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/*
* @doc INTERNAL * * @module _ime.h -- support for IME APIs | * * Purpose: * Most everything to do with FE composition string editing passes * through here. * * Authors: <nl> * Jon Matousek <nl> * Justin Voskuhl <nl> * Hon Wah Chan <nl> * * History: <nl> * 10/18/1995 jonmat Cleaned up level 2 code and converted it into * a class hierarchy supporting level 3. * * Copyright (c) 1995-1996 Microsoft Corporation. All rights reserved. * */
#ifndef _IME_H
#define _IME_H
class CTextMsgFilter;
// defines for IME Level 2 and 3
#define IME_LEVEL_2 2
#define IME_LEVEL_3 3
#define IME_PROTECTED 4
/*
* IME * * @class base class for IME support. * * @devnote * For level 2, at caret IMEs, the IME will draw a window directly over the text giving the * impression that the text is being processed by the application--this is called pseudo inline. * All UI is handled by the IME. This mode is currenlty bypassed in favor of level 3 true inline (TI); * however, it would be trivial to allow a user preference to select this mode. Some IMEs may have * a "special" UI, in which case level 3 TI is *NOT* used, necessitating level 2. * * For level 2, near caret IMEs, the IME will draw a very small and obvious window near the current * caret position in the document. This currently occurs for PRC(?) and Taiwan. * All UI is handled by the IME. * * For level 3, at caret IMEs, the composition string is drawn by the application, which is called * true inline, bypassing the level 2 "composition window". * Currently, we allow the IME to support all remaining UI *except* drawing of the composition string. */class CIme{ friend LRESULT OnGetIMECompositionMode ( CTextMsgFilter &TextMsgFilter ); friend HRESULT CompositionStringGlue ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); friend HRESULT EndCompositionGlue ( CTextMsgFilter &TextMsgFilter, BOOL fForceDelete); friend void CheckDestroyIME ( CTextMsgFilter &TextMsgFilter );
//@access Protected data
protected: short _imeLevel; //@cmember IME Level 2 or 3
short _cIgnoreIMECharMsg; //@cmember Level 2 IME use to eat WM_IME_CHAR message
short _fIgnoreEndComposition; //@cmember ignore the next End Composition message
short _fIMETerminated; //@cmember indicate this IME has been terminated
short _fSkipFirstOvertype; //@cmember skip first overtype if selection is
// deleted on StartComposition
//@access Public methods
public: virtual ~CIme() {};
INT _compMessageRefCount; //@cmember so as not to delete if recursed.
short _fDestroy; //@cmember set when object wishes to be deleted.
//@cmember Handle WM_IME_STARTCOMPOSITION
virtual HRESULT StartComposition ( CTextMsgFilter &TextMsgFilter ) = 0; //@cmember Handle WM_IME_COMPOSITION and WM_IME_ENDCOMPOSITION
virtual HRESULT CompositionString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ) = 0; //@cmember Handle post WM_IME_CHAR to update comp window.
virtual void PostIMEChar( CTextMsgFilter &TextMsgFilter ) = 0;
//@cmember Handle WM_IME_NOTIFY
virtual HRESULT IMENotify (const WPARAM wparam, const LPARAM lparam, CTextMsgFilter &TextMsgFilter, BOOL fCCompWindow ) = 0;
virtual BOOL IMEMouseOperation ( CTextMsgFilter &TextMsgFilter, UINT msg ) = 0;
enum TerminateMode { TERMINATE_NORMAL = 1, TERMINATE_FORCECANCEL = 2 };
void TerminateIMEComposition(CTextMsgFilter &TextMsgFilter, CIme::TerminateMode mode); //@cmember Terminate current IME composition session.
//@cmember check if we need to ignore WM_IME_CHAR messages
BOOL IgnoreIMECharMsg() { return _cIgnoreIMECharMsg > 0; } //@cmember skip WM_IME_CHAR message
void SkipIMECharMsg() { _cIgnoreIMECharMsg--; } //@cmember accept WM_IME_CHAR message
void AcceptIMECharMsg() { _cIgnoreIMECharMsg = 0; }
static void CheckKeyboardFontMatching ( long cp, CTextMsgFilter &TextMsgFilter, ITextFont *pTextFont ); //@cmember Check current font/keyboard matching.
BOOL IsTerminated () //@cmember Return _fIMETerminated
{ return _fIMETerminated; }
INT GetIMELevel () //@cmember Return the current IME level.
{ return _imeLevel; }
//@access Protected methods
protected: //@cmember Get composition string, convert to unicode.
static INT GetCompositionStringInfo( HIMC hIMC, DWORD dwIndex, WCHAR *uniCompStr, INT cchUniCompStr, BYTE *attrib, INT cbAttrib, LONG *cursorCP, LONG *cchAttrib, UINT kbCodePage, BOOL bUnicodeIME, BOOL bUsingAimm ); static HRESULT CheckInsertResultString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter, short *pcch = NULL );
void SetCompositionFont ( CTextMsgFilter &TextMsgFilter, ITextFont *pTextFont ); //@cmember Setup for level 2 and 3 composition and candidate window's font.
void SetCompositionForm ( CTextMsgFilter &TextMsgFilter ); //@cmember Setup for level 2 IME composition window's position.
};
/*
* IME_Lev2 * * @class Level 2 IME support. * */class CIme_Lev2 : public CIme {
//@access Public methods
public: //@cmember Handle level 2 WM_IME_STARTCOMPOSITION
virtual HRESULT StartComposition ( CTextMsgFilter &TextMsgFilter ); //@cmember Handle level 2 WM_IME_COMPOSITION
virtual HRESULT CompositionString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); //@cmember Handle post WM_IME_CHAR to update comp window.
virtual void PostIMEChar( CTextMsgFilter &TextMsgFilter ); //@cmember Handle level 2 WM_IME_NOTIFY
virtual HRESULT IMENotify (const WPARAM wparam, const LPARAM lparam, CTextMsgFilter &TextMsgFilter, BOOL fIgnore );
virtual BOOL IMEMouseOperation ( CTextMsgFilter &TextMsgFilter, UINT msg ) {return FALSE;}
CIme_Lev2( CTextMsgFilter &TextMsgFilter ); virtual ~CIme_Lev2();
ITextFont *_pTextFont; //@cmember base format
};
/*
* IME_PROTECTED * * @class IME_PROTECTED * */class CIme_Protected : public CIme { //@access Public methods
public: //@cmember Handle level 2 WM_IME_STARTCOMPOSITION
virtual HRESULT StartComposition ( CTextMsgFilter &TextMsgFilter ) {_imeLevel = IME_PROTECTED; return S_OK;} //@cmember Handle level 2 WM_IME_COMPOSITION
virtual HRESULT CompositionString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); //@cmember Handle post WM_IME_CHAR to update comp window.
virtual void PostIMEChar( CTextMsgFilter &TextMsgFilter ) {} //@cmember Handle level 2 WM_IME_NOTIFY
virtual HRESULT IMENotify (const WPARAM wparam, const LPARAM lparam, CTextMsgFilter &TextMsgFilter, BOOL fIgnore ) {return S_FALSE;} virtual BOOL IMEMouseOperation ( CTextMsgFilter &TextMsgFilter, UINT msg ) {return FALSE;}
};
/*
* IME_Lev3 * * @class Level 3 IME support. * */class CIme_Lev3 : public CIme_Lev2 { //@access Private data
private:
//@access Protected data
protected: long _ichStart; //@cmember maintain starting ich.
long _cchCompStr; //@cmember maintain composition string's cch.
short _sIMESuportMouse; //@cmember IME mouse support
WPARAM _wParamBefore; //@cmember Previous wParam sent to IME
HWND _hwndIME; //@cmember current IME hWnd
long _crTextColor; //@cmember current font text color
long _crBkColor; //@cmember current font background color
// Helper function
//@cmember get imeshare color for the attribute
COLORREF GetIMEShareColor(CIMEShare *pIMEShare, DWORD dwAttribute, DWORD dwProperty);
//@access Public methods
public: //@cmember Handle level 3 WM_IME_STARTCOMPOSITION
virtual HRESULT StartComposition ( CTextMsgFilter &TextMsgFilter ); //@cmember Handle level 3 WM_IME_COMPOSITION
virtual HRESULT CompositionString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); //@cmember Handle level 3 WM_IME_NOTIFY
virtual HRESULT IMENotify (const WPARAM wparam, const LPARAM lparam, CTextMsgFilter &TextMsgFilter, BOOL fCCompWindow );
void SetCompositionStyle ( CTextMsgFilter &TextMsgFilter, UINT attribute, ITextFont *pTextFont );
CIme_Lev3( CTextMsgFilter &TextMsgFilter ); virtual ~CIme_Lev3() {};
virtual BOOL IMEMouseOperation ( CTextMsgFilter &TextMsgFilter, UINT msg ); virtual BOOL IMESupportMouse ( CTextMsgFilter &TextMsgFilter );
public:
short _fUpdateWindow; //@cmember Update Window after closing CandidateWindow
long GetIMECompositionStart() { return _ichStart; }
long GetIMECompositionLen() { return _cchCompStr; }
};
/*
* Special IME_Lev3 for Korean Hangeul -> Hanja conversion * * @class Hangual IME support. * */class CIme_HangeulToHanja : public CIme_Lev3 { //@access Private data
private:
public: CIme_HangeulToHanja( CTextMsgFilter &TextMsgFilter ); //@cmember Handle Hangeul WM_IME_STARTCOMPOSITION
virtual HRESULT StartComposition ( CTextMsgFilter &TextMsgFilter ); //@cmember Handle Hangeul WM_IME_COMPOSITION
virtual HRESULT CompositionString ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter );
virtual BOOL IMEMouseOperation ( CTextMsgFilter &TextMsgFilter, UINT msg ) {return FALSE;}};
// Glue functions to call the respective methods of an IME object stored in the ed.
HRESULT StartCompositionGlue ( CTextMsgFilter &TextMsgFilter );HRESULT CompositionStringGlue ( const LPARAM lparam, CTextMsgFilter &TextMsgFilter );HRESULT EndCompositionGlue ( CTextMsgFilter &TextMsgFilter, BOOL fForceDelete);void PostIMECharGlue ( CTextMsgFilter &TextMsgFilter );HRESULT IMENotifyGlue ( const WPARAM wparam, const LPARAM lparam, CTextMsgFilter &TextMsgFilter ); // @parm the containing text edit.
HRESULT IMEMouseCheck(CTextMsgFilter &TextMsgFilter, UINT *pmsg, WPARAM *pwparam, LPARAM *plparam, LRESULT *plres);
// IME helper functions.
void IMECompositionFull ( CTextMsgFilter &TextMsgFilter );LRESULT OnGetIMECompositionMode ( CTextMsgFilter &TextMsgFilter ); BOOL IMECheckGetInvertRange(CTextMsgFilter *ed, LONG &, LONG &);void CheckDestroyIME ( CTextMsgFilter &TextMsgFilter );BOOL IMEHangeulToHanja ( CTextMsgFilter &TextMsgFilter );BOOL IMEMessage ( CTextMsgFilter &TextMsgFilter, UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL bPostMessage );HIMC LocalGetImmContext ( CTextMsgFilter &TextMsgFilter );void LocalReleaseImmContext ( CTextMsgFilter &TextMsgFilter, HIMC hIMC );
long IMEShareToTomUL ( UINT ulID );
#endif // define _IME_H
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