWORD _fDeferUpdate :1; // Defer updating selection/caret on screen
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DWORD _fInAutoWordSel:1; // Current selection used auto word sel
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DWORD _fShowCaret :1; // Show caret on screen
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DWORD _fShowSelection:1; // Show selection on screen
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DWORD _fIsChar :1; // Currently adding a single char
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DWORD _fObSelected :1; // An embedded object is selected
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DWORD _fAutoSelectAborted : 1; // Whether auto word selection is aborted
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DWORD _fCaretCreated :1; // Caret has been created
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DWORD _fNoKeyboardUpdate :1; // Keyboard is not updated while in UpdateCaret()
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DWORD _fEOP :1; // InsertEOP() has been called
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DWORD _fHomeOrEnd :1; // Home or End key is being processed
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DWORD _fAutoVScroll :1; // 1.0 specific: flag indicating autoscrolling should be applied
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DWORD _fForceScrollCaret:1; // 1.0 specific: force caret to scroll
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DWORD _fShowCellLine :1; // Show line for CELL following TRED
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DWORD _fUpdatedFromCp0:1;// Updated selection from cp = 0
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};
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};
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SELMODE _SelMode; // 0 none, 1 Word, 2 Line, 3 Paragraph
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DWORD _ticksPending; // Count of chars inserted without UpdateWindow
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LONG _cpAnchor; // Initial anchor for auto word select
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LONG _cpAnchorMin; // Initial selection cpMin/cpMost for select
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LONG _cpAnchorMost; // modes
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LONG _cpWordMin; // Start of anchor word in word select mode
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LONG _cpWordMost; // End of anchor word in word select mode
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LONG _cpWordPrev; // Previous anchor word end
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HBITMAP _hbmpCaret; // Used for funky carets, like BiDi/ital carets
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DWORD _dwCaretInfo; // Current caret info used to avoid new create
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//@access Public Methods
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public:
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CTxtSelection(CDisplay * const pdp);
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~CTxtSelection();
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CRchTxtPtr& operator =(const CRchTxtPtr& rtp);
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CTxtRange& operator =(const CTxtRange &rg);
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// Set the display
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void SetDisplay(CDisplay *pdp) { _pdp = pdp; }
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// Information for Selection Change notification
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void SetSelectionInfo(SELCHANGE *pselchg);
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// Replacement
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LONG DeleteWithTRDCheck(IUndoBuilder *publdr, SELRR selaemode,
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LONG *pcchMove, DWORD dwflags);
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LONG ReplaceRange(LONG cchNew, WCHAR const *pch,
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IUndoBuilder *publdr, SELRR fCreateAE, LONG* pcchMove = NULL,
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DWORD dwFlags = 0);
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// Info for recalc line / UpdateView
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void ClearCchPending() {_ticksPending = 0;}
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LONG GetScrSelMin() const {return min(_cpSel, _cpSel - _cchSel);}
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LONG GetScrSelMost() const {return max(_cpSel, _cpSel - _cchSel);}
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BOOL PuttingChar() const {return _fIsChar;}
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// General updating
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virtual BOOL Update(BOOL fScrollIntoView);
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BOOL DeferUpdate()
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{const BOOL fRet = _fDeferUpdate; _fDeferUpdate = TRUE; return fRet;}
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BOOL DoDeferedUpdate(BOOL fScrollIntoView)
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{_fDeferUpdate = FALSE; return Update(fScrollIntoView);}
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void SetAutoVScroll(BOOL bAuto) {_fAutoVScroll = bAuto;}
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BOOL GetAutoVScroll() {return _fAutoVScroll;}
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BOOL GetShowCellLine() {return _fShowCellLine;}
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void SetForceScrollCaret(BOOL bAuto) {_fForceScrollCaret = bAuto;}
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BOOL GetForceScrollCaret() {return _fForceScrollCaret;}
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// method used by selection anti-event for out-of-phase updates
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void SetDelayedSelectionRange(LONG cp, LONG cch);
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void StopGroupTyping();
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// Caret management
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BOOL CaretNotAtBOL() const;
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void CheckTableIP(BOOL fOpenLine);
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void CreateCaret();
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void DeleteCaretBitmap(BOOL fReset);
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BOOL IsCaretHorizontal() const;
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INT GetCaretHt() {return _dvpCaret;}
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LONG GetUpCaretReally();
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LONG GetUpCaret() const {return _upCaret;}
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LONG GetVpCaret() const {return _vpCaret;}
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BOOL IsCaretNotAtBOL() const {return _fCaretNotAtBOL;}
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BOOL IsCaretInView() const;
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BOOL IsCaretShown() const {return _fShowCaret && !_cch;}
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BOOL IsUpdatedFromCp0() const {return _fUpdatedFromCp0;}
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LONG LineLength(LONG *pcp) const;
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BOOL SetUpPosition(LONG upCaret, CLinePtr& rp, BOOL fBottomLine, BOOL fExtend);
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BOOL ShowCaret(BOOL fShow);
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BOOL UpdateCaret(BOOL fScrollIntoView, BOOL fForceCaret = FALSE);
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BOOL GetCaretPoint(RECTUV &rcClient, POINTUV &pt, CLinePtr *prp, BOOL fBeforeCp);
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BOOL MatchKeyboardToPara();
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// Selection management
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void ClearPrevSel() { _cpSel = 0; _cchSel = 0; }
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BOOL GetShowSelection() {return _fShowSelection;}
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BOOL ScrollWindowful(WPARAM wparam, BOOL fExtend);
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void SetSelection(LONG cpFirst, LONG cpMost);
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BOOL ShowSelection(BOOL fShow);
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void Beep() {GetPed()->Beep();}
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// Selection with the mouse
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void CancelModes (BOOL fAutoWordSel = FALSE);
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void ExtendSelection(const POINTUV pt);
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BOOL PointInSel (const POINTUV pt, RECTUV *prcClient = NULL, HITTEST Hit = HT_Undefined) const;
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void SelectAll ();
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void SelectUnit (const POINTUV pt, LONG Unit);
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void SelectWord (const POINTUV pt);
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void SetCaret (const POINTUV pt, BOOL fUpdate = TRUE);
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// Keyboard movements
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BOOL Left (BOOL fCtrl, BOOL fExtend);
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BOOL Right (BOOL fCtrl, BOOL fExtend);
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BOOL Up (BOOL fCtrl, BOOL fExtend);
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BOOL Down (BOOL fCtrl, BOOL fExtend);
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BOOL Home (BOOL fCtrl, BOOL fExtend);
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BOOL End (BOOL fCtrl, BOOL fExtend);
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BOOL PageUp (BOOL fCtrl, BOOL fExtend);
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BOOL PageDown(BOOL fCtrl, BOOL fExtend);
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// Editing
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BOOL PutChar (DWORD ch, DWORD dwFlags, IUndoBuilder *publdr, LCID lcid = 0);
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void SetIsChar(BOOL);
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void CheckUpdateWindow();
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BOOL InsertEOP(IUndoBuilder *publdr, WCHAR ch = 0);
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LONG InsertTableRow (const CParaFormat *pPF, IUndoBuilder *publdr,
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BOOL fFixCellBorders = FALSE);
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// Keyboard switching support.
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void CheckChangeKeyboardLayout();
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bool CheckChangeFont (const HKL hkl, UINT iCharRep, LONG iSelFormat = 0, QWORD qwCharFlags = 0);
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UINT CheckSynchCharSet(QWORD dwCharFlags = 0);
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// from CTxtRange
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BOOL Delete (DWORD flags, IUndoBuilder *publdr);
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BOOL Backspace(BOOL fCtrl, IUndoBuilder *publdr);
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const CParaFormat* GetPF();
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// note that the parameters are different than CTxtRange::SetCharFormat
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// intentionally; the selection has extra options available to it.
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HRESULT SetCharFormat(const CCharFormat *pCF, DWORD flags,
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IUndoBuilder *publdr, DWORD dwMask, DWORD dwMask2);
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HRESULT SetParaFormat(const CParaFormat *pPF,
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IUndoBuilder *publdr, DWORD dwMask, DWORD dwMask2);
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// Auto word selection helper
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void InitClickForAutWordSel(const POINTUV pt);
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// dual font helper for CTxtSelection::PutChar
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void SetupDualFont();
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// IUnknown and IDispatch methods handled by CTxtRange methods
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// ITextRange methods can use ITextRange methods directly, since
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// they either don't modify the display of the selection (get methods), or
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// they have appropriate virtual character to call on selection functions.
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// ITextSelection methods
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STDMETHODIMP GetFlags (long *pFlags) ;
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STDMETHODIMP SetFlags (long Flags) ;
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STDMETHODIMP GetType (long *pType) ;
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STDMETHODIMP MoveLeft (long pUnit, long Count, long Extend,
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long *pDelta) ;
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STDMETHODIMP MoveRight(long pUnit, long Count, long Extend,
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long *pDelta) ;
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STDMETHODIMP MoveUp (long pUnit, long Count, long Extend,
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long *pDelta) ;
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STDMETHODIMP MoveDown (long pUnit, long Count, long Extend,
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long *pDelta) ;
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STDMETHODIMP HomeKey (long pUnit, long Extend, long *pDelta) ;
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STDMETHODIMP EndKey (long pUnit, long Extend, long *pDelta) ;
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STDMETHODIMP TypeText (BSTR bstr) ;
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STDMETHODIMP SetPoint (long x, long y, long Extend) ;
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//@access Protected Methods
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protected:
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// Protected update method
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void UpdateSelection();
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// Protected caret management method
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INT GetCaretHeight(INT *pyDescent) const;
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HRESULT GeoMover (long Unit, long Count, long Extend,
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long *pDelta, LONG iDir);
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HRESULT Homer (long Unit, long Extend, long *pDelta,
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BOOL (CTxtSelection::*pfn)(BOOL, BOOL));
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// Auto Select Word Helpers
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void UpdateForAutoWord();
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void AutoSelGoBackWord(
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LONG *pcpToUpdate,
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int iDirToPrevWord,
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int iDirToNextWord);
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void ExtendToWordBreak(BOOL fAfterEOP, INT iDir);
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BOOL CheckPlainTextFinalEOP();
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};
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/*
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* CSelPhaseAdjuster
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*
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* @class This class is put on the stack and used to temporarily hold
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* selection cp values until the control is "stable" (and thus,
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* we can safely set the selection
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*/
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class CSelPhaseAdjuster : public IReEntrantComponent
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{
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//@access Public methods
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public:
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// IReEntrantComponent methods
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virtual void OnEnterContext() {;} //@cmember re-entered notify
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CSelPhaseAdjuster(CTxtEdit *ped); //@cmember constructor
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~CSelPhaseAdjuster(); //@cmember destructor
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void CacheRange(LONG cp, LONG cch); //@cmember stores the sel range
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//@access Private data
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private:
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CTxtEdit * _ped; //@cmember edit context
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LONG _cp; //@cmember sel active end to set
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LONG _cch; //@cmember sel extension
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};
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#endif
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